ArticleAnimal bioscience2025
PABPN1 functions as a downstream gene of CREB to inhibit the proliferation of preadipocytes.
Article in Animal bioscience, 2025. 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.
- MAZ Regulates the Proliferation of Skeletal Muscle Satellite Cells via SLPI/Wnt-β-Catenin Signaling in Pigs.Veterinary sciences · 2026Article
- Effects of the DUSP6 gene on the proliferation and differentiation of porcine subcutaneous preadipocytes.Animal bioscience · 2025Article
- Transcriptional regulation of porcine PABPN1 gene in adipogenesis.Animal bioscience · 2025Article
- Beyond the Poly(A) Tail: The Expanding Functional Landscape of PABPN1 and Its Dysregulation in OPMD and Cancer.Wiley interdisciplinary reviews. RNAReview
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Authors and funding
8 authors.
Funding
Abstract
objectiveThis study was conducted to reveal the role of nuclear poly(A) binding protein 1 (PABPN1) in the proliferation of preadipocytes, and to reveal the relationship between PABPN1 and cAMP response element (CRE)-binding protein (CREB) in the regulation of preadipocyte proliferation.
methodsVectors overexpressing and siRNAs against PABPN1/CREB were transiently transfected into both porcine preadipocytes and mouse 3T3-L1 cells. Preadipocyte proliferation was measured with cell counting kit-8, 5-ethynyl-2'-deoxyuridine, real-time quantitative polymerase chain reaction, Western blotting, and flow cytometry analyses. Additionally, the transcriptional regulation of CREB on PABPN1 were analyzed with dual-luciferase reporter gene and electrophoretic mobility shift assay.
resultsOverexpression of PABPN1 inhibits, and knockdown of PABPN1 promotes, the proliferation of both porcine preadipocytes and 3T3-L1 cell lines. PABPN1 overexpression increased, while knockdown decreased, the cell population in the G0/G1 phase. These indicates that PABPN1 repressed preadipocyte proliferation by inhibiting cell cycle progress. Additionally, it was revealed that CREB regulated the expression of PABPN1 through binding to the promoter and that CREB inhibited preadipocyte proliferation by repressed cell cycle progress. Furthermore, we showed that PABPN1 functions as a downstream gene of CREB to regulate the proliferation of preadipocytes.
conclusionPABPN1 inhibits preadipocyte proliferation by suppressing the cell cycle. We also found that CREB could promote PABPN1 expression by binding to a motif in the promoter. Further analysis confirmed that PABPN1 functions as a downstream gene of CREB to regulate the proliferation of preadipocytes. These results suggest that the CREB/PABPN1 axis plays a role in the regulation of preadipocyte proliferation, which will contribute to further revealing the mechanism of fat accumulation.
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