TY - JOUR AB - Arctigenin is a natural lignan that is found in burdock with anti‑viral, ‑oxidative, ‑inflammatory and anti‑tumor activities. In the current study, the effect of arctigenin on metastatic potential was examined in 4T‑1 mouse triple‑negative breast cancer cells. The results indicated that arctigenin inhibited cell motility and invasiveness, which was determined using wound healing and transwell invasion assays. Arctigenin suppressed matrix metalloprotease‑9 (MMP‑9) activity via gelatin zymography, and protein expression of cyclooxygenase‑2 (COX‑2) and MMP‑3. Furthermore, arctigenin attenuated the mRNA expression of metastatic factors, including MMP‑9, MMP‑3 and COX‑2. Based on these results, the effect of arctigenin on the mitogen‑activated protein kinase (MAPK)/activating protein‑1 (AP‑1) signaling pathway was assessed in an attempt to identify the regulatory mechanism responsible for its anti‑metastatic effects. Arctigenin was demonstrated to inhibit the phosphorylation of extracellular signal‑regulated protein kinase (ERK) and c‑Jun N‑terminal kinase (JNK), and the nuclear translocations of the AP‑1 subunits, c‑Jun and c‑Fos. In summary, the present study demonstrated that in 4T‑1 mouse triple‑negative breast cancer cells the anti‑metastatic effect of arctigenin is mediated by the inhibition of MMP‑9 activity and by the inhibition of the metastasis‑enhancing factors MMP‑9, MMP‑3 and COX‑2, due to the suppression of the MAPK/AP‑1 signaling pathway. The results of the current study demonstrated that arctigenin exhibits a potential for preventing cell migration and invasion in triple negative breast cancer. AD - Department of Pharmacology and Intractable Disease Research Center, School of Medicine, Dongguk University, Gyeongju 38066, Republic of Korea AU - Lee,Min‑Gu AU - Lee ,Kyu‑Shik AU - Nam,Kyung‑Soo DA - 2020/03/01 DO - 10.3892/mmr.2020.10937 EP - 1382 IS - 3 JO - Mol Med Rep KW - arctigenin triple‑negative breast cancer metastatic potential matrix metalloprotease‑9 activating protein‑1 PY - 2020 SN - 1791-2997 1791-3004 SP - 1374 ST - Anti‑metastatic effects of arctigenin are regulated by MAPK/AP‑1 signaling in 4T‑1 mouse breast cancer cells T2 - Molecular Medicine Reports TI - Anti‑metastatic effects of arctigenin are regulated by MAPK/AP‑1 signaling in 4T‑1 mouse breast cancer cells UR - https://doi.org/10.3892/mmr.2020.10937 VL - 21 ER -