ELF4 is Critical to Zygotic Gene Activation and Epigenetic Reprogramming During Early Embryonic Development in Pigs

Overview

Journal Front Vet Sci

Specialty Veterinary Medicine

Date 2022 Aug 5

PMID 35928113

Authors

Lijing Shi

Yanhui Zhai

Yuanshen Zhao

Xiangjie Kong

Daoyu Zhang

Hao Yu

Ziyi Li

Affiliations

Soon will be listed here.

Abstract

Zygotic gene activation (ZGA) and epigenetic reprogramming are critical in early embryonic development in mammals, and transcription factors are involved in regulating these events. However, the effects of ELF4 on porcine embryonic development remain unclear. In this study, the expression of ELF4 was detected in early porcine embryos and different tissues. By knocking down ELF4, the changes of H3K9me3 modification, DNA methylation and ZGA-related genes were analyzed. Our results showed that was expressed at all stages of early porcine embryos fertilized (IVF), with the highest expression level at the 8-cell stage. The embryonic developmental competency and blastocyst quality decreased after ELF4 knockdown (20.70% control vs. 17.49% si-scramble vs. 2.40% si-; < 0.001). Knockdown of ELF4 induced DNA damage at the 4-cell stage. Interfering with ELF4 resulted in abnormal increases in H3K9me3 and DNA methylation levels at the 4-cell stage and inhibited the expression of genes related to ZGA. These results suggest that ELF4 affects ZGA and embryonic development competency in porcine embryos by maintaining genome integrity and regulating dynamic changes of H3K9me3 and DNA methylation, and correctly activating ZGA-related genes to promote epigenetic reprogramming. These results provide a theoretical basis for further studies on the regulatory mechanisms of ELF4 in porcine embryos.

Citing Articles

Cumulus Cell and Oocyte Gene Expression in Prepubertal Gilts and Sows Identifies Cumulus Cells as a Prime Informative Parameter of Oocyte Quality.

Haug L, Wilson R, Gaustad A, Jochems R, Kommisrud E, Grindflek E Biology (Basel). 2023; 12(12).

PMID: 38132310 PMC: 10740982. DOI: 10.3390/biology12121484.

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