Cao Xianglin, Cui Han, Ji Xinyu, Li Baohua, Lu Ronghua, Zhang Yuru, Chen Jianjun
College of Fisheries, Henan Normal University, Xinxiang 453007, China.
College of Life Science, Henan Normal University, Xinxiang 453007, China.
Aquac Nutr. 2023 Jun 3;2023:7965735. doi: 10.1155/2023/7965735. eCollection 2023.
Branched-chain amino acids (BCAAs) can be critically involved in skeletal muscle growth and body energy homeostasis. Skeletal muscle growth is a complex process; some muscle-specific microRNAs (miRNAs) are involved in the regulation of muscle thickening and muscle mass. Additionally, the regulatory network between miRNA and messenger RNA (mRNA) in the modulation of the role of BCAAs on skeletal muscle growth in fish has not been studied. In this study, common carp was starved for 14 days, followed by a 14-day gavage therapy with BCAAs, to investigate some of the miRNAs and genes that contribute to the regulation of normal growth and maintenance of skeletal muscle in response to short-term BCAA starvation stress. Subsequently, the transcriptome and small RNAome sequencing of carp skeletal muscle were performed. A total of 43,414 known and 1,112 novel genes were identified, in addition to 142 known and 654 novel miRNAs targeting 22,008 and 33,824 targets, respectively. Based on their expression profiles, 2,146 differentially expressed genes (DEGs) and 84 differentially expressed miRNA (DEMs) were evaluated. Kyoto Encyclopedia of Genes and Genome pathways, including the proteasome, phagosome, autophagy in animals, proteasome activator complex, and ubiquitin-dependent protein catabolic process, were enriched for these DEGs and DEMs. Our findings revealed the role of , , , , , , , and in skeletal muscle growth, protein synthesis, and catabolic metabolism. Furthermore, miR-135c, miR-192, miR-194, and miR-203a may play key roles in maintaining the normal activities of the organism by regulating genes related to muscle growth, protein synthesis, and catabolism. This study on transcriptome and miRNA reveals the potential molecular mechanisms underlying the regulation of muscle protein deposition and provides new insights into genetic engineering techniques to improve common carp muscle development.
支链氨基酸(BCAAs)在骨骼肌生长和机体能量稳态中起着关键作用。骨骼肌生长是一个复杂的过程;一些肌肉特异性微小RNA(miRNAs)参与肌肉增厚和肌肉量的调节。此外,在鱼类中,miRNA与信使核糖核酸(mRNA)之间的调控网络在BCAAs对骨骼肌生长作用的调节方面尚未得到研究。在本研究中,将鲤鱼饥饿14天,随后用BCAAs进行14天的灌胃治疗,以研究一些在短期BCAA饥饿应激下有助于调节骨骼肌正常生长和维持的miRNAs和基因。随后,对鲤鱼骨骼肌进行转录组和小RNA组测序。除了分别靶向22,008个和33,824个靶标的142个已知miRNAs和654个新miRNAs外,还鉴定出总共43,414个已知基因和1,112个新基因。基于它们的表达谱,评估了2,146个差异表达基因(DEGs)和84个差异表达miRNA(DEMs)。京都基因与基因组百科全书通路,包括蛋白酶体、吞噬体、动物自噬、蛋白酶体激活复合物和泛素依赖性蛋白质分解代谢过程,在这些DEGs和DEMs中显著富集。我们的研究结果揭示了……在骨骼肌生长、蛋白质合成和分解代谢中的作用。此外,miR-135c、miR-192、miR-194和miR-203a可能通过调节与肌肉生长、蛋白质合成和分解代谢相关的基因,在维持机体正常活动中发挥关键作用。这项关于转录组和miRNA的研究揭示了肌肉蛋白质沉积调控的潜在分子机制,并为改善鲤鱼肌肉发育的基因工程技术提供了新的见解。