IL-17C expression and its correlation with pediatric adenoids: a preliminary study
- Authors
- Min, Hyun Jin; Kim, Kyung Soo
- Issue Date
- Sep-2020
- Publisher
- IVYSPRING INT PUBL
- Keywords
- adenoids; IL-17C; IL-17RE; Hsp70; innate immunity
- Citation
- INTERNATIONAL JOURNAL OF MEDICAL SCIENCES, v.17, no.17, pp 2603 - 2610
- Pages
- 8
- Journal Title
- INTERNATIONAL JOURNAL OF MEDICAL SCIENCES
- Volume
- 17
- Number
- 17
- Start Page
- 2603
- End Page
- 2610
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/47731
- DOI
- 10.7150/ijms.49244
- ISSN
- 1449-1907
- Abstract
- Objective: Interleukin-17 (IL-17) C is a cytokine expressed by epithelial cells in response to bacterial stimulation. In contrast to other members of the IL-17 family of cytokines, IL-17C is upregulated early during infection, maintains integrity of the epithelial layer barrier, and mediates the innate immune response. We investigated the expression profile of IL-17C in pediatric adenoids. Methods: Pediatric adenoid tissues and lavage fluids were collected from a total of 38 subjects. The Limulus amebocyte lysate test and real-time PCR using Staphylococcus aureus primers were performed to evaluate bacterial contents in adenoids. Expression of IL-17RE in adenoids was analyzed using real-time polymerase chain reaction and western blot. The expression of IL-17C was evaluated by western blot and immunohistochemistry and compared between allergic rhinitis (AR) and control subjects. The levels of Hsp27, Hsp70, and IL-17C in adenoid lavage fluids were evaluated by enzyme-linked immunosorbent assay, and the correlation between these molecules was statistically analyzed. Results: The pediatric adenoids were found to be exposed to bacteria and had a normal flora comprising both gram-negative and -positive bacteria. IL-17RE, an IL-17C specific receptor, was highly expressed in the epithelium of adenoids. IL-17C was expressed in all evaluated adenoid tissue samples, irrespective of the allergic status of the patient. IL-17C secretion was detected in half of the adenoid lavage fluid samples and was associated with Hsp70 level. Conclusion: Our findings indicate the possible role of pediatric adenoids in innate immunity modulation via an innate immunity-associated cytokine.
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