1
|
D’yakonov VA, Makarov AA, Dzhemileva LU, Ramazanov IR, Makarova EK, Dzhemilev UM. Natural Trienoic Acids as Anticancer Agents: First Stereoselective Synthesis, Cell Cycle Analysis, Induction of Apoptosis, Cell Signaling and Mitochondrial Targeting Studies. Cancers (Basel) 2021; 13:cancers13081808. [PMID: 33920067 PMCID: PMC8070279 DOI: 10.3390/cancers13081808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/30/2021] [Accepted: 04/06/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Currently, the whole world is acutely concerned with the selection of effective treatment regimens for oncological diseases. This problem is becoming more and more catastrophic every year due to the phenomenon of multidrug resistance, the consequence of which is the loss of the effectiveness of drugs against tumor cells. One of the solutions to the problem described above is the synthesis of new low molecular weight compounds that can effectively affect molecular cellular targets, for example, enzymes of the cell cycle, and, as a consequence, interrupt DNA synthesis, contributing to tumor death. Within the framework of this article, we carried out the Z-stereoselective synthesis of natural unsaturated acids containing a 1Z,5Z,9Z-triene moiety, for which it was shown that they are effective inhibitors of human topoisomerase I, and also affect mitochondria. At the same time, using multiplex analysis, the activation of signaling pathways was studied and a probable mechanism of the antitumor action of the synthesized trienoic acids was proposed. Abstract The first Z-stereoselective method was developed for the synthesis of unsaturated acids containing a 1Z,5Z,9Z-triene moiety in 61–64% yields using the new Ti-catalyzed cross-coupling of oxygen-containing and aliphatic 1,2-dienes as the key synthetic step. It was shown for the first time that trienoic acids with non-methylene-interrupted Z-double bonds show moderate cytotoxic activities against tumor cell lines (Jurkat, K562, U937, HL60, HeLa), human embryonic kidney cells (Hek293), normal fibroblasts and human topoisomerase I (hTop1) inhibitory activity in vitro. The synthesized acids efficiently initiate apoptosis of Jurkat tumor cells, with the cell death mechanism being activated by the mitochondrial pathway. A probable mechanism of topoisomerase I inhibition was also hypothesized on the basis of in silico studies resorting to docking. The activation and inhibition of the most versatile intracellular signaling pathways (CREB, JNK, NFkB, p38, ERK1/2, Akt, p70S6K, STAT3 and STAT5 tyrosine kinases) responsible for cell proliferation and for initiation of apoptosis were studied by multiplex assay technology (Luminex xMAP).
Collapse
|
2
|
Makarov AA, Dzhemileva LU, Salimova AR, Makarova EK, Ramazanov IR, D'yakonov VA, Dzhemilev UM. New synthetic analogues of natural 5Z,9Z-dienoic acids: Stereoselective synthesis and study of the anticancer activity. Bioorg Chem 2020; 104:104303. [PMID: 33011528 DOI: 10.1016/j.bioorg.2020.104303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/05/2020] [Accepted: 09/20/2020] [Indexed: 12/23/2022]
Abstract
A stereoselective method was developed for the synthesis of synthetic analogues of natural 5Z,9Z-dienoic acids by esterification of aliphatic and aromatic alcohols and carboxylic acids with (5Z,9Z)-1,14-tetradeca-5,9-dienedioic acid and (5Z,9Z)-1,14-tetradeca-5,9-dienediol, synthesized by Ti-catalyzed homo-cyclomagnesiation of the tetrahydropyran ether of hepta-5,6-dien-1-ol with Grignard reagents. In order to establish the effect of molecular structure on the antitumor activity, the obtained 5Z,9Z-dienoic acids were tested for the inhibitory activity against human topoisomerase I, the cytotoxic activity in vitro against several cancer and normal cell lines (Jurkat, HL-60, K562, U937, fibroblasts), the effect on the cell cycle, and apoptosis-inducing ability using flow cytofluorometry. In addition, the effect of the synthesized acids on the cancer cell production of some phosphorylated and unphosphorylated proteins responsible for proliferation and apoptosis was studied by a new multiplex assay technology, MAGPIX.
Collapse
Affiliation(s)
- Alexey A Makarov
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Lilya U Dzhemileva
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation.
| | - Alfiya R Salimova
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Elina Kh Makarova
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Ilfir R Ramazanov
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Vladimir A D'yakonov
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation.
| | - Usein M Dzhemilev
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| |
Collapse
|
3
|
Oliveira CG, Romero-Canelón I, Silva MM, Coverdale JPC, Maia PIS, Batista AA, Castelli S, Desideri A, Sadler PJ, Deflon VM. Palladium(ii) complexes with thiosemicarbazones derived from pyrene as topoisomerase IB inhibitors. Dalton Trans 2020; 48:16509-16517. [PMID: 31670343 DOI: 10.1039/c9dt02570g] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
New palladium complexes with thiosemicarbazonate ligands derived from pyrene exhibit potent antiproliferative activity against A2780 and cisplatin-resistant A2780Cis human ovarian cancer cells, which is dependent on substituent groups of the thiosemicarbazone ligands. Cellular accumulation and distribution studies confirmed that palladium enters the cell nucleus. DNA and topoisomerase IB studies show that one complex is a potent TopIB inhibitor, with selectivity for cancer versus normal cells.
