The study on the mechanism and kinetics of mRNA degradation provides a new vision for chemical intervention on protein expression. The AU enrichment element (ARE) in mRNA 3'-UTR can be recognized and bound by the ARE binding protein (AU-rich Element factor (AUF1) to recruit RNase for degradation. In the present study, we proposed a novel strategy for expression regulation that interferes with the AUF1-RNA binding. A small-molecule compound, JNJ-7706621, was found to bind AUF1 protein and inhibit mRNA degradation by screening the commercial compound library. We discovered that JNJ-7706621 could inhibit the expression of AUF1 targeted gene IL8, an essential pro-inflammatory factor, by interfering with the mRNA homeostatic state. These studies provide innovative drug design strategies to regulate mRNA homeostasis.
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http://dx.doi.org/10.3390/molecules27103182 | DOI Listing |
Alzheimers Dement
December 2024
Karolinska Institute, Stockholm, Södermanland and Uppland, Sweden.
Background: Novel anti-amyloid therapies (AAT) for Alzheimer's Disease (AD) have recently been approved in the United States, Japan and China, and are under regulatory review in Europe. Questions remain regarding the long-term effectiveness and value of these drugs when used in routine clinical practice. Data from follow-up studies will be important to inform their optimal use, including criteria for treatment initiation, monitoring strategies, stopping rules, pricing and reimbursement considerations.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
NYU Grossman School of Medicine, New York, NY, USA; NYU, New York City, NY, USA.
Background: Astrocytes, a major glial cell in the central nervous system (CNS), can become reactive in response to inflammation or injury, and release toxic factors that kill specific subtypes of neurons. Over the past several decades, many groups report that reactive astrocytes are present in the brains of patients with Alzheimer's disease, as well as several other neurodegenerative diseases. In addition, reactive astrocyte sub-types most associated with these diseases are now reported to be present during CNS cancers of several types.
View Article and Find Full Text PDFBackground: The hyperphosphorylation, mislocalization, and aggregation of the microtubule associated protein Tau (MAPT) is a driving force in tauopathies, a group of progressive, neurodegenerative disorders. These pathogenic intracellular aggregates, known as neurofibrillary tangles (NFTs), are a hallmark in several diseases such as frontotemporal dementia, progressive supranuclear palsy, and Alzheimer's Disease. While anti-Tau immunotherapies emphasize the clearance of extracellular Tau aggregates, they do not address the intracellular accumulation of NFTs.
View Article and Find Full Text PDFBackground: Progranulin (GRN) plays a critical role in familial frontotemporal dementia (fFTD), where GRN haploinsufficiency leads to reduction in PGRN levels in the brain, resulting in degeneration of neurons in the frontal lobe of brain responsible for personality, language, and behavior. FTD is the most common dementia in people under 60. Sortilin (Sort1), expressed by neurons, endocytoses, and delivers PGRN rapidly to lysosomes for degradation.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Department of Neurology, Mayo Clinic, Rochester, MN, USA.
Background: Alzheimer's disease (AD) is an age-dependent neurodegenerative disorder with limited treatment options. As it progresses, synapse degeneration is the most important feature contributing to cognitive dysfunction. Mitochondria supply synapses with ATP for neurotransmitter release and vesicle recycling and buffer calcium concentrations.
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