Scientists have developed a new method for converting adult cells into embryonic stem cell-like cells using a single virus, cutting the number of viruses used from four to one. This approach eliminates the risks associated with multiple viruses and could potentially be used to treat diseases such as Parkinson's and diabetes.
Researchers discovered the MLL-AF4 protein binds to over 169 genes in cancer cells, hijacking blood stem cell machinery and causing cancerous cell division. This understanding may lead to new drug targets for treating mixed-lineage leukemia.
A study published in Science reveals that the Dazl protein plays a crucial role in initiating meiosis in response to retinoic acid signals. The researchers found that mice lacking the Dazl protein failed to express Stra8, a marker of meiotic initiation, whereas those with the protein clearly expressed Stra8 and entered meiosis.
Researchers discovered that misfolded proteins trigger a mechanism in yeast cells, allowing them to adapt to stress and evolve more quickly. Under stressful conditions, the cells create prions, which can induce beneficial changes, such as enhanced growth on energy sources or resistance to antibiotics.
Scientists have discovered a new clue for understanding how misfolded proteins cause cell death in Huntington's disease. The study found that polyQ-expanded proteins interact with and trap other proteins, leading to a breakdown in protein quality control, which may contribute to the disease's toxicity.
Researchers have developed a technique using soft lithography to create 'snapshots' of immune cell populations, offering insights into antibody diversity and potential for vaccine development. This innovation could lead to more effective diagnostic tools and personalized treatments.
A billion-year-old history of microRNAs has been discovered in ancient animal lineages, including sponges and starlet sea anemones. This finding suggests that these tiny molecules have evolved rapidly across various species, potentially playing a key role in the emergence of multicellular life.
Researchers discovered how microRNAs fit into the map of embryonic stem cell circuitry, providing clues for targeting specific microRNAs to direct an embryonic stem cell into another type of cell. The study also provides a better platform for analyzing microRNA gene expression in cancer and other diseases.
Researchers discover a drug-like molecule called Wnt that can substitute for the cancer-causing gene c-Myc to create embryonic-like stem cells. This breakthrough aims to develop safe and efficient methods for treating diseases such as Parkinson's disease and diabetes using induced pluripotent stem cells.
Researchers at Whitehead Institute develop a technique to produce genetically identical induced pluripotent stem (IPS) cells, offering new efficiencies in embryonic stem cell research. This breakthrough allows for the creation of large numbers of IPS cells without genetic variation.
Researchers have identified an embryonic pathway that confers adult stem cell properties to both normal and cancer cells undergoing epithelial-to-mesenchymal transition, offering a potential route to generate unlimited numbers of stem cells. This discovery has major implications for regenerative medicine and cancer treatment.
Researchers have successfully reprogrammed fully mature, differentiated B cells into an embryonic-stem-cell-like state without using eggs. This breakthrough enables the creation of powerful mouse models for autoimmune diseases like multiple sclerosis and type 1 diabetes.
Researchers successfully transplanted dopamine-producing neurons from reprogrammed skin cells into adult rat brains, reducing behavioral symptoms related to low dopamine levels. The study demonstrates the therapeutic potential of reprogrammed cells in treating Parkinson's disease.
Scientists discovered microRNA-223, which controls the production and activation of granulocytes in the innate immune response. Absence of microRNA-223 increased tissue inflammation and damage.
Researchers at Whitehead Institute have modeled the complete process of nucleus ejection in mature red blood cells, revealing key proteins involved. The discovery sheds light on an essential step in mammalian evolution and may lead to insights into genetic disorders.
Researchers have established a direct causal connection between hypermethylation and colon tumor development in mice. Hypermethylation switches off tumor suppressor genes, boosting tumors by 60-100 percent.
Researchers have found that double-strand DNA breaks occur more frequently in specific regions near telomeres and centromeres, increasing the likelihood of chromosome gene swapping. This discovery may lead to a better understanding of developmental chromosome abnormalities and birth defects.
Researchers have found that adult stem cells do not rely on the protein Oct4 to remain undifferentiated. Studies using sensitive assays failed to detect Oct4 in these cells, revealing a different regulation of pluripotency in adult versus embryonic stem cells.
A recent study shows that overabundance of a single microRNA, microRNA-10b, can cause tumors to spread to distant tissues in mice. Researchers found that this microRNA disrupts the normal migration process of cancer cells by targeting the HoxD10 gene.
A study found that heat-shock transcription factor HSF1 enables normal cells to become cancerous by orchestrating proliferation and survival processes. Depriving cancer cells of HSF1 strongly suppresses their growth and survival, offering a potential new approach to fighting cancer.
Researchers have successfully identified reprogrammed cells in mice without using genetic markers, simplifying the process and potentially yielding a bountiful supply of custom human embryonic stem cells. This breakthrough brings human stem cell therapies closer to reality and eliminates one major hurdle to reprogramming human cells.
Researchers have created cancer stem cells in a Petri dish from human breast tissue, which can initiate tumors and metastasize. The new study provides clues about the trajectory of cancer cells and offers a boon to researchers studying these elusive cells.
A study has discovered that many human genes hover between 'on' and 'off' in any given cell, failing to finish transcription but remaining primed. This vulnerability could explain why cells acquire new properties in diseases like cancer and diabetes.
Researchers discovered that neutrophils recognize and respond to a specific form of sugar called beta-1,6-glucan on the surface of fungi, which elicits a stronger reaction than another sugar with similar chemical properties. This unique sugar may help stimulate the immune system and combat deadly pathogens.
