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Liu H, Chen Y, Huang Y, Wei L, Ran J, Li Q, Tian Y, Luo Z, Yang L, Liu H, Yin G, Xie Q. Macrophage-derived mir-100-5p orchestrates synovial proliferation and inflammation in rheumatoid arthritis through mTOR signaling. J Nanobiotechnology 2024; 22:197. [PMID: 38644475 PMCID: PMC11034106 DOI: 10.1186/s12951-024-02444-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 03/28/2024] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND Rheumatoid arthritis (RA) is a chronic autoimmune disorder characterized by synovial inflammation, causing substantial disability and reducing life quality. While macrophages are widely appreciated as a master regulator in the inflammatory response of RA, the precise mechanisms underlying the regulation of proliferation and inflammation in RA-derived fibroblast-like synoviocytes (RA-FLS) remain elusive. Here, we provide extensive evidence to demonstrate that macrophage contributes to RA microenvironment remodeling by extracellular vesicles (sEVs) and downstream miR-100-5p/ mammalian target of rapamycin (mTOR) axis. RESULTS We showed that bone marrow derived macrophage (BMDM) derived-sEVs (BMDM-sEVs) from collagen-induced arthritis (CIA) mice (cBMDM-sEVs) exhibited a notable increase in abundance compared with BMDM-sEVs from normal mice (nBMDM-sEVs). cBMDM-sEVs induced significant RA-FLS proliferation and potent inflammatory responses. Mechanistically, decreased levels of miR-100-5p were detected in cBMDM-sEVs compared with nBMDM-sEVs. miR-100-5p overexpression ameliorated RA-FLS proliferation and inflammation by targeting the mTOR pathway. Partial attenuation of the inflammatory effects induced by cBMDM-sEVs on RA-FLS was achieved through the introduction of an overexpression of miR-100-5p. CONCLUSIONS Our work reveals the critical role of macrophages in exacerbating RA by facilitating the transfer of miR-100-5p-deficient sEVs to RA-FLS, and sheds light on novel disease mechanisms and provides potential therapeutic targets for RA interventions.
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Affiliation(s)
- Huan Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yuehong Chen
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yupeng Huang
- Department of General Practice, West China Hospital, General Practice Medical Center, Sichuan University, Chengdu, 610041, China
| | - Ling Wei
- Hospital of Chengdu Office of People's Government of Tibetan Autonomous region, Chengdu, 610041, China
| | - Jingjing Ran
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qianwei Li
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yunru Tian
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhongling Luo
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Leiyi Yang
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hongjiang Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Geng Yin
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China.
- Department of General Practice, West China Hospital, General Practice Medical Center, Sichuan University, Chengdu, 610041, China.
| | - Qibing Xie
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China.
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2
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Barzegar S, Pirouzpanah S. Zinc finger proteins and ATP-binding cassette transporter-dependent multidrug resistance. Eur J Clin Invest 2024; 54:e14120. [PMID: 37930002 DOI: 10.1111/eci.14120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 07/12/2023] [Accepted: 10/02/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND Multidrug resistance (MDR) remains a significant challenge in cancer treatment, leading to poor clinical outcomes. Dysregulation of ATP-binding cassette (ABC) transporters has been identified as a key contributor to MDR. Zinc finger proteins (ZNPs) are key regulators of transcription and have emerged as potential contributors to cancer drug resistance. Bridging the knowledge gap between ZNPs and MDR is essential to understand a source of heterogeneity in cancer treatment. This review sought to elucidate how different ZNPs modulate the transcriptional regulation of ABC genes, contributing to resistance to cancer therapies. METHODS The search was conducted using PubMed, Google Scholar, EMBASE and Web of Science. RESULTS In addition to ABC-blockers, the transcriptional features regulated by ZNP are expected to play a role in reversing ABC-mediated MDR and predicting the efficacy of anticancer treatments. Among the ZNP-induced epithelial to mesenchymal transition, SNAIL, SLUG and Zebs have been identified as important factors in promoting MDR through activation of ATM, NFκB and PI3K/Akt pathways, exposing the metabolism to potential ZNP-MDR interactions. Additionally, nuclear receptors, such as VDR, ER and PXR have been found to modulate certain ABC regulations. Other C2H2-type zinc fingers, including Kruppel-like factors, Gli and Sp also have the potential to contribute to MDR. CONCLUSION Besides reviewing evidence on the effects of ZNP dysregulation on ABC-related chemoresistance in malignancies, significant markers of ZNP functions are discussed to highlight the clinical implications of gene-to-gene and microenvironment-to-gene interactions on MDR prospects. Future research on ZNP-derived biomarkers is crucial for addressing heterogeneity in cancer therapy.
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Affiliation(s)
- Sanaz Barzegar
- Shahid Madani Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Pirouzpanah
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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3
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Cao T, Lu Y, Wang Q, Qin H, Li H, Guo H, Ge M, Glass SE, Singh B, Zhang W, Dong J, Du F, Qian A, Tian Y, Wang X, Li C, Wu K, Fan D, Nie Y, Coffey RJ, Zhao X. A CGA/EGFR/GATA2 positive feedback circuit confers chemoresistance in gastric cancer. J Clin Invest 2022; 132:154074. [PMID: 35289315 PMCID: PMC8920335 DOI: 10.1172/jci154074] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 01/26/2022] [Indexed: 12/24/2022] Open
Abstract
De novo and acquired resistance are major impediments to the efficacy of conventional and targeted cancer therapy. In unselected gastric cancer (GC) patients with advanced disease, trials combining chemotherapy and an anti-EGFR monoclonal antibody have been largely unsuccessful. In an effort to identify biomarkers of resistance so as to better select patients for such trials, we screened the secretome of chemotherapy-treated human GC cell lines. We found that levels of CGA, the α-subunit of glycoprotein hormones, were markedly increased in the conditioned media of chemoresistant GC cells, and CGA immunoreactivity was enhanced in GC tissues that progressed on chemotherapy. CGA levels in plasma increased in GC patients who received chemotherapy, and this increase was correlated with reduced responsiveness to chemotherapy and poor survival. Mechanistically, secreted CGA was found to bind to EGFR and activate EGFR signaling, thereby conferring a survival advantage to GC cells. N-glycosylation of CGA at Asn52 and Asn78 is required for its stability, secretion, and interaction with EGFR. GATA2 was found to activate CGA transcription, whose increase, in turn, induced the expression and phosphorylation of GATA2 in an EGFR-dependent manner, forming a positive feedback circuit that was initiated by GATA2 autoregulation upon sublethal exposure to chemotherapy. Based on this circuit, combination strategies involving anti-EGFR therapies or targeting CGA with microRNAs (miR-708-3p and miR-761) restored chemotherapy sensitivity. These findings identify a clinically actionable CGA/EGFR/GATA2 circuit and highlight CGA as a predictive biomarker and therapeutic target in chemoresistant GC.