Collapse
Affiliation(s)
- Carolina G Oliveira
- São Carlos Institute of Chemistry, University of São Paulo, 13560-970, São Carlos, Brazil.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Ruiz-Torres V, Rodríguez-Pérez C, Herranz-López M, Martín-García B, Gómez-Caravaca AM, Arráez-Román D, Segura-Carretero A, Barrajón-Catalán E, Micol V. Marine Invertebrate Extracts Induce Colon Cancer Cell Death via ROS-Mediated DNA Oxidative Damage and Mitochondrial Impairment. Biomolecules 2019; 9:biom9120771. [PMID: 31771155 PMCID: PMC6995635 DOI: 10.3390/biom9120771] [Citation(s) in RCA: 17] [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: 09/02/2019] [Revised: 10/23/2019] [Accepted: 10/29/2019] [Indexed: 12/29/2022] Open
Abstract
Marine compounds are a potential source of new anticancer drugs. In this study, the antiproliferative effects of 20 invertebrate marine extracts on three colon cancer cell models (HGUE-C-1, HT-29, and SW-480) were evaluated. Extracts from two nudibranchs (Phyllidia varicosa, NA and Dolabella auricularia, NB), a holothurian (Pseudocol ochirus violaceus, PS), and a soft coral (Carotalcyon sp., CR) were selected due to their potent cytotoxic capacities. The four marine extracts exhibited strong antiproliferative effects and induced cell cycle arrest at the G2/M transition, which evolved into early apoptosis in the case of the CR, NA, and NB extracts and necrotic cell death in the case of the PS extract. All the extracts induced, to some extent, intracellular ROS accumulation, mitochondrial depolarization, caspase activation, and DNA damage. The compositions of the four extracts were fully characterized via HPLC-ESI-TOF-MS analysis, which identified up to 98 compounds. We propose that, among the most abundant compounds identified in each extract, diterpenes, steroids, and sesqui- and seterterpenes (CR); cembranolides (PS); diterpenes, polyketides, and indole terpenes (NA); and porphyrin, drimenyl cyclohexanone, and polar steroids (NB) might be candidates for the observed activity. We postulate that reactive oxygen species (ROS) accumulation is responsible for the subsequent DNA damage, mitochondrial depolarization, and cell cycle arrest, ultimately inducing cell death by either apoptosis or necrosis.
Collapse
Affiliation(s)
- Verónica Ruiz-Torres
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández (UMH), 03202 Elche, Spain; (V.R.-T.); (M.H.-L.); (V.M.)
| | - Celia Rodríguez-Pérez
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain (D.A.-R.); (A.S.-C.)
- Research and Development of Functional Food Centre (CIDAF), PTS Granada, Edificio BioRegion, 18016 Granada, Spain
| | - María Herranz-López
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández (UMH), 03202 Elche, Spain; (V.R.-T.); (M.H.-L.); (V.M.)
| | - Beatriz Martín-García
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain (D.A.-R.); (A.S.-C.)
- Research and Development of Functional Food Centre (CIDAF), PTS Granada, Edificio BioRegion, 18016 Granada, Spain
| | - Ana-María Gómez-Caravaca
- Research and Development of Functional Food Centre (CIDAF), PTS Granada, Edificio BioRegion, 18016 Granada, Spain
| | - David Arráez-Román
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain (D.A.-R.); (A.S.-C.)
- Research and Development of Functional Food Centre (CIDAF), PTS Granada, Edificio BioRegion, 18016 Granada, Spain
| | - Antonio Segura-Carretero
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, 18071 Granada, Spain (D.A.-R.); (A.S.-C.)
- Research and Development of Functional Food Centre (CIDAF), PTS Granada, Edificio BioRegion, 18016 Granada, Spain
| | - Enrique Barrajón-Catalán
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández (UMH), 03202 Elche, Spain; (V.R.-T.); (M.H.-L.); (V.M.)
- Correspondence: ; Tel.: +34-965-222-586
| | - Vicente Micol
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández (UMH), 03202 Elche, Spain; (V.R.-T.); (M.H.-L.); (V.M.)
- CIBER, Fisiopatología de la Obesidad y la Nutrición, CIBERobn, Instituto de Salud Carlos III., Palma de Mallorca 07122, Spain
| |
Collapse
|
5
|
Dzhemileva LU, D’yakonov VA, Dil’mukhametova LK, Dzhemilev UM. Synthesis of New Cu Complex Based on Natural 5 Z,9 Z-Eicosadienoic Acid: Effective Topoisomerase I Inhibitor and Cytotoxin against the Cisplatin-Resistant Cell Line. ACS OMEGA 2019; 4:17581-17587. [PMID: 31656933 PMCID: PMC6812112 DOI: 10.1021/acsomega.9b02756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/30/2019] [Indexed: 05/17/2023]
Abstract
The complex (bipy)2Cu(5,9-eicd) was prepared by the reaction of Cu(OAc)2 with 5Z,9Z-eicosadienoic acid and 2,2'-bipyridine in methanol. The new copper complex showed high antitumor activity in vitro toward A2780cis, A2780, Hek293, K562, HL60, Jurkat, and U937 cell lines and efficiently inhibited human topoisomerase I. Using flow cytofluorometry, (bipy)2Cu(5,9-eicd) was studied for the effect on the cell cycle and apoptosis-inducing activity in tumor cells.
