ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2024
PARN Maintains RNA Stability to Regulate Insulin Maturation and GSIS in Pancreatic β Cells.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- The RNA-Binding Protein PARN Remodeled 3' UTR Structure Defines Poly(A)-Loading Sites to Mediate Immunoglobulin Homeostasis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- The PTBP1-EZH2-DOCK2 axis promotes M1 microglial polarization and exacerbates neuronal apoptosis following spinal cord injury.Journal of orthopaedic translation · 2026Article
- Orchestrating Nutrient Homeostasis: RNA-Binding Proteins as Molecular Conductors in Metabolic Disease Pathogenesis.Nutrients · 2025Review
- PARN Maintains RNA Stability to Regulate Insulin Maturation and GSIS in Pancreatic β Cells.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
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Authors and funding
12 authors.
Funding
Abstract
Diabetes, a metabolic disorder characterized by hyperglycemia, underscores the importance of normal pancreatic β-cell development and function in maintaining glucose homeostasis. Poly(A)-specific ribonuclease (PARN) serves as the principal regulator of messenger RNA (mRNA) stability, yet its specific role in pancreatic β cells remains unclear. This study utilizes mice with targeted PARN deficiency in β cells to elucidate this role. Notably, Parn conditional knockout mice present unaltered β-cell development and insulin sensitivity but reduced glucose-stimulated insulin secretion (GSIS). The observed outcomes are corroborated in NIT-1 cells. Furthermore, transcriptomic analyses reveal aberrant mRNA expression of genes crucial for insulin secretion in PARN-deficient β cells. Insights from linear amplification of complementary DNA ends and sequencing and coimmunoprecipitation experiments reveal an interaction between PARN and polypyrimidine tract-binding protein 1 (PTBP1), regulating the RNA stability of solute carrier family 30, member 8 (Slc30a8) and carbohydrate sulfotransferase 3 (Chst3). Interference with either PARN or PTBP1 disrupts this stability. These data indicate that PARN deficiency hampers GSIS and insulin maturation by destabilizing Slc30a8 and Chst3 RNAs. These findings provide compelling evidence indicating that PARN is a potential therapeutic target for enhancing insulin maturation and secretion.
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Registered trials
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