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...
SourceScripps Research Institute·JournalProceedings of the National Academy of Sciences·DateJun 2, 2003
Researchers have made a breakthrough in treating liver disease by using bone marrow stem cells from matched donors. The study found that these stem cells can form liver-like cells in damaged livers, producing human albumin and showing promise as a potential treatment for liver disease.
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.
SourceUniversity of Pennsylvania·JournalScience·DateMay 1, 2003
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Researchers have identified a new source of stem cells in human teeth, known as SHED (Stem cells from Human Exfoliated Deciduous Teeth), which can grow rapidly in culture and differentiate into specialized cells. This discovery may lead to breakthroughs in tooth repair, bone regeneration, and neural injury treatment.
SourceNIH/National Institute of Dental and Craniofacial Research·JournalProceedings of the National Academy of Sciences·DateApr 21, 2003
Scientists have discovered that bone marrow-derived stem cells can fuse with liver cells to form healthy, functional cells. This process, called cell fusion, reverses liver damage in mice with a genetic disease, paving the way for potential human treatments.
SourceOregon Health & Science University·JournalNature·DateMar 30, 2003
Researchers at Johns Hopkins Medicine have found a new method for growing human embryonic stem cells using human marrow stromal cells, eliminating the need for mouse cells as feeders. This breakthrough could potentially lead to significant advancements in treating conditions like Parkinson's disease and diabetes.
SourceJohns Hopkins Medicine·JournalStem Cells·DateMar 18, 2003
The National Institute of Arthritis and Musculoskeletal and Skin Diseases has awarded five new grants to researchers studying stem cells and their potential in treating various musculoskeletal diseases. These studies aim to investigate growth factors, muscle regeneration, connective tissue repair, bone disease treatment, and the develo...
SourceNIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases·DateJan 2, 2003
Researchers discovered a novel gene, nucleostemin, crucial for maintaining stem cells' proliferative capacity. Its expression is linked to self-renewal and proliferation in both embryonic and adult stem cells, as well as some human cancer cell lines.
SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateNov 30, 2002
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A study published by University of Pennsylvania School of Medicine reveals the Foxd3 gene plays a vital role in maintaining stem cells' pluripotency. The findings suggest that Foxd3 is essential for embryonic development and has diagnostic significance for human embryonic stem cells.
SourceUniversity of Pennsylvania School of Medicine·JournalGenes & Development·DateOct 14, 2002
Researchers identified 216 'stemness' genes that are active in embryonic, neural, and hematopoietic stem cells. These genes are involved in coping with stress, signaling, and self-renewal, and can aid in developing techniques to induce stem cells to differentiate into specific adult cells.
SourceHoward Hughes Medical Institute·JournalScience·DateSep 12, 2002
Researchers at Princeton University identified a core set of genes responsible for regulating stem cell behavior and unique activities. The study also uncovered over 4,000 genes active in surrounding tissues that influence stem cell behavior.
A Stanford study found that a single adult stem cell could only repopulate blood and immune cells in mice, casting doubt on its ability to form all adult tissues. The research suggests that embryonic stem cells remain the most promising option for tissue formation.
Researchers have discovered stem cells in the adult peripheral nervous system, which can persist into adulthood and give rise to thousands of neurons, glial cells, and smooth muscle cells. This finding has significant implications for understanding the development and repair of the peripheral nervous system.
SourceMichigan Medicine - University of Michigan·JournalNeuron·DateAug 14, 2002
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Adult stem cells have intrinsic properties and respond differently to environmental signals, suggesting a new approach to repairing damaged PNS tissue without transplanting exogenous cells. The study reveals that matching the origin of the stem cell to the specific tissue being repaired is crucial for successful application.
SourceHoward Hughes Medical Institute·JournalNeuron·DateAug 14, 2002
Researchers discovered that degradation of SDF-1 protein is crucial for stem cell mobilization in bone marrow transplants. G-CSF growth factor triggers this process by reducing SDF-1 levels, allowing stem cells to flow into the bloodstream. The findings may lead to improved collection of stem cells for clinical transplantations.
