SoxC and MmpReg promote blastema formation in whole-body regeneration of fragmenting potworms Enchytraeus japonensis

Toshiyuki Fujita, Naoya Aoki, Chihiro Mori, Koichi J. Homma and Shinji Yamaguchi ()
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Toshiyuki Fujita: Teikyo University
Naoya Aoki: Teikyo University
Chihiro Mori: Teikyo University
Koichi J. Homma: Teikyo University
Shinji Yamaguchi: Teikyo University

Nature Communications, 2024, vol. 15, issue 1, 1-18

Abstract: Abstract Regeneration in many animals involves the formation of a blastema, which differentiates and organizes into the appropriate missing body parts. Although the mechanisms underlying blastema formation are often fundamental to regeneration biology, information on the cellular and molecular basis of blastema formation remains limited. Here, we focus on a fragmenting potworm (Enchytraeus japonensis), which can regenerate its whole body from small fragments. We find soxC and mmpReg as upregulated genes in the blastema. RNAi of soxC and mmpReg reduce the number of blastema cells, indicating that soxC and mmpReg promote blastema formation. Expression analyses show that soxC-expressing cells appear to gradually accumulate in blastema and constitute a large part of the blastema. Additionally, similar expression dynamics of SoxC orthologue genes in frog (Xenopus laevis) are found in the regeneration blastema of tadpole tail. Our findings provide insights into the cellular and molecular mechanisms underlying blastema formation across species.

Date: 2024
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DOI: 10.1038/s41467-024-50865-1

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