Articles tagged with Embryonic Stem Cells
A team of international scientists has identified a mechanism for chromatin-remodeller enzymes to regulate gene expression in embryonic stem cells. By mapping the location of these enzymes across the genome, researchers found that they bind to specific nucleosomes before gene sequences, controlling access to critical DNA regions.
The study reveals that 5hmC mark acts as a key signal connecting complexes that regulate gene expression, influencing cellular differentiation and energy metabolism in embryonic stem cells. The findings suggest that 5hmC may play a central role in the coordinated evolution of chromatin-related proteins.
Scientists have created a new mouse-human modeling platform that can study neural crest development and model diseases like melanoma and neurofibromatosis. The system uses human committed stem cells injected into mouse embryos, resulting in successfully integrated chimeras with disease-relevant human cells.
Scientists have developed a method to detect and preserve human pluripotent stem cells, which can become any cell type, for potential use in treating diseases. The technique allows researchers to isolate and maintain these cells, which are difficult to cultivate, using a reporter linked to fluorescent protein.
Researchers discovered that human macrophages can divide and self-renew by activating a gene network similar to one found in embryonic stem cells. This finding could provide new directions in regenerative medicine and therapies, potentially replacing diseased tissue without using embryonic or induced pluripotent stem cells.
A new study using mouse embryonic stem cells found that gene mutations leading to Complex I deficiency cause significant differences in early patterns of cellular gene expression. The mutations also disrupted energy-producing processes, affecting neuronal development and the initiation of a heartbeat.
Researchers at Rockefeller University discover a new signaling mechanism that instructs cells to become stem cells during embryonic development. The finding suggests that stem cells may exist before the niche is formed and has implications for understanding skin cancer treatments.
Scientists have developed a new protocol to study DNA methylation and gene expression in single cells, revealing hundreds of individual associations between epigenetic regions and gene expression. This breakthrough provides insights into how pluripotency is maintained and cell differentiation is regulated.
Researchers have discovered that the DNA-binding protein Foxd3 acts as a genetic traffic signal, holding stem cells in readiness for transformation during early embryonic development. This discovery sheds light on how development works and has important implications for understanding developmental and adult diseases.
Aryeh Warmflash, a Rice University professor, has received a prestigious NSF CAREER Award to investigate the mechanisms of embryonic cell differentiation. He aims to develop theoretical models to predict patterns of cell development and engineer embryonic-like systems.
Human pluripotent stem cells have been shown to develop normally when transplanted into an embryo, offering new hope for regenerative medicine treatments. The study provides strong evidence that stem cells are likely to be safe and effective for treating serious conditions like heart disease and Parkinson's disease.
A new analysis explores the possibility of in vitro gametogenesis for human reproduction, allowing same-sex couples to have biologically related children. The procedure could also enable 'perfecting reproduction' by making prenatal selection easier and more robust.
A new study has shown that human embryonic stem cells are fit for use in patients, paving the way for clinical trials of cell therapies. The research also establishes a cost-effective approach for monitoring the quality of stem cell-based products and emerging cell therapies.
Researchers at Stanford University School of Medicine discovered that genetic material from ancient viral infections is critical to human development. Blocking the production of a specific RNA molecule stops development in its tracks, they found.
Researchers at EMBL used a new technique to prevent cell contraction, identifying crucial cells for ventral furrow formation. The shape of the tissue dictates the direction of contraction, not internal programming.
Researchers at the Babraham Institute have discovered a delicate balance between three key transcription factors that determine the fate of trophoblast stem cells. This balance, rather than the presence or absence of individual factors, dictates whether stem cells self-renew or differentiate into specialized cell types.
Researchers discovered that changes in metabolites can distinguish between naive and primed pluripotent cells, enabling the use of embryonic stem cells to grow new tissues and organs. The study also found that manipulating metabolite levels could stabilize cell fate in treating common disorders.
A new study has revealed reasons why lab-grown stem cells fail to mature in the laboratory and provided a possible solution to overcome these 'developmental arrest'. The researchers analyzed over 200 heart cell samples from mice embryos and animals, identifying biochemical pathways that are out of sync with adult cells.
Recent stem cell research has made significant progress in deriving induced pluripotent stem cells from various sources, including adipose tissue-derived cells. The study also explores epigenetic roles in somatic reprogramming, embryonic development, and disease treatment. Researchers have identified critical factors for efficient gene...
The study maps gene expression during early development of mice and common marmosets, pinpointing changes that regulate pluripotency. The complex network of gene regulation supporting pluripotency is analyzed, with implications for cell reprogramming and assisted conception.
