The Role of SREC-Ⅰ in Innate Immunity to Aspergillus fumigatus Keratitis.

Autor:	Zhang R; Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China., Peng X; Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China., Lin J; Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China., Zhang Y; Department of Biochemistry, Microbiology and Immunology, Wayne State University School of Medicine, Detroit, Michigan, United States., Zhan L; Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China., Tian X; Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China., Yin J; Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China., Zhao G; Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
Jazyk:	angličtina
Zdroj:	Investigative ophthalmology & visual science [Invest Ophthalmol Vis Sci] 2021 Jul 01; Vol. 62 (9), pp. 12.
DOI:	10.1167/iovs.62.9.12
Abstrakt:	Purpose: To determine the role of scavenger receptor expressed by endothelial cell-1 (SREC-Ⅰ) in vitro and in a mouse model of Aspergillus fumigatus keratitis. Methods: SREC-Ⅰ mRNA and protein expression were tested in both normal and A fumigatus stimulated human corneal epithelial cells (HCECs). Immunofluorescence was used to detect SREC-Ⅰ expression in human corneas with or without A fumigatus infection. HCECs were incubated with SREC-Ⅰ small interfering RNA, then the mRNA levels of LOX-1, IL-1β, and TNF-α were detected after A fumigatus stimulation. A mouse fungal keratitis (FK) model was established and SREC-Ⅰ mRNA and protein expression were detected by RT-PCR, Western blot and immunofluorescence. The severity of FK was evaluated by clinical score. CLCX1, LOX-1, IL-1β, and TNF-α mRNA expression levels were tested before and after anti-SREC-Ⅰ treatment. Results: SREC-Ⅰ expressed in normal and A fumigatus treated HCECs and human corneal epithelium. In vitro experiment showed that SREC-Ⅰ mRNA and protein levels were significantly increased after A fumigatus stimulation. SREC-Ⅰ small interfering RNA treatment inhibited the expressions of LOX-1, IL-1β, and TNF-α in HCECs. The expressions of CLCX1, LOX-1, IL-1β, and TNF-α were elevated in mice with A fumigatus keratitis, which could be decreased by SREC-Ⅰ-neutralizing antibody treatment. Conclusions: SREC-Ⅰ is a key mediator in inflammatory response induced by A fumigatus keratitis. SREC-Ⅰ blockade could be a potential therapeutic approach for FK.
Databáze:	MEDLINE
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