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Affiliation(s)
- Tianyu Cao
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Yuanyuan Lu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Qi Wang
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Hongqiang Qin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Hongwei Li
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Hao Guo
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China.,State Key Laboratory of Translational Medicine and Innovative Drug Development, Jiangsu Simcere Diagnostics Co., Ltd., Nanjing, China
| | - Minghui Ge
- State Key Laboratory of Translational Medicine and Innovative Drug Development, Jiangsu Simcere Diagnostics Co., Ltd., Nanjing, China
| | - Sarah E Glass
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Bhuminder Singh
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Wenyao Zhang
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Jiaqiang Dong
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Feng Du
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Airong Qian
- Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Ye Tian
- Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Xin Wang
- Department of Gastroenterology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Cunxi Li
- Beijing Institute of Human Reproduction and Genetics Medicine, Beijing, China.,Jiaen Genetics Laboratory, Beijing Jiaen Hospital, Beijing, China
| | - Kaichun Wu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Daiming Fan
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Robert J Coffey
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Xiaodi Zhao
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
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4
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Zeng X, Wang HY, Bai SY, Pu K, Wang YP, Zhou YN. The Roles of microRNAs in Multidrug-Resistance Mechanisms in Gastric Cancer. Curr Mol Med 2021; 20:667-674. [PMID: 32209033 DOI: 10.2174/1566524020666200226124336] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 02/10/2020] [Accepted: 02/14/2020] [Indexed: 12/24/2022]
Abstract
Multidrug resistance (MDR) is one of the most significant reasons for the
chemotherapeutics failure in gastric cancer. Although accumulating investigations and
researches have been made to elucidate the mechanisms of multidrug resistance, the
detail is far from completely understood. The importance of microRNAs in cancer
chemotherapeutic resistance has been demonstrated recently, which provides a new
strategy to overcome multidrug resistance. The different mechanisms are related to the
phenomena of MDR itself and the roles of miRNAs in these multi-mechanisms by which
MDR is acquired. In turn, the aim of this review was to summarize recent publications of
microRNAs in regulating MDR in gastric cancer, thereby potentially developing as
targeted therapies. Further unraveling the roles of microRNAs in MDR mechanisms
including the ATP-binding cassette (ABC) transporter family, autophagy induction,
cancer stem cell regulation, hypoxia induction, DNA damage and repair, epigenetic
regulation, and exosomes in gastric cancer will be helpful for us to win the battle against
it.
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Affiliation(s)
- Xi Zeng
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Hao-Ying Wang
- Department of Gastroenterology, The first Hospital of Lanzhou University, Lanzhou, China
| | - Su-Yang Bai
- Department of Gastroenterology, The first Hospital of Lanzhou University, Lanzhou, China
| | - Ke Pu
- Department of Gastroenterology, The first Hospital of Lanzhou University, Lanzhou, China
| | - Yu-Ping Wang
- Department of Gastroenterology, The first Hospital of Lanzhou University, Lanzhou, China
| | - Yong-Ning Zhou
- Department of Gastroenterology, The first Hospital of Lanzhou University, Lanzhou, China
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5
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Chen Q, Zhu M, Xie J, Dong Z, Khushafah F, Yun D, Fu W, Wang L, Wei T, Liu Z, Qiu P, Wu J, Li W. Design and Synthesis of Novel Nordihydroguaiaretic Acid (NDGA) Analogues as Potential FGFR1 Kinase Inhibitors With Anti-Gastric Activity and Chemosensitizing Effect. Front Pharmacol 2020; 11:518068. [PMID: 33041789 PMCID: PMC7517944 DOI: 10.3389/fphar.2020.518068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 08/13/2020] [Indexed: 12/31/2022] Open
Abstract
Aberrant fibroblast growth factor receptor-1 (FGFR1), a key driver promoting gastric cancer (GC) progression and chemo-resistance, has been increasingly recognized as a potential therapeutic target in GC. Hereon, we designed and synthesized a series of asymmetric analogues using Af23 and NDGA as lead compounds by retaining the basic structural framework (bisaryl-1,4-dien-3-one) and the unilateral active functional groups (3,4-dihydroxyl). Thereinto, Y14 showed considerable inhibitory activity against FGFR1. Next, pharmacological experiments showed that Y14 could significantly inhibit the phosphorylation of FGFR1 and its downstream kinase AKT and ERK, thus inhibiting the growth, survival, and migration of gastric cancer cells. Furthermore, compared with 5-FU treatment alone, the combination of Y14 and 5-FU significantly reduced the phosphorylation level of FGFR1, and enhanced the anti-cancer effect by inhibiting the viability and colony formation in two gastric cancer cell lines. These results confirmed that Y14 exerted anti-gastric activity and chemosensitizing effect by inhibiting FGFR1 phosphorylation and its downstream signaling pathway in vitro. This work also provides evidence that Y14, an effective FGFR1 inhibitor, could be used alone or in combination with chemotherapy to treat gastric cancer in the future.
