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Metabolic Reprogramming of Iron Endows the Function of ISCA2-TET Interaction During Peri-implantation Development

GSE275340 Mus musculus Expression profiling by high throughput sequencing 8 samples Submitted 2024/08/27 Platform GPL34328
Summary
Metabolic reprogramming plays important roles in embryo development. However, the metabolic network has still not been systematically investigated during the processes. In this study, we develop MFE, a metabolites flux estimation tool, to predict metabolite abundances and their regulons, highlighting the role of Fe(II) and its regulon-ISCA2, in the inner cell mass (ICM) of human and mouse blastocysts. By introducing Isca2-/-, Isca2G77S/G77S and Isca2C144S/C144S mice, we find ISCA2 binding with iron, but not Fe-S cluster, is indispensable for mouse peri-implantation development. Mechanistically, nuclear ISCA2 interacts with TET, and Fe(II) is important for the interaction by triggering the enzymatic activity of TET. The partnership safeguards promoters of epiblast-specific genes from hypermethylation and is essential for epiblast development in mouse peri-implantation embryos. The study provides insights into how iron metabolism modulates embryo development, and suggests a manner of Fe(II)-dependentenzymes to achieve activity under physiological conditions.
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Also filed as BioProject PRJNA1150498 and SRA study SRP527730. Searching any of these in the dataset finder brings you back here.

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