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Development of peritoneal macrophage along a dendritic cell lineage in response to uptake of oligomannose-coated liposomes.

机译:响应于寡甘露糖涂层的脂质体的吸收,沿树突状细胞谱系发展腹膜巨噬细胞。

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摘要

In this study, we investigate the potential of peritoneal macrophages to differentiate into dendritic cell (DCs) in response to preferential uptake of oligomannose-coated liposomes (OMLs). About 30% of peritoneal cells (PECs) preferentially took up OMLs that were administered into the peritoneal cavity. The OML-ingesting cells expressed CD11b and F4/80, but lacked CD11c expression, indicating that the OML-ingesting PECs with a CD11b(high)CD11c(-) phenotype are resident peritoneal macrophages. During in vitro cultivation, CD11c(+) cells arose among the PECs with ingested OMLs. CD11c(+) cells also developed among enriched peritoneal CD11b(high)CD11(-) cells from OML-treated mice, and the resulting CD11c(+) cells expressed co-stimulatory molecules and MHC class II. In addition, OML-ingesting CD11b(high)CD11c(+) cells were found in spleen after the enriched peritoneal macrophages with ingested OMLs were transplanted in the peritoneal cavity of mice. These results show that a fraction of peritoneal macrophages can differentiate into mature DCs following uptake of OMLs.
机译:在这项研究中,我们调查了响应寡糖甘露糖衣脂质体(OMLs)的优先摄取,腹膜巨噬细胞分化为树突状细胞(DCs)的潜力。约30%的腹膜细胞(PEC)优先吸收被施用至腹膜腔的OML。 OML摄取细胞表达CD11b和F4 / 80,但缺乏CD11c表达,表明具有CD11b(高)CD11c(-)表型的OML摄取PEC是常驻腹膜巨噬细胞。在体外培养过程中,在摄入OML的PEC中出现CD11c(+)细胞。 CD11c(+)细胞也在OML处理的小鼠的腹膜CD11b(高)CD11(-)细胞中发展,并且所得CD11c(+)细胞表达了共刺激分子和II类MHC。此外,在将富含摄入的OML的腹膜巨噬细胞移植到小鼠腹腔后,在脾脏中发现了富含OML的CD11b(高)CD11c(+)细胞。这些结果表明,一部分腹膜巨噬细胞在摄取OML后可以分化为成熟的DC。

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