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Affiliation(s)
- Qian Chen
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Min Zhu
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jingwen Xie
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zhaojun Dong
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Fatehi Khushafah
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Di Yun
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Weitao Fu
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Ledan Wang
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Tao Wei
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zhiguo Liu
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Peihong Qiu
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jianzhang Wu
- Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Wulan Li
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Chemical Biology Research Center, College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
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6
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Wang Q, Cao T, Guo K, Zhou Y, Liu H, Pan Y, Hou Q, Nie Y, Fan D, Lu Y, Zhao X. Regulation of Integrin Subunit Alpha 2 by miR-135b-5p Modulates Chemoresistance in Gastric Cancer. Front Oncol 2020; 10:308. [PMID: 32232000 PMCID: PMC7082357 DOI: 10.3389/fonc.2020.00308] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/20/2020] [Indexed: 12/24/2022] Open
Abstract
Chemotherapy has substantially improved gastric cancer (GC) patient outcomes in the past decades. However, the development of chemotherapy resistance has become the major cause of treatment failure. Although numerous molecules have been implicated in GC chemoresistance, its pathological mechanisms are still unclear. Here, we found that integrin subunit alpha 2 (ITGA2) is upregulated in chemoresistant GC cells and that increased ITGA2 levels correlated with the poor prognosis of GC patients who received chemotherapy. ITGA2 overexpression led to elevated chemotherapy resistance and drug-induced apoptosis inhibition in GC cells. ITGA2 knockdown resulted in restored chemosensitivity and increased apoptosis in chemoresistant GC cells both in vitro and in vivo. NanoString analysis revealed a unique signature of deregulated pathway expression in GC cells after ITGA2 silencing. The MAPK/ERK pathway and epithelial-mesenchymal transition (EMT) were found to be downregulated after ITGA2 knockdown. miR-135b-5p was identified as a direct upstream regulator of ITGA2. miR-135b-5p overexpression reduced chemoresistance and induced apoptosis in GC cells and attenuated ITGA2-induced chemoresistance and antiapoptotic effects by inhibiting MAPK signaling and EMT. In conclusion, this study underscored the role and mechanism of ITGA2 in GC and suggested the novel miR-135b-5p/ITGA2 axis as an epigenetic cause of chemoresistance with diagnostic and therapeutic implications.
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Affiliation(s)
- Qi Wang
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tianyu Cao
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Kai Guo
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yao Zhou
- Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, China
| | - Hao Liu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yanan Pan
- College of Life Sciences, Northwest University, Xi'an, China
| | - Qiuqiu Hou
- College of Life Sciences, Northwest University, Xi'an, China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Daiming Fan
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yuanyuan Lu
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiaodi Zhao
- State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,National Institute of Biological Sciences, Beijing, China
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7
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Zhan D, Zhang X, Li J, Ding X, Cui Y, Jia J. MTH1 Inhibitor TH287 Suppresses Gastric Cancer Development Through the Regulation of PI3K/AKT Signaling. Cancer Biother Radiopharm 2020; 35:223-232. [PMID: 32077746 DOI: 10.1089/cbr.2019.3031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background: Cancer cells evade oxidative stress through the MutT homologue-1 (MTH1), a member of the Nudix family. MTH1 maintains genome integrity and the viability of tumor cells. A new class of MTH1 inhibitors have attracted interest as anticancer agents, but their mechanisms of action remain poorly characterized. In this study, the authors evaluated the anticancer effects of the MTH1 inhibitor TH287 on gastric cancer (GCa) cells. Materials and Methods: BGC-823 and SGC-7901 cells were treated with TH287 and CCK-8, and colony-forming assays were performed. Cell migration was assessed through Transwell and scratch assays. Apoptotic status was measured via flow cytometry and 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolyl-carbocyanine iodide (JC-1) staining. Cell cycle status was assessed by propidium iodide (PI) staining. The expression of PI3K/AKT signaling-related proteins was verified by western blotting. Results: TH287 inhibited cell viability, reduced cell proliferation, inhibited apoptosis, induced G2/M arrest, and suppressed cell migration. A loss of mitochondrial membrane potential and reduced Bcl-2/Bax expression were also observed in TH287-treated cells. These effects were mediated through the inhibition of pro-oncogenic PI3K/AKT signaling. Conclusions: These findings indicate that the MTH1 inhibitor TH287 mediates an array of anticancer effects in GCa cells through its effects on mitochondrial function and PI3K/AKT signaling. Collectively, these data highlight the promise of TH287 as a novel therapeutic option for GCa cells.
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Affiliation(s)
- Dankai Zhan
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xinxin Zhang
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Jiahui Li
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, China
| | - Xiaojiao Ding
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - YiXuan Cui
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Jianguang Jia
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
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8
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BATF2 inhibits chemotherapy resistance by suppressing AP-1 in vincristine-resistant gastric cancer cells. Cancer Chemother Pharmacol 2019; 84:1279-1288. [DOI: 10.1007/s00280-019-03958-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 09/04/2019] [Indexed: 01/08/2023]
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9
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Ma Y, Yan F, Wei W, Deng J, Li L, Liu L, Sun J. MicroRNA-598 inhibits the growth and maintenance of gastric cancer stem-like cells by down-regulating RRS1. Cell Cycle 2019; 18:2757-2769. [PMID: 31438772 DOI: 10.1080/15384101.2019.1657338] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Emerging evidence has identified the critical role of microRNAs in gastric cancer (GC). Herein, this study intends to characterize the tumor suppressive role of microRNA-598 (miR-598) in GC stem-like cells, with the involvement of RRS1. The CD133+ GC stem-like cells were sorted by flow cytometry, after which immunofluorescence assay was used to determine the co-localization of CD133 and CD44v8-10. The miR-598 expression was examined in the CD133+ and CD133- cells. Subsequently, the CD133+ cells were subjected to miR-598 mimics, miR-598 inhibitors or RRS1 siRNA to validate the effect of miR-598 on GC stem-like cell proliferation, colony formation, apoptosis, migration and invasion capacities. Besides, the effect of miR-598 on the expression of key factors (OCT4, SOX2 and NANOG) associated with stem cell characteristics was measured. The obtained results indicated that the sphere forming capacity was higher in CD133+ cells. CD133+ MKN-45 cells expressed CD133 and CD44v8-10, and were expressed on the cell membrane. MiR-598 was poorly expressed in CD133+ cells. Notably, miR-598 negatively regulated RRS1. In response to miR-598 mimics and RRS1 siRNA, the MKN-45 cells displayed inhibited proliferation, colony formation, migration and invasion, accompanied by elevated apoptosis. Besides, the miR-598 inhibitors reversed the situation. This study highlights that miR-598 a tumor suppressor in GC stem-like cells by inhibiting RRS1, whereby miR-598 represses MKN-45 cell growth and invasion by attenuating self-renewal of GC stem-like cells.
