Research Paper Volume 13, Issue 13 pp 17901—17913

Chloroquine suppresses proliferation and invasion and induces apoptosis of osteosarcoma cells associated with inhibition of phosphorylation of STAT3

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Figure 1. CQ induces the apoptosis and inhibits the viability and proliferation of OS cells. (A) The OS cell viability at 24 h, 48 h, and 72 h after treated with CQ (n = 3). (B) The IC50 value at 24 h and 48 h in 143B and U-2OS cells (n = 3). (C) The colony formation assay showed that the proliferation of OS cells was inhibited gradually by CQ with the increasing of concentration (***p < 0.001; n = 3). (D) Flow cytometry showed that CQ could regulate apoptosis of OS cells (***p < 0.001; n = 3). All the data were expressed as the mean ± SD.