Collapse
Affiliation(s)
- Lilya U. Dzhemileva
- Institute of Petrochemistry
and Catalysis of RAS (IPC RAS), Prospect Octyabrya, 141, 450075 Ufa, Russian Federation
| | - Vladimir A. D’yakonov
- Institute of Petrochemistry
and Catalysis of RAS (IPC RAS), Prospect Octyabrya, 141, 450075 Ufa, Russian Federation
| | - Leisan K. Dil’mukhametova
- Institute of Petrochemistry
and Catalysis of RAS (IPC RAS), Prospect Octyabrya, 141, 450075 Ufa, Russian Federation
| | - Usein M. Dzhemilev
- Institute of Petrochemistry
and Catalysis of RAS (IPC RAS), Prospect Octyabrya, 141, 450075 Ufa, Russian Federation
| |
Collapse
|
6
|
Carballeira NM, Alequín D, Lotti Diaz LM, Matos VJ, Ferreira LLG, Andricopulo AD, Golovko MY, Reguera RM, Pérez-Pertejo Y, Balaña-Fouce R. Synthesis of a novel brominated vinylic fatty acid with antileishmanial activity that effectively inhibits the Leishmania topoisomerase IB enzyme mediated by halogen bond formation. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2018-1113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Many marine derived fatty acids, mainly from sponges, possess vinylic halogenated moieties (bromine or iodine) but their assessment as antileishmanial candidates remains elusive. In this work, we undertook the first total synthesis of a novel series of 2-allyl-3-halo-2-nonadecenoic acids, which preferentially inhibit the Leishmania DNA topoisomerase IB enzyme (LTopIB) over the human topoisomerase IB enzyme (hTopIB). The synthesis of 2-allyl-3-bromo-2E-nonadecenoic acid (1a) and 2-allyl-3-chloro-2E-nonadecenoic acid (2a) was achieved through a palladium catalyzed haloallylation of 2-nonadecynoic acid (2-NDA) using either allyl bromide or allyl chloride in the presence of PdCl2(PhCN)2 in 57–83 % overall yields. Among the new halogenated synthetic compounds, 1a was the most inhibitory of LTopIB with an EC50 = 7 μM, while the shorter chain analogs 2-allyl-3-bromo-2E-dodecenoic acid (1b) and 2-allyl-3-chloro-2E-dodecenoic acid (2b), synthesized from 2-dodecynoic acid, were not inhibitory of LTopIB (EC50 > 100 μM) resulting in the overall order of inhibition 1a > 2-NDA > 2a > > 1b ≅ 2b. The acids 1a and 2a inhibit LTopIB by a Gimatecan-independent mechanism. The enhanced LTopIB inhibition of 1a was computationally rationalized in terms of a halogen bond between the bromine in 1a and a DNA phosphate (binding energy = − 4.85 kcal/mol). Acid 1a also displayed preferential cytotoxicity towards Leishmania infantum amastigotes (EC50 = 2.5 μM) over L. infantum promastigotes (EC50 > 25 μM).
Collapse
Affiliation(s)
- Néstor M. Carballeira
- University of Puerto Rico , Río Piedras Campus, 17 Ave Universidad STE 1701 , San Juan, PR 00925-2537 , USA , Tel.: (787)-764-0000 ext, 88561
| | - Denisse Alequín
- Department of Chemistry , University of Puerto Rico , Río Piedras Campus , San Juan, PR , USA
| | - Leilani M. Lotti Diaz
- Department of Chemistry , University of Puerto Rico , Río Piedras Campus , San Juan, PR , USA
| | - Victorio Jauregui Matos
- Department of Chemistry , University of Puerto Rico , Río Piedras Campus , San Juan, PR , USA
| | - Leonardo L. G. Ferreira
- Laboratory of Medicinal and Computational Chemistry, Center for Research and Innovation in Biodiversity and Drug Discovery, Physics Institute of Sao Carlos, University of Sao Paulo , Sao Carlos , SP 13563-120 , Brazil
| | - Adriano D. Andricopulo
- Laboratory of Medicinal and Computational Chemistry, Center for Research and Innovation in Biodiversity and Drug Discovery, Physics Institute of Sao Carlos, University of Sao Paulo , Sao Carlos , SP 13563-120 , Brazil
| | - Mikhail Y. Golovko
- Department of Biomedical Sciences , University of North Dakota School of Medicine and Health Sciences , 1301 N Columbia Road , Grand Forks, ND 58202-9037 , USA
| | - Rosa M. Reguera
- Department of Biomedical Sciences , University of León , Campus de Vegazana , León 24071 , Spain
| | - Yolanda Pérez-Pertejo
- Department of Biomedical Sciences , University of León , Campus de Vegazana , León 24071 , Spain
| | - Rafael Balaña-Fouce
- Department of Biomedical Sciences , University of León , Campus de Vegazana , León 24071 , Spain
| |
Collapse
|
7
|
da Silva MM, de Camargo MS, Correa RS, Castelli S, De Grandis RA, Takarada JE, Varanda EA, Castellano EE, Deflon VM, Cominetti MR, Desideri A, Batista AA. Non-mutagenic Ru(ii) complexes: cytotoxicity, topoisomerase IB inhibition, DNA and HSA binding. Dalton Trans 2019; 48:14885-14897. [DOI: 10.1039/c9dt01905g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein we discuss five ruthenium(ii) complexes with good cytotoxicity against cancer cells.
