Photodynamic Physiology-Photonanomanipulations in Cellular Physiology with Protein Photosensitizers.

Abstract:

:Singlet oxygen generated in a type II photodynamic action, due to its limited lifetime (1 μs) and reactive distance (<10 nm), could regulate live cell function nanoscopically. The genetically-encoded protein photosensitizers (engineered fluorescent proteins such as KillerRed, TagRFP, and flavin-binding proteins such as miniSOG, Pp2FbFPL30M) could be expressed in a cell type- and/or subcellular organelle-specific manner for targeted protein photo-oxidative activation/desensitization. The newly emerged active illumination technique provides an additional level of specificity. Typical examples of photodynamic activation include permanent activation of G protein-coupled receptor CCK1 and photodynamic activation of ionic channel TRPA1. Protein photosensitizers have been used to photodynamically modulate major cellular functions (such as neurotransmitter release and gene transcription) and animal behavior. Protein photosensitizers are increasingly used in photon-driven nanomanipulation in cell physiology research.

journal_name

Front Physiol

journal_title

Frontiers in physiology

authors

Jiang HN,Li Y,Cui ZJ

doi

10.3389/fphys.2017.00191

subject

Has Abstract

pub_date

2017-04-04 00:00:00

pages

191

issn

1664-042X

journal_volume

8

pub_type

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