51
|
Vogel TJ, Jeon C, Karlan B, Walsh C. Digoxin therapy is not associated with improved survival in epithelial ovarian cancer: A SEER-Medicare database analysis. Gynecol Oncol 2015; 140:285-8. [PMID: 26691221 DOI: 10.1016/j.ygyno.2015.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 12/03/2015] [Accepted: 12/11/2015] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Both in vitro and clinical trial data suggest that cardiac glycosides demonstrate a synergistic anti-tumor effect when administered with platinum chemotherapy. Epidemiologic studies have also demonstrated improved cancer survival in colorectal, breast, head and neck and hepatocellular carcinoma patients on digoxin therapy at the time of cancer treatment. We sought to determine whether digoxin improves survival in epithelial ovarian cancer patients treated with platinum. METHODS Surveillance, Epidemiology and End-Results (SEER) tumor registries program data on ovarian cancer patients diagnosed in 2007-2009 were linked to Medicare claims data to capture platinum administration, digoxin use and cardiac comorbidities. We analyzed 762 patients who underwent cancer-directed surgery and received platinum chemotherapy. Patients were considered digoxin users during platinum administration if a prescription was filled within 6months of cancer diagnosis. Cox proportional hazards regression models were used to determine the impact of digoxin use on overall survival (OS). RESULTS Among 762 epithelial ovarian cancer patients treated with surgery and platinum chemotherapy, 53 (7%) used digoxin ever and 38 (5%) used digoxin specifically during platinum administration. Adjusting for age, heart disease and Charlson comorbidity score, digoxin use was not associated with OS (HR=1.29, 95% CI 0.81, 2.06). CONCLUSIONS In this SEER-Medicare database analysis, digoxin use during chemotherapy was not associated with improved OS outcomes in patients with epithelial ovarian cancer treated with surgery and platinum chemotherapy. These conclusions are limited, however, by a small sample size and bias intrinsic to claims-based data and should be further evaluated in a larger cohort.
Collapse
Affiliation(s)
- Tilley Jenkins Vogel
- Women's Cancer Program at the Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Suite 290 West Tower, Los Angeles, CA 90048, USA.
| | - Christie Jeon
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, 8700 Beverly Boulevard 1S33, Los Angeles, CA 90048, USA.
| | - Beth Karlan
- Women's Cancer Program at the Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Suite 290 West Tower, Los Angeles, CA 90048, USA.
| | - Christine Walsh
- Women's Cancer Program at the Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Suite 290 West Tower, Los Angeles, CA 90048, USA.
| |
Collapse
|
52
|
Fiorito S, Genovese S, Taddeo VA, Mathieu V, Kiss R, Epifano F. Novel juglone and plumbagin 5-O derivatives and their in vitro growth inhibitory activity against apoptosis-resistant cancer cells. Bioorg Med Chem Lett 2015; 26:334-337. [PMID: 26706169 DOI: 10.1016/j.bmcl.2015.12.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/03/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
Juglone 1 an plumbagin 2 are plant secondary metabolites nowadays well known for their anticancer properties. In this study we synthesized analogues of 1 and 2 deriving from the functionalization of the OH group in position 5 with different side chains in form of esters and ethers. Therefore the growth inhibitory activities of these adducts were evaluated in vitro on six cancer cell lines using the MTT colorimetric assays along with the two natural parent compounds. The data revealed that these latter displayed the strongest growth inhibitory activities in vitro. Quantitative videomicroscopy analyses were then carried out on human U373 glioblastoma cells, which are characterized by various level of resistance to pro-apoptotic stimuli. We compared the naturally occurring reference compounds 1 and 2 with the derivatives exerting the best activities in terms of IC50 growth inhibitory values. These analyses showed that both juglone and plumbagin had a cytostatic effect on U373 cells and were able to overcome the intrinsic resistance of U373 cancer cells to pro-apoptotic stimuli.
Collapse
Affiliation(s)
- Serena Fiorito
- Dipartimento di Farmacia, Università 'G. D'Annunzio' Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Salvatore Genovese
- Dipartimento di Farmacia, Università 'G. D'Annunzio' Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Vito Alessandro Taddeo
- Dipartimento di Farmacia, Università 'G. D'Annunzio' Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Francesco Epifano
- Dipartimento di Farmacia, Università 'G. D'Annunzio' Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| |
Collapse
|
53
|
Dasari R, De Carvalho A, Medellin DC, Middleton KN, Hague F, Volmar MNM, Frolova LV, Rossato MF, De La Chapa JJ, Dybdal-Hargreaves NF, Pillai A, Mathieu V, Rogelj S, Gonzales CB, Calixto JB, Evidente A, Gautier M, Munirathinam G, Glass R, Burth P, Pelly SC, van Otterlo WAL, Kiss R, Kornienko A. Synthetic and Biological Studies of Sesquiterpene Polygodial: Activity of 9-Epipolygodial against Drug-Resistant Cancer Cells. ChemMedChem 2015; 10:2014-26. [PMID: 26434977 PMCID: PMC4831215 DOI: 10.1002/cmdc.201500360] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Indexed: 12/18/2022]
Abstract
Polygodial, a terpenoid dialdehyde isolated from Polygonum hydropiper L., is a known agonist of the transient receptor potential vanilloid 1 (TRPV1). In this investigation a series of polygodial analogues were prepared and investigated for TRPV1-agonist and anticancer activities. These experiments led to the identification of 9-epipolygodial, which has antiproliferative potency significantly exceeding that of polygodial. 9-Epipolygodial was found to maintain potency against apoptosis-resistant cancer cells as well as those displaying the multidrug-resistant (MDR) phenotype. In addition, the chemical feasibility for the previously proposed mechanism of action of polygodial, involving the formation of a Paal-Knorr pyrrole with a lysine residue on the target protein, was demonstrated by the synthesis of a stable polygodial pyrrole derivative. These studies reveal rich chemical and biological properties associated with polygodial and its direct derivatives. These compounds should inspire further work in this area aimed at the development of new pharmacological agents, or the exploration of novel mechanisms of covalent modification of biological molecules with natural products.
Collapse
Affiliation(s)
- Ramesh Dasari
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Annelise De Carvalho
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Derek C Medellin
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Kelsey N Middleton
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Frédéric Hague
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, 80000, Amiens, France
| | - Marie N M Volmar
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Liliya V Frolova
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM, 87801, USA
| | - Mateus F Rossato
- Center of Innovation and Preclinical Studies, Av. Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Florianópolis, SC, 88056-000, Brazil
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Jorge J De La Chapa
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Nicholas F Dybdal-Hargreaves
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Akshita Pillai
- Department of Biomedical Sciences, College of Medicine, University of Illinois, 1601 Parkview Ave., Rockford, IL, 61107, USA
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Snezna Rogelj
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM, 87801, USA
| | - Cara B Gonzales
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - João B Calixto
- Center of Innovation and Preclinical Studies, Av. Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Florianópolis, SC, 88056-000, Brazil
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, 80000, Amiens, France
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, College of Medicine, University of Illinois, 1601 Parkview Ave., Rockford, IL, 61107, USA
| | - Rainer Glass
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Patricia Burth
- Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Outeiro de São João Batista, s/n Campus do Valonguinho, Centro-Niterói, RJ, 24020-140, Brazil
| | - Stephen C Pelly
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Willem A L van Otterlo
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA.
| |
Collapse
|
54
|
Dasari R, Masi M, Lisy R, Ferdérin M, English LR, Cimmino A, Mathieu V, Brenner AJ, Kuhn JG, Whitten ST, Evidente A, Kiss R, Kornienko A. Fungal metabolite ophiobolin A as a promising anti-glioma agent: In vivo evaluation, structure-activity relationship and unique pyrrolylation of primary amines. Bioorg Med Chem Lett 2015; 25:4544-8. [PMID: 26341136 PMCID: PMC4592837 DOI: 10.1016/j.bmcl.2015.08.066] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 08/20/2015] [Accepted: 08/24/2015] [Indexed: 02/04/2023]
Abstract
Glioblastoma, the most common form of malignant primary brain tumor, is characterized by resistance to apoptosis, which is largely responsible for the low effectiveness of the classical chemotherapeutic approaches based on apoptosis induction in cancer cells. Previously, a fungal secondary metabolite ophiobolin A was found to have significant activity against apoptosis-resistant glioblastoma cells through the induction of a non-apoptotic cell death, thus, offering an innovative strategy to combat this type of cancer. The current work describes the results of a preliminary evaluation of ophiobolin A in an in vivo glioblastoma model and its chemical derivatization to establish first synthetically generated structure-activity relationship. The synthetic work has also led to the discovery of a unique reaction of ophiobolin A with primary amines suggesting the possibility of pyrrolylation of lysine residues on its intracellular target protein(s).