SourceAmerican Committee for the Weizmann Institute of Science·JournalNature Immunology·DateJun 27, 2002
Researchers at the University of Minnesota have found evidence that adult bone marrow-derived cells can differentiate into cells of all three embryonic germ layers, similar to embryonic stem cells. These multipotent adult progenitor cells (MAPCs) show potential for treating genetic and degenerative disorders without tumor formation.
SourceUniversity of Minnesota·JournalNature·DateJun 20, 2002
Scientists have identified a crucial protein called DE-cadherin-mediated cell adhesion, or 'cell glue', which enables stem cells to locate their niche and receive essential instructions for survival. The discovery sheds light on the importance of microenvironment in determining stem cell fate.
SourceStowers Institute for Medical Research·JournalScience·DateJun 6, 2002
Researchers at Rush University Medical Center have identified the signal that instructs stem/progenitor cells to become dopamine neurons, a key step in treating Parkinson's disease. By cloning and transplanting these specific cells, the team hopes to develop new treatments for Parkinson's, Alzheimer's, and other diseases.
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Adult neural stem cells isolated from rats' brains can mature into functioning brain cells, forming normal neuronal structures and connections. The study's findings suggest potential for clinical application in regenerating damaged brain tissue.
SourceHoward Hughes Medical Institute·JournalNature Neuroscience·DateApr 14, 2002
Scientists have successfully implanted cartilage made from stem cells in mice, showing promise for repairing damaged tissues. The study uses fat cells to produce cartilage-like cells that can be used as implants to treat injuries and diseases.
SourceWhitaker Foundation·JournalBiochemical and Biophysical Research Communications·DateApr 11, 2002
Researchers at the University of Minnesota have successfully transplanted stem cells into laboratory animals with stroke, restoring brain function. The study demonstrates that bone marrow-derived stem cells can differentiate into neurons, astrocytes, and oligodendroglia, offering hope for future clinical trials.
SourceUniversity of Minnesota·JournalExperimental Neurology·DateMar 4, 2002
Scientists have successfully genetically altered human blood stem cells to selectively activate genes in developing immune cells, providing a potential breakthrough for gene therapy. The research uses a lentivirus to transfer a fluorescent protein gene into stem cells, which then express the gene only in specific immune cells called an...
SourceJohns Hopkins Medicine·JournalBlood·DateJan 8, 2002
Researchers have successfully converted adult human bone marrow stem cells into functional brain cells in the lab, using a combination of growth factors and nutrients. The breakthrough could potentially lead to new treatments for neurodegenerative diseases like Parkinson's disease.
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A study by Michigan Medicine researchers found that high oxygen levels can be toxic to stem cells, converting muscle cells into fat cells. This discovery has important clinical implications for the treatment of obesity and diabetes, as it may be related to aging and oxidative stress conditions.
SourceMichigan Medicine - University of Michigan·JournalJournal of Cellular Physiology·DateNov 7, 2001
Researchers at UCLA's Jonsson Cancer Center have discovered the PTEN gene's role in regulating brain stem cells, finding that its absence disrupts normal growth and proliferation. The study suggests that PTEN is a critical regulator of brain stem cell behavior, which may contribute to tumor formation.
SourceUniversity of California - Los Angeles·JournalScience·DateNov 5, 2001
A unique gene has been identified as a regulator of stem cell growth, suggesting that embryonic and adult stem cells share key genes and properties. This discovery could lead to the development of new therapies for cancer patients in need of stem cell transplants.
SourceUniversity of South Florida (USF Health)·JournalBlood·DateOct 4, 2001
Researchers at McGill University have isolated novel stem cells from the dermis of adult rodents that can differentiate into various cell types, including neurons and muscle cells. These multipotent stem cells, known as SKPs, hold promise for treating Parkinson's disease and other neural disorders.
