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Dendritic cells treated by Trichinella spiralis muscle larval excretory/secretory products alleviate TNBS-induced colitis in mice

文献类型: 外文期刊

作者: Jin, Xuemin 1 ; Yang, Yong 1 ; Bai, Xue 1 ; Shi, Haining 2 ; Zhang, Wenbao 3 ; Zhang, Zhuangzhi 4 ; Jia, Wanzhong 5 ; Lin 1 ;

作者机构: 1.Jilin Univ, Coll Vet Med, Inst Zoonosis, Key Lab Zoonosis Res,Minist Educ, Changchun, Jilin, Peoples R China

2.Massachusetts Gen Hosp, Pediat Gastroenterol Unit, Mucosal Immunol Lab, Boston, MA 02114 USA

3.Xinjiang Med Univ, Affiliated Hosp 1, Xinjiang, Peoples R China

4.Xinjiang Acad Anim Sci, Xinjiang Vet Res Inst, Xinjiang, Peoples R China

5.Chinese Acad Agr Sci, Lanzhou Vet Res Inst, Lanzhou 730046, Gansu, Peoples R China

6.Chinese Acad Agr Sci, Shanghai Vet Res Inst, Shanghai, Peoples R China

关键词: Trichinella spiralis; Muscle larvae excretory/secretory products; Dendritic cells; TNBS; Colitis; Th2 response; Treg

期刊名称:INTERNATIONAL IMMUNOPHARMACOLOGY ( 影响因子:4.932; 五年影响因子:4.624 )

ISSN: 1567-5769

年卷期: 2019 年 70 卷

页码:

收录情况: SCI

摘要: Background: Therapeutic potential of helminth have been shown to have a protective effect on immune-mediated diseases such as Crohn's disease (CD), which is associated with increased production of T helper cell type 1. However, helminth therapy is unacceptable to patients due to side-effects and the fear of parasites. As helminths regulate the cellular immune responses through innate cells such as dendritic cells (DCs), cellular immunotherapy has been considered a therapeutic option to treat CD. Methods: Bone marrow-dendritic cells were generated, enriched and treated with Trichinella spiralis muscle larval excretory/secretory products (Ts-MLES). DCs maturation was measured by flow cytometry and cytokine production of DCs were measured by ELISA. Colitis was generated by intrarectal administration of 2,4,6-trinitrobenzene sulfonic acid (TNBS) solution. For adoptive transfer, Ts-MLES treated-DCs injected intravenously 24 h prior to TNBS challenge. Disease activity index (DAI) including weight loss, diarrhea, and bloody stool were measured. Colon segments were stained with hematoxylin and eosin (H.E.) and periodic acid schiff (PAS) staining for histological damage scoring. The relative mRNA expression of cytokines in colon was analyzed by RT-PCR. Cytokine production in colon was measured by ELISA. Splenocytes were separated and cytokine profiles including Thl (IFN-gamma), Th2 (IL-4, IL-13), and Treg subsets (IL-10, TGF-beta) were analyzed by flow cytometry. Results: Ts-MLES regulated the maturation and cytokine production of DCs. Ts-MLES-DC ameliorated the severity of the TNBS-induced colitis. In the colon and the spleen, Ts-MLES-DC decreased IFN-gamma (Thl) significantly and increased Th2 (IL-4, IL-13)-and Treg (IL-10, TGF-beta)- related cytokines. Conclusions: Ts-MLES-DC ameliorated the severity of the TNBS-induced colitis through decreasing IFN-gamma. Ts-MLES-DC skewed the Thl-mediated response toward the Th2 type and regulatory T cell response.

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