Stem cell differentiation in vitro cell living human derivation of stem cells from cloned human embryos. Medical search. Frequent questions

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)
Embryo-like models with spatially organized morphogenesis and structure of all defining embryonic and extra-embryonic tissues of the post-implantation human conceptus (that is, the embryonic disc, the bilaminar disc, the yolk sac, the chorionic sac and the surrounding trophoblast layer) remain lacking 1 , 2 . (nature.com)
Much of this process relies on the morphogenesis of the extra-embryonic tissues and the effect this has on the organization of embryonic cells. (nature.com)
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)
In mammals, physiological Wnt signaling is intimately involved with the biology of adult stem cells and self-renewing tissues (18,19). (hubrecht.eu)
These epithelial organoid cultures are genetically and phenotypically extremely stable, allowing transplantation of the cultured offspring of a single stem cell, as well as disease modeling by growing organoids directly from diseased patient tissues (32, 47, 53). (hubrecht.eu)
Mechanochemical Principles of Spatial and Temporal Patterns in Cells and Tissues. (mpi-cbg.de)
Patterns are ubiquitous in living systems and underlie the dynamic organization of cells, tissues, and embryos. (mpi-cbg.de)
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)
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)
The institute encompasses 23 research groups that perform fundamental, multidisciplinary research on healthy and diseased cells, tissues and organisms. (maquisadeoccidente.com)
The stem cells suits human needs, does not cause harm and can be obtained from both adult and fetal does not conflict with religious beliefs, it has tissues, umbilical cord and early embryos. (who.int)
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 may be derived from adult tissues but the most potent are extracted from developing human embryos. (edu.au)
This mode of cell death serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. (lookformedical.com)

Embryonic stem cells of the inner cell mass are pluripotent, meaning they are able to differentiate to generate primitive ectoderm, which ultimately differentiates during gastrulation into all derivatives of the three primary germ layers: ectoderm, endoderm, and mesoderm. (wikipedia.org)
These germ layers generate each of the more than 220 cell types in the adult human body. (wikipedia.org)
These include embryonic disc and bilaminar disc formation, epiblast lumenogenesis, polarized amniogenesis, anterior-posterior symmetry breaking, primordial germ-cell specification, polarized yolk sac with visceral and parietal endoderm formation, extra-embryonic mesoderm expansion that defines a chorionic cavity and a connecting stalk, and a trophoblast-surrounding compartment demonstrating syncytium and lacunae formation. (nature.com)
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)
However, robust and large-scale genome-wide reprogramming of DNA methylome occurs during two critical developmental processes: (1) development of primordial germ cells and (2) pre-implantation embryogenesis. (nature.com)
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)
This paper outlines the debates prompted through a reproduction mechanism involv- by progress in cloning research, with special ing male and female germ cells. (who.int)
Reproductive cloning versus germ cell (egg, ovum). (who.int)