Collapse
Affiliation(s)
| | | | - Rodrigo S. Correa
- Departamento de Química
- Universidade Federal de Ouro Preto
- Ouro Preto
- Brazil
| | - Silvia Castelli
- Dipartimentodi Biologia
- UniversitàTorVergatadi Roma
- 00133 Rome
- Italy
| | - Rone A. De Grandis
- Departamento de Ciências Biológicas
- Faculdade de Ciências Farmacêuticas
- UNESP
- Araraquara
- Brazil
| | | | - Eliana A. Varanda
- Departamento de Ciências Biológicas
- Faculdade de Ciências Farmacêuticas
- UNESP
- Araraquara
- Brazil
| | | | - Victor M. Deflon
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Marcia R. Cominetti
- Departamento de Gerontologia
- Universidade Federal de São Carlos
- São Carlos
- Brazil
| | | | - Alzir A. Batista
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos
- Brazil
| |
Collapse
|
8
|
Bansal S, Sur S, Tandon V. Benzimidazoles: Selective Inhibitors of Topoisomerase I with Differential Modes of Action. Biochemistry 2018; 58:809-817. [DOI: 10.1021/acs.biochem.8b01102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sandhya Bansal
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Souvik Sur
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Vibha Tandon
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| |
Collapse
|
9
|
Castelli S, Gonçalves MB, Katkar P, Stuchi GC, Couto RAA, Petrilli HM, da Costa Ferreira AM. Comparative studies of oxindolimine-metal complexes as inhibitors of human DNA topoisomerase IB. J Inorg Biochem 2018; 186:85-94. [PMID: 29860208 DOI: 10.1016/j.jinorgbio.2018.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/18/2018] [Accepted: 05/20/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Silvia Castelli
- Department of Biology, University of Rome Tor Vergata, Via Della Ricerca Scientifica, Rome 00133, Italy
| | - Marcos Brown Gonçalves
- Departamento de Física, Universidade Tecnológica Federal do Paraná, 80230-901 Curitiba, PR, Brazil
| | - Prafulla Katkar
- Department of Biology, University of Rome Tor Vergata, Via Della Ricerca Scientifica, Rome 00133, Italy
| | - Gabriela Cristina Stuchi
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil
| | - Ricardo Alexandre Alves Couto
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil
| | - Helena Maria Petrilli
- Departamento de Física dos Materiais e Mecânica, Instituto de Física, Universidade de São Paulo, 05508-090 São Paulo, SP, Brazil
| | - Ana Maria da Costa Ferreira
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.
| |
Collapse
|
10
|
Advances in the Chemistry of Natural and Semisynthetic Topoisomerase I/II Inhibitors. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63929-5.00002-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
11
|
Dzhemilev UM, D'yakonov VA, Tuktarova RA, Dzhemileva LU, Ishmukhametova SR, Yunusbaeva MM, de Meijere A. Short Route to the Total Synthesis of Natural Muricadienin and Investigation of Its Cytotoxic Properties. JOURNAL OF NATURAL PRODUCTS 2016; 79:2039-2044. [PMID: 27533261 DOI: 10.1021/acs.jnatprod.6b00335] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An original synthesis of the acetogenin muricadienin, the bioprecursor of solamin, has been developed. The key step in the five-step 41% overall yield synthesis is the catalytic cross-cyclomagnesiation reaction of functionally substituted 1,2-dienes with EtMgBr in the presence of Cp2TiCl2 and magnesium metal. It has been demonstrated for the first time that muricadienin exhibits a moderate in vitro inhibitory activity against topoisomerases I and IIα, key cell cycle enzymes. Using flow cytometry, muricadienin was shown to have high cytotoxicity toward the HEK293 kidney cancer cells (IC50 0.39 μM).
Collapse
Affiliation(s)
- Usein M Dzhemilev
- Laboratory of Catalytic Synthesis, Institute of Petrochemistry and Catalysis of RAS (IPC RAS) , Prospect Octyabrya, 141, 450075, Ufa, Russian Federation
| | - Vladimir A D'yakonov
- Laboratory of Catalytic Synthesis, Institute of Petrochemistry and Catalysis of RAS (IPC RAS) , Prospect Octyabrya, 141, 450075, Ufa, Russian Federation
| | - Regina A Tuktarova
- Laboratory of Catalytic Synthesis, Institute of Petrochemistry and Catalysis of RAS (IPC RAS) , Prospect Octyabrya, 141, 450075, Ufa, Russian Federation
| | - Lilya U Dzhemileva
- Laboratory of Catalytic Synthesis, Institute of Petrochemistry and Catalysis of RAS (IPC RAS) , Prospect Octyabrya, 141, 450075, Ufa, Russian Federation
- Department of Immunology and Human Reproductive Health, Bashkir State Medical University , Lenin Street, 3, 450003, Ufa, Russian Federation
- Institute of Biochemistry and Genetics, Ufa Scientific Centre of Russian Academy of Sciences , Prospect Octyabrya, 71, 450054, Ufa, Russian Federation
| | - Svetlana R Ishmukhametova
- Laboratory of Catalytic Synthesis, Institute of Petrochemistry and Catalysis of RAS (IPC RAS) , Prospect Octyabrya, 141, 450075, Ufa, Russian Federation
| | - Milyausha M Yunusbaeva
- Institute of Biochemistry and Genetics, Ufa Scientific Centre of Russian Academy of Sciences , Prospect Octyabrya, 71, 450054, Ufa, Russian Federation
| | - Armin de Meijere
- Institut für Organische und Biomolekulare Chemie der Georg-August-Universität Göttingen , Tammannstrasse 2, 37077 Göttingen, Germany
| |
Collapse
|
12
|
Vutey V, Castelli S, D'Annessa I, Sâmia LBP, Souza-Fagundes EM, Beraldo H, Desideri A. Human topoisomerase IB is a target of a thiosemicarbazone copper(II) complex. Arch Biochem Biophys 2016; 606:34-40. [PMID: 27431056 DOI: 10.1016/j.abb.2016.07.009] [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] [Received: 03/14/2016] [Revised: 06/30/2016] [Accepted: 07/12/2016] [Indexed: 02/03/2023]
Abstract
The human topoisomerase IB inhibition and the antiproliferative activity of 3-(4-bromophenyl)-1-pyridin-2-ylprop-2-en-1-one thiosemicarbazone HPyCT4BrPh alone and its copper(II) complex [Cu(PyCT4BrPh)Cl] was investigated. [Cu(PyCT4BrPh)Cl] inhibits both the DNA cleavage and religation step of the enzyme, whilst the ligand alone does not display any effect. In addition we show that coordination to copper(II) improves the cytotoxicity of HPyCT4BrPh against THP-1 leukemia and MCF-7 breast cancer cells. The data indicate that the copper(II) thiosemicarbazone complex may hit human topoisomerase IB and that metal coordination can be useful to improve cytotoxicity of this versatile class of compounds.
