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Cardullo N, Muccilli V, Tringali C. Laccase-mediated synthesis of bioactive natural products and their analogues. RSC Chem Biol 2022; 3:614-647. [PMID: 35755186 PMCID: PMC9175115 DOI: 10.1039/d1cb00259g] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 04/14/2022] [Indexed: 11/21/2022] Open
Abstract
Laccases are a class of multicopper oxidases that catalyse the one-electron oxidation of four equivalents of a reducing substrate, with the concomitant four-electron reduction of dioxygen to water. Typically, they catalyse many anabolic reactions, in which mostly phenolic metabolites were subjected to oxidative coupling. Alternatively, laccases catalyse the degradation or modification of biopolymers like lignin in catabolic processes. In recent years, laccases have proved valuable and green biocatalysts for synthesising compounds with therapeutic value, including antitumor, antibiotic, antimicrobial, and antioxidant agents. Further up to date applications include oxidative depolymerisation of lignin to gain new biomaterials and bioremediation processes of industrial waste. This review summarizes selected examples from the last decade's literature about the laccase-mediated synthesis of biologically active natural products and their analogues; these will include lignans and neolignans, dimeric stilbenoids, biflavonoids, biaryls and other compounds of potential interest for the pharmaceutical industry. In addition, a short section about applications of laccases in natural polymer modification has been included.
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Affiliation(s)
- Nunzio Cardullo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania V.le A. Doria 6 95125-Catania Italy +39-095-580138 +39-095-7385041 +39-095-7385025
| | - Vera Muccilli
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania V.le A. Doria 6 95125-Catania Italy +39-095-580138 +39-095-7385041 +39-095-7385025
| | - Corrado Tringali
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania V.le A. Doria 6 95125-Catania Italy +39-095-580138 +39-095-7385041 +39-095-7385025
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2
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Eldehna WM, Salem R, Elsayed ZM, Al-Warhi T, Knany HR, Ayyad RR, Traiki TB, Abdulla MH, Ahmad R, Abdel-Aziz HA, El-Haggar R. Development of novel benzofuran-isatin conjugates as potential antiproliferative agents with apoptosis inducing mechanism in Colon cancer. J Enzyme Inhib Med Chem 2021; 36:1424-1435. [PMID: 34176414 PMCID: PMC8245078 DOI: 10.1080/14756366.2021.1944127] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/11/2021] [Indexed: 02/07/2023] Open
Abstract
In the current work, a new set of carbohydrazide linked benzofuran-isatin conjugates (5a-e and 7a-i) was designed and synthesised. The anticancer activity for compounds (5b-d, 7a, 7b, 7d and 7g) was measured against NCI-55 human cancer cell lines. Compound 5d was the most efficient, and thus subjected to the five-dose screen where it showed excellent broad activity against almost all tested cancer subpanels. Furthermore, all conjugates (5a-e and 7a-i) showed a good anti-proliferative activity towards colorectal cancer SW-620 and HT-29 cell lines, with an excellent inhibitory effect for compounds 5a and 5d (IC50 = 8.7 and 9.4 µM (5a), and 6.5 and 9.8 µM for (5d), respectively). Both compounds displayed selective cytotoxicity with good safety profile. In addition, both compounds provoked apoptosis in a dose dependent manner in SW-620 cells. Also, they significantly inhibited the anti-apoptotic Bcl2 protein expression and increased the cleaved PARP level that resulted in SW-620 cells apoptosis.
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Affiliation(s)
- Wagdy M. Eldehna
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Rofaida Salem
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Zainab M. Elsayed
- Scientific Research and Innovation Support Unit, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Tarfah Al-Warhi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Hamada R. Knany
- Department of Pharmacognosy, College of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Rezk R. Ayyad
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Thamer Bin Traiki
- Colorectal Research Chair, Department of Surgery, King Khalid University Hospital, King Saud University College of Medicine, Riyadh, Saudi Arabia
| | - Maha-Hamadien Abdulla
- Colorectal Research Chair, Department of Surgery, King Khalid University Hospital, King Saud University College of Medicine, Riyadh, Saudi Arabia
| | - Rehan Ahmad
- Colorectal Research Chair, Department of Surgery, King Khalid University Hospital, King Saud University College of Medicine, Riyadh, Saudi Arabia
| | - Hatem A. Abdel-Aziz
- Department of Applied Organic Chemistry, National Research Center, Dokki, Giza, Egypt
| | - Radwan El-Haggar
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Helwan University, Cairo, Egypt
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Varlet T, Masson G. Enamides and dienamides in phosphoric acid-catalysed enantioselective cycloadditions for the synthesis of chiral amines. Chem Commun (Camb) 2021; 57:4089-4105. [DOI: 10.1039/d1cc00590a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This feature article describes how enamides and dienamides can participate in chiral phosphoric acid catalyzed enantioselective cycloadditions to prepare a wide range of cyclic amines.
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Affiliation(s)
- Thomas Varlet
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
| | - Géraldine Masson
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
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Anantachoke N, Lovacharaporn D, Reutrakul V, Michel S, Gaslonde T, Piyachaturawat P, Suksen K, Prabpai S, Nuntasaen N. Cytotoxic compounds from the leaves and stems of the endemic Thai plant Mitrephora sirikitiae. PHARMACEUTICAL BIOLOGY 2020; 58:490-497. [PMID: 32478640 PMCID: PMC7336994 DOI: 10.1080/13880209.2020.1765813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 04/23/2020] [Accepted: 05/03/2020] [Indexed: 05/17/2023]
Abstract
Context: Mitrephora sirikitiae Weeras., Chalermglin & R.M.K. Saunders (Annonaceae) is a plant endemic to Thailand. Its constituents and their biological activities are unknown.Objective: Isolation and identification of the compounds in the leaves and stems of M. sirikitiae and determination of their cytotoxicity.Materials and methods: Methanol extracts of the leaves and stems of M. sirikitiae were separated by chromatography, and spectroscopic methods were used to determine the structures of the components. The cytotoxicity of the extracts and pure compounds was evaluated using the sulforhodamine B assay with several cell lines. The cells were treated with the compounds at concentrations of 0.16-20 µg/mL for 48 or 72 h.Results: The investigation of the extracts of M. sirikitiae leaves and stems resulted in the isolation of a new lignan, mitrephoran, and 15 known compounds. Among these compounds, 2-(3,4-dimethoxyphenyl)-6-(3,5-dimethoxyphenyl)-3,7-dioxabicyclo[3.3.0]octane, ciliaric acid, 6-methoxymarcanine A, and stepharanine were isolated from this genus for the first time. The alkaloids liriodenine and oxoputerine exhibited strong cytotoxicity against all tested cells (IC50 values of 6.59-11.02 µM). In contrast, magnone A, 3',4-O-dimethylcedrusin, and 6-methoxymarcanine A inhibited the growth of some of the tested cells (IC50 values of 2.03-19.73 µM). Magnone A and 6-methoxymarcanine A showed low toxicity for Hek 293 cells (IC50 >20 µM).Discussion and conclusions: M. sirikitiae is a source of cytotoxic lignans and alkaloids. Among the cytotoxic compounds, magnone A and 6-methoxymarcanine A are potentially useful lead compounds for the further development of anticancer agents because of their selective inhibitory effects on cancer cell lines.
