Articles tagged with Embryonic Stem Cells
Biologists at UCSD have found a fundamental mechanism used by embryonic stem cells to assure that genetically damaged stem cells do not divide and pass along the damage. The discovery reveals that p53, a protein known for suppressing tumors, plays a critical role in maintaining genetic stability.
A Mount Sinai School of Medicine study identifies the shared precursor cell, called the hemangioblast, in early mouse embryos. This finding provides strong proof for the existence of a common origin for vascular cells and hematopoietic cells.
Researchers have discovered that neural crest stem cells in human hair follicles can differentiate into various cell types, including neurons and cartilage/bone cells. These findings hold promise for treating conditions such as Parkinson's disease, spinal cord injury, and bone degeneration.
Scientists have successfully cloned primates up to the blastocyst stage, a developmental milestone for embryonic stem cell research and potential treatments for diseases such as diabetes and Parkinson's. The breakthrough could pave the way for deriving human embryonic stem cells from nonhuman primate templates.
A lipid called ceramide helps eliminate potentially harmful cells during brain development, improving the safety and efficacy of stem cell transplants. Researchers found that adding ceramide to embryonic stem cells reduces the risk of teratoma formation, a type of tumor.
Researchers at UCI created oligodendrocyte cells from human embryonic stem cells that can function in a living system, forming myelin patches and restoring sensory and motor function. The study shows great promise for treating spinal cord injuries and diseases.
Researchers identified a link between genetic mutations in the ABCA1 gene and lower HDL cholesterol levels in the general population. Approximately 10% of individuals with low HDL levels carry a mutation or nucleotide modification in one of their ABCA1 genes, suggesting that genetic variation plays a role in regulating HDL levels.
Scientists at Sick Kids Research Institute have identified a new source of stem cells found in adult skin that can transform into neurons, offering hope for treating brain disorders. The discovery was made using mice and has similar findings in human cells.
Researchers have developed blood cells without animal serum, paving the way for potential human applications. The new method uses specific growth factors to guide cell differentiation, avoiding contamination risks associated with animal serum.
Scientists have successfully used stem cells to restore movement in paralyzed rats by transplanting oligodendrocytes, a type of cell that insulates nerve signals. Additionally, researchers have delivered GDNF, a factor aiding neuron survival, to patients with Parkinson's and Huntington's diseases using genetically modified astrocytes.
Researchers have used human spinal cord cells to delay ALS symptoms in rats by 11 days. The study's findings suggest that neuronal stem cells may hold promise for treating conditions caused by separation within the nervous system.
Researchers used embryonic stem cells to rescue congenital heart defects in mice by releasing signals that corrected neighboring heart cells. The study found a critical role of the Id protein and two signaling molecules, IGF-I and WNT5a, in this process.
Researchers created a mouse embryonic stem cell model to study Parkinson's disease, revealing that DJ-1-deficient cells exhibit heightened sensitivity to oxidative stress. The model also linked DJ-1 dysfunction to alpha-synuclein aggregation, a hallmark of Parkinson's neuropathology.
In a preclinical safety study, adipose-derived stem cells demonstrated a statistically significant improvement in left ventricular ejection fraction (LVEF) at six-months post-infarction. The treated group showed improved heart function compared to the control group, as measured by both 2D echocardiography and cineangiography.
Researchers have developed a fruitfly model that can mimic human diabetes, offering new insights into the regulation of blood sugar levels. The study provides potential benefits for pancreatic cell transplantation and may guide the development of stem cells to produce insulin.
Researchers found that embryonic endothelial progenitor cells could reduce infarct size and improve regional myocardial function when delivered regionally, but not systemically. This study uses a large animal model to test the cardioprotective potential of these cells, paving the way for future human trials.
Researchers at Medical College of Georgia have discovered a new category of multi-potent cells called VENT cells, which play a critical role in development and contribute to the formation of various human tissues. The discovery challenges long-held notions about what type of cells form specific types of tissue.
Researchers at Mayo Clinic demonstrate the potential of embryonic stem cells to rebuild damaged heart tissue, improving contractile function and ventricular remodeling. The study found that stem cell-derived cardiomyocytes integrated into infarcted areas without adverse effects.
A novel method developed by UCSD biologists allows for the simultaneous visualization of multiple genes' activity in individual cells, revealing their fate and potential applications in understanding tumor growth and stem cell therapy. This technique enables researchers to quantify gene expression and infer genetic makeup.
Fetal stem cells have shown promise in treating stroke damage, outperforming adult cells and overcoming embryonic cell limitations. Researchers are now exploring the potential of these cells to aid recovery after a stroke.