The study has tremendous potential to improve our understanding of early development, enhance disease modeling, and promote therapeutic discovery. Researchers believe that work on chimeric embryos is vital to advance this field despite ethical concerns.
Researchers have created a 3D printing technique that produces highly uniform 'blocks' of embryonic stem cells, which can be used as building blocks to construct tissue constructs, larger structures of tissues, and potentially even micro-organs. The method outperforms existing methods in terms of cell uniformity and homogenous prolifer...
Researchers have developed an online database called Hair-GEL that provides a bird's eye view of hair follicle formation. By analyzing the genetic activity of skin cells during fetal development, scientists can gain insights into how stem cells and niche cells interact to form functional hair follicles.
Researchers at Harvard Medical School have found that some human induced pluripotent stem cells (iPS cells) are genetically identical to human embryonic stem cells (ES cells), suggesting they may be used interchangeably.
Human embryonic stem-cell-derived cardiomyocytes surpass bone marrow-derived cells in repairing damaged heart tissue, suggesting a better option for future therapies. The study's findings also indicate that more mature and stable heart muscle cells may be more effective than progenitor cells in clinical studies.
A study by Juan Méndez at CNIO sheds light on molecular mechanisms of ageing in blood stem cells, opening a new avenue for reducing their decline with age and potentially treating aplastic anaemia. Researchers managed to prevent embryonic lethality by increasing the levels of gene CHK1, showing less pronounced anaemia in mice.
Researchers have successfully converted skin cells into stable and fully functional placenta-generating cells, overcoming two major bottlenecks in regenerative medicine. This breakthrough resolves ethical and immune rejection issues, offering new hope for women with recurrent miscarriage and placental dysfunction diseases.
Researchers at IMIM have found that Notch protein activation intensity determines cell fate, revealing a competition between two proteins for hematopoietic stem cell formation. This study could lead to more efficient and reproducible lab-grown blood stem cells for patients with no compatible donors.
A dominant evolutionary theme emerges to predict cancer clinical outcomes, with tumors trending toward a more primitive ESC state having a worse prognosis. This study analyzed global gene expression profiles from 107 cells types and over 3,000 tumors, demonstrating the robustness of this pattern across various solid tumor cancers.
Researchers discovered 16 RNA-binding proteins whose depletion affects stem cell pluripotency and identified six RBPs making up the critical protein complex called small subunit processome (SSUP). Enhanced translational activity is crucial for ESC maintenance, while precise regulation of translation rates may influence stem cell determ...
Researchers used single-cell RNA sequencing technology to study gene expression in mouse embryonic stem cells, identifying new genes involved in pluripotency and discovering new subpopulations of cells. The findings provide insights into the links between environment and inter-cell heterogeneity.
A group of scientists from seven international laboratories failed to replicate the STAP study, which claimed to turn ordinary cells into pluripotent stem cells. Computational analysis revealed significant genomic inconsistencies, including different genders and mixtures of embryonic and placental stem cells in some experiments.
Researchers from IMCB identified 303 genes linked to proviral silencing, revealing coordinated mechanisms involving multiple cellular pathways. The study found that Chaf1a and Sumo2 are the key factors controlling this process, with potential implications for stem cell therapy and disease diagnosis.
Researchers at the University of Manchester have discovered that the placenta stores and gradually releases oxygen to support the growth of early embryos. The new study reveals how the placenta solves the problem of supplying oxygen to the embryo in its first few weeks after implantation.
The company, Newcells Biotech Ltd, will use pioneering technology to create iPSCs for pharmaceutical, biotechnology, and academic customers, offering benefits in testing treatments on cells with specific genetic make-ups.
Researchers at the Centre for Genomic Regulation have discovered a unique genetic switch that guides stem cells into developing specialized heart muscle. The discovery of the Mel18 protein is expected to reveal underlying causes of heart defects and potentially lead to new methods for controlling stem cells in the laboratory.
A novel technique identified an unusually strong 3D network of developmental genes in ESCs, physically clustered and silenced by Polycomb repressive complex (PRC1) to maintain the undifferentiated state. This mechanism allows for selective release of genes, controlling early development decisions.
Researchers at the University of Toronto have identified the process of endocytosis as a key driver of rapid embryonic healing, which coordinates cell movement to close wounds. This discovery holds promise for developing more efficient treatments for human wound repair.
Researchers at UCSF have developed a method to precisely control embryonic stem cell differentiation with beams of light, revealing an internal timer within stem cells that lets them tune out extraneous biological noise. The technique enables stem cells to transform into neurons in response to a precise external cue.
Researchers developed a stem cell model to assess the neurotoxicity of Bisphenol A (BPA) efficiently and cost-effectively. The study showed that BPA may alter embryonic development in vivo, highlighting the potential health risks associated with environmental pollution.