Collapse
Affiliation(s)
- Ramesh Dasari
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Romana Lisy
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Marlène Ferdérin
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Lance R English
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Andrew J Brenner
- Cancer Therapy and Research Center, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - John G Kuhn
- Cancer Therapy and Research Center, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Steven T Whitten
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA.
| |
Collapse
|
55
|
Dasari R, De Carvalho A, Medellin DC, Middleton KN, Hague F, Volmar MNM, Frolova LV, Rossato MF, De La Chapa JJ, Dybdal-Hargreaves NF, Pillai A, Kälin RE, Mathieu V, Rogelj S, Gonzales CB, Calixto JB, Evidente A, Gautier M, Munirathinam G, Glass R, Burth P, Pelly SC, van Otterlo WAL, Kiss R, Kornienko A. Wittig derivatization of sesquiterpenoid polygodial leads to cytostatic agents with activity against drug resistant cancer cells and capable of pyrrolylation of primary amines. Eur J Med Chem 2015; 103:226-37. [PMID: 26360047 DOI: 10.1016/j.ejmech.2015.08.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/22/2015] [Accepted: 08/24/2015] [Indexed: 12/13/2022]
Abstract
Many types of cancer, including glioma, melanoma, non-small cell lung cancer (NSCLC), among others, are resistant to proapoptotic stimuli and thus poorly responsive to current therapies based on the induction of apoptosis in cancer cells. The current investigation describes the synthesis and anticancer evaluation of unique C12-Wittig derivatives of polygodial, a sesquiterpenoid dialdehyde isolated from Persicaria hydropiper (L.) Delabre. These compounds were found to undergo an unprecedented pyrrole formation with primary amines in a chemical model system, a reaction that could be relevant in the biological environment and lead to the pyrrolation of lysine residues in the target proteins. The anticancer evaluation of these compounds revealed their promising activity against cancer cells displaying various forms of drug resistance, including resistance to proapoptotic agents. Mechanistic studies indicated that compared to the parent polygodial, which displays fixative general cytotoxic action against human cells, the C12-Wittig derivatives exerted their antiproliferative action mainly through cytostatic effects explaining their activity against apoptosis-resistant cancer cells. The possibility for an intriguing covalent modification of proteins through a novel pyrrole formation reaction, as well as useful activities against drug resistant cancer cells, make the described polygodial-derived chemical scaffold an interesting new chemotype warranting thorough investigation.
Collapse
Affiliation(s)
- Ramesh Dasari
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Annelise De Carvalho
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Derek C Medellin
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Kelsey N Middleton
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Frédéric Hague
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, Amiens, France
| | - Marie N M Volmar
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Liliya V Frolova
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA; Department of Biology, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA
| | - Mateus F Rossato
- Center of Innovation and Preclinical Studies, Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Brazil; Department of Pharmacology, UFSC, Florianópolis SC 88.056-000, Brazil
| | - Jorge J De La Chapa
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, UTHSCSA, San Antonio, TX 78229, USA
| | | | - Akshita Pillai
- Department of Biomedical Sciences, University of Illinois, College of Medicine, 1601 Parkview Ave, Rockford, IL 61107, USA
| | - Roland E Kälin
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Snezna Rogelj
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA; Department of Biology, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA
| | - Cara B Gonzales
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, UTHSCSA, San Antonio, TX 78229, USA
| | - João B Calixto
- Center of Innovation and Preclinical Studies, Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Brazil; Department of Pharmacology, UFSC, Florianópolis SC 88.056-000, Brazil
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, Amiens, France
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, University of Illinois, College of Medicine, 1601 Parkview Ave, Rockford, IL 61107, USA
| | - Rainer Glass
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Patricia Burth
- Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Outeiro de São João Batista, s/n° Campus do Valonguinho, Centro-Niterói, RJ 24020-140, Brazil
| | - Stephen C Pelly
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Willem A L van Otterlo
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA.
| |
Collapse
|
56
|
Early downregulation of Mcl-1 regulates apoptosis triggered by cardiac glycoside UNBS1450. Cell Death Dis 2015; 6:e1782. [PMID: 26068790 PMCID: PMC4669823 DOI: 10.1038/cddis.2015.134] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 04/01/2015] [Accepted: 04/21/2015] [Indexed: 01/09/2023]
Abstract
Cardiac glycosides (CGs), prescribed to treat cardiovascular alterations, display potent anti-cancer activities. Despite their well-established target, the sodium/potassium (Na+/K+)-ATPase, downstream mechanisms remain poorly elucidated. UNBS1450 is a hemi-synthetic cardenolide derived from 2″-oxovorusharin extracted from the plant Calotropis procera, which is effective against various cancer cell types with an excellent differential toxicity. By comparing adherent and non-adherent cancer cell types, we validated Mcl-1 as a general and early target of UNBS1450. A panel of CGs including cardenolides ouabain, digitoxin and digoxin as well as bufadienolides cinobufagin and proscillaridin A allowed us to generalize our findings. Our results show that Mcl-1, but not Bcl-xL nor Bcl-2, is rapidly downregulated prior to induction of apoptosis. From a mechanistic point of view, we exclude an effect on transcription and demonstrate involvement of a pathway affecting protein stability and requiring the proteasome in the early CG-induced Mcl-1 downregulation, without the involvement of caspases or the BH3-only protein NOXA. Strategies aiming at preventing UNBS1450-induced Mcl-1 downregulation by overexpression of a mutated, non-ubiquitinable form of the protein or the use of the proteasome inhibitor MG132 inhibited the compound's ability to induce apoptosis. Altogether our results point at Mcl-1 as a ubiquitous factor, downregulated by CGs, whose modulation is essential to achieve cell death.
Collapse
|
57
|
Masi M, Frolova LV, Yu X, Mathieu V, Cimmino A, De Carvalho A, Kiss R, Rogelj S, Pertsemlidis A, Kornienko A, Evidente A. Jonquailine, a new pretazettine-type alkaloid isolated from Narcissus jonquilla quail, with activity against drug-resistant cancer. Fitoterapia 2015; 102:41-8. [PMID: 25598189 PMCID: PMC4942186 DOI: 10.1016/j.fitote.2015.01.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/07/2015] [Accepted: 01/08/2015] [Indexed: 01/22/2023]
Abstract
A new alkaloid, belonging to the pretazettine group of Amaryllidaceae alkaloids, was isolated from dried bulbs of Narcissus jonquilla quail and named jonquailine. Its structure, including the absolute configuration, was elucidated using various NMR, ECD and ESI MS techniques. Initial biological evaluation revealed significant antiproliferative effects against glioblastoma, melanoma, uterine sarcoma and non-small-cell lung cancer cells displaying various forms of drug resistance, including resistance to apoptosis and multi-drug resistance. Jonquailine was also found to synergize with paclitaxel in its antiproliferative action against drug-resistant lung cancer cells. The results obtained compared with literature data also showed that the hydroxylation at C-8 is an important feature for the anticancer activity but this seems unaffected by the stereochemistry or the acetalization of the lactol.
Collapse
Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Liliya V Frolova
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA; Department of Biology, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA
| | - Xiaojie Yu
- Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, 8403 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Annelise De Carvalho
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Snezna Rogelj
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA; Department of Biology, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA
| | - Alexander Pertsemlidis
- Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, 8403 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy.
| |
Collapse
|
58
|
Strophalloside induces apoptosis of SGC-7901 cells through the mitochondrion-dependent caspase-3 pathway. Molecules 2015; 20:5714-28. [PMID: 25838173 PMCID: PMC6272525 DOI: 10.3390/molecules20045714] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/18/2015] [Accepted: 03/25/2015] [Indexed: 11/30/2022] Open
Abstract
Cardenolides with special chemical structures have been considered as effective anti-cancer drugs in clinic trials. Strophalloside is a cardenolide we recently isolated from Antiaris toxicaria obtained from Hainan, China. The aim of this study was to investigate the possible anticancer effects induced by strophalloside and the underlying molecular mechanism. Gastric carcinoma SGC-7901 cells were treated with strophalloside at various concentrations for different times, and resulting cell viability was determined by the MTT assay, and the motility and invasion of tumor cells were assessed by the Transwell chamber assay. Apoptosis were measured by Annexin V-FITC/PI and Hoechst staining. The changes of mitochondrial transmembrane potential were examined by a JC-1 kit. The expressions of pro-apoptotic protein cytochrome c, caspase-3 and caspase-9 were detected by western blotting analysis. The results showed that strophalloside was capable of reducing cell viability, inhibiting cell growth, and suppressing cell migration and invasion in a time- and dose-dependent manner. Mitochondrial membrane potential declined and the concentration of cytochrome c increased in cytoplasm and caspase-3 and caspase-9 were cleaved into activated states, suggesting that cytochrome c was released from the mitochondrion to cytoplasm and finally activated the caspase-dependent apoptosis pathway. Our results indicate that strophalloside is a potential anticancer drug.
Collapse
|
59
|
Magpusao AN, Omolloh G, Johnson J, Gascón J, Peczuh MW, Fenteany G. Cardiac glycoside activities link Na(+)/K(+) ATPase ion-transport to breast cancer cell migration via correlative SAR. ACS Chem Biol 2015; 10:561-9. [PMID: 25334087 PMCID: PMC4340362 DOI: 10.1021/cb500665r] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
![]()
The cardiac glycosides ouabain and
digitoxin, established Na+/K+ ATPase inhibitors,
were found to inhibit MDA-MB-231
breast cancer cell migration through an unbiased chemical genetics
screen for cell motility. The Na+/K+ ATPase
acts both as an ion-transporter and as a receptor for cardiac glycosides.
