This site uses cookies to improve your experience. To help us insure we adhere to various privacy regulations, please select your country/region of residence. If you do not select a country, we will assume you are from the United States. Select your Cookie Settings or view our Privacy Policy and Terms of Use.
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Used for the proper function of the website
Used for monitoring website traffic and interactions
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Strictly Necessary: Used for the proper function of the website
Performance/Analytics: Used for monitoring website traffic and interactions
A research team has discovered that cancer, one of the leading causes of death worldwide, can be caused entirely by epigenetic changes, in other words, changes that contribute to how gene expression is regulated, and partly explain why, despite an identical genome, an individual develops very different cells (neurons, skin cells, etc.).
A newly discovered code within DNA -- coined 'spatial grammar' -- holds a key to understanding how gene activity is encoded in the human genome. This breakthrough finding revealed a long-postulated hidden spatial grammar embedded in DNA.
We deciphered a compensatory biochemical feedback cycle where FA-dependent SAM deficiency led to an increase in MAT1A expression through genetic and epigenetic mechanisms regulated by FA-dependent transcription factors and DNA promoter hypomethylation, respectively.
Nuclear DNA influences variation in mitochondrial DNA By Allessandra DiCorato August 16, 2023 Breadcrumb Home Nuclear DNA influences variation in mitochondrial DNA Whole genomes from hundreds of thousands of people reveal new complexity in how the nuclear and mitochondrial genomes interact, which may influence how cells produce energy.
For the first time, scientists at UCL and University Medical Center Utrecht have observed bowel cancer cells’ ability to regulate their growth using a genetic on-off switch to increase their likelihood of survival. While this unrestrained mutation rate kills many cancer cells, it also produces a few ‘winners’ that fuel tumour development.”
2023.11.008 The TRF2 shelterin component is an essential regulator of telomere homeostasis and genomic stability. Mutations in the TRF2TRFH domain physically impair t-loop formation and prevent the recruitment of several factors that promote efficient telomere replication, causing telomeric DNA damage.
The tools developed function entirely post-translationally, enabling synergistic strategies with engineerable regulation across multiple levels of the central dogma. The tools developed function entirely post-translationally, enabling synergistic strategies with engineerable regulation across multiple levels of the central dogma.
Merkin Prize in Biomedical Technology for developing an efficient, automated technology for synthesizing DNA. The chemical reactions that he discovered in the early 1980s to accurately and quickly assemble nucleotides into strands of DNA provided an essential element in the development of modern molecular medicine.
As described in our previous Origin of Replication post, DNA replication is initiated at the ori and may or may not be synchronized with the replication of the host cell's chromosomal DNA. All plasmids rely on their host cell's replication machinery in order to replicate—but not always to the same extent.
Using covalent scout fragments, KB02 and KB05, we identified ligandable cysteines on proteins involved in spindle assembly, DNA repair, and transcriptional regulation, such as Cys101 of histone acetyltransferase 1 (HAT1). TurboID (His-TID) construct, with chemoproteomics.
3c12240 Caspases are a highly conserved family of cysteine-aspartyl proteases known for their essential roles in regulating apoptosis, inflammation, cell differentiation, and proliferation. Backus Journal of the American Chemical Society 2024 DOI: 10.1021/jacs.3c12240
The blueprint for human life lies within the DNA in the nucleus of each of our cells. DNA condensation is not random. In human cells, around six and a half feet of this genetic material must be condensed to fit inside the nucleus. To function properly, the genetic material is highly organized into loop structures […]
A surprising new role for a major immune regulator By Tom Ulrich August 7, 2023 Breadcrumb Home A surprising new role for a major immune regulator By Anne Trafton, MIT News August 7, 2023 Credit: RCSB Protein Data Bank A model of the human STING protein.
This receptor, referred to as retinoic acid receptor alpha (RARα), is recognised for its regulation of gene expression within the nucleus. The cell’s nucleus, containing compacted DNA, is centrally positioned within the cell.
