Zhanhong Gao, Quyangangmao Su, Sayed Haidar Abbas Raza, Cristian Piras, Mona N. BinMowyna, Majid Al-Zahrani, Charalampos Mavromatis, Raafat T. M. Makhlof, Mustafa M. Senna, Linsheng Gui
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A total of 37,790 genes and 16,400 lncRNAs that regulate fat deposition were identified. Among them, 2327 mRNAs and 474 lncRNAs were differentially expressed between calves and adult yaks. DEGs stearoyl-CoA desaturase (SCD), fatty acid synthase (FASN), fatty acid binding protein 4 (FABP4) and fibronectin 1 (FN1) and DELs MSTRG.15795.4 and MSTRG.35028.6 were screened. The enrichment and pathway analysis regulated by the DMEs and DELs were predicted. We found significantly enriched biological processes and pathways involved in fat deposition, including the biosynthesis of unsaturated fatty acids, fatty acid biosynthesis, fatty acid elongation, and the mTOR signaling pathway. Co-expression network of the DELs and related genes, including MSTRG.10268.1-placenta associated 8 (<i>PLAC8</i>), MSTRG.16223.1-galectin 3 (<i>LGALS3</i>), MSTRG.34732.1-glycerol-3-phosphate acyltransferase, mitochondrial (<i>GPAM</i>), MSTRG.11907.11-fibroblast growth factor 1 (<i>FGF1</i>), MSTRG.34342.1-lipase A, lysosomal acid type (<i>LIPA</i>), and MSTRG.1667.2-integrin subunit beta 2 (<i>ITGB2</i>) was constructed. RT-qPCR verified the sequence results. 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Identification and Co-expression Analysis of Differentially Expressed LncRNAs and mRNAs Regulate Intramuscular Fat Deposition in Yaks at Two Developmental Stages
Intramuscular fat (IMF) content is a key indicator of yak meat quality. This study aimed to identify lncRNAs that regulate IMF deposition in yaks. Three male calf yaks (3 months) and three male adult yaks (3 years) were used in the current study. After slaughter, the tissue morphology of the longissimus dorsi (LD) muscle was assessed using a cry-sectioning technique and differentially expressed lncRNAs and mRNAs (DELs and DEMs) were identified using RNA-Seq technology. The diameter and volume of fat droplets were significantly larger and bigger, respectively, in adults than in calves (P < 0.001). A total of 37,790 genes and 16,400 lncRNAs that regulate fat deposition were identified. Among them, 2327 mRNAs and 474 lncRNAs were differentially expressed between calves and adult yaks. DEGs stearoyl-CoA desaturase (SCD), fatty acid synthase (FASN), fatty acid binding protein 4 (FABP4) and fibronectin 1 (FN1) and DELs MSTRG.15795.4 and MSTRG.35028.6 were screened. The enrichment and pathway analysis regulated by the DMEs and DELs were predicted. We found significantly enriched biological processes and pathways involved in fat deposition, including the biosynthesis of unsaturated fatty acids, fatty acid biosynthesis, fatty acid elongation, and the mTOR signaling pathway. Co-expression network of the DELs and related genes, including MSTRG.10268.1-placenta associated 8 (PLAC8), MSTRG.16223.1-galectin 3 (LGALS3), MSTRG.34732.1-glycerol-3-phosphate acyltransferase, mitochondrial (GPAM), MSTRG.11907.11-fibroblast growth factor 1 (FGF1), MSTRG.34342.1-lipase A, lysosomal acid type (LIPA), and MSTRG.1667.2-integrin subunit beta 2 (ITGB2) was constructed. RT-qPCR verified the sequence results. The molecular regulatory mechanisms of lncRNAs on intramuscular fat deposition in yak were further explored.
Graphical Abstract
Co-expression of lncRNAs and mRNAs regulates IMF deposition mechanisms.
期刊介绍：
Biochemical Genetics welcomes original manuscripts that address and test clear scientific hypotheses, are directed to a broad scientific audience, and clearly contribute to the advancement of the field through the use of sound sampling or experimental design, reliable analytical methodologies and robust statistical analyses.
Although studies focusing on particular regions and target organisms are welcome, it is not the journal’s goal to publish essentially descriptive studies that provide results with narrow applicability, or are based on very small samples or pseudoreplication.
Rather, Biochemical Genetics welcomes review articles that go beyond summarizing previous publications and create added value through the systematic analysis and critique of the current state of knowledge or by conducting meta-analyses.
Methodological articles are also within the scope of Biological Genetics, particularly when new laboratory techniques or computational approaches are fully described and thoroughly compared with the existing benchmark methods.
Biochemical Genetics welcomes articles on the following topics: Genomics; Proteomics; Population genetics; Phylogenetics; Metagenomics; Microbial genetics; Genetics and evolution of wild and cultivated plants; Animal genetics and evolution; Human genetics and evolution; Genetic disorders; Genetic markers of diseases; Gene technology and therapy; Experimental and analytical methods; Statistical and computational methods.
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