Due to their plasticity and potentially unlimited capacity for self-renewal, embryonic stem cell therapies have been proposed for regenerative medicine and tissue replacement after injury or disease. (wikipedia.org)
In addition to their potential in regenerative medicine, embryonic stem cells provide a possible alternative source of tissue/organs which serves as a possible solution to the donor shortage dilemma. (wikipedia.org)
According to a 2002 article in PNAS, "Human embryonic stem cells have the potential to differentiate into various cell types, and, thus, may be useful as a source of cells for transplantation or tissue engineering. (wikipedia.org)
In tissue engineering, the use of stem cells are known to be of importance. (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)
Drawing upon a history of using tissue interactions to understand differentiation, Kollar and Baird designed their experiments to understand how differentiated structures become specified. (asu.edu)
The Organoid group, previously Clevers group, studies the molecular mechanisms of tissue development and cancer of various organs using organoids made from adult Lgr5 stem cells. (hubrecht.eu)
These cells represent the epithelial stem cells of the small intestine and colon (23), the hair follicle (24), the stomach (28) and many other tissue stem cell types. (hubrecht.eu)
Has informed consent been obtained from the donor of the embryo/tissue from which the pluripotent stem cells have been derived? (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)
Does consent expressly permit storage of donated embryo/tissue for an unlimited time? (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)
It demonstrated that genes inactivated during tissue differentiation can be completely re-activated by a process called nuclear reprogramming: the reversion of a differentiated nucleus back to a totipotent status. (biomedcentral.com)
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)
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)
Bone growth plate abnormalities and skull shape defects are seen in hypophosphatasia, a heritable disorder in humans that occurs due to the deficiency of tissue nonspecific alkaline phosphatase (TNAP, Alpl) enzyme activity. (bvsalud.org)
International bi-monthly journal of cell signaling, tissue protection, and translational research. (conditionmed.org)
One of the greatest controversies triggered tissue, a stem cell encoding for heart tissue by the rapid pace of evolution in biology, will eventually develop into heart tissue particularly in genomics and biotechnology, and so on. (who.int)
Intravenous infusion of bone marrow-derived mesenchymal stem cells improves tissue perfusion in a rat hindlimb ischemia model. (kyoto-u.ac.jp)
Cells grown in vitro from neoplastic tissue. (lookformedical.com)
Any of a group of malignant tumors of lymphoid tissue that differ from HODGKIN DISEASE, being more heterogeneous with respect to malignant cell lineage, clinical course, prognosis, and therapy. (lookformedical.com)

The 29-member Independent Citizens Oversight Committee (ICOC), governing board of the California Institute for Regenerative Medicine (CIRM), today approved 29 Comprehensive Research Grants for approximately $74.6 million over four years, to accomplished stem cell investigators at academic and non-profit research centers throughout the state. (ca.gov)
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)
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)
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)
In conclusion, our study showed that the epithelium of OM contains NCSCs that can be isolated and expanded with clinical-grade reagents to supply the demand for multipotent cells required for clinical applications in regenerative medicine. (bvsalud.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)

Although it is possible to culture structures derived from human blastocysts ex vivo, these cultures do not recapitulate the events and structural organization of the in vivo embryos 6 ( Supplementary Information ). (nature.com)
Lgr5 resides in Wnt receptor complexes and mediates signaling of the Wnt-agonistic R-spondins (31), explaining the unique dependence of Lgr5 stem cells on secreted R-spondins in vivo and in vitro. (hubrecht.eu)

Researchers are currently focusing heavily on the therapeutic potential of embryonic stem cells, with clinical use being the goal for many laboratories. (wikipedia.org)
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)
Therapeutic cloning possesses enormous potential for revolutionizing medical and thera- peutic techniques. (who.int)
This is therapeutic cloning. (who.int)
This cell then has therapeutic cloning: the global the capacity to divide and grow into an exact replica of the original from whom the debate somatic cell was taken. (who.int)

Embryonic stem cells (ESCs) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. (wikipedia.org)
Human embryos reach the blastocyst stage 4-5 days post fertilization, at which time they consist of 50-150 cells. (wikipedia.org)
Isolating the inner cell mass (embryoblast) using immunosurgery results in destruction of the blastocyst, a process which raises ethical issues, including whether or not embryos at the pre-implantation stage have the same moral considerations as embryos in the post-implantation stage of development. (wikipedia.org)
Embryonic stem cells (ESCs), derived from the blastocyst stage of early mammalian embryos, are distinguished by their ability to differentiate into any embryonic cell type and by their ability to self-renew. (wikipedia.org)
In this regard, emerging technologies of chimeric human organ production via blastocyst complementation (BC) holds great promise. (frontiersin.org)
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)
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)
Approximately five days after fertilization the totipotent cells have differentiated and started to form a hollow sphere of cells called a blastocyst. (biomedcentral.com)

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)

