Fig. 3
POG, as a natural inhibitor of PMN-MDSCs, is screened by molecular docking and weight calculation of docking scores. a Cytoscape analysis of the proteins in the upregulated KEGG pathway of B16-F10 tumour-bearing PMN-MDSCs and the top 10 key proteins of upregulation proteins of B16-F10 tumour-bearing PMN-MDSCs obtained according to the Cytoscape analysis degree. b Screening result of PMN-MDSC inhibitors from the traditional Chinese Medicine library with the top 10 key proteins as targets by molecular docking and weight calculation of docking score. c The 10 compounds from the traditional Chinese Medicine library, which binds well with 10 key proteins, and the absolute value of docking scores are more than 4 with all 10 proteins. d Weight calculation of the 10 compounds from the traditional Chinese Medicine library. e Inhibitory effect of the top 5 compounds on PMN-MDSCs (CD11b+ Ly6G+ Ly6Clow) in vitro. f The tumour growth curves of B16-F10 tumour-bearing mice after the top 5 compound treatments (n = 6). g Body weight of B16-F10 tumour-bearing mice after the top 5 compound treatments (n = 6). h Relative proportion of PMN-MDSCs (CD11b+ Ly6G+ Ly6Clow) in bone marrow, spleen and CD45+ cells from tumours of control and top 5 compound-treated B16-F10 tumour-bearing mice (n = 6). i Relative proportion of CD8 T-lymphocytes (CD3+CD8+) in spleens and CD45+ cells from tumours of control and top 5 compound-treated B16-F10 tumour-bearing mice (n = 6). The pooled data from three independent experiments are shown. All data are represented as the mean ± SD. * p < 0.05, ** p < 0.01, ***p < 0.001, ****p < 0.0001