Articles tagged with Gene Regulation
Research published in BMC Neuroscience found that genetic genes controlling the body clock also regulate the need for sleep, linking sleep to energy metabolism. The study used mice with different genetic make-ups to explore this connection, revealing changes in gene expression associated with sleep deprivation and recovery.
The study reveals that f and m type plant thioredoxins are not only localized to chloroplasts but also found in nonphotosynthetic tissues such as stems, leaves, roots, and flowers. These findings suggest new roles for these proteins in cell division, germination, and plant reproduction.
A virtual bazaar called PAZAR has been established to share gene regulation data, allowing researchers to access information without charge. This open-access database aggregates data on transcription factor and regulatory sequences, enabling the development of novel cancer therapies and stem cell treatments.
A Yale University study found that structural changes to the human genome, including missing or rearranged segments, contribute to individual differences. These variations were identified using Paired-End Mapping and rapid sequencing methods.
A new study reveals that genetic variation in regions controlling gene activity is a significant contributor to common diseases. The researchers analyzed the activity of almost 14,000 genes and found over 1300 genes affected by DNA sequence changes in regulatory regions.
Researchers at the University of Alberta have found a new cause of blindness linked to a gene that regulates pH levels in the retina. The study suggests that targeting this process could lead to potential treatments for previously unknown causes of blindness, including hereditary vitreoretinal degenerations.
The study used knockout mice to test the hypothesis that ultraconserved elements are vital for life, but surprisingly found that mice lacking these elements were viable and fertile. The results suggest that the presence of ultraconserved elements is not required for organism viability.
The Conaway Lab has discovered a critical role for the chromatin remodeling complex INO80 in activating transcription mediated by the transcription factor YY1. This finding provides new insights into how YY1 regulates gene expression, which is crucial for cell cycle control and may have implications for cancer therapy.
Researchers compared gene expression in the frontal cortex of cirrhotic and non-cirrhotic alcoholics, finding widespread effects on cellular pathways related to cirrhosis. This suggests that heavy drinking can cause more brain damage in individuals with liver scarring.
A University of Toronto-led study found that alternative splicing is more highly regulated in nervous system tissues, allowing for specific functions in memory and learning. This new understanding of gene regulation has significant implications for human diseases such as cancers.
New research from Duke University reveals that the way genes are used in humans differs significantly from that of chimps and other primates. The study found dramatic differences in gene regulation related to brain development and diet, which may have contributed to human adaptability and susceptibility to certain diseases.
Yale researchers found that gene regulation plays a crucial role in shaping differences between species. By mapping DNA binding sites and analyzing regulatory regions, they discovered functional differences in yeast species, shedding light on the balance between gene content and regulation.
Researchers identified distinct genetic factors for blood pressure regulation in males and females, shedding light on gender-based disparities in cardiovascular health. The study's findings suggest that genetic diagnostic and therapeutic indices for hypertension must consider gender differences.
Researchers at Virginia Commonwealth University identified two key proteins, KLF2 and EKLF, that regulate overlapping groups of genes during red blood cell development. The study may lead to future gene therapies for sickle cell anemia and beta-thalassemia.
Researchers found that green tea slowed skin cell growth and regulated genes involved in skin cell life cycles, potentially treating psoriasis and dandruff. However, more human studies are needed to determine the full effects of this treatment.
A team of researchers at Rice University studied the gene LMO4 in zebrafish, discovering its role in regulating brain growth and development. They found that overexpression of the gene led to shrinkage of brain areas, while underexpression caused their enlargement.
Aging hematopoietic stem cells decline in function due to increased inflammatory response and decreased chromatin remodeling, leading to epigenetic dysregulation. Despite this decline, overall blood production remains stable.
A team of Canadian scientists has identified 1,155 genes under the control of Oct4, a master regulator of the stem cell state. These genes help maintain stem cells in a flexible state by controlling DNA packaging, cell division, and signaling pathways.
Researchers at University of Utah have developed a faster and less expensive technique for mutating vast, non-gene stretches of DNA. This new approach enables the evaluation of regulatory sequences that control gene expression, potentially leading to breakthroughs in human disease research.
A comprehensive analysis of the human genome has shown that a significant portion of the genome is actively transcribed and copied into RNA, relaying information to cellular machinery. The study identified new regions of gene regulation and altered our understanding of how genes are controlled.
