Mechanisms of minor pole–mediated spindle bipolarization in human oocytes-Reference-Cited by-同舟云学术

Mechanisms of minor pole–mediated spindle bipolarization in human oocytes

Published:2024-08-23 Issue:6711 Volume:385 Page:
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Wu Tianyu¹^ORCID,Luo Yuxi¹^ORCID,Zhang Meiling²^ORCID,Chen Biaobang³^ORCID,Du Xingzhu¹^ORCID,Gu Hao¹^ORCID,Xie Siyuan¹,Pan Zhiqi¹,Yu Ran¹^ORCID,Hai Ruiqi¹^ORCID,Niu Xiangli⁴^ORCID,Hao Guimin⁵^ORCID,Jin Liping⁶^ORCID,Shi Juanzi⁷^ORCID,Sun Xiaoxi⁸^ORCID,Kuang Yanping⁹^ORCID,Li Wen²^ORCID,Sang Qing¹^ORCID,Wang Lei¹^ORCID

Affiliation:

1. Institute of Pediatrics, Children’s Hospital of Fudan University, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, Fudan University, Shanghai 200032, China.

2. Center for Reproductive Medicine and Fertility Preservation Program, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.

3. NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai 200032, China.

4. Reproductive Hospital of Guangxi Zhuang Autonomous Region, Nanning 530029, China.

5. Hebei Clinical Research Center for Birth Defects, Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China.

6. Laboratory for Reproductive Immunology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China.

7. Assisted Reproduction Center, Northwest Women’s and Children’s Hospital, Xi’an 710003, China.

8. Shanghai JIAI Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China.

9. Department of Assisted Reproduction, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200011, China.

Abstract

Spindle bipolarization, the process of a microtubule mass transforming into a bipolar spindle, is a prerequisite for accurate chromosome segregation. In contrast to mitotic cells, the process and mechanism of spindle bipolarization in human oocytes remains unclear. Using high-resolution imaging in more than 1800 human oocytes, we revealed a typical state of multipolar intermediates that form during spindle bipolarization and elucidated the mechanism underlying this process. We found that the minor poles formed in multiple kinetochore clusters contribute to the generation of multipolar intermediates. We further determined the essential roles of HAUS6, KIF11, and KIF18A in spindle bipolarization and identified mutations in these genes in infertile patients characterized by oocyte or embryo defects. These results provide insights into the physiological and pathological mechanisms of spindle bipolarization in human oocytes.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/science.ado1022

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