4.7 Article

NRF1 promotes primordial germ cell development, proliferation and survival

Journal

CELL PROLIFERATION
Volume -, Issue -, Pages -

Publisher

WILEY
DOI: 10.1111/cpr.13533

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This study demonstrates that the regulator NRF1 plays critical roles in post-migrating primordial germ cell (PGC) development. NRF1 protein level gradually increases in post-migrating PGCs and directly regulates key molecules involved in PGC formation, proliferation, cell cycle, and mitochondrial metabolism. The study also suggests that NRF1 promotes the derivation of PGCs from pluripotent stem cells.
Primordial germ cells (PGCs) are the germline precursors that give rise to oocytes and sperm, ensuring the continuation of life. While the PGC specification is extensively studied, it remains elusive how the PGC population is sustained and expanded after they migrate to embryonic gonads before birth. This study demonstrates that NRF1, a known regulator for mitochondrial metabolism, plays critical roles in post-migrating PGC development. We show that NRF1 protein level gradually increases in post-migrating PGCs during embryonic development. Conditional Nrf1 knockout from embryonic germ cells leads to impaired PGC proliferation and survival. In addition, NRF1 may also actively drive PGC derivation from pluripotent stem cells. Using whole genome transcriptome profiling and ChIP-seq analyses, we further reveal that NRF1 directly regulates key signalling molecules in PGC formation, transcription factors in proliferation and cell cycle and enzymes in mitochondrial metabolism. Overall, our findings highlight an essential requirement of NRF1 in regulating a broad transcriptional network to support post-migrating PGC development both in vitro and in vivo.

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