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Updated: Jan 29, 2026

Transcriptome Profiling of In-Vivo Produced Bovine Pre-implantation Embryos Using Two-color Microarray Platform
Published on: January 30, 2017
Endogenous Retroviruses Function as Gene Expression Regulatory Elements During Mammalian Pre-implantation Embryo
Bo Fu1,2, Hong Ma3,4, Di Liu5,6
1Institute of Animal Husbandry Research, HeiLongJiang Academy of Agricultural Sciences, Harbin 150086, China. fubohao810@163.com.
Endogenous retroviruses (ERVs) play a crucial role in zygotic genome activation (ZGA) during early embryo development. Understanding ERV regulation may unlock solutions for somatic cell nuclear transfer (SCNT) embryo developmental failures.
Area of Science:
- Developmental Biology
- Genomics
- Epigenetics
Background:
- Endogenous retroviruses (ERVs) were once dismissed as
Purpose of the Study:
- Investigate the role of ERVs in pre-implantation embryo development.
- Explore the connection between ERV activation and zygotic genome activation (ZGA).
- Shed light on developmental failures in somatic cell nuclear transfer (SCNT) embryos.
Main Methods:
- Analysis of ERV transcriptional activation during ZGA.
- Examination of ERV-mediated gene expression rewiring.
- Study of host-virus interplay in ERV repression and activation.
Main Results:
- ERV transcriptional activation coincides with ZGA, marking the shift to zygotic control.
- ERVs are involved in epigenetic reprogramming and gene expression network modification.
- A delicate balance between ERV activation and repression dictates stage-specific expression.
Conclusions:
- ERVs are integral to conserved developmental processes like ZGA.
- Understanding ERV regulatory mechanisms is key to addressing SCNT embryo developmental issues.
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