The developmental basis of fingerprint pattern formation and variation

Glover, James D.; Sudderick, Zoe R.; Shih, Barbara Bo-Ju; Batho-Samblas, Cameron; Charlton, Laura; Krause, Andrew L.; Anderson, Calum; Riddell, Jon; Balic, Adam; Li, Jinxi; Klika, Václav; Woolley, Thomas E.; Gaffney, Eamonn A.; Corsinotti, Andrea; Anderson, Richard A.; Johnston, Luke J.; Brown, Sara J.; Wang, Sijia; Chen, Yuhang; Crichton, Michael L.; Headon, Denis J.

Abstract

Fingerprints are complex and individually unique patterns in the skin. Established prenatally, the molecular and cellular mechanisms that guide fingerprint ridge formation and their intricate arrangements are unknown. Here we show that fingerprint ridges are epithelial structures that undergo a truncated hair follicle developmental program and fail to recruit a mesenchymal condensate. Their spatial pattern is established by a Turing reaction-diffusion system, based on signaling between EDAR, WNT, and antagonistic BMP pathways. These signals resolve epithelial growth into bands of focalized proliferation under a precociously differentiated suprabasal layer. Ridge formation occurs as a set of waves spreading from variable initiation sites defined by the local signaling environments and anatomical intricacies of the digit, with the propagation and meeting of these waves determining the type of pattern that forms. Relying on a dynamic patterning system triggered at spatially distinct sites generates the characteristic types and unending variation of human fingerprint patterns.

Citation

Glover, J. D., Sudderick, Z. R., Shih, B. B., Batho-Samblas, C., Charlton, L., Krause, A. L., …Headon, D. J. (2023). The developmental basis of fingerprint pattern formation and variation. Cell, 186(5), 940-956. https://doi.org/10.1016/j.cell.2023.01.015

• Journal Article Type: Article
• Online Publication Date: Feb 9, 2023
• Publication Date: 2023-03
• Deposit Date: Mar 13, 2023
• Publicly Available Date: Mar 13, 2023
• Journal: Cell
• Print ISSN: 0092-8674
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 186
• Issue: 5
• Pages: 940-956
• DOI: https://doi.org/10.1016/j.cell.2023.01.015