To delineate which function is related to breast cancer cell migration,
structure–activity relationship (SAR) profiles of cardiac glycosides
were established at the cellular (cell migration inhibition), molecular
(Na+/K+ ATPase inhibition), and atomic (computational
docking) levels. The SAR of cardiac glycosides and their analogs revealed
a similar profile, a decrease in potency when the parent cardiac glycoside
structure was modified, for each activity investigated. Since assays
were done at the cellular, molecular, and atomic levels, correlation
of SAR profiles across these multiple assays established links between
cellular activity and specific protein–small molecule interactions.
The observed antimigratory effects in breast cancer cells are directly
related to the inhibition of Na+/K+ transport.
Specifically, the orientation of cardiac glycosides at the putative
cation permeation path formed by transmembrane helices αM1–M6
correlates with the Na+ pump activity and cell migration.
Other Na+/K+ ATPase inhibitors that are structurally
distinct from cardiac glycosides also exhibit antimigratory activity,
corroborating the conclusion that the antiport function of Na+/K+ ATPase and not the receptor function is important
for supporting the motility of MDA-MB-231 breast cancer cells. Correlative
SAR can establish new relationships between specific biochemical functions
and higher-level cellular processes, particularly for proteins with
multiple functions and small molecules with unknown or various modes
of action.
Collapse
Affiliation(s)
- Anniefer N. Magpusao
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - George Omolloh
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - Joshua Johnson
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - José Gascón
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - Gabriel Fenteany
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| |
Collapse
|
60
|
Aksenov AV, Smirnov AN, Magedov IV, Reisenauer MR, Aksenov NA, Aksenova IV, Pendleton AL, Nguyen G, Johnston RK, Rubin M, De Carvalho A, Kiss R, Mathieu V, Lefranc F, Correa J, Cavazos DA, Brenner AJ, Bryan BA, Rogelj S, Kornienko A, Frolova LV. Activity of 2-aryl-2-(3-indolyl)acetohydroxamates against drug-resistant cancer cells. J Med Chem 2015; 58:2206-20. [PMID: 25671501 DOI: 10.1021/jm501518y] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Many types of tumor, including glioma, melanoma, non-small cell lung, esophageal, and head and neck cancer, among others, are intrinsically resistant to apoptosis induction and poorly responsive to current therapies with proapoptotic agents. In addition, tumors often develop multidrug resistance based on the cellular efflux of chemotherapeutic agents. Thus, novel anticancer agents capable of overcoming these intrinsic or developed tumor resistance mechanisms are urgently needed. We describe a series of 2-aryl-2-(3-indolyl)acetohydroxamic acids that are active against apoptosis- and multidrug-resistant cancer cells as well as glioblastoma neurosphere stemlike cell cultures derived from patients. Thus, the described compounds serve as a novel chemical scaffold for the development of potentially highly effective clinical cancer drugs.
Collapse
Affiliation(s)
- Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University , 1a Pushkin St., Stavropol 355009, Russian Federation
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
61
|
Garay T, Kenessey I, Molnár E, Juhász É, Réti A, László V, Rózsás A, Dobos J, Döme B, Berger W, Klepetko W, Tóvári J, Tímár J, Hegedűs B. Prenylation inhibition-induced cell death in melanoma: reduced sensitivity in BRAF mutant/PTEN wild-type melanoma cells. PLoS One 2015; 10:e0117021. [PMID: 25646931 PMCID: PMC4315579 DOI: 10.1371/journal.pone.0117021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 12/17/2014] [Indexed: 12/23/2022] Open
Abstract
While targeted therapy brought a new era in the treatment of BRAF mutant melanoma, therapeutic options for non-BRAF mutant cases are still limited. In order to explore the antitumor activity of prenylation inhibition we investigated the response to zoledronic acid treatment in thirteen human melanoma cell lines with known BRAF, NRAS and PTEN mutational status. Effect of zoledronic acid on proliferation, clonogenic potential, apoptosis and migration of melanoma cells as well as the activation of downstream elements of the RAS/RAF pathway were investigated in vitro with SRB, TUNEL and PARP cleavage assays and videomicroscopy and immunoblot measurements, respectively. Subcutaneous and spleen-to-liver colonization xenograft mouse models were used to evaluate the influence of zoledronic acid treatment on primary and disseminated tumor growth of melanoma cells in vivo. Zoledronic acid more efficiently decreased short-term in vitro viability in NRAS mutant cells when compared to BRAF mutant and BRAF/NRAS wild-type cells. In line with this finding, following treatment decreased activation of ribosomal protein S6 was found in NRAS mutant cells. Zoledronic acid demonstrated no significant synergism in cell viability inhibition or apoptosis induction with cisplatin or DTIC treatment in vitro. Importantly, zoledronic acid could inhibit clonogenic growth in the majority of melanoma cell lines except in the three BRAF mutant but PTEN wild-type melanoma lines. A similar pattern was observed in apoptosis induction experiments. In vivo zoledronic acid did not inhibit the subcutaneous growth or spleen-to-liver colonization of melanoma cells. Altogether our data demonstrates that prenylation inhibition may be a novel therapeutic approach in NRAS mutant melanoma. Nevertheless, we also demonstrated that therapeutic sensitivity might be influenced by the PTEN status of BRAF mutant melanoma cells. However, further investigations are needed to identify drugs that have appropriate pharmacological properties to efficiently target prenylation in melanoma cells.
Collapse
Affiliation(s)
- Tamás Garay
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
- National Koranyi Institute of TB and Pulmonology, Budapest, Hungary
- Department of Biological Physics, Eötvös University, Budapest, Hungary
| | - István Kenessey
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Eszter Molnár
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Éva Juhász
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Andrea Réti
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Viktória László
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Anita Rózsás
- National Koranyi Institute of TB and Pulmonology, Budapest, Hungary
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Judit Dobos
- Department of Experimental Pharmacology, National Institute of Oncology, Budapest, Hungary
| | - Balázs Döme
- National Koranyi Institute of TB and Pulmonology, Budapest, Hungary
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- Department of Thoracic Surgery, Semmelweis University-National Institute of Oncology, Budapest, Hungary
| | - Walter Berger
- Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Walter Klepetko
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - József Tóvári
- Department of Experimental Pharmacology, National Institute of Oncology, Budapest, Hungary
| | - József Tímár
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
- MTA-SE Molecular Oncology Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Balázs Hegedűs
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- MTA-SE Molecular Oncology Research Group, Hungarian Academy of Sciences, Budapest, Hungary
- * E-mail:
| |
Collapse
|
62
|
Resnier P, LeQuinio P, Lautram N, André E, Gaillard C, Bastiat G, Benoit JP, Passirani C. Efficient in vitro gene therapy with PEG siRNA lipid nanocapsules for passive targeting strategy in melanoma. Biotechnol J 2014; 9:1389-401. [PMID: 25262914 DOI: 10.1002/biot.201400162] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 07/28/2014] [Accepted: 09/18/2014] [Indexed: 12/30/2022]
Abstract
Small interfering RNA (siRNA)-mediated gene therapy is a promising strategy to temporarily inhibit the expression of proteins implicated in carcinogenesis or chemotherapy resistance. Although intra-tumoral administration can be envisaged, studies currently focus on formulating nanomedicines for intravenous injection to target tumor sites as well as metastases. The development of synthetic nanoparticles and liposomes has advanced greatly during the last decade. The objective of this work consists in formulating and optimizing the encapsulation of siRNA into lipid nanocapsules (LNCs) for efficient gene therapy to target melanoma cells. SiRNA LNCs were prepared from DOTAP/DOPE lipoplexes, and the siRNA amount and lipid/siRNA charge ratio were assayed to improve the stability and the encapsulation yield. Cryo-TEM imaging of the siRNA lipoplexes and LNC morphology revealed specific organization of the siRNA DOTAP/DOPE lipoplexes as well as specific lipid microstructures that can be eliminated by purification. No cytotoxicity of the siRNA LNCs against the melanoma SK-Mel28 cell line was observed at concentrations of up to 500 ng/mL siRNA. In vitro siRNA transfection experiments, compared to Oligofectamine™, demonstrated interesting targeted gene silencing effects. Finally, complement activation assays confirmed the feasibility of the PEGylation of siRNA LNCs as part of a passive targeting strategy for future in vivo melanoma- and metastasis-targeting experiments.
Collapse
Affiliation(s)
- Pauline Resnier
- PRES LUNAM, Universit é d'Angers, Angers, France; INSERM, Micro et Nanomédecines Biomimétiques, Angers, France
| | | | | | | | | | | | | | | |
Collapse
|
63
|
Mollica A, Costante R, Fiorito S, Genovese S, Stefanucci A, Mathieu V, Kiss R, Epifano F. Synthesis and anti-cancer activity of naturally occurring 2,5-diketopiperazines. Fitoterapia 2014; 98:91-7. [PMID: 25064216 DOI: 10.1016/j.fitote.2014.07.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/09/2014] [Accepted: 07/10/2014] [Indexed: 11/28/2022]
Abstract
Three naturally occurring oxyprenylated diketopiperazines were synthesized and preliminarily tested as growth inhibitory agents in vitro against various cancer cell lines. The compounds were tested on six human cancer cell lines with different sensitivity to proapoptotic stimuli using the MTT colorimetric assay. The data revealed that of the chemicals under study only deoxymicelianamide (11) displayed the highest activity, recording mean IC50 growth inhibitory values ranging from 2 to 23 μM. A comparative study with the non-geranylated saturated derivative of (11) revealed the importance of the presence of the geranyloxy side chain and the exocyclic 2,5-DPK double bond moiety for the observed activity.
