Oxidative activation of type III CD38 by NADPH oxidase–derived hydrogen peroxide in Ca2+ signaling

Dae Ryoung Park, Tae Sik Nam, Ye Won Kim, Yun Soo Bae, Uh Hyun Kim

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Reactive oxygen species (ROS) derived from NADPH oxidase (Nox) has been shown to activate ADP-ribosyl cyclase (ARC), which produces the Ca2+ mobilizing second messenger, cyclic ADP-ribose (cADPR). In the present study, we examined how ROS activates cluster of differentiation (CD)38, a mammalian prototype of ARC. CD38 exists in type II and III forms with opposing membrane orientation. This study showed the coexpression of type II and III CD38 in lymphokine-activated killer (LAK) cells. The catalytic site of the constitutively active type II CD38 faces the outside of the cell or the inside of early endosomes (EEs), whereas the basally inactive type III CD38 faces the cytosol. Type III CD38 interacted with Nox4/phosphorylated-p22phox (p-p22phox) in EEs of LAK cells upon IL-8 treatment. H2O2 derived from Nox4 activated type III CD38 by forming a disulfide bond between Cys164 and Cys177, resulting in increased cADPR formation. Our study identified the mechanism by which type III CD38 is activated in an immune cell (LAK), in which H2O2 generated by Nox4 oxidizes and activates type III CD38 to generate cADPR. These findings provide a novel model of cross-talk between ROS and Ca2+ signaling.—Park, D.-R., Nam, T.-S., Kim, Y.-W., Bae, Y. S., Kim, U.-H. Oxidative activation of type III CD38 by NADPH oxidase–derived hydrogen peroxide in Ca2+ signaling. FASEB J. 33, 3404–3419 (2019). www.fasebj.org.

Original languageEnglish
Pages (from-to)3404-3419
Number of pages16
JournalFASEB Journal
Volume33
Issue number3
DOIs
StatePublished - 1 Mar 2019

Keywords

  • ADP-ribosyl cyclase
  • cADPR
  • LAK cells
  • Nox4
  • ROS

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