Almac Diagnostics plans to develop and clear its In Vitro Diagnostic for colorectal cancer using the 510(k) approach, accelerating regulatory submission. The company's prognostic gene signature was developed from FFPE samples and aims to help clinicians determine cancer recurrence risk in stage II CRC patients.
Studies found that small pieces of genetic material known as miRNAs are more likely to be located near genes affecting cancer susceptibility. This discovery could lead to new insights into cancer risk and potentially inform the development of targeted therapies.
Researchers found that transcription factors bind to different sites in human and mouse liver cells, suggesting distinct regulatory mechanisms. This discovery could help identify patterns in gene expression and provide guidance for researchers using mice to understand human biology.
A study by University of Virginia researchers found that mice lacking the Nocturnin gene were resistant to weight gain on a high-fat diet and had normal liver fat levels. This discovery may lead to new treatments for inhibiting obesity and its effects on health.
Richard Lifton was honored with the prestigious Alfred Newton Richards Award at the WCN 2007, recognized for his outstanding basic research in nephrology. His work has significantly advanced our understanding of the molecular and genetic basis of renal and cardiovascular disease.
A study of 108 individuals with a HNF4A mutation found an average increase in birthweight of 790g, with over half of the babies classified as macrosomic. Low blood-sugar levels at birth were also more common in these infants.
Researchers have mapped nucleosome structures on a genome-wide scale, revealing an intimate relationship between DNA sequences and gene regulation. The study pinpointed critical gateways for transcription, showing how nucleosomes control gene function across the entire genome.
Researchers identified a candidate gene called DARC that may underlie differences in bone density between African-Americans and Caucasians. The study found that the DARC gene negatively regulates bone density in mice, and inhibiting its function could lead to therapies for osteoporosis.
Neurobiologists have found that DNA methylation is necessary for forming memories and regulates the activity of genes involved in memory formation. The study suggests that epigenetic regulation has a significant impact on behavioral changes brought about by environmental stimuli.
Two studies published in The Plant Cell reveal the role of NAC transcription factors NST1 and NST3 in regulating secondary wall thickening in woody tissues of Arabidopsis. These genes are found to be redundantly involved in promoting secondary wall formation, with one gene compensating for the loss of function of the other.
Frank Slack studies genetic switches controlling development and aging, while Sandra Wolin investigates RNA damage contributing to senescence and neurodegenerative diseases. Both researchers aim to improve understanding of aging processes.
Researchers from the Whitehead Institute have discovered that a specific microRNA helps prevent tumor formation by regulating the Hmga2 gene. In mice with compromised immune systems, cells expressing Hmga2 with disrupted let-7 sites developed tumors, highlighting a new mechanism for cancer formation.
Researchers found that the genetic code is nearly optimal for encoding signals of any length in parallel to sequences coding for proteins. The code is also organized efficiently, halting protein synthesis when necessary to conserve energy and resources.
Researchers at University College London have discovered the structure and function of a crucial gene regulating blood pressure. The study reveals that loss of activity in this gene leads to reduced nitric oxide production, a key player in cardiovascular health.
Scientists have developed a powerful method for charting nucleosome positions in the human genome, which could help uncover clues for cancer and other diseases. The technique successfully pinpointed the location of nucleosomes in thousands of promoter regions across seven human cell lines.
Scientists at Thomas Jefferson University have identified a new mechanism for controlling gene expression in fruit flies, involving non-coding RNAs that regulate HOX genes. This discovery could lead to improved understanding of diseases like ALL and its connection to misregulated HOX genes.
University of Wisconsin-Madison researchers discovered novel functions of the Sen1 protein, which acts as a master regulatory switch in yeast. This discovery may help understand human neurodegenerative diseases like ALS and movement disorders.
Gene-bending proteins recognize and bind tightly to bent DNA conformation, suggesting DNA plays a role in guiding correct bending protein to site on DNA. This finding challenges the conventional dogma that it is the protein that bends the DNA.
Researchers used fruit flies to study the genetic basis of species differences, finding that small changes in control regions of genes can result in morphological differences and potentially even the creation of a new species. The study highlights the importance of regulatory sequences in gene evolution.
Researchers at St. Jude Children's Research Hospital have identified the Six3 gene as a critical regulator of lens development in mammalian embryos. The study shows that Six3 activation of the Pax6 gene is essential for the formation of the lens, and its absence leads to lens formation failure.
