Abstract
Osteogenic sarcoma (OGS) is a primary bone cancer, characterized by aggressive neoplasm from mesenchymal oncogenesis. However, the clinical therapeutic regimen against OGS is limited. Therefore, potential medication warrants to be further developed. Our previous study indicates that formononetin (FN) exerts effective pharmacological activity against OGS. This study aimed to further decipher the molecular mechanism behind this benefit. Patients with OGS were recruited for clinical data assay and immunoassay. Human OGS cell line (U2OS) and tumor-bearing nude mice were subjected to a battery of biochemical analyses and immunoassays for integrative evaluation of FN-exerted anti-OGS effects. In human data, OGS samples showed increased expressions of ERα, p-PI3KCATyr317 , and p-AKT Ser473 proteins, followed by notably upregulated miR-375 content in comparison with that in OGS-free. In addition, FN-treated U2OS cells showed inhibited cell proliferation, elevated lactic dehydrogenase production and lowered endogenous miR-375 level in cells. Further, reduced immunopositive cells of Ki-67, p-PI3KCA Tyr317 , and p-AKT Ser473 were observed by the treatments of FN, while the intracellular Bax- and Apaf-1-positive cells were increased dose-d...Continue Reading
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