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Host RNA-Binding Proteins as Regulators of HIV-1 Replication.
Viruses
December 2024
Laboratory of Molecular and Cellular Virology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile.
RNA-binding proteins (RBPs) are cellular factors involved in every step of RNA metabolism. During HIV-1 infection, these proteins are key players in the fine-tuning of viral and host cellular and molecular pathways, including (but not limited to) viral entry, transcription, splicing, RNA modification, translation, decay, assembly, and packaging, as well as the modulation of the antiviral response. Targeted studies have been of paramount importance in identifying and understanding the role of RNA-binding proteins that bind to HIV-1 RNAs.
View Article and Find Full Text PDFThe Protective Effect of Nimodipine in Schwann Cells Is Related to the Upregulation of LMO4 and SERCA3 Accompanied by the Fine-Tuning of Intracellular Calcium Levels.
Int J Mol Sci
January 2025
Department of Neurosurgery, Medical Faculty, Martin Luther University Halle-Wittenberg, Ernst-Grube-Straße 40, 06120 Halle (Saale), Germany.
Nimodipine is the current gold standard in the treatment of subarachnoid hemorrhage, as it is the only known calcium channel blocker that has been proven to improve neurological outcomes. In addition, nimodipine exhibits neuroprotective properties in vitro under various stress conditions. Furthermore, clinical studies have demonstrated a neuroprotective effect of nimodipine after vestibular schwannoma surgery.
View Article and Find Full Text PDFThe Role of Individual Residues in the N-Terminus of Arrestin-1 in Rhodopsin Binding.
Int J Mol Sci
January 2025
Department of Pharmacology, Vanderbilt University, Nashville, TN 37232, USA.
Sequences and three-dimensional structures of the four vertebrate arrestins are very similar, yet in sharp contrast to other subtypes, arrestin-1 demonstrates exquisite selectivity for the active phosphorylated form of its cognate receptor, rhodopsin. The N-terminus participates in receptor binding and serves as the anchor of the C-terminus, the release of which facilitates arrestin transition into a receptor-binding state. We tested the effects of substitutions of fourteen residues in the N-terminus of arrestin-1 on the binding to phosphorylated and unphosphorylated light-activated rhodopsin of wild-type protein and its enhanced mutant with C-terminal deletion that demonstrates higher binding to both functional forms of rhodopsin.
View Article and Find Full Text PDFDecoding Codon Bias: The Role of tRNA Modifications in Tissue-Specific Translation.
Int J Mol Sci
January 2025
Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Medicine, Tohoku University, Sendai 980-8575, Japan.
The tRNA epitranscriptome has been recognized as an important player in mRNA translation regulation. Our knowledge of the role of the tRNA epitranscriptome in fine-tuning translation via codon decoding at tissue or cell levels remains incomplete. We analyzed tRNA expression and modifications as well as codon optimality across seven mouse tissues.
View Article and Find Full Text PDFSilencing superoxide dismutases (SOD1&SOD2) potentiates ROS-induced apoptosis in chordoma cells.
Mol Biol Rep
January 2025
Department of Medical Genetics, School of Medicine, Yeditepe University, İstanbul, 34755, Turkey.
Background: Chordoma, characterized as a slow growing yet locally invasive and destructive bone tumor mainly emerging in the sacrum and clivus, presents a unique challenge due to its rarity, hampering the development of effective treatment strategies. Comprehensive understanding of tumor biology is crucial to suggest novel treatment modalities. Reactive oxygen species (ROS), a family of chemically reactive and unstable oxygen derivatives, are controlled by an intracellular antioxidant system to maintain homeostasis.
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