Cells from human pluripotent cell human genetic derivation of stem cells from cloned human embryos. Medical search. Frequent questions

A recent study indicates that even adult humans might harbor cells resembling pluripotent embryonic stem cells. (biomedcentral.com)

Four embryonic stem cell lines from human fetal somatic cells were derived from those blastocysts. (wikipedia.org)
In reality, gene somatic cells to a pluripotent cell state by a handful of transcrip- expression is graded, making the potential gene expression tion factors (Takahashi and Yamanaka, 2006). (lu.se)
Derivation of autologous induced pluripotent stem cells (iPSCs) through direct reprogramming of easily accessible somatic cells holds the potential to transform the field of regenerative medicine. (biomedcentral.com)
To circumvent these obstacles, considerable effort has been invested in attempting to derive ESC-like cells by reprogramming somatic cells to an embryonic state. (biomedcentral.com)
Several experimental strategies have been developed to derive iPSCs from differentiated somatic cells (summarized in Figure 1 ). (biomedcentral.com)
Cloning by nuclear transfer using mammalian somatic cells has enormous potential application. (biomedcentral.com)
Embryonic stem (ES) cells are naturally derived from early stage embryos and induced pluripotent stem (iPS) cells are reprogrammed from somatic cells with overexpression of four reprogramming factors, Oct4, Sox2, Klf4 and c-Myc. (biomedcentral.com)
For instance, PSCs with low pluripotency may generate a people of somatic cells that might be polluted with undifferentiated or partially differentiated cells, which present a risk of tumor formation or low effectiveness after transplantation4,5. (tam-receptor.com)
In comparison, mitochondria are huge and many in differentiated somatic cells, which depend even more on oxidative phosphorylation for effective energy creation15. (tam-receptor.com)
As a result, reprogramming somatic cells into iPSCs is normally along with a metabolic change from oxidative phosphorylation to glycolysis, concomitant with Mouse monoclonal to GST adjustments in function and framework of mitochondria16,17. (tam-receptor.com)

Reproductive cloning would involve making an entire cloned human, instead of just specific cells or tissues. (wikipedia.org)
Depending on the source, stem cells can be classified into two broad categories i.e. embryonic stem cells that are derived from embryos and non-embryonic stem cells that are derived from adult and fetal tissues. (benthamscience.com)
Mouse nuclear transfer embryonic stem cells (NT-ESCs) were first established in 2000, and then proved to be able to differentiate either in vivo or in vitro, and give rise to individual tissues through germ line transmission or tetraploid complementation. (benthamscience.com)
Today, we can derive stem cells from a range of adult and newborn tissues: liver cells, kidney cells, brain cells, fat cells, and umbilical cord blood. (eppc.org)
In addition, as the genetic identity of the donor egg from which the ESCs are derived most likely will differ from that of potential recipients, patients who receive ESC-derived cells or tissues may face the same complications that result from organ transplantation (for example, immunorejection, graft-versus-host disease, and need for immunosuppression). (biomedcentral.com)
The institute encompasses 23 research groups that perform fundamental, multidisciplinary research on healthy and diseased cells, tissues and organisms. (maquisadeoccidente.com)
Some of these concerns, such as ensuring the welfare of research animals and obtaining appropriate consent for the use of human tissues, also apply to many other areas of research, but may require special consideration for research with human neural organoids, cell transplants, and chimeras. (nationalacademies.org)
Given the complexity of the human brain and the particularly human nature of many key symptoms of these disorders, especially psychiatric disorders, animal and cell culture models of the types currently used to investigate diseases of other organs and tissues are valuable but inadequate. (nationalacademies.org)
Here, we describe a robust and efficient method that prompts human extended pluripotent stem cells to self-organize into embryo-like structures, termed peri-gastruloids, which encompass both embryonic (epiblast) and extraembryonic (hypoblast) tissues. (bvsalud.org)
This peri-gastruloid platform allows for further exploration beyond gastrulation and may potentially aid in the development of human fetal tissues for use in regenerative medicine. (bvsalud.org)
Stem cell technologies promise to be the next transformative medical technology offering therapies for conditions and diseases that are currently beyond medical science by creating replacement or supplementary tissues for a patient. (schlich.co.uk)
Therapeutic Cloning - Use of a donor cell to create pluripotent stem cells suitable for growing tissues for implantation into the donor or other patient. (schlich.co.uk)
reagents made using a patient's own cells used to regenerate disease or damaged tissues 14,15 , once the stuff of science fiction, may become science fact. (schlich.co.uk)
The progressive generation of chick and mouse axial tissues - the spinal cord, skeleton and musculature of the body - has long been proposed to depend on the activity of multipotent stem cells. (silverchair.com)
Vertebrate embryos display a highly characteristic spatial patterning of tissues, including the arrangement of the neural tube, the somitic mesoderm and the notochord along the rostrocaudal (head-tail) length of the body axis( Fig. 1 ). (silverchair.com)
A few of the cells in the inner cell mass will develop into the foetus, whereas the rest will form the placenta and other supporting tissues needed for foetal development in the uterus. (biomedcentral.com)
Stem cells may be derived from adult tissues but the most potent are extracted from developing human embryos. (edu.au)
However, the mice were grossly normal when dab2 deletion was restricted to the embryo proper and the gene was retained in extraembryonic tissues using Meox2-Cre and Sox2-Cre. (biomedcentral.com)
Micha's interest lies in discovering mechanisms that regulate the formation of the embryonic tissues using iPS cells, in order to create novel models for human disease and drug development with emphasis on neurodegeneration. (universiteitleiden.nl)

