A population of Vasa2 and Piwi1 expressing cells generates germ cells and neurons in a sea anemone

Paula Miramón-Puértolas, Eudald Pascual-Carreras and Patrick R. H. Steinmetz ()
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Paula Miramón-Puértolas: University of Bergen
Eudald Pascual-Carreras: University of Bergen
Patrick R. H. Steinmetz: University of Bergen

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract Germline segregation, essential for protecting germ cells against mutations, occurs during early embryogenesis in vertebrates, insects and nematodes. Highly regenerative animals (e.g., cnidarians), however, retain stem cells with both germinal and somatic potentials throughout adulthood, but their biology and evolution remain poorly understood. Among cnidarians (e.g., sea anemones, jellyfish), stem cells are only known in few hydrozoans (e.g., Hydra). Here, we identify and characterize a rare, multipotent population of stem and/or progenitor cells expressing the conserved germline and multipotency proteins Vasa2 and Piwi1 in the sea anemone Nematostella vectensis. Using piwi1 and vasa2 transgenic reporter lines, we reveal that the Vasa2+/Piwi1+ cell population generates not only gametes, but also a diversity of proliferative somatic cells, including neural progenitors, in juveniles and adults. Our work has uncovered a multipotent population of Vasa2+/Piwi1+ stem/progenitor cells that forms the cellular basis to understand body plasticity and regenerative capacities in sea anemones and corals.

Date: 2024
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DOI: 10.1038/s41467-024-52806-4

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