1
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Synthesis, in vitro and in silico studies on novel 3-aryloxymethyl-5-[(2-oxo-2-arylethyl)sulfanyl]-1,2,4-triazoles and their oxime derivatives as potent inhibitors of mPGES-1. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2
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Zhang YY, Yao YD, Luo JF, Liu ZQ, Huang YM, Wu FC, Sun QH, Liu JX, Zhou H. Microsomal prostaglandin E 2 synthase-1 and its inhibitors: Molecular mechanisms and therapeutic significance. Pharmacol Res 2021; 175:105977. [PMID: 34798265 DOI: 10.1016/j.phrs.2021.105977] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/03/2021] [Accepted: 11/07/2021] [Indexed: 12/17/2022]
Abstract
Inflammation is closely linked to the abnormal phospholipid metabolism chain of cyclooxygenase-2/microsomal prostaglandin E2 synthase-1/prostaglandin E2 (COX-2/mPGES-1/PGE2). In clinical practice, non-steroidal anti-inflammatory drugs (NSAIDs) as upstream COX-2 enzyme activity inhibitors are widely used to block COX-2 cascade to relieve inflammatory response. However, NSAIDs could also cause cardiovascular and gastrointestinal side effects due to its inhibition on other prostaglandins generation. To avoid this, targeting downstream mPGES-1 instead of upstream COX is preferable to selectively block overexpressed PGE2 in inflammatory diseases. Some mPGES-1 inhibitor candidates including synthetic compounds, natural products and existing anti-inflammatory drugs have been proved to be effective in in vitro experiments. After 20 years of in-depth research on mPGES-1 and its inhibitors, ISC 27864 have completed phase II clinical trial. In this review, we intend to summarize mPGES-1 inhibitors focused on their inhibitory specificity with perspectives for future drug development.
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Affiliation(s)
- Yan-Yu Zhang
- Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao, PR China; Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, Macau University of Science and Technology, Taipa, Macao, PR China
| | - Yun-Da Yao
- Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao, PR China; Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, Macau University of Science and Technology, Taipa, Macao, PR China
| | - Jin-Fang Luo
- Guizhou University of Traditional Chinese Medicine, Huaxi District, Guiyang City, Guizhou Province 550025, PR China
| | - Zhong-Qiu Liu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, Guangzhou University of Chinese Medicine, Guangzhou City, Guangdong Province 510006, PR China
| | - Yu-Ming Huang
- Hunan Zhengqing Pharmaceutical Company Group Ltd, Huaihua City, Hunan Province, PR China
| | - Fei-Chi Wu
- Hunan Zhengqing Pharmaceutical Company Group Ltd, Huaihua City, Hunan Province, PR China
| | - Qin-Hua Sun
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua City, Hunan Province 418000, PR China.
| | - Jian-Xin Liu
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou City, Zhejiang Province 310053, PR China.
| | - Hua Zhou
- Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao, PR China; Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, Macau University of Science and Technology, Taipa, Macao, PR China; Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, Guangzhou University of Chinese Medicine, Guangzhou City, Guangdong Province 510006, PR China; Zhuhai Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai City, Guangdong Province 519000, PR China.
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3
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Dos Santos LD, Froes TQ, Contin de Melo MC, Petto de Souza GE, Soares DDM, Castilho MS. Triazol-phenyl antipyretic derivatives inhibit mPGES-1 mRNA levels in LPS-Induced RAW 264.7 macrophage cells. Antiinflamm Antiallergy Agents Med Chem 2020; 20:271-281. [PMID: 33292158 DOI: 10.2174/1871523019999201208202831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Microsomal prostaglandin E synthase-1 (mPGES-1) catalyzes the terminal step of prostaglandin E2 (PGE2) production, which plays an important role in the regulation of febrile response. In our previous work, ligand-based pharmacophore models, built with mPGES-1 inhibitors, were employed to identify a novel series of compounds that reduce the febrile response in rats. OBJECTIVES Evaluate the mechanism of action of the most active compound (1). METHODS For in vivo assays, rats were pretreated with the antipyretic compounds 1-8, 30 min before LPS injection. For in vitro assays, RAW 264.7 macrophage cells were incubated with the antipyretic compounds 1-8 for 1 hour before LPS stimu-lus. After 16 h, quantitative real-time PCR was carried out. Additionally, the PGE2 concentration in hypothalamus was quantified by ELISA and the inhibitory effect of N-cyclopentyl-N'-[3-(3-cyclopropyl-1H-1,2,4-triazol-5-yl)phenyl]ethanediamide (1) over human COX-2 enzymatic activity was determined with a COX Colorimetric Inhibitor Screening Assay Kit. RESULTS Compound 1 and CAY10526 have comparable efficacy to reduce the febrile response when injected i.v. (com-pound 1: 63.10%, CAY10526: 70.20%). Moreover, compound 1 significantly reduces the mPGES-1 mRNA levels, in RAW264.7 cells, under inflammatory conditions. A chemically-similar compound (8- ) also significantly reduces the mRNA levels of the gene target. On the other hand, compounds 6 and 7, which are also somewhat similar to compound 1, do not, significantly, impact mPGES-1 mRNA levels. CONCLUSIONS PGE2 concentration reduction in hypothalamus, due to compound 1 central injection, is related to decreased mPGES-1 mRNA levels but not to COX-2 inhibition (IC50> 50 μM). Therefore, compound 1 is a promising lead for inno-vative antipyretic drug development.
