Scientists at Cold Spring Harbor Laboratory identified 130 genes that affect the replication of retrovirus-like elements in yeast. These genes have clear relatives or homologs in the human genome, providing a rich source for candidate host genes to develop new anti-retroviral therapeutics.
Researchers analyzed gene-expression libraries from daf-2 mutants to identify genes critical to aging. They found that metabolic processes were repressed in early and mid-life adults, contributing to longevity. Stress-response factors were also differentially expressed, suggesting protection against cellular stress may increase lifespan.
Researchers identify FMRP RNA ligands containing 'kissing complex' motifs, redirecting search for disease targets. The study also reveals a crucial link between FMRP, mRNA translation regulation and neurologic dysfunction in Fragile X syndrome.
Researchers discover that MT1-MMP controls blood vessel response to PDGF-ß signaling, essential for normal vessel formation. MT1-MMP-null mice exhibit severely compromised vascular architecture, suggesting potential therapeutic targets for controlling tumor growth and metastasis.
Researchers have identified a novel protein, MKRN1, that regulates telomerase activity and maintains cellular telomere lengths. Increasing MKRN1 levels in cells promotes the degradation of telomerase enzyme hTERT, leading to decreased telomerase activity and shorter telomeres.
HHMI has tapped two Long Island researchers, Scott Lowe and Gregory Hannon, as among the nation's most promising scientists. The Institute is investing over $300 million in their research over the next seven years.
The study reveals that antisense transcripts (SATs) are widely expressed in various mouse tissues and cell cultures, exhibiting tissue-specific expression patterns. SATs tend to be poly(A)-negative and enriched in the nucleus, suggesting a functional role in gene regulation.
Neuroscientist Dmitri Chklovskii's study reveals non-random patterns of local connectivity in the rat brain, suggesting functional modules that process information. The researchers found that strong connections account for half of synaptic strength and play a crucial role in brain function.
Researchers found that 21 snake venom toxins originated from proteins in various body tissues, including brain, eye, and liver. This discovery sheds light on the evolution of these potent toxins and their potential use in medical research.
Researchers have deciphered a crucial link between genetic microdeletions and DiGeorge syndrome, shedding light on the disease's pathogenesis. The study reveals that TGF signaling plays a pivotal role in neural crest development, which is disrupted in DiGeorge patients leading to characteristic malformations.
Researchers developed a mathematical model that explains how the brain carries out working memory tasks, including loading, holding, and comparing information. The model makes predictions about the neurological basis of working memory.
A study on young zebra finches reveals that dramatic degradation in song quality occurs after waking up from sleep, only to improve with morning rehearsal. Ultimately, better singers have poorer post-sleep deterioration of song development.
Researchers identify 22 new human-specific genes, including RanBP2, which evolved unique functions through gene duplication and domain acquisition. The study reveals a key role for gene duplication in evolution and sheds light on species specificity.
A study published in Genes and Development reveals a novel molecular player influencing colon cancer initiation. The research found that combining Foxl1 deficiency with an inactive APC gene accelerated tumor formation, highlighting the significance of mesenchymal-epithelial signaling in gastrointestinal tumorigenesis.
Researchers found that brain activity in the hippocampus and perirhinal cortex predicts accurate or false memories. Weak prefrontal cortex activity during misinformation phase indicates poorly placed details, creating false memories.
Researchers have identified a previously unknown sequence on the human Y chromosome, containing eight potentially active genes. This discovery suggests that segmental duplications in pericentromeric regions may be underrepresented in current genome sequences.
Researchers have identified a subset of tumor cells that resist inhibition of the Hedgehog signaling pathway, leading to cancer recurrence. However, targeting these residual cell populations could lead to effective treatment of basal cell carcinoma.
The newly published chicken genomic sequence provides significant information on vertebrate evolution, revealing a clade of at least 9,600 avian species. The analysis also sheds light on the unusual genomic organization of chickens, including large variability in chromosome size and germline mutations.
Scientists found that animals with extra copies of the AMP-1 enzyme lived 13% longer than controls, while environmental stressors activating AMP-1 also led to longer lives. The study's findings have broad implications for understanding human aging and potentially extending lifespan through exercise and therapeutics.
The genomic sequence of the coelacanth, a 'living fossil,' holds valuable clues for biologists studying vertebrate evolution. The completed genome analysis reveals slow evolutionary changes relative to land vertebrates and teleost fishes, making it a better reference for comparative sequence analyses.
Researchers have developed 'supermice' with an extra copy of the Ink4a/Arf tumor suppressor locus, revealing increased resistance to cancer. The study implies that differences in gene expression levels of tumor suppressors significantly contribute to the risk of developing cancers and may influence therapeutic development.
Researchers at Cold Spring Harbor Laboratory discovered a lean gene, C/EBPbeta, which helps mice live longer and weigh less. The gene's activation may help jump-start metabolism in fat cells, preventing fat accumulation. Another study found that targeting the JIP1 protein can effectively protect against obesity and insulin resistance.
A new study reveals that Argonaute2 is the key enzyme responsible for RNAi-mediated messenger RNA cleavage in mammals. The findings suggest that Argonaute2 provides the 'Slicer' activity necessary for siRNA-targeted mRNA cleavage.
A new study reveals surprising differences in the DNA of normal cells from different people, detecting 76 large-scale 'copy number polymorphisms' associated with various health conditions. The researchers used a powerful new DNA profiling technique called ROMA, which identified genes involved in neurological development and cancer.
