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Histone Demethylase KDM4D Could Improve the Developmental Competence of Buffalo (Bubalus Bubalis) Somatic Cell Nuclear Transfer (SCNT) Embryos

Published online by Cambridge University Press:  22 January 2021

Yun Feng ,
Xin Zhao ,
Zhengda Li ,
Chan Luo ,
Ziyun Ruan ,
Jie Xu ,
Penglei Shen ,
Yanfei Deng ,
Jianrong Jiang  and
Deshun Shi
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Yun Feng
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Xin Zhao
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China Center of Reproductive Medicine, Guangxi Maternal and Child Health Hospital, Nanning530003, P.R. China
Zhengda Li
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Chan Luo
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Ziyun Ruan
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Jie Xu
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Penglei Shen
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Yanfei Deng
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Jianrong Jiang
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Deshun Shi*
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
Fenghua Lu*
Affiliation:
Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning530005, P.R. China
*
*Author for correspondence: Fenghua Lu and Deshun Shi, E-mail: [email protected] (F. Lu) and [email protected] (D. Shi)
*Author for correspondence: Fenghua Lu and Deshun Shi, E-mail: [email protected] (F. Lu) and [email protected] (D. Shi)
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Abstract

Somatic cell nuclear transfer (SCNT) holds vast potential in agriculture. However, its applications are still limited by its low efficiency. Histone 3 lysine 9 trimethylation (H3K9me3) was identified as an epigenetic barrier for this. Histone demethylase KDM4D could regulate the level of H3K9me3. However, its effects on buffalo SCNT embryos are still unclear. Thus, we performed this study to explore the effects and underlying mechanism of KDM4D on buffalo SCNT embryos. The results revealed that compared with the IVF embryos, the expression level of KDM4D in SCNT embryos was significantly lower at 8- and 16-cell stage, while the level of H3K9me3 in SCNT embryos was significantly higher at 2-cell, 8-cell, and blastocyst stage. Microinjection of KDM4D mRNA could promote the developmental ability of buffalo SCNT embryos. Furthermore, the expression level of ZGA-related genes such as ZSCAN5B, SNAI1, eIF-3a, and TRC at the 8-cell stage was significantly increased. Meanwhile, the pluripotency-related genes like POU5F1, SOX2, and NANOG were also significantly promoted at the blastocyst stage. The results were reversed after KDM4D was inhibited. Altogether, these results revealed that KDM4D could correct the H3K9me3 level, increase the expression level of ZGA and pluripotency-related genes, and finally, promote the developmental competence of buffalo SCNT embryos.

Keywords

buffalohistone demethylationKDM4Dsomatic cell nuclear transfer (SCNT)
Type
Biological Applications
Information
Microscopy and Microanalysis , Volume 27 , Issue 2 , April 2021 , pp. 409 - 419
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of the Microscopy Society of America

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Footnotes

†

Yun Feng and Xin Zhao contributed equally to this work.

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