| First Author | Wang G | Year | 2021 |
| Journal | Cell Host Microbe | Volume | 29 |
| Issue | 5 | Pages | 777-791.e6 |
| PubMed ID | 33798492 | Mgi Jnum | J:332510 |
| Mgi Id | MGI:6874702 | Doi | 10.1016/j.chom.2021.03.003 |
| Citation | Wang G, et al. (2021) Bacteria induce skin regeneration via IL-1beta signaling. Cell Host Microbe 29(5):777-791.e6 |
| abstractText | Environmental factors that enhance regeneration are largely unknown. The immune system and microbiome are attributed roles in repairing and regenerating structure but their precise interplay is unclear. Here, we assessed the function of skin bacteria in wound healing and wound-induced hair follicle neogenesis (WIHN), a rare adult organogenesis model. WIHN levels and stem cell markers correlate with bacterial counts, being lowest in germ-free (GF), intermediate in conventional specific pathogen-free (SPF), and highest in wild-type mice, even those infected with pathogenic Staphylococcus aureus. Reducing skin microbiota via cage changes or topical antibiotics decreased WIHN. Inflammatory cytokine IL-1beta and keratinocyte-dependent IL-1R-MyD88 signaling are necessary and sufficient for bacteria to promote regeneration. Finally, in a small trial, a topical broad-spectrum antibiotic also slowed skin wound healing in adult volunteers. These results demonstrate a role for IL-1beta to control morphogenesis and support the need to reconsider routine applications of topical prophylactic antibiotics. |
