Abstract
A soluble Jagged 1/Fc chimera protein (Jagged 1/Fc) was directly used to induce differentiation and maturation of bone marrow-derived dendritic cells (DCs) in mice in vitro. A model of inducing and amplifying DCs in vitro was established. The effect of Jagged 1/Fc on morphology of DCs induced by both rmGM-CSF and rmIL-4 was observed under a confocal microscope. A fluorescein-labeled monoclonal antibody staining combined with flow cytometry was applied to detect the effect of Jagged 1/Fc on the expression of CD11c, MHC-II, CD86, CD80 and CD40 molecules on the surface of DCs. The results showed that Jagged 1/Fc did not affect the morphological properties of DC differentiation induced by both rmGM-CSF and rmIL-4. But it could promote the differentiation and maturation of DCs induced by both. The effect of it was strikingly different in the expression profile of co-stimulating molecules and the morphologic properties of DCs from lipopolysaccharide (LPS). The levels of MHC-II and CD40 molecule expression on the surface of DCs stimulated by Jagged 1/Fc were significantly lower than those stimulated by LPS, and the level of CD80 expression on the surface of DCs induced by Jagged 1/Fc was near to that induced by LPS. Jagged 1/Fc had no influence on the expression of CD86 molecule on the surface of DCs. Jagged 1/Fc when used alone could not maintain the growth, differentiation and maturation of DCs. All the findings indicate that Jagged 1/Fc influences the differentiation and maturation of DCs, which is not markedly similar to LPS, providing important evidence for its development and application as a novel immunosuppressant.
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Supported by the National Natural Science Foundation of China (Grant No. 30471635) and the Natural Science Foundation of Guangdong Province (Grant Nos. 04010451 and 5006033)
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Xing, F., Liu, J., Yu, Z. et al. Soluble Jagged 1/Fc chimera protein induces the differentiation and maturation of bone marrow-derived dendritic cells. Chin. Sci. Bull. 53, 1040–1048 (2008). https://doi.org/10.1007/s11434-008-0177-9
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DOI: https://doi.org/10.1007/s11434-008-0177-9