Articles tagged with Mrna Expression
Researchers have identified a crucial mechanism behind nonsense-mediated mRNA decay (NMD), which removes faulty transcripts to prevent incomplete protein production. The study reveals that the SMG5 and SMG6 proteins interact directly, forming an endonuclease that cuts through RNA in a targeted manner.
Researchers develop a new approach for treating inflammatory bowel diseases by delivering locked nucleic acids (LNAs) to the relevant organ using lipid nanoparticles. The study shows improvement in inflammation markers with no side effects, paving the way for potential treatments of rare genetic disorders and other diseases.
Researchers discovered a novel mechanism of intercellular communication through mRNA transfer between stem cells, allowing for biologically significant effects such as cell fate conversion and pluripotent state maintenance.
Researchers found a biomarker, RNA Polymerase II (RNAPII), associated with tumor aggressiveness and recurrence in meningioma and breast cancers. The study developed a novel profiling technology, Cleavage Under Targeted Accessible Chromatin (CUTAC), to measure gene transcription activity from DNA, which predicted cancer outcomes.
Researchers at Ohio State University found that certain tRNA introns suppress gene expression, helping cells respond to oxidative stress. The discovery sheds light on the potential importance of these previously thought-to-be-junk RNA segments in maintaining cellular evolutionary survival.
A new biodegradable polymer-based delivery system efficiently transports mRNA, outperforming existing lipid nanoparticles in delivery efficiency and expression duration. The study also shows improved immune response results without liver accumulation or toxicity.
Researchers discovered that RNA modifications enable fungi to evade drug treatment and become temporarily resistant. This finding could lead to better treatment options against fungal infections by targeting specific RNA modification mechanisms.
Researchers at Hokkaido University discovered that deep-sea hydrothermal vent bacteria can reduce nitrous oxide through an efficient energy metabolism mechanism. The study found that denitrification genes are negatively regulated by transcriptional regulators, suggesting a potential approach to mitigate climate change.
Researchers at Chung-Ang University have identified a crucial role for specific tRNA fragments in cancer progression, revealing their ability to regulate gene expression and influence tumor growth. The study suggests that these fragments could serve as biomarkers for early-stage cancer detection and targets for therapeutic interventions.
Researchers from NUS and A*STAR have discovered a connection between the regulation of alternative splicing in different cell types and the predisposition to autoimmune diseases. The study used a population-scale single-cell gene expression profiling dataset to analyze splicing events specific to particular cell types, revealing ancest...
Scientists at UChicago developed a new approach to study snoRNAs, uncovering thousands of previously unknown targets in human cells and mouse brain tissues. These discoveries suggest that snoRNAs may have a broader range of functions beyond guiding RNA modifications.
A team of researchers has identified a mechanism that interferes with the splicing process in a more subtle way, leading to cell death. The study reveals that spliceosome subunits U4, U5, and U6 are normally stabilized by protein USP39, but when mutated or absent, stability is compromised, causing incorrect connections during splicing.
A new RNA-based technology called StitchR facilitates effective use of gene therapy for difficult-to-treat, large-gene diseases like muscular dystrophies. It delivers two halves of a gene separately, resulting in seamless reconstitution of large mRNA in affected tissues.
Researchers at U of T have discovered that C2H2 zinc finger proteins, which primarily bind to DNA, also regulate RNA processing through various mechanisms. These proteins modify mRNA, controlling its length and altering it after transcription.
For the first time, researchers have demonstrated how mechanical forces affect gene expression by showing that RNAP polymerase remains on the DNA template and can be pulled to start a subsequent cycle of transcription. This force-directed recycling mechanism can change the relative abundance of adjacent genes.
Scientists from Spirovant Sciences describe a novel adeno-associated virus (AAV) gene therapy called SP-101 that has been optimized for efficient human airway cell transduction. After single dose inhaled delivery, the vector showed consistent expression of a functional and regulated shortened human CFTR minigene.
Researchers at Nagoya University have developed a method to chemically alter siRNAs, reducing off-target effects and improving the safety of siRNA drugs for genetic therapy. By modifying the seed region of siRNAs with formamide, they achieved suppression of off-target effects with higher efficiency than existing chemical modifications.
Researchers developed a treatment approach using lipid nanoparticles to deliver mRNA therapy for MSUD, extending survival and reducing serum leucine levels. The study also identified a novel AAV variant with desirable biodistribution properties for targeting peripheral organs.
A new zwitterionic polymer complex has been developed to deliver plasmid DNA into skeletal muscle, achieving widespread gene expression in mice. This breakthrough could lead to new therapies for serious muscular diseases.
Scientists improve stability and bioavailability of mRNA nanocarriers using triphenylphosphonium, leading to increased protein production in tumor tissues. The TPP-based system also shows higher mRNA levels in blood after 30 minutes compared to amine-based micelles.