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Affiliation(s)
- Yanling Ma
- Department of Oncology, Hubei No.3 People's Hospital of Jianghan University , Wuhan , China
| | - Fei Yan
- Department of Oncology, Hubei No.3 People's Hospital of Jianghan University , Wuhan , China
| | - Wujie Wei
- Department of Oncology, Hubei No.3 People's Hospital of Jianghan University , Wuhan , China
| | - Jie Deng
- Department of Oncology, Hubei No.3 People's Hospital of Jianghan University , Wuhan , China
| | - Li Li
- Department of Oncology, Hubei No.3 People's Hospital of Jianghan University , Wuhan , China
| | - Li Liu
- Department of Oncology, Hubei No.3 People's Hospital of Jianghan University , Wuhan , China
| | - Jianhai Sun
- Department of Oncology, Hubei No.3 People's Hospital of Jianghan University , Wuhan , China
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10
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Jia J, Zhan D, Li J, Li Z, Li H, Qian J. The contrary functions of lncRNA HOTAIR/miR-17-5p/PTEN axis and Shenqifuzheng injection on chemosensitivity of gastric cancer cells. J Cell Mol Med 2018; 23:656-669. [PMID: 30338929 PMCID: PMC6307763 DOI: 10.1111/jcmm.13970] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 08/20/2018] [Accepted: 09/24/2018] [Indexed: 01/30/2023] Open
Abstract
This study was implemented to figure out whether lncRNA HOTAIR/miR‐17‐5p/PTEN axis played a role that was opposite to Shenqifuzheng (SQFZ) injection in regulating the chemosensitivity of gastric cancer cells. The gastric cancer tissues were gathered and four gastric cancer cell lines were prepared, including BGC‐823, MGC‐803, SGC‐7901, and MKN28. Moreover, cisplatin, adriamycin, mitomycin, and 5‐fluoroura were managed as the chemo‐therapeutics, and SQFZ was prepared as a Chinese medicine. Striking distinctions of HOTAIR, miR‐17‐5p, and PTEN expressions were observed between gastric cancer tissues and para‐carcinoma normal tissues (P < 0.05). MKN28 was associated with the highest resistance to cisplatin, adriamycin, mitomycin, and 5‐fluoroura among all the cell types, and SQFZ significantly improved the MKN28 cells’ sensitivity to the drugs (P < 0.05). The over‐expressed HOTAIR and miR‐17‐5p, as well as under‐expressed PTEN tended to significantly facilitate the viability, EMT process and proliferation of MKN28 cells that were subject to treatment of chemo‐therapies (P < 0.05). SQFZ could amplify the effects of si‐HOTAIR, miR‐17‐5p inhibitor, and pcDNA‐PTEN on boosting the chemosensitivity of gastric cancer cells (P < 0.05). In addition, HOTAIR was also found to directly target miR‐17‐5p, and PTEN appeared to be subject to the modification of HOTAIR and miR‐17‐5p in its acting on the viability, proliferation, EMT process, and apoptosis of gastric cancer cells. The HOTAIR/miR‐17‐5p/PTEN axis could be regarded as the potential treatment targets for gastric cancer, and adjuvant therapy of SQFZ injection could assist in further improving the treatment efficacy of chemo‐therapies for gastric cancer.
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Affiliation(s)
- Jianguang Jia
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, China
| | - Dankai Zhan
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, China
| | - Jing Li
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, China
| | - Zhixiang Li
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, China
| | - Hongbo Li
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, China
| | - Jun Qian
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, China
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11
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AP-2α reverses vincristine-induced multidrug resistance of SGC7901 gastric cancer cells by inhibiting the Notch pathway. Apoptosis 2018; 22:933-941. [PMID: 28439677 DOI: 10.1007/s10495-017-1379-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Multidrug resistance (MDR) remains a major clinical obstacle in the treatment of gastric cancer (GC) since it causes tumor recurrence and metastasis. The transcription factor activator protein-2α (AP-2α) has been implicated in drug-resistance in breast cancer; however, its effects on MDR of gastric cancer are far from understood. In this study, we aimed to explore the effects of AP-2α on the MDR in gastric cancer cells selected by vincristine (VCR). Decreased AP-2α levels were markedly detected by RT-PCR and Western blot in gastric cancer cell lines (BGC-823, SGC-7901, AGS, MKN-45) compared with that in the gastric epithelial cell line (GES-1). Furthermore, we found that the expression of AP-2α in SGC7901/VCR or SGC7901/adriamycin (ADR) cells was lower than in SGC7901 cells. Thus, a vector overexpressing AP-2α was constructed and used to perform AP-2α gain-of-function studies in SGC7901/VCR cells. The decreased IC50 values of the anti-cancer drugs in sensitive and resistant cells after transfect with pcDNA3.1/AP-2α were determined in SGC7901/VCR cells by MTT assay. Moreover, flow cytometry analysis indicated that overexpressed AP-2α induced cell cycle arrest in the G0/G1 phase and promoted cell apoptosis of VCR-selected SGC7901/VCR cells. RT-PCR and Western blot demonstrated that overexpressed AP-2α can significantly induce the down-regulation of Notch1, Hes-1, P-gp and MRP1 in SGC7901/VCR cells. Similar effects can be observed when Numb (Notch inhibitor) was introduced. In addition, the intracellular ADR accumulation was markedly detected in AP-2α overexpressed or Numb cells. In conclusion, our results indicate that AP-2α can reverse the MDR of gastric cancer cells, which may be realized by inhibiting the Notch signaling pathway.
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12
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Yang W, Ma J, Zhou W, Cao B, Zhou X, Yang Z, Zhang H, Zhao Q, Fan D, Hong L. Molecular mechanisms and theranostic potential of miRNAs in drug resistance of gastric cancer. Expert Opin Ther Targets 2017; 21:1063-1075. [PMID: 28994330 DOI: 10.1080/14728222.2017.1389900] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Systemic chemotherapy is a curative approach to inhibit gastric cancer cells proliferation. Despite the great progress in anti-cancer treatment achieved during the last decades, drug resistance and treatment refractoriness still extensively persists. Recently, accumulating studies have highlighted the role of miRNAs in drug resistance of gastric cancers by modulating some drug resistance-related proteins and genes expression. Pre-clinical reports indicate that miRNAs might serve as ideal biomarkers and potential targets, thus holding great promise for developing targeted therapy and personalized treatment for the patients with gastric cancer. Areas covered: This review provide a comprehensive overview of the current advances of miRNAs and molecular mechanisms underlying miRNA-mediated drug resistance in gastric cancer. We particularly focus on the potential values of drug resistance-related miRNAs as biomarkers and novel targets in gastric cancer therapy and envisage the future research developments of these miRNAs and challenges in translating the new findings into clinical applications. Expert opinion: Although the concrete mechanisms of miRNAs in drug resistance of gastric cancer have not been fully clarified, miRNA may be a promising theranostic approach. Further studies are still needed to facilitate the clinical applications of miRNAs in drug resistant gastric cancer.