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Affiliation(s)
- Lenisa Dandara Dos Santos
- Laboratory of Pharmacology of inflammation and fever, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
| | - Thamires Quadros Froes
- Laboratory of Pharmacology of inflammation and fever, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
| | - Miriam Cristina Contin de Melo
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP,. Brazil
| | - Gloria Emília Petto de Souza
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP,. Brazil
| | - Denis de Melo Soares
- Laboratory of Pharmacology of inflammation and fever, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
| | - Marcelo Santos Castilho
- Laboratory of Bioinformatics and Molecular Modeling, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
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4
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Li Y, Chen J, Yang W, Liu H, Wang J, Xiao J, Xie S, Ma L, Nie D. mPGES-1/PGE2 promotes the growth of T-ALL cells in vitro and in vivo by regulating the expression of MTDH via the EP3/cAMP/PKA/CREB pathway. Cell Death Dis 2020; 11:221. [PMID: 32251289 PMCID: PMC7136213 DOI: 10.1038/s41419-020-2380-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 02/26/2020] [Accepted: 02/26/2020] [Indexed: 01/01/2023]
Abstract
T-cell acute lymphoblastic leukaemia (T-ALL) is an aggressive haematological malignancy that is characterized by a high frequency of induction failure and by early relapse. Many studies have revealed that metadherin (MTDH) is highly expressed in a variety of malignant solid tumours and plays an important role in the occurrence and development of tumours. However, the relationship between the expression of MTDH and T-ALL has not yet been reported, and the regulatory factors of MTDH are still unknown. Our previous studies found that mPGES-1/PGE2 was important for promoting the growth of leukaemia cells. In the present study, we found that MTDH was highly expressed in primary T-ALL cells and in the Jurkat cell line. Our results showed that mPGES-1/PGE2 regulates the expression of MTDH through the EP3/cAMP/PKA-CREB pathway in T-ALL cells. Downregulation of MTDH inhibits the growth of Jurkat cells in vitro and in vivo. Our results suggest that MTDH could be a potential target for the treatment of T-ALL.
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Affiliation(s)
- Yiqing Li
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jiaoting Chen
- Department of Hematology, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wenjuan Yang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Hongyun Liu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jieyu Wang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jie Xiao
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Shuangfeng Xie
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Liping Ma
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China. .,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.
| | - Danian Nie
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China. .,Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.
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5
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Loew A, Köhnke T, Rehbeil E, Pietzner A, Weylandt KH. A Role for Lipid Mediators in Acute Myeloid Leukemia. Int J Mol Sci 2019; 20:ijms20102425. [PMID: 31100828 PMCID: PMC6567850 DOI: 10.3390/ijms20102425] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 12/14/2022] Open
Abstract
In spite of therapeutic improvements in the treatment of different hematologic malignancies, the prognosis of acute myeloid leukemia (AML) treated solely with conventional induction and consolidation chemotherapy remains poor, especially in association with high risk chromosomal or molecular aberrations. Recent discoveries describe the complex interaction of immune effector cells, as well as the role of the bone marrow microenvironment in the development, maintenance and progression of AML. Lipids, and in particular omega-3 as well as omega-6 polyunsaturated fatty acids (PUFAs) have been shown to play a vital role as signaling molecules of immune processes in numerous benign and malignant conditions. While the majority of research in cancer has been focused on the role of lipid mediators in solid tumors, some data are showing their involvement also in hematologic malignancies. There is a considerable amount of evidence that AML cells are targetable by innate and adaptive immune mechanisms, paving the way for immune therapy approaches in AML. In this article we review the current data showing the lipid mediator and lipidome patterns in AML and their potential links to immune mechanisms.
