Selenium deficiency-induced multiple tissue damage with dysregulation of immune and redox homeostasis in broiler chicks under heat stress  

作　　者：Ling Zhao Meng Liu Hua Sun Jia-Cheng Yang Yu-Xuan Huang Jia-Qiang Huang Xingen Lei Lv-Hui Sun 

机构地区：[1]State Key Laboratory of Agricultural Microbiology,Hubei Hongshan Laboratory,Frontiers Science Center for Animal Breeding and Sustainable Production,College of Animal Sciences and Technology,Huazhong Agricultural University,Wuhan 430070,China [2]Beijing Advanced Innovation Center for Food Nutrition and Human Health,Department of Nutrition and Health,China Agricultural University,Beijing 100083,China [3]Department of Animal Science,Cornell University,Ithaca 14853,USA

出　　处：《Science China(Life Sciences)》2023年第9期2056-2069,共14页中国科学（生命科学英文版）

基　　金：supported by the National Natural Science Foundation of China (32102588);the Top-notch Young Talent Supporting Program to LHS;Beijing Deyuanshun Biological Technology Co.,Ltd。

摘　　要：Broiler chicks are fast-growing and susceptible to dietary selenium(Se) deficiency. This study sought to reveal the underlying mechanisms of how Se deficiency induces key organ dysfunctions in broilers. Day-old male chicks(n=6 cages/diet, 6 chicks/cage) were fed with a Se-deficient diet(Se-Def, 0.047 mg Se/kg) or the Se-Def+0.3 mg Se/kg(Control, 0.345 mg Se/kg) for 6weeks. The serum, liver, pancreas, spleen, heart, and pectoral muscle of the broilers were collected at week 6 to assay for Se concentration, histopathology, serum metabolome, and tissue transcriptome. Compared with the Control group, Se deficiency induced growth retardation and histopathological lesions and reduced Se concentration in the five organs. Integrated transcriptomics and metabolomics analysis revealed that dysregulation of immune and redox homeostasis related biological processes and pathways contributed to Se deficiency-induced multiple tissue damage in the broilers. Meanwhile, four metabolites in the serum, daidzein, epinephrine, L-aspartic acid and 5-hydroxyindoleacetic acid, interacted with differentially expressed genes with antioxidative effects and immunity among all the five organs, which contributed to the metabolic diseases induced by Se deficiency. Overall, this study systematically elucidated the underlying molecular mechanisms in the pathogenesis of Se deficiency-related diseases, which provides a better understanding of the significance of Se-mediated heath in animals.

关 键 词：SELENIUM multiple tissue damage METABOLOME TRANSCRIPTOME BROILERS 

分 类 号：S831[农业科学—畜牧学]