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The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep

Heat stress can affect the reproductive function of livestock and cause harm to animal production, which can seriously damage the economic interests of livestock producers. Therefore, it is important to explore the effect of heat stress on reproductive function to improve livestock production. In th...

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Autores principales: Song, Yukun, Zhao, Xi, Aihemaiti, Aikebaier, Haire, Aerman, Gao, Yu, Niu, Chao, Yang, Peng, Liu, Guoshi, Jia, Gongxue, Wusiman, Abulizi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9236572/
https://www.ncbi.nlm.nih.gov/pubmed/35769319
http://dx.doi.org/10.3389/fvets.2022.846981
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author Song, Yukun
Zhao, Xi
Aihemaiti, Aikebaier
Haire, Aerman
Gao, Yu
Niu, Chao
Yang, Peng
Liu, Guoshi
Jia, Gongxue
Wusiman, Abulizi
author_facet Song, Yukun
Zhao, Xi
Aihemaiti, Aikebaier
Haire, Aerman
Gao, Yu
Niu, Chao
Yang, Peng
Liu, Guoshi
Jia, Gongxue
Wusiman, Abulizi
author_sort Song, Yukun
collection PubMed
description Heat stress can affect the reproductive function of livestock and cause harm to animal production, which can seriously damage the economic interests of livestock producers. Therefore, it is important to explore the effect of heat stress on reproductive function to improve livestock production. In this study, the experimental animals Turpan black sheep and Suffolk sheep were selected as controls, each with 10 sheep, and the reproductive physiological performance was measured in Turpan, China from April to August when there was no heat stress to strong heat stress. The results showed that the sperm density, vitality, and kinematic parameters of Suffolk sheep were significantly lower than that in Turpan black sheep (p < 0.01) after heat stress, while the sperm acrosome malfunctions and DNA damage were significantly higher in Suffolk sheep (p < 0.01). In addition, the endogenous levels of reproductive hormones and oxidative stress indicators in the blood of Turpan black sheep were stable before and after heat stress treatment, while Suffolk sheep showed different degrees of fluctuations. There was no significant difference in testicular histomorphology between the two after heat stress treatment. However, Suffolk sheep showed a significantly decreased number of spermatocytes after heat stress treatment (p < 0.05). It was found that during meiosis, the proportion of cells in the meiotic zygotene stage of Suffolk sheep was significantly higher than that of Turpan black sheep. To investigate the mechanism of normal spermatogenesis in Turpan black sheep under heat stress, we performed RNA-Seq analysis on the testis. The results showed that there were 3,559 differential genes in Turpan black sheep before and after heat stress, with 2,118 up-regulated genes and 1,441 down-regulated genes. The enrichment analysis of GO and KEGG showed that the differential genes are mainly involved in cellular component organization or biogenesis, cell cycle process, mitotic cell cycle process, meiotic cell cycle process, double-strand break repair and Rap1 signaling pathway, Ras signaling pathway, Cell cycle, signaling pathways regulating pluripotency of stem cells Oocyte meiosis. Genes related to spermatogenesis, SYCP2, TDRD9, BRDT, CEP120, BRCA1, etc. were significantly up-regulated in Turpan black sheep after heat stress. In summary, our results showed that the up-regulation of genes involved in spermatogenesis protects the normal production of sperm in Turpan black sheep under HS, thereby achieving normal reproductive function.Our research systematically elucidated the mechanism of heat stress resistance during spermatogenesis in Turpan black sheep and provided potential possibilities for the subsequent breeding of new heat-resistant breeds.
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spelling pubmed-92365722022-06-28 The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep Song, Yukun Zhao, Xi Aihemaiti, Aikebaier Haire, Aerman Gao, Yu Niu, Chao Yang, Peng Liu, Guoshi Jia, Gongxue Wusiman, Abulizi Front Vet Sci Veterinary Science Heat stress can affect the reproductive function of livestock and cause harm to animal production, which can seriously damage the economic interests of livestock producers. Therefore, it is important to explore the effect of heat stress on reproductive function to improve livestock production. In this study, the experimental animals Turpan black sheep and Suffolk sheep were selected as controls, each with 10 sheep, and the reproductive physiological performance was measured in Turpan, China from April to August when there was no heat stress to strong heat stress. The results showed that the sperm density, vitality, and kinematic parameters of Suffolk sheep were significantly lower than that in Turpan black sheep (p < 0.01) after heat stress, while the sperm acrosome malfunctions and DNA damage were significantly higher in Suffolk sheep (p < 0.01). In addition, the endogenous levels of reproductive hormones and oxidative stress indicators in the blood of Turpan black sheep were stable before and after heat stress treatment, while Suffolk sheep showed different degrees of fluctuations. There was no significant difference in testicular histomorphology between the two after heat stress treatment. However, Suffolk sheep showed a significantly decreased number of spermatocytes after heat stress treatment (p < 0.05). It was found that during meiosis, the proportion of cells in the meiotic zygotene stage of Suffolk sheep was significantly higher than that of Turpan black sheep. To investigate the mechanism of normal spermatogenesis in Turpan black sheep under heat stress, we performed RNA-Seq analysis on the testis. The results showed that there were 3,559 differential genes in Turpan black sheep before and after heat stress, with 2,118 up-regulated genes and 1,441 down-regulated genes. The enrichment analysis of GO and KEGG showed that the differential genes are mainly involved in cellular component organization or biogenesis, cell cycle process, mitotic cell cycle process, meiotic cell cycle process, double-strand break repair and Rap1 signaling pathway, Ras signaling pathway, Cell cycle, signaling pathways regulating pluripotency of stem cells Oocyte meiosis. Genes related to spermatogenesis, SYCP2, TDRD9, BRDT, CEP120, BRCA1, etc. were significantly up-regulated in Turpan black sheep after heat stress. In summary, our results showed that the up-regulation of genes involved in spermatogenesis protects the normal production of sperm in Turpan black sheep under HS, thereby achieving normal reproductive function.Our research systematically elucidated the mechanism of heat stress resistance during spermatogenesis in Turpan black sheep and provided potential possibilities for the subsequent breeding of new heat-resistant breeds. Frontiers Media S.A. 2022-06-13 /pmc/articles/PMC9236572/ /pubmed/35769319 http://dx.doi.org/10.3389/fvets.2022.846981 Text en Copyright © 2022 Song, Zhao, Aihemaiti, Haire, Gao, Niu, Yang, Liu, Jia and Wusiman. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Veterinary Science
Song, Yukun
Zhao, Xi
Aihemaiti, Aikebaier
Haire, Aerman
Gao, Yu
Niu, Chao
Yang, Peng
Liu, Guoshi
Jia, Gongxue
Wusiman, Abulizi
The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep
title The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep
title_full The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep
title_fullStr The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep
title_full_unstemmed The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep
title_short The Mechanism of Heat Stress Resistance During Spermatogenesis in Turpan Black Sheep
title_sort mechanism of heat stress resistance during spermatogenesis in turpan black sheep
topic Veterinary Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9236572/
https://www.ncbi.nlm.nih.gov/pubmed/35769319
http://dx.doi.org/10.3389/fvets.2022.846981
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