Stem cells are not specialized and the process of their specialization is called differentiation. (benthamscience.com)
Derivation and differentiation of haploid human embryonic stem cells. (nature.com)
Stem and progenitor cell populations are often heterogeneous, which may reflect stem cell subsets that express subtly different properties, including different propensities for lineage selection upon differentiation, yet remain able to interconvert. (lu.se)
A key challenge is to understand how state, but must also afford flexibility in cell-fate choice to permit the different cell-fate options confronting stem and progenitor cell-type diversification and differentiation in response to cells are selected and coordinated such that adoption of a given intrinsic cues or extrinsic signals. (lu.se)
Evidence the fate of stem cells has broad ramifications for biomedical suggests that during development or differentiation, cells make science from elucidating the causes of cancer to the use of very precise transitions between apparently stable ``network stem cells in regenerative medicine. (lu.se)
1 Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan. (jci.org)
Ideally, iPSC-based therapies in the future will rely on the isolation of skin fibroblasts or keratinocytes, their reprogramming into iPSCs, and the correction of the genetic defect followed by differentiation into the desired cell type and transplantation. (biomedcentral.com)
In this review, we describe the cardiac differentiation from ES cells, iPS cells, and the current progress of using iPS cell-derived cardiomyocytes for heart disease modeling and for the development of therapeutic strategies. (biomedcentral.com)
Stability of Imprinting and Differentiation Capacity in Naïve Human Cells Induced by Chemical Inhibition of CDK8 and CDK19. (axonmedchem.com)
Accordingly, scientists have developed protocols for the expansion, genetic modification and differentiation of stem cells to NK cells. (molcells.org)
To establish protocols for the safe and efficient differentiation of healthy cells for therapies, we must develop a better understanding of the dynamic continuum of metabolic states that span pluripotency and differentiation, and how to influence them. (conditionmed.org)
The established dogma has however been challenged by recent findings suggesting that multipotent stem cells have a broader differentiation potential than previously thought. (biomedcentral.com)
Dazl can regulate the expression, transport and localization of target mRNAs of proteins which control the differentiation, growth and maturation of germ cells. (ijbs.com)
However, the possible differences in proliferation and differentiation capabilities among independently-derived human embryonic stem cells (hESCs) are not well known because of insufficient characterization. (biomedcentral.com)
and 3) the responses to directed neural differentiation was made between three NIH registered hES cell lines I3 (TE03), I6 (TE06) and BG01V. (biomedcentral.com)
All cell lines differentiated into three embryonic germ lineages in embryoid bodies and into neural cell lineages when cultured in neural differentiation medium. (biomedcentral.com)
Undifferentiated I3 cells grew significantly slower but their differentiation potential was greater than I6 and BG01V. (biomedcentral.com)
Under the same neural differentiation-promoting conditions, the ability of each cell line to differentiate into neural progenitors varied. (biomedcentral.com)
In the present study, a side-by-side comparison of the ability to maintain an undifferentiated state and to self-renew under standard conditions, the ability to spontaneously differentiate into cell types of three germ layers in embryonic bodies, and directed differentiation under neural differentiation-promoting conditions was made between three NIH registered hESC lines I3, I6 and BG01V. (biomedcentral.com)

In 2006, a major breakthrough was reported in Japan by Takahashi and Yamanaka, who described the generation of induced pluripotent stem cells (iPSCs) from mouse fibroblasts via over expression of defined transcription factors [ 2 ]. (biomedcentral.com)
Generation of Induced Pluripotent Stem Cells from Diabetic Foot Ulcer Fibroblasts Using a Nonintegrative Sendai Virus. (hpscreg.eu)

To take human organ generation via BC and transplantation to the next step, we reviewed current emerging organ generation technologies and the associated efficiency of chimera formation in human cells from the standpoint of developmental biology. (frontiersin.org)
Both ES cells and iPS cells are pluripotent stem cells with capabilities of indefinite self-renewal and can be differentiated into almost all cell types of the body, which make them valuable for studying early developmental biology, for modeling and as therapy for human diseases. (biomedcentral.com)

The use of various types of stem cells for research purposes to make disease "models" in the lab for regenerative medicine and for "therapies" to cure sick patients for diseases is constantly in the news. (lifeissues.net)
Stem cells are emerging as an important source of material for diseases in regenerative medicine. (benthamscience.com)
The study of biology of stem cells is the hallmark of the recent emerging field of regenerative medicine and medical biotechnology. (benthamscience.com)
The holy grail of regenerative medicine-whatever one's ethical beliefs about destroying embryos-is to "reprogram" regular cells from one's own body so that individuals can be the source of their own rejection-proof therapies. (eppc.org)
Although this technology holds the potential to revolutionize drug discovery and regenerative medicine, important technical issues associated with the derivation of iPSCs still hinder its clinical translation. (biomedcentral.com)
1 Institute for Stem Cell Research and MRC Centre for Regenerative Medicine,University of Edinburgh, King's Buildings, West Mains Road, Edinburgh EH9 3JQ,UK. (silverchair.com)
The discovery of human pluripotent stem cells (PSCs) at the turn of the century opened the door to a new generation of regenerative medicine research. (molcells.org)
Prof. Dr. Micha Drukker is a professor of Stem Cell Biology, Models and Regenerative medicine at the Division of Drug Discovery & Safety. (universiteitleiden.nl)
Such invasive methods, however, may be inadequate for medical applications in regenerative medicine because of inevitable damage or loss of observed cells. (tam-receptor.com)

many are "totipotent" (as the abject fact of naturally occurring human identical twins makes clear). (lifeissues.net)
Up to the 2-cell embryo, blastomeres remain totipotent (Garner and McLaren, 1974). (conditionmed.org)
A fertilized egg is totipotent, meaning that its potential is total, and as the fertilized egg divides all the cells in the embryo remain totipotent until the fertilized egg has reached the 8/16-cell stage. (biomedcentral.com)
Approximately five days after fertilization the totipotent cells have differentiated and started to form a hollow sphere of cells called a blastocyst. (biomedcentral.com)