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Affiliation(s)
- Natthinee Anantachoke
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
- CONTACT Natthinee Anantachoke Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok10400, Thailand
| | | | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Sylvie Michel
- Produits Naturels, Analyse et Synthèse, UMR CNRS 8038 CITCOM, Faculté de Pharmacie de Paris, Université Paris Descartes-Université de Paris, Paris, France
| | - Thomas Gaslonde
- Produits Naturels, Analyse et Synthèse, UMR CNRS 8038 CITCOM, Faculté de Pharmacie de Paris, Université Paris Descartes-Université de Paris, Paris, France
| | | | - Kanoknetr Suksen
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Samran Prabpai
- CP FOODLAB Co., Ltd, Science Park, Pathum Thani, Thailand
| | - Narong Nuntasaen
- Department of National Parks, Wildlife and Plant Conservation, Ministry of Natural Resources and Environment, The Forest Herbarium, Bangkok, Thailand
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Molecular Mechanisms Underlying Yatein-Induced Cell-Cycle Arrest and Microtubule Destabilization in Human Lung Adenocarcinoma Cells. Cancers (Basel) 2019; 11:cancers11091384. [PMID: 31533296 PMCID: PMC6769669 DOI: 10.3390/cancers11091384] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 11/28/2022] Open
Abstract
Yatein is an antitumor agent isolated from Calocedrus formosana Florin leaves extract. In our previous study, we found that yatein inhibited the growth of human lung adenocarcinoma A549 and CL1-5 cells by inducing intrinsic and extrinsic apoptotic pathways. To further uncover the effects and mechanisms of yatein-induced inhibition on A549 and CL1-5 cell growth, we evaluated yatein-mediated antitumor activity in vivo and the regulatory effects of yatein on cell-cycle progression and microtubule dynamics. Flow cytometry and western blotting revealed that yatein induces G2/M arrest in A549 and CL1-5 cells. Yatein also destabilized microtubules and interfered with microtubule dynamics in the two cell lines. Furthermore, we evaluated the antitumor activity of yatein in vivo using a xenograft mouse model and found that yatein treatment altered cyclin B/Cdc2 complex expression and significantly inhibited tumor growth. Taken together, our results suggested that yatein effectively inhibited the growth of A549 and CL1-5 cells possibly by disrupting cell-cycle progression and microtubule dynamics.
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Sakharov PA, Rostovskii NV, Khlebnikov AF, Panikorovskii TL, Novikov MS. 2H-Azirines as C–C Annulation Reagents in Cu-Catalyzed Synthesis of Furo[3,2-c]quinolone Derivatives. Org Lett 2019; 21:3615-3619. [DOI: 10.1021/acs.orglett.9b01043] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pavel A. Sakharov
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Nikolai V. Rostovskii
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Alexander F. Khlebnikov
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Taras L. Panikorovskii
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
- Kola Science Centre, Russian Academy of Sciences, 14 Fersman str., Apatity 184200, Russia
| | - Mikhail S. Novikov
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
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Suneja A, Schneider C. Phosphoric Acid Catalyzed [4 + 1]-Cycloannulation Reaction of ortho-Quinone Methides and Diazoketones: Catalytic, Enantioselective Access toward cis-2,3-Dihydrobenzofurans. Org Lett 2018; 20:7576-7580. [PMID: 30407018 DOI: 10.1021/acs.orglett.8b03311] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly straightforward route to enantiomerically highly enriched cis-2,3-dihydrobenzofurans has been achieved via addition of α-diazocarbonyl compounds to in situ generated o-QMs catalyzed by a chiral Brønsted acid. This catalytic strategy provides a direct access to 2,3-dihydrobenzofurans in high yields and with up to 91:9 dr and 99:1 er at ambient temperature. Moreover, a unique phenonium-type rearrangement accounts for product formation with an inverted 2,3-substitution pattern.
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Affiliation(s)
- Arun Suneja
- Institut für Organische Chemie, Universität Leipzig , Johannisallee 29 , 04103 Leipzig , Germany
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig , Johannisallee 29 , 04103 Leipzig , Germany
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Gupta P, Zaidi AH, Manna SK. Suppression of IKK, but not activation of p53 is responsible for cell death mediated by naturally occurring oxidized tetranortriterpenoid. J Cell Biochem 2018; 119:6828-6841. [PMID: 29738082 DOI: 10.1002/jcb.26879] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 03/21/2018] [Indexed: 12/11/2022]
Abstract
Tetranortriterpenoids (limonoids) obtained from the neem tree (Azadirachta indica) have gained significant attention due to their anti-proliferative properties. Here we are investigating the role of a highly oxidized tetranortriterpenoid, azadirachtin on induction of the cell death. Using various apoptotic assays, we show that azadirachtin induces cell death independent of cell types. Although azadirachtin-treated cells show increased expression of p53, but no phosphorylation of p53 (at Ser15 and Ser46) is detected. In silico analysis reveals that azadirachtin interacts with Mdm2 in the p53 binding site, postulating the mutually exclusive interaction of p53 and azadirachtin with Mdm2. Surprisingly, azadirachtin potentiates cell death efficiently in both p53 wild-type and p53 negative cells. In addition, we find azadirachtin suppresses nuclear transcription factor kappaB (NF-κB) by inhibiting the phosphorylation of upstream inhibitory subunit of NF-κB (IκB) kinase (IKK). Further, azadirachtin is unable to potentiate apoptosis in NF-κB-downregulated (IκB-DN) cells, whereas ectopic expression of p65 rescues azadirachtin-mediated apoptosis, regardless of their p53 status. Hence, our data suggest that azadirachtin mediates cell death through inhibition of NF-κB, but not due to the activation of p53. In conclusion, this study proposes azadirachtin as a potential therapeutic agent where insensitivity toward chemotherapy occurs due to the inactivation or mutations in p53.