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Affiliation(s)
- Wanli Yang
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Jiaojiao Ma
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Wei Zhou
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Bo Cao
- b The First Brigade of Student , Fourth Military Medical University , Xi'an , China
| | - Xin Zhou
- b The First Brigade of Student , Fourth Military Medical University , Xi'an , China
| | - Zhiping Yang
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
| | - Hongwei Zhang
- c Department of Digestive Surgery, Xijing Hospital , Fourth Military Medical University , Xi'an , China
| | - Qingchuan Zhao
- c Department of Digestive Surgery, Xijing Hospital , Fourth Military Medical University , Xi'an , China
| | | | - Liu Hong
- a State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases , Fourth Military Medical University , Xi'an , China
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13
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Huang S, Ge X, Yu J, Han Z, Yin Z, Li Y, Chen F, Wang H, Zhang J, Lei P. Increased miR‐124‐3p in microglial exosomes following traumatic brain injury inhibits neuronal inflammation and contributes to neurite outgrowthviatheir transfer into neurons. FASEB J 2017; 32:512-528. [PMID: 28935818 DOI: 10.1096/fj.201700673r] [Citation(s) in RCA: 302] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/11/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Shan Huang
- Laboratory of Neuro‐Trauma and Neurodegenerative DisordersTianjin Geriatrics Institute Tianjin China
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Key Laboratory of Post‐trauma Neuro‐repair and Regeneration in Central Nervous SystemMinistry of Education Tianjin China
| | - Xintong Ge
- Laboratory of Neuro‐Trauma and Neurodegenerative DisordersTianjin Geriatrics Institute Tianjin China
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Department of NeurosurgeryTianjin Medical University General Hospital Tianjin China
| | - Jinwen Yu
- Laboratory of Neuro‐Trauma and Neurodegenerative DisordersTianjin Geriatrics Institute Tianjin China
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Key Laboratory of Post‐trauma Neuro‐repair and Regeneration in Central Nervous SystemMinistry of Education Tianjin China
| | - Zhaoli Han
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Department of GeriatricsTianjin Medical University General Hospital Tianjin China
| | - Zhenyu Yin
- Laboratory of Neuro‐Trauma and Neurodegenerative DisordersTianjin Geriatrics Institute Tianjin China
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Key Laboratory of Post‐trauma Neuro‐repair and Regeneration in Central Nervous SystemMinistry of Education Tianjin China
| | - Ying Li
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Key Laboratory of Post‐trauma Neuro‐repair and Regeneration in Central Nervous SystemMinistry of Education Tianjin China
| | - Fanglian Chen
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Key Laboratory of Post‐trauma Neuro‐repair and Regeneration in Central Nervous SystemMinistry of Education Tianjin China
| | - Haichen Wang
- Department of NeurologyDuke University Medical Center Durham North Carolina USA
| | - Jianning Zhang
- Key Laboratory of Injuries, Variations, and Regeneration of Nervous SystemTianjin Neurological Institute, Tianjin Medical University General Hospital Tianjin China
- Department of NeurosurgeryTianjin Medical University General Hospital Tianjin China
- Key Laboratory of Post‐trauma Neuro‐repair and Regeneration in Central Nervous SystemMinistry of Education Tianjin China
| | - Ping Lei
- Laboratory of Neuro‐Trauma and Neurodegenerative DisordersTianjin Geriatrics Institute Tianjin China
- Department of GeriatricsTianjin Medical University General Hospital Tianjin China
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14
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Shen Y, Tong M, Liang Q, Guo Y, Sun HQ, Zheng W, Ao L, Guo Z, She F. Epigenomics alternations and dynamic transcriptional changes in responses to 5-fluorouracil stimulation reveal mechanisms of acquired drug resistance of colorectal cancer cells. THE PHARMACOGENOMICS JOURNAL 2017; 18:23-28. [PMID: 28045128 PMCID: PMC5817391 DOI: 10.1038/tpj.2016.91] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/06/2016] [Accepted: 11/14/2016] [Indexed: 12/19/2022]
Abstract
A drug-induced resistant cancer cell is different from its parent cell in transcriptional response to drug treatment. The distinct transcriptional response pattern of a drug-induced resistant cancer cell to drug treatment might be introduced by acquired DNA methylation aberration in the cell exposing to sustained drug stimulation. In this study, we performed both transcriptional and DNA methylation profiles of the HCT-8 wild-type cells (HCT-8/WT) for human colorectal cancer (CRC) and the 5-fluorouracil (5-FU)-induced resistant cells (HCT-8/5-FU) after treatment with 5-FU for 0, 24 and 48 h. Integrated analysis of transcriptional and DNA methylation profiles showed that genes with promoter hypermethylation and concordant expression silencing in the HCT-8/5-FU cells are mainly involved in pathways of pyrimidine metabolism and drug metabolism-cytochrome P450. Transcriptional analysis confirmed that genes with transcriptional differences between a drug-induced resistant cell and its parent cell after drug treatment for a certain time, rather than their primary transcriptional differences, are more likely to be involved in drug resistance. Specifically, transcriptional differences between the drug-induced resistant cells and parental cells after drug treatment for 24 h were significantly consistent with the differentially expressed genes (termed as CRG5-FU) between the tissues of nonresponders and responders of CRCs to 5-FU-based therapy and the consistence increased after drug treatment for 48 h (binomial test, P-value=1.88E−06). This study reveals a major epigenetic mechanism inducing the HCT-8/WT cells to acquire resistance to 5-FU and suggests an appropriate time interval (24–48 h) of 5-FU exposure for identifying clinically relevant drug resistance signatures from drug-induced resistant cell models.
