antioxidants Review Recent Advances in Anti-Metastatic Approaches of Herbal Medicines in 5 Major Cancers: From Traditional Medicine to Modern Drug Discovery Jinkyung Park 1,†, Dahee Jeong 1,†, Meeryoung Song 1,† and Bonglee Kim 1,2,3,* 1 College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea;
[email protected] (J.P.);
[email protected] (D.J.);
[email protected] (M.S.) 2 Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea 3 Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea * Correspondence:
[email protected]; Tel.: +82-2-961-9217 † These authors are co-first authors. Abstract: Metastasis is the main cause of cancer-related death. Despite its high fatality, a comprehen- sive study that covers anti-metastasis of herbal medicines has not yet been conducted. The aim of this study is to investigate and assess the anti-metastatic efficacies of herbal medicines in the five major cancers, including lung, colorectal, gastric, liver, and breast cancers. We collected articles published within five years using PubMed, Google Scholar, and Web of Science with “cancer metastasis” and “herbal medicine” as keywords. Correspondingly, 16 lung cancer, 23 colorectal cancer, 10 gastric cancer, 10 liver cancer, and 18 breast cancer studies were systematically reviewed. The herbal Citation: Park, J.; Jeong, D.; Song, M.; medicines attenuated metastatic potential targeting various mechanisms such as epithelial mes- Kim, B. Recent Advances in enchymal transition (EMT), reactive oxygen species (ROS), and angiogenesis. Specifically, the drugs Anti-Metastatic Approaches of regulated metastasis related factors such as matrix metalloproteinase (MMP), serine-threonine pro- Herbal Medicines in 5 Major Cancers: tein kinase/extracellular regulated protein kinase (AKT/ERK), angiogenic factors, and chemokines.