Standard of care GBM therapies include radiation and cytotoxic chemotherapy that lead to DNA damage. Subsequent activation of DNA damage response (DDR) pathways can induce resistance. Elimusertib, a novel ATR kinase inhibitor, can prevent repair of damaged DNA, increasing efficacy of DNA damaging cytotoxic therapies.
The reasons for this are multifaceted, including concerns over the safety of directly altering DNA sequences and subsequent regulatory restrictions that have arisen as a result. The epigenome (meaning ‘above the genome’) is a system of reversible marks regulating how the DNA is read, translated and used.
That is in part because of the ongoing challenge of understanding the DNA switches, called cis-regulatory elements (CREs), that control the expression and repression of genes. CREs themselves are not part of genes, but are separate, regulatory DNA sequences – often located near the genes they control. In a paper published in Oct.
DNA topoisomerase IIβ (TOP2β/180; 180 kDa) is a nuclear enzyme that regulatesDNA topology by generation of short-lived DNA double-strand breaks primarily during transcription. TOP2β/180 can be a target for DNA damage-stabilizing anticancer drugs, whose efficacy is often limited by chemoresistance.
The new method uses a combination of prime editing, which can directly make a wide range of edits up to about 100 or 200 base pairs, and newly developed recombinase enzymes that efficiently insert large pieces of DNA thousands of base pairs in length at specific sites in the genome.
They identified ZNF800 as a key regulator of the differentiation of a specific gut cell type, the enteroendocrine cells. These hormones regulate digestive processes, like nutrient absorption, appetite, and glucose metabolism. The study was published in Science.
STING is primarily on the lookout for DNA, which can indicate either a foreign invader such as a virus or damage to the […] CAMBRIDGE, MA — A signaling protein known as STING is a critical player in the human immune system, detecting signs of danger within cells and then activating a variety of defense mechanisms.
Abstract Proliferating cell nuclear antigen (PCNA) is a homo-trimeric protein complex that clamps around DNA to tether DNA polymerases to the template during replication and serves as a hub for many other interacting proteins. This is the proof-of concept for a novel T. brucei
Credit: Jane Ades, National Human Genome Research Institute, NIH Type 2 diabetes (T2D) tends to run in families, and over the last five years the application of genomic technologies has led to discovery of more than 60 specific DNA variants that contribute to risk. Nat Rev Drug Discov. 2013 Aug;12(8):581-94. [3]
The instructions to form a cell are encoded in DNA strands, wrapped in proteins and RNA, and wound together into a 3D structure called chromatin. Another finding was that regulatory T cells had distinct chromatin architecture features called DNA loops. This indicated other Foxp3 protein-containing complexes may be involved.
This process is regulated so we end up with the right number of neurons, which we can imagine with some simplified math: If you start with one progenitor and need eight neurons, it isn’t efficient for that progenitor to make a single neuron eight times.
Multiple investigations prove that it is regulated genetically, and epigenetically, and is affected by environmental factors. The molecular and neural pathways linked to the regulation of schizophrenia have been extensively studied.
Related links Merkin Prize Inaugural Merkin Prize in Biomedical Technology awarded to Dr. Marvin Caruthers for developing technology that efficiently synthesizes DNA The inaugural Richard N. Caruthers was announced as the winner in June for his development, in 1981, of an efficient, automated technology for synthesizing DNA.
Radiation therapy, a standard treatment option for many cancer patients, induces DNA double strand breaks (DSBs), leading to cell death. Ataxia telangiectasia mutated (ATM) kinase is a key regulator of DSB repair, and ATM inhibitors are being explored as radiosensitizers for various tumors, including primary and metastatic brain tumors.
In three new studies, researchers including a team from the Broad Institute of MIT and Harvard have harmonized and analyzed data on proteins, DNA, RNA, as well as clinical data from more than 1,000 patients across nearly a dozen different cancer types. They then characterized 33 molecular signatures to group biologically similar tumors.
