2019
DOI: 10.1158/1538-7445.am2019-516
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Abstract 516: Metformin inhibits monocyte differentiation to tumor associated macrophage (TAM) and may restore anti-tumor immunity

Abstract: Background: Tumor-associated macrophages (TAMs) play pivotal roles to regulate tumor cell behavior in tumor microenvironment and a high density of TAMs is associated with poor prognosis in various cancers. Recent studies have demonstrated that metformin, the first-line medication for the treatment of type 2 diabetes, have suppressive effects on tumor growth. Here, in this study, we investigated the effect of metformin on monocyte differentiation to TAMs. Methods: Peripheral blood mononuclear cel… Show more

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“…TAM, a dominant population of in ltrating in ammatory cells in a majority of malignant tumors, plays an important role in tumor progression through the production of soluble mediators that possibly promotes proliferation, matrix remodeling, invasion, immune evasion, and chemoresistance. M2 macrophages are known to have strong tumor-supporting functions as they contribute to the establishment of a local immunosuppressive microenvironment [3][4][5][6]. Phenotypically and functionally, macrophages can be polarized in two main directions, activated pro-in ammatory M1 macrophages with antitumor properties and alternatively, activated anti-in ammatory M2 macrophages with tumor-supporting functions.…”
Section: Introductionmentioning
confidence: 99%
“…TAM, a dominant population of in ltrating in ammatory cells in a majority of malignant tumors, plays an important role in tumor progression through the production of soluble mediators that possibly promotes proliferation, matrix remodeling, invasion, immune evasion, and chemoresistance. M2 macrophages are known to have strong tumor-supporting functions as they contribute to the establishment of a local immunosuppressive microenvironment [3][4][5][6]. Phenotypically and functionally, macrophages can be polarized in two main directions, activated pro-in ammatory M1 macrophages with antitumor properties and alternatively, activated anti-in ammatory M2 macrophages with tumor-supporting functions.…”
Section: Introductionmentioning
confidence: 99%