Researchers successfully coaxed human embryonic stem cells into antigen presenting cells that educate the immune system. These cells can control T cell responses, potentially reducing rejection rates for transplanted tissues.
Researchers at Seoul National University successfully produced genetically identical stem cells through somatic cell nuclear transfer (SCNT). The breakthrough holds promise for treating a large number of currently untreatable conditions, including inherited diseases.
A recent study found that the public's opinions on stem-cell research are heavily influenced by poll questions and messaging, with support for embryonic research being lower than expected. The study suggests that the debate is ongoing, with supporters seeking to capitalize on recent events like Ronald Reagan's death.
Researchers successfully induced neuronal cells from bone marrow stromal cells, offering a potential treatment option for neurological disorders. The findings have significant implications for the development of regenerative medicine techniques.
Researchers developed a new technique to test hundreds of different biomaterials at once, improving the growth and differentiation of human embryonic stem cells. This breakthrough allows for more efficient screening of materials and could lead to breakthroughs in tissue engineering and synthetic skin production.
A team of researchers from the University of Washington has identified a gene, ZFP145, that is linked to sperm-producing stem cells in mammals. The study found that this gene plays a crucial role in the decision-making process of these cells, and its mutation can lead to infertility.
Researchers have made significant breakthroughs in regenerating damaged heart muscle, improving heart function and survival rates with human embryonic stem cells. The study suggests a promising method for treating congestive heart failure, offering hope for millions of patients worldwide.
New studies suggest that embryonic stem cells or mature beta cells are the primary source of new beta cells for diabetes treatment. The findings highlight a significant proliferative capacity of beta cells, offering a potential clinical direction for boosting insulin production in patients with residual beta cells.
Researchers at Stanford Medicine have found that fat-derived cells can effectively heal skull defects in mice, outperforming bone marrow cells. The discovery holds promise for developing new treatments for bone fractures, joint replacements, and other skeletal conditions.
Researchers report first clinical experience of preimplantation HLA matching, demonstrating feasibility for stem cell transplantation in siblings with bone marrow failure. The study involved nine couples with children affected by blood disorders and resulted in five healthy children who were HLA-matched to their affected siblings.
Researchers found that embryonic keratinocytes differentiate into skin cells much sooner than cells after birth. The study suggests a higher commitment to differentiation in embryonic skin cells, which may apply to other epithelial tissues.
Researchers at Northwestern University successfully induced embryonic stem cells to develop into precursor bone marrow and blood cells in genetically mismatched mice. The technique could lead to a renewable alternative to donor bone marrow transplantation, reducing the risk of graft-versus-host disease.
Researchers at the University of Wisconsin-Madison have developed a new storage method that increases stem cell survival rates by over 20 times, allowing for more efficient and reliable research. The technique uses a gel matrix with trehalose to protect cells from freezing and thawing damage.
Researchers found that ES cell lines can restore blood cells, including immune systems, in mice without being rejected. This breakthrough has potential advantages over traditional bone marrow or blood donations, offering a renewable source with low risk of graft-versus-host disease.
The new cell lines, derived from private funds by Harvard University researchers, offer a robust and easy-to-handle alternative to existing human embryonic stem cells. The availability of these cell lines is expected to quicken the pace of discovery in stem cell biology, particularly in research related to type 1 diabetes.
Scientists have discovered a synthetic chemical called cardiogenol that can selectively differentiate embryonic stem cells into beating cardiac muscle cells. This breakthrough could lead to the development of new treatments for heart disease and other degenerative conditions.
Researchers at Scripps Research Institute have identified a compound called cardiogenol C that can selectively differentiate embryonic stem cells into heart muscle cells. This breakthrough could potentially lead to the development of new treatments for repairing damaged heart tissue.
Researchers have developed versatile human embryonic stem cells capable of becoming any cell type, offering potential for transplantation medicine. The cells were created by transferring a somatic cell nucleus into an egg, reprogramming its genes to produce pluripotent stem cells.
A three-year grant supports a study to prevent organ rejection in recipients by developing new white blood cells compatible with donated organs. The average survival rate for grafts is approximately 90% within the first year, but less than 50% after 10 years.
Researchers at Rockefeller University have developed a feeder-free system for maintaining pluripotency in human embryonic stem cells, overcoming the need for mouse feeder cells. The system uses a synthetic compound derived from a marine mollusk to activate the Wnt signaling pathway, keeping stem cells in an active, undifferentiated state.
Scientists at Scripps Research Institute discover a compound, reversine, that can convert muscle cells into precursor cells, which can be converted to other cell types. This breakthrough has the potential to revolutionize stem cell research and make it more practical for medical applications.