Collapse
Affiliation(s)
- Adriano Mollica
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy.
| | - Roberto Costante
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Serena Fiorito
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Salvatore Genovese
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Azzurra Stefanucci
- Department of Chemistry, "Sapienza" Università di Roma, P. le A. Moro, 5, 00187 Rome, Italy
| | - Veronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Francesco Epifano
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| |
Collapse
|
64
|
Scott R, Karki M, Reisenauer MR, Rodrigues R, Dasari R, Smith WR, Pelly SC, van Otterlo WAL, Shuster CB, Rogelj S, Magedov IV, Frolova LV, Kornienko A. Synthetic and biological studies of tubulin targeting c2-substituted 7-deazahypoxanthines derived from marine alkaloid rigidins. ChemMedChem 2014; 9:1428-1435. [PMID: 24644272 PMCID: PMC4945961 DOI: 10.1002/cmdc.201300532] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Indexed: 11/09/2022]
Abstract
C2-aryl- and C2-alkyl-7-deazahypoxanthines as analogues of marine alkaloid rigidins were prepared utilizing novel synthetic methods developed for the construction of the pyrrolo[2,3-d]pyrimidine ring system. The new compounds exhibited sub-micromolar to nanomolar antiproliferative potencies against a panel of cell lines including in vitro models for drug-resistant tumors, such as glioblastoma, melanoma and non-small-cell lung cancer. A selected representative C2-methyl-7-deazahypoxanthine was found to inhibit microtubule dynamics in cancer cells, lending evidence for tubulin targeting as a mode of action for these compounds in cancer cells. The results of the docking studies utilizing the colchicine site on β-tubulin were consistent with the observed structure-activity relationship data, including an important finding that derivatization at C2 with linear alkyl groups leads to the retention of activity, thus permitting the attachment of a biotin-containing linker for the subsequent proteomics assays. Because many microtubule-targeting compounds are successfully used to fight cancer in the clinic, the reported antitubulin rigidin analogues have significant potential as new anticancer agents.
Collapse
Affiliation(s)
- Robert Scott
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Menuka Karki
- Department of Biology, New Mexico State University, Las Cruces, NM 88003, USA
| | - Mary R. Reisenauer
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
| | - Roberta Rodrigues
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Ramesh Dasari
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - W. Ross Smith
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Stephen C. Pelly
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Willem A. L. van Otterlo
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Charles B. Shuster
- Department of Biology, New Mexico State University, Las Cruces, NM 88003, USA
| | - Snezna Rogelj
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
| | - Igor V. Magedov
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
| | - Liliya V. Frolova
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| |
Collapse
|
65
|
Evaluating the cancer therapeutic potential of cardiac glycosides. BIOMED RESEARCH INTERNATIONAL 2014; 2014:794930. [PMID: 24895612 PMCID: PMC4033509 DOI: 10.1155/2014/794930] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/25/2014] [Accepted: 04/28/2014] [Indexed: 11/23/2022]
Abstract
Cardiac glycosides, also known as cardiotonic steroids, are a group of natural products that share a steroid-like structure with an unsaturated lactone ring and the ability to induce cardiotonic effects mediated by a selective inhibition of the Na+/K+-ATPase. Cardiac glycosides have been used for many years in the treatment of cardiac congestion and some types of cardiac arrhythmias. Recent data suggest that cardiac glycosides may also be useful in the treatment of cancer. These compounds typically inhibit cancer cell proliferation at nanomolar concentrations, and recent high-throughput screenings of drug libraries have therefore identified cardiac glycosides as potent inhibitors of cancer cell growth. Cardiac glycosides can also block tumor growth in rodent models, which further supports the idea that they have potential for cancer therapy. Evidence also suggests, however, that cardiac glycosides may not inhibit cancer cell proliferation selectively and the potent inhibition of tumor growth induced by cardiac glycosides in mice xenografted with human cancer cells is probably an experimental artifact caused by their ability to selectively kill human cells versus rodent cells. This paper reviews such evidence and discusses experimental approaches that could be used to reveal the cancer therapeutic potential of cardiac glycosides in preclinical studies.
Collapse
|
66
|
C1,C2-ether derivatives of the Amaryllidaceae alkaloid lycorine: retention of activity of highly lipophilic analogues against cancer cells. Bioorg Med Chem Lett 2013; 24:923-7. [PMID: 24393582 DOI: 10.1016/j.bmcl.2013.12.073] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 12/16/2013] [Accepted: 12/17/2013] [Indexed: 11/21/2022]
Abstract
As a continuation of the studies aimed at the development of new anticancer agents derived from the Amaryllidaceae alkaloid lycorine, 35 C1,C2-ether analogues of this natural product were synthesized. The compounds were evaluated for antiproliferative activities in vitro in a panel of tumor cell lines with varied levels of apoptosis resistance. A strong correlation between the compound lipophilicity and anticancer activity was observed, indicating that cell permeability properties must be an important determinant in the design of lycorine-based anticancer agents. A theoretical docking model, consistent with the experimental observations, is presented.
Collapse
|
67
|
Growth inhibitory activity for cancer cell lines of lapachol and its natural and semi-synthetic derivatives. Bioorg Med Chem Lett 2013; 24:454-7. [PMID: 24374273 DOI: 10.1016/j.bmcl.2013.12.049] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 12/10/2013] [Accepted: 12/11/2013] [Indexed: 11/23/2022]
Abstract
A series of 17 selected natural and semisynthetic 1,4-naphthoquinones were synthesized, and their growth inhibitory activity was evaluated in vitro. The compounds were tested on six human cancer cell lines using the MTT colorimetric assay. The data revealed that of the chemicals under study only lapachol, its acetate and 3-geranyllawsone displayed the highest activity, recording mean IC50 values ranging from 15 to 22 μM.
Collapse
|
68
|
Stock C, Ludwig FT, Hanley PJ, Schwab A. Roles of ion transport in control of cell motility. Compr Physiol 2013; 3:59-119. [PMID: 23720281 DOI: 10.1002/cphy.c110056] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cell motility is an essential feature of life. It is essential for reproduction, propagation, embryonic development, and healing processes such as wound closure and a successful immune defense. If out of control, cell motility can become life-threatening as, for example, in metastasis or autoimmune diseases. Regardless of whether ciliary/flagellar or amoeboid movement, controlled motility always requires a concerted action of ion channels and transporters, cytoskeletal elements, and signaling cascades. Ion transport across the plasma membrane contributes to cell motility by affecting the membrane potential and voltage-sensitive ion channels, by inducing local volume changes with the help of aquaporins and by modulating cytosolic Ca(2+) and H(+) concentrations. Voltage-sensitive ion channels serve as voltage detectors in electric fields thus enabling galvanotaxis; local swelling facilitates the outgrowth of protrusions at the leading edge while local shrinkage accompanies the retraction of the cell rear; the cytosolic Ca(2+) concentration exerts its main effect on cytoskeletal dynamics via motor proteins such as myosin or dynein; and both, the intracellular and the extracellular H(+) concentration modulate cell migration and adhesion by tuning the activity of enzymes and signaling molecules in the cytosol as well as the activation state of adhesion molecules at the cell surface. In addition to the actual process of ion transport, both, channels and transporters contribute to cell migration by being part of focal adhesion complexes and/or physically interacting with components of the cytoskeleton. The present article provides an overview of how the numerous ion-transport mechanisms contribute to the various modes of cell motility.