The term is generally used to refer to artificial human cloning, which is the reproduction of human cells and tissue. (wikipedia.org)
Induced pluripotent stem cells, another types of pluripotent stem cells derived from any tissue by reprogramming and are the homologous source of stem cells. (benthamscience.com)
XI - embryonic stem cells: embryonic cells that are capable of modifying the cells of any organism tissue. (hinxtongroup.org)
Has informed consent been obtained from the donor of the embryo/tissue from which the pluripotent stem cells have been derived? (hpscreg.eu)
Does consent expressly permit storage of donated embryo/tissue for an unlimited time? (hpscreg.eu)
Does the consent permit uses of donated embryo/tissue or derived cell line intended for clinical treatment or human applications? (hpscreg.eu)
Does consent expressly prevent financial gain from any use of the donated embryo/tissue, including any product made from it? (hpscreg.eu)
Has the donor consented to receive information discovered during use of donated embryo/tissue that has significant health implications for the donor? (hpscreg.eu)
Intravenous infusion of bone marrow-derived mesenchymal stem cells improves tissue perfusion in a rat hindlimb ischemia model. (kyoto-u.ac.jp)
The postcranial axis (i.e. tissue caudal to the head) is then generated over an extended period in a rostral-to-caudal sequence by cells that are derived from the primitive streak and the adjacent epiblast cells, which together eventually form the tail bud. (silverchair.com)
We have previously shown that human kidney tissue can be generated from human pluripotent stem cells. (atlas-d2k.org)
In the long term, human kidney tissue generated in this way may be used for drug screening, tissue regeneration or cell therapy. (atlas-d2k.org)
Ontology changes include new structures, tissue layers and cell types within the LUT, external genitalia and lower reproductive structures. (atlas-d2k.org)
ZO-2 and ZO-3 are ubiquitously expressed within epithelial tight junctions, and unlike ZO-1, which is also expressed at cell junctions of cardiac myocytes, ZO-2 is not expressed in nonepithelial tissue. (thermofisher.com)
International bi-monthly journal of cell signaling, tissue protection, and translational research. (conditionmed.org)
The blastocyst comprises the inner cell mass (ICM), which gives rise to the three primary germ layers and consequently the fetus, and the trophectoderm (TE), which gives rise to the extraembryonic and placental tissue. (conditionmed.org)

Resolution of cell fate decisions revealed by single-cell gene expression analysis from zygote to blastocyst. (nature.com)
In his experiments, Sturtevant determined the relative positions of six genetic factors on a fly's chromosome by creating a process called gene mapping. (asu.edu)
Similarly, GATA-1 has been shown to induce lineage switching expression values even if, for simplicity, we assume only ``on'' of committed cells in hematopoiesis, first in cell lines (Kulessa and ``off'' states for each gene. (lu.se)
On the basis of the unlimited capacity to be propagated in vitro , iPSCs are good targets for genetic manipulation by gene therapy or gene correction by homologous recombination. (biomedcentral.com)
The neomycin-resistant gene driven by the cardiac α-myosin heavy chain promoter was stably transfected into ES cells. (biomedcentral.com)
In this review, we examine the manufacturing and gene engineering of NK cells generated from iPSCs (iPS-NK) for ACT. (molcells.org)
Deletion of DAZ gene is the most common causes of infertility in humans. (ijbs.com)
However, a profound variation in colony morphology, growth rate, BrdU incorporation, and relative abundance of gene expression in undifferentiated and differentiated states of the cell lines was observed. (biomedcentral.com)
A fragment of the Dab2 human cDNA was also isolated based on its frequent loss of expression in ovarian cancer, and was termed DOC-2 (Differentially expressed in ovarian carcinoma gene 2) [ 2 ]. (biomedcentral.com)
Traditionally, selection of live PSCs with high pluripotency utilizes imaging methods that require fluorescent labeling of cells by immunostaining or gene transfection6,7. (tam-receptor.com)

Transplantation of a human induced pluripotent stem cell-derived airway epithelial cell sheet into the middle ear of rats. (kyoto-u.ac.jp)
Ontology changes were based on recently published insights into the cellular and gross anatomy of these structures, and on new analyses of epithelial cell types present in the pelvic urethra and regions of the bladder. (atlas-d2k.org)
In vitro studies indicate that Dab2 establishes epithelial cell polarity and organization by directing endocytic trafficking of membrane glycoproteins. (biomedcentral.com)

To varying degrees, these fates also extend to the Such state stability is required in stem and progenitor cells to immediate progeny of stem cells, known as progenitor or support self-renewal and maintenance of the uncommitted transit-amplifying cells. (lu.se)
Small-molecule inhibitor cocktail promotes the proliferation of pre-existing liver progenitor cells. (kyoto-u.ac.jp)

They called the pluripotent stem cells that they produced induced pluripotent stem cells (iPSCs) because they had induced the adult cells, called differentiated cells, to become pluripotent stem cells through genetic manipulation. (asu.edu)
Here, we summarize current reprogramming methodologies with a focus on the production of transgene-free or genetically unmanipulated iPSCs and highlight important technical details that ultimately may influence the biological properties of pluripotent stem cells. (biomedcentral.com)
Among PSCs, the donors available for induced pluripotent stem cells (iPSCs) are greatest, providing a potentially universal cell source for all types of cell therapies including cancer immunotherapies using natural killer (NK cells). (molcells.org)
Unlike primary NK cells, those prepared from iPSCs can be prepared with a homogeneous quality and are easily modified to exert a desired response to tumor cells. (molcells.org)
There already exist several protocols to genetically modify and differentiate iPSCs into NK cells, and each has its own advantages with regards to immunotherapies. (molcells.org)
In this short review, we detail the benefits of using iPSCs in NK cell immunotherapies and discuss the challenges that must be overcome before this approach becomes mainstream in the clinic. (molcells.org)
Among stem cells, induced pluripotent stem cells (iPSCs) have a number of features that make them ideal as the starting source. (molcells.org)
Micha's lab collaborates closely within the science faculty on stem cell organoid models for drug research, toxicity, replacement of animal models, and with the Leiden University Medical Center (LUMC) on stem cell immunology and manufacturing (GMP) of iPSCs for clinical purposes. (universiteitleiden.nl)
Launch Pluripotent stem cells (PSCs), including embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), possess variations within their capability to differentiate1. (tam-receptor.com)

