Total flavonoid from Glycyrrhizae Radix et Rhizoma and its ingredient isoliquiritigenin regulation M2 phenotype polarization of macrophages
To study the mechanisms of total flavonoid from Glycyrrhizae Radix et Rhizoma (TFGR) and its ingredient isoliquiritigenin (ISL) on their regulation of M2 phenotype polarization of macrophages.IL-4 (60 μg · L-1) induced RAW264.7 cells for 6 h to establish the M2 macrophage model.TFGR and ISL restrained breast cancer cells migration with the aid of M2 macrophages in vitro.TFGR and ISL inhibited gene and protein expression of Arg-1,up-regulated gene of HO-1 and protein expression of iNOS,enhanced the expression of microRNA 155 and its target gene SHIPl,meanwhile down-regulated the phosphorylation of STAT3 and STAT6.So TFGR and ISL were the bioactive fraction and ingredient in Glycyrrhizae Radix et Rhizoma to reverse M2 phenotype macrophages polarization.TFGR and ISL inhibited the promotion of M2 macrophages to breast cancer cells migration in vitro,STAT signal pathways and miR155 were partly involved.
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