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Autophagy in UV Damage Response
Author(s) -
Sample Ashley,
He YuYing
Publication year - 2017
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12691
Subject(s) - autophagy , photoaging , dna damage , microbiology and biotechnology , carcinogenesis , apoptosis , skin cancer , dna repair , programmed cell death , signal transduction , bystander effect , biology , chemistry , cancer research , cancer , dna , immunology , biochemistry , genetics
UV radiation exposure from sunlight and artificial tanning beds is the major risk factor for the development of skin cancer and skin photoaging. UV ‐induced skin damage can trigger a cascade of DNA damage response signaling pathways, including cell cycle arrest, DNA repair and, if damage is irreparable, apoptosis. Compensatory proliferation replaces the apoptotic cells to maintain skin barrier integrity. Disruption of these processes can be exploited to promote carcinogenesis by allowing the survival and proliferation of damaged cells. UV radiation also induces autophagy, a catabolic process that clears unwanted or damaged proteins, lipids and organelles. The mechanisms by which autophagy is activated following UV exposure, and the functions of autophagy in UV response, are only now being clarified. Here, we summarize the current understanding of the mechanisms governing autophagy regulation by UV , the roles of autophagy in regulating cellular response to UV ‐induced photodamage and the implications of autophagy modulation in the treatment and prevention of photoaging and skin cancer.