PMID- 21608020 OWN - NLM STAT- MEDLINE DCOM- 20120412 LR - 20171116 IS - 1097-4644 (Electronic) IS - 0730-2312 (Linking) VI - 112 IP - 10 DP - 2011 Oct TI - Arctigenin enhances chemosensitivity of cancer cells to cisplatin through inhibition of the STAT3 signaling pathway. PG - 2837-49 LID - 10.1002/jcb.23198 [doi] AB - Arctigenin is a dibenzylbutyrolactone lignan isolated from Bardanae fructus, Arctium lappa L, Saussureamedusa, Torreya nucifera, and Ipomea cairica. It has been reported to exhibit anti-inflammatory activities, which is mainly mediated through its inhibitory effect on nuclear transcription factor-kappaB (NF-kappaB). But the role of arctigenin in JAK-STAT3 signaling pathways is still unclear. In present study, we investigated the effect of arctigenin on signal transducer and activator of transcription 3 (STAT3) pathway and evaluated whether suppression of STAT3 activity by arctigenin could sensitize cancer cells to a chemotherapeutic drug cisplatin. Our results show that arctigenin significantly suppressed both constitutively activated and IL-6-induced STAT3 phosphorylation and subsequent nuclear translocation in cancer cells. Inhibition of STAT3 tyrosine phosphorylation was found to be achieved through suppression of Src, JAK1, and JAK2, while suppression of STAT3 serine phosphorylation was mediated by inhibition of ERK activation. Pervanadate reversed the arctigenin-induced downregulation of STAT3 activation, suggesting the involvement of a protein tyrosine phosphatase. Indeed, arctigenin can obviously induce the expression of the PTP SHP-2. Furthermore, the constitutive activation level of STAT3 was found to be correlated to the resistance of cancer cells to cisplatin-induced apoptosis. Arctigenin dramatically promoted cisplatin-induced cell death in cancer cells, indicating that arctigenin enhanced the sensitivity of cancer cells to cisplatin mainly via STAT3 suppression. These observations suggest a novel anticancer function of arctigenin and a potential therapeutic strategy of using arctigenin in combination with chemotherapeutic agents for cancer treatment. CI - Copyright (c) 2011 Wiley-Liss, Inc. FAU - Yao, Xiangyang AU - Yao X AD - Jiangsu Province Key Laboratory for Molecular and Medicine Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, PR China. FAU - Zhu, Fenfen AU - Zhu F FAU - Zhao, Zhihui AU - Zhao Z FAU - Liu, Chang AU - Liu C FAU - Luo, Lan AU - Luo L FAU - Yin, Zhimin AU - Yin Z LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Cell Biochem JT - Journal of cellular biochemistry JID - 8205768 RN - 0 (Antineoplastic Agents) RN - 0 (Furans) RN - 0 (Inhibitor of Apoptosis Proteins) RN - 0 (Lignans) RN - 0 (MYC protein, human) RN - 0 (Myeloid Cell Leukemia Sequence 1 Protein) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (STAT3 Transcription Factor) RN - 136601-57-5 (Cyclin D1) RN - EC 2.3.2.27 (BIRC3 protein, human) RN - EC 2.3.2.27 (Baculoviral IAP Repeat-Containing 3 Protein) RN - EC 2.3.2.27 (Ubiquitin-Protein Ligases) RN - EC 2.7.10.2 (Janus Kinase 1) RN - EC 2.7.10.2 (Janus Kinase 2) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - Q20Q21Q62J (Cisplatin) RN - U76MR9VS6M (arctigenin) SB - IM MH - Antineoplastic Agents/*pharmacology MH - Apoptosis/drug effects MH - Baculoviral IAP Repeat-Containing 3 Protein MH - Blotting, Western MH - Cell Line, Tumor MH - Cisplatin/*pharmacology MH - Cyclin D1 MH - Flow Cytometry MH - Furans/*pharmacology MH - G1 Phase/drug effects MH - HeLa Cells MH - Hep G2 Cells MH - Humans MH - Inhibitor of Apoptosis Proteins/genetics/metabolism MH - Janus Kinase 1/genetics/metabolism MH - Janus Kinase 2/genetics/metabolism MH - Lignans/*pharmacology MH - Mitogen-Activated Protein Kinase 1/genetics/metabolism MH - Mitogen-Activated Protein Kinase 3/genetics/metabolism MH - Myeloid Cell Leukemia Sequence 1 Protein MH - Phosphorylation/drug effects MH - Proto-Oncogene Proteins c-bcl-2/genetics/metabolism MH - Proto-Oncogene Proteins c-myc/genetics/metabolism MH - STAT3 Transcription Factor/*metabolism MH - Signal Transduction/*drug effects MH - Ubiquitin-Protein Ligases EDAT- 2011/05/25 06:00 MHDA- 2012/04/13 06:00 CRDT- 2011/05/25 06:00 PHST- 2011/05/25 06:00 [entrez] PHST- 2011/05/25 06:00 [pubmed] PHST- 2012/04/13 06:00 [medline] AID - 10.1002/jcb.23198 [doi] PST - ppublish SO - J Cell Biochem. 2011 Oct;112(10):2837-49. doi: 10.1002/jcb.23198.