Researchers found that a specific gene variation is associated with lower pain sensitivity and reduced risk of chronic pain. The study suggests that individuals with this genetic marker may be less sensitive to pain and have a lower risk of developing neuropathic pain.
Researchers discovered that the cell cycle's temporal regulation evolves rapidly, with changes occurring every 100 million years. This fast evolution is unexpected for a fundamental process like cell division.
Using multiphoton fluorescence microscopy, researchers have watched chromosomes change their form to activate genes in living fruit fly cells. This discovery could significantly advance our understanding of the basic processes underlying gene expression.
Researchers at The Wistar Institute have determined the three-dimensional structure of a key two-molecule complex involved in long-term gene storage, primarily in non-growing cells. This discovery provides important insights into how cells protect genes that could trigger cancers and other disorders.
A new genetic component of heart disease has been identified, with the ILK protein found to play a critical role in regulating cardiac contractility. Loss of ILK in heart cells results in cardiomyopathy and heart failure, highlighting the importance of this molecule in vital physiological processes.
University of Utah scientists reverse evolution by reconstructing a 530-million-year-old gene from two modern mouse genes. By combining key portions of Hoxa1 and Hoxb1, they effectively recreated a gene with the function that the original Hox1 performed more than 530 million years ago.
Researchers analyzed the mechanism controlling body size in Manduca sexta and found that it is influenced by genetic and environmental factors. The study suggests that a balance between growth rate and developmental time determines optimal body size.
Drosha activity plays a fundamental regulatory step in microRNA processing. Blocking this enzyme can suppress miRNA production in cancer cells. This discovery may lead to novel therapeutic strategies for treating cancer by understanding the molecular events of carcinogenesis.
Researchers have determined the life cycle of operons, small groups of genes with related functions co-transcribed in a single strand of messenger RNA. The findings reveal that operon creation and destruction lead to large changes in gene expression patterns, suggesting adaptation to environmental stresses.
Bioengineering researchers found that cells use pairs, trios, and combinations of up to 13 transcription factors to regulate distinct sets of genes. The study predicts 980 as-yet-undiscovered transcription factor-gene binding interactions.
Research using sleepy fruit flies discovered that specific regions of the brain, known as mushroom bodies, regulate sleep. Increasing serotonin activity in these regions promotes sleep, which may help with learning and memory consolidation.
Cross-species DNA sequence comparisons can accurately identify human regulatory DNA sequences when comparing closely related species. The study used a uniform approach to assess the impact of evolutionary distance, finding sensitivity improved by 53-80% and true-positive rates ranging from 53-67%.
Dr. Hammarskjold's team reveals WT1(+KTS) promotes translation by facilitating mRNA transport and stability, highlighting links between transcription and post-transcriptional gene regulation. The study's findings suggest a crucial role for alternative splicing in regulating genes like WT1 during normal development and disease.
Plant biologist Jian Kang Zhu discovered that the high expression of osmotically responsive gene 1 (HOS1) acts as a biochemical gate to cut off the plant's cold protection. The HOS1 protein interacts with ICE1, kicking off a genetic cascade that provides cold protection proteins.
A new study by Harvard Medical School researchers found that visual stimulus turns up the expression of some genes and turns down others, shaping the brain. The study identified distinct sets of genes that respond to visual input at different ages, suggesting a more holistic view of gene function in neural development.
Researchers at Cold Spring Harbor Laboratory have identified a gene that promotes both disease resistance and pollen development in rice. The xa13 allele, found to be resistant to bacterial leaf blight, has a surprising positive effect on plant fertility.
Scientists have found that the same DNA sequence is present in both humans and an ancient fish thought to be extinct for millions of years, indicating that mobile DNA elements can be adapted to regulate genes. This discovery suggests that mobile DNA may play a role in evolution's toolbox.
Researchers studied gene regulation in fruit flies and beetles, finding that some genes are necessary for both species to make segments. The findings will help better understand the basic process of segmentation and its genetic regulation.
Dr. Varshavsky's pioneering studies revealed ubiquitin's diverse roles in cell cycle, DNA repair, and responses to stress, advancing the field of molecular genetics. The March of Dimes Prize acknowledges his significant contributions to understanding birth defects, neurodegenerative syndromes, cancer, and immune disorders.
Researchers discovered a new therapeutic target for hepatitis C using microRNA-122. The study found that miR-122 binds to a specific region of the virus, suggesting a potential approach for inhibiting viral replication.