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Wang D, Yang Y, Song Y, Fu S, He X, Wang B, Wang L, Chen X, Li X, Liu Y, Cao G. The Effect of Ghrelin on the Maturation of Sheep Oocytes and Early Embryonic Development In Vitro. Animals (Basel) 2022; 12:ani12091158. [PMID: 35565584 PMCID: PMC9100601 DOI: 10.3390/ani12091158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Different gradients of ghrelin (0, 100, 200, and 300 ng/mL) were added to the IVM system of sheep oocytes to observe their changes, and 200 ng/mL ghrelin was found to be the optimal concentration. The RNA-seq analysis showed that the Cell cycle signaling pathway was enriched. The results suggest that adding ghrelin shortens the duration of IVM of sheep oocytes and hinders early embryonic development. Abstract In vitro maturation (IVM) of sheep oocytes and early embryonic development are of great scientific importance for the study of reproductive development in sheep. Ghrelin is an important hormone that regulates the secretion of the growth hormone (GH). In this study, different gradients of ghrelin (0, 100, 200, and 300 ng/mL) were added to the IVM system of sheep oocytes to observe their cell morphology, and Hosesth 33342 staining was used to determine the time taken for oocytes to reach different developmental stages. We found 200 ng/mL ghrelin to be the optimal concentration. The RNA-seq analysis showed that many signaling pathways were significantly altered by ghrelin. Cell cycle, Wnt, and oxidative phosphorylation were activated; the P53 was inhibited. These pathways together regulate the maturation of oocytes and early embryonic development in vitro. The effects of the addition of ghrelin were verified by the expression of GLUT1 in early embryonic development. The results suggest that adding ghrelin shortens the duration of the IVM of sheep oocytes and hinders early embryonic development. This study provides new insights into the effects of exogenous ghrelin on sheep oocyte maturation and early embryonic development in vitro.
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Affiliation(s)
- Daqing Wang
- Institute of Animal Husbandry, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (D.W.); (Y.Y.); (S.F.); (X.H.); (B.W.); (L.W.); (X.C.)
- School of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010010, China
| | - Yanyan Yang
- Institute of Animal Husbandry, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (D.W.); (Y.Y.); (S.F.); (X.H.); (B.W.); (L.W.); (X.C.)
| | - Yongli Song
- Research Center for Animal Genetic Resources of Mongolia Plateau, School of Life Sciences, Inner Mongolia University, Hohhot 010021, China;
| | - Shaoyin Fu
- Institute of Animal Husbandry, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (D.W.); (Y.Y.); (S.F.); (X.H.); (B.W.); (L.W.); (X.C.)
| | - Xiaolong He
- Institute of Animal Husbandry, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (D.W.); (Y.Y.); (S.F.); (X.H.); (B.W.); (L.W.); (X.C.)
| | - Biao Wang
- Institute of Animal Husbandry, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (D.W.); (Y.Y.); (S.F.); (X.H.); (B.W.); (L.W.); (X.C.)
| | - Liwei Wang
- Institute of Animal Husbandry, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (D.W.); (Y.Y.); (S.F.); (X.H.); (B.W.); (L.W.); (X.C.)
| | - Xin Chen
- Institute of Animal Husbandry, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (D.W.); (Y.Y.); (S.F.); (X.H.); (B.W.); (L.W.); (X.C.)
| | - Xihe Li
- Research Center for Animal Genetic Resources of Mongolia Plateau, School of Life Sciences, Inner Mongolia University, Hohhot 010021, China;
- Correspondence: (X.L.); (Y.L.); (G.C.)
| | - Yongbin Liu
- The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010021, China
- Correspondence: (X.L.); (Y.L.); (G.C.)
| | - Guifang Cao
- School of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010010, China
- Correspondence: (X.L.); (Y.L.); (G.C.)
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