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MESH Headings
- Adaptive Immunity/drug effects
- Bone Marrow
- Disease Progression
- Fatty Acids, Omega-3/immunology
- Fatty Acids, Omega-3/therapeutic use
- Fatty Acids, Omega-6/immunology
- Fatty Acids, Omega-6/therapeutic use
- Fatty Acids, Unsaturated
- Hematologic Neoplasms/drug therapy
- Hematopoiesis
- Humans
- Immunity, Innate/drug effects
- Immunotherapy
- Inflammation
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/immunology
- Lipids/immunology
- Lipids/therapeutic use
- Neoplasms/drug therapy
- Prognosis
- Tumor Microenvironment
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Affiliation(s)
- Andreas Loew
- Department of Medicine B, Ruppin General Hospital, Brandenburg Medical School, 16816 Neuruppin, Germany.
| | - Thomas Köhnke
- Department of Internal Medicine III, University of Munich, 81377 Munich, Germany.
| | - Emma Rehbeil
- Department of Medicine B, Ruppin General Hospital, Brandenburg Medical School, 16816 Neuruppin, Germany.
| | - Anne Pietzner
- Department of Medicine B, Ruppin General Hospital, Brandenburg Medical School, 16816 Neuruppin, Germany.
| | - Karsten-H Weylandt
- Department of Medicine B, Ruppin General Hospital, Brandenburg Medical School, 16816 Neuruppin, Germany.
- Medical Department, Campus Virchow Klinikum, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
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6
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Carter BZ, Mak PY, Wang X, Tao W, Ruvolo V, Mak D, Mu H, Burks JK, Andreeff M. An ARC-Regulated IL1β/Cox-2/PGE2/β-Catenin/ARC Circuit Controls Leukemia-Microenvironment Interactions and Confers Drug Resistance in AML. Cancer Res 2019; 79:1165-1177. [PMID: 30674535 DOI: 10.1158/0008-5472.can-18-0921] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 09/17/2018] [Accepted: 01/16/2019] [Indexed: 12/29/2022]
Abstract
The apoptosis repressor with caspase recruitment domain (ARC) protein is a strong independent adverse prognostic marker in acute myeloid leukemia (AML). We previously reported that ARC regulates leukemia-microenvironment interactions through the NFκB/IL1β signaling network. Malignant cells have been reported to release IL1β, which induces PGE2 synthesis in mesenchymal stromal cells (MSC), in turn activating β-catenin signaling and inducing the cancer stem cell phenotype. Although Cox-2 and its enzymatic product PGE2 play major roles in inflammation and cancer, the regulation and role of PGE2 in AML are largely unknown. Here, we report that AML-MSC cocultures greatly increase Cox-2 expression in MSC and PGE2 production in an ARC/IL1β-dependent manner. PGE2 induced the expression of β-catenin, which regulated ARC and augmented chemoresistance in AML cells; inhibition of β-catenin decreased ARC and sensitized AML cells to chemotherapy. NOD/SCIDIL2RγNull-3/GM/SF mice transplanted with ARC-knockdown AML cells had significantly lower leukemia burden, lower serum levels of IL1β/PGE2, and lower tissue human ARC and β-catenin levels, prolonged survival, and increased sensitivity to chemotherapy than controls. Collectively, we present a new mechanism of action of antiapoptotic ARC by which ARC regulates PGE2 production in the tumor microenvironment and microenvironment-mediated chemoresistance in AML.Significance: The antiapoptotic protein ARC promotes AML aggressiveness by enabling detrimental cross-talk with bone marrow mesenchymal stromal cells.
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Affiliation(s)
- Bing Z Carter
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Po Yee Mak
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiangmeng Wang
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Wenjing Tao
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Vivian Ruvolo
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Duncan Mak
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Hong Mu
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jared K Burks
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Michael Andreeff
- Section of Molecular Hematology and Therapy, Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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7
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Puratchikody A, Umamaheswari A, Irfan N, Sinha S, Manju SL, Ramanan M, Ramamoorthy G, Doble M. A novel class of tyrosine derivatives as dual 5-LOX and COX-2/mPGES1 inhibitors with PGE2 mediated anticancer properties. NEW J CHEM 2019. [DOI: 10.1039/c8nj04385j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Leukotriene and prostaglandin pathways are controlled by the enzymes, LOX and COX/mPGES1 respectively and are responsible for inflammatory responses.
