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Metabolomic and transcriptomic study to understand changes in metabolic and immune responses in steers under heat stress

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Animal Nutrition 2022年第4期11卷 87-101页

作者： Jun Sik Eom Da Som Park Sang Jin lee Bon-Hee Gu Shin Ja lee Sang-Suk lee Seon-Ho Kim Byeong-Woo Kim sung sill lee Myunghoo Kim Institute of Agriculture and Life Science Gyeongsang National UniversityJinju52828Republic of Korea Department of Animal Science College of Natural Resources&Life SciencePusan National UniversityMiryang50463Republic of Korea Life and Industry Convergence Research Institute Pusan National UniversityMiryang50463Republic of Korea University-Centered Labs Gyeongsang National UniversityJinju52828Republic of Korea Ruminant Nutrition and Anaerobe Laboratory Department of Animal Science and TechnologySunchon National UniversitySuncheon57922Republic of Korea Division of Applied Life Science(BK21) Gyeongsang National UniversityJinju52828Republic of Korea

Heat stress(HS)damages livestock by adversely affecting physiological and immunological ***,fundamental understanding of the metabolic and immunological mechanisms in animals under HS remains elusive,particularly in *** understand the changes on metabolic and immune responses in steers under HS condition,we performed RNA-sequencing and proton nuclear magnetic resonance spectroscopy-based metabolomics on HS-free(temperature humidity index[THI]value:64.92±0.56)and HS-exposed(THI value:79.13±0.56)Jersey steer(n=8,body weight:559.67±32.72 kg).This study clarifies the metabolic changes in 3 biofluids(rumen fluid,serum,and urine)and the immune responses observed in the peripheral blood mononuclear cells of HS-exposed *** integrated approach allowed the discovery of HS-sensitive metabolic and immunological *** metabolomic analysis indicated that HS-exposed steers showed potential HS biomarkers such as isocitrate,formate,creatine,and riboflavin(P<0.05).Among them,there were several integrative metabolic pathways between rumen fluid and ***,HS altered mRNA expression and immune-related signaling pathways.A meta-analysis revealed that HS decreased riboflavin metabolism and the expression of glyoxylate and dicarboxylate metabolism-related ***,metabolic pathways,such as the hypoxia-inducible factor-1 signaling pathway,were downregulated in immune cells by HS(P<0.05).These findings,along with the datasets of pathways and phenotypic differences as potential biomarkers in steers,can support more in-depth research to elucidate the interrelated metabolic and immunological *** would help suggest new strategies to ameliorate the effects of HS,including disease susceptibility and metabolic disorders,in Jersey steers.

关键词： Heat stress Jersey steer Metabolome Transcriptome Immunity Metabolism

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