Transcriptome analysis reveals the genetic basis of skeletal muscle glycolytic potential based on a pig model
文献类型： 外文期刊
作者： Wu, Wangjun 1 ; Zhang, Zengkai 1 ; Chao, Zhe 2 ; Li, Bojiang 1 ; Li, Rongyang 1 ; Jiang, Aiwen 1 ; Kim, Kee-Hong 3 ; Liu, 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Anim Sci & Technol, Dept Anim Genet Breeding & Reprod, 1 Weigang, Nanjing 210095, Peoples R China
2.Hainan Acad Agr Sci, Inst Anim Sci & Vet Med, Haikou, Hainan, Peoples R China
3.Purdue Univ, Dept Food Sci, W Lafayette, IN 47897 USA
关键词： Pig; Meat quality; Glycolytic potential; Glucose; Glycogen; Glycogen storage diseases
期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）
ISSN： 0378-1119
年卷期： 2021 年 766 卷
页码：
收录情况： SCI
摘要： Glycolytic potential (GP) calculated based on glucose, glycogen, glucose-6-phosphate, and lactate contents is a critical factor for multiple meat quality characteristics. However, the genetic basis of glycolytic metabolism is still unclear. In this study, we constructed six RNA-Seq libraries using longissimus dorsi (LD) muscles from pigs divergent for GP phenotypic values and generated the whole genome-wide gene expression profiles. Furthermore, we identified 25,880 known and 220 novel genes from these skeletal muscle libraries, and 222 differentially expressed genes (DEGs) between the higher and lower GP groups. Notably, we found that the Lactate dehydrogenase B (LDHB) and Fructose-2, 6-biphosphatase 3 (PFKFB3) expression levels were higher in the higher GP group than the lower GP group, and positively correlated with GP and lactic acid (LA), and reversely correlated with pH value at 45 min postmortem (pH(45min)). Besides, LDHB and PFKFB3 expression were positively correlated with drip loss measured at 48 h postmortem (DL48h) and drip loss measured at 24 h postmortem (DL24h). Collectively, we identified a serial of DEGs as the potential key candidate genes affecting GP and found that LDHB and PFKFB3 are closely related to GP and GP-related traits. Our results lay a solid basis for in-depth studies of the regulatory mechanisms on GP and GP-related traits in pigs.
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