Researchers have discovered a new mechanism by which adult stem/progenitor cells enhance tissue repair in damaged organs. These cells not only differentiate into replacement cells but also stimulate the proliferation of existing stem cells and transfer mitochondrial DNA to dysfunctional cells.
Recent studies have found that PTEN and HER2 genes regulate self-renewal and invasion of human mammary stem cells, making them potential targets for breast cancer treatment. Additionally, radiation therapy may contribute to leukemia risk by recruiting hematopoietic stem cells into the irradiated bone marrow.
A study by Pittsburgh scientists found that female stem cells have a greater ability to regenerate skeletal muscle tissue than male cells. The researchers isolated female and male muscle-derived stem cells and tested their regenerative capabilities in dystrophic mice. Female stem cells were more efficient at regenerating skeletal muscl...
Scientists have discovered a new type of cell that plays a role in cancer development, which can either remain benign or become malignant depending on environmental cues. The finding may help define the role of cancer stem cells in tumor growth and recurrence.
Researchers challenge the cancer stem cell hypothesis, suggesting that tumors arise from normal cells and genetic variation rather than a single abnormal stem cell. The study identifies two distinct populations of cancer cells that can be targeted with experimental drugs.
Researchers used human embryonic stem cells to treat a degenerative disease in mice, demonstrating the first successful use of hESCs in a diseased brain. The treatment not only replaced damaged nerve cells but also boosted the brain's supply of an enzyme and reduced inflammation.
The study identifies centrosome asymmetry as a key regulator of asymmetric stem cell division, ensuring the correct differential identity of resulting cells. This complex behavior is precisely regulated, coinciding with the orientation in which the stem cell must divide to guarantee asymmetry.
Researchers transplanted bone marrow stem cells into testes of infertile mice, showing potential for treating male infertility. The stem cells differentiated into germ cells and supporting cells, suggesting a new approach to replacing nonfunctioning cells involved in sperm production.
Researchers at UT-Houston's Brown Foundation Institute of Molecular Medicine have developed a new procedure to differentiate human embryonic stem cells into alveolar epithelial type II cells, also known as the 'stem cells of the lungs'. These cells can potentially be used to treat pulmonary genetic diseases and lung trauma.
Mayo Clinic researchers successfully transplanted cardiac preprogrammed embryonic stem cells into diseased hearts, regenerating infarcted heart muscle without tumor formation. The study establishes a tumor-resistant approach to growing new heart tissue from an embryonic stem cell source.
Researchers have developed a technique to encourage survival and growth of adult stem cells, found in many tissues, which hold great promise for treating injuries and some diseases. The study's findings suggest that by manipulating the environment surrounding the cells, certain growth factors can protect them from pro-death signals.
Researchers at the University of Pennsylvania have successfully used uniparental embryonic stem cells to repopulate a damaged organ with healthy cells in adult mice. This breakthrough could provide a less controversial alternative to traditional embryonic stem cell therapy, and may offer therapeutic benefits for both males and females.
The Xie Lab has demonstrated that the microRNA pathway is essential for controlling self-renewal of germline and somatic stem cells in Drosophila ovaries. Understanding this mechanism could lead to developing new methods for expanding stem cell populations for tissue repair.
Stem cells in fruit fly gut use Notch signaling to replenish specific cell types, with Delta protein controlling cell fate and division. This finding transforms basic understanding of stem cells and could prove valuable in cancer research.
Researchers at Rockefeller University have cloned healthy mice from adult stem cells, a breakthrough that could lead to new therapies and treatments. The successful cloning rate was 1.6% when using female skin stem cells, but higher when using male stem cells, opening up potential for future human applications.
Researchers at Rockefeller University have successfully cloned mice from adult skin stem cells using nuclear transfer, with a success rate of 19 out of 100 attempts. This breakthrough could lead to the creation of personalized embryonic stem cell lines for disease research and treatment.
Researchers identified human pancreatic cancer stem cells, which can produce tumors in half of mice tested. These stem cells are highly tumorigenic and resistant to traditional therapy, making them a promising target for new treatments.
Researchers at Cedars-Sinai Medical Center successfully cultured stem cells from human bone marrow that can differentiate into neurons and other central nervous system cells. These cells exhibit behaviors similar to those derived from brain tissue, suggesting a promising approach for treating brain disorders and tumors.
The study reveals that PTEN-deficient intestinal stem cells can lead to changes increasing the number of stem cells and altering their position, resulting in crypt fission and budding. This process can initiate intestinal polyposis and uncontrolled tumor growth.
A new study has identified a gene that regulates adult stem cell growth, which could lead to increased doses of chemotherapy and faster recovery times for cancer patients. The discovery also opens up possibilities for treating other diseases such as liver disease and diabetes.
