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Transcriptome and proteome analysis of pregnancy and postpartum anoestrus ovaries in yak

  • Chen, Zhou (College of Life Science and Engineering, Northwest Minzu University) ;
  • Wang, Jine (College of Life Science and Engineering, Northwest Minzu University) ;
  • Ma, Junyuan (College of Life Science and Engineering, Northwest Minzu University) ;
  • Li, Shuyuan (College of Life Science and Engineering, Northwest Minzu University) ;
  • Huo, Shengdong (College of Life Science and Engineering, Northwest Minzu University) ;
  • Yang, Yanmei (College of Life Science and Engineering, Northwest Minzu University) ;
  • Zhaxi, Yingpai (College of Life Science and Engineering, Northwest Minzu University) ;
  • Zhao, Yongqing (College of Life Science and Engineering, Northwest Minzu University) ;
  • Zhang, Derong (College of Life Science and Engineering, Northwest Minzu University)
  • 투고 : 2021.07.09
  • 심사 : 2021.09.25
  • 발행 : 2022.01.31

초록

Background: Domestic yaks are the most important livestock species on the Qinghai-Tibetan Plateau. Adult female yaks normally breed in the warm season (July to September) and enter anestrous in the cold season (November to April). Nevertheless, it is unclear how ovarian activity is regulated at the molecular level. Objectives: The peculiarities of yak reproduction were assessed to explore the molecular mechanism of postpartum anestrus ovaries in yaks after pregnancy and parturition. Methods: Sixty female yaks with calves were observed under natural grazing in Haiyan County, Qinghai Province. Three yak ovaries in pregnancy and postpartum anestrus were collected. RNA sequencing and quantitative proteomics were employed to analyze the pregnancy and postpartum ovaries after hypothermia to identify the genes and proteins related to the postpartum ovarian cycle. Results: The results revealed 841 differentially expressed genes during the postpartum hypoestrus cycle; 347 were up-regulated and 494 genes were down-regulated. Fifty-seven differential proteins were screened: 38 were up-regulated and 19 were down-regulated. The differential genes and proteins were related to the yak reproduction process, rhythm process, progesterone-mediated oocyte maturation, PI3K/AKT signaling pathway, and MAPK signaling pathway categories. Conclusions: Transcriptome and proteomic sequencing approaches were used to investigate postpartum anestrus and pregnancy ovaries in yaks. The results confirmed that BHLHE40, SF1IX1, FBPX1, HSPCA, LHCGR, BMP15, and ET-1R could affect postpartum hypoestrus and control the state of estrus.

키워드

과제정보

The authors wish to thank BMK Cloud for their help in the experiments.

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