Staphylococcus cohnii is a potentially biotherapeutic skin commensal alleviating skin inflammation

Yoshihiro Ito, Takashi Sasaki, Youxian Li, Takeshi Tanoue, Yuki Sugiura, Ashwin N. Skelly, Wataru Suda, Yusuke Kawashima, Nobuyuki Okahashi, Eiichiro Watanabe, Hiroto Horikawa, Aiko Shiohama, Rina Kurokawa, Eiryo Kawakami, Hachiro Iseki, Hiroshi Kawasaki, Yoichiro Iwakura, Atsushi Shiota, Liansheng Yu, Junzo HisatsuneHaruhiko Koseki, Motoyuki Sugai, Makoto Arita, Osamu Ohara, Takeshi Matsui, Makoto Suematsu, Masahira Hattori, Koji Atarashi, Masayuki Amagai, Kenya Honda

Research output: Contribution to journalArticlepeer-review


Host-microbe interactions orchestrate skin homeostasis, the dysregulation of which has been implicated in chronic inflammatory conditions such as atopic dermatitis and psoriasis. Here, we show that Staphylococcus cohnii is a skin commensal capable of beneficially inhibiting skin inflammation. We find that Tmem79-/- mice spontaneously develop interleukin-17 (IL-17)-producing T-cell-driven skin inflammation. Comparative skin microbiome analysis reveals that the disease activity index is negatively associated with S. cohnii. Inoculation with S. cohnii strains isolated from either mouse or human skin microbiota significantly prevents and ameliorates dermatitis in Tmem79-/- mice without affecting pathobiont burden. S. cohnii colonization is accompanied by activation of host glucocorticoid-related pathways and induction of anti-inflammatory genes in the skin and is therefore effective at suppressing inflammation in diverse pathobiont-independent dermatitis models, including chemically induced, type 17, and type 2 immune-driven models. As such, S. cohnii strains have great potential as effective live biotherapeutics for skin inflammation.

Original languageEnglish
Pages (from-to)109052
Number of pages1
JournalCell Reports
Issue number4
Publication statusPublished - 2021 Apr 27
Externally publishedYes


  • atopic dermatitis
  • biotherapy
  • psoriasis
  • skin microbiome

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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