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Affiliation(s)
- Pankaj Gupta
- Laboratory of Immunology and Centre for DNA Fingerprinting and Diagnostics, Uppal, Hyderabad, Telangana, India.,Graduate Studies, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Adeel H Zaidi
- Laboratory of Immunology and Centre for DNA Fingerprinting and Diagnostics, Uppal, Hyderabad, Telangana, India
| | - Sunil K Manna
- Laboratory of Immunology and Centre for DNA Fingerprinting and Diagnostics, Uppal, Hyderabad, Telangana, India
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9
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Wang C, Fan Y, Yao Y, Chen W, Cui X, Zhu G, Zhou W, Tang L. Base-Promoted Substitution Reaction: A Simple, Economical, and Efficient Method for Obtaining 3-Sulfenylated Benzo[ b
]furan Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201702142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Cong Wang
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
| | - Yuxin Fan
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
| | - Yaoyao Yao
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Wenzhang Chen
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Xing Cui
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Gaofeng Zhu
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Wei Zhou
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Lei Tang
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
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10
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Xia Y, Mo Z, Sun L, Zou L, Zhang W, Zhang J, Wang L. First total synthesis of quiquesetinerviusin A. JOURNAL OF CHEMICAL RESEARCH 2017. [DOI: 10.3184/174751917x14931195075599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The first total synthesis of the dihydrobenzofuran neolignan quiquesetinerviusin A and its related structure have been described. Phenolic coupling is the key step to constructing the dihydrobenzofuran skeleton with vanillin as the raw material. The hydroxyl group was protected with dihydropyran (DHP) and the ester group was reduced with diisobutylaluminium hydride (DIBAL-H) in order to obtain the crucial intermediate diol, which was then condensed with an acid ligand to give the desired compounds following removal of the protecting groups.
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Affiliation(s)
- Yamu Xia
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
| | - Zhen Mo
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
| | - Lin Sun
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
| | - Lijia Zou
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
| | - Wen Zhang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
| | - Jiahong Zhang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
| | - Lihong Wang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
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Giordano C, Rovito D, Barone I, Mancuso R, Bonofiglio D, Giordano F, Catalano S, Gabriele B, Andò S. Benzofuran-2-acetic ester derivatives induce apoptosis in breast cancer cells by upregulating p21 Cip/WAF1 gene expression in p53-independent manner. DNA Repair (Amst) 2017; 51:20-30. [PMID: 28108275 DOI: 10.1016/j.dnarep.2017.01.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 01/04/2017] [Accepted: 01/11/2017] [Indexed: 01/13/2023]
Abstract
Breast cancer is the most common malignancy and the leading cause of cancer-related death in women worldwide. High toxicity of used chemotherapeutics and resistance of cancer cells to treatments are a driving force for searching the new drug candidates for breast cancer therapy. In this study, we tested the antiproliferative effects of a series of benzofuran-2-acetic methyl ester derivatives, synthesized by a palladium-catalyzed carbonylative heterocyclization approach, on breast cancer cells. We observed that benzofuran compounds bearing a phenyl or tert-butyl substituent α to the methoxycarbonyl group significantly inhibited anchorage-dependent and -independent cell growth, and induced G0/G1 cell cycle arrest in human estrogen receptor alpha positive (MCF-7 and T47D) and in triple negative MDA-MB-231 breast cancer cells, without affecting growth of MCF-10A normal breast epithelial cells. Mechanistically, benzofuran derivatives enhanced the cyclin-dependent kinase inhibitor p21Cip/WAF1 expression at both mRNA and protein levels and this occurs transcriptionally in an Sp1-dependent manner. Moreover, benzofuran derivatives induced apoptosis, increased poly (ADP-ribose) polymerase cleavage and Bax/Bcl-2 ratio along with a marked DNA fragmentation along with a marked DNA fragmentation and a strong increase in TUNEL-positive breast cancer cells. Overall, we provide evidence that the newly tested benzofuran derivatives showed antiproliferative and pro-apoptotic activities against breast cancer cells regardless estrogen receptor status, suggesting their possible clinical development as anticancer agents.
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Affiliation(s)
- Cinzia Giordano
- Centro Sanitario,University of Calabria, Arcavacata di Rende, CS, Italy
| | - Daniela Rovito
- Centro Sanitario,University of Calabria, Arcavacata di Rende, CS, Italy
| | - Ines Barone
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, CS, Italy
| | - Raffaella Mancuso
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende, CS, Italy
| | - Daniela Bonofiglio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, CS, Italy
| | - Francesca Giordano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, CS, Italy
| | - Stefania Catalano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, CS, Italy.
| | - Bartolo Gabriele
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende, CS, Italy
| | - Sebastiano Andò
- Centro Sanitario,University of Calabria, Arcavacata di Rende, CS, Italy; Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, CS, Italy.
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12
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Profilin potentiates chemotherapeutic agents mediated cell death via suppression of NF-κB and upregulation of p53. Apoptosis 2016; 21:502-13. [PMID: 26842845 DOI: 10.1007/s10495-016-1222-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The molecular mechanism by which Profilin acts as a tumor suppressor is still unclear. Several chemotherapeutic agents, used till date either have unfavorable side effects or acquired resistance in tumor cells. Our findings show that Profilin enhances cell death mediated by several chemotherapeutic-agents. The activation of NF-κB and its dependent genes, mediated by paclitaxel and vinblastine, was completely inhibited in Profilin overexpressing cells. This inhibition was due to the Profilin mediated attenuation of IκBα degradation, thereby preventing p65 nuclear translocation and low NF-κB DNA binding activity.Moreover, Profilin increases level of p53 in the presence of known inducers, such as doxorubicin, vinblastine, and benzofuran. This increased p53 level leads to enhanced cell death as indicated by activation of caspases 3, 8, 9, which results in cleavage of PARP.Furthermore, knocking down of p53 in Profilin overexpressing cells leads to decreased cell death. Ectopic expression of Profilin in HCT116 p53 knock out cells showed lesser cell death as compared to the HCT116 p53 wild type cells. For the first time, we provide evidences, which suggest that Profilin synergizes with chemotherapeutic drugs to induce tumor cell death by regulating NF-κB and p53. Thus, modulation of Profilin may be a useful strategy for effective combination therapy.
