Anti-inflammatory mechanisms of resveratrol in activated HMC-1 cells: pivotal roles of NF-kappaB and MAPK.
Resveratrol is a phytoalexin polyphenolic compound found in various plants, including grapes, berries, and peanuts. Recently, studies have documented various health benefits of resveratrol including cardiovascular and cancer-chemopreventive properties. The aim of the present study was to demonstrate the effects of resveratrol on the expression of pro-inflammatory cytokines, as well as to elucidate its mechanism of action in the human mast cell line (HMC-1). Cells were stimulated with phorbol 12-myristate 13-acetate (PMA) plus A23187 in the presence or absence of resveratrol. To study the possible effects of resveratrol, ELISA, RT-PCR, real-time RT-PCR, Western blot analysis, fluorescence, and luciferase activity assays were used in this study. Resveratrol significantly inhibited the PMA plus A23187-induction of inflammatory cytokines such as tumour necrosis factor (TNF)-alpha, interleukin (IL)-6 and IL-8. Moreover, resveratrol attenuated cyclooxygenase (COX)-2 expression and intracellular Ca2+ levels. In activated HMC-1 cells, phosphorylation of extra-signal response kinase (ERK) 1/2 decreased after treatment with resveratrol. Resveratrol inhibited PMA plus A23187-induced nuclear factor (NF)-kappaB activation, IkappaB degradation, and luciferase activity. Resveratrol suppressed the expression of TNF-alpha, IL-6, IL-8 and COX-2 through a decrease in the intracellular levels of Ca2+ and ERK 1/2, as well as activation of NF-kappaB. These results indicated that resveratrol exerted a regulatory effect on inflammatory reactions mediated by mast cells.
Kang
Ok-Hwa
OH
College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea.
Jang
Hye-Jin
HJ
Chae
Hee-Sung
HS
Oh
You-Chang
YC
Choi
Jang-Gi
JG
Lee
Young-Seob
YS
Kim
Jong-Hak
JH
Kim
Youn Chul
YC
Sohn
Dong Hwan
DH
Park
Hyun
H
Kwon
Dong-Yeul
DY
D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology*; D000001:Calcimycin / Q000494:pharmacology; D002118:Calcium / Q000378:metabolism; D002460:Cell Line; D051546:Cyclooxygenase 2 / Q000378:metabolism; D004789:Enzyme Activation; D006801:Humans; D051550:I-kappa B Kinase / Q000037:antagonists & inhibitors / Q000378:metabolism; D015850:Interleukin-6 / Q000378:metabolism; D016209:Interleukin-8 / Q000378:metabolism; D008407:Mast Cells / Q000187:drug effects* / Q000502:physiology; D020928:Mitogen-Activated Protein Kinases / Q000502:physiology*; D016328:NF-kappa B / Q000037:antagonists & inhibitors / Q000502:physiology*; D010766:Phosphorylation; D000077185:Resveratrol; D013267:Stilbenes / Q000494:pharmacology*; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
D000894:Anti-Inflammatory Agents, Non-Steroidal; D015850:Interleukin-6; D016209:Interleukin-8; D016328:NF-kappa B; D013267:Stilbenes; D014409:Tumor Necrosis Factor-alpha; D000001:Calcimycin; D051546:Cyclooxygenase 2; D051550:I-kappa B Kinase; D020928:Mitogen-Activated Protein Kinases; D013755:Tetradecanoylphorbol Acetate; D000077185:Resveratrol; D002118:Calcium