Collapse
Affiliation(s)
- Venn Vutey
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Silvia Castelli
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Ilda D'Annessa
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Luciana B P Sâmia
- Departamento de Química, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | - Elaine M Souza-Fagundes
- Departamento de Química, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | - Heloisa Beraldo
- Departamento de Química, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | | |
Collapse
|
13
|
Carballeira NM, Montano N, Amador LA, Rodríguez AD, Golovko MY, Golovko SA, Reguera RM, Álvarez-Velilla R, Balaña-Fouce R. Novel Very Long-Chain α-Methoxylated Δ5,9 Fatty Acids from the Sponge Asteropus niger Are Effective Inhibitors of Topoisomerases IB. Lipids 2015; 51:245-56. [PMID: 26694606 DOI: 10.1007/s11745-015-4114-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 12/04/2015] [Indexed: 12/14/2022]
Abstract
The novel fatty acids (2R,5Z,9Z)-2-methoxy-25-methyl-5,9-hexacosadienoic acid (1a) and (2R,5Z,9Z)-2-methoxy-24-methyl-5,9-hexacosadienoic acid (1b) were isolated in 80 % purity from the Caribbean sponge Asteropus niger by chloroform/methanol extraction followed by solvent partitioning and silica gel column chromatography. The compounds were characterized by utilizing a combination of gas chromatography-mass spectrometry, nuclear magnetic resonance, and circular dichroism. Acids 1a and 1b were not detected in the phospholipids (PtdCho and PtdIns) of the sponge, but rather as free FA and possibly in glycosylceramides. The mixtures of 1a and 1b displayed cytotoxicity towards THP-1 and HepG2 cells with EC50's between 41 and 35 μg/mL. Apoptosis was not the preferred mode of cell death induced by 1a-1b in the THP-1 cells. This implies other types of cytotoxicity mechanisms, such as membrane disruption and/or the inhibition (EC50 = 1.8 μg/mL) of the human topoisomerase IB enzyme (hTopIB), with a mechanism of inhibition different from the one displayed by camptothecin (CPT). In a separate experiment, the mixture of 1a and 1b also displayed cytotoxicity towards ex vivo mouse splenocytes infected with Leishmania infantum amastigotes (IC(50) = 0.17 mg/mL) and free living promastigotes (IC(50) = 0.34 mg/mL). It was also found that the FA were inhibitory of the Leishmania topoisomerase IB (LTopIB) with an EC(50) = 5.1 μg/mL. Taken together, 1a and 1b represent a new class of FA with potential as TopIB inhibitors that preferentially inhibit hTopIB over LTopIB.
Collapse
Affiliation(s)
- Néstor M Carballeira
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, PR, 00931-3346, USA.
| | - Nashbly Montano
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, PR, 00931-3346, USA
| | - Luis A Amador
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, PR, 00931-3346, USA
| | - Abimael D Rodríguez
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, PR, 00931-3346, USA
| | - Mikhail Y Golovko
- Department of Basic Sciences, University of North Dakota, Grand Forks, ND, 58202-9037, USA
| | - Svetlana A Golovko
- Department of Basic Sciences, University of North Dakota, Grand Forks, ND, 58202-9037, USA
| | - Rosa M Reguera
- Department of Biomedical Sciences, University of León, Campus de Vegazana s/n, 24071, León, Spain
| | - Raquel Álvarez-Velilla
- Department of Biomedical Sciences, University of León, Campus de Vegazana s/n, 24071, León, Spain
| | - Rafael Balaña-Fouce
- Department of Biomedical Sciences, University of León, Campus de Vegazana s/n, 24071, León, Spain
| |
Collapse
|
14
|
Vieira S, Castelli S, Falconi M, Takarada J, Fiorillo G, Buzzetti F, Lombardi P, Desideri A. Role of 13-(di)phenylalkyl berberine derivatives in the modulation of the activity of human topoisomerase IB. Int J Biol Macromol 2015; 77:68-75. [PMID: 25783020 DOI: 10.1016/j.ijbiomac.2015.02.051] [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: 10/09/2014] [Revised: 02/26/2015] [Accepted: 02/28/2015] [Indexed: 12/25/2022]
Abstract
Topoisomerases IB are anticancer and antimicrobial targets whose inhibition by several natural and non-natural compounds has been documented. The inhibition effect by berberine and some 13-(di)phenylalkyl berberine derivatives has been tested towards human topoisomerase IB. Derivatives belonging to the 13-diphenylalkyl series display an efficient inhibition of the DNA relaxation and cleavage step, that increases upon pre-incubation with the enzyme. The religation step of the enzyme catalytic cycle is not affected by compounds and only slightly upon pre-incubation. The binding of the protein to the DNA substrate occurs also in the presence of the compounds, as monitored by a DNA shift assay, indicating that the compounds are not able to inhibit the formation of the enzyme-DNA complex but that they act as catalytic inhibitors.
