Transit of H2O2 across the endoplasmic reticulum membrane is not sluggish

Transit of H2O2 across the endoplasmic reticulum membrane is not sluggish

Appenzeller-Herzog, Christian; Bánhegyi, Gábor; Bogeski, Iván; Davies, Kelvin JA; Delaunay-Moisan, Ágnes; Henry, Jay Forman; Ágnes, Görlach; Thomas, Kietzmann; Francisco, Laurindo; Margittai, Éva; Andreas, J Meyer; Jan, Riemer; Michael, Rützler; Thomas, Simmen; Roberto, Sitia; Michel, B Toledano; Ivo, P Touw

Folyóiratcikk

FREE RADICAL BIOLOGY AND MEDICINE vol.:94, p.:157-160.

ISSN: 0891-5849

URI: http://repo.lib.semmelweis.hu//handle/123456789/3351
https://doi.org/10.1016/j.freeradbiomed.2016.02.030

MTMT azonosító: 3049296

Megjelenés éve: 2016

Kivonat:

Cellular metabolism provides various sources of hydrogen peroxide (H2O2) in different organelles and compartments. The suitability of H2O2 as an intracellular signaling molecule therefore also depends on its ability to pass cellular membranes. The propensity of the membranous boundary of the endoplasmic reticulum (ER) to let pass H2O2 has been discussed controversially. In this essay, we challenge the recent proposal that the ER membrane constitutes a simple barrier for H2O2 diffusion and support earlier data showing that (i) ample H2O2 permeability of the ER membrane is a prerequisite for signal transduction, (ii) aquaporin channels are crucially involved in the facilitation of H2O2 permeation, and (iii) a proper experimental framework not prone to artifacts is necessary to further unravel the role of H2O2 permeation in signal transduction and organelle biology. © 2016 Elsevier Inc.

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