畜牧兽医学报 ›› 2023, Vol. 54 ›› Issue (4): 1490-1499.doi: 10.11843/j.issn.0366-6964.2023.04.013

• 生物技术与繁殖 • 上一篇    下一篇

Toll样受体7/8在公猪生殖系统中的表达及其配体对猪X/Y精子分选效果评价

吴昌华1, 陈伟东1, 杨文政1, 莫健新2, 洪林君1, 张献伟2*, 黄思秀1*   

  1. 1. 华南农业大学动物科学学院/国家生猪种业工程技术研究中心, 广州 510642;
    2. 岭南现代农业科学与技术广东省实验室云浮分中心, 云浮 527400
  • 收稿日期:2022-09-22 出版日期:2023-04-23 发布日期:2023-04-27
  • 通讯作者: 张献伟,主要从事动物遗传育种与繁殖研究,E-mail:zxianw@163.com;黄思秀,主要从事动物遗传育种与繁殖研究,E-mail:sxhuang815@scau.edu.cn
  • 作者简介:吴昌华(1996-),男,苗族,湖南凤凰人,硕士,主要从事动物遗传育种与繁殖研究,E-mail:1697311946@qq.com
  • 基金资助:
    广东省重点领域研发计划项目(2021B0707010007);广东省乡村振兴战略专项“广东省畜禽地方品种保护与开发利用提升工程”(2018143)

Expression of Toll-like Receptors 7/8 in Boar Reproductive System and Evaluation of Effect of their Ligands on Boar X/Y Sperm Sorting

WU Changhua1, CHEN Weidong1, YANG Wenzheng1, MO Jianxin2, HONG Linjun1, ZHANG Xianwei2*, HUANG Sixiu1*   

  1. 1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China;
    2. Yunfu Branch, Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Yunfu 527400, China
  • Received:2022-09-22 Online:2023-04-23 Published:2023-04-27

摘要: 旨在分析Toll样受体7/8(TLR7/8)在公猪精子及生殖器官中的表达情况,并探讨是否能通过其配体处理的方式分离猪X精子和Y精子。本研究采用qRT-PCR分析3头健康成年公猪睾丸、附睾头、附睾体、附睾尾以及精子中TLR7和TLR8基因的mRNA表达水平,利用免疫组化检测公猪睾丸和附睾中TLR7和TLR8蛋白的表达,并通过细胞免疫荧光分析其在不同物种(健康成年小鼠、公牛和公猪)精子中的表达情况,将其配体R848与猪精子共孵育,研究其对精子活力以及X/Y精子分离的影响。结果表明,TLR7和TLR8 mRNA在公猪睾丸、附睾头、附睾体、附睾尾组织以及精子中均表达;免疫组化结果显示,TLR7/8蛋白在睾丸中主要表达于生殖细胞,在附睾中主要表达于柱状细胞微绒毛中;细胞免疫荧光结果表明,TLR7和TLR8蛋白只表达于小鼠和牛X精子尾部,Y精子中不表达,但TLR7和TLR8蛋白在公猪X和Y精子中都表达且表达模式无显著差异,TLR7蛋白主要表达于猪精子头部顶体区域,TLR8蛋白主要表达于猪精子尾部;与对照组相比,用TLR7和TLR8配体R848孵育猪精子后,精子活力降低,但上层精子的性别比例无显著差异(P>0.05)。以上结果表明,TLR7和TLR8在猪X精子和Y精子间表达无显著差异,但其表达模式与小鼠和牛存在差异,因此TLR7/8可能不适用于猪X精子和Y精子的分离。

关键词: TLR7/8, R848, 公猪, 性别控制

Abstract: This study aimed to analyze the expression of Toll-like receptor 7/8 (TLR7/8) in boar sperm and reproductive organs, and to explore whether boar X sperm and Y sperm could be separated by their ligand treatment. In this study, the mRNA expression levels of TLR7 and TLR8 genes in testis, caupt, corpus, caudu and sperm of 3 healthy adult boars were analyzed by qRT-PCR. The protein expression pattern of TLR7 and TLR8 in testis and epididymis of boar was investigated by immunohistochemistry. Their expression in sperm of different species (healthy adult mice, bulls and boars) was analyzed by cellular immunofluorescence. Finally, the effects of TLR7 and TLR8 on sperm motility and X/Y sperm separation were investigated by co-incubating their ligand R848 with boar sperm. The results showed that TLR7/8 mRNAs were expressed in boar testis, caupt, corpus, caudu and sperm. TLR7/8 proteins were mainly expressed in germ cells in testis and in columnar cell microvilli in epididymis. TLR7/8 proteins were only expressed in the tail of mouse and bull X sperm, but not in Y sperm. However, TLR7/8 proteins were expressed in both boar X and Y sperms with no significant difference in expression pattern. And TLR7 protein was mainly located in the acrosome of boar sperm head, while TLR8 protein was mainly located in the tail of boar sperm. Compared with the control group, the sperm motility of the treated group with TLR7/8 ligand R848 was reduced, but the sex ratio of the upper sperms was not significantly different (P>0.05). In conclusion, there are no significant difference in the expression of TLR7/8 between boar X sperm and Y sperm, but their expression patterns are different from those of mouse and bull sperm, so TLR7/8 may not be suitable for the separation of boar X sperm and Y sperm.

Key words: TLR7/8, R848, boar, sex control

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