The invention discloses an application of a miR-1246 inhibitor in preparation of a
medicine for preventing or treating postoperative
metastasis of
hepatocellular carcinoma (HCC). According to the application disclosed by the invention, the expression of miR-1246 in the serum
exosome of an HCC patient after operation is obviously up-regulated, the expression of BMP9
protein is inhibited by directly targeting a GDF2
gene, and a downstream
SMAD7-mediated
metastasis inhibition
signal channel is blocked, so that the HCC
cell metastasis is driven, that is, the metastasis promoting process can be effectively reversed by inhibiting the function of miR-1246. In-vivo and in-vitro experiments prove that by using the miR-1246 inhibitor, the HCC
cell anoikis
apoptosis resistance, migration, invasion and in-vivo
lung metastasis induced by the serum
exosome after operation can be remarkably inhibited. The miR-1246 inhibitor can also be combined with a recombinant
protein BMP9 to generate a synergistic anti-metastasis effect. Therefore, the miR-1246 inhibitor provides a new target and strategy for developing a novel anti-HCC postoperative metastasis
drug.