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Affiliation(s)
- Y Shen
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - M Tong
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Q Liang
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Y Guo
- Department of Preventive Medicine, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou, China
| | - H Q Sun
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - W Zheng
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - L Ao
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Z Guo
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - F She
- Department of Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
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15
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Shang Y, Feng B, Zhou L, Ren G, Zhang Z, Fan X, Sun Y, Luo G, Liang J, Wu K, Nie Y, Fan D. The miR27b-CCNG1-P53-miR-508-5p axis regulates multidrug resistance of gastric cancer. Oncotarget 2016; 7:538-49. [PMID: 26623719 PMCID: PMC4808016 DOI: 10.18632/oncotarget.6374] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 11/13/2015] [Indexed: 12/24/2022] Open
Abstract
Multidrug resistance (MDR) correlates with treatment failure and poor prognosis among gastric cancer (GC) patients. In a previous study using high-throughput functional screening, we identified 11 microRNAs (miRNAs) that regulate MDR in GC and found that miR-508-5p reversed MDR by targeting ABCB1 and ZNRD1. However, the mechanism by which miR-508-5p was decreased in chemo-resistant GC cells was unclear. In this study, we found that ectopic miR-27b is sufficient to sensitize tumors to chemotherapy in vitro and in vivo. Moreover, miR-27b directly targets the 3′ untranslated regions (3′-UTRs) of CCNG1, a well-known negative regulator of P53 stability. Interestingly, miR-27b up-regulation leads to increased miR-508-5p expression, and this phenomenon is mediated by CCNG1 and P53. Further investigation indicated that miR-508-5p is directly regulated by P53. Thus, the miR-27b/CCNG1/P53/miR-508-5p axis plays important roles in GC-associated MDR. In addition, miR-27b and miR-508-5p expression was detected in GC tissues with different chemo-sensitivities, and we found that tissues in which miR-27b and miR-508-5p are up-regulated are more sensitive to chemotherapy. Together, these data suggest that the combination of miR-27b and miR-508-5p represents a potential marker of MDR. Restoring the miR-27b and miR-508-5p levels might contribute to MDR reversion in future clinical practice.
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Affiliation(s)
- Yulong Shang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Bin Feng
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Lin Zhou
- The 88th Hospital of PLA, Tai'an 271001, China
| | - Gui Ren
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Zhiyong Zhang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Xing Fan
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Yi Sun
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Guanhong Luo
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jie Liang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Kaichun Wu
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Daiming Fan
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
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16
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Identifying clinically relevant drug resistance genes in drug-induced resistant cancer cell lines and post-chemotherapy tissues. Oncotarget 2016; 6:41216-27. [PMID: 26515599 PMCID: PMC4747401 DOI: 10.18632/oncotarget.5649] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/12/2015] [Indexed: 12/13/2022] Open
Abstract
Until recently, few molecular signatures of drug resistance identified in drug-induced resistant cancer cell models can be translated into clinical practice. Here, we defined differentially expressed genes (DEGs) between pre-chemotherapy colorectal cancer (CRC) tissue samples of non-responders and responders for 5-fluorouracil and oxaliplatin-based therapy as clinically relevant drug resistance genes (CRG5-FU/L-OHP). Taking CRG5-FU/L-OHP as reference, we evaluated the clinical relevance of several types of genes derived from HCT116 CRC cells with resistance to 5-fluorouracil and oxaliplatin, respectively. The results revealed that DEGs between parental and resistant cells, when both were treated with the corresponding drug for a certain time, were significantly consistent with the CRG5-FU/L-OHP as well as the DEGs between the post-chemotherapy CRC specimens of responders and non-responders. This study suggests a novel strategy to extract clinically relevant drug resistance genes from both drug-induced resistant cell models and post-chemotherapy cancer tissue specimens.
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17
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Wu J, Qin H, Li T, Cheng K, Dong J, Tian M, Chai N, Guo H, Li J, You X, Dong M, Ye M, Nie Y, Zou H, Fan D. Characterization of site-specific glycosylation of secreted proteins associated with multi-drug resistance of gastric cancer. Oncotarget 2016; 7:25315-27. [PMID: 27015365 PMCID: PMC5041906 DOI: 10.18632/oncotarget.8287] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 03/06/2016] [Indexed: 01/14/2023] Open
Abstract
Multi-drug resistance (MDR) remains a great obstacle to effective chemotherapy for gastric cancer. A number of secreted glycoproteins have been reported to be involved in the development of MDR in gastric cancer. However, whether glycosylation of secreted glycoproteins changes during MDR of gastric cancer is unclear. Our present work manifested that N-glycosites and site-specific glycoforms of secreted proteins in drug-resistant cell lines were distinctly different from those in the parental cell line for the first time. Further characterization highlighted the significance of some aberrantly glycosylated secretory proteins in MDR, suggesting that manipulating the glycosylation of specific glycoproteins could be a potential target for overcoming multi-drug resistance in gastric cancer.
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Affiliation(s)
- Jian Wu
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Hongqiang Qin
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ting Li
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Kai Cheng
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jiaqiang Dong
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Miaomiao Tian
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Na Chai
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Hao Guo
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Jinjing Li
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Xin You
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Mingming Dong
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Mingliang Ye
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Hanfa Zou
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Daiming Fan
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
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18
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Li C, Liang G, Yao W, Sui J, Shen X, Zhang Y, Ma S, Ye Y, Zhang Z, Zhang W, Yin L, Pu Y. Differential expression profiles of long non-coding RNAs reveal potential biomarkers for identification of human gastric cancer. Oncol Rep 2015; 35:1529-40. [PMID: 26718650 DOI: 10.3892/or.2015.4531] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 12/03/2015] [Indexed: 11/05/2022] Open
Abstract
Gastric cancer (GC) is one of the most lethal malignancies worldwide. To reduce its high mortality, sensitive and specific biomarkers for early detection are urgently needed. Recent studies have reported that tumor-specific long non-coding RNAs (lncRNAs) seem to be potential biomarkers for the early diagnosis and treatment of cancer. In the present study, lncRNA and mRNA expression profiling of GC specimens and their paired adjacent non-cancerous tissues was performed. Differentially expressed lncRNAs and mRNAs were identified through microarray analysis. The function of differential mRNA was determined by gene ontology and pathway analysis and the functions of lncRNAs were studied by constructing a co-expression network to find the relationships with corresponding mRNAs. We connected the co-expression network, mRNA functions, and the results of the microarray profile differential expression and selected 14 significantly differentially expressed key lncRNAs and 21 key mRNAs. Quantitative RT-PCR (qRT-PCR) was conducted to verify these key RNAs in 50 newly diagnosed GC patients. The data showed that RP5-919F19, CTD-2541M15 and UCA1 was significantly higher expressed. AP000459, LOC101928316, RP11-167N4 and LINC01071 expression was significantly lower in 30 advanced GC tumor tissues than adjacent non-tumor tissues P<0.05. Then, we further validated the above significant differential expression candidate lncRNAs in 20 early stage GC patients. Results showed that CTD-2541M15 and UCA1 were significantly higher expressed, AP000459, LINC01071 and MEG3 expression was significantly lower in 20 early stage GC patient tumor tissues than adjacent non-tumor tissues (P<0.05). In addition, expression of these lncRNAs shows gradual upward trend from early stage GC to advanced GC. Furthermore, conditional logistic regression analysis revealed the aberrant expression of CTD-2541M15, UCA1 and MEG3 closely linked with GC. There is a set of differentially expressed lncRNAs in GC which may be associated with the progression and development of GC. The differential expression profiles of lncRNAs in GC may be promising biomarkers for the early detection and early screening of high‑risk populations.