A new study published in Nucleic Acid Therapeutics found that siRNA reduces huntingtin mRNA levels in the cytoplasm but not in the nucleus of mouse brains, suggesting a limitation in its effectiveness for treating Huntington's disease. The research highlights the importance of understanding the structure and function of nuclear RNA to ...
LNP-mRNA therapy faces challenges like targeting, quality control, and safety concerns. Researchers are optimizing dosage, addressing CMC requirements, and enhancing targeting efficiency to improve therapeutic outcomes.
Researchers at Arizona State University created a detailed map of the 3'UTR regions of RNA in C. elegans, revealing crucial elements for gene regulation and protein production. The study provides valuable insights into the machinery of gene control, shedding light on fundamental biological processes essential to human health and disease.
A research team from Göttingen University has discovered that antisense RNA (asRNA) plays a crucial role in cell transport, allowing cells to accelerate gene expression and produce proteins quickly in response to environmental stress or harm. This new understanding sheds light on the function of asRNAs and their potential link to disea...
Scientists have discovered that ADGRF5 helps maintain the integrity of the glomerular filtration barrier, which is critical for filtering waste from the blood. The study found that disrupting ADGRF5 expression led to abnormalities in the glomerular basement membrane and increased albuminuria.
Researchers found a significant reduction in serine racemase protein levels in the medial prefrontal cortex and hippocampal subfields of aged rats compared to young rats, suggesting a role in age-associated decline of NMDA receptor function. No sex differences were observed in serine racemase expression.
Researchers at the University of Alabama at Birmingham have discovered that the protein SRSF1 can bind and unfold complex RNA Guanine-quadruplexes. This finding could provide new avenues for treating illnesses such as cancer, which is often linked to misfunctioning splicing processes.
A team of researchers from Xi'an Jiaotong-Liverpool University has engineered a short sequence of artificial DNA to target the mutant protein p53-R175H, linked to lung, colorectal, and breast cancers. The new molecule, dp53m, inhibits cancer cell growth and increases sensitivity to chemotherapy agent cisplatin.
Researchers found that miR-377 reduces MYC mRNA levels, leading to increased Bax and PTEN expression and decreased CDK4. This results in induced apoptosis, inhibited proliferation, and arrested cell cycle in prostate cancer cells.
Researchers investigated molecular changes in aging mouse sweat glands, finding 171 mRNAs enriched in secretory cells. Altered mRNA and protein abundance were associated with age-related declines in sweat gland function.
Researchers developed a method to quantify mRNA transcription and degradation rates within individual cell types, uncovering varied regulatory rates across genes. The study provides novel insights into how pluripotent cells adopt specialized identities through gene expression.
Researchers at the University of Chicago show that a drug molecule targeting RNA modifications associated with neuroblastoma suppresses tumor growth in mice. High levels of METTL3 expression were linked to significantly lower survival rates in patients, suggesting it drives tumor growth.
Researchers used a novel deep proteomics approach to investigate the effects of aging and resistance training on skeletal muscle. The study found that aging predominantly affects non-contractile proteins, while resistance training has minimal effects on protein abundance.
Researchers identified elevated MALAT1 levels in various blood cancers, correlating with adverse outcomes. MALAT1 promotes cancer cell proliferation, migration, invasion, and metastasis through multiple mechanisms.
Researchers at Weill Cornell Medicine have assembled a comprehensive atlas of messenger RNA variants in the mouse and human brain, revealing intricate patterns of gene expression and its relationship to major brain disorders. The study provides valuable insights into brain development, neuron specialization, and disease mechanisms.
Scientists discovered that tiny brain bubbles called small extracellular vesicles carry more complete instructions for altering cellular function than previously thought. Researchers found nearly 80% of identified mRNAs were full-length, allowing them to be transcribed by recipient cells into viable proteins.
Researchers found that T cells can reshape their memory and maintain diversity against COVID-19 variants in response to successive mRNA vaccinations. The study revealed a shift among clonotypes, with a change from early responders to main responders after the second shot, suggesting a new dominant population of effector-memory T cells.
Researchers discovered that a single amino acid change between RNA helicases UAP56 and URH49 leads to the formation of functionally unique protein complexes. These complexes, apo-AREX and ATP-TREX, play crucial roles in regulating mRNA export and may be involved in cancer development.
Johns Hopkins researchers have made progress toward developing a blood test to identify disease-associated changes in the brain linked to postpartum depression and other psychiatric disorders. They identified 26 placental mRNAs present in maternal blood only during pregnancy, which reflected changes occurring inside the tissues.
Researchers from Tokyo University of Science identify Cpeb4 protein's crucial role in mRNA splicing and osteoclast differentiation, shedding light on bone disease mechanisms. The study's findings may lead to new diagnostic techniques and treatments for conditions like osteoporosis.
