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Somatic PMK-1/p38 signaling links environmental stress to germ cell apoptosis and heritable euploidy

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  • Najmeh Soltanmohammadi

    (University Hospital and University of Cologne
    University of Cologne)

  • Siyao Wang

    (University Hospital and University of Cologne
    University of Cologne)

  • Björn Schumacher

    (University Hospital and University of Cologne
    University of Cologne)

Abstract

Inheritance of stable and euploid genomes is a prerequisite for species maintenance. The DNA damage response in germ cells controls the integrity of heritable genomes. Whether and how somatic stress responses impact the quality control of germline genomes has remained unclear. Here, we show that PMK-1/p38-mediated stress signaling in intestinal cells is required for germ cell apoptosis amid ionizing radiation (IR)-induced or meiotic DNA double strand breaks (DSBs) in C. elegans. We demonstrate that intestinal PMK-1/p38 signaling regulates the germ cell death in response to environmental stress. The PMK-1/p38 target SYSM-1 is secreted from the intestine into the germline to trigger apoptosis of meiotic pachytene cells. Compromised PMK-1/p38 signaling in intestinal cells leads to stress-induced aneuploidy in the consequent generation. Our data suggest that somatic stress surveillance controls heritable genome integrity and euploidy.

Suggested Citation

  • Najmeh Soltanmohammadi & Siyao Wang & Björn Schumacher, 2022. "Somatic PMK-1/p38 signaling links environmental stress to germ cell apoptosis and heritable euploidy," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28225-8
    DOI: 10.1038/s41467-022-28225-8
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