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  • Title: [A method for induction of mouse CD8α(+);CD11b(+);jagged2(high);regulatory dendritic cells with mesenchymal stem cells in vitro].
    Author: Weng JY, Huang X, Lai PL, Li YY, Xu L, Wu P, Geng SX, DU X.
    Journal: Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi; 2012 Jun; 28(6):568-71. PubMed ID: 22691344.
    Abstract:
    AIM: To develop a method for induction of the mouse bone marrow-derived CD8α(+);CD11b(+);jagged2(high);regulatory dendritic cells (DCregs) using mesenchymal stem cells (MSCs) in vitro. METHODS: BALB/c(H-2(d);)mouse bone marrow cells (BMCs) were isolated and induced to CD8α(+);CD11c(+);CD11b(+);DCs (DCs) by 4 cytokines in vitro for 3 d. The DCs were selected by flow cytometry (FCM), and co-cultured with MSCs for 10 d to get DCregs. Immunophenotypes, cell cycle, Jagged1 and Jagged2 ligands of the Notch pathway of DCs were analyzed by FCM before and after co-culture. RESULTS: The novel DCs were transformed into DCregs successfully. The expressions of CD86, CD80, CD40, and MHC-II significantly decreased (P<0.05), while those of CD205, Jagged1 and Jagged2 obviously increased on DCregs (P<0.05). Meanwhile, the percentage of treated MSCs cells went up in G2 and S phases. CONCLUSION: MSCs co-cultured with DCs can induce the development of DCregs, which have immune tolerance-associated phenotypes and higher proliferation ability. This mechanism might be related to the up-regulated Jagged1 and Jagged2 expressions and the T-cell Notch pathway activation.
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