A team of researchers at the University of Cologne has discovered a protein complex called C/EBP heterodimer that directs cells towards a dormant state in response to faulty gene expression. This mechanism, known as cellular senescence, can protect tissues from damage but also promote disease and ageing.
A new study from NYU Grossman School of Medicine and University of Illinois Urbana-Champaign reveals a trick to understand how genes are turned on and off in bacteria, providing clues to combat antibiotic resistance. The researchers used single-cell sequencing and fluorescence hybridization techniques to track gene activity in real-time.
Researchers have found that antibody sequences contain an unusual number of codons without corresponding tRNAs, which can be bridged by the inosine wobble modification. This modification allows for more efficient production of antibodies, with implications for vaccine efficacy and rationally designed vaccines.
The study found that solely the omicron variant influences cell cycle genes, leading to increased p21 expression and a senescence-associated secretory phenotype. This results in premature cellular senescence, potentially contributing to the reported cytokine storm and development of long-COVID.
Researchers at TTUHSC are studying a new approach to inhibit STAT3, a protein associated with 70% of human tumors. Disrupting STAT3 synthesis on ribosomes could lead to new cancer treatments.
Researchers at the University of Toronto have discovered a novel ionizable lipid nanoparticle that enables efficient muscle-focused mRNA delivery while minimizing off-target effects. The study demonstrates potent cellular immune responses and potential as a viable candidate for cancer vaccine development.
Researchers at Goethe University Frankfurt have identified a specific gene locus, MYNRL15, that is critical to the survival and replication of leukemia cells. Inhibiting this gene has been shown to deactivate genes necessary for AML cell survival, offering a new possibility for fighting leukemia.
Researchers at Weill Cornell Medicine have discovered a new mechanism that makes some cancers treatment-resistant, involving the shuttling of messenger RNAs from the nucleus to the cytoplasm. The approach targets this mechanism with a combination of approved chemotherapies, showing promise in treating persistent cases.
Scientists designed an mRNA nanovaccine using machine learning to overcome delivery barriers, promoting strong immune responses and activating the STING pathway to kill tumor cells. The therapeutic strategy demonstrated stronger anti-tumor effects in melanoma and colorectal cancer models.
A new method, M3-seq, has been developed to study the gene expression patterns of individual bacteria with unprecedented detail. This approach enables researchers to identify rare bacterial populations and profile phage infection, shedding light on complex biological phenomena.
Researchers found a strong positive correlation between BRD4 overexpression and chemoresistance in ovarian cancer. The study demonstrated that BRD4-L and BRD4-S isoforms play a role in promoting chemotherapy resistance in high-grade serous ovarian carcinoma.
Researchers discovered a new mechanism underlying the heat shock response in Escherichia coli. IbpA suppresses σ32 translation, regulating Hsp expression and aiding cell protection under high temperatures. This finding sheds light on bacterial adaptation to harsh environments.
Researchers developed a new method to assess immune responses to specific antigens after mRNA SARS-CoV-2 vaccine administration, using B cell receptor repertoire analysis. This approach enables evaluation of post-vaccination responses in immunocompromised patients with high antibody titers.
CHOP and Penn Medicine researchers have developed a proof-of-concept model for delivering gene editing tools directly into diseased blood cells within the body. This approach aims to reduce costs and increase access to gene therapies for blood disorders, which currently require chemotherapy and stem cell transplants.
Researchers detected distinct RNA patterns in healthy and preeclampsia-affected pregnancies, identifying messenger RNA, microRNA, and long noncoding RNA as potential biomarkers. The study developed classifiers for predicting preterm and early-onset preeclampsia with high accuracy.
The study identifies 1,074 semi-extractable RNAs potentially involved in phase-separated membraneless organelles. These RNAs are enriched in repressed heterochromatin regions and act as hubs for RNA-RNA interactions.
Researchers developed a biodegradable nanoparticle that reaches dendritic cells in mice with melanoma and colon cancer, activating an immune response. The nanoparticle improves survival rates for these cancers, with half of mice surviving long-term after treatment.
Researchers at Georgia Institute of Technology have discovered a gene that drives the switch between chronic and acute P. aeruginosa infections. The gene encodes a small RNA called SicX, which plays a vital role in bacterial respiration under low oxygen conditions.
Researchers discovered differences in gene expression between Japanese mustard spinach cultivars with white rust resistance and susceptibility. The study identified distinct genes involved in protective responses and salicylic acid signaling in disease-resistant cultivars.
Researchers have identified distinct senescence subpopulations and dynamic changes in the transcriptome of human cells undergoing senescence. The study provides new understanding of the heterogeneous nature of senescence and its impact on aging diseases.