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Matches in SemOpenAlex for { <https://semopenalex.org/work/W3200330839> ?p ?o ?g. }

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• W3200330839 abstract "The development of pancreatic ductal adenocarcinoma (PDAC) is closely tied with the immune system. C-C motif chemokine ligands (CCL) were proved to lead to immune recruitment and training. Thus, we reckoned CCL2 to be the kernel of immune suppression in PDAC tissues.We compared normal pancreatic tissues with PDAC tissues according to The Cancer Genome Atlas (TCGA) and clinical samples. Flow cytometry was used to identify M-MDSCs. We further demonstrated immune suppression of M-MDSCs according to proliferation rates of CD8+ T cells/CD4+ T cells. Levels of reactive oxygen species (ROS) and Arginase were also tested by flow cytometry, enzyme-linked immunosorbent assay, and western blot analysis. We also analyzed the specific mechanisms by cluster analysis after CCL2 stimulating M-MDSCs.We found that CCL2 highly increased in PDAC tissues. CCL2 is positively related to CD33 and CD14, markers of monocytic myeloid-derived suppressor cells (M-MDSCs). We have demonstrated that CCL2 recruited M-MDSCs into PDAC tissues both in vitro and in vivo. M-MDSCs recruitment is accompanied by sustained immune suppression. Furthermore, we have found that M-MDSCs impeded T cell proliferation and produced high levels of ROS and Arginase, which can be enhanced by CCL2. Mechanistically, CCL2 stimulated M-MDSCs led to a significant upregulation of genes, a large part of which accumulated in the mitogen-activated protein kinase signaling pathway. Treatment of aloesin, MAPK signaling inhibitor, relieved the associated immunosuppressive phenotype induced by CCL2.Our study indicates that PDAC cells produced CCL2, which promoted localized M-MDSC recruitment and immune suppression, thereby promoting tumor progression." @default.
• W3200330839 created "2021-09-27" @default.
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• W3200330839 date "2021-09-15" @default.
• W3200330839 modified "2023-10-16" @default.
• W3200330839 title "CCL2 produced by pancreatic ductal adenocarcinoma is essential for the accumulation and activation of monocytic myeloid‐derived suppressor cells" @default.
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• W3200330839 doi "https://doi.org/10.1002/iid3.523" @default.
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