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Affiliation(s)
- Ayarivan Puratchikody
- Drug Discovery and Development Research Group
- Department of Pharmaceutical Technology
- Bharathidasan Institute of Technology
- Anna University
- Tiruchirappalli
| | - Appavoo Umamaheswari
- Drug Discovery and Development Research Group
- Department of Pharmaceutical Technology
- Bharathidasan Institute of Technology
- Anna University
- Tiruchirappalli
| | - Navabshan Irfan
- Drug Discovery and Development Research Group
- Department of Pharmaceutical Technology
- Bharathidasan Institute of Technology
- Anna University
- Tiruchirappalli
| | - Shweta Sinha
- Bioengineering and Drug Design Lab
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology
- Madras
| | - S. L. Manju
- Department of Chemistry
- Vellore Institute of Technology
- Vellore
- India
| | - Meera Ramanan
- Bioengineering and Drug Design Lab
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology
- Madras
| | - Gayathri Ramamoorthy
- Bioengineering and Drug Design Lab
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology
- Madras
| | - Mukesh Doble
- Bioengineering and Drug Design Lab
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology
- Madras
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8
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Li YQ, Chen JT, Yin SM, Nie DN, He ZY, Xie SF, Wang XJ, Wu YD, Xiao J, Liu HY, Wang JY, Yang WJ, Ma LP. Regulation of mPGES-1 composition and cell growth via the MAPK signaling pathway in jurkat cells. Exp Ther Med 2018; 16:3211-3219. [PMID: 30214544 DOI: 10.3892/etm.2018.6538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 06/22/2018] [Indexed: 12/15/2022] Open
Abstract
Previous studies have suggested that microsomal prostaglandin E synthase-1 (mPGES-1) is highly expressed and closely associated with mitogen-activated protein kinase (MAPK) signaling pathways in various types of malignant cells. However, their expression patterns and function with respect to T-cell acute lymphoblastic leukemia (T-ALL) remain largely unknown. The present study investigated whether mPGES-1 served a crucial role in T-ALL and aimed to identify interactions between mPGES-1 and the MAPK signaling pathway in T-ALL. The results indicated that mPGES-1 overexpression in T-ALL jurkat cells was significantly decreased by RNA silencing. Decreasing mPGES-1 on a consistent basis may inhibit cell proliferation, induce apoptosis and arrest the cell cycle in T-ALL jurkat cells. Microarray and western blot analyses revealed that c-Jun N-terminal kinase served a role in the mPGES-1/prostaglandin E2/EP4/MAPK positive feedback loops. In addition, P38 and extracellular signal-regulated kinase 1/2 exhibited negative feedback effects on mPGES-1. In conclusion, the results suggested that cross-talk between mPGES-1 and the MAPK signaling pathway was very complex. Therefore, the combined regulation of mPGES-1 and the MAPK signaling pathway may be developed into a new candidate therapy for T-ALL in the future.
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Affiliation(s)
- Yi-Qing Li
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jiao-Ting Chen
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China.,Department of Hematology, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510655, P.R. China
| | - Song-Mei Yin
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Da-Nian Nie
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Zhi-Yuan He
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Shuang-Feng Xie
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Xiu-Ju Wang
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Yu-Dan Wu
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jie Xiao
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Hong-Yun Liu
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jie-Yu Wang
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Wen-Juan Yang
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Li-Ping Ma
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
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9
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Nie D, Huang K, Yin S, Li Y, Xie S, Ma L, Wang X, Wu Y, Xiao J, Wang J, Yang W, Liu H. KPT-330 inhibition of chromosome region maintenance 1 is cytotoxic and sensitizes chronic myeloid leukemia to Imatinib. Cell Death Discov 2018; 4:48. [PMID: 29707241 PMCID: PMC5913223 DOI: 10.1038/s41420-018-0049-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/03/2018] [Accepted: 03/08/2018] [Indexed: 12/17/2022] Open
Abstract
As tyrosine kinase inhibitors (e.g., Imatinib, IM) fail to induce long-term response in some chronic myeloid leukemia (CML), novel therapies targeting leukemia-dysregulated pathways are necessary. Nuclear-cytoplasmic trafficking of proteins play a key role in the development of leukemia and drug resistance. KPT-330 (Selinexor), an inhibitor of chromosome region maintenance 1 (CRM1, nuclear receptor exportin 1, XPO1), demonstrated activities against a few hematological malignancies. We examined the anti-leukemic efficacy of KPT-330 in IM-resistant CML. Cell viability was examined by MTS assay. Apoptosis and cell cycle were assessed by flow cytometry. CRM1 mRNA was detected by PCR. Expression of CRM1 protein and its cargo proteins were determined by western blot or immunofluorescent staining. Furthermore, we engrafted nude mice subcutaneously with IM-resistant CML K562G. Mice were treated with IM, KPT-330 alone or in combination. Expression of CRM1 in CML were markedly higher than control. KPT-330 inhibited proliferation, induced cell cycle arrest and apoptosis of K562 and K562G. IC50 of IM on K562G was reduced by KPT-330. Mechanistically, KPT-330 inhibited CRM1 and increased the nuclear/cytoplasm ratio of BCR-ABL and P27. p-AKT was downregulated while p-STAT1 and caspase-3 were upregulated. Furthermore, KPT-330 showed anti-leukemic effect in primary IM-resistant CML with T315I mutation in CRM1-dependent manner. In K562G xenograft mice model, KPT-330 inhibited tumor growth and sensitized K562G to IM in vivo. To conclude, KPT-330 showed anti-leukemic activity and sensitized CML to IM in CRM1-dependent manner in vitro and in vivo. KPT-330 represents an alternative therapy for IM-refractory CML, warranting further investigation of CRM1 as therapeutic target.