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Affiliation(s)
- Chengyun Li
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Geyu Liang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Wenzhuo Yao
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Jing Sui
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Xian Shen
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Yanqiu Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Shumei Ma
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Yancheng Ye
- Gansu Wuwei Tumor Hospital, Wuwei, Gansu 733000, P.R. China
| | - Zhiyi Zhang
- Gansu Wuwei Tumor Hospital, Wuwei, Gansu 733000, P.R. China
| | - Wenhua Zhang
- Gansu Wuwei Tumor Hospital, Wuwei, Gansu 733000, P.R. China
| | - Lihong Yin
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P.R. China
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19
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Yang Q, Zhang RW, Sui PC, He HT, Ding L. Dysregulation of non-coding RNAs in gastric cancer. World J Gastroenterol 2015; 21:10956-10981. [PMID: 26494954 PMCID: PMC4607897 DOI: 10.3748/wjg.v21.i39.10956] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/28/2015] [Accepted: 09/15/2015] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer (GC) is one of the most common cancers in the world and a significant threat to the health of patients, especially those from China and Japan. The prognosis for patients with late stage GC receiving the standard of care treatment, including surgery, chemotherapy and radiotherapy, remains poor. Developing novel treatment strategies, identifying new molecules for targeted therapy, and devising screening techniques to detect this cancer in its early stages are needed for GC patients. The discovery of non-coding RNAs (ncRNAs), primarily microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), helped to elucidate the mechanisms of tumorigenesis, diagnosis and treatment of GC. Recently, significant research has been conducted on non-coding RNAs and how the regulatory dysfunction of these RNAs impacts the tumorigenesis of GC. In this study, we review papers published in the last five years concerning the dysregulation of non-coding RNAs, especially miRNAs and lncRNAs, in GC. We summarize instances of aberrant expression of the ncRNAs in GC and their effect on survival-related events, including cell cycle regulation, AKT signaling, apoptosis and drug resistance. Additionally, we evaluate how ncRNA dysregulation affects the metastatic process, including the epithelial-mesenchymal transition, stem cells, transcription factor activity, and oncogene and tumor suppressor expression. Lastly, we determine how ncRNAs affect angiogenesis in the microenvironment of GC. We further discuss the use of ncRNAs as potential biomarkers for use in clinical screening, early diagnosis and prognosis of GC. At present, no ideal ncRNAs have been identified as targets for the treatment of GC.
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20
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He H, Yao M, Zhang W, Tao B, Liu F, Li S, Dong Y, Zhang C, Meng Y, Li Y, Hu G, Luo C, Zong H, Lu Y. MEK2 is a prognostic marker and potential chemo-sensitizing target for glioma patients undergoing temozolomide treatment. Cell Mol Immunol 2015; 13:658-68. [PMID: 26189368 DOI: 10.1038/cmi.2015.46] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 04/30/2015] [Accepted: 05/01/2015] [Indexed: 02/06/2023] Open
Abstract
Although temozolomide (TMZ) is the first-line chemotherapeutic agent for glioblastoma, it is often non-curative due to drug resistance. To overcome the resistance of glioblastoma cells to TMZ, it is imperative to identify prognostic markers for outcome prediction and to develop chemo-sensitizing agents. Here, the gene expression profiles of TMZ-resistant and TMZ-sensitive samples were compared by microarray analysis, and mitogen-activated protein kinase kinase 2 (MEK2) was upregulated specifically in resistant glioma cells but not in sensitive tumor cells or non-tumor tissues. Moreover, a comprehensive analysis of patient data revealed that the increased level of MEK2 expression correlated well with the advancement of glioma grade and worse prognosis in response to TMZ treatment. Furthermore, reducing the level of MEK2 in U251 glioma cell lines or xenografted glioma models through shRNA-mediated gene knockdown inhibited cell proliferation and enhanced the sensitivity of cells toward TMZ treatment. Further analysis of tumor samples from glioma patients by real-time PCR indicated that an increased MEK2 expression level was closely associated with the activation of many drug resistance genes. Finally, these resistance genes were downregulated after MEK2 was silenced in vitro, suggesting that the mechanism of MEK2-induced chemo-resistance could be mediated by the transcriptional activation of these resistance genes. Collectively, our data indicated that the expression level of MEK2 could serve as a prognostic marker for glioma chemotherapy and that MEK2 antagonists can be used as chemo-sensitizers to enhance the treatment efficacy of TMZ.
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Affiliation(s)
- Hua He
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Maojin Yao
- Department of Microbiology, Immunology and Cancer Biology, School of Medicine, University of Virginia, USA
| | - Wenhao Zhang
- Department of Hematology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Bangbao Tao
- Department of Neurosurgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Feili Liu
- Department of Neurosurgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Shu Li
- Department of Pathophysiology, Wannan Medical College, 22 Wenchang Road Wuhu 241002, China
| | - Yan Dong
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Chenran Zhang
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Yicheng Meng
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Yuxin Li
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Guohan Hu
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Chun Luo
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Hui Zong
- Department of Microbiology, Immunology and Cancer Biology, School of Medicine, University of Virginia, USA
| | - Yicheng Lu
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
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Tan B, Li Y, Zhao Q, Fan L, Liu Y, Wang D, Zhao X. Inhibition of Vav3 could reverse the drug resistance of gastric cancer cells by downregulating JNK signaling pathway. Cancer Gene Ther 2014; 21:526-31. [PMID: 25430880 DOI: 10.1038/cgt.2014.59] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 10/18/2014] [Accepted: 10/20/2014] [Indexed: 01/21/2023]
Abstract
This study aims to investigate the effect and mechanism of Vav3 on the multidrug resistance of gastric cancer. Fluorescence quantitative RT-PCR and western blot assay were used to detect Vav3 and drug resistance genes in gastric cancer tissues as well as gastric cell lines such as SGC7901, SGC7901/adriamycin (ADR) and GES-1. Besides, Vav3-specific small interfering RNA (Vav3-siRNA) was applied to inhibit Vav3 in SGC7901/ADR, and SRB assay was used to determine chemosensitivity. After that, drug resistance genes and proteins in MAPK and PI3K/AKT signaling pathway were detected after Vav3-siRNA transfection. The results showed that overexpressed Vav3 was found in gastric cancer tissues and SGC7901 and SGC7901/ADR cells. Activity of SGC7901/ADR cells transfected with Vav3-siRNA combined with 5-fluorouracil/oxaliplatin was much lower than that of control groups, and MDR1/P-gp, GST-π and Bcl-2, Bax genes were significantly downregulated in Vav3-siRNA transfection group. AKT, ERK and p38 total protein and their phosphorylation levels showed no significant change in Vav3-siRNA-transfected SGC7901/ADR cells, whereas the ratio of C-Jun phosphorylation levels to total C-Jun protein was significantly downregulated. The results suggested that Vav3 may play a role in drug resistance of gastric cancer by inhibiting drug resistance genes MDR1/P-gp, GST-π and Bcl-2 through regulating the JNK signaling pathway.
