雷公藤多甙对小鼠生精功能相关基因Herc4、Ipo11和Mrto4表达的影响

文章从影响生精功能相关基因的角度探讨雷公藤多甙抑制小鼠生殖功能的机理,将小鼠随机分为对照组、雷公藤多甙组,应用雷公藤多甙灌胃造成雄性小鼠生殖功能障碍,通过与雌鼠(1:2)合笼观察怀孕率和睾丸组织变化,并采用基因芯片技术观察小鼠睾丸组织的基因表达.结果发现雷公藤多甙组小鼠较对照组怀孕率明显下降,尤其是在8周后怀孕率为0.睾丸曲细精管管壁上生精细胞数量减少,曲细精管内生精细胞部分或全部脱落,阻塞于管腔内,并发现有1932条基因表达出现异常,与生殖相关基因354条,上调112条,下调242条.其中有已经公认的与生殖密切相关的基因Herc4、Ipoll和Mrto4等的表达异常.提示雷公藤多甙引起的小鼠生殖功能障碍与其致生精相关基因的表达异常有关.

Influence of Tripterygium wilfordii on the expression of spermiogenesis related genes Herc4, Ipo11 and Mrto4 in mice

The mechanism of Tripterygium wilfordii (GTW) inhibiting productive function was studied in the male mice. The male mice were randomly divided into control group and GTW group. GTW group had been given Tripterygium wilfordii for 8 weeks. The pregnancy rate was investigated after the male mice mated with the normal female mice (1∶2) in one week. Also the pathological changes of the male mice testis were evaluated by the optical microscope and the expression of genes related to reproduction was investigated by Gene Chip Technology 8 weeks later. The results showed pregnancy rate of GTW group was obviously decreased compared with the control mice, and no pregnancy occurred in GTW group at 8 weeks. In the testis tissues of GTW group, the spermatogenic cells in the convoluted seminiferous tubules were obviously decreased and the lumen twas obstructed by large deciduous spermatogenic cells. The number of abnormal expression genes in this group was 1 932. Among them, 354 genes were related to reproduction, including 112 up-regulated and 242 down-regulated genes. Genes Herc4, Ipo11, and Mrto4, which are closely associated with spermiogenesis, were expressed irregularly. The outcome indicates that the inhibitive reproduction of Tripterygium wilfordii in the male mice is associated with the abnormal expression of spermiogenesis genes.