Whitehead Institute researchers uncover a novel association between dectin-1 and galectin-3 in macrophages, enabling the immune system to discriminate between non-pathogenic and pathogenic fungi. This discovery may lead to the development of more effective antifungal drugs.
Researchers found a novel system involving Pch2 and Orc1 proteins protecting yeast rDNA from inappropriate meiotic recombination. This protective repeat-associated heterochromatin makes the DNA segments near its boundary particularly vulnerable to recombination.
Researchers at Whitehead Institute have identified a protein called phosphoglycerate dehydrogenase (PHGDH) that is crucial for the growth of estrogen receptor-negative breast cancer cells. PHGDH is overexpressed in approximately 70% of ER-negative breast cancer patients, making it a promising target for drug development.
Researchers have successfully manipulated targeted genes in human embryonic and induced pluripotent stem cells using zinc finger nucleases and transcription activator like effector nucleases. This precision enables the study of genetic diseases and the development of disease-modifying drugs.
Breast cancer stem cells can be induced to transition into a mesenchymal and stem cell-like state by signals from breast epithelial cells. Blocking these autocrine signals inhibits the growth of tumors in animal models. The study suggests that targeting these signals could lead to effective treatment for breast cancer.
Researchers at Whitehead Institute found that depriving human melanoma cells of the essential amino acid leucine can lead to their death. Leucine deprivation triggers apoptosis in melanoma cells, providing a potential framework for targeted therapy. The study suggests that inhibiting autophagy with chloroquine may enhance this effect.
Researchers found that a gene called notum determines whether planarian regrow head or tail at amputation sites. This study suggests that animals can 'decide' what needs to be regenerated based on tissue orientation at wound sites.
Researchers at Whitehead Institute have discovered that planarian flatworms possess pluripotent stem cells called clonogenic neoblasts, which can differentiate into various tissue types and even replace all tissues in a host. This finding has significant implications for understanding regeneration in mammals.
Researchers discover CENP-C and CENP-T proteins, which are essential for kinetochore assembly and can potentially overcome the current obstacle of outfitting artificial chromosomes with kinetochores. This finding could lead to new genetic research tools and efficient creation of artificial human chromosomes.
An international team identified a genetic mutation responsible for a hereditary neurological disorder affecting members of a Palestinian family. The researchers used a combination of genome sequencing technology and disease-network analysis to pinpoint the causative mutation, which is found in approximately 1 in 200 Palestinians.
Whitehead Institute researchers found that differentiated cells in breast tissue can convert to a stem-cell-like state, challenging scientific dogma. This behavior may have implications for cancer therapeutics and degenerative disease therapy.
The authors refine the original six hallmarks using information from transgenic animals and biochemical assays, adding two new categories: enabling characteristics and emerging hallmarks. This updated review provides a solid basis for cancer research and identifies therapeutic targets.
Developmental biologist Hazel Sive proposes using the term 'tool' to define biological systems that don't accurately recapitulate human disorders, but provide valuable insights. These 'tools' can be used in loss-of-function studies and screening for chemicals that affect gene activity, potentially leading to therapeutic targets.
Whitehead Institute scientists have developed a novel method using the enzyme sortase A to site-specifically modify proteins, increasing their potency, thermal stability, and metabolism. This technique can be applied to improve therapeutically important proteins such as interferon alpha 2 and granulocyte colony-stimulating factor 3.
Researchers discovered that heat shock protein 90 affects a large portion of the yeast genome, revealing multiple traits simultaneously and instantly. This allows for rapid evolution of interdependent traits, leading to a better adaptation to stressful environments.
Research reveals that the mechanistic target of rapamycin complex 1 (mTORC1) pathway plays a crucial role in reducing ketone production, a hallmark of aging in mice. The study found that activating mTORC1 decreases ketogenesis, and suppressing it prevents the decline in ketone levels associated with aging.
