文献类型： 外文期刊

作者： Wang, Hui ¹ ; Zhong, Jincheng ¹ ; Zhang, Chengfu ³ ; Chai, Zhixin ¹ ; Cao, Hanwen ³ ; Wang, Jikun ¹ ; Zhu, Jiangjiang; ¹ ;

作者机构： 1.Southwest Minzu Univ, Key Lab Qinghai Tibetan Plateau Anim Genet Resour, Sichuan Prov & Minist Educ, Chengdu 610041, Sichuan, Peoples R China

2.Southwest Minzu Univ, Key Lab Sichuan Prov, Qinghai Tibetan Plateau Anim Genet Resource Reser, Chengdu 610041, Sichuan, Peoples R China

3.Tibet Acad Agr & Anim Husb Sci, State Key Lab Hulless Barley & Yak Germplasm Reso, Lhasa 850000, Tibet, Peoples R China

关键词： Bos grunniens; Intramuscular fat content; Transcriptome; Co-differentially expressed transcripts; ceRNA

期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）

ISSN： 1471-2164

年卷期： 2020 年 21 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundThe Intramuscular fat (IMF) content in meat products, which is positively correlated with meat quality, is an important trait considered by consumers. The regulation of IMF deposition is species specific. However, the IMF-deposition-related mRNA and non-coding RNA and their regulatory network in yak (Bos grunniens) remain unknown. High-throughput sequencing technology provides a powerful approach for analyzing the association between transcriptome-related differences and specific traits in animals. Thus, the whole transcriptomes of yak muscle and adipose tissues were screened and analyzed to elucidate the IMF deposition-related genes. The muscle tissues were used for IMF content measurements.ResultsSignificant differences were observed between the 0.5- and 2.5-year-old yaks. Several mRNAs, miRNAs, lncRNAs and circRNAs were generally expressed in both muscle and adipose tissues. Between the 0.5- and 2.5-year-old yaks, 149 mRNAs, 62 miRNAs, 4 lncRNAs, and 223 circRNAs were differentially expressed in muscle tissue, and 72 mRNAs, 15 miRNAs, 9 lncRNAs, and 211 circRNAs were differentially expressed in adipose tissue. KEGG annotation revelved that these differentially expressed genes were related to pathways that maintain normal biological functions of muscle and adipose tissues. Moreover, 16 mRNAs, 5 miRNAs, 3 lncRNAs, and 5 circRNAs were co-differentially expressed in both types of tissue. We suspected that these co-differentially expressed genes were involved in IMF-deposition in the yak. Additionally, LPL, ACADL, SCD, and FASN, which were previously shown to be associated with the IMF content, were identified in the competing endogenous RNA (ceRNA) regulatory network that was constructed on the basis of the IMF deposition-related genes. Three ceRNA subnetworks also revealed that TCONS-00016416 and its target SIRT1 "talk" to each other through the same miR-381-y and miR-208 response elements, whereas TCONS-00061798 and its target PRKCA, and TCONS-00084092 and its target LPL "talk" to each other through miR-122-x and miR-499-y response elements, respectively.ConclusionTaken together, our results reveal the potential mRNA and noncoding RNAs involved in IMF deposition in the yak, providing a useful resource for further research on IMF deposition in this animal species.