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Gelis C, Bekkaye M, Lebée C, Blanchard F, Masson G. Chiral Phosphoric Acid Catalyzed [3 + 2] Cycloaddition and Tandem Oxidative [3 + 2] Cycloaddition: Asymmetric Synthesis of Substituted 3-Aminodihydrobenzofurans. Org Lett 2016; 18:3422-5. [DOI: 10.1021/acs.orglett.6b01593] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Coralie Gelis
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Université Paris-Sud, 1, av. de
la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Mathieu Bekkaye
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Université Paris-Sud, 1, av. de
la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Clément Lebée
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Université Paris-Sud, 1, av. de
la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Florent Blanchard
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Université Paris-Sud, 1, av. de
la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Géraldine Masson
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Université Paris-Sud, 1, av. de
la Terrasse, Gif-sur-Yvette 91198 Cedex, France
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14
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Hemelaere R, Carreaux F, Carboni B. A Diastereoselective Route totrans-2-Aryl-2,3-dihydrobenzofurans through Sequential Cross-Metathesis/Isomerization/Allylboration Reactions: Synthesis of Bioactive Neolignans. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lu L, Katsaros D, Risch HA, Canuto EM, Biglia N, Yu H. MicroRNA let-7a modifies the effect of self-renewal gene HIWI on patient survival of epithelial ovarian cancer. Mol Carcinog 2015; 55:357-65. [PMID: 25630839 DOI: 10.1002/mc.22285] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 12/09/2014] [Accepted: 12/18/2014] [Indexed: 02/06/2023]
Abstract
Aberrant expressions of self-renewal gene HIWI and microRNA (miRNA) let-7a are observed in epithelial ovarian cancer (EOC). A U-shape association between HIWI expression and overall survival is seen in several human cancers but unknown in EOC. HIWI directly and/or indirectly interacts with let-7a, but the clinical relevance of this interaction is yet to be addressed. Here, we analyzed HIWI and let-7a expressions in 211 primary EOC tissues using quantitative reverse-transcription PCR to investigate HIWI and its interaction with let-7a in the prognostic significance of EOC. Associations of HIWI and its interaction with miRNA let-7a with patient survival were analyzed using the Kaplan-Meier survival curves and Cox proportional hazard regression models. Kaplan-Meier survival curves showed that patients with medium HIWI had poorer overall survival than those with low or high HIWI. An 89% increased death risk (HR = 1.89, 95% CI: 1.29-2.98) was observed in the medium HIWI group in multivariate Cox proportional hazard regression analyses. Among patients with high let-7a expression, those with medium HIWI had an increased risk of death compared to those with low HIWI (HR = 2.62, 95% CI: 1.30-5.30), whereas among those with low let-7a, no significant association between HIWI expression and overall survival was observed (HR = 1.63, 95% CI: 0.86-3.08). Moreover, HIWI expression also affected chemotherapy response. The results suggested that miRNA let-7a could modify the effect of HIWI expression on patient survival of EOC, expanding our understanding of the clinical relevance of HIWI and let-7a interaction in EOC prognosis. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Lingeng Lu
- Department of Chronic Disease Epidemiology, Yale School of Public Health, School of Medicine, Yale Cancer Center, Yale University, New Haven, Connecticut
| | - Dionyssios Katsaros
- Department of Surgical Science, A O Città della Salute e della Scienza di Torino, S. Anna Hospital, Turin, Italy
| | - Harvey A Risch
- Department of Chronic Disease Epidemiology, Yale School of Public Health, School of Medicine, Yale Cancer Center, Yale University, New Haven, Connecticut
| | - Emilie Marion Canuto
- Department of Surgical Science, A O Città della Salute e della Scienza di Torino, S. Anna Hospital, Turin, Italy
| | - Nicoletta Biglia
- Department of Surgical Science, Division of Obstetrics and Gynecology, University of Torino School of Medicine, Mauriziano Hospital, Turin, Italy
| | - Herbert Yu
- Department of Chronic Disease Epidemiology, Yale School of Public Health, School of Medicine, Yale Cancer Center, Yale University, New Haven, Connecticut.,Cancer Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii
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Pal S, Bhattacharjee A, Ali A, Mandal NC, Mandal SC, Pal M. Chronic inflammation and cancer: potential chemoprevention through nuclear factor kappa B and p53 mutual antagonism. JOURNAL OF INFLAMMATION-LONDON 2014; 11:23. [PMID: 25152696 PMCID: PMC4142057 DOI: 10.1186/1476-9255-11-23] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 06/28/2014] [Indexed: 12/13/2022]
Abstract
Activation of nuclear factor-kappa B (NF- κB) as a mechanism of host defense against infection and stress is the central mediator of inflammatory responses. A normal (acute) inflammatory response is activated on urgent basis and is auto-regulated. Chronic inflammation that results due to failure in the regulatory mechanism, however, is largely considered as a critical determinant in the initiation and progression of various forms of cancer. Mechanistically, NF- κB favors this process by inducing various genes responsible for cell survival, proliferation, migration, invasion while at the same time antagonizing growth regulators including tumor suppressor p53. It has been shown by various independent investigations that a down regulation of NF- κB activity directly, or indirectly through the activation of the p53 pathway reduces tumor growth substantially. Therefore, there is a huge effort driven by many laboratories to understand the NF- κB signaling pathways to intervene the function of this crucial player in inflammation and tumorigenesis in order to find an effective inhibitor directly, or through the p53 tumor suppressor. We discuss here on the role of NF- κB in chronic inflammation and cancer, highlighting mutual antagonism between NF- κB and p53 pathways in the process. We also discuss prospective pharmacological modulators of these two pathways, including those that were already tested to affect this mutual antagonism.
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Affiliation(s)
- Srabani Pal
- Pharmacognosy and Phytotherapy laboratory, Division of Pharmacognosy, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Ashish Bhattacharjee
- Department of Biotechnology, National Institute of Technology, Durgapur-713209, India
| | - Asif Ali
- Division of Molecular Medicine, Bose Institute, Kolkata 700054, India
| | | | - Subhash C Mandal
- Pharmacognosy and Phytotherapy laboratory, Division of Pharmacognosy, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Mahadeb Pal
- Division of Molecular Medicine, Bose Institute, Kolkata 700054, India
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Kumar S. P53 induction accompanying G2/M arrest upon knockdown of tumor suppressor HIC1 in U87MG glioma cells. Mol Cell Biochem 2014; 395:281-90. [PMID: 24992983 DOI: 10.1007/s11010-014-2137-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 06/17/2014] [Indexed: 10/25/2022]
Abstract
Hypermethylated in cancer 1 (HIC1) is a novel tumor suppressor gene (tsg) frequently silenced by epigenetic modification, predominantly by methylation in different tumors. HIC1 functionally co-operates with p53 in cultured cells as well as in transgenic animals to suppress tumors and has binding site on its promoter. Its over expression often leads to cell cycle arrests. Although HIC1 proven to have role as tsg, its regulation to cell cycle and dependency upon p53 is grossly unknown. In this study, we investigated the role of HIC1 in cell cycle and proliferation of glioma cell line U87MG which has wild type p53, in both serum-containing and serum-deprived medium. Microscopic analysis and MTT assay showed reduced cell number and rate of proliferation upon HIC1 knock down compared to control siRNA (p = 0.025) and untreated cells (p = 0.03) in serum-containing medium and serum-free medium (p = 0.014 vs control siRNA; p = 0.018 vs untreated cells). Cell cycle analysis revealed an arrest at G2/M phase of cell cycle with no demonstrable increase in apoptosis with both medium. An increased expression of p53 concomitant with HIC1 knockdown was observed. Furthermore P21, a p53 responsive gene, along with p27 was significantly increased in comparison with controls. Our results demonstrated an important role of HIC1 for the normal progression of cell cycle, and at molecular level, it could affect the homeostasis of p53 as well as number of cell cycle-related genes, which may or may not be directly linked to p53.