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Affiliation(s)
- Danian Nie
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Kezhi Huang
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China.,2Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Songmei Yin
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Yiqing Li
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China.,3Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, 2130 West Holcombe Boulevard, Suite 910, Houston, TX 77030 USA
| | - Shuangfeng Xie
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Liping Ma
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Xiuju Wang
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Yudan Wu
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Jie Xiao
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Jieyu Wang
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Wenjuan Yang
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
| | - Hongyun Liu
- 1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 510120 Guangzhou, China
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10
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De Lellis L, Cimini A, Veschi S, Benedetti E, Amoroso R, Cama A, Ammazzalorso A. The Anticancer Potential of Peroxisome Proliferator-Activated Receptor Antagonists. ChemMedChem 2018; 13:209-219. [PMID: 29276815 DOI: 10.1002/cmdc.201700703] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 12/17/2017] [Indexed: 12/13/2022]
Abstract
The effects on cancer-cell proliferation and differentiation mediated by peroxisome proliferator-activated receptors (PPARs) have been widely studied, and pleiotropic outcomes in different cancer models and under different experimental conditions have been obtained. Interestingly, few studies report and little preclinical evidence supports the potential antitumor activity of PPAR antagonists. This review focuses on recent findings on the antitumor in vitro and in vivo effects observed for compounds able to inhibit the three PPAR subtypes in different tumor models, providing a rationale for the use of PPAR antagonists in the treatment of tumors expressing the corresponding receptors.
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Affiliation(s)
- Laura De Lellis
- Department of Pharmacy, University of Chieti, Via dei Vestini 31, 66100, Chieti, Italy.,Unit of General Pathology, CeSI-MeT, University of Chieti, Chieti, Italy
| | - Annamaria Cimini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.,National Institute for Nuclear Physics (INFN), Gran Sasso National Laboratory (LNGS), Assergi (Aq), Italy.,Sbarro Institute for Cancer Research and Molecular Medicine and Center for Biotechnology, Temple University, 1900 N. 12th Street, Philadelphia, PA, 19122, USA
| | - Serena Veschi
- Department of Pharmacy, University of Chieti, Via dei Vestini 31, 66100, Chieti, Italy.,Unit of General Pathology, CeSI-MeT, University of Chieti, Chieti, Italy
| | - Elisabetta Benedetti
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Rosa Amoroso
- Department of Pharmacy, University of Chieti, Via dei Vestini 31, 66100, Chieti, Italy
| | - Alessandro Cama
- Department of Pharmacy, University of Chieti, Via dei Vestini 31, 66100, Chieti, Italy.,Unit of General Pathology, CeSI-MeT, University of Chieti, Chieti, Italy
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11
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Cheng C, Othman EM, Stopper H, Edrada-Ebel R, Hentschel U, Abdelmohsen UR. Isolation of Petrocidin A, a New Cytotoxic Cyclic Dipeptide from the Marine Sponge-Derived Bacterium Streptomyces sp. SBT348. Mar Drugs 2017; 15:md15120383. [PMID: 29211005 PMCID: PMC5742843 DOI: 10.3390/md15120383] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/06/2017] [Accepted: 11/16/2017] [Indexed: 01/22/2023] Open
Abstract
A new cyclic dipeptide, petrocidin A (1), along with three known compounds-2,3-dihydroxybenzoic acid (2), 2,3-dihydroxybenzamide (3), and maltol (4)-were isolated from the solid culture of Streptomyces sp. SBT348. The strain Streptomyces sp. SBT348 had been prioritized in a strain collection of 64 sponge-associated actinomycetes based on its distinct metabolomic profile using liquid chromatography/high-resolution mass spectrometry (LC-HRMS) and nuclear magnetic resonance (NMR). The absolute configuration of all α-amino acids was determined by HPLC analysis after derivatization with Marfey's reagent and comparison with commercially available reference amino acids. Structure elucidation was pursued in the presented study by mass spectrometry and NMR spectral data. Petrocidin A (1) and 2,3-dihydroxybenzamide (3) exhibited significant cytotoxicity towards the human promyelocytic HL-60 and the human colon adenocarcinoma HT-29 cell lines. These results demonstrated the potential of sponge-associated actinomycetes for the discovery of novel and pharmacologically active natural products.