Collapse
Affiliation(s)
- Christian Stock
- Institute of Physiology II, University of Münster, Münster, Germany.
| | | | | | | |
Collapse
|
69
|
Hellebrin and its aglycone form hellebrigenin display similar in vitro growth inhibitory effects in cancer cells and binding profiles to the alpha subunits of the Na+/K+-ATPase. Mol Cancer 2013; 12:33. [PMID: 23621895 PMCID: PMC3722118 DOI: 10.1186/1476-4598-12-33] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2012] [Accepted: 04/17/2013] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Surface-expressed Na+/K+-ATPase (NaK) has been suggested to function as a non-canonical cardiotonic steroid-binding receptor that activates multiple signaling cascades, especially in cancer cells. By contrast, the current study establishes a clear correlation between the IC50in vitro growth inhibitory concentration in human cancer cells and the Ki for the inhibition of activity of purified human α1β1 NaK. METHODS The in vitro growth inhibitory effects of seven cardiac glycosides including five cardenolides (ouabain, digoxin, digitoxin, gitoxin, uzarigenin-rhamnoside, and their respective aglycone forms) and two bufadienolides (gamabufotalin-rhamnoside and hellebrin, and their respective aglycone forms) were determined by means of the MTT colorimetric assay and hellebrigenin-induced cytotoxic effects were visualized by means of quantitative videomicroscopy. The binding affinity of ten of the 14 compounds under study was determined with respect to human α1β1, α2β1 and α3β1 NaK complexes. Lactate releases and oxygen consumption rates were also determined in cancer cells treated with these various cardiac glycosides. RESULTS Although cardiotonic steroid aglycones usually display weaker binding affinity and in vitro anticancer activity than the corresponding glycoside, the current study demonstrates that the hellebrin / hellebrigenin pair is at odds with respect to this rule. In addition, while some cardiac steroid glycosides (e.g., digoxin), but not the aglycones, display a higher binding affinity for the α2β1 and α3β1 than for the α1β1 complex, both hellebrin and its aglycone hellebrigenin display ~2-fold higher binding affinity for α1β1 than for the α2β1 and α3β1 complexes. Finally, the current study highlights a common feature for all cardiotonic steroids analyzed here, namely a dramatic reduction in the oxygen consumption rate in cardenolide- and bufadienolide-treated cells, reflecting a direct impact on mitochondrial oxidative phosphorylation. CONCLUSIONS Altogether, these data show that the binding affinity of the bufadienolides and cardenolides under study is usually higher for the α2β1 and α3β1 than for the α1β1 NaK complex, excepted for hellebrin and its aglycone form, hellebrigenin, with hellebrigenin being as potent as hellebrin in inhibiting in vitro cancer cell growth.
Collapse
|
70
|
Magedov IV, Lefranc F, Frolova LV, Banuls LMY, Peretti AS, Rogelj S, Mathieu V, Kiss R, Kornienko A. Antiproliferative activity of 2,3-disubstituted indoles toward apoptosis-resistant cancers cells. Bioorg Med Chem Lett 2013; 23:3277-82. [PMID: 23622980 DOI: 10.1016/j.bmcl.2013.03.110] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 03/26/2013] [Accepted: 03/27/2013] [Indexed: 11/18/2022]
Abstract
Many types of cancer, including glioma, melanoma, NSCLC, among others, are resistant to apoptosis induction and poorly responsive to current therapies with propaptotic agents. We describe a series of 2,3-disubstituted indoles, which display cytostatic rather than cytotoxic effects in cancer cells, and serve as a new chemical scaffold to develop anticancer agents capable of combating apoptosis-resistant cancers associated with dismal prognoses.
Collapse
Affiliation(s)
- Igor V Magedov
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
71
|
4-Bromo-2-(piperidin-1-yl)thiazol-5-yl-phenyl methanone (12b) inhibits Na+/K(+)-ATPase and Ras oncogene activity in cancer cells. Eur J Med Chem 2013; 63:213-23. [PMID: 23474907 DOI: 10.1016/j.ejmech.2013.01.046] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 01/16/2013] [Accepted: 01/22/2013] [Indexed: 11/23/2022]
Abstract
The in vitro growth inhibitory activity of 26 thiazoles (including 4-halogeno-2,5-disubtituted-1,3-thiazoles) and 5 thienothiazoles was assessed on a panel of 6 human cancer cell lines, including glioma cell lines. (4-Chloro-2-(piperidin-1-yl)thiazol-5-yl)(phenyl)methanone (12a) and (4-bromo-2-(piperidin-1-yl)thiazol-5-yl)(phenyl)methanone (12b) displayed ~10 times greater in vitro growth inhibitory activity than perillyl alcohol (POH), which therapeutically benefits glioma patients through the inhibition of both alpha-1 Na(+)/K(+)-ATPase (NAK) and Ras oncogene activity. The in vitro cytostatic activities (as revealed by quantitative videomicroscopy) displayed by 12a and 12b were independent of the intrinsic resistance to pro-apoptotic stimuli associated with cancer cells. Compounds 12a and 12b displayed relatively similar inhibitory activities on purified guinea pig brain preparations that mainly express NAK alpha-2 and alpha-3 subunits, whereas only compound 12b was efficacious against purified guinea pig kidney preparations that mainly express the NAK alpha-1 subunit, which is also expressed in gliomas, melanomas and non-small-cell lung cancers NSCLCs.
Collapse
|
72
|
Lamoral-Theys D, Wauthoz N, Heffeter P, Mathieu V, Jungwirth U, Lefranc F, Nève J, Dubois J, Dufrasne F, Amighi K, Berger W, Gailly P, Kiss R. Trivanillic polyphenols with anticancer cytostatic effects through the targeting of multiple kinases and intracellular Ca2+ release. J Cell Mol Med 2012; 16:1421-34. [PMID: 21810170 PMCID: PMC3823212 DOI: 10.1111/j.1582-4934.2011.01403.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Cancer cells exhibit de-regulation of multiple cellular signalling pathways and treatments of various types of cancers with polyphenols are promising. We recently reported the synthesis of a series of 33 novel divanillic and trivanillic polyphenols that displayed anticancer activity, at least in vitro, through inhibiting various kinases. This study revealed that minor chemical modifications of a trivanillate scaffold could convert cytotoxic compounds into cytostatic ones. Compound 13c, a tri-chloro derivative of trivanillic ester, displayed marked inhibitory activities against FGF-, VEGF-, EGF- and Src-related kinases, all of which are implicated not only in angiogenesis but also in the biological aggressiveness of various cancer types. The pan-anti-kinase activity of 13c occurs at less than one-tenth of its mean IC50in vitro growth inhibitory concentrations towards a panel of 12 cancer cell lines. Of the 26 kinases for which 13c inhibited their activity by >75%, eight (Yes, Fyn, FGF-R1, EGFR, Btk, Mink, Ret and Itk) are implicated in control of the actin cytoskeleton organization to varying degrees. Compound 13c accordingly impaired the typical organization of the actin cytoskeleton in human U373 glioblastoma cells. The pan-anti-kinase activity and actin cytoskeleton organization impairment provoked by 13c concomitantly occurs with calcium homeostasis impairment but without provoking MDR phenotype activation. All of these anticancer properties enabled 13c to confer therapeutic benefits in vivo in a mouse melanoma pseudometastatic lung model. These data argue in favour of further chemically modifying trivanillates to produce novel and potent anticancer drugs.
Collapse
Affiliation(s)
- Delphine Lamoral-Theys
- Laboratoire de Chimie BioAnalytique, Toxicologie et Chimie Physique Appliquée, Brussels, Belgium
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
73
|
Mbosso EJT, Nguedia JCA, Meyer F, Lenta BN, Ngouela S, Lallemand B, Mathieu V, Antwerpen PV, Njunda AL, Adiogo D, Tsamo E, Looze Y, Kiss R, Wintjens R. Ceramide, cerebroside and triterpenoid saponin from the bark of aerial roots of Ficus elastica (Moraceae). PHYTOCHEMISTRY 2012; 83:95-103. [PMID: 22963707 DOI: 10.1016/j.phytochem.2012.07.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 07/11/2012] [Accepted: 07/12/2012] [Indexed: 06/01/2023]
Abstract
Three compounds, ficusamide (1), ficusoside (2) and elasticoside (3), were isolated from the bark of aerial roots of Ficus elastica (Moraceae), together with nine known compounds, including four triterpenes, three steroids and two aliphatic linear alcohols. The chemical structures of the three compounds were established by extensive 1D and 2D NMR spectroscopy, mass spectrometry and by comparison with published data. The growth inhibitory effect of the crude extract and isolated compounds was evaluated against several microorganisms and fungi. The cytotoxicity against human cancer cell lines was also assessed. Ficusamide (1) displayed a moderate in vitro growth inhibitory activity against the human A549 lung cancer cell line and a strong activity against Staphylococcus saprophyticus, while elasticoside (3) showed a potent activity on Enterococcus faecalis.
Collapse
Affiliation(s)
- Emmanuel Jean Teinkela Mbosso
- Laboratory of Biopolymers and Supramolecular Nanomaterials, Faculté de Pharmacie, Université Libre de Bruxelles-ULB, Campus Plaine-CP 206/4, Boulevard du Triomphe, B-1050 Brussels, Belgium.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
74
|
Deslandes S, Lamoral-Theys D, Frongia C, Chassaing S, Bruyère C, Lozach O, Meijer L, Ducommun B, Kiss R, Delfourne E. Synthesis and biological evaluation of analogs of the marine alkaloids granulatimide and isogranulatimide. Eur J Med Chem 2012; 54:626-36. [DOI: 10.1016/j.ejmech.2012.06.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 06/04/2012] [Accepted: 06/07/2012] [Indexed: 10/28/2022]
|
75
|
Frédérick R, Bruyère C, Vancraeynest C, Reniers J, Meinguet C, Pochet L, Backlund A, Masereel B, Kiss R, Wouters J. Novel trisubstituted harmine derivatives with original in vitro anticancer activity. J Med Chem 2012; 55:6489-501. [PMID: 22770529 DOI: 10.1021/jm300542e] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
To overcome the intrinsic resistance of cancer cells to apoptotic stimuli, we designed and synthesized approximately 50 novel β-carbolines structurally related to harmine. Harmine is known for its anticancer properties and is a DYRK1A inhibitor. Of the synthesized compounds, the most active in terms of growth inhibition of five cancer cell lines are cytostatic and approximately 100 times more potent than harmine but demonstrated no DYRK1A inhibitory activity. These novel β-carbolines display similar growth inhibitory activity in cancer cells that are sensitive and resistant to apoptotic stimuli. Using ChemGPS-NP, we found that the more active β-carbolines are all more lipophilic and larger than the less active compounds. Lastly, on the basis of the NCI human tumor cell line anticancer drug screen and the NCI COMPARE algorithm, it appears that some of these compounds, including 5a and 5k, seem to act as protein synthesis inhibitors.
