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Coxsackievirus A10 Impairs Nail Regeneration and Induces Onychomadesis by Mimicking DKK1 to Attenuate Wnt Signaling

Abstract

Coxsackievirus A10 (CV-A10) infection, a prominent cause of childhood hand-foot-and-mouth disease (HFMD), frequently manifests with the intriguing phenomenon of onychomadesis, characterized by nail shedding. However, the underlying mechanism is elusive. Here, we found that CV-A10 infection in mice could suppress Wnt/β-catenin signaling by restraining LDL receptor-related protein 6 (LRP6) phosphorylation and β-catenin accumulation and lead to onychomadesis. Mechanistically, CV-A10 mimics Dickkopf-related protein 1 (DKK1) to interact with Kringle-containing transmembrane protein 1 (KRM1), the CV-A10 cellular receptor. We further found that Wnt agonist (GSK3β inhibitor) CHIR99021 can restore nail stem cell differentiation and protect against nail shedding. These findings provide novel insights into the pathogenesis of CV-A10 and related viruses in onychomadesis and guide prognosis assessment and clinical treatment of the disease.

References
1.
Kobayashi M, Makino T, Hanaoka N, Shimizu H, Enomoto M, Okabe N . Clinical manifestations of coxsackievirus A6 infection associated with a major outbreak of hand, foot, and mouth disease in Japan. Jpn J Infect Dis. 2013; 66(3):260-1. DOI: 10.7883/yoken.66.260. View

2.
Cui P, Li Y, Zhou C, Zhou Y, Song C, Qiu Q . [Clinical analysis of 555 outpatients with hand, foot and mouth diseases caused by different enteroviruses]. Zhonghua Er Ke Za Zhi. 2019; 57(6):445-451. DOI: 10.3760/cma.j.issn.0578-1310.2019.06.009. View

3.
Navarro Moreno E, Almagro Lopez D, Jaldo Jimenez R, Del Moral Campana M, Arbol Fernandez G, Perez Ruiz M . [Outbreak of hand, foot and mouth disease with onychomadesis caused by Coxsackie virus A16 in Granada]. An Pediatr (Barc). 2014; 82(4):235-41. DOI: 10.1016/j.anpedi.2014.05.015. View

4.
Osterback R, Vuorinen T, Linna M, Susi P, Hyypia T, Waris M . Coxsackievirus A6 and hand, foot, and mouth disease, Finland. Emerg Infect Dis. 2009; 15(9):1485-8. PMC: 2819858. DOI: 10.3201/eid1509.090438. View

5.
Blaydon D, Ishii Y, OToole E, Unsworth H, Teh M, Ruschendorf F . The gene encoding R-spondin 4 (RSPO4), a secreted protein implicated in Wnt signaling, is mutated in inherited anonychia. Nat Genet. 2006; 38(11):1245-7. DOI: 10.1038/ng1883. View