A team of scientists has identified a cluster of 88 genes that may act as molecular markers for the developmental potential of different stem cell types and stages. These findings are consistent with previous research on cellular development and plasticity, and shed light on the molecular pathways guiding development.
A University of Wisconsin-Madison team has developed a stem cell model that mimics placenta formation during the earliest stages of human development, offering new insights into pregnancy and fetal health. The research could lead to better understanding of diseases like preeclampsia, which affects millions of women and infants worldwide.
Researchers at Boston Children's Hospital created a continuously growing line of mouse embryonic germ cells, providing an opportunity to study the process in the Petri dish. These cells have implications for understanding parental imprints, cancer research, and reprogramming cells.
Scientists have successfully engineered mouse embryonic stem cells into sperm-like cells using laboratory techniques alone. These precursors were then used to fertilize mouse eggs, resulting in the formation of early-stage embryos. The research has potential applications for treating male infertility and studying cancer.
The panel concludes that researchers should establish a 'bank' with the fewest number of cell lines that reflect the most Americans, prioritizing white Americans but including HLA types common in other ancestral groups. This would enable faster clinical research and ensure fair access to therapies.
Researchers at MIT have developed a new method for creating tissues from human embryonic stem cells by seeding them onto biodegradable polymer scaffolds. The resulting tissues showed characteristics of developing human cartilage, liver, nerves, and blood vessels.
Researchers have isolated stem cells from parthenogenic monkey eggs that can differentiate into various cell types, including neurons and tissues. These findings hold promise for developing an unlimited number of neurons for treating Parkinson's disease.
Researchers control the development of stem cells in the inner ears of embryonic chickens by introducing new genes, leading to the growth of balance-related hairs instead of sound-detecting ones. This breakthrough could potentially improve our understanding of inner ear disorders and lead to therapies for deafness and vertigo.
Researchers uncover unexpected new role for GATA-3 in hair follicle development, shedding light on parallel molecular cues between skin and immune systems. GATA-3-deficient mice exhibit severe structural anomalies in hair development, including bent whiskers and irregular thickenings.
Researchers have developed a mouse embryonic stem cell model that can differentiate into pancreatic precursor cells and islet cells producing four types of hormones. This study could provide valuable insights into normal pancreatic development and potentially lead to better stem cell-based therapies for diabetes.
Researchers at Purdue University have made a significant breakthrough in creating a method to keep embryonic stem cells of zebrafish viable, enabling them to study gene function related to human diseases. This innovation has the potential to reduce time and costs associated with researching gene function, making zebrafish a more attrac...
Researchers have successfully treated rats with spinal cord injuries using embryonic stem cells, which can potentially treat paralysis and degenerative nerve diseases. The treated rats regained ability to walk after nine weeks, with analysis revealing new myelin sheaths and growth factors that stimulated neuron formation.
Researchers have identified a subgroup of cells in amniotic fluid that express the protein Oct-4, a key marker for human pluripotent stem cells. These cells have shown potential to differentiate into nerve cells and could potentially replace embryonic stem cells, reducing the need for human embryos.
The European Society of Human Reproduction and Embryology's new chairman, Professor Arne Sunde, argues against a total ban on embryo-based research. He suggests that alternative stem cell sources, such as those derived from amniotic fluid or adult tissues, may become important for research and treatment in the future.
Scientists have identified a new cell type, VENT cells, that migrate to the developing inner ear and mix with epidermal cells, contributing to the formation of complex tissues. The discovery, made by Dr. Paul Sohal, could explain how single cells give rise to distinct systems.
Researchers have identified small chemical molecules that can direct embryonic stem cells to become neurons, paving the way for potential treatments of neurodegenerative diseases like Parkinson's and Type 1 diabetes. The study provides important insights into the molecular mechanism controlling stem cell fate and may lead to new therap...
Researchers at the University of Pennsylvania have successfully produced mouse eggs from embryonic stem cells outside the body, showcasing their totipotent capabilities. This breakthrough could lead to new methods for producing embryonic stem cells artificially, potentially sidestepping ethical concerns.
Religious leaders and experts discuss the moral standing of human embryos created from mammalian stem cells, citing concerns over personhood and dignity. They argue that traditional views on fertilization and conception are challenged by the possibility of creating life without gametes.
A recent study suggests that primate cloning is difficult to achieve, even for embryonic stem cells. The researcher proposes a ban on reproductive cloning, citing moral and social concerns. This approach may lead to alternative methods for medical research using embryonic stem cells.