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- Title
Sirtuin 6 protects human retinal pigment epithelium cells from LPS-induced inflammation and apoptosis partly by regulating autophagy.
- Authors
Liu, Jingjing; Liu, Dan
- Abstract
Lipopolysaccharides (LPS)-induced retinal inflammation is an important factor in retinal diseases. This study was aimed to investigate the effect of Sirt6 on LPS-induced retinal injury. ARPE-19 cells were incubated with LPS to induce inflammation. The cell viability was determined using CCK-8 assay. The mRNA level and protein expression of corresponding genes was detected using qRT-PCR and western blot, respectively. The production of inflammatory cytokines was measured using ELISA kit. The levels of oxidative stress-related factors were measured using their detection kits. Cell apoptosis was observed using TUNEL assay. The results showed that Sirt6 was downregulated after LPS treatment. Sirt6 strengthened LPS-induced autophagy by promoting the expression of LC3II/I, beclin1 and ATG5. Sirt6 treatment significantly inhibited LPS-induced inflammation, oxidative stress and cell apoptosis, which was then partly abolished by 3 MA. These results suggest Sirt6 to be an important regulator for LPS-induced inflammation, oxidative stress, and apoptosis partly by regulating cell autophagy. A schematic model of the role and potential mechanism of Sirt6 in LPS-induced retinal 20 diseases.
- Subjects
BIOLOGICAL pigments; APOPTOSIS; RETINAL diseases; RHODOPSIN; INFLAMMATION; RETINAL injuries
- Publication
Bioscience, Biotechnology & Biochemistry, 2020, Vol 84, Issue 10, p2062
- ISSN
0916-8451
- Publication type
Article
- DOI
10.1080/09168451.2020.1788377