Journal: Journal of Inflammation Research
Article Title: Sirp-α Antibody Inhibits Renal Cell Carcinoma Progression via Akt1/Akt2 Modulation in Tumor-Associated Macrophages
doi: 10.2147/JIR.S530775
Figure Lengend Snippet: The Sirp-α mAb inhibited RCC-induced M2 macrophage polarization by regulation of the PI3K/AKT pathway. ( A ) The STRING mutual drawing of the Akt1 and Akt2 with the 25 up-regulated intersection genes. ( B ) The STRING mutual drawing of Sirp-α with PI3K, Akt1 and Akt2. ( C ) The co-cultivation mode diagram to test the effect of the tumor cells on the M2 macrophage polarization (the THP-1 cells induced with PMA and IL-4) in RCC cell line (ACHN)-conditioned medium. ( D ) Representative contour plots from flow cytometry analysis of the frequencies of the CD206 + /CD86 + macrophages. ( E ) The macrophages killing assay to detect the killing ability of macrophages against tumors in a co-cultured system of the macrophages and the ACHN cells with different conditions. ACHN+M (the ACHN and macrophages co-cultured groups), ACHN+M+Sirp-α (Sirp-α mAb was added at a concentration of 10 μg/mL to the macrophages cells), CD47 − ACHN+M (the macrophages were co-cultured with the CM of the ACHN cells knockdown CD47), CD47 − ACHN+M+Sirp-α (the macrophages disposed with the Sirp-α mAb then were co-cultured with the CM of the ACHN cells knockdown CD47). ( F and G ) The protein expression of PI3K, p-PI3K, Akt1, Akt2 was detected using Western blotting and densitometric analysis. ( H and I ) The protein expression of M2 macrophage marker (CD163, Arg-1, and IL-10) expression in the four groups using Western blotting and densitometric analysis. ( J ) The qRT-PCR analysis of M1 macrophage marker (IL-1, IL-6, IL-12, and TNF-α) expression of the four groups. ( K ) The ELISA analysis of M1 macrophage marker (IL-1, IL-6, IL-12, and TNF-α) expression of the four groups. M2 groups (the isolate M2 cells groups), M2 + PI3K groups (the PI3K overexpressed groups: Lenti-PI3K was added at the beginning of the stimulation), M2 + Sirp-α groups (Sirp-α mAb was added at a concentration of 10 μg/mL to the cells) and M2 + PI3K + Sirp-α groups (Sirp-α mAb was added at a concentration of 10 μg/mL to the cells after transferred Lenti-PI3K). Data are representative of three independent experiments. Values are shown as means±SD from three independent experiments. * P <0.05, ** P <0.01, *** P <0.001.
Article Snippet: The human RCC cell lines (ACHN) and mice renal cell lines (Renca) from the American Type Culture Collection (Manassas, VA, USA) were cultured in Dulbecco’s modified Eagle’s medium (DMEM; Biological Industries, Shanghai, China) supplemented with 10% fetal bovine serum (FBS, Biological Industries, USA), penicillin (100 U/mL), and streptomycin (100 g/mL).
Techniques: Flow Cytometry, Cell Culture, Concentration Assay, Knockdown, Expressing, Western Blot, Marker, Quantitative RT-PCR, Enzyme-linked Immunosorbent Assay