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DCAF13 Promotes Pluripotency by Negatively Regulating SUV39H1 Stability During Early Embryonic Development

DCAF13 Promotes Pluripotency by Negatively Regulating SUV39H1 Stability During Early Embryonic Development

Yin-Li Zhang, Long-Wen Zhao, Jue Zhang, Rongrong Le, Shu-Yan Ji, Chuan Chen, Yawei Gao, Dali Li, Shaorong Gao, Heng-Yu Fan

EMBO J. 2018 Sep 14;37(18):e98981.

PMID: 30111536

Abstract:

Mammalian oocytes and zygotes have the unique ability to reprogram a somatic cell nucleus into a totipotent state. SUV39H1/2-mediated histone H3 lysine-9 trimethylation (H3K9me3) is a major barrier to efficient reprogramming. How SUV39H1/2 activities are regulated in early embryos and during generation of induced pluripotent stem cells (iPSCs) remains unclear. Since expression of the CRL4 E3 ubiquitin ligase in oocytes is crucial for female fertility, we analyzed putative CRL4 adaptors (DCAFs) and identified DCAF13 as a novel CRL4 adaptor that is essential for preimplantation embryonic development. Dcaf13 is expressed from eight-cell to morula stages in both murine and human embryos, and Dcaf13 knockout in mice causes preimplantation-stage mortality. Dcaf13 knockout embryos are arrested at the eight- to sixteen-cell stage before compaction, and this arrest is accompanied by high levels of H3K9me3. Mechanistically, CRL4-DCAF13 targets SUV39H1 for polyubiquitination and proteasomal degradation and therefore facilitates H3K9me3 removal and zygotic gene expression. Taken together, CRL4-DCAF13-mediated SUV39H1 degradation is an essential step for progressive genome reprogramming during preimplantation embryonic development.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42416094	SUV39H1 human			Price

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