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. 2017 Mar 2;12(3):e0173335. doi: 10.1371/journal.pone.0173335

Fig 6. Metformin interrupts the effect of stromal cells on epithelial cells.

Fig 6

A-B: The cell viability of BPH-1 (A) and P69 (B) was markedly enhanced with conditioned medium of 3T3 fibroblast cells, and was abrogated by 5 mM metformin. C: Metformin (5 mM, 24 h) inhibited the secretion of IGF-1 in 3T3 cells. D: Immunoblots of IGF-1R and pho-IGF-1R in BPH-1 cells treated with CM of human prostatic fibroblast. E: The BPH-1 cell viability after treatment with CM of human prostatic fibroblast. F: Metformin (5 mM, 24 h) inhibited the secretion of IGF-1 in human prostatic fibroblasts. *, P<0.05 compared with the control (CTR) group; #, P<0.05 compared with CM-treated group. CTR: non-treated control, Met: metformin.