Two commonly discussed types of human cloning are therapeutic cloning and reproductive cloning. (wikipedia.org)
these are the "holy grail" that would be useful for therapeutic or reproductive cloning. (wikipedia.org)
But what is not getting such wide reporting is the use of pluripotent stem cells (as well as many other types of cells and genetic engineering techniques) for reproductive purposes . (lifeissues.net)
3. National regulations of governance of human cloning and embryo research in general adopted so far confirm the convergence of views of the refusal to adopt legislation or guidelines permitting reproductive cloning , while they still show variations on the legitimacy of human cloning carried out as part of research agendas. (lifeissues.net)
But we can only wonder about the ethical propriety of producing the first human child with this technique, knowing that the hoped-for newborn would be a reproductive experiment, one that may end initially in numerous fetal failures. (eppc.org)
… "human clone" means an embryo that, as a result of the manipulation of human reproductive material or an in vitro embryo, contains a diploid set of chromosomes obtained from a single - living or deceased - human being, fetus, or embryo. (hinxtongroup.org)
Reproductive Cloning - Use of a donor cell to create a new human genetically identical to the donor. (schlich.co.uk)
Assisted reproductive technology (ART) and embryo research have posed many challenges to the different timeframes of science, ethics and law. (edu.au)
and the general public debate about reproductive cloning. (edu.au)
Assisted reproductive techniques for canines: preservation of genetic material in domestic dogs [3] "Assisted reproductive techniques (ARTs), such as artificial insemination, in vitro fertilization, and cryopreservation of gametes/zygotes, have been developed to improve breeding and reproduction of livestock and for the treatment of human infertility. (edu.au)

In the present study, we tested TALEN and double-nicking CRISPR/Cas9 on GS cells, targeting Rosa26 and Stra8 loci as representative genes dispensable and indispensable in spermatogenesis, respectively. (cyberleninka.org)
Harvested GS cell colonies showed a high targeting efficiency with both TALEN and CRISPR/Cas9. (cyberleninka.org)
TALEN and CRISPR/Cas9, when applied in GS cells, will be valuable tools in the study of spermatogenesis and for revealing the genetic mechanism of spermatogenic failure. (cyberleninka.org)
The lab focuses on multifaceted regulation by transcription and epigenetic factors, lncRNAs, membraneless organelles, mechanisms of self-renewal, and extensively uses organoid technology, single cell RNA sequencing, flow cytometry, and CRISPR-Cas9 genetic engineering approaches. (universiteitleiden.nl)

Therapeutic cloning would involve cloning cells from a human for use in medicine and transplants. (wikipedia.org)
Two common methods of therapeutic cloning that are being researched are somatic-cell nuclear transfer and (more recently) pluripotent stem cell induction. (wikipedia.org)
In particular, scientific developments in areas such as iPS cells open new possibilities of research and, at mid term, of therapeutic applications, but they also bring new ethical challenges and problems requiring further reflection and debate. (lifeissues.net)
Kuldip S. Sidhu , " Frontiers in Pluripotent Stem Cells Research and Therapeutic Potentials Bench-to-Bedside ", Bentham Science Publishers (2012). (benthamscience.com)
Embryonic stem cells (ESCs) can grow infinitely and give rise to all types of cells in human body, thus of tremendous therapeutic potentials for a variety of diseases, such as Parkinson's disease, spinal cord injury, and diabetes. (benthamscience.com)
Under such circumstances, the idea of "therapeutic cloning" was proposed, indicating the generation of ESCs from SCNT embryos for therapeutic purpose. (benthamscience.com)
But adult stem cells also raise some interesting ethical dilemmas alongside their great therapeutic promise. (eppc.org)
As explained in Chapter 2 , human neural organoids, transplants, and chimeras provide new models for such conditions and may lead to new knowledge about brain development and function, the discovery of disease mechanisms, new therapeutic targets, and better screening of potential new treatments. (nationalacademies.org)
The comparison of the unique properties and behavior of each individually derived cell line is critical in identifying the safe and efficacious lines for research and therapeutic use [ 3 , 13 ]. (biomedcentral.com)

What is more, by deriving NT-ESCs from patient cells, the problem of immune rejection may be avoided. (benthamscience.com)
However, the derivation of human NT-ESCs goes with the destruction of clone embryos, leading to fierce ethical disputes. (benthamscience.com)
The potential use of embryonic stem cells (ESCs) for cell replacement therapies is limited by ethical concerns and the technical hurdles associated with their isolation from human embryos. (biomedcentral.com)

Generation of genetically modified mice by oocyte injection of androgenetic haploid embryonic stem cells. (nature.com)
Somatic cell cloning (cloning or nuclear transfer) is a technique in which the nucleus (DNA) of a somatic cell is transferred into an enucleated metaphase-II oocyte for the generation of a new individual, genetically identical to the somatic cell donor (Figure 1 ). (biomedcentral.com)
A matured oocyte (c) is then enucleated (d) and a donor cell is transferred into the enucleated oocyte (e). (biomedcentral.com)
The somatic cell and the oocyte is then fused (f) and the embryos is allowed to develop to a blastocyst in vitro (g). (biomedcentral.com)

In 2004 and 2005, Hwang Woo-suk, a professor at Seoul National University, published two separate articles in the journal Science claiming to have successfully harvested pluripotent, embryonic stem cells from a cloned human blastocyst using SCNT techniques. (wikipedia.org)
The embryos were developed only to the blastocyst stage, at which point they were studied in processes that destroyed them. (wikipedia.org)
Fleming, T. P. A quantitative analysis of cell allocation to trophectoderm and inner cell mass in the mouse blastocyst. (nature.com)
Nor do only the cells of the inner cell mass of the blastocyst become the later adult and none of the cells from the inner cell mass become part of the placenta, umbilical cord, etc. (lifeissues.net)
In this regard, emerging technologies of chimeric human organ production via blastocyst complementation (BC) holds great promise. (frontiersin.org)
The blastocyst can then be transferred to a recipient (h) and cloned animals are born after completion of gestation (i). (biomedcentral.com)
We discuss what is known about the distinct metabolic states captured in vitro by the 2-cell-like, naïve, blastocyst-like, formative, and primed states of pluripotency. (conditionmed.org)
In the mouse, a transporting epithelium is established around the 8-16-cell stage through a process known as compaction where cell definition is lost and the outer cells of the embryo form tight junctions, giving rise to the blastocyst. (conditionmed.org)
Compared to vehicle controls, 2i conditions increased the abundance of cumulus cells in bovine IVF cultures, which compromised blastocyst formation. (bioone.org)
Following cumulus removal, 2i accelerated blastocyst development and increased inner cell mass (ICM) and trophoblast cell numbers by 30% and 27%, respectively. (bioone.org)

ES cells were aggregated into three-dimensional structures, termed embryoid bodies (EBs), and suspended in media containing fetal calf serum. (biomedcentral.com)
The study of the new dab2 mutant allele in embryos and embryoid bodies confirms a role for Dab2 in extraembryonic endoderm development and epithelial organization. (biomedcentral.com)

