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Liu Y, Wang X, Zeng S, Zhang X, Zhao J, Zhang X, Chen X, Yang W, Yang Y, Dong Z, Zhu J, Xu X, Tian F. The natural polyphenol curcumin induces apoptosis by suppressing STAT3 signaling in esophageal squamous cell carcinoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:303. [PMID: 30518397 PMCID: PMC6280482 DOI: 10.1186/s13046-018-0959-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 11/13/2018] [Indexed: 12/12/2022]
Abstract
Background We and others have previously shown that the STAT3 signaling pathway is activated in some esophageal squamous cell carcinoma (ESCC) cells and is required for the survival and growth of these primary ESCC-derived xenografts. It has also been shown that the natural polyphenol curcumin is an effective anti-tumor agent. Methods Luciferase assay and immunoblotting were performed to examine whether curcumin suppressed STAT3 signaling. CCK-8 assay and xenografts were utilized for analyzing ESCC cell growth in culture and mice. Soft agar assay was carried out to determine the colony formation ability of ESCC cells in the presence or absence of curcumin. Cell death and cell cycle were assessed by In CELL Analyzer 2000. Immunohistochemistry and TUNEL assay were used for detecting apoptosis in ESCC tisuses. Molecular docking was performed to evaluate the interaction of curcumin with JAK2. JAK2 activity was assessed using an in vitro cell-free system. HE staining was used to evaluate the ESCC tissues. Results The natural polyphenol curcumin inhibited STAT3 phosphorylation rapidly and blocked STAT3-mediated signaling in ESCC cells. It also induced growth arrest and apoptosis in cultured ESCC cells, which were attenuated by enforced expression of STAT3. Furthermore, curcumin preferentially blocked the growth of primary ESCC-derived xenografts that harbored activated STAT3. Conclusions Curcumin is able to exert anti-tumor action through inhibiting the STAT3 signaling pathway. Giving its wide use in traditional medicines with low toxicity and few adverse reactions, it is conceivable that curcumin might be further explored as a unique STAT3 inhibitor for anti-cancer therapies.
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Affiliation(s)
- Ying Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China.,Clinical Research Center, People's Hospital of Zhengzhou, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xinhua Wang
- Department of Histology and Embryology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Shuang Zeng
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xiane Zhang
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Jimin Zhao
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xiaoyan Zhang
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xinhuan Chen
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Wanjing Yang
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Yili Yang
- Suzhou Institute of Systems Medicine, Center for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Ziming Dong
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Jingyu Zhu
- School of Medicine and Pharmaceutics, Jiangnan University, Wuxi, Jiangsu, 214000, People's Republic of China
| | - Xin Xu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China. .,Suzhou Institute of Systems Medicine, Center for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, Jiangsu, 215123, People's Republic of China.
| | - Fang Tian
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China. .,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China.
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Raji I, Yadudu F, Janeira E, Fathi S, Szymczak L, Kornacki JR, Komatsu K, Li JD, Mrksich M, Oyelere AK. Bifunctional conjugates with potent inhibitory activity towards cyclooxygenase and histone deacetylase. Bioorg Med Chem 2017; 25:1202-1218. [PMID: 28057407 PMCID: PMC5291751 DOI: 10.1016/j.bmc.2016.12.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/17/2016] [Accepted: 12/20/2016] [Indexed: 12/16/2022]
Abstract
We herein disclose a series of compounds with potent inhibitory activities towards histone deacetylases (HDAC) and cyclooxygenases (COX). These compounds potently inhibited the growth of cancer cell lines consistent with their anti-COX and anti-HDAC activities. While compound 2b showed comparable level of COX-2 selectivity as celecoxib, compound 11b outperformed indomethacin in terms of selectivity towards COX-2 relative to COX-1. An important observation with our lead compounds (2b, 8, 11b, and 17b) is their enhanced cytotoxicity towards androgen dependent prostate cancer cell line (LNCaP) relative to androgen independent prostate cancer cell line (DU-145). Interestingly, compounds 2b and 17b arrested the cell cycle progression of LNCaP in the S-phase, while compound 8 showed a G0/G1 arrest, similar to SAHA. Relative to SAHA, these compounds displayed tumor-selective cytotoxicity as they have low anti-proliferative activity towards healthy cells (VERO); an attribute that makes them attractive candidates for drug development.
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Affiliation(s)
- Idris Raji
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Fatima Yadudu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Emily Janeira
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA
| | - Shaghayegh Fathi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Lindsey Szymczak
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - James Richard Kornacki
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Kensei Komatsu
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, USA
| | - Jian-Dong Li
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, USA
| | - Milan Mrksich
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA; Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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