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Comparative Study
. 2025 Feb 6;188(3):814-831.e21.
doi: 10.1016/j.cell.2024.12.028. Epub 2025 Jan 23.

Comparative proteomic landscapes elucidate human preimplantation development and failure

Affiliations
Comparative Study

Comparative proteomic landscapes elucidate human preimplantation development and failure

Wencheng Zhu et al. Cell. .

Abstract

Understanding mammalian preimplantation development, particularly in humans, at the proteomic level remains limited. Here, we applied our comprehensive solution of ultrasensitive proteomic technology to measure the proteomic profiles of oocytes and early embryos and identified nearly 8,000 proteins in humans and over 6,300 proteins in mice. We observed distinct proteomic dynamics before and around zygotic genome activation (ZGA) between the two species. Integrative analysis with translatomic data revealed extensive divergence between translation activation and protein accumulation. Multi-omic analysis indicated that ZGA transcripts often contribute to protein accumulation in blastocysts. Using mouse embryos, we identified several transcriptional regulators critical for early development, thereby linking ZGA to the first lineage specification. Furthermore, single-embryo proteomics of poor-quality embryos from over 100 patient couples provided insights into preimplantation development failure. Our study may contribute to reshaping the framework of mammalian preimplantation development and opening avenues for addressing human infertility.

Keywords: ZGA; human preimplantation development; multi-omic analysis; poor-quality embryo; ultrasensitive proteomics.

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Conflict of interest statement

Declaration of interests Z. Li, Y. Shen, J.Z., and H.Z. are employees of Shanghai Applied Protein Technology Co., Ltd., Shanghai, P.R. China.

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