The mechanisms underlying the appearance of asymmetry between cells in the early embryo and consequently the specification of distinct cell lineages during mammalian development remain elusive. (nature.com)
Here, we consider the metabolism of the early embryo through development, and look at the nutrient milieu within the developing stem cell niche. (conditionmed.org)

However, though BC is emerging as a potential organ transplant option, challenges regarding organ size scalability, immune system incompatibilities, long-term maintenance, potential evolutionary distance, or unveiled mechanisms between donor and host cells remain. (frontiersin.org)
Has the donor been informed that their donated biosample or derived cells may be tested for the presence of microbiological agents / pathogens? (hpscreg.eu)
Does the consent anticipate that the donor will be notified of results or outcomes of any research involving the donated samples or derived cells? (hpscreg.eu)
Cells are collected from donor (a) and cultured in vitro (b). (biomedcentral.com)
Various strategies have been employed to modify donor cells and the nuclear transfer procedure in attempts to improve the efficiency of nuclear transfer. (biomedcentral.com)
Most of these efforts are focused on donor cells. (biomedcentral.com)

In 2011, scientists at the New York Stem Cell Foundation announced that they had succeeded in generating embryonic stem cell lines, but their process involved leaving the oocyte's nucleus in place, resulting in triploid cells, which would not be useful for cloning. (wikipedia.org)

It is quite possible that the advances in human biology in the remainder of the twentieth century will be remembered as the most significant scientific achievement of the animal species known as Homo sapiens . (lifeissues.net)
The real experts to ask about the accurate scientific facts of human embryology are the scientific experts in human embryology who are academically credentialed Ph.D. human embryologists - not the "experts" in cell biology, genetics, doctors, nurses, theologians, lawyers or politicians, secretaries, news journalists, etc. (lifeissues.net)
Understanding cell-fate decisions in stem cell populations is a major goal of modern biology. (lu.se)

We now see a patent landscape where stem cell technologies and related therapies can, with very few exceptions, be protected via patents, provided the appropriate form of claim wording is used. (schlich.co.uk)
It is only through understanding embryonic metabolism and development that we can derive and maintain different in vitro stem cell states for disease modeling and therapies. (conditionmed.org)
These unique capabilities make hESCs a renewable source of a wide range of cell types for potential use in research and cell-based drug screening and therapies for many diseases. (biomedcentral.com)

Since 1995, Congress has annually reauthorized a law-called the "Dickey Amendment"-prohibiting federal funding for research "in which" embryos are destroyed while leaving embryo destruction in the private sector entirely unregulated. (eppc.org)
1995) and subsequently in primary cells (Heyworth et al. (lu.se)

The non-embryonic stem cells like adult stem cells are in clinical use for many years and embryonic stem cells are now emerging as an alternative source for the same purpose with huge potentials in drug discovery and toxicological studies. (benthamscience.com)
And recent experimental trials, while still very preliminary, suggest that adult stem cells may one day help us treat a host of terrible pathologies. (eppc.org)
Yet for now, the utility of adult stem cells also remains limited. (eppc.org)
Adult stem cells are easier to control than embryonic stem cells and thus less likely to form tumors. (eppc.org)
In addition, the possibility of reprogramming adult stem cells back to a "pluripotent" (or embryonic-like) state raises the biological prospect of going back too far. (eppc.org)

Stem cells and organoids Hans Clevers became famous with his stem-cell research into healthy and sick intestines. (maquisadeoccidente.com)
Research involving human neural organoids, transplants, and chimeras has an ultimate goal of preventing and treating the great suffering caused by serious neurological and psychiatric conditions for which no effective treatment is available. (nationalacademies.org)
Chapter 2 presents the science behind these models and describes the challenges of measuring and monitoring such characteristics and capacities in human neural organoids, transplants, and chimeras. (nationalacademies.org)
neural organoids, transplants, and chimeras, and then at issues specific to human neural transplants and chimeras or to neural organoids. (nationalacademies.org)
Ethical issues common to human neural organoids, transplants, and chimeras include (1) the ethical value of relieving human suffering and disease, (2) concerns about encroachment on divine roles, and (3) ethical issues related to human donors of biological materials. (nationalacademies.org)
A main justification for carrying out research, both basic and translational, with human neural organoids, transplants, and chimeras is that it will help in the discovery of new ways to understand and treat neurological and psychiatric disorders, which, as discussed previously, cause immense suffering and for which treatments are ineffective or lacking. (nationalacademies.org)

Possible role of intravenous administration of mesenchymal stem cells to alleviate interstitial cystitis/bladder pain syndrome in a Toll-like receptor-7 agonist-induced experimental animal model in rat. (kyoto-u.ac.jp)

The pluripotent stem cells differentiate further into cells commonly called multipotent stem cells. (biomedcentral.com)
Examples of multipotent stem cells are those producing blood, nerve and muscle cells. (biomedcentral.com)
Multipotent stem cells are present in the adult individual as well as the fetus and umbilical cord. (biomedcentral.com)
Although several reports indicate an ability of multipotent stem cells to produce cells even outside their normal limits, most of these findings remain highly controversial. (biomedcentral.com)

In 2006, Kazutoshi Takahashi and Shinya Yamanaka reprogrammed mice fibroblast cells, which can produce only other fibroblast cells, to become pluripotent stem cells, which have the capacity to produce many different types of cells. (asu.edu)
In addition, we summarize the recent direct reprogramming of cardiomyocytes from fibroblast cells, which provides another method for potential heart disease therapy. (biomedcentral.com)

Additionally, we uncovered endometrial stromal effects in promoting trophoblast cell survival, proliferation, and syncytialization during co-culture with blastoids and blastocysts. (bvsalud.org)
Side-by-side single-cell RNA sequencing revealed similarities and differences in transcriptome profiles between pre-implantation blastoids and blastocysts, as well as post-implantation cultures, and uncovered a population resembling early migratory trophoblasts during co-culture with endometrial stromal cells. (bvsalud.org)
Our optimized protocol will facilitate broader use of human blastoids as an accessible, perturbable, scalable, and tractable model for human blastocysts. (bvsalud.org)

Efficient generation of embryonic stem cells from single blastomeres of cryopreserved mouse embryos in the presence of signalling modulators. (axonmedchem.com)

Mouse SSCs can be maintained under culture conditions, continuing to proliferate for up to 2 years without losing their spermatogenic ability as well as maintaining genetic, epigenetic, and karyotypic stability. (cyberleninka.org)
This variability is certainly caused by hereditary and TGX-221 inhibition epigenetic distinctions that occur during derivation, induction, and following maintenance of PSCs2,3. (tam-receptor.com)

increased public sensitivity and awareness together with the development of national regulations of governance of human cloning and embryo research in general. (lifeissues.net)
Graham, C. F. & Lehtonen, E. Formation and consequences of cell patterns in preimplantation mouse development. (nature.com)
… "embryo" means a human organism during the first 56 days of its development following fertilization or creation, excluding any time during which its development has been suspended, and includes any cell derived from such an organism that is used for the purpose of creating a human being. (hinxtongroup.org)
Recording and contextualizing the science of embryos, development, and reproduction. (asu.edu)
Recent advances in human blastoids have opened new avenues for modeling early human development and implantation. (bvsalud.org)
In vitro stem cell models that replicate human gastrulation have been generated, but they lack the essential extraembryonic cells needed for embryonic development, morphogenesis, and patterning. (bvsalud.org)
Although peri-gastruloids are not viable due to the exclusion of trophoblasts, they recapitulate critical stages of human peri-gastrulation development, such as forming amniotic and yolk sac cavities, developing bilaminar and trilaminar embryonic discs, specifying primordial germ cells, initiating gastrulation, and undergoing early neurulation and organogenesis. (bvsalud.org)
Revealing cell populations catching the early stages of the human embryo development in naïve pluripotent stem cells. (axonmedchem.com)
BACKGROUND: During normal human kidney development, nephrogenesis (the formation of nephrons) is complete by term birth, with the majority of nephrons formed late in gestation. (atlas-d2k.org)
The revised ontology will be an important tool for researchers studying urogenital development/malformation in mouse models and will improve our capacity to appropriately interpret these with respect to the human situation. (atlas-d2k.org)
2020). This places metabolism at the forefront of development and cell state decisions. (conditionmed.org)
The developing embryo, from which pluripotent stem cells originate, undergoes a series of dynamic metabolic transitions synchronized to its molecular development. (conditionmed.org)
There are different types of stem cells that best can be described in the context of normal human development [ 23 ]. (biomedcentral.com)
The pace of scientific development has been directly promoted by substantial increases in OECD (Organisation for Economic Cooperation and Development) government funding for genetic and biotechnological research. (edu.au)
Stem cell technology is the latest development in this controversial branch of science. (edu.au)
The ethical and legal controversies that were aroused in the ART debates during the 1980s have been re-ignited with the development of stem cell technology. (edu.au)
Conditional deletion indicates that Dab2 is dispensable for organ development, when the vast majority of the embryonic cells are dab2 null. (biomedcentral.com)
Many of these developmental abnormalities are common to human development. (edu.au)
Dynamics of male canine germ cell development [6] "Primordial germ cells (PGCs) are precursors of gametes that can generate new individuals throughout life in both males and females. (edu.au)

Using our recently established haploid human pluripotent stem cells (hPSCs), we generated a genome-wide loss-of-function library targeting 18,166 protein-coding genes to define the essential genes in hPSCs. (nature.com)
explosion further, consider that a fictitious small genome with 2002) More recently and more dramatically, the potential for 260 genes would host the same number of combinations as cell state conversions is exemplified by the reprogramming of the number of atoms in the visible universe! (lu.se)
Although the cultured SSCs, named germline stem (GS) cells, are targets of genome modification, this process remains technically difficult. (cyberleninka.org)
2004). In order to make GS cells more widely applicable for the study of spermatogenesis at the genetic and molecular levels, it is desirable to be able to modify their genome without disturbing their spermato-genic ability. (cyberleninka.org)

An in-depth analysis aiming at re-defining this terminology according to the new developments in human embryo research would be highly beneficial . (lifeissues.net)
Research advocates attack President Bush for "banning stem cell research," while pro-life advocates lament a Republican administration and Congress that have banned nothing-not embryo destruction, not human cloning, not fetal farming, not genetic engineering. (eppc.org)
But they are also less equipped to produce every cell type of the body and less able to reproduce themselves indefinitely, which makes them less appealing to scientists interested in basic research. (eppc.org)
These moral perils are surely not a reason to oppose adult stem cell research, which deserves vigorous and expanded public support. (eppc.org)
Before leaving office, President Clinton sought to get around the existing law without actually changing it, by funding research on embryonic stem cells so long as the actual embryo destruction was paid for with private dollars. (eppc.org)
Hamer's research suggested a possible genetic cause of homosexuality. (asu.edu)
In Enhancing Evolution, leading bioethicist John Harris dismantles objections to genetic engineering, stem-cell research, designer babies, and cloning and makes an ethical case for biotechnology that is both forthright and rigorous. (philpapers.org)
Developmental defects, including abnormalities in cloned fetuses and placentas, in addition to high rates of pregnancy loss and neonatal death have been encountered by every research team studying somatic cloning. (biomedcentral.com)
One such concern is the possibility of altering the capacities or consciousness of a research animal in ways that may blur the lines between human beings and nonhuman animals. (nationalacademies.org)
Specifically, human iPS cells could be utilized to generate patient-specific lineages for a variety of translational research. (biomedcentral.com)
These cells have been in high demand for use in basic and applied biomedical research. (biomedcentral.com)
Embryonic stem cell technology is still at a preliminary research stage and announcements about its potential may be premature. (edu.au)
Experts from around the world are assessing the difficult issue of the extent to which embryonic stem cell research should be allowed to proceed, and to date there is little international consensus on this matter. (edu.au)
How, then, should embryonic stem cell research be regulated in Australia? (edu.au)
This issue was considered by the House of Representatives Standing Committee on Legal and Constitutional Affairs in its report entitled Human Cloning: Scientific, Ethical and Regulatory Aspects of Human Cloning and Stem Cell Research (hereafter the Andrews Report , after the Chair of the Committee, Mr Kevin Andrews, MP) released in September 2001. (edu.au)
In this article we examine embryonic stem cell research and explore the current regulatory framework associated with this research in Australia, with particular reference to the Andrews Report . (edu.au)
The cultured SSCs, named germline stem (GS) cells, are now useful in research on various aspects of spermatogenesis. (cyberleninka.org)

