Inhibition of ALDOA and ENO1‐mediated Glycolysis of Oridonin as a Novel Anti‐tumor Strategy of Non‐small Cell Lung Cancer

AbstractNon‐small cell lung cancer (NSCLC) is the most common type of lung cancer. Oridonin (ORI), the main pharmacodynamic component of the Chinese herb Herba Rabdosiae with anti‐cancer activity has been reported to inhibit various types of cancer including NSCLC. However, its direct target proteins acting on NSCLC still require further investigation. In this study, we analyze the direct protein profile and identify the key targets of ORI by combining activity‐based protein profiling (ABPP) and the cellular thermal shift assay (CETSA). As a result, ORI can significantly promote LLC cell apoptosis, decrease mitochondrial membrane potential (MMP), and increase reactive oxygen species (ROS) accumulation. In addition, both ABPP and CETSA indicate that ORI directly binds to key proteins of the glycolysis pathway, including Aldolase A (ALDOA), Enolase 1 (ENO1), Pyruvate kinase M2 (PKM2) and Lactate dehydrogenase (LDHA). Based on the LLC mouse model, ORI markedly inhibits the growth of lung tumors, increases the serum levels of antioxidant enzymes catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH‐Px), and reduces the production of malondialdehyde (MDA). To sum up, ORI can be regarded as a novel anti‐tumor strategy of NSCLC by inhibiting ALDOA and ENO1‐mediated glycolysis.This article is protected by copyright. All rights reserved