title: Flavanone and 2'-OH flavanone inhibit metastasis of lung cancer cells via down-regulation of proteinases activities and MAPK pathway.
abstract: Flavanones richly exist in citrus and have been well characterized to have various bioactive properties. However, the anti-metastasis properties of flavanones remain unclear. The anti-metastatic effects of six flavanones including flavanone, 2'-OH flavanone, 4'-OH flavanone, 6-OH flavanone, naringin, and naringenin were investigated in lung cancer cells. Despite little influence on cell viability, flavanone and 2'-OH flavanone markedly inhibited the invasion, motility, and cell-matrix adhesion of A549 cells. This was associated with a reduced expression of matrix metalloproteinase (MMP)-2 and urokinase-type plasminogen activator (u-PA) in treated cells. Treatment with flavanone and 2'-OH flavanone also potently attenuated the phosphorylations of extracellular signal-regulated kinase 1/2 (ERK 1/2) and p38(MAPK), as well as the activations of NF-kappaB and AP-1. The reduced expressions of MMP-2 and u-PA, as well as inhibition of cell invasion were obtained in the cultures treated with U0126 (ERK 1/2 inhibitor) and SB203580 (p38(MAPK) inhibitor). Thus, the inhibitory effects of flavanone and 2'-OH flavanone on the expression of MMP-2 and u-PA may be at least partly through inactivation of ERK 1/2 and p38(MAPK) signaling pathways. Finally, oral administration of flavanone and 2'-OH flavanone were evidenced by its inhibition on the metastasis of A549 cells and Lewis lung carcinoma (LLC) cells in vivo. In conclusion, flavanone and 2'-OH flavanone perturb the invasion and metastasis of lung cancer cells, thereby constituting an adjuvant treatment for metastasis control.
authors: Institute of Biochemistry and Biotechnology, Chung Shan Medical University, No. 110, Section 1, Chien Kuo N. Road, Taichung 402, Taiwan.
authors: Yung-Chin
authors: YC
authors: Hsiao
authors: Wu-Hsien
authors: WH
authors: Kuo
authors: Pei-Ni
authors: PN
authors: Chen
authors: Horng-Rong
authors: HR
authors: Chang
authors: Tseng-Hsi
authors: TH
authors: Lin
authors: Wei-En
authors: WE
authors: Yang
authors: Yih-Shou
authors: YS
authors: Hsieh
authors: Shu-Chen
authors: SC
authors: Chu
mesh_terms: D000818:Animals; D002448:Cell Adhesion / Q000187:drug effects; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D015536:Down-Regulation / Q000187:drug effects; D004789:Enzyme Activation / Q000187:drug effects; D004791:Enzyme Inhibitors / Q000494:pharmacology; D044950:Flavanones / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000378:metabolism*; D020935:MAP Kinase Signaling System / Q000187:drug effects*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D015394:Molecular Structure; D009362:Neoplasm Metastasis / Q000517:prevention & control*; D010447:Peptide Hydrolases / Q000187:drug effects / Q000378:metabolism*; D010766:Phosphorylation / Q000187:drug effects; D023041:Xenograft Model Antitumor Assays
chemical_list: C520534:2'-hydroxyflavanone; D004791:Enzyme Inhibitors; D044950:Flavanones; D010447:Peptide Hydrolases; C028610:flavanone