Collapse
Affiliation(s)
- Sara Vieira
- University of Rome Tor Vergata, Department of Biology, Via Della Ricerca Scientifica, 00133 Rome, Italy
| | - Silvia Castelli
- University of Rome Tor Vergata, Department of Biology, Via Della Ricerca Scientifica, 00133 Rome, Italy
| | - Mattia Falconi
- University of Rome Tor Vergata, Department of Biology, Via Della Ricerca Scientifica, 00133 Rome, Italy
| | - Jéssica Takarada
- University of Rome Tor Vergata, Department of Biology, Via Della Ricerca Scientifica, 00133 Rome, Italy
| | - Gaetano Fiorillo
- Naxospharma srl, Via G. Di Vittorio, 70, 20026 Novate Milanese, Italy
| | - Franco Buzzetti
- Naxospharma srl, Via G. Di Vittorio, 70, 20026 Novate Milanese, Italy
| | - Paolo Lombardi
- Naxospharma srl, Via G. Di Vittorio, 70, 20026 Novate Milanese, Italy
| | - Alessandro Desideri
- University of Rome Tor Vergata, Department of Biology, Via Della Ricerca Scientifica, 00133 Rome, Italy.
| |
Collapse
|
15
|
Katkar P, Coletta A, Castelli S, Sabino GL, Couto RAA, Ferreira AMDC, Desideri A. Effect of oxindolimine copper(II) and zinc(II) complexes on human topoisomerase I activity. Metallomics 2014; 6:117-25. [PMID: 24172750 DOI: 10.1039/c3mt00099k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ability of oxindolimine copper(II) and zinc(II) complexes, known to have antitumor activity, to inhibit human topoisomerase IB has been tested through enzymatic kinetic assays and molecular docking simulations. These copper and zinc compounds are able to inhibit remarkably the cleavage reaction and only partially the religation step, the copper compound being more efficient than the zinc one. A complete inhibition activity of the cleavage is only obtained when the enzyme is pre-incubated with the compound, the inhibition being irreversible and reversible for the copper and zinc compounds, respectively. The relative stability of such complexes was estimated by competitive equilibria with human serum albumin (HSA), monitored by CD spectroscopy. The copper species shows a log KCuL = 17.2, while the analogous zinc complex exhibits a log KZnL = 7.2. Molecular docking simulation studies show that the almost square planar geometry of the copper compound allows a direct coordination of the metal with two amino acids (Glu492, Asp563) of the enzyme at variance of the zinc compound which has a more tetrahedral geometry. Altogether, the data indicate that the different coordination geometry achieved by the two transition metal ions has an important role in modulating their efficiency as topoisomerase I inhibitors.
Collapse
Affiliation(s)
- Prafulla Katkar
- Dipartimento di Biologia, Università Tor Vergata di Roma, 00173 Roma, Italy.
| | | | | | | | | | | | | |
Collapse
|
16
|
Carballeira NM, Montano N, Alvarez-Velilla R, Prada CF, Reguera RM, Balaña-Fouce R. Synthesis of marine α-methoxylated fatty acid analogs that effectively inhibit the topoisomerase IB from Leishmania donovani with a mechanism different from that of camptothecin. Mar Drugs 2013; 11:3661-75. [PMID: 24084785 PMCID: PMC3826128 DOI: 10.3390/md11103661] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 09/01/2013] [Accepted: 09/10/2013] [Indexed: 11/16/2022] Open
Abstract
Sponges biosynthesize α-methoxylated fatty acids with unusual biophysical and biological properties and in some cases they display enhanced anticancer activities. However, the antiprotozoal properties of the α-methoxylated fatty acids have been less studied. In this work, we describe the total synthesis of (5Z,9Z)-(±)-2-methoxy-5, 9-eicosadienoic acid (1) and its acetylenic analog (±)-2-methoxy-5,9-eicosadiynoic acid (2), and report that they inhibit (EC₅₀ values between 31 and 22 µM) the Leishmania donovani DNA topoisomerase IB enzyme (LdTopIB). The inhibition of LdTopIB (EC₅₀ = 53 µM) by the acid (±)-2-methoxy-6-icosynoic acid (12) was studied as well. The potency of LdTopIB inhibition followed the trend 2 > 1 > 12, indicating that the effectiveness of inhibition depends on the degree of unsaturation. All of the studied α-methoxylated fatty acids failed to inhibit the human topoisomerase IB enzyme (hTopIB) at 100 µM. However, the α-methoxylated fatty acids were capable of inhibiting an active but truncated LdTopIB with which camptothecin (CPT) cannot interact suggesting that the methoxylated fatty acids inhibit LdTopIB with a mechanism different from that of CPT. The diunsaturated fatty acids displayed low cytotoxicity towards Leishmania infantum promastigotes (EC₅₀ values between 260 and 240 µM), but 12 displayed a better cytotoxicity towards Leishmania donovani promastigotes (EC₅₀ = 100 µM) and a better therapeutic index.