Retinoblastoma proteins that inhibit the transcription factor E2F until the cell is ready to enter S phase are hyperphosphorylated and inactivated in ESCs, leading to continual expression of proliferation genes. (wikipedia.org)
Amongst the intestinal Wnt target genes (13), we found the Gpr49/Lgr5 gene to be unique in that it marks small cycling cells at crypt bottoms. (hubrecht.eu)
Two other Wnt target genes, RNF43 and ZNRF3, encode stem cell-specific E3 ligases that downregulate Wnt receptors in a negative feedback loop (35). (hubrecht.eu)
Here, we identify 2232 genome-wide putative SEs in mouse cranial neural crest cells (CNCCs), 147 of which target genes establishing CNCC positional identity during face formation. (bvsalud.org)
Promoters of genes associated with oxidative phosphorylation are preferentially remethylated at the 8-cell stage, suggesting that this mode of energy metabolism may not be favored. (nature.com)
This mechanism also applies to hematopoietic cells transformed by other HOX genes, including CDX2, which is highly expressed in a majority of acute myeloid leukemias, thus providing a molecular approach based on GSK-3 inhibitory strategies to target HOX-associated transcription in a broad spectrum of leukemias. (stanford.edu)
Positional cloning of rat mutant genes reveals new functions of these genes. (kyoto-u.ac.jp)
The majority of mantle-cell lymphomas are associated with a t(11;14) translocation resulting in overexpression of the CYCLIN D1 gene (GENES, BCL-1). (lookformedical.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)

Small-molecule inhibitor cocktail promotes the proliferation of pre-existing liver progenitor cells. (kyoto-u.ac.jp)

When provided with the appropriate signals, ESCs initially form precursor cells that in subsequently differentiate into the desired cell types. (wikipedia.org)
ESCs divide very frequently due to a shortened G1 phase in their cell cycle. (wikipedia.org)
Despite this difference in the cell cycle when compared to ESCs grown in media containing serum these cells have similar pluripotent characteristics. (wikipedia.org)
Aside from these uses, ESCs can also be used for research on early human development, certain genetic disease, and in vitro toxicology testing. (wikipedia.org)
Moreover, the combination of gene modification and directed differentiation of ESCs provides perfect tool for disease modelling and drug discovery. (benthamscience.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)
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)

Pluripotency distinguishes embryonic stem cells from adult stem cells, which are multipotent and can only produce a limited number of cell types. (wikipedia.org)
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)

Rapid cell division allows the cells to quickly grow in number, but not size, which is important for early embryo development. (wikipedia.org)
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)

The cells are being studied to be used as clinical therapies, models of genetic disorders, and cellular/DNA repair. (wikipedia.org)
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)
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)
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 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)
Human enhancement, Harris argues, is a good thing--good morally, good for individuals, good as social policy, and good for a genetic heritage that needs serious improvement. (philpapers.org)
How may genetic information associated with the cell line be accessed? (hpscreg.eu)
In addition to these basic issues concerning leukemia pathogenesis, we are devising new diagnostic procedures for detecting and monitoring leukemia patients based on molecular genetic abnormalities in the malignant cells. (stanford.edu)
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)

… "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)
Cloning technology, however, is perceived as having the potential for reproductive cloning, which raises serious ethical and moral concerns. (who.int)
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)

We explore the recently described metabolic surge event that occurs as pluripotency is lost and stem cells commit to differentiate. (conditionmed.org)
The pluripotent stem cells differentiate further into cells commonly called multipotent stem cells. (biomedcentral.com)
The have been applied to both the plant and ani- stem cells possess pluripotential charac- mal kingdoms without even stirring a ripple teristics, and can differentiate into various of concern in international conscience [ 2 ]. (who.int)

Multipotent stem cells are present in the adult individual as well as the fetus and umbilical cord. (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)

With these new grants, California is continuing on the path of turning the hope and promise of stem cell research into the reality of therapies and cures for millions of Californians and people across the globe. (ca.gov)
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)
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)
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)

Here we report genome-wide composition, patterning, and stage-specific dynamics of DNA methylation in pre-implantation rhesus monkey embryos as well as male and female gametes studied using an optimized tagmentation-based whole-genome bisulfite sequencing method. (nature.com)
Although the genome-wide DNA demethylation is believed to be a hallmark of mammalian embryogenesis, previous study also indicated that the somatic form of dnmt1 ( dnmt1s ) is actually expressed at each stage of pre-implantation embryos and plays a role in the maintenance of DNA imprinting 8 . (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)
In 1-cell and 2-cell embryos Dnmt1s is derived from the oocyte, whereas from the 2-cell stage onward the embryo starts to synthesize its own Dnmt1s 8 . (nature.com)

