PMID- 25091623 OWN - NLM STAT- MEDLINE DCOM- 20150609 LR - 20211203 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 22 IP - 2 DP - 2014 Oct TI - The anti-inflammatory effect of 3-deoxysappanchalcone is mediated by inducing heme oxygenase-1 via activating the AKT/mTOR pathway in murine macrophages. PG - 420-6 LID - S1567-5769(14)00302-6 [pii] LID - 10.1016/j.intimp.2014.07.025 [doi] AB - 3-Deoxysappanchalcone (3-DSC), isolated from Caesalpinia sappan (Leguminosae), is a chalcone that exerts a variety of pharmacological activities. In the present study, we demonstrated that 3-DSC exerts anti-inflammatory activity in murine macrophages by inducing heme oxygenase-1 (HO-1) expression at the translational level. Treatment of RAW264.7 cells with 3-DSC induced HO-1 protein expression in a dose- and time-dependent manner without affecting HO-1 mRNA expression. Mitogen-activated protein kinase inhibitors or actinomycin D, a transcriptional inhibitor, did not block 3-DSC-mediated HO-1 induction. However, 3-DSC-mediated HO-1 induction was completely blocked by treatment with cycloheximide, a translational inhibitor, or rapamycin, an inhibitor of the mammalian target of rapamycin (mTOR). Strikingly, 3-DSC increased the phosphorylation level of mTOR downstream target molecules such as eukaryotic translation initiation factor 4E-binding protein 1 (4E-BP1) and S6 kinase 1 (S6K1), as well as AKT in a dose- and time-dependent manner, suggesting that the 3-DSC induces HO-1 expression by activating the AKT/mTOR pathway. Consistent with the notion that HO-1 has anti-inflammatory properties, 3-DSC inhibited the production of nitric oxide (NO) and interleukin (IL)-6 in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Inhibition of HO-1 activity by treatment with tin protoporphyrin IX, a specific HO-1 inhibitor, abrogated the inhibitory effects of 3-DSC on the production of NO and IL-6 in LPS-stimulated RAW264.7 cells. Taken together, 3-DSC may be an effective HO-1 inducer at the translational level that has anti-inflammatory effects, and a valuable compound for modulating inflammatory conditions. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Kim, Jun-Hyeong AU - Kim JH AD - Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 200-701, Republic of Korea. FAU - Choo, Young-Yeon AU - Choo YY AD - Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 200-701, Republic of Korea. FAU - Tae, Nara AU - Tae N AD - Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 200-701, Republic of Korea. FAU - Min, Byung-Sun AU - Min BS AD - College of Pharmacy, Catholic University of Daegu, Gyeongsan 712-702, Republic of Korea. FAU - Lee, Jeong-Hyung AU - Lee JH AD - Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 200-701, Republic of Korea. Electronic address: jhlee36@kangwon.ac.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140801 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Chalcones) RN - 0 (Lipopolysaccharides) RN - 0 (Membrane Proteins) RN - 0 (RNA, Messenger) RN - 31C4KY9ESH (Nitric Oxide) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - EC 1.14.14.18 (Hmox1 protein, mouse) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - LHE9JFQ1U8 (3-deoxysappanchalcone) SB - IM MH - Animals MH - Anti-Inflammatory Agents/*pharmacology MH - Caesalpinia MH - Cell Line MH - Cell Survival/drug effects MH - Chalcones/*pharmacology MH - Heme Oxygenase-1/genetics/*metabolism MH - Lipopolysaccharides MH - Macrophages/*drug effects/metabolism MH - Membrane Proteins/genetics/*metabolism MH - Mice, Inbred C57BL MH - Nitric Oxide/metabolism MH - Proto-Oncogene Proteins c-akt/*metabolism MH - RNA, Messenger/metabolism MH - Signal Transduction/drug effects MH - TOR Serine-Threonine Kinases/*metabolism OTO - NOTNLM OT - 3-Deoxysappanchalcone OT - Anti-inflammatory effect OT - Heme oxygenase-1 OT - Translation OT - mTOR EDAT- 2014/08/06 06:00 MHDA- 2015/06/10 06:00 CRDT- 2014/08/06 06:00 PHST- 2014/02/17 00:00 [received] PHST- 2014/06/09 00:00 [revised] PHST- 2014/07/22 00:00 [accepted] PHST- 2014/08/06 06:00 [entrez] PHST- 2014/08/06 06:00 [pubmed] PHST- 2015/06/10 06:00 [medline] AID - S1567-5769(14)00302-6 [pii] AID - 10.1016/j.intimp.2014.07.025 [doi] PST - ppublish SO - Int Immunopharmacol. 2014 Oct;22(2):420-6. doi: 10.1016/j.intimp.2014.07.025. Epub 2014 Aug 1.