Collapse
Affiliation(s)
- Néstor M. Carballeira
- Department of Chemistry, University of Puerto Rico, PO Box 23346, San Juan 00931-3346, Puerto Rico; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1809-787-764-0000 (ext. 4791); Fax: +1809-787-756-8242
| | - Nashbly Montano
- Department of Chemistry, University of Puerto Rico, PO Box 23346, San Juan 00931-3346, Puerto Rico; E-Mail:
| | - Raquel Alvarez-Velilla
- Department of Biomedical Sciences, University of León, Campus de Vegazana s/n, León 24071, Spain; E-Mails: (R.A.-V.); (R.M.R.); (R.B.-F.)
| | - Christopher F. Prada
- Infectious Diseases Research Center of the CHUL of Québec and Laval University, Québec City, Québec G1V 4G2, Canada; E-Mail:
| | - Rosa M. Reguera
- Department of Biomedical Sciences, University of León, Campus de Vegazana s/n, León 24071, Spain; E-Mails: (R.A.-V.); (R.M.R.); (R.B.-F.)
| | - Rafael Balaña-Fouce
- Department of Biomedical Sciences, University of León, Campus de Vegazana s/n, León 24071, Spain; E-Mails: (R.A.-V.); (R.M.R.); (R.B.-F.)
| |
Collapse
|
17
|
Carballeira NM. Recent developments in the antiprotozoal and anticancer activities of the 2-alkynoic fatty acids. Chem Phys Lipids 2013; 172-173:58-66. [PMID: 23727443 DOI: 10.1016/j.chemphyslip.2013.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/03/2013] [Accepted: 05/06/2013] [Indexed: 12/21/2022]
Abstract
The 2-alkynoic fatty acids are an interesting group of synthetic compounds that display antimycobacterial, antifungal, anticancer, and pesticidal activities but their antiprotozoal activity has received little attention until recently. In this review we have summarized our present knowledge of the biomedical potential of the 2-hexadecynoic acid (2-HDA) and 2-octadecynoic acid (2-ODA) together with several mechanistic pieces of work attesting to the fact that these compounds, and their metabolites, are good fatty acid biosynthesis inhibitors. The antiprotozoal activity of 2-HDA and 2-ODA against Leishmania donovani and Plasmodium falciparum, parasites responsible for visceral leishmaniasis and malaria, respectively, is also reviewed. The evidence obtained so far supports the fact that these fatty acids are good inhibitors of the L. donovani DNA topoisomerase IB enzyme (LdTopIB) and the potency of LdTopIB inhibition is chain length dependent. We also demonstrate the generality of the antiprotozoal activity of 2-HDA and 2-ODA against P. falciparum, and review our present knowledge of their inhibition of key P. falciparum enzymes such as PfFabZ, PfFabG, and PfFabI together with some possible modes of inhibition. Recent research by our group has also demonstrated that 2-ODA displays antineoplastic activity, specifically against the neuroblastoma SH-SY5Y cell line via lactate dehydrogenase (LDH) release, which is a cell death mechanism principally associated to necrosis. This is the first comprehensive review of the medicinal chemistry of this interesting group of acetylenic fatty acids.
Collapse
Affiliation(s)
- Néstor M Carballeira
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan 00931-3346, Puerto Rico.
| |
Collapse
|
18
|
A small organic compound enhances the religation reaction of human topoisomerase I and identifies crucial elements for the religation mechanism. Biosci Rep 2013; 33:e00025. [PMID: 23368812 PMCID: PMC3590572 DOI: 10.1042/bsr20120118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The different steps of the human Top1 (topoisomerase I) catalytic cycle have been analysed in the presence of a pentacyclic-diquinoid synthetic compound. The experiments indicate that it efficiently inhibits the cleavage step of the enzyme reaction, fitting well into the catalytic site. Surprisingly the compound, when incubated with the binary topoisomerase-DNA cleaved complex, helps the enzyme to remove itself from the cleaved DNA and close the DNA gap, increasing the religation rate. The compound also induces the religation of the stalled enzyme-CPT (camptothecin)-DNA ternary complex. Analysis of the molecule docked over the binary complex, together with its chemical properties, suggests that the religation enhancement is due to the presence on the compound of two oxygen atoms that act as hydrogen acceptors. This property facilitates the deprotonation of the 5' DNA end, suggesting that this is the limiting step in the topoisomerase religation mechanism.
Collapse
|
19
|
Jahan Z, Castelli S, Aversa G, Rufini S, Desideri A, Giovanetti A. Role of human topoisomerase IB on ionizing radiation induced damage. Biochem Biophys Res Commun 2013; 432:545-8. [DOI: 10.1016/j.bbrc.2013.02.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 02/10/2013] [Indexed: 10/27/2022]
|
20
|
Castelli S, Vieira S, D'Annessa I, Katkar P, Musso L, Dallavalle S, Desideri A. A derivative of the natural compound kakuol affects DNA relaxation of topoisomerase IB inhibiting the cleavage reaction. Arch Biochem Biophys 2012; 530:7-12. [PMID: 23262316 DOI: 10.1016/j.abb.2012.12.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 12/06/2012] [Accepted: 12/09/2012] [Indexed: 11/28/2022]
Abstract
Topoisomerases IB are anticancer and antimicrobial targets whose inhibition by several natural and synthetic compounds has been documented over the last three decades. Here we show that kakuol, a natural compound isolated from the rhizomes of Asarum sieboldii, and a derivative analogue are able to inhibit the DNA relaxation mediated by the human enzyme. The analogue is the most efficient one and the inhibitory effect is enhanced upon pre-incubation with the enzyme. Analysis of the different steps of the catalytic cycle indicates that the inhibition occurs at the cleavage level and does not prevent DNA binding. Molecular docking shows that the compound preferentially binds near the active site at the bottom of the catalytic residue Tyr723, providing an atomistic explanation for its inhibitory activity.