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Affiliation(s)
- Cheng Cheng
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, D-97082 Würzburg, Germany.
| | - Eman M Othman
- Department of Toxicology, University of Würzburg, Versbacher Str. 9, D-97078 Würzburg, Germany.
- Department of Analytical Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.
| | - Helga Stopper
- Department of Toxicology, University of Würzburg, Versbacher Str. 9, D-97078 Würzburg, Germany.
| | - RuAngelie Edrada-Ebel
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, The John Arbuthnott Building, 27 Taylor Street, Glasgow G4 0NR, UK.
| | - Ute Hentschel
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, D-97082 Würzburg, Germany.
- GEOMAR Helmholtz Centre for Ocean Research, RD3 Marine Microbiology, and Christian-Albrechts University of Kiel, Düsternbrooker Weg 20, D-24105 Kiel, Germany.
| | - Usama Ramadan Abdelmohsen
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, D-97082 Würzburg, Germany.
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.
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12
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Devi NS, Ramanan M, Paragi-Vedanthi P, Doble M. Phytochemicals as multi-target inhibitors of the inflammatory pathway- A modeling and experimental study. Biochem Biophys Res Commun 2017; 484:467-473. [DOI: 10.1016/j.bbrc.2017.01.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/08/2017] [Accepted: 01/10/2017] [Indexed: 02/01/2023]
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13
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Ramanan M, Sinha S, Sudarshan K, Aidhen IS, Doble M. Inhibition of the enzymes in the leukotriene and prostaglandin pathways in inflammation by 3-aryl isocoumarins. Eur J Med Chem 2016; 124:428-434. [DOI: 10.1016/j.ejmech.2016.08.066] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 08/09/2016] [Accepted: 08/29/2016] [Indexed: 12/31/2022]
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14
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Larsson K, Jakobsson PJ. Inhibition of microsomal prostaglandin E synthase-1 as targeted therapy in cancer treatment. Prostaglandins Other Lipid Mediat 2015; 120:161-5. [DOI: 10.1016/j.prostaglandins.2015.06.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 05/22/2015] [Accepted: 06/02/2015] [Indexed: 11/29/2022]
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15
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Jiang KL, Ma PP, Yang XQ, Zhong L, Wang H, Zhu XY, Liu BZ. Neutrophil elastase and its therapeutic effect on leukemia cells. Mol Med Rep 2015; 12:4165-4172. [PMID: 26081156 PMCID: PMC4526057 DOI: 10.3892/mmr.2015.3946] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Accepted: 05/20/2015] [Indexed: 12/16/2022] Open
Abstract
Neutrophil elastase (NE) is an early myeloid-specific serine protease, which is predominantly produced by promyelocytes. A previous study demonstrated that NE has an important role in the development of acute promyelocytic leukemia (APL). The process of APL was shown to be accelerated in animals that expressed abundant NE, whereas NE-deficient mice were protected from APL development; thus suggesting an important role for NE in the development of APL. The present study aimed to investigate the effects and possible mechanisms of NE. Up- and downregulation of NE in various leukemia cell lines was conducted in order to explore its significance in the occurrence and procession of leukemia, with the aim of identifying novel targeted therapeutic drugs for the treatment of leukemia. NE was overexpressed in cells following infection with an adenovirus, and Cell Counting kit-8 and flow cytometry results demonstrated that cell proliferation was promoted, and cell apoptosis was inhibited, as compared with the untreated cells. NE was downregulated in the cells by both RNA interference and treatment with GW311616A, a specific inhibitor of NE, following which cell growth was shown to be inhibited and apoptosis was induced. These results suggested that NE may promote the development of APL, therefore, NE may be a therapeutic target and its inhibitor GW311616A may be a potential therapeutic drug for leukemia. Furthermore, the apoptosis-associated protein B-cell lymphoma 2 (Bcl-2)-associated X protein was significantly increased, whereas Bcl-2 was markedly decreased in the cells with downregulated NE. Further experiments revealed that the probable apoptosis-associated signaling pathway was the phosphoinositide 3-kinase/AKT pathway. The present study is the first, to the best of our knowledge, to demonstrate that GW311616A, a specific NE inhibitor, may act as a potential targeted drug for leukemia, which may have a profound impact on the future of leukemia-targeted therapy.