These ethical concerns have prompted several nations to pass laws regarding human cloning. (wikipedia.org)
The report arose out of a recommendation for the Committee to review the report of the Australian Health Ethics Committee (AHEC) of the NHMRC entitled Scientific, Ethical and Regulatory Considerations Relevant to Cloning of Human Beings (hereafter the AHEC Report ). (edu.au)

The first hybrid human clone was created in November 1998, by Advanced Cell Technology. (wikipedia.org)

hPSC-enriched essential genes mainly encode transcription factors and proteins related to cell-cycle and DNA-repair, revealing that a quarter of the nuclear factors are essential for normal growth. (nature.com)
Overall, we have constructed an atlas of essential and growth-restricting genes in hPSCs, revealing key aspects of cellular essentiality and providing a reference for future studies on human pluripotency. (nature.com)
Fig. 2: Analysis of cell-essential genes. (nature.com)
Positional cloning of rat mutant genes reveals new functions of these genes. (kyoto-u.ac.jp)
We perform a single-cell CRISPRi screen to assess the endogenous roles of 25 enhancers and putative cardiac target genes implicated in genetic studies of congenital heart defects (CHDs). (bvsalud.org)
DAZ (Deleted in Azoospermia) family genes are important fertility factors in many animals including humans. (ijbs.com)
In human, an array of four DAZ genes ( DAZ 1-4) is located in two clusters on the Y chromosome and mutations of these genes cause severe oligospermia or azospermia [ 1 ]. (ijbs.com)
In fact, this was shown to be possible by the transfection of genes into GS cells (Kanatsu-Shinohara et al. (cyberleninka.org)

These findings can be integrated in a new unified framework that regards the early mammalian embryo as a self-organizing system. (nature.com)
Spermatogonial stem cells (SSCs) are pivotal for maintaining the lifelong sperm production of mammalian males. (cyberleninka.org)

Consequently, selection of PSCs with high pluripotency is essential to ensure the security and effectiveness of PSC-derived cells. (tam-receptor.com)

With the cloning of a sheep known as Dolly in 1996 by somatic cell nuclear transfer (SCNT), the idea of human cloning became a hot debate topic. (wikipedia.org)
In January 2008, Dr. Andrew French and Samuel Wood of the biotechnology company Stemagen announced that they successfully created the first five mature human embryos using SCNT. (wikipedia.org)
In 2013, a group of scientists led by Shoukhrat Mitalipov published the first report of embryonic stem cells created using SCNT. (wikipedia.org)
In this experiment, the researchers developed a protocol for using SCNT in human cells, which differs slightly from the one used in other organisms. (wikipedia.org)

These developmental defects have been attributed to incomplete reprogramming of the somatic nuclei by the cloning process. (biomedcentral.com)

In his speech on "Biological Possibilities for the Human Species of the Next Ten Thousand Years" at the Ciba Foundation Symposium on Man and his Future in 1963, he said: It is extremely hopeful that some human cell lines can be grown on a medium of precisely known chemical composition. (wikipedia.org)
The biological properties and clinical potential of stem cells elicit that are generated must not be unduly sensitive to small fluctu- continued scientific, commercial, and public interest. (lu.se)

Johnson, M. H. & Ziomek, C. A. The foundation of two distinct cell lineages within the mouse morula. (nature.com)
These stem cells are considered committed to certain cell lineages. (biomedcentral.com)
A unique and essential property of embryonic stem cells is the ability to self-renew and differentiate into multiple cell lineages. (biomedcentral.com)

We discuss these properties with examples both from the hematopoietic and embryonic stem cell (ESC) systems. (lu.se)
Hematopoietic (blood forming) stem cells have been investigated for several decades and is currently by far the best characterized stem cell system. (biomedcentral.com)
Until recently it was considered a fact that, for example, hematopoietic stem cells did not have the potential to differentiate into cells of other types than the cells constituting the blood system. (biomedcentral.com)

All specialized cells originate from stem cells. (benthamscience.com)

Mouse ES cells have been widely utilized as an in vitro model to study cardiogenesis, as cardiomyocytes were found to spontaneously differentiate from ES cells after withdrawal of LIF (leukemia inhibitory factor), which functions to maintain the pluripotency of undifferentiated mouse ES cells [ 2 - 4 ]. (biomedcentral.com)

A comparative study of mesenchymal stem cell transplantation and NTG-101 molecular therapy to treat degenerative disc disease. (kyoto-u.ac.jp)
The differentiated ES cell cultures are heterogeneous and contain undifferentiated ES cells, which could result in teratoma formation after transplantation into the host. (biomedcentral.com)
in 1956 and Till and McCulloch in 1961, demonstrating that lethally irradiated mice could be rescued with cells from freshly isolated bone marrow [ 10 ] and that BM cells formed spleen clonies (CFU-S) following transplantation to irradiated recipients [ 30 ], respectively. (biomedcentral.com)
The Rosa26-targeted GS cells differentiated into fertility-competent sperm following transplantation. (cyberleninka.org)
On the other hand, Stra8-targeted GS cells showed defective spermatogenesis following transplantation, confirming its prime role in the initiation of meiosis. (cyberleninka.org)

However, somatic cloning has been inefficient in all species in which live clones have been produced. (biomedcentral.com)
Because cattle are a species widely used for nuclear transfer studies, and more laboratories have succeeded in cloning cattle than any other specie, this review will be focused on somatic cell cloning of cattle. (biomedcentral.com)
DAZ family proteins are found almost exclusively in germ cells in distant animal species. (ijbs.com)
Depending on the species, DAZL is expressed in primordial germ cells (PGCs) and/or pre-meiotic and meiotic germ cells of both sexes. (ijbs.com)
Moreover, the lab is banking stem cells from exotic and endangered species of animals for evo-devo projects and de-extinction purposes. (universiteitleiden.nl)

Our project focuses on characterizing and optimizing this approach to improve tubular maturation and cellular function and generating reporter lines for the isolation of specific cell types. (atlas-d2k.org)