Collapse
Affiliation(s)
- Silvia Castelli
- University of Rome Tor Vergata, Department of Biology, Via Della Ricerca Scientifica, 00133 Rome, Italy
| | | | | | | | | | | | | |
Collapse
|
21
|
Carballeira NM, Cartagena M, Sanabria D, Tasdemir D, Prada CF, Reguera RM, Balaña-Fouce R. 2-Alkynoic fatty acids inhibit topoisomerase IB from Leishmania donovani. Bioorg Med Chem Lett 2012; 22:6185-9. [PMID: 22932312 DOI: 10.1016/j.bmcl.2012.08.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 07/20/2012] [Accepted: 08/01/2012] [Indexed: 10/28/2022]
Abstract
2-Alkynoic fatty acids display antimycobacterial, antifungal, and pesticidal activities but their antiprotozoal activity has received little attention. In this work we synthesized the 2-octadecynoic acid (2-ODA), 2-hexadecynoic acid (2-HDA), and 2-tetradecynoic acid (2-TDA) and show that 2-ODA is the best inhibitor of the Leishmania donovani DNA topoisomerase IB enzyme (LdTopIB) with an EC(50)=5.3±0.7μM. The potency of LdTopIB inhibition follows the trend 2-ODA>2-HDA>2-TDA, indicating that the effectiveness of inhibition depends on the fatty acid carbon chain length. All of the studied 2-alkynoic fatty acids were less potent inhibitors of the human topoisomerase IB enzyme (hTopIB) as compared to LdTopIB. 2-ODA also displayed in vitro activity against Leishmania donovani (IC(50)=11.0μM), but it was less effective against other protozoa, Trypanosoma cruzi (IC(50)=48.1μM) and Trypanosoma brucei rhodesiense (IC(50)=64.5μM). The antiprotozoal activity of the 2-alkynoic fatty acids, in general, followed the trend 2-ODA>2-HDA>2-TDA. The experimental information gathered so far indicates that 2-ODA is a promising antileishmanial compound.
Collapse
Affiliation(s)
- Néstor M Carballeira
- Department of Chemistry, University of Puerto Rico, PO Box 23346, San Juan 00931-3346, Puerto Rico.
| | | | | | | | | | | | | |
Collapse
|
22
|
Carballeira NM, Cartagena M, Li F, Chen Z, Prada CF, Calvo-Alvarez E, Reguera RM, Balaña-Fouce R. First total synthesis of the (±)-2-methoxy-6-heptadecynoic acid and related 2-methoxylated analogs as effective inhibitors of the leishmania topoisomerase IB enzyme. ACTA ACUST UNITED AC 2012; 84:1867-1875. [PMID: 23118491 DOI: 10.1351/pac-con-11-10-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The fatty acids (±)-2-methoxy-6Z-heptadecenoic acid (1), (±)-2-methoxy-6-heptadecynoic acid (2) and (±)-2-methoxyheptadecanoic acid (3) were synthesized and their inhibitory activity against the Leishmania DNA topoisomerase IB enzyme (LdTopIB) determined. Acids 1 and 2 were synthesized from 4-bromo-1-pentanol, the former in ten steps and in 7% overall yield, while the latter in seven steps and in 14% overall yield. Acid 3 was prepared in six steps and in 42% yield from 1-hexadecanol. Acids 1-3 inhibited the LdTopIB enzyme following the order 2 > 1 ⪢ 3, with 2 displaying an EC(50) = 16.6 ± 1.1 μM and 3 not inhibiting the enzyme. Acid 1 preferentially inhibited the LdTopIB enzyme over the human TopIB enzyme. Unsaturation seems to be a prerequisite for effective inhibition, rationalized in terms of weak intermolecular interactions between the active site of LdTopIB and either the double or triple bonds of the fatty acids. Toxicity towards Leishmania donovani promastigotes was also investigated resulting in the same order 2 > 1 > 3, with 2 displaying an EC(50) = 74.0 ± 17.1 μM. Our results indicate that α-methoxylation decreases the toxicity of C(17:1) fatty acids towards L. donovani promastigotes, but improves their selectivity index.
Collapse
Affiliation(s)
- Néstor M Carballeira
- Department of Chemistry, University of Puerto Rico, Rio Piedras campus, PO Box 23346, San Juan, Puerto Rico
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Inhibition of human DNA topoisomerase IB by a Cyclometalated Gold III compound: Analysis on the different steps of the enzyme catalytic cycle. Arch Biochem Biophys 2011; 516:108-12. [DOI: 10.1016/j.abb.2011.10.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 10/10/2011] [Accepted: 10/12/2011] [Indexed: 01/24/2023]
|
24
|
Saha SC, Kunadharaju S, Sivakumar B, Savva M. Kinetic and thermodynamic analysis of 9-nitrocamptothecin hydrolysis at physiological pH in the presence and absence of human serum albumin. INT J CHEM KINET 2010. [DOI: 10.1002/kin.20508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
25
|
Bruzzese F, Rocco M, Castelli S, Di Gennaro E, Desideri A, Budillon A. Synergistic antitumor effect between vorinostat and topotecan in small cell lung cancer cells is mediated by generation of reactive oxygen species and DNA damage-induced apoptosis. Mol Cancer Ther 2009; 8:3075-87. [DOI: 10.1158/1535-7163.mct-09-0254] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|