Bcl-x_L inhibition enhances Dinaciclib-induced cell death in soft-tissue sarcomas.

ABSTRACT: Soft-tissue sarcomas (STS) are an uncommon and heterogeneous group of malignancies that result in high mortality. Metastatic STS have very bad prognosis due to the lack of effective treatments. Dinaciclib is a model drug for the family of CDK inhibitors. Its main targets are cell cycle regulator CDK1 and protein synthesis controller CDK9. We present data supporting Dinaciclib ability to inactivate in vitro different STS models at nanomolar concentrations. Moreover, the different rhythms of cell death induction allow us to further study into the mechanism of action of the drug. Cell death was found to respond to the mitochondrial pathway of apoptosis. Anti-apoptotic Bcl-x_L was identified as the key regulator of this process. Already natural low levels of pro-apoptotic proteins BI

SUBMITTER: Rello-Varona S 

PROVIDER: S-EPMC6405759 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature