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- Title
Kinesin-7 CENP-E regulates the formation and structural maintenance of the acrosome.
- Authors
She, Zhen-Yu; Yu, Kai-Wei; Wei, Ya-Lan; Zhong, Ning; Lin, Yang
- Abstract
The acrosome is a special organelle that develops from the Golgi apparatus and the endolysosomal compartment in the spermatids. Centromere protein E (CENP-E) is an essential kinesin motor in chromosome congression and alignment. This study is aimed at investigating the roles and mechanisms of kinesin-7 CENP-E in the formation of the acrosome during spermatogenesis. Male ICR mice are injected with GSK923295 for long-term inhibition of CENP-E. Chemical inhibition and siRNA-mediated knockdown of CENP-E are carried out in the GC-2 spd cells. The morphology of the acrosomes is determined by the HE staining, immunofluorescence, and transmission electron microscopy. We have identified CENP-E is a key factor in the formation and structural maintenance of the acrosome during acrosome biogenesis. Long-term inhibition of CENP-E by GSK923295 results in the asymmetric acrosome and the dispersed acrosome. CENP-E depletion leads to the malformation of the Golgi complex and abnormal targeting of the PICK1- and PIST-positive Golgi-associated vesicles. Our findings uncover an essential role of CENP-E in membrane trafficking and structural organization of the acrosome in the spermatids during spermatogenesis. Our results shed light on the molecular mechanisms involved in vesicle trafficking and architecture maintenance of the acrosome.
- Subjects
GOLGI apparatus; SPERMATOGENESIS; LABORATORY mice; TRANSMISSION electron microscopy; KINESIN; CENTROMERE
- Publication
Cell & Tissue Research, 2021, Vol 383, Issue 3, p1167
- ISSN
0302-766X
- Publication type
Article
- DOI
10.1007/s00441-020-03341-3