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Affiliation(s)
- Kai-Ling Jiang
- Central Laboratory of Yong‑Chuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
| | - Peng-Peng Ma
- Central Laboratory of Yong‑Chuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
| | - Xiao-Qun Yang
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Liang Zhong
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Hui Wang
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xin-Yu Zhu
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Bei-Zhong Liu
- Central Laboratory of Yong‑Chuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China
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16
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Schieferdecker S, König S, Koeberle A, Dahse HM, Werz O, Nett M. Myxochelins target human 5-lipoxygenase. JOURNAL OF NATURAL PRODUCTS 2015; 78:335-338. [PMID: 25686392 DOI: 10.1021/np500909b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Extracts of the predatory myxobacterium Pyxidicoccus fallax HKI 727 showed antiproliferative effects on leukemic K-562 cells. Bioactivity-guided fractionation led to the isolation of the bis-catechol myxochelin A and two new congeners. The biosynthetic origin of myxochelins C and D was confirmed by feeding studies with isotopically labeled precursors. Pharmacological testing revealed human 5-lipoxygenase (5-LO) as a molecular target of the myxochelins. In particular, myxochelin A efficiently inhibited 5-LO activity with an IC50 of 1.9 μM and reduced the proliferation of K-562 cells at similar concentrations.
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Affiliation(s)
- Sebastian Schieferdecker
- Junior Research Group Secondary Metabolism of Predatory Bacteria and §Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute , Beutenbergstrasse 11a, 07745 Jena, Germany
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17
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Chen Y, Liu H, Xu S, Wang T, Li W. Targeting microsomal prostaglandin E2synthase-1 (mPGES-1): the development of inhibitors as an alternative to non-steroidal anti-inflammatory drugs (NSAIDs). MEDCHEMCOMM 2015. [DOI: 10.1039/c5md00278h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AA cascade and several key residues in the 3D structure of mPGES-1.
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Affiliation(s)
- Yuqing Chen
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | | | - Shuang Xu
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | - Tianlin Wang
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | - Wei Li
- Department of Medicinal Chemistry, School of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
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18
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Revealing the macromolecular targets of complex natural products. Nat Chem 2014; 6:1072-8. [DOI: 10.1038/nchem.2095] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 09/23/2014] [Indexed: 01/01/2023]
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19
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Ketkar A, Zafar MK, Maddukuri L, Yamanaka K, Banerjee S, Egli M, Choi JY, Lloyd RS, Eoff RL. Leukotriene biosynthesis inhibitor MK886 impedes DNA polymerase activity. Chem Res Toxicol 2013; 26:221-32. [PMID: 23305233 DOI: 10.1021/tx300392m] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Specialized DNA polymerases participate in replication stress responses and in DNA repair pathways that function as barriers against cellular senescence and genomic instability. These events can be co-opted by tumor cells as a mechanism to survive chemotherapeutic and ionizing radiation treatments and as such, represent potential targets for adjuvant therapies. Previously, a high-throughput screen of ∼16,000 compounds identified several first generation proof-of-principle inhibitors of human DNA polymerase kappa (hpol κ). The indole-derived inhibitor of 5-lipoxygenase activating protein (FLAP), MK886, was one of the most potent inhibitors of hpol κ discovered in that screen. However, the specificity and mechanism of inhibition remained largely undefined. In the current study, the specificity of MK886 against human Y-family DNA polymerases and a model B-family DNA polymerase was investigated. MK886 was found to inhibit the activity of all DNA polymerases tested with similar IC(50) values, the exception being a 6- to 8-fold increase in the potency of inhibition against human DNA polymerase iota (hpol ι), a highly error-prone enzyme that uses Hoogsteen base-pairing modes during catalysis. The specificity against hpol ι was partially abrogated by inclusion of the recently annotated 25 a.a. N-terminal extension. On the basis of Michaelis-Menten kinetic analyses and DNA binding assays, the mechanism of inhibition by MK886 appears to be mixed. In silico docking studies were used to produce a series of models for MK886 binding to Y-family members. The docking results indicate that two binding pockets are conserved between Y-family polymerases, while a third pocket near the thumb domain appears to be unique to hpol ι. Overall, these results provide insight into the general mechanism of DNA polymerase inhibition by MK886.
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Affiliation(s)
- Amit Ketkar
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205-7199, USA
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20
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Zhang X, Zhong L, Liu BZ, Gao YJ, Gao YM, Hu XX. Effect of GINS2 on proliferation and apoptosis in leukemic cell line. Int J Med Sci 2013; 10:1795-804. [PMID: 24273454 PMCID: PMC3837239 DOI: 10.7150/ijms.7025] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 09/15/2013] [Indexed: 12/15/2022] Open
Abstract
Although previous researches have demonstrated that GINS2 express abundantly and abnormally in many malignant solid tumors, such as breast cancer, melanoma and hepatic carcinoma. However, the role and precise molecular mechanism in acute promyelocytic leukemia (APL) are rarely reported. In this current study, we investigated the possible effect and particular mechanism of GINS2 in occurrence and development of APL. We synthesized interference plasmid targeted GINS2 successfully in vitro and also constructed recombinant adenovirus vector carrying GINS2 gene in order to down-regulate or up-regulate GINS2 expression from two aspects of positive and negative in APL. After siRNA were transfected into HL60 cells, both GINS2 expression level of mRNA and protein in interfering group were down-regulated when compared with control groups. Together, MTT and flow cytometry technology showed that cell growth was significantly inhibited. Moreover, the expression lever of Bax was distinctly increased whereas Bcl2 was dramatically decreased in transfected group. Further experiments revealed that down-regulation of GINS2 expression inhibited DNA replication and had a G2/M phase block in HL60 cells. What's more, ATM, CHK2, and P53 gene could involve in the pathogenic signaling pathways of HL60 cells when GINS2 gene was down-regulated. On the contrary, after HL60 cells were infected by recombinant adenovirus vector which contained GINS2 gene, we observed that over-expression of GINS2 could promote HL-60 cell proliferation. What's more, GINS2 might implicate a potential target for leukemia gene therapy.
