Articles tagged with Gene Regulation
Researchers at UT Southwestern Medical Center have discovered a previously unknown function of poly(ADP-ribose) polymerase (PARP) proteins, which regulate gene activity and RNA synthesis. This finding has therapeutic implications for cancer treatment and may also lead to new avenues for treating inflammatory and cardiovascular diseases.
Researchers construct a biophysical model to study global crosstalk in gene regulation, finding that it exists due to molecular recognition limits. The 'crosstalk floor' implies that there is a fundamental limit to this phenomenon, even with optimal adjustments to transcription factor concentrations.
A study published in PLOS Genetics has identified hundreds of genes associated with alcohol preference in rats, suggesting a strong genetic component to alcoholism. The research found that critical regulatory pathways involving several genes were crucial in regulating the desire to drink alcohol.
The study reveals dynamic changes of poly(A) tails in eggs and embryos, furthering understanding of how the fabric of life is shaped. The improved sequencing tool mTAIL-seq allows for enhanced sequencing depth to measure poly(A) tail length at a genomic scale.
Enhancers can increase the frequency of gene activity bursts, suggesting these bursts may be critical for genetic regulation. The study found that enhancer location and strength influence bursting frequencies.
Researchers at Caltech investigate the genetic switch that directs cells to become T cells, discovering a multi-tiered process involving four proteins that work together in three distinct steps. This finding has potential applications in boosting T-cell populations and fighting diseases such as AIDS.
A comprehensive study of the genetics of type 2 diabetes has unveiled significant details about the disease's underlying mechanisms. The research identified common genetic variants that contribute to an individual's risk of developing the disease, as well as genes and proteins directly involved in its development.
Researchers found conserved microRNAs involved in regulating blastema formation across three evolutionarily distant species, including salamander and ray-finned fish. The study suggests a potential common regulatory process for limb regeneration.
Researchers found that negative feedback loops act as a shock absorber to buffer damage from mutations, allowing genes to mutate without compromising function. This mechanism may foster long-term adaptation while reducing immediate fitness risk, with implications for evolution and cancer treatment.
A study published in Epigenetics & Chromatin identified a critical role for methyl-CpG-binding protein 2 (MeCP2) in regulating gene expression involved in pain perception. MeCP2 was found to be increased after nerve injury, leading to changes in downstream genes that can cause pain.
Researchers at TUM and MPI have developed a method to identify active regulatory DNA regions controlling genes. This breakthrough enables scientists to study how genes are controlled in different cell types, shedding light on gene regulation and its role in diseases.
A study led by Amita Sehgal found that a neuropeptide regulates the expression of detoxification genes in both fruitflies and mice, driving feeding behavior and having implications for chronotherapy. The findings suggest that synchrony between brain and peripheral clocks is crucial for maintaining good health.
The study discovered 70 genes that show multiple signs of adaptation, including unique amino-acid-sequence substitutions and positive natural selection. These adaptations are linked to the development of the giraffe's cardiovascular system, blood pressure, and long neck and legs.
An international team led by IU biologist David M. Kehoe uncovered the regulation of a system that allows Synechococcus to efficiently capture sunlight and perform photosynthesis. The study also provides insight into how genes can be easily transferred between cells in the marine environment through horizontal gene transfer.
Researchers identified four previously unknown genetic conditions within schizophrenia, each with distinct symptoms and disease features. The study provides a framework for finding influential genes across complex genetic diseases, enabling more precise treatment design.
A study by UCLA life scientists found that fructose damages brain genes, leading to diseases such as diabetes and cardiovascular disease. However, a diet rich in DHA reversed the harmful effects of fructose, suggesting a potential treatment for these conditions.
A team of scientists has identified a gene, HMGA2, that explains variation in beak size among Darwin's finches. The gene contributed to a rapid shift in beak size following a severe drought, enabling the medium ground finch to adapt and survive.
Researchers have identified two novel molecular players necessary to regulate plasmodesmata in plants under biotic and abiotic stress conditions. These enzymes help control the flow of nutrients, minerals, and cellular signals between cells by altering callose levels at the plasmodesmata channel.
A study found that a gene variation linked to obesity also affects food intake regulation by altering the expression of nearby genes. Reduced expression of these genes led to increased food intake and weight gain in mice.
Researchers have discovered regulatory sequences in zebrafish that can turn on genes involved in regeneration, which also exist in humans. These 'tissue regeneration enhancer elements' or TREEs may hold the key to improving human regenerative capabilities through genome editing technologies.
A study found that IGF2BP3 promotes B cell proliferation in B-cell acute lymphoblastic leukemia by regulating oncogenes like MYC. The RNA binding protein is reactivated in some cancer cells, making it an attractive target for cancer-fighting drugs.
Researchers develop approach to understand chromatin regulators, which modify DNA to alter gene expression. They found that regulators control the probability of gene expression in a population, not just individual cells.
The article highlights regional differences in demographics, disease prevalence, and cultural attitudes towards donated tissues and organs. Regulatory approaches vary across countries, necessitating a tailored approach to balance risk and benefit.
Scientists at Université de Genève found a novel regulatory mechanism in the HigBA toxin-antitoxin system that can selectively kill bacteria when they suffer from DNA damage. This discovery could lead to new treatments for bacterial infections by forcing bacteria to turn their weapons against themselves.
Researchers review gene drive systems, analyzing pros and cons, applications, and regulatory issues. They highlight the potential benefits of controlling insect-borne diseases, removing invasive species, and reversing pesticide resistance. Gene drives combine CRISPR technology to enable environmentally friendly solutions.
Researchers at the University of Chicago and Tel Aviv University have discovered a new chemical modification that can boost gene conversion to proteins. The study enriches the epitranscriptome, a critical new dimension in molecular biology, suggesting an even larger cellular control panel.
A study in yeast reveals that nutrients can affect gene expression, suggesting a complex interplay between metabolism and genetics. The findings have implications for understanding how cells respond to certain drugs and may explain why some individuals fail to respond to treatment.
A new 'Ouija Board' protein in Drosophila melanogaster flies plays a crucial role in regulating the expression of a single gene required for biosynthesis of insect steroid hormones. This study provides new insights into animal steroid hormone biosynthesis and its evolution.
Researchers have found age-dependent alterations in metabolism and gene regulation in middle-aged fruitflies, linked to a reduction in lifespan. The study identified a common process of protein acetylation as a key factor in the aging process.
A study exploring GABPa gene regulator reveals its influence as a master switch in energy metabolism and human brain evolution. Key findings include enrichment of GABPa sites at genes important for unique human functions and associations with diseases like Alzheimer's, Parkinson's, and breast cancer.
Scientists have discovered a mechanism by which the immune system retains a 'memory' of past infections, allowing for a quick and successful response upon future encounters. The study found that T cells leave behind imprints on chromosomes, enabling the immune system to rapidly respond to recurrent infections.
Researchers at Helmholtz Zentrum München developed a method to analyze protein modifications, including the phosphorylation of RNA polymerase II. This helps regulate gene expression by controlling enzyme activity at precise sites.
Scientists at Rockefeller University identified a new regulator of RNA polymerase II, a critical process for gene expression. The discovery could lead to more specific cancer therapies by targeting this form of gene regulation.
The African cheetah's genome sequence has revealed a lack of genetic variation and unique adaptations that contribute to its incredible speed. The study has shed light on the cheetah's past and its struggles with reproductive impairments, providing valuable lessons for conservation efforts.
Researchers at Whitehead Institute created a 3D map of the human genome's DNA loops that regulate gene expression in human embryonic stem cells and adult cells. This new understanding will help scientists predict relationships between mutated elements and their target genes, leading to improved disease development insights.
A recent study published in Nature Communications reveals that TET protein loss of function leads to rapid development of malignant cancer. The research found that mice lacking both Tet2 and Tet3 developed aggressive myeloid leukemia, highlighting the importance of TET proteins in maintaining genome stability and preventing cancer.
MicroRNAs, specifically miR-125a, control endothelial cell proliferation and are increased in lung tissue of hypoxia-exposed animals. Inhibition of miR-125a increases expression of tumor suppressor genes, reducing cell proliferation.
A recent study published in Nature Genetics reveals that Short Tandem Repeats (STRs) regulate gene expression and modulate disease traits. STRs, previously thought to be neutral or 'junk' DNA, were found to act like springs or knobs that fine-tune nearby gene expression.
Cells use kinetic proofreading to regulate gene expression with increased specificity but at the cost of more energy investment. The authors propose an alternative out-of-equilibrium, proofreading-based transcriptional regulation to mitigate crosstalk in multicellular organisms.