Researchers have isolated broad potential stem cells from amniotic fluid, which can give rise to various specialized cell types. These cells, named amniotic fluid-derived stem (AFS) cells, may represent an intermediate stage between embryonic and adult stem cells.
Researchers at Cedars-Sinai Medical Center identified genes that make brain cancer-causing stem cells resistant to chemotherapy and other treatments. The study found that these cells can regenerate and become even more aggressive after treatment, highlighting a potential target for new therapies.
Researchers have created mouse embryonic stem cells that can be transplanted without rejection due to genetic matching with the recipient's immune system. The cells were generated from unfertilized eggs through a series of chemical treatments and identified using genetic typing.
Researchers at St. Jude Children's Research Hospital found that harvesting aggressive stem cells from donated bone marrow can reduce the time it takes for a child's immune system to rebuild after a bone marrow transplant. This could lead to lower risk of fatal virus infections and improved long-term outcomes.
Researchers discovered that stem cells communicate with niche cells through the Notch pathway, leading to increased niche cell production and larger stem cell populations. This two-way dialogue enables stem cells to maintain an active niche, which is essential for their self-renewal and differentiation into specialized cells.
Researchers at Scripps Research Institute have discovered a synthetic compound called pluripotin that maintains the youthfulness of stem cells without the need for feeder cells. This breakthrough accelerates stem cell research and holds promise for developing new therapies for diseases like cancer and Parkinson's.
Researchers at UC Berkeley used mechanical stretching to guide bone marrow stem cells towards becoming smooth muscle tissue, similar to that found in blood vessels. The study suggests that a combination of chemical and mechanical factors will be needed to achieve efficient cell differentiation.
Researchers have identified Tcf3, a transcription factor that regulates skin stem cells, as a key repressor switch. Activating this gene can prevent skin stem cells from maturing into adult skin cells, potentially providing insights for lab-grown stem cells and therapies.
Researchers found that nearly all tumor cells in the bone marrow of early-stage breast cancer patients have a putative breast cancer stem cell phenotype, increasing the risk of disease progression. This study provides evidence that these stem cells may be responsible for metastases and has significant implications for cancer treatment.
The University of Rochester Medical Center is establishing a leading program in Cancer Stem Cell Research to discover cures for cancer. By studying the 'master cells' of this deadly disease, scientists aim to find underlying causes and develop therapies to target cancer stem cells.
Researchers have made breakthroughs in transforming adult stem cells into various tissue types, such as blood vessel cells, nerve-like cells, and muscle-like cells. These advancements hold promise for treating conditions like Parkinson's disease, diabetes, and spinal cord injuries.
Researchers from ISREC discovered that the Nodal protein, involved in embryonic development, maintains stem cells while also providing cues for their differentiation. This understanding is crucial for coaxing stem cells to grow into specific tissues outside the body and may hold the key to controlling cancerous stem cell behavior.
Researchers at University of Pennsylvania discovered that adult stem cells depend on physical microenvironment clues to differentiate into various tissue types. By manipulating the firmness of the gel, scientists can guide stem cells towards specific fates.
Researchers have successfully induced differentiated adult cells to behave like embryonic stem cells using only four factors. This breakthrough enables the creation of pluripotent cells directly from a patient's own cells, potentially revolutionizing the treatment of diseases such as Parkinson's disease and diabetes.
Researchers have successfully induced differentiated adult cells to behave like embryonic stem cells using only four factors. The discovery could revolutionize the treatment of diseases such as Parkinson's and diabetes by providing a direct source of pluripotent cells from patients' own cells.
Researchers discovered that Bruli protein plays a crucial role in maintaining stem cells in planarians, enabling their remarkable ability to regenerate lost body parts. The study provides new insights into the fundamental mechanisms of stem cell self-renewal and its potential applications in human therapy.
Researchers at UCLA compared neural stem cells grown in the lab to those derived from donated fetal tissue and found the former expressed lower levels of a metabolic gene called CPT 1A. This abnormality may impact the effectiveness of these stem cells in treating diseases such as Parkinson's and Alzheimer's.
The Tri-Institutional Stem Cell Initiative has approved $6.7 million in funding for 17 stem cell research projects, exploring basic biology and therapeutic potential of human and model organism-derived stem cells. The grants support collaborative research across three institutions, including Memorial Sloan-Kettering Cancer Center.
Researchers at Dana-Farber Cancer Institute isolated leukemia stem cells from a mouse model, showing they are surprisingly different from normal blood stem cells. This finding may lead to the development of drugs that selectively target these cells, which could improve treatment outcomes for leukemia patients.
