Wu H, Shen J, Liu L, Lu X, Xue J. Vasoactive intestinal peptide-induced tolerogenic dendritic cells attenuated arthritis in experimental collagen-induced arthritic mice.
Int J Rheum Dis 2019;
22:1255-1262. [PMID:
31062502 DOI:
10.1111/1756-185x.13578]
[Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 12/14/2018] [Accepted: 03/05/2019] [Indexed: 12/13/2022]
Abstract
AIM
Cumulative evidence has revealed that tolerogenic dendritic cells (tolDC) could relieve inflammation reactions in various autoimmune diseases. This study investigated the potential therapeutic application of vasoactive intestinal peptide (VIP)-induced tolDC (VIP-DC) on arthritis using collagen-induced arthritis (CIA) mice.
METHODS
Bone marrow cells were differentiated into dendritic cells (DC) using granulocyte macrophage colony-stimulating factor and interleukin (IL)-4. tolDC were induced by either VIP or Bay 11-7082 in vitro. Immunophenotypes and cytokine production of VIP-DC and Bay-DC were detected by fluorescence-activated cell sorting and enzyme-linked immunosorbent assay, respectively. Bay-DC, VIP-DC and untreated DC were ip administrated to CIA mice on day 40 when arthritis was onset. The treatment effects on arthritic and pathological changes, including synovial hyperplasia, pannus formation, inflammation and bone erosion, were assessed.
RESULTS
VIP-DC (40 ng/mL) and Bay-DC (0.5 µg/mL) had a lower level of major histocompatibility complex II, CD40 and CD86 expression, reduced γ-interferon and increased IL-4 production (P < 0.05 or 0.01), compared with untreated DC. The administration of VIP-DC and Bay-DC decreased the arthritis score clinically at the end of the therapy. Pathological assessments showed that bone erosion and inflammation were alleviated in the VIP-DC group compared with those in the untreated DC group (P < 0.05 and P < 0.01, respectively).
CONCLUSION
VIP-DC showed reduced immunogenicity and enhanced anti-inflammatory cytokine production. Both VIP-DC and Bay-DC could ameliorate arthritis in CIA mice clinically. VIP-DC were not inferior to Bay 11-7082-induced tolDC but may exert a better preventive effect on bone destruction.
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