Researchers have identified a new drug class that can enhance red blood cell production in anemic patients, potentially treating Diamond-Blackfan anemia and other conditions. The discovery was made by determining how corticosteroids act to increase the production of red blood cell progenitors.
In mouse models, overexpression of microRNA 125b (miR-125b) causes leukemia and accelerates its progression. The study found that miR-125b is a major cancer-causing microRNA, leading to different types of leukemia.
Researchers found a unique genome structure formed by protein complexes that regulate cell-type-specific genes, leading to developmental diseases. Deficiencies in these complexes can cause syndromes like Opitz-Kaveggia syndrome and schizophrenia.
Researchers discovered that microRNAs primarily disable mRNA templates to control protein production. This allows for easier study of gene targets through mRNA levels rather than protein levels.
Researchers found that human embryonic stem cells and reprogrammed cells exhibit very few differences in gene expression signatures and are nearly indistinguishable in their chromatin state, according to Whitehead Institute researchers. This study suggests that reprogrammed cells may indeed hold clinical promise ascribed to them earlier.
Researchers identified Musashi 2 as a predictive marker for prognosis in AML and CML patients. High levels of Musashi 2 associated with increased cell proliferation, decreased maturation, and aggressive cancer behavior.
Researchers have successfully reprogrammed human blood cells to an embryonic stem-cell-like state, opening up new possibilities for studying genetic and molecular mechanisms of blood disorders and other diseases. This breakthrough uses frozen blood samples from blood banks, providing a readily available source of pluripotent stem cells.
Gerald Fink has been recognized with the 2010 Gruber Genetics Prize for his revolutionary transformation technique, enabling gene insertion into yeast cells. This breakthrough allows scientists to study specific genes and produce compounds used in vaccines, antibiotics, and biofuel.
Researchers have determined how cells regulate microtubule attachments during cell division, a process critical for proper chromosomal distribution. The system relies on phosphorylation and dephosphorylation of key proteins, controlled by enzymes Aurora B and PP1, to correct attachment problems and maintain accurate chromosome separation.
Researchers found that low oxygen levels prevent X chromosome inactivation in human embryonic stem cells, which can lead to a less flexible and pluripotent state. The study suggests that conventional lab methods may not be optimal, and alternative approaches are needed to maintain human ES cells' pluripotency.
Researchers have developed a method to convert human induced pluripotent stem (iPS) and embryonic stem (ES) cells to a more flexible state, similar to mouse ES cells. This breakthrough could improve the efficiency of gene targeting and potentially lead to new therapeutic applications for human ES and iPS cells.
A new study in embryonic stem cells uncovered a transcription control mechanism that regulates expression of 80% of mammalian genes. The cancer-causing gene c-Myc plays a significant role in releasing transcriptional pausing, leading to hyper-proliferation characteristic of cancer cells.
Researchers at Whitehead Institute have created novel mouse models that accurately reflect the immune system's response to pathogens. The models use somatic cell nuclear transfer (SCNT) to create mice from single T cells primed for toxoplasmosis, allowing for a more precise study of the immune system.
The human and chimpanzee Y chromosomes differ significantly in structure and gene content, with the chimp Y having lost up to half of its human counterpart's genes. This rapid evolution is thought to be driven by intense sperm competition between males, leading to the favoring of advantageous sperm production genes over detrimental ones.
Researchers discovered four small molecules capable of protecting cells from alpha-synuclein toxicity, a hallmark of Parkinson's disease. The compounds improved protein trafficking and decreased mitochondrial damage in multiple models, suggesting potential therapeutic avenues for the disease.
Researchers developed a genetic screen for human cells to pinpoint specific genes and proteins used by pathogens. The study identified new genes essential for host-pathogen interactions, including those involved in diphtheria and E. coli infections.
Researchers found that wntP-1 gene expression occurs at all wound sites, triggering regeneration polarity in planaria. Blocking the gene results in heads regrowing instead of tails.
