Hesperidin inhibited acetaldehyde-induced matrix metalloproteinase-9 gene expression in human hepatocellular carcinoma cells.

Department of Chinese Medicine, Buddhist Dalin Tzu Chi General Hospital, Chia-Yi, Taiwan.
Toxicology Letters (Impact Factor: 3.36). 02/2009; 184(3):204-10. DOI: 10.1016/j.toxlet.2008.11.018
Source: PubMed

ABSTRACT Previous studies have revealed that acetaldehyde-induced cell invasion and matrix metalloproteinase-9 (MMP-9) activation and are directly involved in hepatic tumorigenesis and metastasis. Acetaldehyde is an important substance for tumor regression. We designed this study to aid in the development of powerful anti-cancer drugs with specific tumor regression and anti-metastatic potentials. Optimal drugs should possess both specific MMP-9 enzyme and gene transcriptional activities at the molecular level. Hesperidin, a flavonoid present in fruits and vegetables, possess anti-inflammatory and chemopreventive activities. Hesperidin suppressed acetaldehyde-induced cell invasion and inhibited the secreted and cytosolic MMP-9 forms in HepG2 cells with acetaldehyde. Hesperidin suppressed acetaldehyde-induced MMP-9 expression through the inhibition of nuclear factor-kappaB (NF-kappaB) and AP-1, and suppressed acetaldehyde-stimulated NF-kappaB translocation into the nucleus through IkappaB inhibitory signaling pathways. Hesperidin also inhibited acetaldehyde-induced AP-1 activity by the inhibitory phosphorylation of p38 kinase and c-Jun N-terminal kinase (JNK) signaling pathways. Results from our study revealed that hesperidin suppressed both acetaldehyde-activated NF-kappaB and activator protein 1 (AP-1) activity by IkappaB, JNK, and p38 signaling pathways. This resulted in the reduction of MMP-9 expression, secretion, and hepatocarcinoma cellular invasion. Our result confirmed the therapeutic potential of hesperidin an anti-metastatic and its involvement in the acetaldehyde-induced cell invasiveness of hepatocellular carcinoma in alcoholic patients.

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    ABSTRACT: Naringenin, a common dietary flavonoid abundantly present in fruits and vegetables, is believed to possess strong anti-proliferative properties and the ability to induce apoptosis in hepatoma cell lines. However, there are no reports describing its effects on the invasion and metastasis of hepatoma cell lines, and the detailed molecular mechanisms of its effects are still unclear. In this study, we investigated the mechanisms underlying naringenin-mediated inhibition of 12-O-Tetradecanoylphorbol-13-acetate (TPA)-induced cell invasion and inhibition of secreted and cytosolic MMP-9 production in human hepatoma cells (HepG2, Huh-7, and HA22T) and murine embryonic liver cells (BNL CL2). Naringenin suppressed MMP-9 transcription by inhibiting activator protein (AP)-1 and nuclear factor-κ B (NF- κ B) activity. It suppressed TPA-induced AP-1 activity through inhibiting the phosphorylation of the extracellular signal-related kinase (ERK) and c-Jun N-terminal kinase (JNK) signaling pathways, and it suppressed TPA-induced inhibition of NF- κ B nuclear translocation through I κ B. Additionally, it suppressed TPA-induced activation of ERK/phosphatidylinositol 3-kinase/Akt upstream of NF- κ B and AP-1. These data suggest that naringenin suppresses the invasiveness and metastatic potential of hepatocellular carcinoma (HCC) by inhibiting multiple signal transduction pathways. Copyright © 2015. Published by Elsevier Ireland Ltd.
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