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Affiliation(s)
- Xi Zhang
- 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing 402160, China
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21
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Multifaceted roles of PGE2 in inflammation and cancer. Semin Immunopathol 2012; 35:123-37. [PMID: 22996682 DOI: 10.1007/s00281-012-0342-8] [Citation(s) in RCA: 420] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 08/31/2012] [Indexed: 12/13/2022]
Abstract
Prostaglandin E(2) (PGE(2)) is a bioactive lipid that elicits a wide range of biological effects associated with inflammation and cancer. PGE(2) exerts diverse effects on cell proliferation, apoptosis, angiogenesis, inflammation, and immune surveillance. This review concentrates primarily on gastrointestinal cancers, where the actions of PGE(2) are most prominent, most likely due to the constant exposure to dietary and environmental insults and the intrinsic role of PGE(2) in tissue homeostasis. A discussion of recent efforts to elucidate the complex and interconnected pathways that link PGE(2) signaling with inflammation and cancer is provided, supported by the abundant literature showing a protective effect of NSAIDs and the therapeutic efficacy of targeting mPGES-1 or EP receptors for cancer prevention. However, suppressing PGE(2) formation as a means of providing chemoprotection against all cancers may not ultimately be tenable, undoubtedly the situation for patients with inflammatory bowel disease. Future studies to fully understand the complex role of PGE(2) in both inflammation and cancer will be required to develop novel strategies for cancer prevention that are both effective and safe.
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22
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Long-term leptin treatment exerts a pro-apoptotic effect on renal tubular cells via prostaglandin E2 augmentation. Eur J Pharmacol 2012; 689:65-71. [DOI: 10.1016/j.ejphar.2012.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 06/01/2012] [Accepted: 06/08/2012] [Indexed: 01/01/2023]
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KOEBERLE ANDREAS, WERZ OLIVER. Microsomal Prostaglandin E2 Synthase-1. ANTI-INFLAMMATORY DRUG DISCOVERY 2012. [DOI: 10.1039/9781849735346-00001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The prostanoids and leukotrienes (LTs) formed from arachidonic acid (AA) via the cyclooxygenase (COX)-1/2 and 5-lipoxygenase (5-LO) pathway, respectively, mediate inflammatory responses, chronic tissue remodelling, cancer, asthma and autoimmune disorders, but also possess homeostatic functions in the gastrointestinal tract, uterus, brain, kidney, vasculature and host defence. Based on the manifold functions of these eicosanoids, the clinical use of non-steroidal anti-inflammatory drugs (NSAIDs), a class of drugs that block formation of all prostanoids, is hampered by severe side-effects including gastrointestinal injury, renal irritations and cardiovascular risks. Therefore, anti-inflammatory agents interfering with eicosanoid biosynthesis require a well-balanced pharmacological profile to minimize these on-target side-effects. Current anti-inflammatory research aims at identifying compounds that can suppress the massive formation of pro-inflammatory prostaglandin (PG)E2 without affecting homeostatic PGE2 and PGI2 synthesis. The inducible microsomal prostaglandin E2 synthase-1 (mPGES-1) is one promising target enzyme. We will give an overview about the structure, regulation and function of mPGES-1 and then present novel inhibitors of mPGES-1 that may possess a promising pharmacological profile.
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Affiliation(s)
- ANDREAS KOEBERLE
- Chair of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy University Jena Philosophenweg 14, D-07743 Jena Germany
| | - OLIVER WERZ
- Chair of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy University Jena Philosophenweg 14, D-07743 Jena Germany
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24
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mPGES-1 in leukemic cells of AML patients. Int J Hematol 2012; 95:115-6. [DOI: 10.1007/s12185-011-0999-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 12/06/2011] [Accepted: 12/07/2011] [Indexed: 01/16/2023]
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