A recent study from Karolinska Institutet shows that the human genome's 'grammar' is more complex than even intricate spoken languages. The findings contribute to understanding how genetic differences affect disease risk and pave the way for cracking the genetic code controlling gene expression.
Researchers have discovered a single gene regulating salmon age at maturity, which also influences human puberty timing. The VGLL3 gene affects body fat accumulation and balances out sex-specific traits to maintain population stability.
Researchers at LSU have identified a new gene regulation pathway that prevents inflammation and speeds up the skin's healing process. A nanoparticle-carried small interference RNA blocks the Nax sodium sensor, enabling faster healing.
Scientists have generated genome-scale sequence information for the fathead minnow, a commonly used model organism in environmental toxicology studies. The new data will enhance the understanding of complex traits and biological pathways affected by environmental toxins.
A new study finds that cells activate and deactivate proteins in a series of unpredictable pulses, allowing them to control gene expression. The timing of these pulses may play an important role in cellular processes such as information processing and stress response.
A study on dinosaur ants and red paper wasps found subtle, non-random arrangements of gene networks distinguish queens from workers, suggesting no single master gene regulates caste differentiation. The research also suggests that epigenetic modifications play a limited role in regulating these differences.
Researchers uncovered molecular mechanisms behind caste differentiation in insects, revealing subtle gene networks and lack of DNA methylation. The study used two species, dinosaur ants and red paper wasps, to gain insights into social evolution.
A study at Mount Sinai found that inhibiting a family of epigenetic brain proteins, known as BETs, can induce an autism-like syndrome in mice. This links environmental factors to gene transcription and may provide insights into the disease's pathology.
A genetic variant near the KLF14 gene regulates fat storage in women, affecting their risk of developing Type 2 diabetes. The variant influences hip circumference, with women carrying one allele tending to have larger hips than those with the other allele.
Researchers found that chromatin marks are irrelevant for regulating genes expressed in specific tissues during development. The study challenges current beliefs about epigenetics and offers new insights into gene expression.
Researchers have created a new method for controlling gene activation, allowing for precise regulation of gene expression in cells. The method employs CRISPR technology combined with chemical compounds to activate specific genes without altering the genome.
Researchers at Harvard and MIT have developed a new approach that allows for both genome editing and gene regulation to be achieved using the same Cas9 protein, opening up possibilities for understanding diseases and designing synthetic gene circuits. The method uses engineered guide RNAs to control gene expression.
Scientists from Karolinska Institutet have identified 32 genes that are switched on within two days of fertilization, marking a significant breakthrough in understanding early embryonic development. The study's findings also reveal the importance of 'junk DNA' in regulating gene expression.
A new policy analysis warns that current regulations are stifling the use of genetically engineered trees to combat catastrophic forest threats. The authors argue for a shift in regulatory approaches that focus on product rather than process, considering need, urgency, and genetic similarity.
Researchers have developed a strategy for genome-wide annotation of primary miRNA transcripts, providing extensive new annotations in human and mouse. This study sheds light on the mechanisms of regulation of microRNA gene expression, including novel regulatory mechanisms and alternative promoters.
Scientists at VIB and KU Leuven discovered polyglutamine repeats play a key role in functional development of cells. Excessive repeats cause neurodegenerative disorders, but moderate expansions may enable dynamic changes in cell physiology.
A new method, PrediXcan, uses transcriptome data to estimate gene expression levels and integrate with genome-wide association study (GWAS) data. This improves the detection of genes linked to complex diseases and biological traits.
Scientists at MD Anderson Cancer Center discovered the critical role of fumarase enzyme in DNA repair, revealing a key mechanism for reversing genetic damage leading to cancer and therapy resistance. The study's findings have potential implications for developing new cancer treatments by inhibiting DNA-PKs and fumarase.
Researchers have discovered that RNA-binding protein ROQUIN regulates the stability of thousands of mRNA molecules, including those involved in cellular inflammation and stress responses. By binding to these mRNAs, ROQUIN influences the activity of the key mediator NF-kappaB, which is essential for regulating gene expression.
The Genetics Society of America has awarded prizes to undergraduate and graduate students who presented research on Caenorhabditis elegans at the recent meeting. The awards recognized innovative work in various fields, including cell biology, development and evolution, gene regulation and genomics, neurobiology, and physiology.
Researchers have developed a novel control system to regulate therapeutic transgene expression by targeting the passenger strand of a specific microRNA. This approach achieves safe and specific regulation while sparing endogenous gene expression, offering potential for new gene therapy applications.