LncRNA-TBP mediates TATA-binding protein recruitment to regulate myogenesis and induce slow-twitch
文献类型： 外文期刊
作者： Ma, Manting 1 ; Cai, Bolin 1 ; Zhou, Zhen 1 ; Kong, Shaofen 1 ; Zhang, Jing 1 ; Xu, Haiping 1 ; Zhang, Xiquan 1 ; Nie, Qinghua 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Lingnan Guangdong Lab Modern Agr, Guangzhou 510642, Guangdong, Peoples R China
2.South China Agr Univ, Coll Anim Sci, State Key Lab Conservat & Utilizat Subtrop Agro Bi, Guangzhou 510642, Guangdong, Peoples R China
3.Minist Agr, Guangdong Prov Key Lab Agro Anim Genom & Mol Breed, Guangzhou 510642, Guangdong, Peoples R China
4.Minist Agr, Key Lab Chicken Genet Breeding & Reprod, Guangzhou 510642, Guangdong, Peoples R China
关键词： LncRNA-TBP; RNA binding proteins (RBPs); TBP; Myogenesis; Muscle phenotype transformation
期刊名称：CELL COMMUNICATION AND SIGNALING （ 影响因子：8.4； 五年影响因子：8.0 ）
ISSN：
年卷期： 2023 年 21 卷 1 期
页码：
收录情况： SCI
摘要： Background Skeletal muscle is comprised of heterogeneous myofibers that differ in their physiological and metabolic parameters. Of these, slow-twitch (type I; oxidative) myofibers have more myoglobin, more mitochondria, and higher activity of oxidative metabolic enzymes compared to fast-twitch (type II; glycolytic) myofibers.Methods In our previous study, we found a novel LncRNA-TBP (for "LncRNA directly binds TBP transcription factor ") is specifically enriched in the soleus (which has a higher proportion of slow myofibers). The primary myoblast cells and animal model were used to assess the biological function of the LncRNA-TBP in vitro or in vivo. Meanwhile, we performed a RNA immunoprecipitation (RIP) and pull-down analysis to validate this interaction between LncRNA-TBP and TBP.Results Functional studies demonstrated that LncRNA-TBP inhibits myoblast proliferation but promotes myogenic differentiation in vitro. In vivo, LncRNA-TBP reduces fat deposition, activating slow-twitch muscle phenotype and inducing muscle hypertrophy. Mechanistically, LncRNA-TBP acts as a regulatory RNA that directly interacts with TBP protein to regulate the transcriptional activity of TBP-target genes (such as KLF4, GPI, TNNI2, and CDKN1A).Conclusion Our findings present a novel model about the regulation of LncRNA-TBP, which can regulate the transcriptional activity of TBP-target genes by recruiting TBP protein, thus modulating myogenesis progression and inducing slow-twitch fibers.
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