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KIF2A regulates the spindle assembly and the metaphase I-anaphase I transition in mouse oocyte
- Source :
- Scientific Reports
- Publication Year :
- 2016
- Publisher :
- Nature Publishing Group, 2016.
-
Abstract
- KIF2A, a member of the kinesin-13 family, has been reported to play a role in spindle assembly in mitosis. However, its function in mammalian meiosis remains unknown. In this research, we examined the expression, localization and function of KIF2A during mouse oocyte meiosis. KIF2A was expressed in some key stages in mouse oocyte meiosis. Immunofluorescent staining showed that KIF2A distributed in the germinal vesicle at the germinal vesicle stage and as the spindle assembling after meiosis resumption, KIF2A gradually accumulated to the entire spindle. The treatment of oocytes with taxol and nocodazole demonstrated that KIF2A was co-localized with α-tubulin. Depletion of KIF2A by specific short interfering (si) RNA injection resulted in abnormal spindle assembly, failure of spindle migration, misaligned chromosomes and asymmetric cell division. Meanwhile, SKA1 expression level was decreased and the TACC3 localization was disrupted. Moreover, depletion of KIF2A disrupted the actin cap formation, arrested oocytes at metaphase I with spindle assembly checkpoint protein BubR1 activated and finally reduced the rate of the first polar body extrusion. Our data indicate that KIF2A regulates the spindle assembly, asymmetric cytokinesis and the metaphase I-anaphase I transition in mouse oocyte.
- Subjects :
- 0301 basic medicine
Kinesins
Spindle Apparatus
Article
03 medical and health sciences
chemistry.chemical_compound
Mice
0302 clinical medicine
Meiosis
Animals
Mitosis
Metaphase
Anaphase
Multidisciplinary
Germinal vesicle
Chemistry
Gene Expression Profiling
Spindle apparatus
Cell biology
Repressor Proteins
Spindle checkpoint
Nocodazole
030104 developmental biology
030220 oncology & carcinogenesis
Oocytes
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....c824ab6eb40c270207fdd943a7131c93
- Full Text :
- https://doi.org/10.1038/srep39337