Chemokine-dependent T cell migration requires aquaporin-3-mediated hydrogen peroxide uptake

Mariko Hara-Chikuma, Shunsuke Chikuma, Yoshinori Sugiyama, Kenji Kabashima, Alan S. Verkman, Shintaro Inoue, Yoshiki Miyachi

Research output: Contribution to journalArticlepeer-review

133 Citations (Scopus)


Chemokine-dependent trafficking is indispensable for the effector function of antigenexperienced T cells during immune responses. In this study, we report that the water/glycerol channel aquaporin-3 (AQP3) is expressed on T cells and regulates their trafficking in cutaneous immune reactions. T cell migration toward chemokines is dependent on AQP3-mediated hydrogen peroxide (H2O2) uptake but not the canonical water/glycerol transport. AQP3-mediated H2O2 transport is essential for the activation of the Rho family GTPase Cdc42 and the subsequent actin dynamics. Coincidentally, AQP3-deficient mice are defective in the development of hapten-induced contact hypersensitivity, which is attributed to the impaired trafficking of antigen-primed T cells to the hapten-challenged skin. We therefore suggest that AQP3-mediated H2O2 uptake is required for chemokine-dependent T cell migration in sufficient immune response.

Original languageEnglish
Pages (from-to)1743-1752
Number of pages10
JournalJournal of Experimental Medicine
Issue number10
Publication statusPublished - 2012 Sept
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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