Scientists discovered that deleting three circadian genes in mice results in severe epilepsy and accelerated aging. The mice lacking all three genes are prone to epileptic seizures and display early mortality, with a significant increase in deaths on Mondays and Thursdays due to sound-induced attacks.
Researchers Drs Sun and Arceci find that loss of PASG gene results in reduced genomic methylation and premature aging in mice. The study reveals a potential model for studying aging and epigenetic regulation, with implications for cancer predisposition and therapeutic targeting.
A human genome-wide RNAi library has been developed by Cold Spring Harbor Laboratory, enabling companies to identify and validate target genes for new drugs. The library targets over 10,000 human genes with sequence-validated short hairpin RNA molecules.
Researchers developed a novel method to compare genetic changes in developing mice with those in medulloblastoma, revealing common features with early developmental stages. This study provides a foundation for further research into tumor diagnosis and prognosis.
A combination of two existing drugs, rapamycin and doxorubicin, was found to be effective in treating cancer by restoring a natural cell death mechanism and triggering programmed cell death. The treatment led to complete remission in mouse models of B-cell lymphoma.
Researchers have identified a critical gene called Lgl1, which plays a vital role in shaping cell behavior during embryonic brain development. The study found that mice lacking this gene exhibit dramatic abnormalities and resemble human patients with medulloblastoma, a type of brain tumor.
Researchers identified a critical protein, NADPH oxidase 3 (Nox3), essential for otoconia development and balance. The discovery may aid in regenerating otoconia and treating balance-related disorders.
Scientists have developed a method to simultaneously track gene transcription, RNA splicing, and protein translation in living cells. The technique reveals fundamental information about how genes are switched on and off in the context of living cells.
A recent study has discovered how calorie restriction activates a specific gene called SIR2, leading to increased longevity in yeast and potentially other organisms. The researchers found that a decrease in the levels of NADH allows NAD to better activate Sir2, resulting in extended life span.
Researchers develop methylation filtration method to capture gene-rich regions, excluding repetitive DNA, and achieve 93% reduction in sequencing time. The approach enables complete gene sequence recovery from difficult-to-decipher genomes.
The International HapMap Project aims to map the locations of representative tag SNPs in DNA samples from diverse populations. The project's results will increase the power and reduce the cost of future genetic association studies, significantly speeding up the discovery of genes involved in common diseases.
Researchers found that the hormone estradiol plays a crucial role in proplatelet formation, enabling the creation of new blood platelets. This discovery may lead to alternative treatments for conditions such as anemia and thrombocytopenia.
Researchers at Cold Spring Harbor Laboratory found that rats can rapidly and accurately discriminate odors with just one sniff. The study, led by Zach Mainen, reveals vital new information about how the human brain processes information and guides behavior, suggesting that smell is a fast sense rather than a slow one.
Researchers uncover two neighboring genes, Rsl1 and Rsl2, that repress male-specific liver gene expression in female mice. This discovery sheds light on the genetic basis for gender differences in liver function, revealing a complex interplay between multiple genes.
Researchers have identified a receptor on sea urchin eggs that regulates the species-specific adhesion of sperm, preventing cross-fertilization between different species. The discovery provides insights into the molecular mechanisms of gamete interactions and could shed light on how new species evolved.
Scientists discover 'synoviolin', an enzyme that contributes to RA progression by over-growing synovial cells. Reducing synoviolin levels could halt joint destruction, offering new insights into RA etiology and innovative therapies.
Researchers have discovered a direct correlation between Bmp4 activity levels and septum development in congenital heart disease. By manipulating Bmp4 expression, the team recreated the full spectrum of defects seen in AVCD patients, providing a valuable genetic model for future research.
Researchers developed a powerful new method called ROMA to compare normal cell DNA with breast cancer DNA, revealing chromosomal amplifications and deletions involved in breast cancer. The study also found large copy number polymorphisms in healthy cells that may underlie human traits.
Researchers uncover unexpected new role for GATA-3 in hair follicle development, shedding light on parallel molecular cues between skin and immune systems. GATA-3-deficient mice exhibit severe structural anomalies in hair development, including bent whiskers and irregular thickenings.
A molecule called nitric oxide is a natural regulator of new neurons in the adult brain. Blocking nitric oxide production stimulates neural stem cell proliferation, increasing brain neuron generation and contributing to the adult brain's architecture.
Researchers identified a previously unknown protein family, chaplins A-H, essential for S. coelicolor's aerial hyphae formation. Exogenous application of chaplin proteins restores aerial growth in streptomycetes lacking specific genes.
Researchers found that MYC binds to the WRN gene promoter, activating WRN expression and promoting cellular senescence in tumor cells. This discovery suggests a potential therapeutic target for cancer treatment by inhibiting WRN in MYC-induced tumor cells.
Scientists discover that cellular senescence involves packaging of specific chromosomal regions into heterochromatin, which triggers a 'stop growing' response in cells. The study reveals genes are switched on in proliferating cells but silenced during senescence.
Researchers have created a new RNAi vector called pDECAP that allows for tissue-specific suppression of gene expression in mammals. This breakthrough technology enables the efficient exploration of gene function by avoiding the antiviral response to foreign dsRNA, a major complication in mammalian RNAi research.
Researchers identify Plcg1 as a crucial regulator of arterial cell fate during development, contradicting previous assumptions about blood vessel formation. The study uses zebrafish as a model organism to uncover novel insights into vascular development and its potential applications in human disease.
Scientists at the University of Michigan Medical School have discovered that ß-catenin can induce new hair growth in adult hair follicles. The study found that brief activation of ß-catenin in telogen-phase hair follicles is sufficient to initiate the anagen phase, leading to new hair growth within 15 days.