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Affiliation(s)
- Sanjay Kumar
- Biomolecular Science Centre, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Bld 20, 4110 Libra Drive, Orlando, FL, 32816, USA,
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Pieme CA, Guru SK, Ambassa P, Kumar S, Ngameni B, Ngogang JY, Bhushan S, Saxena AK. Induction of mitochondrial dependent apoptosis and cell cycle arrest in human promyelocytic leukemia HL-60 cells by an extract from Dorstenia psilurus: a spice from Cameroon. Altern Ther Health Med 2013; 13:223. [PMID: 24016040 PMCID: PMC3847675 DOI: 10.1186/1472-6882-13-223] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Accepted: 08/30/2013] [Indexed: 12/20/2022]
Abstract
Background The use of edible plants is an integral part of dietary behavior in the West region of Cameroon. Dorstenia psilurus (Moraceae) is widely used as spice and as medicinal plant for the treatment of several diseases in Cameroon. The aim of this study is to investigate the cytotoxic and apoptotic potential of methanol extract of D. psilurus in human promyelocytic leukemia (HL-60) cells and prostate cancer (PC-3) cells. Methods Cytotoxicity of D. psilurus extract was tested in HL-60 and PC-3 cells using 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction assay and flow cytometric methods Results The methanol extract of D. psilurus have significant in vitro cytotoxic activity in HL-60 cells and PC-3 cells with IC50 value of 12 ±1.54 μg/ml and 18 ± 0.45 μg/ml respectively after 48 h. The mechanism of antiproliferative activity showed that after 24 h, D. psilurus extract induces apoptosis on HL-60 cells by the generation of reactive oxygen species (ROS) along with concurrent loss of mitochondrial membrane potential, modification in the DNA distribution and enhance of G2/M phase cell cycle. Conclusion The extract induces apoptosis of HL-60 cells associated with ROS production, loss of mitochondrial membrane potential and apoptotic DNA fragmentation.
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Pan Y, Huang J, Xing R, Yin X, Cui J, Li W, Yu J, Lu Y. Metallothionein 2A inhibits NF-κB pathway activation and predicts clinical outcome segregated with TNM stage in gastric cancer patients following radical resection. J Transl Med 2013; 11:173. [PMID: 23870553 PMCID: PMC3726370 DOI: 10.1186/1479-5876-11-173] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Accepted: 07/10/2013] [Indexed: 12/26/2022] Open
Abstract
Background Metallothionein 2A (MT2A) as a stress protein, plays a protective role in gastric mucosal barrier. Its role in the development of gastric cancer (GC) is unclear. The mechanism of MT2A will be investigated in gastric tumorigenesis. Methods MT2A expression was detected in 973 gastric specimens. The biological function was determined through ectopic expressing MT2A in vitro and in vivo. The possible downstream effectors of MT2A were investigated in NF-κB signaling. The protein levels of MT2A, IκB-α and p-IκB-α (ser32/36) expression were analyzed in a subset of 258 patients by IHC staining. The prognostic effects of MT2A, status of IκB-α and TNM stage were evaluated using the Kaplan-Meier method and compared using the log-rank test. Results Decreased MT2A expression was detected in cell lines and primary tumors of GC. In clinical data, loss of MT2A (MT2A + in Normal (n =171, 76.0%); Intestinal metaplasia (n = 118, 50.8%); GC (n = 684. 22.4%, P < 0.001)) was associated with poor prognosis (P < 0.001), advanced TNM stage (P = 0.05), and down-regulation of IκB-α expression (P < 0.001). Furthermore, MT2A was the independent prognostic signature segregated from the status of IκB-α and pathological features. In addition, MT2A inhibited cell growth through apoptosis and G2/M arrest, which negatively regulated NF-κB pathway through up-regulation of IκB-α and down-regulation of p-IκB-α and cyclin D1 expression. Conclusions MT2A might play a tumor suppressive activity through inhibiting NF-κB signaling and may be a prognostic biomarker and potential target for individual therapy of GC patients.
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Affiliation(s)
- Yuanming Pan
- Laboratory of Molecular Oncology, Key laboratory of Carcinogenesis and Translational Research, Ministry of Education, Peking University Cancer Hospital & Institute, No,52 Fucheng Road, Beijing, Haidian District 100142, PR China
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20
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Biscaro F, Parisotto EB, Zanette VC, Günther TMF, Ferreira EA, Gris EF, Correia JFG, Pich CT, Mattivi F, Filho DW, Pedrosa RC. Anticancer activity of flavonol and flavan-3-ol rich extracts from Croton celtidifolius latex. PHARMACEUTICAL BIOLOGY 2013; 51:737-743. [PMID: 23570524 DOI: 10.3109/13880209.2013.764331] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
CONTEXT Croton celtidifolius Baill (Euphorbiaceae) is a tree found in the Atlantic Forest in Southern Brazil, where it is commonly known as "Sangue-de-Dragão". Its red latex is used traditionally for treating ulcers, diabetes and cancer. OBJECTIVE To evaluate antitumor activities of Croton celtififolius latex in vitro and in vivo. MATERIAL AND METHODS Phytochemical analyses were conducted using HPLC-DAD-MS. Cytotoxic, nuclease and pro-apoptotic properties were determined using the tetrazolium salt assay (MTT), plasmid DNA damage assay and ethidium bromide (EB)/acridine orange methods, respectively, and antitumor activity was determined in the Ehrlich ascites carcinoma (EAC) mouse model. RESULTS Phytochemical studies indicated a high phenol content of flavonols (45.67 ± 0.24 and 18.01 ± 0.23 mg/mL of myricetin and quercetin, respectively) and flavan-3-ols (114.12 ± 1.84 and 1527.41 ± 16.42 mg/L of epicatechin and epigallocatechin, respectively) in latex. These compounds reduced MCF-7 and EAC cell viability in the MTT assay (IC50 = 169.0 ± 1.8 and 187.0 ± 2.2 μg/mL, respectively). Latex compounds caused significant DNA fragmentation and increased the number of apoptotic cells (negative control (NC), 12%; latex, 41%) as indicated by differential staining in the EB/acridine orange assay. The in vivo latex treatment at 3.12 mg/kg/day reduced the body weight by 7.57 ± 2.04 g and increased median survival time to 17.5 days when compared to the NC group (13.0 days). In addition, the highest latex concentration inhibited tumor growth by 56%. DISCUSSION AND CONCLUSION These results agree with ethno-pharmacological reports showing cytotoxicity and antitumor activity of C. celtidifolius latex. The mechanism of antitumor action may be related to direct DNA fragmentation that reduces survival and induces apoptosis.
