Loss of UBE2S causes meiosis I arrest with normal spindle assembly checkpoint dynamics in mouse oocytes
© 2024. Published by The Company of Biologists Ltd..
The timely degradation of proteins that regulate the cell cycle is essential for oocyte maturation. Oocytes are equipped to degrade proteins via the ubiquitin-proteasome system. In meiosis, anaphase promoting complex/cyclosome (APC/C), an E3 ubiquitin-ligase, is responsible for the degradation of proteins. Ubiquitin-conjugating enzyme E2 S (UBE2S), an E2 ubiquitin-conjugating enzyme, delivers ubiquitin to APC/C. APC/C has been extensively studied, but the functions of UBE2S in oocyte maturation and mouse fertility are not clear. In this study, we used Ube2s knockout mice to explore the role of UBE2S in mouse oocytes. Ube2s-deleted oocytes were characterized by meiosis I arrest with normal spindle assembly and spindle assembly checkpoint dynamics. However, the absence of UBE2S affected the activity of APC/C. Cyclin B1 and securin are two substrates of APC/C, and their levels were consistently high, resulting in the failure of homologous chromosome separation. Unexpectedly, the oocytes arrested in meiosis I could be fertilized and the embryos could become implanted normally, but died before embryonic day 10.5. In conclusion, our findings reveal an indispensable regulatory role of UBE2S in mouse oocyte meiosis and female fertility.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:151 |
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| Enthalten in: |
Development (Cambridge, England) - 151(2024), 6 vom: 15. März |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Sun, Si-Min [VerfasserIn] |
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| Links: |
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| Themen: |
APC/C |
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| Anmerkungen: |
Date Completed 29.03.2024 Date Revised 02.04.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1242/dev.202285 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 245 | 1 | 0 | |a Loss of UBE2S causes meiosis I arrest with normal spindle assembly checkpoint dynamics in mouse oocytes |
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| 520 | |a The timely degradation of proteins that regulate the cell cycle is essential for oocyte maturation. Oocytes are equipped to degrade proteins via the ubiquitin-proteasome system. In meiosis, anaphase promoting complex/cyclosome (APC/C), an E3 ubiquitin-ligase, is responsible for the degradation of proteins. Ubiquitin-conjugating enzyme E2 S (UBE2S), an E2 ubiquitin-conjugating enzyme, delivers ubiquitin to APC/C. APC/C has been extensively studied, but the functions of UBE2S in oocyte maturation and mouse fertility are not clear. In this study, we used Ube2s knockout mice to explore the role of UBE2S in mouse oocytes. Ube2s-deleted oocytes were characterized by meiosis I arrest with normal spindle assembly and spindle assembly checkpoint dynamics. However, the absence of UBE2S affected the activity of APC/C. Cyclin B1 and securin are two substrates of APC/C, and their levels were consistently high, resulting in the failure of homologous chromosome separation. Unexpectedly, the oocytes arrested in meiosis I could be fertilized and the embryos could become implanted normally, but died before embryonic day 10.5. In conclusion, our findings reveal an indispensable regulatory role of UBE2S in mouse oocyte meiosis and female fertility | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a APC/C | |
| 650 | 4 | |a Meiosis I arrest | |
| 650 | 4 | |a Mouse oocytes | |
| 650 | 4 | |a SAC | |
| 650 | 4 | |a UBE2S | |
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| 650 | 7 | |a Ube2s protein, mouse |2 NLM | |
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| 700 | 1 | |a Zhao, Bing-Wang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Yuan-Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Hong-Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Yuan-Hong |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Xue-Mei |e verfasserin |4 aut | |
| 700 | 1 | |a Guo, Jia-Ni |e verfasserin |4 aut | |
| 700 | 1 | |a Ouyang, Ying-Chun |e verfasserin |4 aut | |
| 700 | 1 | |a Weng, Chang-Jiang |e verfasserin |4 aut | |
| 700 | 1 | |a Guan, Yi-Chun |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Qing-Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Zhen-Bo |e verfasserin |4 aut | |
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