| Title: | Effect of glycolysis and heat shock proteins on hypoxia adaptation of Tibetan sheep at different altitude |
| Author(s): | Wen Y; Hu J; Wang J; Liu X; Li S; Luo Y; |
| Address: | "Faculty of Animal Science and Technology, Gansu Agricultural University, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Lanzhou 730070, China. Faculty of Animal Science and Technology, Gansu Agricultural University, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Lanzhou 730070, China. Electronic address: lisb@gsau.edu.cn. Faculty of Animal Science and Technology, Gansu Agricultural University, Gansu Key Laboratory of Herbivorous Animal Biotechnology, Lanzhou 730070, China. Electronic address: luoyz@gsau.edu.cn" |
| DOI: | 10.1016/j.gene.2021.145893 |
| ISSN/ISBN: | 1879-0038 (Electronic) 0378-1119 (Linking) |
| Abstract: | "Glycolysis and heat shock proteins (HSPs) play an important role in mediating the physiological response to hypoxia. The changes of glycolysis and HSPs with altitude would provide important information regarding ways to prevent hypoxia-related sickness in both animals and humans. In this study, the expression pattern of HIF1A, PDK4, HSP27 and HSP60, indexes activity and content of glucose metabolism were detected in heart, lung, brain, and quadriceps femoris taken from Tibetan sheep (Ovis aries) that were raised at different altitudes (2,500 m, 3,500 m and 4,500 m). The expression of HIF1A and PDK4 was increased with increasing altitude in all of the tissues. The lactate dehydrogenase (LDH) activities and adenosine triphosphate (ATP), nicotinamide adenine dinucleotide (NADH (redox state), NAD(+)), lactic acid (LA), pyruvic acid (PA) contents were all increased with increasing altitude in all of the tissues. The ratio of NADH/NAD(+) and LA/PA were higher in sheep at an altitude of 4,500 m than of 3,500 m and 2,500 m in all tissues, except for the NADH/NAD(+) ratio in lung and quadriceps femoris. An increase in the protein and mRNA expression of ATP-independent HSP27 during hypoxia condition was detected. The expression of ATP-dependent HSP60 mRNA and protein was increased in all of the tissues at an altitude of 3,500 m than of 2,500 m, but was decreased at an altitude of 4,500 m. These results suggest that glycolysis and HSPs are upregulated to ensure energy supply and proteostasis during hypoxia, but energy conservation may be prioritized over cytoprotective protein chaperoning in Tibetan sheep tissues during extreme hypoxia" |
| Keywords: | "*Acclimatization Altitude Animals Cell Hypoxia Gene Expression Regulation Glycolysis Heat-Shock Proteins/*genetics/*metabolism Hypoxia-Inducible Factor 1, alpha Subunit/*genetics Sheep Tibet Up-Regulation Hif1a HSPs Hypoxia Tibetan sheep;" |
| Notes: | "MedlineWen, Yuliang Hu, Jiang Wang, Jiqing Liu, Xiu Li, Shaobin Luo, Yuzhu eng Netherlands 2021/08/14 Gene. 2021 Nov 30; 803:145893. doi: 10.1016/j.gene.2021.145893. Epub 2021 Aug 9" |