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Affiliation(s)
- B Tan
- Department of General Surgery, the Fourth Affiliated Hospital, Hebei Medical University Shijiazhuang, Shijiazhuang, China
| | - Y Li
- Department of General Surgery, the Fourth Affiliated Hospital, Hebei Medical University Shijiazhuang, Shijiazhuang, China
| | - Q Zhao
- Department of General Surgery, the Fourth Affiliated Hospital, Hebei Medical University Shijiazhuang, Shijiazhuang, China
| | - L Fan
- Department of General Surgery, the Fourth Affiliated Hospital, Hebei Medical University Shijiazhuang, Shijiazhuang, China
| | - Y Liu
- Department of General Surgery, the Fourth Affiliated Hospital, Hebei Medical University Shijiazhuang, Shijiazhuang, China
| | - D Wang
- Department of General Surgery, the Fourth Affiliated Hospital, Hebei Medical University Shijiazhuang, Shijiazhuang, China
| | - X Zhao
- Department of General Surgery, the Fourth Affiliated Hospital, Hebei Medical University Shijiazhuang, Shijiazhuang, China
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Proton pump inhibitor pantoprazole abrogates adriamycin-resistant gastric cancer cell invasiveness via suppression of Akt/GSK-β/β-catenin signaling and epithelial-mesenchymal transition. Cancer Lett 2014; 356:704-12. [PMID: 25449432 DOI: 10.1016/j.canlet.2014.10.016] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 10/11/2014] [Accepted: 10/17/2014] [Indexed: 02/07/2023]
Abstract
The effect of proton pump inhibitor (PPI) on cancer risk has received much attention recently. In this study, we investigated the mechanism underlying multidrug resistance and the effect of a PPI pantoprazole using an adriamycin-resistant gastric cancer cell model (SGC7901/ADR). Compared with the parental cell line, SGC7901/ADR cells showed reduced proliferation rate, but higher resistance to adriamycin under both anchorage-dependent and -independent conditions. Notably, SGC7901/ADR cells underwent epithelial to mesenchymal transition (EMT) and showed increased migrating and invading capabilities. At molecular level, SGC7901/ADR cells showed strong activation of Wnt/β-catenin signaling pathway compared with parental sensitive cells. Interestingly, we found that a PPI pantoprazole can effectively reverse the aggressiveness and EMT marker expression of SGC7901/ADR cells. Furthermore, pantoprazole treatment resulted in a profound reduction of both total and phosphorylated forms of Akt and GSK-3β, which in turn suppressed the adriamycin-induced Wnt/β-catenin signaling in SGC7901/ADR cells. Taken together, we demonstrate that the aggressive phenotype of adriamycin-resistant SGC7901/ADR cells is mediated by induction of EMT and activation of the canonical Wnt/β-catenin signaling pathway. And for the first time, we show that it is possible to suppress the invasiveness of SGC7901/ADR cells by pantoprazole which targets the EMT and Akt/GSK-3β/β-catenin signaling.
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Kuete V, Ango PY, Yeboah SO, Mbaveng AT, Mapitse R, Kapche GDWF, Ngadjui BT, Efferth T. Cytotoxicity of four Aframomum species (A. arundinaceum, A. alboviolaceum, A. kayserianum and A. polyanthum) towards multi-factorial drug resistant cancer cell lines. Altern Ther Health Med 2014; 14:340. [PMID: 25239700 PMCID: PMC4177760 DOI: 10.1186/1472-6882-14-340] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 09/16/2014] [Indexed: 11/20/2022]
Abstract
Background The search for natural products as potential cytotoxic agents has yielded promising candidates. However multidrug resistance (MDR) is still a major hurdle for patients receiving chemotherapy. In the present study, we evaluated the cytotoxicity of the methanol extracts of four dietary Aframomum plant species (A. arundinaceum, A. alboviolaceum, A. kayserianum and A. polyanthum) against nine sensitive and MDR cancer cell lines. We have also identified the bioactive constituents of A. arundinaceum. Methods The cytotoxicity of the methanol extracts of the above plants was determined using a resazurin reduction assay. Chromatographic techniques were used to isolate the constituents of A. arundinaceum. Results A preliminary experiment on leukemia CCRF-CEM cells at 40 μg/mL showed that the extracts from A. kayserianum and A. alboviolaceum as well as the isolated compounds namely compounds aframodial (1), 8(17),12-labdadien-15,16-dial (2), galanolactone (3), 1-p-menthene-3,6-diol (6) and 1,4-dimethoxybenzene (7) were less active, inducing more than 50% growth of this cell line contrary to A. polyanthum and A. arundinaceum extracts, galanals A (4) and B (5), naringenin (8) and kaempferol-3,7,4’-trimethylether (9). The IC50 values below or around 30 μg/mL were recorded with A. arundinaceum extract against eight of the nine tested cancer cell lines. This extract as well as compound 8 displayed IC50 values below 40 μg/mL towards the nine tested cancer cell lines whilst A. polyanthum extract, compounds 4, 5 and 9 showed selective activities. Collateral sensitivity (hypersensitivity) was observed with A. arundinaceum extract towards leukemia CEM/ADR5000 cells and glioblastoma U87MG.ΔEGFR compared to their respective sensitive counterparts CEM/CEM and U87MG. Conclusion The results of this study provide evidence of the cytotoxicity selected Aframomum species as well as a baseline information for the potential use of Aframomum arundinaceum in the fight against drug sensitive and otherwise drug-resistant cancers.
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