Salvianolic Acid B Suppresses Non-Small-Cell Lung Cancer Metastasis Through PKM2-Independent Metabolic Reprogramming
Overview
Authors
Affiliations
Objective: Salvianolic acid B (Sal B) has been demonstrated to be a potential chemoprevention agent for several cancers. Herein, we investigated the pharmacological function of Sal B on non-small-cell lung cancer (NSCLC) metastasis.
Methods: Two NSCLC cell lines (NCI-H2030 and NCI-H1650) were disposed of by 200 M Sal B or 10 M PKM2 agonist TEPP-46. Wound healing and transwell experiments were implemented for analyzing migratory and invasive capacities. Epithelial-to-mesenchymal transition (EMT) markers -catenin and E-cadherin were measured via western blotting. Cellular bioenergetics were evaluated with glucose uptake, lactate production, enolase activity, cellular ATP levels, as well as seahorse-based oxygen consumption rate (OCR), extracellular acidification rate (ECAR) analysis. Metabolic reprogramming markers PKM2, LDHA, and GLUT1 were detected via western blotting and immunofluorescence.
Results: The results showed that Sal B disposal weakened the migration and invasion of NCI-H2030 and NCI-H1650 cells and inactivated the EMT process according to downregulation of -catenin and upregulation of E-cadherin. Sal B-treated NSCLC cells displayed decreased glucose uptake, lactate production, enolase activity, cellular ATP levels, OCR, and ECAR, indicating a reduction in metabolic reprogramming. Additionally, Sal B downregulated the expression of PKM2, LDHA, and GLUT1. TEPP-46 may reverse the inhibitory effect of Sal B on metastasis as well as metabolic reprogramming.
Conclusion: Our findings provide evidence that Sal B enables to weaken NSCLC metastasis through PKM2-independent metabolic reprogramming, which sheds light on the promising therapeutic usage of Sal B in treating NSCLC.
Zhang Y, Zhai W, Fan M, Wu J, Wang C Molecules. 2024; 29(4).
PMID: 38398656 PMC: 10892080. DOI: 10.3390/molecules29040906.
He G, Chen G, Liu W, Ye D, Liu X, Liang X Pharmaceutics. 2023; 15(9).
PMID: 37765204 PMC: 10538146. DOI: 10.3390/pharmaceutics15092235.
Effect of (L.) Cav. on Inflammation, Senescence and Cell Migration.
Alves-Silva J, Pedreiro S, Cavaleiro C, Cruz M, Figueirinha A, Salgueiro L Nutrients. 2023; 15(8).
PMID: 37111149 PMC: 10146686. DOI: 10.3390/nu15081930.
Salvianolic acid B from bunge: A potential antitumor agent.
Guo S, Wang Z Front Pharmacol. 2022; 13:1042745.
PMID: 36386172 PMC: 9640750. DOI: 10.3389/fphar.2022.1042745.