Articles tagged with Histone Modification
The histone modification H3K4me3 is crucial for chromosome and spindle stabilization, normal oocyte development, and embryonic competence. Removing H3K4me3 leads to destabilized spindles, impaired embryonic development, and decreased fertility.
Researchers at Nara Institute of Science and Technology discovered five novel small molecules that can delay flowering in plants without heat treatment. These compounds, called devernalizers, reactivated the expression of a key gene suppressor of flowering, allowing for enhanced crop yield and resilience.
Researchers have identified a novel mechanism controlling circadian gene expression and behavioral rhythms through chemical bonding of monoamine neurotransmitters to histone proteins. This discovery could lead to targeted therapies for conditions involving circadian rhythm disruptions, such as insomnia and depression.
A new study finds that fine particulate air pollution (PM2.5) exposure is associated with altered immune responses and increased inflammation in pregnant women, leading to adverse birth outcomes. The study highlights the importance of minimizing air pollution exposure in pregnant women to protect maternal and fetal health.
Researchers identified key control sites regulating gene expression in cells, including those controlling ancient viral sequences. Mutating these sites caused defects in cell differentiation and survival, as well as spurious activation of genes across the genome.
A recent study by Nara Institute of Science and Technology reveals a new mechanism for dynamic gene silencing and reactivation, highlighting the intricate roles of proteins like SDG7. The research team identified a competitive interaction between SDGs and PRC2 at PREs, allowing for efficient gene activation through H3K36 methylation.
Scientists at Salk Institute discover a molecular mechanism that helps macrophages mount a coordinated response tailored to a specific immune challenge. The discovery reveals new immune system mechanisms that could be targeted with therapeutics to regulate inflammation.
A recent study by Helmholtz Munich scientists has made significant breakthroughs in understanding how epigenetic modifications work together to regulate the genome. The research sheds light on the complex interactions between DNA, histone proteins, and epigenetic reader proteins, providing new insights into diseases such as cancer, met...
Researchers identified a key chromatin modifier-centered pathway for grain size regulation in rice, showing that HHC4 and bZIP23 interact and enhance grain size. Phosphorylation of HHC4 by TGW3 triggers negative influences on the pathway, leading to increased rice yield.
Researchers discovered that PDS5A modifies DNA loops without affecting histone modifications, enabling the study of loop-mediated gene silencing. The loss of PDS5A disrupted genome organization, leading to aberrant gene activation and potentially driving diseases like cancer and developmental disorders.
Neuronal activity stimulates gene expression in human brain cells by influencing transcription factors and chromatin modifiers, particularly CREB and CBP. The interaction between CREB and DNA requires prior acetylation mediated by CBP to activate gene expression.
Researchers developed a new technique called MAbID to study multiple mechanisms of gene regulation simultaneously, enabling the connection between different gene expression processes. This technology can be applied to various fields, including human development and disease research.
A new MIT study proposes a theoretical model that helps explain how cells maintain the memory of their cell type despite losing chemical modifications during DNA replication. The research team suggests that the 3D folding pattern of the genome determines which parts will be marked by these chemical modifications.
Researchers have identified a new method to distinguish histidine methylation in histone proteins, revealing its role in regulating genomic DNA folding. The study found histidine methylation at specific residues in histones H2A and H3, primarily affecting lysine residues.
Researchers at the Swiss Cancer Center Léman have discovered a way to prolong the functionality of CAR-T cells, which are used against blood cancers. By inhibiting a specific metabolic mechanism, they created CAR-T cells with enhanced immune memory, capable of fighting tumour cells for longer.
Rice University chemist Han Xiao has won a $3.2 million research grant from the National Cancer Institute to develop an epigenetic inhibitor targeting bone metastasis. The drug, based on existing bisphosphonates, aims to prevent cancer cells from spreading to other organs without affecting normal tissues.
Researchers at St. Jude Children's Research Hospital discovered that the epigenetic landscape plays a crucial role in regulating pioneer transcription factor binding. By understanding this process, scientists can develop new therapeutics to combat cancer and other diseases. The study reveals how epigenetic modifications affect transcri...
Researchers from the ALFA Score Consortium explore how nutrition and physical exercise can positively impact the aging process by modifying epigenetic changes. They find that healthy aging is associated with more tightly condensed chromatin, fewer histone post-translational modifications, and greater regulation by non-coding RNAs.
The study reveals that SETD1A overexpression is associated with poorer disease-free survival in pancreatic cancer patients. Artificially cultured cells showed increased cell growth and migration when SETD1A levels were overexpressed, while knocking down SETD1A expression led to decreased RUVBL1 gene expression.
Researchers found global redistribution of histone H3 modifications with time, particularly in intergenic regions and near transcription start sites. Caloric restriction diet feeding reduced the extent of changes occurring during the first year of life in these genomic regions.
Researchers have identified the Xist gene as a critical regulator of fetal development in mice, leading to miscarriage and abnormal placentas when epigenetic instructions are missing. The study's findings suggest that failed Xist imprinting can be 'cured' by targeting specific genes involved in histone modifications.
Researchers found a unique bivalent histone-mark switch specific to critical transcription factors that induce genes essential for angiogenesis. The histone modifiers responsible for this modification are vital for postnatal angiogenesis.
Researchers developed a technique that can examine how different versions of histones bind to DNA in tens of thousands of individual cells simultaneously. This allows for the study of epigenetics at a single-cell level in complex tissues like the brain.
Researchers at Tokyo Institute of Technology create kinetic model to study site-specific histone modifications and their impact on chromatin accessibility. The model shows that acetylation increases chromatin accessibility threefold, highlighting the potential for accurate quantification of epigenetic effects.
Researchers found that changing the balance of histone modifications at bivalent promoters has profound effects on gene activity, leading to changes in genome architecture. The study sheds light on the earliest points in development when cells make quick decisions about their fate.
Experiments with yeast and worms found that incorrect gene expression is a hallmark of aged cells. Reducing such noise extends lifespan in these organisms, with a 30% increase in some strains. Researchers are now investigating the potential for this longevity pathway to be applied to mammalian cells.
Research on the Florida carpenter ant reveals that epigenetic regulation plays a key role in distinguishing two worker castes with strikingly different behaviors and physical characteristics. Histone modifications, including those influenced by the CBP regulator, are found to correlate with gene expression levels and cognitive abilities.
Researchers develop test system to investigate histone modification function and its influence on gene expression and cellular division. The study reveals a complex interplay between histone modifications and the genetic code.
Researchers mapped histone modifications in fat cells to identify two transcription factors SRF and PLZF involved in fat cell development. The study provides a roadmap for understanding normal fat cell development and has potential implications for metabolic diseases such as obesity and Type 2 diabetes.
A study by UCLA's Jonsson Comprehensive Cancer Center found that specific histone modifications can predict prognosis and response to treatment in pancreatic cancer patients. The findings suggest that low levels of these modifications are associated with poor survival, while high levels may indicate a favorable response to chemotherapy.
Studies show that histone modifications activated genes involved in cocaine response, leading to neural and behavioral plasticity. Long-lived changes in chromatin remodeling may be crucial for cocaine-induced neuroadaptations.