Collapse
Affiliation(s)
- Raphaël Frédérick
- Namur Medicine and Drug Innovation Center (NAMEDIC-NARILIS), University of Namur (FUNDP), 61, Rue de Bruxelles, 5000 Namur, Belgium.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
76
|
|
77
|
Abstract
The sodium pump, Na+/K+-ATPase, could be an important target for the development of anticancer drugs as it serves as a versatile signal transducer, plays a key role in cell adhesion and has abnormal expression and activity that are implicated in the development and progression of different cancers. Several publications have reported differing expression of Na+/K+-ATPase α- and β-subunits in malignant tissues compared with their normal tissue counterparts, thus offering a powerful diagnostic tool. A growing number of patent applications claim the invention or discovery of Na+/K+-ATPase inhibitors (e.g., cardiac glycosides) to be used to effectively treat certain cancers that are refractory to conventional chemotherapy or radiotherapy. The aims of this review are to provide an overview of the most significant patents that highlight Na+/K+-ATPase as a valuable target in anticancer therapy and which report on novel Na+/K+-ATPase inhibitors and ligands designed as potential anticancer agents.
Collapse
|
78
|
Evdokimov NM, Lamoral-Theys D, Mathieu V, Andolfi A, Frolova LV, Pelly SC, van Otterlo WAL, Magedov IV, Kiss R, Evidente A, Kornienko A. In search of a cytostatic agent derived from the alkaloid lycorine: synthesis and growth inhibitory properties of lycorine derivatives. Bioorg Med Chem 2011; 19:7252-61. [PMID: 22019045 PMCID: PMC3383042 DOI: 10.1016/j.bmc.2011.09.051] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Revised: 08/27/2011] [Accepted: 09/06/2011] [Indexed: 01/10/2023]
Abstract
As a continuation of our studies aimed at the development of a new cytostatic agent derived from an Amaryllidaceae alkaloid lycorine, we synthesized 32 analogues of this natural product. This set of synthetic analogues included compounds incorporating selective derivatization of the C1 versus C2 hydroxyl groups, aromatized ring C, lactamized N6 nitrogen, dihydroxylated C3-C3a olefin functionality, transposed olefin from C3-C3a to C2-C3 or C3a-C4, and C1 long-chain fatty esters. All synthesized compounds were evaluated for antiproliferative activities in vitro in a panel of tumor cell lines including those exhibiting resistance to proapoptotic stimuli and representing solid cancers associated with dismal prognoses, such as melanoma, glioblastoma, and non-small-cell lung cancer. Most active analogues were not discriminatory between cancer cells displaying resistance or sensitivity to apoptosis, indicating that these compounds are thus able to overcome the intrinsic resistance of cancer cells to pro-apoptotic stimuli. 1,2-Di-O-allyllycorine was identified as a lycorine analogue, which is 100 times more potent against a U373 human glioblastoma model than the parent natural product. Furthermore, a number of synthetic analogues were identified as promising for the forthcoming in vivo studies.
Collapse
Affiliation(s)
- Nikolai M. Evdokimov
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Delphine Lamoral-Theys
- Laboratoire de Chimie Analytique, Toxicologie et Chimie Physique Appliquée and Université Libre de Bruxelles, Brussels, Belgium
| | - Véronique Mathieu
- Laboratoire de Toxicologie, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Anna Andolfi
- Dipartimento di Scienze, del Suolo, della Pianta, dell'Ambiente e delle Produzioni Animali, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Liliya V. Frolova
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Stephen C. Pelly
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Willem A. L. van Otterlo
- Department of Chemistry and Polymer Sciences, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Igor V. Magedov
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| | - Robert Kiss
- Laboratoire de Toxicologie, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Antonio Evidente
- Dipartimento di Scienze, del Suolo, della Pianta, dell'Ambiente e delle Produzioni Animali, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
| |
Collapse
|
79
|
Lamoral-Theys D, Fattorusso E, Mangoni A, Perinu C, Kiss R, Costantino V. Evaluation of the antiproliferative activity of diterpene isonitriles from the sponge Pseudoaxinella flava in apoptosis-sensitive and apoptosis-resistant cancer cell lines. JOURNAL OF NATURAL PRODUCTS 2011; 74:2299-2303. [PMID: 21985105 DOI: 10.1021/np2005055] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
One new (1) and three known (2-4) isonitrile diterpenes, isolated from the Caribbean sponge Pseudoaxinella flava, were assayed in human cancer cell lines in vitro using an MTT colorimetric assay and quantitative videomicroscopy. Compounds 1-4 displayed activity for human PC3 prostate apoptosis-sensitive cancer cell lines. Compounds 3 and 4 demonstrated similar growth inhibitory effects for three apoptosis-sensitive and three apoptosis-resistant cancer cell lines. Quantitative videomicroscopy analysis revealed that compounds 1 and 2 exerted their activity through cytotoxic effects, and compounds 3 and 4 through cytostatic effects. These results identify marine diterpene isonitriles as potential lead compounds for anticancer drug discovery.
Collapse
Affiliation(s)
- Delphine Lamoral-Theys
- The NeaNAT Group, Dipartimento di Chimica delle Sostanze Naturali, Università degli Studi di Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | | | | | | | | | | |
Collapse
|
80
|
Lallemand B, Chaix F, Bury M, Bruyère C, Ghostin J, Becker JP, Delporte C, Gelbcke M, Mathieu V, Dubois J, Prévost M, Jabin I, Kiss R. N-(2-{3-[3,5-Bis(trifluoromethyl)phenyl]ureido}ethyl)-glycyrrhetinamide (6b): A Novel Anticancer Glycyrrhetinic Acid Derivative that Targets the Proteasome and Displays Anti-Kinase Activity. J Med Chem 2011; 54:6501-13. [DOI: 10.1021/jm200285z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Benjamin Lallemand
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Fabien Chaix
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Marina Bury
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Céline Bruyère
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Jean Ghostin
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Jean-Paul Becker
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Cédric Delporte
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Michel Gelbcke
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Véronique Mathieu
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Jacques Dubois
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Martine Prévost
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Ivan Jabin
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| | - Robert Kiss
- Laboratoire de Chimie Bioanalytique, Toxicologie et Chimie Physique Appliquée, ‡Laboratoire de Toxicologie, and #Laboratoire de Chimie Pharmaceutique Organique, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), and §Laboratoire de Chimie Organique and ⊥Laboratoire de Structure et Fonction des Membranes Biologiques, Faculté des Sciences, ULB, Brussels, Belgium
| |
Collapse
|
81
|
Bruyère C, Genovese S, Lallemand B, Ionescu-Motatu A, Curini M, Kiss R, Epifano F. Growth inhibitory activities of oxyprenylated and non-prenylated naturally occurring phenylpropanoids in cancer cell lines. Bioorg Med Chem Lett 2011; 21:4174-9. [DOI: 10.1016/j.bmcl.2011.05.089] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 05/22/2011] [Accepted: 05/24/2011] [Indexed: 12/26/2022]
|
82
|
Le Calvé B, Lallemand B, Perrone C, Lenglet G, Depauw S, Van Goietsenoven G, Bury M, Vurro M, Herphelin F, Andolfi A, Zonno MC, Mathieu V, Dufrasne F, Van Antwerpen P, Poumay Y, David-Cordonnier MH, Evidente A, Kiss R. In vitro anticancer activity, toxicity and structure-activity relationships of phyllostictine A, a natural oxazatricycloalkenone produced by the fungus Phyllosticta cirsii. Toxicol Appl Pharmacol 2011; 254:8-17. [PMID: 21504755 DOI: 10.1016/j.taap.2011.03.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 03/14/2011] [Accepted: 03/31/2011] [Indexed: 10/18/2022]
Abstract
The in vitro anticancer activity and toxicity of phyllostictine A, a novel oxazatricycloalkenone recently isolated from a plant-pathogenic fungus (Phyllosticta cirsii) was characterized in six normal and five cancer cell lines. Phyllostictine A displays in vitro growth-inhibitory activity both in normal and cancer cells without actual bioselectivity, while proliferating cells appear significantly more sensitive to phyllostictine A than non-proliferating ones. The main mechanism of action by which phyllostictine displays cytotoxic effects in cancer cells does not seem to relate to a direct activation of apoptosis. In the same manner, phyllostictine A seems not to bind or bond with DNA as part of its mechanism of action. In contrast, phyllostictine A strongly reacts with GSH, which is a bionucleophile. The experimental data from the present study are in favor of a bonding process between GSH and phyllostictine A to form a complex though Michael attack at C=C bond at the acrylamide-like system. Considering the data obtained, two new hemisynthesized phyllostictine A derivatives together with three other natural phyllostictines (B, C and D) were also tested in vitro in five cancer cell lines. Compared to phyllostictine A, the two derivatives displayed a higher, phyllostictines B and D a lower, and phyllostictine C an almost equal, growth-inhibitory activity, respectively. These results led us to propose preliminary conclusions in terms of the structure-activity relationship (SAR) analyses for the anticancer activity of phyllostictine A and its related compounds, at least in vitro.