Researchers at Whitehead Institute successfully reprogrammed mature skin cells into pluripotent cells, identical to embryonic stem cells, without using eggs or destroying embryos. These cells can give rise to live mice and transmit their genetic material to subsequent generations.
Researchers developed a cell culture test for assessing genetic toxicity that may prove dramatically cheaper than existing animal tests. The assay allows genetic toxicity to be examined far earlier in the drug development process, making it much more efficient.
Researchers have discovered critical regions within prions that determine much of their behavior, providing a new framework for exploring prion biology. These regions, known as recognition elements, can be activated by environmental conditions and amino acid sequence alterations.
Researchers from the Whitehead Institute have discovered that a specific microRNA helps prevent tumor formation by regulating the Hmga2 gene. In mice with compromised immune systems, cells expressing Hmga2 with disrupted let-7 sites developed tumors, highlighting a new mechanism for cancer formation.
Researchers have identified a set of genes controlled by Foxp3 that lie at the core of autoimmune disease. The discovery provides an initial map of regulatory T cell circuitry and may help develop new methods for manipulating immune system activity.
Scientists have engineered yeast to improve ethanol production efficiency by increasing tolerance to high ethanol levels and producing more ethanol during fermentation. The new strain of yeast can survive elevated ethanol concentrations and produces 50% more ethanol in a shorter period.
Researchers found that antisense RNA molecules protect sex cells from self-destructing by blocking sense RNA production. This discovery reveals a new process of gene regulation and its potential application to mammals.
A new study uses a 3D model to reveal the secrets of metastasis in human prostate tumor cells. Cells move slower and need to chop or squeeze through fibers to progress. The research provides insights into why two-dimensional assays for metastasis-inhibiting drugs are not effective.
Researchers at Whitehead Institute identified a critical biological pathway responsible for Parkinson's symptoms and developed a treatment to repair it. Increasing levels of a transport protein restored normal neurological function in animal models, including fruit flies, worms, and rats with alpha-synuclein-induced Parkinson's symptoms.
Researchers successfully mapped the regulatory circuitry of human embryonic stem cells using microarray technology. The study reveals that Polycomb group proteins play a crucial role in repressing genes essential for later development, leading to uncontrolled growth when these genes are lost.
Researchers discovered that the normal form of mad cow protein promotes neurogenesis by helping precursor cells differentiate into mature neurons. The study found that increased levels of PrP accelerate neuron production, while decreased levels slow it down.
Researchers have alleviated symptoms of Rett syndrome in mice by hyper-expressing the BDNF gene, which showed a drastic reduction in lethargy and improved cortical neuron activity. The findings may lead to potential therapeutic strategies for treating the condition.
Researchers discovered that PrP protein plays a crucial role in maintaining healthy human stem cells, particularly in the brain. The findings suggest that PrP's positive function is essential for preventing prion-related neurodegenerative diseases.
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.
Researchers at Whitehead Institute have concluded that cloned and fertilization-derived stem cells are indistinguishable, with similar gene-expression profiles. This breakthrough paves the way for individualized cellular therapies for treating certain disorders.
A new study published in Science demonstrates that microRNAs affect the expression or evolution of the majority of human genes. The researchers found that nearly all genes contain short sequences matching microRNA target sites, which are evolutionarily conserved across species.
Scientists have successfully developed a proof-of-concept for Altered Nuclear Transfer (ANT), an alternative to somatic cell nuclear transfer (SCNT) that enables the creation of genetically altered embryos without implantation. The method uses RNA interference to disable genes in donor nuclei, producing stem cells with disabled Cdx2 fu...
A team of researchers has identified three key transcription factors that enable human embryonic stem cells to maintain pluripotency. By understanding the regulatory circuitry controlling these cells, scientists can now develop strategies to coax them into specific cell types for regenerative medicine applications.
Melanoma cells can efficiently spread due to reactivation of dormant Slug gene, which enables swift travel through the body. This discovery sheds light on why melanoma metastasizes at an earlier stage than other cancers.
Researchers found that human Y chromosome retained its genes despite chimp's mutation, likely due to human monogamy. The study suggests natural selection preserved regions of the Y with self-repair mechanisms.
Research reveals fungal microbes use tandem repeats in genes to change protein conformations, evading the immune system and causing diseases. The study also explains why certain beers are cloudy or clear, providing new insights into brewing.
Scientists have found a way to analyze the configuration of amyloid fibers using yeast strains, providing insights into how prions interact with each other. The study reveals that prions have only two points of contact, known as the 'head' and 'tail,' which determine their interactions.
Breast cancer tumors hijack normal wound-healing processes by exploiting stromal cells' production of SDF-1, which recruits endothelial precursor cells for tumor growth. This process enables tumors to access nutrients and grow unchecked.
The researchers found that activating the Oct4 gene in adult tissue causes tumors by preventing stem cells from differentiating. This discovery may allow scientists to multiply adult stem cells in the lab without forming mature tissue.
Researchers at Whitehead Institute discover mTOR/rictor complex, a crucial component in Akt's activation process. This finding holds promise for developing targeted cancer therapies by blocking the complex and preventing tumor growth.
A recent study published in the journal Cell has found that over 30% of human genes are controlled by RNA molecules, providing new insights into gene regulation. The researchers used computational methods to identify microRNAs that target specific genes, revealing a vast network of regulatory interactions.