Researchers have found RNA interference (RNAi) in budding yeast species, including Saccharomyces castellii and Candida albicans. The discovery opens up new possibilities for studying RNAi and its potential applications in human diseases, research, industry, and pharmaceuticals. This breakthrough also highlights the importance of collab...
A recent study found that an abnormal Y chromosome structure called an isodicentric Y (idicY) can lead to spermatogenic failure in males. The researchers also discovered a correlation between the size of the idicY chromosome and the likelihood of sex reversal, potentially linking it to Turner syndrome.
Researchers at Whitehead Institute have shown that a single gene mutation can cause a transmissible neurodegenerative disease in mice, similar to human fatal familial insomnia. The study demonstrates that mutations associated with prion diseases are sufficient to cause the disease and the spontaneous generation of transmissible prions.
Scientists have found that the ends of mRNAs may play a role in preventing normal cells from becoming cancerous. In normal cells, long 3'UTRs regulate gene expression, but in cancer cells, these regulatory sequences are often lost, leading to overproduction of proteins and uncontrolled cell growth.
Researchers discover a chemical that selectively kills cancer stem cells, which enable cancers to spread and reemerge after treatment. The compound, salinomycin, shows surprising potency against laboratory-created and naturally occurring cancer stem cells.
Researchers have developed a new technique to efficiently edit genes in human embryonic stem cells, enabling the creation of specific cell types for modeling genetic diseases. The method uses zinc finger nucleases to cut out one gene and substitute it with another, allowing precise control over gene expression.
A rapid and inexpensive drug-screening method developed by Whitehead Institute scientists uses baker's yeast to synthesize and screen molecules, cutting testing time to weeks. The technique targets protein-protein interactions found in cellular processes, offering new potential for treating diseases like Parkinson's.
Researchers at Whitehead Institute for Biomedical Research discovered a microRNA, miR-31, that inversely correlates with metastasis in breast cancer. Increasing miR-31 levels can help predict patient prognoses and potentially aid in the development of targeted therapies.
Whitehead Institute researchers have identified 24 prion candidates in yeast, shifting the view from biological anomalies to mediators of trait inheritance. Prions in yeast appear to prepare individual organisms for environmental changes, sometimes providing a survival advantage.
Whitehead Institute member Peter Reddien has been awarded an Early Career Scientist position by the Howard Hughes Medical Institute (HHMI), providing him with a six-year funded research program. He will investigate regeneration in planaria flatworms, a project that aligns with HHMI's goals to support innovative and creative science.
Researchers at Whitehead Institute and National University of Singapore have discovered a microRNA, miRNA-125b, that downregulates the tumor-suppressor gene p53. This finding provides new insights into cancer development and highlights the complex regulatory mechanisms controlling critical genes.
Whitehead Institute researchers have identified a cellular pathway that determines whether cancerous tumors are susceptible to dietary restriction. The study found that permanently activated PI3K pathway allows tumors to grow independent of food consumption, while normal functioning leads to tumor shrinkage.
Scientists at Whitehead Institute have successfully removed cancer-causing genes from human skin cells reprogrammed into embryonic-stem-cell-like state, creating patient-specific stem cells. These cells can be matured into dopamine-producing neurons, which degenerate in Parkinson's disease patients.
Researchers have created an algorithm that analyzes gene expression and protein production to identify genes and pathways that can affect cell survival. The new method, ResponseNet, has led to new insights into the connection between alpha-synuclein toxicity and basic cell processes.
Researchers at Whitehead Institute found that combining an antifungal agent with Hsp90 inhibition is effective against multiple types of resistant fungal infections. The treatment could lead to development of novel therapies for patients with compromised immune systems, who suffer high mortality rates from these infections.
Scientists at Whitehead Institute and MIT's Picower Institute have successfully treated a mouse model of Rett syndrome with daily injections of an active fragment of IGF-1, significantly reducing movement and respiratory irregularities. The treatment promotes nerve cell maturation and increases brain levels of IGF-1.
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.