Biochemical kits was utilized for checking the ATP, mitochondrial DNA, MDA, GSH, and Fe 2+ levels in the Huh7 cells, and western blot for measuring the ferroptosis and AMPK/mTOR related-protein expression levels. SchA also induced apoptosis in a dose-dependent manner.
Sarepta is no stranger to controversy, following the decision of the US regulator to approve the company’s earlier product, eteplirsen, which induces exon-skipping to improve expression of dystrophin protein in individuals who carry the mutant gene, as Exondys 51 back in 2016.
Regulators traditionally want to see a single, stable, well-characterized drug before giving the green light for it to be tested in a clinical trial, not dozens of different viruses; let alone ones that are best found in unappealing places like sewage , hospital waste, or bird poop.
The NOD-like receptor pyrin domain-containing protein 3 (NLRP3) inflammasome is a central regulator of innate immunity, essential for processing and release of interleukin-1β and pyroptotic cell death. Mice also contain plasma esterase (Ces1c) activity which is absent in humans.
Researchers from Tokyo Tech’s World Research Hub Initiative conducted a study to investigate the regulation of gene expression in the apicoplast of the malaria parasite Plasmodium falciparum. How is melatonin, the circadian signalling hormone, related to the regulation of gene expression in the apicoplast?
Gene therapy research is exciting and full of promise, but because of the risks involved, it’s also highly regulated, requiring an institutional biosafety committee (IBC) to provide additional oversight and risk assessment. What do the Regulations Say about IBC Review?
Although non-coding variants have been increasingly appreciated for their essential role in controlling gene expression across cell types and tissues, scientists find it difficult to match them to the genes they regulate, the effects on AD-related functions and thus the individual risk of contracting AD.
The specific proteins found in these aggregates can vary, but approximately 95 percent of ALS patients and 50 percent of FTD patients develop aggregates containing the TDP-43 protein (short for tar DNA binding protein 43). 14 TDP-43 is a DNA and RNA binding protein that regulates the expression and splicing of several target transcripts.
DNA delivered to the nose or lungs can express an encoded protein for months to over a year in mice if the vector—the “backbone” of DNA-based medicines controlling the level and timing of expression of the encoded protein—is specifically engineered to be long-lasting.
However, they plod along as they clone plasmids—the loops of DNA that biologists use to manipulate and study organisms—because propagating them relies, in part, on the pace at which cells grow and divide. Most medicines, including insulin and semaglutide (the weight loss drug), are made using DNA cloning. However, E.
Past Speakers Speaker Topic Jeffery Kelly Pharmacological Adaptation of Proteostasis to Ameliorate Aging-associated Degenerative Diseases Chuan He RNA modification in gene expression regulation Richard Young Biomolecular condensates: new insights into regulation and dysregulation of cellular compartments David Liu Base Editing and Prime Editing: (..)
Collecting DNA methylation data by WGBS offers valuable insights into disease origin, predisposition, and treatment response, potentially guiding therapeutic strategies. Collecting DNA methylation data by WGBS offers valuable insights into disease origin, predisposition, and treatment response, potentially guiding therapeutic strategies.
5 Cytology-based profiling can facilitate antibiotic discovery efforts and, these assays assess cell cycle progression, nuclear and mitochondrial DNA content, mitochondrial DNA replication, nuclear DNA damage, mitochondrial membrane potential, and lysosome structure and function. 12(11): e0006980. Nilmar, S. and Anabela, C.
Scientists from the Centre for Genomic Regulation and the Wellcome Sanger Institute have found the allosteric control sites in the KRAS protein, the highly sought after targets for drug development. This study is the first complete control map for any protein. One of the most commonly mutated genes in many types of cancer is KRAS.
We organize all of the trending information in your field so you don't have to. Join 15,000+ users and stay up to date on the latest articles your peers are reading.
You know about us, now we want to get to know you!
Let's personalize your content
Let's get even more personalized
We recognize your account from another site in our network, please click 'Send Email' below to continue with verifying your account and setting a password.
Let's personalize your content