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Affiliation(s)
- Fernanda Biscaro
- Department of Biochemistry, Universidade Federal de Santa Catarina, Florianopolis, Brazil
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Gopinath P, Ramalingam K, Muraleedharan KM, Karunagaran D. Benzisothiazolones arrest the cell cycle at the G2/M phase and induce apoptosis in HeLa cells. MEDCHEMCOMM 2013. [DOI: 10.1039/c3md00034f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mahali SK, Manna SK. Beta-D-glucoside protects against advanced glycation end products (AGEs)-mediated diabetic responses by suppressing ERK and inducing PPAR gamma DNA binding. Biochem Pharmacol 2012; 84:1681-90. [PMID: 23058985 DOI: 10.1016/j.bcp.2012.09.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 09/25/2012] [Accepted: 09/26/2012] [Indexed: 01/28/2023]
Abstract
Accumulation of advanced glycation end products (AGEs), due to excessive amounts of 3- or 4-carbon sugars derived from glucose; cause multiple consequences in diabetic patients and older persons. The transcription factor, peroxisome proliferator-activated receptor gamma (PPARγ), is down regulated in the diabetic condition. Drugs targeting PPARγ were developed for diabetes therapy. We found that AGE inhibited PPARγ activity in different cell types induced by PPARγ activators, like troglitazone, rosiglitazone, oleamide, and anandamide. AGE induced translocation of PPARγ from nucleus to cytoplasm, increased on activation of ERK in cells. Antioxidants that inhibit AGE-induced NF-κB activation by preventing ROI generation were unable to protect AGE-mediated decrease in PPARγ activity. Only mangiferin, a β-D-glucoside, prevented AGE-mediated decrease in PPARγ activity and inhibited phosphorylation of ERK and cytoplasmic translocation of PPARγ. Mangiferin interacts with PPARγ and enhanced its DNA binding activity as predicted by in silico and shown by in vitro DNA-binding activity. Overall, the data suggest that (i) mangiferin inhibited AGE-induced ERK activation thereby inhibited PPARγ phosphorylation and cytoplasmic translocation; (ii) mangiferin interacts with PPARγ and enhances its DNA-binding ability. With these dual effects, mangiferin can be a likely candidate for developing therapeutic drug against diabetes.
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Affiliation(s)
- Sidhartha K Mahali
- Laboratory of Immunology, Centre for DNA Fingerprinting & Diagnostics, Nampally, Hyderabad 500001, India
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24
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Amal H, Ding L, Liu BB, Tisch U, Xu ZQ, Shi DY, Zhao Y, Chen J, Sun RX, Liu H, Ye SL, Tang ZY, Haick H. The scent fingerprint of hepatocarcinoma: in-vitro metastasis prediction with volatile organic compounds (VOCs). Int J Nanomedicine 2012; 7:4135-46. [PMID: 22888249 PMCID: PMC3415321 DOI: 10.2147/ijn.s32680] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is a common and aggressive form of cancer. Due to a high rate of postoperative recurrence, the prognosis for HCC is poor. Subclinical metastasis is the major cause of tumor recurrence and patient mortality. Currently, there is no reliable prognostic method of invasion. AIM To investigate the feasibility of fingerprints of volatile organic compounds (VOCs) for the in-vitro prediction of metastasis. METHODS Headspace gases were collected from 36 cell cultures (HCC with high and low metastatic potential and normal cells) and analyzed using nanomaterial-based sensors. Predictive models were built by employing discriminant factor analysis pattern recognition, and the classification success was determined using leave-one-out cross-validation. The chemical composition of each headspace sample was studied using gas chromatography coupled with mass spectrometry (GC-MS). RESULTS Excellent discrimination was achieved using the nanomaterial-based sensors between (i) all HCC and normal controls; (ii) low metastatic HCC and normal controls; (iii) high metastatic HCC and normal controls; and (iv) high and low HCC. Several HCC-related VOCs that could be associated with biochemical cellular processes were identified through GC-MS analysis. CONCLUSION The presented results constitute a proof-of-concept for the in-vitro prediction of the metastatic potential of HCC from VOC fingerprints using nanotechnology. Further studies on a larger number of more diverse cell cultures are needed to evaluate the robustness of the VOC patterns. These findings could benefit the development of a fast and potentially inexpensive laboratory test for subclinical HCC metastasis.
