Articles tagged with Polycomb Group Proteins
Researchers have discovered that plants have a built-in season-meter that integrates past temperatures over distinct timescales, allowing them to forecast seasonal changes. This system, comprising three genes, enables plants to prepare for winter, spring, or autumn, and could be extended to other genes and environmental signals.
A new study found that cells of the same chronological age can follow dramatically different biological aging paths. Tissues become a mosaic of biologically younger and older cells, with some individual cells aging much faster than others.
A new study by UNC Charlotte scientists has discovered a self-clustering mechanism in the Polycomb protein CBX2 that is essential for initiating gene-repressive condensates and guiding stem cells toward their proper fates. The researchers found that CBX2 clusters recruit two Polycomb repressive complexes, creating multicomponent repres...
A team of scientists has identified a novel DNA damage repair pathway in human cells, revealing that proteins present in the nuclear membrane directly interact with damaged DNA. This breakthrough could lead to the development of new cancer treatments that target this pathway and overcome treatment resistance.
Researchers discovered temperature influences plant cell fate by regulating epigenetic marks. Low ambient temperatures can rescue developmental defects by compensating for PRC2 loss, highlighting the importance of H3K27me3 in maintaining cellular identity.
Researchers have found that genetic mutations are not essential for cancer onset, and instead, epigenetic dysregulation plays a crucial role. Epigenetic changes can cause gene expression to be altered, leading to tumour formation even after the signal has been restored.
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.
Researchers at Trinity College Dublin have discovered a new process that explains why cells have unique identities. By studying Polycomb protein complexes, the team found that different forms of these proteins recruit distinct complexes to DNA, shedding light on cellular identity and its potential impact on cancer treatments.
Researchers from Northwestern University discuss the multifaceted tumorigenic functions of EZH2, including its role in regulating translation and coactivating transcription. This new understanding may provide novel insights into advancing EZH2-targeting strategies for prostate cancer patients.
Researchers identify PRC1 as key to establishing and maintaining ovarian reserve, providing insights into female reproductive health and lifespan. The study's findings may help explain premature ovarian failure and infertility in humans.
A study reveals an epigenetic switch that restricts early embryo cells from differentiating into certain tissue lineages. The research identifies PRC2 as a key regulator of gene expression in embryonic development, allowing for better control of stem cell specialization and blastoid formation.
Researchers discovered a novel neurological disorder caused by spontaneous mutations in the RNF2 gene, leading to symptoms such as intellectual disabilities, seizures, and feeding difficulties. The study, led by Dr. Shinya Yamamoto and Dr. Vandana Shashi, found that loss-of-function variants in RNF2 disrupt normal neuronal development ...
Researchers found that Polycomb repressive complex 1 (PRC1) and Polycomb repressive complex 2 (PRC2) maintain the skin-specific gene expression pattern necessary for proper development of the skin. The study suggests that targeting both complexes may be a more effective form of treatment for certain cancers.
Researchers have identified a new and evolutionarily conserved pathway responsible for silencing genes in mammalian cells. BAHCC1 protein is involved in the Polycomb pathway, which generates a chemical tag to silence genes, and its high expression is linked to leukemia, challenging current understanding of gene silencing.
Researchers at CNIO discover cohesin's new functions in pluripotency and genome architecture, shedding light on cancer development and rare diseases. Cohesin-SA2 regulates Polycomb domains, maintaining chromatin organization.
A new study has identified the PcG protein EED as a critical modulator of hippocampal development and function. The researchers found that EED is necessary for the proper formation of the dentate gyrus, a key region involved in learning and memory.
Research by Maria A. Blasco and colleagues reveals TERRAs interact with the Polycomb complex to assemble telomeric heterochromatin. In cells deficient for TERRA, telomeres show decreased heterochromatic marks, indicating a crucial role in telomere protection and maintenance.
A team from Trinity College Dublin discovered two new families of proteins, PALI1 and PALI2, that are vital for embryonic development and controlling cellular identity in complex animals. These proteins help understand why cells look and act differently despite having identical genes.
Researchers at the University of Pennsylvania have discovered a mechanism for regulating gene activity in plants by identifying small DNA sequences called Polycomb response elements (PREs) that direct the silencing of genes. These PREs can be manipulated using gene-editing techniques to alter gene expression without adding foreign gene...
Researchers discovered a Polycomb mechanism governing intestinal homeostasis, which is disrupted in coeliac disease and possibly in colorectal cancer. This study sheds light on the pathogenesis of intestinal damage in coeliac disease and provides diagnostic markers.
Researchers found that Jarid2, a component of the Polycomb repressive complex 2, occasionally activates gene expression in fruit fly embryos. This challenges the traditional view of Polycomb proteins as transcriptional repressors, suggesting a more complex role for PRC2 and its components in development and cancer.
Researchers at University College London have identified a new mechanism for how polycomb proteins repress the wrong genes in embryonic stem cells. The discovery has significant implications for tissue engineering and cell differentiation, as it reveals how polycomb proteins control gene activity through interaction with short RNAs.
Researchers at EMBL identified a new Polycomb group complex, PR-DUB, which surprisingly removes the same gene-silencing tag as another complex. This unexpected behavior may be a case of fine-tuning to maintain optimal levels of chemical tagging.
Researchers found that adding a sugar tag to nuclear proteins is vital for normal development in fruit flies, revealing a critical link between Ogt and Polycomb protein function.
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 found that Polycomb proteins repress developmental genes, while bivalent domains mark key genes with both repressive and activating characteristics. This helps explain embryonic stem cell stability and differentiation potential.
Researchers mapped dynamic Polycomb group protein PC and PH across various developmental stages in Drosophila. The study reveals the proteins' diverse binding locations, implying different gene silencing mechanisms. Further analysis is needed to understand their role in development and conservation across species.
Scientists discovered protein chromodomains that recognize and bind to specific histone modifications, enabling the regulation of gene expression. This breakthrough could lead to improved treatments for cancer by targeting epigenetic mechanisms.
Researchers have linked Polycomb gene silencing to histone protein methylation, explaining the permanence of Hox gene silencing. The study found that Polycomb proteins function through methylating a specific lysine residue on histone 3, leading to permanent gene silencing.