IGF1R and hepatocellular carcinoma: Exosomal miR-122 (122-Exo) derived from MSCs derived from adipose tissue can be introduced into HCC cells to increase their chemosensitivity through cyclin G1 expression inhibition, metalloproteinease 10 disintegrin and inhibition, and insulin-like growth factor receptor 1 (IGF1R) expression inhibition.