Scientists at the University of Pennsylvania School of Medicine have isolated a novel population of multipotent adult stem cells from human hair follicles. These cells can differentiate into nerve cells, smooth muscle cells, and melanocytes, offering potential treatments for various disorders.
Scientists have successfully produced sperm from embryonic stem cells, paving the way for new treatments for male infertility. The breakthrough, led by Karim Nayernia at Newcastle University, used mice and produced seven babies, six of which lived to adulthood.
Researchers successfully converted human embryonic stem cells into mature T-cells, a key step towards gene therapy for HIV and other diseases. The breakthrough could lead to the development of new treatments for severe combined immunodeficiency and other conditions.
Researchers from Gladstone Institutes have gained a better understanding of the use of stem cells to generate replacement cells for damaged heart muscle and vessels. The study highlights several challenges ahead, including guiding stem cells into cardiac lineage and integrating them safely within patients' heart tissue.
The inner walls of bones serve as sites for both bone breakdown and reconstruction, with osteoclasts playing a crucial role in releasing hematopoietic stem cells. This process is essential for maintaining balance in the body's response to injury or inflammation, and may have implications for bone marrow transplant techniques.
Researchers have identified a signal transduction process regulating stem-cell division, which could lead to drugs stimulating endogenous cell production. The discovery may help treat conditions such as stroke and Parkinson's by promoting the formation of new nerve cells.
Researchers have discovered that frog proteins can rescue mouse embryonic stem cells from dividing without limit, highlighting an ancient mechanism that may hold the key to understanding human disease. The study also shows that mammals have adopted this function from amphibians, suggesting a long history of stem cell regulation.
Researchers identified an intrinsic pathway involving PTEN that regulates stem cell transitions between quiescence and activity. Disrupting PTEN leads to increased active cycling and loss of quiescent stem cells, hindering long-term maintenance.
University of Wisconsin-Madison researchers have created a liquid crystal-based cell culture system to control the uncontrolled differentiation of human embryonic stem cells. The system uses mechanical strain to guide stem cells along well-defined lineages, enabling real-time monitoring and reducing the mixture of cells of little medic...
Researchers found that marrow-derived neural stem-like cells genetically engineered to produce interleukin-23 can track and destroy glioma cells, providing long-term immunity. This discovery offers a promising new therapeutic option for treating brain tumors.
University of Minnesota researchers identify a new population of cord blood stem cells that can regenerate nerve tissue after stroke. The discovery shows promise for treating neurological disorders such as stroke, which affects nearly 750,000 people in the US each year.
The sympathetic nervous system plays a crucial role in regulating hematopoietic stem cell mobilization. Researchers found that defects in the transmission of signals via this system can stall stem cell movement. Drugs that stimulate the sympathetic nervous system restored stem cell movement in mice with impaired ability to respond to n...
Researchers have discovered a way to multiply adult stem cells 30-fold, offering promise for treating blood diseases and gene therapies. This breakthrough could address the limited availability of stem cells from donors.
Feather stem cells are distributed in a ring configuration around the inner wall of the vase-shaped feather follicle. This unique arrangement allows for continuous growth, shedding, and regeneration of feathers.
Researchers at UT Southwestern have developed methods to keep sperm precursor cells from differentiating into sperm, allowing them to freeze and thaw the cells. This breakthrough could lead to alternative sources for embryonic stem cells and enable the development of new male contraceptives. The study's findings also pave the way for g...
Researchers at the University of Toronto have identified a key component blocking stem cell growth and developed a system to expand cord blood stem cells, potentially treating adult patients with leukemia. The discovery may lead to clinical trials within the next year.
A recent survey of over 2,200 Americans found broad support for human embryonic stem cell (ESC) research, with two-thirds approving or strongly approving its use. The study's findings contradict the deeply polarized debate seen in Congress and newspapers, highlighting a more nuanced public opinion landscape.
Researchers at the University of Minnesota have successfully generated natural killer cells from human embryonic stem cells that can target and destroy cancer cells. The breakthrough research suggests a potential new approach to treating cancers such as leukemia and lymphoma, and may also lead to treatments for infections.
Researchers have discovered that neural stem cells in adult mice can respond to Shh signaling and give rise to other neural cell types, including glial cells. The study also found that quiescent stem cells can self-renew after a year, with implications for tissue repair and cancer progression.
Researchers have made significant progress in understanding stem cells and their role in reproduction and the nervous system. Studies suggest that therapeutic cloning may become unnecessary once body cells can be re-programmed into stem cells.
Researchers found that the drug combination increased stem cell mobilization in 25 patients, reducing the number of necessary stem cell collections. This can lead to more successful transplantations and faster recovery for cancer patients.