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

The ability to study human post-implantation development remains limited owing to ethical and technical challenges associated with intrauterine development after implantation 1 . (nature.com)
Furthermore, due to ethical and legal concerns, very limited techniques can be applied to human embryos to validate some of significant conclusions drawn from descriptive studies regarding human embryonic development. (nature.com)
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)
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)
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)

Such human fully integrated and complete SEMs recapitulate the organization of nearly all known lineages and compartments of post-implantation human embryos, including the epiblast, the hypoblast, the extra-embryonic mesoderm and the trophoblast layer surrounding the latter compartments. (nature.com)
These human complete SEMs demonstrated developmental growth dynamics that resemble key hallmarks of post-implantation stage embryogenesis up to 13-14 days after fertilization (Carnegie stage 6a). (nature.com)
This SEM platform will probably enable the experimental investigation of previously inaccessible windows of human early post implantation up to peri-gastrulation development. (nature.com)
and (3) evidence of developmental dynamism relating to ability to progress, in a structurally organized manner, through morphologically characterized developmental milestones of the early post-implantation human embryo following initial aggregate formation 3 . (nature.com)

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)
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)
Transplantation of a human induced pluripotent stem cell-derived airway epithelial cell sheet into the middle ear of rats. (kyoto-u.ac.jp)
A comparative study of mesenchymal stem cell transplantation and NTG-101 molecular therapy to treat degenerative disc disease. (kyoto-u.ac.jp)

Monkeys have served as one of the most valuable models for understanding DNA methylation dynamics during early embryogenesis in human due to their similarities in genetics and early embryonic development 17 , 18 . (nature.com)

Cloning by nuclear transfer using mammalian somatic cells has enormous potential application. (biomedcentral.com)

The Wnt target gene encoding the transcription factor Achaete scute-like 2 controls intestinal stem cell state (26). (hubrecht.eu)
Growing self-organizing mini-guts from a single intestinal stem cell: mechanism and applications. (maquisadeoccidente.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)
Although exciting results have been achieved by means of somatic cell nuclear transfer, cell fusion, and culture-induced reprogramming [ 1 ], these procedures are technically demanding and inefficient and therefore unlikely to become a common approach for producing patient-specific pluripotent cells. (biomedcentral.com)
Several experimental strategies have been developed to derive iPSCs from differentiated somatic cells (summarized in Figure 1 ). (biomedcentral.com)
However, somatic cloning has been inefficient in all species in which live clones have been produced. (biomedcentral.com)
These developmental defects have been attributed to incomplete reprogramming of the somatic nuclei by the cloning process. (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)
Schematic diagram of the somatic cloning process. (biomedcentral.com)
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)
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)

Wnt signaling intimately interacts with the BMP and Notch cascades to drive proliferation and inhibit differentiation in intestinal crypts and adenomas (17, 20). (hubrecht.eu)
Maintaining the thyroid gland in mutant thyroglobulin-induced hypothyroidism requires thyroid cell proliferation that must continue in adulthood. (kyoto-u.ac.jp)

Pluripotency factors Oct4 and Nanog play a role in transcriptionally regulating the embryonic stem cell cycle. (wikipedia.org)
Hence, the PD imaging program may be used for testing of live PSCs with possibly high pluripotency ahead of more strenuous quality control procedures. (tam-receptor.com)
Consequently, selection of PSCs with high pluripotency is essential to ensure the security and effectiveness of PSC-derived cells. (tam-receptor.com)
Such demanding methods for quality control are expensive and time-consuming, necessitating development of fast and inexpensive screening of live PSCs with high pluripotency prior to the demanding quality control methods. (tam-receptor.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)

2023) Living in the Plastic Age . (fraunhofer.de)

Stability of Imprinting and Differentiation Capacity in Naïve Human Cells Induced by Chemical Inhibition of CDK8 and CDK19. (axonmedchem.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)
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)

