作者
Joshua J Meeks, Susan E Crawford, Theron A Russell, Ken-ichiro Morohashi, Jeffrey Weiss, J Larry Jameson
发表日期
2003/3/1
卷号
130
期号
5
页码范围
1029-1036
出版商
Oxford University Press for The Company of Biologists Limited
简介
Mutations of the DAX1 nuclear receptor gene cause adrenal hypoplasia congenita, an X-linked disorder characterized by adrenal insufficiency and hypogonadotropic hypogonadism. Targeted deletion ofDax1 in mice also reveals primary testicular dysgenesis, which is manifest by obstruction of the rete testis by Sertoli cells and hyperplastic Leydig cells, leading to seminiferous tubule dilation and degeneration of germ cells. Because Dax1 is expressed early in gonadal development, and because Sertoli and Leydig cells are located ectopically in the adult, we hypothesized that these testis abnormalities are the result of an early defect in testis development. In Dax1-/Y males, the gonad develops normally until 12.5 dpc. However, by 13.5 dpc, the testis cords are disorganized and incompletely formed in Dax1-deficient mice. The number of germ and Sertoli cells is unchanged, and the expression of Sertoli-specific …
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