SourceMcGill University·JournalNature Cell Biology·DateAug 13, 2001
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The use of embryonic stem cells is a contentious issue, with proponents arguing that they hold promise for medical breakthroughs. However, opponents claim that destroying an embryo is tantamount to infanticide. Scientists generally favor the use of embryonic stem cells due to their versatility.
A team of researchers at The Hospital for Sick Children has discovered two distinct types of stem cells within the blood system, short-term repopulating and long-term repopulating stem cells. These stem cells have different functions and could lead to improved cancer treatment and gene therapy outcomes.
SourceThe Hospital for Sick Children·JournalNature Immunology·DateDec 27, 2000
OHSU researchers successfully used bone marrow stem cells to repair liver damage in mice with genetic disease Tyrosinemia. The study shows that hematopoietic stem cells are required for liver cell regeneration, offering hope for new therapies using stem cells.
SourceOregon Health & Science University·JournalNature Medicine·DateNov 12, 2000
Researchers have identified regulatory cells that govern the behavior of stem cells in Drosophila, revealing a specialized cellular environment known as a niche. The niche environment provides support needed for stem cell self-renewal, and its characteristics may offer insights into human stem cell regulation.
SourceHoward Hughes Medical Institute·JournalScience·DateOct 12, 2000
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A new study reveals that reprogrammed adult neural stem cells can differentiate into various cell types, including heart, liver, muscle, and intestine cells. This breakthrough adds to the growing evidence suggesting that adult stem cells may be more versatile than previously thought.
SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience·DateJun 1, 2000
Researchers at Massachusetts General Hospital have identified a molecular switch, the protein p21, that controls the development and proliferation of hematopoietic stem cells. The discovery may solve a major limitation to using these stem cells in transplants and gene therapies.
SourceMassachusetts General Hospital·JournalScience·DateMar 9, 2000
The AAAS study recommends using federal funding for research on human stem cells, including embryonic stem cells already isolated in laboratories. However, the derivation of human stem cells should not receive federal funding due to public anxiety surrounding its process.
SourceAmerican Association for the Advancement of Science (AAAS)·DateAug 19, 1999
Researchers have developed a new method to identify and isolate stem cells from umbilical cord blood using an enzyme that changes a fluorescent tag. This technique could help investigate fundamental questions about stem cells and potentially improve success rates of stem cell transplants by eliminating unwanted mature blood cells.
SourceDuke University Medical Center·JournalProceedings of the National Academy of Sciences·DateAug 2, 1999
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Researchers at the Weizmann Institute developed a molecule that allows blood stem cells to multiply without differentiation in the test tube, improving bone marrow transplantation and gene therapy research. This breakthrough could enable scientists to insert genes into human stem cells for treating genetic disorders.
SourceAmerican Committee for the Weizmann Institute of Science·JournalBlood·DateJul 28, 1999
Researchers at University of Washington successfully grew large numbers of mouse blood stem cells in lab for up to four months. The discovery may allow better care of cancer patients and create possibilities for genetic cures by enabling the multiplication of blood stem cells outside the body.
SourceUniversity of Washington·JournalProceedings of the National Academy of Sciences·DateJul 5, 1999
Researchers at Osiris Therapeutics confirmed the existence and capability of human adult stem cells to form multiple normal human tissues. These cells can undergo substantial expansion and differentiation into bone, cartilage, or fat, forming healthy connective tissue.
SourceOsiris Therapeutics, Inc.·JournalScience·DateApr 1, 1999
Researchers have found that adult stem cells, previously thought to be permanent, can shed their identities and become blood cells. This discovery raises the possibility of using adult stem cells for therapeutic purposes, such as generating healthy blood cells for patients with blood disorders.
SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience·DateJan 22, 1999
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Researchers at Duke University Medical Center have identified a cell component called the spectrosome that guides reproductive cells to self-renew and mature differentiated cells in fruit flies. The finding may help explain how men continuously produce sperm and why some stem cells lose control, forming cancerous tumors.
SourceDuke University Medical Center·JournalDevelopmental Biology·DateAug 26, 1997