Abstract：
:Sertoli cells of testis belong to a unique type of polarized epithelial cells and are essential for spermatogenesis. They form the blood-testis barrier at the base of seminiferous tubule. Their numerous long, microtubule-rich processes extend inward and associate with developing germ cells to sustain germ cell growth and differentiation. How Sertoli cells develop and maintain their elaborate processes has been an intriguing question. Here we showed that, by microinjecting lentiviral preparations into mouse testes of 29 days postpartum, we were able to specifically label individual Sertoli cells with GFP, thus achieving a clear view of their natural configurations together with associated germ cells in situ. Moreover, compared to other microtubule plus end-tracking proteins such as CLIP-170 and p150(Glued), EB1 was highly expressed in Sertoli cells and located along microtubule bundles in Sertoli cell processes. Stable overexpression of a GFP-tagged dominant-negative EB1 mutant disrupted microtubule organizations in cultured Sertoli cells. Furthermore, its overexpression in testis Sertoli cells altered their shapes. Sertoli cells in situ became rod-like, with decreased basal and lateral cell processes. Seminiferous tubule circularity and germ cell number were also reduced. These data indicate a requirement of proper microtubule arrays for Sertoli cell plasticity and function in testis.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Wang F,Zhang Q,Cao J,Huang Q,Zhu Xdoi
10.1016/j.yexcr.2007.09.022subject
Has Abstractpub_date
2008-01-01 00:00:00pages
213-26issue
1eissn
0014-4827issn
1090-2422pii
S0014-4827(07)00455-7journal_volume
314pub_type
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