Researchers from INSERM have successfully induced totipotent cells, capable of producing an entire embryo and placenta, in collaboration with the Max Planck Institute. The team discovered that down-regulating a protein complex called CAF1 leads to chromatin reprogramming into a less condensed state.
Researchers have successfully directed adult stem cells to turn specifically into muscle using a new method that mimics the body's natural approach. This breakthrough could potentially help treat patients with muscular dystrophy, as well as address spinal cord injuries and other conditions.
Researchers at OHSU develop breakthrough technique to replace diseased tissue in patients with mitochondrial disease, paving the way for regenerative medicine treatments. The study uses mitochondrial replacement to create healthy mitochondria from patient skin cells, opening doors to a world of cure options.
Scientists propose using embryonic stem cells to repair damaged lung tissue, with successful results in mouse models. The study overcomes a major obstacle by harvesting stem cells from the ideal time frame for lung regeneration.
A team of researchers has identified netrin-1 as a molecule that can favour the production of induced pluripotent stem cells, which have huge potential applications in regenerative medicine. The discovery may ultimately enable the creation of new organs from patient cells, eliminating rejection risks and ethical concerns.
A joint study by IRB Barcelona researchers reveals CEP63's crucial role in brain cell division and sperm production, providing new insights into Seckel Syndrome and microcephaly. The protein's inhibition may lead to therapeutic approaches for treating these conditions.
The study identifies two enzymes, KDM4A and KDM4C, which alter gene expression in embryonic stem cells to direct their differentiation into endothelial cells. The enzymes work through epigenetic modifications, changing the activity of genes without altering DNA itself.
Researchers developed a novel live-imaging system to study gene transcription and nuclear position, enabling simultaneous measurements of these processes. The technique shows high specificity and has potential applications in studying higher-order gene regulation and cell-to-cell heterogeneity.
A study published in Cell suggests that adult neural stem cells are pre-programmed to make specific neurons before birth, contradicting the long-held assumption of their potential for neural repair. The researchers found that the precise type of neuron each stem cell can develop into is determined by its location on the ventricle wall.
A team of Temple researchers led by Dr. Raj Kishore used stem cell exosomes to induce the repair of damaged mouse hearts, improving heart function and reducing scar tissue. The study's findings suggest a unique way to regenerate the heart without using stem cells.
Researchers at Bar-Ilan University develop novel experimental model that successfully mimics the re-activation of the varicella-zoster virus, which causes chickenpox and shingles. The model allows scientists to test drugs and develop therapies to prevent shingles and potentially impact other viruses targeting the human nervous system.
Researchers at the Molecular Medicine Institute and University College London Ear Institute have created a protocol to produce inner ear hair cells, crucial for hearing and balance. The study's success suggests that similar strategies might work in humans, paving the way for cell transplantation therapies or high-throughput drug screens.
Weizmann Institute researchers resolved the debate on lymphatic system origins, discovering that lymphatic cells grow from a niche within embryonic veins. They also identified a key gene, WNT5B, which prompts stem cells to differentiate into lymphatic cells.
A molecular switch controlling heart cell maturation has been discovered, enabling the creation of adult-like heart cells in a laboratory setting. The discovery may lead to new methods for treating heart disease using stem cells.
Researchers at St. Jude Children's Research Hospital have successfully generated functional platelets from murine embryonic stems using a fine-tuned approach. This breakthrough could lead to a donor-independent source of platelets, reducing the need for volunteer donors and addressing platelet shortages.
Researchers at the Salk Institute have discovered a novel type of pluripotent stem cell capable of developing into any type of tissue. The new cells, dubbed region-selective pluripotent stem cells (rsPSCs), were easier to grow in the laboratory and offered advantages for large-scale production and gene editing.
The study, which followed four individuals for a year after they were treated with embryonic stem cell-derived retinal pigment epithelial cells, observed no serious side effects related to the therapy. The researchers reported positive results in visual acuity improvements among patients.
Researchers found neural crest cells and early pluripotent cells share similar genetic expression patterns, suggesting a subset of blastula cells may have retained activity for pluripotency. This discovery could be useful in regenerative medicine and understanding human diseases.
Researchers at the University of Missouri have identified a new form of human embryonic stem cell that can help advance research on pre-eclampsia and other reproductive problems. These 'BMP-primed' stem cells are more robust and easily manipulated than traditional stem cells, making them ideal for future studies.
Researchers at the University of Pennsylvania School of Medicine have discovered how early cells make decisions to turn on one genetic program and exclude others. By understanding this process, scientists can create new cells at will for transplantation and tissue repair in diseases such as liver or heart disease.