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Induction of Meiosis from Human Pluripotent Stem Cells

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Journal bioRxiv
Date 2024 Jun 10
PMID 38854076
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Abstract

An model of human meiosis would accelerate research into this important reproductive process and development of therapies for infertility. We have developed a method to induce meiosis starting from male or female human pluripotent stem cells. We demonstrate that DNMT1 inhibition, retinoid signaling activation, and overexpression of regulatory factors (anti-apoptotic BCL2, and pro-meiotic HOXB5, BOLL, or MEIOC) rapidly activates meiosis, with leptonema beginning at 6 days, zygonema at 9 days, and pachynema at 12 days. Immunofluorescence microscopy shows key aspects of meiosis, including chromosome synapsis and sex body formation. The meiotic cells express genes similar to meiotic oogonia , including all synaptonemal complex components and machinery for meiotic recombination. These findings establish an accessible system for inducing human meiosis .

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