PMID- 37253422 OWN - NLM STAT- MEDLINE DCOM- 20230608 LR - 20240103 IS - 1471-2954 (Electronic) IS - 0962-8452 (Print) IS - 0962-8452 (Linking) VI - 290 IP - 1999 DP - 2023 May 31 TI - Convergent molecular evolution of thermogenesis and circadian rhythm in Arctic ruminants. PG - 20230538 LID - 10.1098/rspb.2023.0538 [doi] LID - 20230538 AB - The muskox and reindeer are the only ruminants that have evolved to survive in harsh Arctic environments. However, the genetic basis of this Arctic adaptation remains largely unclear. Here, we compared a de novo assembled muskox genome with reindeer and other ruminant genomes to identify convergent amino acid substitutions, rapidly evolving genes and positively selected genes among the two Arctic ruminants. We found these candidate genes were mainly involved in brown adipose tissue (BAT) thermogenesis and circadian rhythm. Furthermore, by integrating transcriptomic data from goat adipose tissues (white and brown), we demonstrated that muskox and reindeer may have evolved modulating mitochondrion, lipid metabolism and angiogenesis pathways to enhance BAT thermogenesis. In addition, results from co-immunoprecipitation experiments prove that convergent amino acid substitution of the angiogenesis-related gene hypoxia-inducible factor 2alpha (HIF2A), resulting in weakening of its interaction with prolyl hydroxylase domain-containing protein 2 (PHD2), may increase angiogenesis of BAT. Altogether, our work provides new insights into the molecular mechanisms involved in Arctic adaptation. FAU - Li, Manman AU - Li M AUID- ORCID: 0000-0003-0009-3940 AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Li, Xinmei AU - Li X AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Wu, Zhipei AU - Wu Z AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Zhang, Guanghui AU - Zhang G AD - Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Wang, Nini AU - Wang N AUID- ORCID: 0000-0002-3698-5986 AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Dou, Mingle AU - Dou M AUID- ORCID: 0000-0003-2590-0649 AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Liu, Shanlin AU - Liu S AUID- ORCID: 0000-0001-8118-8313 AD - Department of Entomology, China Agricultural University, West Yuanmingyuan Road, Beijing 100193, People's Republic of China. FAU - Yang, Chentao AU - Yang C AUID- ORCID: 0000-0003-3447-2316 AD - BGI Shenzhen, Shenzhen 518083, People's Republic of China. FAU - Meng, Guanliang AU - Meng G AUID- ORCID: 0000-0002-6488-1527 AD - Centre of Taxonomy and Evolutionary Research, Zoological Research Museum Alexander Koenig, 53113 Bonn, Germany. FAU - Sun, Hailu AU - Sun H AUID- ORCID: 0000-0001-8651-2418 AD - BGI Shenzhen, Shenzhen 518083, People's Republic of China. FAU - Hvilsom, Christina AU - Hvilsom C AUID- ORCID: 0000-0001-7870-6888 AD - Copenhagen Zoo, 2000 Frederiksberg, Denmark. FAU - Xie, Guoxiang AU - Xie G AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Li, Yang AU - Li Y AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Li, Zhuo Hui AU - Li ZH AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Wang, Wei AU - Wang W AUID- ORCID: 0000-0002-7523-9249 AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Jiang, Yu AU - Jiang Y AUID- ORCID: 0000-0003-4821-3585 AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. FAU - Heller, Rasmus AU - Heller R AUID- ORCID: 0000-0001-6583-6923 AD - Section for Computational and RNA Biology, Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark. FAU - Wang, Yu AU - Wang Y AUID- ORCID: 0000-0002-0332-6095 AD - Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, People's Republic of China. AD - Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling 712100, People's Republic of China. LA - eng SI - figshare/10.6084/m9.figshare.c.6644026 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230531 PL - England TA - Proc Biol Sci JT - Proceedings. Biological sciences JID - 101245157 SB - IM CIN - Proc Biol Sci. 2024 Jan 10;291(2014):20232448. PMID: 38166424 MH - Animals MH - Adipose Tissue, Brown/metabolism MH - *Circadian Rhythm MH - Goats MH - Reindeer/genetics MH - *Ruminants/genetics MH - *Thermogenesis/genetics MH - Arctic Regions PMC - PMC10229229 OTO - NOTNLM OT - Arctic adaptation OT - brown adipose tissue OT - comparative genomics OT - convergent evolution OT - ruminant COIS- We declare we have no competing interests. EDAT- 2023/05/31 01:09 MHDA- 2023/06/01 06:42 PMCR- 2024/05/31 CRDT- 2023/05/30 19:13 PHST- 2024/05/31 00:00 [pmc-release] PHST- 2023/06/01 06:42 [medline] PHST- 2023/05/31 01:09 [pubmed] PHST- 2023/05/30 19:13 [entrez] AID - rspb20230538 [pii] AID - 10.1098/rspb.2023.0538 [doi] PST - ppublish SO - Proc Biol Sci. 2023 May 31;290(1999):20230538. doi: 10.1098/rspb.2023.0538. Epub 2023 May 31.