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IL-33 Is Induced by Amyloid-β Stimulation and Regulates Inflammatory Cytokine Production in Retinal Pigment Epithelium Cells.
MedLine Citation:
PMID:  21898270     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Age-related macular degeneration (AMD) is the predominant cause of irreversible blindness in the elderly population. Despite intensive basic and clinical research, its pathogenesis remains unclear. However, evidence suggests that immunological and inflammatory factors contribute to the pathogenesis of AMD. A newly identified cytokine, IL-33, appears to be an important pro-inflammatory cytokine promoting tissue inflammation. In this study, IL-33 was increased through amyloid-beta(1-40) (Aβ(1-40)) stimulation and regulated inflammatory cytokines including IL-6, IL-8, IL-1β, and TNF-α secretion using different signaling pathways in retinal pigment epithelium (RPE) cells. Furthermore, ST2L, the important component of the IL-33 receptor, was significantly increased following recombinant human IL-33 stimulation in RPE cells. These findings suggest that IL-33-mediated inflammatory responses in RPE cells are involved in the pathogenesis of AMD. Greater understanding of the inflammatory effect of IL-33 and its role in RPE cells should aid the development of future clinical therapeutics and enable novel pharmacological approaches towards the prevention of AMD.
Authors:
Xiao-Cui Liu; Xiao-Fei Liu; Cong-Xiang Jian; Chen-Jun Li; Shou-Zhi He
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-6
Journal Detail:
Title:  Inflammation     Volume:  -     ISSN:  1573-2576     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7600105     Medline TA:  Inflammation     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Ophthalmology, Chinese PLA (People's Liberation Army) General Hospital, 28 Fuxing Road, Beijing, 100853, China.
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