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YB-1 Recruits Drosha to Promote Splicing of pri-miR-192 to Mediate the Proangiogenic Effects of H2 S.
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- Author(s): Zhou, Yu1 (AUTHOR); Li, Xing-Hui1,2 (AUTHOR); Xue, Wen-Long1 (AUTHOR); Jin, Sheng1,3 (AUTHOR); Li, Meng-Yao1 (AUTHOR); Zhang, Cai-Cai1,4 (AUTHOR); Yu, Bo5 (AUTHOR); Zhu, Lei5 (AUTHOR) ; Liang, Kun5 (AUTHOR); Chen, Ying1 (AUTHOR); Tao, Bei-Bei1 (AUTHOR); Zhu, Yi-Zhun6,7 (AUTHOR) ; Wang, Ming-Jie1 (AUTHOR) ; Zhu, Yi-Chun1 (AUTHOR)
- Source:
Antioxidants & Redox Signaling. Apr2022, Vol. 36 Issue 10-12, p760-783. 24p.- Subject Terms:
- Source:
- Additional Information
- Abstract: Aims: The genes targeted by miRNAs have been well studied. However, little is known about the feedback mechanisms to control the biosynthesis of miRNAs that are essential for the miRNA feedback networks in the cells. In this present study, we aimed at examining how hydrogen sulfide (H2S) promotes angiogenesis by regulating miR-192 biosynthesis. Results: H2S promoted in vitro angiogenesis and angiogenesis in Matrigel plugs embedded in mice by upregulating miR-192. Knockdown of the H2S-generating enzyme cystathionine γ-lyase (CSE) suppressed in vitro angiogenesis, and this suppression was rescued by exogenous H2S donor NaHS. Plakophilin 4 (PKP4) served as a target gene of miR-192. H2S up-regulated miR-192 via the VEGFR2/Akt pathway to promote the splicing of primary miR-192 (pri-miR-192), and it resulted in an increase in both the precursor- and mature forms of miR-192. H2S translocated YB-1 into the nuclei to recruit Drosha to bind with pri-miR-192 and promoted its splicing. NaHS treatment promoted angiogenesis in the hindlimb ischemia mouse model and the skin-wound-healing model in diabetic mice, with upregulated miR-192 and downregulated PKP4 on NaHS treatment. In human atherosclerotic plaques, miR-192 levels were positively correlated with the plasma H2S concentrations. Innovation and Conclusion: Our data reveal a role of YB-1 in recruiting Drosha to splice pri-miR-192 to mediate the proangiogenic effect of H2S. CSE/H2S/YB-1/Drosha/miR-192 is a potential therapeutic target pathway for treating diseases, including organ ischemia and diabetic complications. Antioxid. Redox Signal. 36, 760–783. The Clinical Trial Registration number is 2016–224. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Antioxidants & Redox Signaling is the property of Mary Ann Liebert, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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