Articles tagged with Hematopoietic Stem Cells
A new method identified by Sean J. Morrison and colleagues distinguishes hematopoietic stem cells (HSCs) from other progenitor cells using specific SLAM family receptors. The technique enables the purification of HSCs before transplantation, potentially leading to safer transplants.
Researchers at the University of Florida have successfully generated brain cells in a dish, a breakthrough that could lead to new treatments for neurological disorders. The discovery identifies the true stem cell, which can be used to produce a limitless supply of brain cells to potentially heal damaged brain function.
Researchers have developed a humanized mouse model that can produce functional white blood cells, allowing for studies of immune responses against cancer and infection. The model, called NOD-scid IL2Rãnull, combines characteristics of previous models to enable successful engraftment and development of an intact human immune system.
A study published in Developmental Cell identifies two genes, HES-1 and HLF, that regulate human blood stem cell behavior. These genes enhance cell-cycle progression and inhibit premature cell death in hematopoietic stem cells.
A new study reveals that Mcl-1 protein is essential for the survival of hematopoietic stem cells (HSCs), which can contribute to poor leukemia outcomes. The research suggests that interfering with this protein may improve leukemia treatment options.
Researchers have identified a new source of mesenchymal progenitor cells in the human umbilical cord's Wharton's Jelly, which can be harvested to generate an abundant supply of stem cells. This discovery has the potential to greatly improve bone marrow transplantation success rates, currently ranging from 30-40%. The new stem cell sour...
A new study found that the transcription factor c-Myb regulates hematopoiesis at multiple points, controlling HSC self-renewal and proliferation. This breakthrough has significant implications for developing compounds to regulate stem cell fate decisions, a potential game-changer for stem cell therapy.
Researchers at St. Jude Children's Research Hospital developed a gene vector that allows hematopoietic stem cells to produce fetal hemoglobin, reversing beta-thalassemia in mice. The technique uses a new vector with added regulatory elements to improve the expression of the gamma-globin gene.
Scientists have identified four critical stages in generating B cells from stem cells, involving regulatory proteins and signaling pathways that guide the cell's development. The study paves the way for creating customized immune cells with specific functions.
A new study published in Science suggests that enhancing the homing of hematopoietic stem cells to bone marrow could increase transplant success rates. By inhibiting or deleting CD26, researchers were able to boost short-term homing and long-term engraftment of these precursor blood cells.
Researchers pinpoint identity of early-stage T-cells in blood, providing tools for studying T-cell development and improving understanding of immune system. The discovery sheds light on thymus-imported cell types and may help uncover why certain T cells are difficult to reconstitute after bone marrow transplants.
The UI Hematopoietic Stem Cell Bank provides cord blood stem cells for advancing gene therapy and treating conditions like Parkinson's disease. Nearly 20 mothers have donated their child's umbilical cord blood, supporting scientific and medical advances.
Research suggests that bone-marrow-derived stem cells do not differentiate into new heart muscle cells when injected into damaged hearts. Instead, they mature into traditional blood lineage cells. This challenges the idea of using stem cell therapy to repair damaged hearts and raises questions about alternative approaches.
Researchers successfully transferred and expressed MGMT into relatively few hematopoietic stem cells using a lentivirus vector, enabling gene-corrected cells to repopulate the hematopoietic compartment. This breakthrough has significant implications for human clinical trials of gene therapy in bone marrow transplantation settings.
Two independent studies successfully selected and expanded gene-corrected human stem cells using a novel drug-resistance gene. This breakthrough may be useful in human clinical trials of gene therapy for bone marrow transplantation settings. Additionally, upregulation of Irs2 promotes beta cell growth, survival, and insulin secretion, ...
Researchers at the Stowers Institute have identified a key component of the hematopoietic stem cell niche, which supports their self-renewal and production of blood cells. The study found that interrupting a specific signaling pathway can increase the size of the niche and the number of stem cells produced.
Researchers developed a costimulatory blockade-based protocol to induce peripheral tolerance in stem cell transplantation. This approach combines donor-specific transfusion and anti-CD154 monoclonal antibody administration to achieve functional HSC populations without myeloablation or GVHD induction.
Recent studies highlight the importance of addressing weight concerns without stigmatizing obese patients. The American Thoracic Society Journal reports on innovative approaches to weight loss treatment and sheds light on previously unexplored phenomena such as chimerism in human lung tissue after stem cell transplantation.
Researchers have discovered that hematopoietic stem cells (HSCs) migrate selectively to injured liver tissue through the expression of SDF-1 and CXCR4. This selective homing mechanism may serve as a target for future therapeutic protocols to improve liver regeneration and transplantation outcomes.
Researchers at the University of Wisconsin-Madison have discovered a mechanism that determines early blood cell fate by interacting with two related proteins, GATA-2 and GATA-1. This finding may help hematologists treat patients with severe cancer or blood disorders by expanding HSC numbers.
Researchers have successfully used syngeneic hematopoietic stem cell transplantation to prevent autoimmune diabetes in mice, providing a promising new approach for treating genetic disorders. This breakthrough is made possible by the discovery of natural gene therapy mechanisms that can reverse mutations causing rare inherited diseases...
Researchers successfully integrated genes into hematopoietic stem cells to produce normal red blood cells in mice with beta-thalassemia and sickle cell disease. The technique uses a non-pathogenic AIDS virus gene to ferry DNA into the cells, selectively enriching genetically modified stem cells.
Researchers have purified Wnt protein, a potent trigger of development and cell proliferation, to activate blood-forming stem cells. The discovery offers novel ways to enhance stem cells for cancer patients whose immune systems are compromised by chemotherapy.
Researchers at Stanford Medicine have successfully isolated a key protein that helps maintain the youthful state of hematopoietic stem cells. The discovery, led by Irving Weissman and Roeland Nusse, reveals how this protein, Wnt, triggers stem cell division and expansion.
Research highlights the role of WNK kinases in regulating thiazide-sensitive Na-Cl cotransport, a key mechanism for maintaining electrolyte balance. Additionally, studies investigate the immunomodulatory effects of WNK kinases on pulmonary inflammation and diabetes, shedding light on potential therapeutic targets.
Dr. Rossant and colleagues find that Flk1 and Tal1 proteins steer embryonic cells towards endothelial, hematopoietic, or smooth muscle fates. The study provides further evidence for a common hemangioblast progenitor cell, which can differentiate into the three cell types.
Researchers successfully combined therapeutic cloning, embryonic stem cell differentiation, and gene therapy to treat a genetic immune disorder in mice. The study demonstrates the potential for nuclear transplantation therapy to correct genetic mutations and restore function in human patients.
Research in aplastic anemia reveals crucial insights into immune system dysfunction and potential therapeutic targets. Patients with aplastic anemia display impaired T cell responses, indicating a critical link between immunodeficiency and disease progression.
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.
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.
Researchers from HHMI at Children's Hospital and Harvard Medical School discovered that stem cells can deliver therapeutic genes to diseased organs, potentially remodeling genetically defective tissues. The study suggests that adult stem cells may be manipulated to heal genetic defects in various organs and tissues.
Researchers at Thomas Jefferson University have isolated hematopoietic stem cells using a specific marker, enabling laboratory production of all types of blood cells. This breakthrough has the potential to alleviate blood shortages for transfusions and develop innovative approaches to bone marrow transplants and gene therapy.
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.
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.
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.
Scientists found that adult mouse blood stem cells can survive in the early embryo and produce blood cells with embryonic features, highlighting unexpected plasticity in blood cell programming. The study challenges accepted ideas on blood cell development and opens new avenues for understanding hematopoietic cell transplantations.