Collapse
Affiliation(s)
- Benjamin Le Calvé
- Laboratoire de Toxicologie, Faculté de Pharmacie de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
83
|
Panza E, Tersigni M, Iorizzi M, Zollo F, De Marino S, Festa C, Napolitano M, Castello G, Ialenti A, Ianaro A. Lauroside B, a megastigmane glycoside from Laurus nobilis (bay laurel) leaves, induces apoptosis in human melanoma cell lines by inhibiting NF-κB activation. JOURNAL OF NATURAL PRODUCTS 2011; 74:228-33. [PMID: 21188975 DOI: 10.1021/np100688g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Malignant melanoma is a highly aggressive tumor that frequently resists chemotherapy, so the search for new agents for its treatment is of great importance. In the present study, the antiproliferative propensity against human melanoma cell lines of lauroside B (1), a megastigmane glycoside isolated from Laurus nobilis (bay laurel) leaves, was investigated. This compound suppressed the proliferation of three human melanoma cell lines, namely, A375, WM115, and SK-Mel-28. The 1-induced inhibition of human melanoma cell proliferation was due to the induction of apoptosis, as demonstrated by FACS analysis with annexin V/PI staining and confirmed by activation of caspase-3 and by the cleavage of poly(ADP-ribose) polymerase (PARP). Growing evidence implicates NF-κB as an important contributor to metastasis and increased chemoresistance of melanoma. Thus, it was hypothesized that 1-induced apoptosis could be associated with suppression of NF-κB activation. The results showed that exposure of human melanoma cells to 1 inhibited IκB-α degradation and constitutive NF-κB DNA-binding activity as well as the expression, regulated by NF-κB, of two antiapoptotic genes, XIAP and c-FLIP. Induction of apoptosis by 1 in human aggressive melanoma cell lines has a potential high biological value.
Collapse
Affiliation(s)
- Elisabetta Panza
- Department of Experimental Pharmacology, University of Naples Federico II, Naples, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
84
|
Van Goietsenoven G, Andolfi A, Lallemand B, Cimmino A, Lamoral-Theys D, Gras T, Abou-Donia A, Dubois J, Lefranc F, Mathieu V, Kornienko A, Kiss R, Evidente A. Amaryllidaceae alkaloids belonging to different structural subgroups display activity against apoptosis-resistant cancer cells. JOURNAL OF NATURAL PRODUCTS 2010; 73:1223-7. [PMID: 20550100 DOI: 10.1021/np9008255] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Fifteen Amaryllidaceae alkaloids (1-15) were evaluated for their antiproliferative activities against six distinct cancer cell lines. Several of these natural products were found to have low micromolar antiproliferative potencies. The log P values of these compounds did not influence their observed activity. When active, the compounds displayed cytostatic, not cytotoxic activity, with the exception of pseudolycorine (3), which exhibited cytotoxic profiles. The active compounds showed similar efficacies toward cancer cells irrespective of whether the cell lines were responsive or resistant to proapoptotic stimuli. Altogether, the data from the present study revealed that lycorine (1), amarbellisine (6), haemanthamine (14), and haemanthidine (15) are potentially useful chemical scaffolds to generate further compounds to combat cancers associated with poor prognoses, especially those naturally resistant to apoptosis, such as glioblastoma, melanoma, non-small-cell lung, and metastatic cancers.
Collapse
Affiliation(s)
- Gwendoline Van Goietsenoven
- Laboratoire de Toxicologie and Laboratoire de Chimie Analytique, Toxicologie et Chimie Physique Appliquee, Institut de Pharmacie, Universite Libre de Bruxelles, Brussels, Belgium
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
85
|
Gasper R, Mijatovic T, Bénard A, Derenne A, Kiss R, Goormaghtigh E. FTIR spectral signature of the effect of cardiotonic steroids with antitumoral properties on a prostate cancer cell line. Biochim Biophys Acta Mol Basis Dis 2010; 1802:1087-94. [PMID: 20656024 DOI: 10.1016/j.bbadis.2010.07.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 07/15/2010] [Accepted: 07/15/2010] [Indexed: 01/17/2023]
Abstract
We show in the present work that the infrared (IR) spectrum of human PC-3 prostate cancer cells exposed to anticancer drugs could offer a unique opportunity to get a fingerprint of all the major biochemical components (DNA, RNA, proteins, lipids, etc.) present in the cells and to identify with high sensitivity the signature of the metabolic changes induced by anticancer drugs. We investigated here the FTIR-related signatures of the effect of 4 structurally-related cardiotonic steroids (CS), i.e. ouabain, 19-hydroxy-2″-oxovoruscharin, hellebrin and 19-hydroxy-hellebrin on PC-3 cancer cells incubated between 0 and 36 h in the absence (control) or the presence of the CS. For each molecule a single spectral signature described the largest part of the time dependent modifications with a possible very minor second component. The spectral signatures characterizing the effects of each of the four CS were unique but very similar when compared to the signature of the effect of an intercalating anticancer drug, i.e. doxorubicin, selected as a positive reference compound in our study, suggesting a fully distinct set of cellular perturbations. The current study thus illustrates that Fourier Transform Infrared (FTIR) analyses can be used to identify, among the perturbations induced on a given cancer cell line, the features common to a group of anticancer compounds as well as features specific to every single drug.
Collapse
Affiliation(s)
- Régis Gasper
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics, Université Libre de Bruxelles (ULB), Belgium
| | | | | | | | | | | |
Collapse
|
86
|
Van Goietsenoven G, Hutton J, Becker JP, Lallemand B, Robert F, Lefranc F, Pirker C, Vandenbussche G, Van Antwerpen P, Evidente A, Berger W, Prévost M, Pelletier J, Kiss R, Kinzy TG, Kornienko A, Mathieu V. Targeting of eEF1A with Amaryllidaceae isocarbostyrils as a strategy to combat melanomas. FASEB J 2010; 24:4575-84. [PMID: 20643906 DOI: 10.1096/fj.10-162263] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Melanomas display poor response rates to adjuvant therapies because of their intrinsic resistance to proapoptotic stimuli. This study indicates that such resistance can be overcome, at least partly, through the targeting of eEF1A elongation factor with narciclasine, an Amaryllidaceae isocarbostyril controlling plant growth. Narciclasine displays IC(50) growth inhibitory values between 30-100 nM in melanoma cell lines, irrespective of their levels of resistance to proapoptotic stimuli. Normal noncancerous cell lines are much less affected. At nontoxic doses, narciclasine also significantly improves (P=0.004) the survival of mice bearing metastatic apoptosis-resistant melanoma xenografts in their brain. The eEF1A targeting with narciclasine (50 nM) leads to 1) marked actin cytoskeleton disorganization, resulting in cytokinesis impairment, and 2) protein synthesis impairment (elongation and initiation steps), whereas apoptosis is induced at higher doses only (≥200 nM). In addition to molecular docking validation and identification of potential binding sites, we biochemically confirmed that narciclasine directly binds to human recombinant and yeast-purified eEF1A in a nanomolar range, but not to actin or elongation factor 2, and that 5 nM narciclasine is sufficient to impair eEF1A-related actin bundling activity. eEF1A is thus a potential target to combat melanomas regardless of their apoptosis-sensitivity, and this finding reconciles the pleiotropic cytostatic of narciclasine. -
Collapse
|
87
|
Lamoral-Theys D, Pottier L, Kerff F, Dufrasne F, Proutière F, Wauthoz N, Neven P, Ingrassia L, Van Antwerpen P, Lefranc F, Gelbcke M, Pirotte B, Kraus JL, Nève J, Kornienko A, Kiss R, Dubois J. Simple di- and trivanillates exhibit cytostatic properties toward cancer cells resistant to pro-apoptotic stimuli. Bioorg Med Chem 2010; 18:3823-33. [PMID: 20466556 PMCID: PMC4966668 DOI: 10.1016/j.bmc.2010.04.047] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Revised: 04/08/2010] [Accepted: 04/16/2010] [Indexed: 01/20/2023]
Abstract
A series of 33 novel divanillates and trivanillates were synthesized and found to possess promising cytostatic rather than cytotoxic properties. Several compounds under study decreased by >50% the activity of Aurora A, B, and C, and WEE1 kinase activity at concentrations <10% of their IC(50) growth inhibitory ones, accounting, at least partly, for their cytostatic effects in cancer cells and to a lesser extent in normal cells. Compounds 6b and 13c represent interesting starting points for the development of cytostatic agents to combat cancers, which are naturally resistant to pro-apoptotic stimuli, including metastatic malignancies.
