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Updated: Oct 11, 2025
Meiotic Spindle Assessment in Mouse Oocytes by siRNA-mediated Silencing
Published on: October 11, 2015
The N501Y Mutation of SARS-CoV-2 Spike Protein Impairs Spindle Assembly in Mouse Oocytes
Huage Liu1, Jianwu Shi1, Kin Lam Fok2
1Institute of Reproductive Medicine, Medical School, Nantong University, Nantong, China.
Abstract:
The COVID-19 pandemic has been continuing for one and a half year and caused a profound effect on human health. Although advanced researches and literatures are gathered, the influences of SARS-CoV-2 on the reproduction systems are largely unknown, especially on the female reproductive functions. The purpose of this study was to investigate the effect of N501Y mutant spike protein of SARS-Cov-2 on oocyte maturation. We demonstrated that the N501Y mutant of SARS-CoV-2 spike protein impaired the mouse oocyte maturation accompanied by abnormal spindle assembly. Furthermore, the mean spindle length and the plate width were significantly increased in the N501Y-treated group compared to the control group. These results indicated the potential impairment of maturation of the oocytes caused by the infection of SARS-CoV-2, albeit current results were derived from mouse oocytes. The present study provided a theoretical basis for the attention of female reproductive health during the COVID-19 pandemic and shed light on the potential risk of SARS-CoV-2 in the successful rate of assisted reproduction.
Insights
The SARS-CoV-2 N501Y mutant spike protein impairs mouse oocyte maturation and spindle assembly. This finding highlights potential risks to female reproductive health and assisted reproduction success rates during the COVID-19 pandemic.
Area of Science:
- Reproductive Biology
- Virology
- Cell Biology
Background:
- The COVID-19 pandemic has profoundly impacted global health.
- While much is known about SARS-CoV-2, its effects on human reproductive systems, particularly female reproductive functions, remain largely unexplored.
- Understanding these impacts is crucial for reproductive health management.
Purpose of the Study:
- To investigate the impact of the N501Y mutant spike protein of SARS-CoV-2 on oocyte maturation.
- To assess the effects on spindle assembly and oocyte morphology.
Main Methods:
- Exposure of mouse oocytes to the N501Y mutant SARS-CoV-2 spike protein.
- Microscopic analysis of oocyte maturation, spindle organization, and meiotic progression.
- Quantitative measurements of spindle length and plate width.
Main Results:
- The N501Y mutant spike protein significantly impaired mouse oocyte maturation.
- Abnormal spindle assembly was observed in oocytes treated with the N501Y mutant spike protein.
- A significant increase in mean spindle length and plate width was noted in the treated group compared to controls.
Conclusions:
- SARS-CoV-2, specifically the N501Y mutant spike protein, may negatively affect oocyte maturation.
- These findings suggest a potential risk to female fertility and the success of assisted reproduction technologies.
- Further research is needed to confirm these effects in human oocytes and inform reproductive health strategies during the pandemic.
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