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MESH Headings
- Animals
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/metabolism
- Carcinoma, Hepatocellular/chemistry
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Case-Control Studies
- Cell Line, Tumor
- Discriminant Analysis
- Gas Chromatography-Mass Spectrometry/methods
- Hep G2 Cells
- Humans
- Liver Neoplasms/chemistry
- Liver Neoplasms/metabolism
- Liver Neoplasms/pathology
- Lung Neoplasms/secondary
- Mice
- Mice, Nude
- Models, Theoretical
- Nanotechnology/instrumentation
- Neoplasm Metastasis
- Pattern Recognition, Automated
- Reproducibility of Results
- Statistics, Nonparametric
- Volatile Organic Compounds/analysis
- Volatile Organic Compounds/metabolism
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Affiliation(s)
- Haitham Amal
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion – Israel Institute of Technology, Haifa, Israel
| | - Lu Ding
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Bin-bin Liu
- Liver Cancer Institute and Zhong-shan Hospital, Fudan University, Shanghai, China
| | - Ulrike Tisch
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion – Israel Institute of Technology, Haifa, Israel
| | - Zhen-qin Xu
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Da-you Shi
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yan Zhao
- Liver Cancer Institute and Zhong-shan Hospital, Fudan University, Shanghai, China
| | - Jie Chen
- Liver Cancer Institute and Zhong-shan Hospital, Fudan University, Shanghai, China
| | - Rui-xia Sun
- Liver Cancer Institute and Zhong-shan Hospital, Fudan University, Shanghai, China
| | - Hu Liu
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Sheng-Long Ye
- Liver Cancer Institute and Zhong-shan Hospital, Fudan University, Shanghai, China
| | - Zhao-you Tang
- Liver Cancer Institute and Zhong-shan Hospital, Fudan University, Shanghai, China
| | - Hossam Haick
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion – Israel Institute of Technology, Haifa, Israel
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ERK inhibition enhances TSA-induced gastric cancer cell apoptosis via NF-κB-dependent and Notch-independent mechanism. Life Sci 2012; 91:186-93. [PMID: 22781708 DOI: 10.1016/j.lfs.2012.06.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 06/26/2012] [Accepted: 06/28/2012] [Indexed: 12/17/2022]
Abstract
AIMS To analyze the combined impact of the histone deacetylase inhibitor (HDACI) Trichostatin A (TSA) and the extracellular-signal-regulated kinase 1/2 (ERK1/2) inhibitor PD98059 on gastric cancer (GC) cell line SGC7901 growth. MAIN METHODS SGC7901 cells were treated with TSA, PD98059 or with a TSA-PD98059 combination. Effects of drug treatment on tumor cell proliferation, apoptosis, cell cycle progression, and cell signaling pathways were investigated by MTS assay, flow cytometry, Western blotting, chromatin immunoprecipitation (ChIP) assay, electrophoretic mobility shift assay (EMSA), and luciferase reporter assay, respectively. KEY FINDINGS PD98059 enhanced TSA-induced cell growth arrest, apoptosis and activation of p21(WAF1/CIP1), but reversed TSA-induced activation of ERK1/2 and nuclear factor-κB (NF-κB). TSA alone up-regulated Notch1 and Hes1, and down-regulated Notch2, but PD98059 did not affect the trends of Notch1 and Notch2 induced by TSA. Particularly, PD98059 did potentiate the ability of TSA to down-regulate phospho-histone H3 protein, but increased levels of the acetylated forms of histone H3 bound to the p21(WAF1/CIP1) promoter, leading to enhanced expression of p21(WAF1/CIP1) in SGC7901 cells. SIGNIFICANCE PD98059 synergistically potentiates TSA-induced GC growth arrest and apoptosis by manipulating NF-κB and p21(WAF1/CIP1) independent of Notch. Therefore, concomitant administration of HDACIs and ERK1/2 inhibitors may be a promising treatment strategy for individuals with GC.
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Zhang CZ, Zhang H, Yun J, Chen GG, Lai PBS. Dihydroartemisinin exhibits antitumor activity toward hepatocellular carcinoma in vitro and in vivo. Biochem Pharmacol 2012; 83:1278-89. [PMID: 22342732 DOI: 10.1016/j.bcp.2012.02.002] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 01/31/2012] [Accepted: 02/01/2012] [Indexed: 01/29/2023]
Abstract
Dihydroartemisinin (DHA), a semi-synthetic derivative of artemisinin isolated from the traditional Chinese herb Artemisia annua L., has been shown to exhibit inhibitory effects on human cancer cells. However, its antitumor ability toward hepatocellular carcinoma (HCC) has not been studied. In this study, we demonstrated that DHA significantly inhibited HCC cell growth in vitro and in vivo via inducing G2/M cell cycle arrest and apoptosis. The induction of p21 and the inhibition of cyclin B and CDC25C contributed to DHA-induced G2/M arrest. DHA-induced apoptosis was associated with mitochondrial membrane depolarization, release of cytochrome c, activation of caspases, and DNA fragmentation. Activation of caspase 9 and caspase 3, but not caspase 8, was detected in DHA-treated cells. Attenuation of apoptosis in cells pretreated with Z-VAD-FMK suggested the involvement of caspase cascade. Furthermore, p53 facilitated apoptosis caused by DHA. Bcl-2 family proteins were also responsible for DHA-induced apoptosis. DHA exposure decreased Mcl-1 expression but increased the levels of Noxa and active Bak. Bak was released from the Mcl-1/Bak complex due to the decline of Mcl-1. Further study revealed that Mcl-1 was rapidly degraded in DHA-treated cells and that DHA-induced apoptosis was largely inhibited by overexpression of Mcl-1 or RNAi-mediated decrease of Bak and Noxa. In a HCC-xenograft mouse model, the intraperitoneal injection of DHA resulted in significant inhibition of HCC xenograft tumors. Taken together, our data, for the first time, demonstrate the potential antitumor activity of DHA in HCC.
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Affiliation(s)
- Chris Zhiyi Zhang
- State Key Laboratory of Oncology in Southern China, Sun Yat-Sen University Cancer Center, Guangzhou, China; Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou, China; Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
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Mahali S, Raviprakash N, Raghavendra PB, Manna SK. Advanced glycation end products (AGEs) induce apoptosis via a novel pathway: involvement of Ca2+ mediated by interleukin-8 protein. J Biol Chem 2011; 286:34903-13. [PMID: 21862577 DOI: 10.1074/jbc.m111.279190] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Advanced glycation end products (AGEs) accumulate in diabetic patients due to high blood glucose levels and cause multiple deleterious effects. In this study, we provide evidence that the AGE increased cell death, one such deleterious effect. Methyl glyoxal-coupled human serum albumin (AGE-HSA) induced transcription factors such as NF-κB, NF-AT, and AP-1. AGE acts through its cell surface receptor, RAGE, and degranulates vesicular contents including interleukin-8 (IL-8). The number of RAGEs, as well as the amount of NF-κB activation, is low, but the cell death is higher in neuronal cells upon AGE treatment. Degranulated IL-8 acts through its receptors, IL-8Rs, and induces sequential events in cells: increase in intracellular Ca(2+), activation of calcineurin, dephosphorylation of cytoplasmic NF-AT, nuclear translocation of NF-AT, and expression of FasL. Expressed FasL increases activity of caspases and induces cell death. Although AGE increases the amount of reactive oxygen intermediate, accompanying cell death is not dependent upon reactive oxygen intermediate. AGE induces autophagy, which partially protects cells from cell death. A novel mechanism of AGE-mediated cell death in different cell types, especially in neuronal cells where it is an early event, is provided here. Thus, this study may be important in several age-related neuronal diseases where AGE-induced apoptosis is observed because of high amounts of AGE.
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Affiliation(s)
- Sidharth Mahali
- Laboratory of Immunology, Centre for DNA Fingerprinting and Diagnostics, Nampally, Hyderabad 500 001, India
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Saliu F, Tolppa EL, Zoia L, Orlandi M. Horseradish peroxidase catalyzed oxidative cross-coupling reactions: the synthesis of ‘unnatural’ dihydrobenzofuran lignans. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.05.072] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
This article gives an overview of synthetic approaches to the 2,3-dihydrobenzofuran ring system with an emphasis on recently developed methods. The synthetic approaches are classified according to the key bond(s) formed during the construction of the dihydrobenzofuran skeleton, and approaches of relevance to the synthesis of natural products are highlighted.
