Visualization of phagosomal hydrogen peroxide production by a novel fluorescent probe that is localized via SNAP-tag labeling

Masahiro Abo, Reiko Minakami, Kei Miyano, Mako Kamiya, Tetsuo Nagano, Yasuteru Urano, Hideki Sumimoto

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Hydrogen peroxide (H2O2), a member of reactive oxygen species (ROS), plays diverse physiological roles including host defense and cellular signal transduction. During ingestion of invading microorganisms, professional phagocytes such as macrophages release H2O2 specifically into the phagosome to direct toxic ROS toward engulfed microbes. Although H2O2 is considered to exert discrete effects in living systems depending on location of its production, accumulation, and consumption, there have been limitations of techniques for probing this oxygen metabolite with high molecular specificity at the subcellular resolution. Here we describe the development of an O6-benzylguanine derivative of 5-(4-nitrobenzoyl)carbonylfluorescein (NBzF-BG), a novel H2O 2-specific fluorescent probe; NBzF-BG is covalently and selectively conjugated with the SNAP-tag protein, leading to formation of the fluorophore-protein conjugate (SNAP-NBzF). SNAP-NBzF rapidly reacts with H 2O2 and thereby shows a 9-fold enhancement in fluorescence. When SNAP-tag is expressed in HEK293T cells and RAW264.7 macrophages as a protein C-terminally fused to the transmembrane domain of platelet-derived growth factor receptor (PDGFR), the tag is presented on the outside of the plasma membrane; conjugation of NBzF-BG with the cell surface SNAP-tag enables detection of H2O2 added exogenously. We also demonstrate molecular imaging of H2O2 that is endogenously produced in phagosomes of macrophages ingesting IgG-coated latex beads. Thus, NBzF-BG, combined with the SNAP-tag technology, should be useful as a tool to measure local production of H2O2 in living cells.

Original languageEnglish
Pages (from-to)5983-5990
Number of pages8
JournalAnalytical chemistry
Volume86
Issue number12
DOIs
Publication statusPublished - Jun 17 2014

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Macrophages
Fluorescent Dyes
Labeling
Hydrogen Peroxide
Phagosomes
Visualization
Reactive Oxygen Species
Molecular imaging
Platelet-Derived Growth Factor Receptors
Signal transduction
Molecular Imaging
Fluorophores
Poisons
Latex
Cell membranes
Phagocytes
Metabolites
Protein C
Microspheres
Microorganisms

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

Cite this

Visualization of phagosomal hydrogen peroxide production by a novel fluorescent probe that is localized via SNAP-tag labeling. / Abo, Masahiro; Minakami, Reiko; Miyano, Kei; Kamiya, Mako; Nagano, Tetsuo; Urano, Yasuteru; Sumimoto, Hideki.

In: Analytical chemistry, Vol. 86, No. 12, 17.06.2014, p. 5983-5990.

Research output: Contribution to journalArticle

Abo, Masahiro ; Minakami, Reiko ; Miyano, Kei ; Kamiya, Mako ; Nagano, Tetsuo ; Urano, Yasuteru ; Sumimoto, Hideki. / Visualization of phagosomal hydrogen peroxide production by a novel fluorescent probe that is localized via SNAP-tag labeling. In: Analytical chemistry. 2014 ; Vol. 86, No. 12. pp. 5983-5990.
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