We explore the recently described metabolic surge event that occurs as pluripotency is lost and stem cells commit to differentiate. (conditionmed.org)
Human embryonic stem cells (hESCs) possess the ability to self-renew in an undifferentiated state in culture while retaining the ability to differentiate into all of the cell types in the human body. (biomedcentral.com)
It is also essential to understand how the inherited variation in the sex, stage, quality and genetic background of embryos, as well as environmental influences such as derivation methods and passage procedures can affect the ability of hES cell lines to self-renew and differentiate. (biomedcentral.com)

In terminally differentiated cell fate is coupled to appropriate regulation of the alternative cells, transcriptional networks must be stable and irreversible, pathways. (lu.se)

These cells are commonly termed embryonic germ (EG) cells because they are derived from primordial germ cells found at the genital ridges in developing fetuses. (biomedcentral.com)

In mouse, only epiblast cells can be directly converted into cultured pluripotent embryonic stem cells, capable of forming all adult cell types. (bioone.org)

The possibilities of human cloning have raised controversies. (wikipedia.org)

Molecular and Regenerative Characterization of Repair and Non-repair Schwann Cells. (kyoto-u.ac.jp)
Despite ground-breaking genetic studies that have identified thousands of risk variants for developmental diseases, how these variants lead to molecular and cellular phenotypes remains a gap in knowledge. (bvsalud.org)
In the coming decade, we anticipate systematic enhancer perturbation studies to link non-coding variants to molecular mechanisms, changes in cell state, and disease phenotypes. (bvsalud.org)
Molecular Cell , 82 (1), 190-208. (axonmedchem.com)
Molecular cell, 82(1), 106-122. (axonmedchem.com)
We also review the location and molecular characteristics of these putative stem cells, along with their evolutionary conservation in vertebrates and the signalling mechanisms that regulate and arrest axis extension. (silverchair.com)

Already, non-embryonic stem cells are being used to treat a variety of diseases-most notably certain cancers of the blood. (eppc.org)
For example, mouse models of age-related neurodegenerative diseases fail to capture key features because the diseases typically strike humans in their 60s and 70s, whereas mice live for only 2 or 3 years. (nationalacademies.org)
Thus, genetic variants at enhancers are thought to contribute to developmental diseases by altering cell fate commitment. (bvsalud.org)
Stem cells offer the prospect of treatments for diseases and injuries that are currently beyond medical science. (schlich.co.uk)
Stem cells may underpin the next generation of pharmaceuticals, with even greater promise for successful treatment of diseases that are intractable or scarcely treatable now. (schlich.co.uk)

The related coactivator complexes SAGA and ATAC control embryonic stem cell self-renewal through acetyltransferase-independent mechanisms. (axonmedchem.com)

Human cloning is the creation of a genetically identical copy of a human. (wikipedia.org)

Figure 1: Classic models for lineage segregation in the early mouse embryo. (nature.com)
Louvet-Vallee, S., Vinot, S. & Maro, B. Mitotic spindles and cleavage planes are oriented randomly in the two-cell mouse embryo. (nature.com)
Rossant, J. & Lis, W. T. Potential of isolated mouse inner cell masses to form trophectoderm derivatives in vivo . (nature.com)
Rossant, J. & Vijh, K. M. Ability of outside cells from preimplantation mouse embryos to form inner cell mass derivatives. (nature.com)
Piotrowska, K. & Zernicka-Goetz, M. Role for sperm in spatial patterning of the early mouse embryo. (nature.com)
In July 2005, for example, scientists announced that they had engineered adult mouse stem cells into usable mouse eggs, a technique that might one day allow for the creation of human eggs from ordinary human cells. (eppc.org)
Wutz, A. Haploid mouse embryonic stem cells: rapid genetic screening and germline transmission. (nature.com)
Leeb, M. & Wutz, A. Derivation of haploid embryonic stem cells from mouse embryos. (nature.com)
Forward and reverse genetics through derivation of haploid mouse embryonic stem cells. (nature.com)
In order, therefore, to obtain a purified cardiomyocyte population from mouse ES cells, several approaches have been developed. (biomedcentral.com)
Mouse ES cell-derived EBs were dissociated using collagenase, followed with a modified procedure by Isenberg and Klockner in 1982 to prepare the calcium-tolerant ventricular myocytes [ 18 ]. (biomedcentral.com)
Much of the early patterning of the embryo is orchestrated during gastrulation by signals from a midline structure, known as the primitive streak in chick and mouse embryos. (silverchair.com)
However, human anatomical terms do not always superimpose on the mouse, and the lack of accurate and standardised nomenclature is hampering the utility of such animal models. (atlas-d2k.org)
Summary Mouse spermatogonial stem cells (SSCs) can be cultured for multiplication and maintained for long periods while preserving their spermatogenic ability. (cyberleninka.org)

But in order to become a part of medical history, parahuman reproduction and human genetic engineering must circumvent the recalcitrance of an antiquated culture. (lifeissues.net)

Anatomy48

Organisms7

Diseases6

Chemicals and Drugs47

Analytical, Diagnostic and Therapeutic Techniques and Equipment56

Psychiatry and Psychology2

Phenomena and Processes55

Disciplines and Occupations7

Technology, Industry, Agriculture1

Humanities8

Information Science4

Health Care1

Resembling pluripotent embryonic stem1

Somatic cells10

Tissues19

Differentiation19

Generation of induced pluri2

Developmental biology2

Regenerative medicine9

Totipotent4

Tissue16

Gene10

Epithelial cell3

Progenitor cells2

IPSCs9

Reproductive10

CRISPR-Cas94

Therapeutic9

ESCs3

Oocyte4

Blastocyst10

Embryoid bodies2

Early embryo2

Donor6

Succeeded in generatin1

Biology3

Therapies3

19952

Adult stem5

Organoids6

Mesenchymal stem1

Multipotent stem4

Fibroblast cells2

Blastocysts3

Blastomeres1

Epigenetic2

Development19

Genome4

Research17

Ethical2

19981

Genes8

Mammalian2

PSCs1

SCNT4

Defects1

Biological2

Lineages3

Hematopoietic3

Originate1

Spontaneously1

Transplantation5

Species5

Isolation1

Differentiate3

Regulation1

Primordial germ1

Epiblast cells1

Controversies1

Molecular6

Diseases5

Self-renewal1

Genetically1

Mouse14

Reproduction1