Alternative polyadenylation writer CSTF2 forms a positive loop with FGF2 to promote tubular epithelial-mesenchymal transition and renal fibrosis

Y. Tan; T. Zheng; R. Zhang; S. Chen; Q. Cheng; J. Zhang; R. Wang; M. Chen; N. Na

doi:10.1016/j.bbadis.2022.166541

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Alternative polyadenylation writer CSTF2 forms a positive loop with FGF2 to promote tubular epithelial-mesenchymal transition and renal fibrosis

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Peer reviewed

Alternative polyadenylation writer CSTF2 forms a positive loop with FGF2 to promote tubular epithelial-mesenchymal transition and renal fibrosis

Y. Tan, T. Zheng, R. Zhang, S. Chen, Q. Cheng, J. Zhang, R. Wang, M. Chen and N. Na

Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease, Vol.1868(12), Art. 166541

2022

DOI: https://doi.org/10.1016/j.bbadis.2022.166541

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Abstract

Effective therapies for renal fibrosis, the common endpoint for most kidney diseases, are lacking. We previously reported that alternative polyadenylation (APA) drives transition from acute kidney injury to chronic kidney disease, suggesting a potential role for APA in renal fibrogenesis. Here, we found that among canonical APA writers, CSTF2 expression was upregulated in tubular epithelial cells (TEC) of fibrotic kidneys. CSTF2 was also identified as a TGF-β-inducible pro-fibrotic gene. Further analysis revealed that CSTF2 promoted epithelial-mesenchymal transition (EMT) and extracellular matrix (ECM) overproduction in TEC by inducing 3’UTR shortening and upregulation of the expression of basic fibroblast growth factor 2 (FGF2). Additionally, 3’UTR shortening stabilised FGF2 mRNA through miRNA evasion. Interestingly, FGF2 enhanced CSTF2 expression, leading to the forming of a CSTF2-FGF2 positive loop in TEC. Furthermore, CSTF2 knockdown alleviated unilateral ureteral obstruction-induced renal fibrosis in vivo. Finally, we developed a CSTF2-targeted antisense oligonucleotide (ASO) and validated its effectiveness in vitro. These results indicate that the expression of the APA writer, CSTF2, is upregulated by TGF-β and CSTF2 facilitates TGF-β-induced FGF2 overexpression, forming a TGF-β-CSTF2-FGF2 pro-fibrotic axis in TEC. CSTF2 is a potentially promising target for renal fibrosis that does not directly disrupt TGF-β.

Details

Title: Alternative polyadenylation writer CSTF2 forms a positive loop with FGF2 to promote tubular epithelial-mesenchymal transition and renal fibrosis
Authors/Creators: Y. Tan (Author/Creator) - Third Affiliated Hospital of Sun Yat-sen University
T. Zheng (Author/Creator)
R. Zhang (Author/Creator)
S. Chen (Author/Creator)
Q. Cheng (Author/Creator)
J. Zhang (Author/Creator)
R. Wang (Author/Creator)
M. Chen (Author/Creator)
N. Na (Author/Creator)
Publication Details: Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease, Vol.1868(12), Art. 166541
Publisher: Elsevier BV
Identifiers: 991005543300307891
Murdoch Affiliation: Centre for Molecular Medicine and Innovative Therapeutics
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 1 Clinical & Life Sciences; 1.54 Molecular & Cell Biology - Genetics; 1.54.469 Alternative Splicing
Web Of Science research areas: Biochemistry & Molecular Biology; Biophysics; Cell Biology
ESI research areas: Clinical Medicine