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Affiliation(s)
- Tom D. Sheppard
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon St, London WC1H 0AJ, UK
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Thoh M, Babajan B, Raghavendra PB, Sureshkumar C, Manna SK. Azadirachtin interacts with retinoic acid receptors and inhibits retinoic acid-mediated biological responses. J Biol Chem 2011; 286:4690-702. [PMID: 21127062 PMCID: PMC3039373 DOI: 10.1074/jbc.m110.169334] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 11/09/2010] [Indexed: 11/06/2022] Open
Abstract
Considering the role of retinoids in regulation of more than 500 genes involved in cell cycle and growth arrest, a detailed understanding of the mechanism and its regulation is useful for therapy. The extract of the medicinal plant Neem (Azadirachta indica) is used against several ailments especially for anti-inflammatory, anti-itching, spermicidal, anticancer, and insecticidal activities. In this report we prove the detailed mechanism on the regulation of retinoic acid-mediated cell signaling by azadirachtin, active components of neem extract. Azadirachtin repressed all trans-retinoic acid (ATRA)-mediated nuclear transcription factor κB (NF-κB) activation, not the DNA binding but the NF-κB-dependent gene expression. It did not inhibit IκBα degradation, IκBα kinase activity, or p65 phosphorylation and its nuclear translocation but inhibited NF-κB-dependent reporter gene expression. Azadirachtin inhibited TRAF6-mediated, but not TRAF2-mediated NF-κB activation. It inhibited ATRA-induced Sp1 and CREB (cAMP-response element-binding protein) DNA binding. Azadirachtin inhibited ATRA binding with retinoid receptors, which is supported by biochemical and in silico evidences. Azadirachtin showed strong interaction with retinoid receptors. It suppressed ATRA-mediated removal of retinoid receptors, bound with DNA by inhibiting ATRA binding to its receptors. Overall, our data suggest that azadirachtin interacts with retinoic acid receptors and suppresses ATRA binding, inhibits falling off the receptors, and activates transcription factors like CREB, Sp1, NF-κB, etc. Thus, azadirachtin exerts anti-inflammatory and anti-metastatic responses by a novel pathway that would be beneficial for further anti-inflammatory and anti-cancer therapies.
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Affiliation(s)
- Maikho Thoh
- From the Laboratory of Immunology, Centre for DNA Fingerprinting and Diagnostics, Nampally, Hyderabad 500001, India and
| | - Banaganapalli Babajan
- the Department of Biochemistry, Sri Krishnadevaraya University, Anantapur 515003, India
| | | | - Chitta Sureshkumar
- From the Laboratory of Immunology, Centre for DNA Fingerprinting and Diagnostics, Nampally, Hyderabad 500001, India and
| | - Sunil K. Manna
- From the Laboratory of Immunology, Centre for DNA Fingerprinting and Diagnostics, Nampally, Hyderabad 500001, India and
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Manna SK, Gangadharan C, Edupalli D, Raviprakash N, Navneetha T, Mahali S, Thoh M. Ras puts the brake on doxorubicin-mediated cell death in p53-expressing cells. J Biol Chem 2010; 286:7339-47. [PMID: 21156795 DOI: 10.1074/jbc.m110.191916] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Doxorubicin is one of the most effective molecules used in the treatment of various tumors. Contradictory reports often open windows to understand the role of p53 tumor suppressor in doxorubicin-mediated cell death. In this report, we provide evidences that doxorubicin induced more cell death in p53-negative tumor cells. Several cells, having p53 basal expression, showed increase in p53 DNA binding upon doxorubicin treatment. Doxorubicin induced cell death in p53-positive cells through expression of p53-dependent genes and activation of caspases and caspase-mediated cleavage of cellular proteins. Surprisingly, in p53-negative cells, doxorubicin-mediated cell death was more aggressive (faster and intense). Doxorubicin increased the amount of Fas ligand (FasL) by enhancing activator protein (AP) 1 DNA binding in both p53-positive and p53-negative cells, but the basal expression of Fas was higher in p53-negative cells. Anti-FasL antibody considerably protected doxorubicin-mediated cell death in both types of cells. Activation of caspases was faster in p53-negative cells upon doxorubicin treatment. In contrast, the basal expression of Ras oncoprotein was higher in p53-positive cells, which might increase the basal expression of Fas in these cells. Overexpression of Ras decreased the amount of Fas in p53-negative cells, thereby decreasing doxorubicin-mediated aggressive cell death. Overall, this study will help to understand the much studied chemotherapeutic drug, doxorubicin-mediated cell signaling cascade, that leads to cell death in p53-positive and -negative cells. High basal expression of Fas might be an important determinant in doxorubicin-mediated cell death in p53-negative cells.
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Affiliation(s)
- Sunil K Manna
- Laboratory of Immunology, Centre for DNA Fingerprinting and Diagnostics, Nampally, Hyderabad 500 001, India.
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Novel Danshen methoxybenzo[b]furan derivative antagonizing adipogenic differentiation and production of inflammatory adipokines. Chem Biol Interact 2010; 188:457-66. [DOI: 10.1016/j.cbi.2010.09.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 09/06/2010] [Accepted: 09/14/2010] [Indexed: 12/25/2022]
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Schneider G, Krämer OH. NFκB/p53 crosstalk-a promising new therapeutic target. Biochim Biophys Acta Rev Cancer 2010; 1815:90-103. [PMID: 20951769 DOI: 10.1016/j.bbcan.2010.10.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 10/02/2010] [Accepted: 10/07/2010] [Indexed: 12/12/2022]
Abstract
The transcription factors p53 and NFκB determine cellular fate and are involved in the pathogenesis of most-if not all-cancers. The crosstalk between these transcription factors becomes increasingly appreciated as an important mechanism operative during all stages of tumorigenesis, metastasis, and immunological surveillance. In this review, we summarize molecular mechanisms regulating cross-signaling between p53 and NFκB proteins and how dysregulated interactions between p53 and NFκB family members contribute to oncogenesis. We furthermore analyze how such signaling modules represent targets for the design of novel intervention strategies using established compounds and powerful combination therapies.
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Affiliation(s)
- Günter Schneider
- Technische Universität München, Klinikum rechts der Isar, II. Medizinische Klinik, Ismaninger Str. 22, D-81675 München, Germany
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