18β-glycyrrhetinic Acid Modulated Autophagy is Cytotoxic to Breast Cancer Cells.

ABSTRACT: The development of endocrine therapy resistance in the luminal A subtype of breast cancer is related to the appearance of protective autophagy. The bioactive component from the root of licorice, 18β-glycyrrhetinic acid (18β-GA), has many antitumor properties. Whether 18β-GA can modulate autophagy to inhibit proliferation of the luminal A subtype is still unclear. The proportion of apoptosis caused by 18β-GA in MCF-7 and T-47D cells was determined using flow cytometry. The autophagy marker, LC3-II conversion, was investigated using Western blotting, and a Premo^TM Tandem Autophagy Sensor Kit. We found that the concentration (150-μM) of 18β-GA caused caspase-dependent apoptosis and LC3-II accumulation or blocked autophagic flux. Moreover, 18β-GA-mediated apoptosis was improved usin

SUBMITTER: Hsu YC 

PROVIDER: S-EPMC10087636 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature