Abstract:
:Integrin-α9 (ITGA9) and its corresponding ligands are involved in inflammatory and immune responses. The present study aimed to investigate whether ITGA9 participates in the development of chronic periodontitis (ChP) and to explore the underlying mechanisms. We collected gingival tissue and gingival crevicular fluid in vivo from patients to determine the levels of ITGA9 and its ligands. We cultured primary periodontal ligament cells (PDLCs) in vitro and applied small interfering RNA to knock down ITGA9 in order to analyze the changes of inflammatory cytokines and explore the related cellular signaling pathways. The expression level of ITGA9 was significantly higher in the gingiva of patients with ChP than that of healthy individuals. ITGA9 knockdown in the PDLCs inhibited the secretion of interleukin (IL)-1β, IL-6, and IL-8. Western blot analysis indicated that this change could be attributed to the regulation of the mitogen-activated protein kinase (MAPK) signaling pathway. ITGA9 plays a regulatory role in the homeostasis of ChP. The results of the present study provide potential insights into the treatment of periodontitis. Graphical abstract.
journal_name
Inflammationjournal_title
Inflammationauthors
Xu S,Jiang C,Liu H,Zhang H,Liao H,Wang X,Yao S,Ma L,Guo Y,Cao Zdoi
10.1007/s10753-020-01226-9subject
Has Abstractpub_date
2020-08-01 00:00:00pages
1488-1497issue
4eissn
0360-3997issn
1573-2576pii
10.1007/s10753-020-01226-9journal_volume
43pub_type
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