The proportions of podocytes, endothelial and non-epithelial cells within mature glomeruli were stable throughout gestation. (atlas-d2k.org)
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)
Characterization analysis showed that the levels of keratins K2, K6C, K4, K13, K31, and K15-specific to OM epithelial cells-were significantly lower in the experimental NCSCs. (bvsalud.org)

Long-term clonal culturing of organoids from Lgr5 stem cells. (hubrecht.eu)
Based on these combined insights, we have established Lgr5/R-spondin-based culture systems that allow the outgrowth of single mouse or human Lgr5 stem cells into ever-expanding organoids. (hubrecht.eu)
Stem cells and organoids Hans Clevers became famous with his stem-cell research into healthy and sick intestines. (maquisadeoccidente.com)

Development of new ways of deriving hESCs and investigating the special capabilities of newly-derived human cell lines. (ca.gov)
Revealing cell populations catching the early stages of the human embryo development in naïve pluripotent stem cells. (axonmedchem.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)
Implantation of the human embryo leads to a number of changes in organization that are essential for gastrulation and future development 1 . (nature.com)
Recording and contextualizing the science of embryos, development, and reproduction. (asu.edu)
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)
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)
We therefore decided to investigate comprehensively the global and high-resolution DNA methylation dynamics during early development of a non-human primate (rhesus monkey, Macaca mulatta ). (nature.com)
We are studying the role that normal chromatin structure plays in gene regulation in hematopoietic cells and how its disruption leads to altered development and cancer. (stanford.edu)
There are different types of stem cells that best can be described in the context of normal human development [ 23 ]. (biomedcentral.com)
Stem cell technology is the latest development in this controversial branch of science. (edu.au)

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)
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)

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)

Our research focuses on developmental pathways that regulate hematopoietic cell growth and differentiation and are disrupted in the course of neoplastic transformation, particularly in leukemias and lymphomas. (stanford.edu)

We report in this study on the isolation and expansion of neural crest stem cells (NCSCs) from the epithelium of oral mucosa (OM) using reagents that are GMP-certified and FDA-approved for clinical use. (bvsalud.org)

LOS ANGELES, March 16, 2007 - Just a month after approving nearly $45 million for embryonic stem cell research, California's stem cell agency authorized another $75.7 million in additional funds for established scientists at 12 non-profit and academic institutions. (ca.gov)
The California spirit - the perseverance, creativity and resourcefulness that has made us a leader on everything from gold mining in the 19th Century to fighting global warming in this one - is fully present in our stem cell research teams. (ca.gov)
As of today, California is the largest and most stable source of funding for human embryonic stem cell research in the world," Klein said. (ca.gov)
These grants provide substantial support to a pool of very distinguished researchers in human embryonic stem cell research," declared Zach W. Hall, Ph.D., CIRM's President and Chief Scientific Officer. (ca.gov)
The ICOC has approved a very well-balanced portfolio of research proposals, including those aimed at understanding stem cell differentiation and identifying new ways of obtaining hESCs, and many that target specific diseases," Hall said. (ca.gov)
Combined with our training and SEED grants, the CIRM is now funding embryonic stem cell research in more than 100 California laboratories. (ca.gov)
We focused our initial grants on human embryonic stem cells specifically," Klein said, "because human embryonic stem cell research receives minimal funding from the federal government, and even those funds are restricted to lines of questionable value. (ca.gov)
Going forward, we will support a diverse range of stem cell research projects. (ca.gov)
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)
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)
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)

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 are studying the effects and consequences of protein fusion on the transcriptional and transforming activities of these proteins using in vitro and animal models. (stanford.edu)
i) Precipitated proteins in A10 cell lysates with m7GTP\agarose beads were identified by Western blot analysis. (informationalwebs.com)
ii) A10 cell lysates were incubated with GTP\agarose beads, and none of the proteins tested were precipitated with the beads. (informationalwebs.com)
Moreover, in HEK 293T cells, forced expression of Flag\FMRP results in an increased association of endogenous \catenin with the eIF4E pre\initiation complex without affecting \catenin expression, while again, no proteins interacted with the GTP\agarose control beads (Fig?4D\i and ii, respectively). (informationalwebs.com)

