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Objectives: Polypyrimidine tract binding protein is a 57-Kda protein located in the perinucleolar compartment where it binds RNA and regulates several biological functions through the regulation of RNA splicing. Numerous research articles have been published that address the cellular network and functions of PTB and its isoforms in various disease states.
Methodology: Through an extensive PubMed search, we attempt to summarize the relevant research into this biomolecule.
Results: Besides its roles in embryonic development, neuronal cell growth, RNA metabolism, apoptosis, and hematopoiesis, PTB can affect cancer growth via several metabolic, proliferative, and structural mechanisms. PTB overexpression has been documented in several cancers where it plays a role as a novel prognostic factor.
Conclusion: The diverse carcinogenic effect opens an argument into its potential role in inhibitory targeted therapy.
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http://dx.doi.org/10.2174/0115665240251370231017053236 | DOI Listing |
J Neurochem
September 2025
State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
Orofacial neuropathic pain, a debilitating condition associated with trigeminal nerve injury, is often characterized by allodynia. N-methyl-d-aspartate receptors (NMDARs), particularly the GluN1 subunit, play a central role in mediating this pain. The GluN1 subunit undergoes alternative splicing at exon 5, generating isoforms GluN1a (lacking the exon 5-encoded N1 cassette) and GluN1b (retaining the N1 cassette), which have distinct functional roles.
View Article and Find Full Text PDFEmerg Microbes Infect
September 2025
Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan.
High pathogenicity avian influenza virus (HPAIV) poses major threats to both poultry health and public safety. The viral nonstructural protein 1 (NS1) plays a crucial role in counteracting innate immunity. NS1 typically consists of approximately 230 amino acids with two domains: an RNA-binding domain (RBD) and the effector domain (ED).
View Article and Find Full Text PDFBiochem Pharmacol
August 2025
Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning Province, PR China. Electronic address:
Glioblastoma (GBM) is the most aggressive type of primary intracranial tumor. Circular RNAs (circRNAs) are closely related to the malignant progression of GBM. Elevated levels of Circular RNA hsa_circ_0002346 (circCRIM1) significantly correlate with tumor growth, metastasis, and poor prognosis, suggesting its potential as a biomarker for cancer diagnosis and treatment response.
View Article and Find Full Text PDFNat Commun
August 2025
Department of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, Rome, Italy.
A growing body of evidence suggests that tissue-specific lncRNAs play pivotal roles in the heart. Here, we exploit the synteny between the mouse and human genomes to identify the human lncRNA HSCHARME and combine single-cell transcriptomics, CAGE-seq data, RNA-FISH imaging and CRISPR/Cas9 genome editing to document its role in cardiomyogenesis. By investigating the mechanism of action of HSCHARME in hiPSC-derived cardiomyocytes, we report that the locus produces the major pCHARME isoform that associates with SC35-containing speckles and interacts with the splicing regulator PTBP1.
View Article and Find Full Text PDFExp Lung Res
August 2025
Department of Pulmonary and Critical Care Medicine, the Second Hospital of Longyan, Longyan City, Fujian, China.
Background: Increased proliferation and migration of abnormal airway smooth muscle cells (ASMCs) are significantly associated with asthma. This study aimed to investigate the effects of methyltransferase-like 14 (), YTH domain-containing family Protein 1 (), and polypyrimidine tract-binding protein 1 () on platelet-derived growth factor-BB (PDGF-BB)-treated ASMCs.
Methods: ASMCs were treated with PDGF-BB to mimic cell remodeling.