Histochemistry and Cell Biology

, Volume 139, Issue 4, pp 525–534

WHAMM is required for meiotic spindle migration and asymmetric cytokinesis in mouse oocytes

  • Xin Huang
  • Lu Ding
  • Rui Pan
  • Peng-Fei Ma
  • Pan-Pan Cheng
  • Chun-Hui Zhang
  • Yu-Ting Shen
  • Lin Xu
  • Yu Liu
  • Xiao-Qin He
  • Zhong-Quan Qi
  • Hai-Long Wang
Original Paper

DOI: 10.1007/s00418-012-1051-z

Cite this article as:
Huang, X., Ding, L., Pan, R. et al. Histochem Cell Biol (2013) 139: 525. doi:10.1007/s00418-012-1051-z

Abstract

WASP homolog associated with actin, membranes and microtubules (WHAMM) is a newly discovered nucleation-promoting factor that links actin and microtubule cytoskeleton and regulates transport from the endoplasmic reticulum to the Golgi apparatus. However, knowledge of WHAMM is limited to interphase somatic cells. In this study, we examined its localization and function in mouse oocytes during meiosis. Immunostaining showed that in the germinal vesicle (GV) stage, there was no WHAMM signal; after meiosis resumption, WHAMM was associated with the spindle at prometaphase I (Pro MI), metaphase I (MI), telophase I (TI) and metaphase II (MII) stages. Nocodazole and taxol treatments showed that WHAMM was localized around the MI spindle. Depletion of WHAMM by microinjection of specific short interfering (si)RNA into the oocyte cytoplasm resulted in failure of spindle migration, disruption of asymmetric cytokinesis and a decrease in the first polar body extrusion rate during meiotic maturation. Moreover, actin cap formation was also disrupted after WHAMM depletion, confirming the failure of spindle migration. Taken together, our data suggest that WHAMM is required for peripheral spindle migration and asymmetric cytokinesis during mouse oocyte maturation.

Keywords

WHAMMImmunofluorescenceMeiosisSpindle migrationAsymmetric cytokinesisMouse oocyte

Abbreviations

WHAMM

WASP homolog associated with actin, membranes and microtubules

PB

Polar body

PB1

First PB

NPF

Nucleation-promoting factor

GV

Germinal vesicle

Pro MI

Prometaphase I

MI

Metaphase I

TI

Telophase I

MII

Metaphase II

ER

Endoplasmic reticulum

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Xin Huang
    • 1
  • Lu Ding
    • 1
  • Rui Pan
    • 1
  • Peng-Fei Ma
    • 1
  • Pan-Pan Cheng
    • 1
  • Chun-Hui Zhang
    • 3
  • Yu-Ting Shen
    • 2
  • Lin Xu
    • 1
  • Yu Liu
    • 1
  • Xiao-Qin He
    • 2
  • Zhong-Quan Qi
    • 1
  • Hai-Long Wang
    • 1
  1. 1.Organ Transplantation InstituteXiamen UniversityXiamenChina
  2. 2.Department of Gynecology and ObstetricsZhongshan Hospital, Xiamen UniversityXiamenChina
  3. 3.Department of Reproductive MedicinePeking University Shenzhen Hospital, Medical Center of Peking UniversityShenzhenChina