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Abstract
A substantial proportion of transcriptionally active cis-regulatory elements in primate embryos originated from ancient retroviral integrations into the germline.
- Endogenous retroviruses may retain intrinsic regulatory activity and could influence species-specific aspects of embryonic development.
- Ethical restrictions on human embryo research have limited direct studies of gene regulation during human embryogenesis.
- Human naive pluripotent stem cells and three-dimensional blastocyst models offer alternative systems for investigating early developmental processes.
- CRISPR-Cas9 technology can be used to delete retrovirus-derived cis-regulatory elements in human naive pluripotent stem cells.
- The method allows for the creation of various deletion clones to study the role of individual retrovirus-derived elements in gene regulation.
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