Drukker M.E. (18 November 2022), Cell pharmacy (Inaugural address. (universiteitleiden.nl)
Matheus F., Raveh T., Oro A.E., Wernig M. & Drukker M.E. (2022), Is hypoimmunogenic stem cell therapy safe in times of pandemics? (universiteitleiden.nl)

Here we extend those findings to humans using only genetically unmodified human naive embryonic stem cells (cultured in human enhanced naive stem cell medium conditions) 4 . (nature.com)

The aim of this study was to morphologically examine nephrogenesis in fetal human kidneys from 20 to 41weeks of gestation. (atlas-d2k.org)

Moreover, the lab is banking stem cells from exotic and endangered species of animals for evo-devo projects and de-extinction purposes. (universiteitleiden.nl)

These stem cells are considered committed to certain cell lineages. (biomedcentral.com)

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

Malignant lymphoma composed of large B lymphoid cells whose nuclear size can exceed normal macrophage nuclei, or more than twice the size of a normal lymphocyte. (lookformedical.com)

We were the first to link Wnt signaling with adult stem cell biology, when we showed that TCF4 gene disruption leads to the abolition of crypts of the small intestine (8), and that TCF1 gene knockout severely disables the stem cell compartment of the thymus (2). (hubrecht.eu)

Currently, the efficiency for nuclear transfer is between 0-10%, i.e., 0-10 live births after transfer of 100 cloned embryos. (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)
Although the efficiency of nuclear transfer has been dramatically improved from the initial success rate of one live clone born from 277 embryo transfers [ 1 ], none of the aforementioned efforts abolished the common problems associated with nuclear transfer. (biomedcentral.com)

A group of lymphomas exhibiting clonal expansion of malignant T-lymphocytes arrested at varying stages of differentiation as well as malignant infiltration of the skin. (lookformedical.com)

In his experiments, Bridges studied Drosophila, the common fruit fly, and by doing so showed that a process called nondisjunction caused chromosomes, under some circumstances, to fail to separate when forming sperm and egg cells. (asu.edu)
Nondisjunction, as described by Bridges, caused sperm or egg cells to contain abnormal amounts of chromosomes. (asu.edu)

Apoptosis is the mechanism responsible for the physiological deletion of cells and appears to be intrinsically programmed. (lookformedical.com)

On the other hand, a chimera is defined as an organism in which cells from two or more different organisms have contributed. (frontiersin.org)
Unicellular for those cells that are derived from human organisms are primed to replicate (clone) pre-embryos, which seem to have a high themselves by nature. (who.int)

Self-renewal conditions must prevent the cells from clumping and maintain an environment that supports an unspecialized state. (wikipedia.org)
The related coactivator complexes SAGA and ATAC control embryonic stem cell self-renewal through acetyltransferase-independent mechanisms. (axonmedchem.com)

Anatomy60

Organisms13

Diseases4

Chemicals and Drugs54

Analytical, Diagnostic and Therapeutic Techniques and Equipment55

Phenomena and Processes62

Disciplines and Occupations7

Technology, Industry, Agriculture3

Humanities6

Information Science4

Named Groups1

Health Care1

Tissues18

Germ8

Tissue25

Regenerative medicine8

Vivo2

Therapeutic7

Blastocyst10

Remain totipotent2

Genes8

Hematopoietic stem1

Progenitor cells1

ESCs9

Adult stem2

Early embryo2

Genetic9

Reproductive5

Differentiate3

Umbilical cord1

Generation of induced pluri2

Therapies4

Genome-wide2

Oocyte3

Blastomeres1

Ethical5

Post-implantation4

Transplantation4

Embryonic development1

Mammalian1

Intestinal stem cell2

Somatic11

Proliferation2

Pluripotency5

20231

Capacity3

Epithelial3

Organoids3

Development12

IPSCs2

Epigenetic1

Neoplastic1

Clinical1

Research13

Isolation1

Proteins4

20222

Genetically1

Fetal1

Species1

Lineages1

Originate1

Nuclei1

Biology1

Nuclear3

Stages1

Chromosomes2

Mechanism1

Organisms2

Self-renewal2