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A Wonderful Journey: The Diverse Roles of Adenosine Deaminase Action on RNA 1 (ADAR1) in Central Nervous System Diseases.
CNS Neurosci Ther
January 2025
Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi, China.
Background: Adenosine deaminase action on RNA 1 (ADAR1) can convert the adenosine in double-stranded RNA (dsRNA) molecules into inosine in a process known as A-to-I RNA editing. ADAR1 regulates gene expression output by interacting with RNA and other proteins; plays important roles in development, including growth; and is linked to innate immunity, tumors, and central nervous system (CNS) diseases.
Results: In recent years, the role of ADAR1 in tumors has been widely discussed, but its role in CNS diseases has not been reviewed.
IMPDH2 dephosphorylation under FGFR signaling promotes S-phase progression and tumor growth.
Cell Rep
December 2024
Department of Liver Surgery and Shanghai Cancer Institute, State Key Laboratory of Systems Medicine for Cancer, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai, China. Electronic address:
Inosine monophosphate dehydrogenase 2 (IMPDH2) is highly expressed in human cancers; however, its physiological relevance under growth signaling remains to be investigated. Here, we show that IMPDH2 serine 122 is phosphorylated by CDK1, and this modification attenuates the catalytic activity of IMPDH2 for IMP oxidation and simultaneously represses its allosteric modulation by purine nucleotides. Fibroblast growth factor receptor (FGFR) signaling activation triggers IMPDH2-Ser122 dephosphorylation mediated by protein phosphatase 2A (PP2A), which is dependent on FGFR3-mediated PPP2R1A-Tyr261 phosphorylation leading to PPP2CA-PPP2R1A-IMPDH2 interactions.
View Article and Find Full Text PDFAdvances in A-to-I RNA editing in cancer.
Mol Cancer
December 2024
NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China.
RNA modifications are widespread throughout the mammalian transcriptome and play pivotal roles in regulating various cellular processes. These modifications are strongly linked to the development of many cancers. One of the most prevalent forms of RNA modifications in humans is adenosine-to-inosine (A-to-I) editing, catalyzed by the enzyme adenosine deaminase acting on RNA (ADAR) in double-stranded RNA (dsRNA).
View Article and Find Full Text PDFStudy on the Mechanism of UMI-77 in the Treatment of Sepsis-Induced Acute Lung Injury Based on Transcriptomics and Metabolomics.
J Inflamm Res
December 2024
Department of Critical Care Medicine, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, 317000, People's Republic of China.
Introduction: Sepsis-induced acute lung injury (ALI), a critical sequela of systemic inflammation, often progresses to acute respiratory distress syndrome, conferring high mortality. Although UMI-77 has demonstrated efficacy in mitigating lung injury in sepsis, the molecular mechanisms underlying its action have not yet been fully elucidated.
Methods: This study aimed to delineate the mechanism by which UMI-77 counteracts sepsis-induced ALI using comprehensive transcriptomic and metabolomic analyses.
Translation of circular RNAs.
Nucleic Acids Res
January 2025
University of Kentucky, Molecular and Cellular Biochemistry, 741 South Limestone, Lexington, KY 40503, USA.
Circular RNAs (circRNAs) are covalently closed RNAs that are present in all eukaryotes tested. Recent RNA sequencing (RNA-seq) analyses indicate that although generally less abundant than messenger RNAs (mRNAs), over 1.8 million circRNA isoforms exist in humans, much more than the number of currently known mRNA isoforms.
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