Collapse
Affiliation(s)
- Delphine Lamoral-Theys
- Laboratoire de Chimie Analytique, Toxicologie et Chimie Physique Appliquée, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Laurent Pottier
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Frédéric Kerff
- Centre d'Ingéniérie des Protéines, Institut de Chimie B6, Université de Liège, Liège, Belgium
| | - François Dufrasne
- Laboratoire de Chimie Pharmaceutique Organique, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Fabien Proutière
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Nathalie Wauthoz
- Laboratoire de Pharmacie Galénique et Biopharmacie, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Philippe Neven
- Laboratoire de Chimie Pharmaceutique, Centre Interfacultaire de Recherche du Médicament, Faculté de Médecine et de Pharmacie, Université de Liège, Liège, Belgium
| | - Laurent Ingrassia
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Pierre Van Antwerpen
- Laboratoire de Chimie Pharmaceutique Organique, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Florence Lefranc
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Michel Gelbcke
- Laboratoire de Chimie Pharmaceutique Organique, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Bernard Pirotte
- Laboratoire de Chimie Pharmaceutique, Centre Interfacultaire de Recherche du Médicament, Faculté de Médecine et de Pharmacie, Université de Liège, Liège, Belgium
| | - Jean-Louis Kraus
- Laboratoire de Chimie Biomoléculaire, CNRS, IBDML-UMR-6216, Campus de Luminy Case 907 13288, Marseille cedex 09, France
| | - Jean Nève
- Laboratoire de Chimie Pharmaceutique Organique, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
| | - Robert Kiss
- Laboratoire de Toxicologie, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Jacques Dubois
- Laboratoire de Chimie Analytique, Toxicologie et Chimie Physique Appliquée, Institut de Pharmacie, Université Libre de Bruxelles (ULB), Brussels, Belgium
| |
Collapse
|
88
|
Balde ES, Andolfi A, Bruyère C, Cimmino A, Lamoral-Theys D, Vurro M, Damme MV, Altomare C, Mathieu V, Kiss R, Evidente A. Investigations of fungal secondary metabolites with potential anticancer activity. JOURNAL OF NATURAL PRODUCTS 2010; 73:969-71. [PMID: 20415482 DOI: 10.1021/np900731p] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Fourteen metabolites, isolated from phytopathogenic and toxigenic fungi, were evaluated for their in vitro antigrowth activity for six distinct cancer cell lines, using the MTT colorimetric assay. Bislongiquinolide (1) and dihydrotrichodimerol (5), which belong to the bisorbicillinoid structural class, displayed significant growth inhibitory activity against the six cancer cell lines studied, while the remaining compounds displayed weak or no activity. The data show that 1 and 5 have similar growth inhibitory activities with respect to those cancer cell lines that display certain levels of resistance to pro-apoptotic stimuli or those that are sensitive to apoptosis. Quantitative videomicroscopy analysis revealed that 1 and 5 exert their antiproliferative effect through cytostatic and not cytotoxic activity. The preliminary results from the current study have stimulated further structure-activity investigations with respect to the growth inhibitory activity of compounds belonging to the bisorbicillinoid group.
Collapse
Affiliation(s)
- ElHadj Saidou Balde
- Laboratoire de Toxicologie and Laboratoire de Chimie Analytique, Toxicologie et Chimie Physique Appliquee, Institut de Pharmacie, Universite Libre de Bruxelles (ULB), Brussels, Belgium
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
89
|
Gao H, Zehl M, Kaehlig H, Schneider P, Stuppner H, Moreno Y Banuls L, Kiss R, Kopp B. Rapid structural identification of cytotoxic bufadienolide sulfates in toad venom from Bufo melanosticus by LC-DAD-MS(n) and LC-SPE-NMR. JOURNAL OF NATURAL PRODUCTS 2010; 73:603-608. [PMID: 20361780 DOI: 10.1021/np900746k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Toad venom, namely, "Chansu" in China, has been widely used for the treatment of heart failure, sores, pains, and various cancers. Upon LC-MS analysis of the venom from Bufo melanosticus collected in Indonesia, new bufadienolide sulfates were identified. For a complete characterization, the MeOH extract of the toad venom from B. melanosticus was fractionated by preparative HPLC, and the structures of five new buadienolide sulfates (1-5) along with one new bufogenin (6) were rapidly elucidated on the basis of LC-DAD-MS(n) and LC-SPE-NMR data. The in vitro growth inhibitory activity of these six compounds along with hellebrin (positive control) has been assayed by means of the MTT colorimetric assay in four human and two mouse cancer cell lines. Compound 3 and hellebrin displayed similar and marked in vitro cytotoxicity.
Collapse
Affiliation(s)
- Huimin Gao
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
90
|
Arcangeli A, Becchetti A. New Trends in Cancer Therapy: Targeting Ion Channels and Transporters. Pharmaceuticals (Basel) 2010; 3:1202-1224. [PMID: 27713296 PMCID: PMC4034029 DOI: 10.3390/ph3041202] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 03/25/2010] [Accepted: 03/29/2010] [Indexed: 02/07/2023] Open
Abstract
The expression and activity of different channel types mark and regulate specific stages of cancer establishment and progression. Blocking channel activity impairs the growth of some tumors, both in vitro and in vivo, which opens a new field for pharmaceutical research. However, ion channel blockers may produce serious side effects, such as cardiac arrhythmias. For instance, Kv11.1 (hERG1) channels are aberrantly expressed in several human cancers, in which they control different aspects of the neoplastic cell behaviour. hERG1 blockers tend to inhibit cancer growth. However they also retard the cardiac repolarization, thus lengthening the electrocardiographic QT interval, which can lead to life-threatening ventricular arrhythmias. Several possibilities exist to produce less harmful compounds, such as developing specific drugs that bind hERG1 channels in the open state or disassemble the ion channel/integrin complex which appears to be crucial in certain stages of neoplastic progression. The potential approaches to improve the efficacy and safety of ion channel targeting in oncology include: (1) targeting specific conformational channel states; (2) finding ever more specific inhibitors, including peptide toxins, for channel subtypes mainly expressed in well-identified tumors; (3) using specific ligands to convey traceable or cytotoxic compounds; (4) developing channel blocking antibodies; (5) designing new molecular tools to decrease channel expression in selected cancer types. Similar concepts apply to ion transporters such as the Na⁺/K⁺ pump and the Na⁺/H⁺ exchanger. Pharmacological targeting of these transporters is also currently being considered in anti-neoplastic therapy.
Collapse
Affiliation(s)
- Annarosa Arcangeli
- Department of Experimental Pathology and Oncology, University of Florence, Italy.
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Italy.
| | - Andrea Becchetti
- Department of Experimental Pathology and Oncology, University of Florence, Italy
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Italy
| |
Collapse
|
91
|
De P, Baltas M, Lamoral-Theys D, Bruyère C, Kiss R, Bedos-Belval F, Saffon N. Synthesis and anticancer activity evaluation of 2(4-alkoxyphenyl)cyclopropyl hydrazides and triazolo phthalazines. Bioorg Med Chem 2010; 18:2537-48. [DOI: 10.1016/j.bmc.2010.02.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Revised: 02/16/2010] [Accepted: 02/21/2010] [Indexed: 11/25/2022]
|
92
|
Smyrniotopoulos V, Vagias C, Bruyère C, Lamoral-Theys D, Kiss R, Roussis V. Structure and in vitro antitumor activity evaluation of brominated diterpenes from the red alga Sphaerococcus coronopifolius. Bioorg Med Chem 2010; 18:1321-30. [DOI: 10.1016/j.bmc.2009.12.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2009] [Revised: 12/02/2009] [Accepted: 12/08/2009] [Indexed: 10/20/2022]
|
93
|
Lamoral-Theys D, Andolfi A, Van Goietsenoven G, Cimmino A, Le Calvé B, Wauthoz N, Mégalizzi V, Gras T, Bruyère C, Dubois J, Mathieu V, Kornienko A, Kiss R, Evidente A. Lycorine, the main phenanthridine Amaryllidaceae alkaloid, exhibits significant antitumor activity in cancer cells that display resistance to proapoptotic stimuli: an investigation of structure-activity relationship and mechanistic insight. J Med Chem 2009; 52:6244-56. [PMID: 19788245 DOI: 10.1021/jm901031h] [Citation(s) in RCA: 192] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Twenty-two lycorine-related compounds were investigated for in vitro antitumor activity using four cancer cell lines displaying different levels of resistance to proapoptotic stimuli and two cancer cell lines sensitive to proapoptotic stimuli. Lycorine and six of its congeners exhibited potency in the single-digit micromolar range, while no compound appeared more active than lycorine. Lycorine also displayed the highest potential (in vitro) therapeutic ratio, being at least 15 times more active against cancer than normal cells. Our studies also showed that lycorine exerts its in vitro antitumor activity through cytostatic rather than cytotoxic effects. Furthermore, lycorine provided significant therapeutic benefit in mice bearing brain grafts of the B16F10 melanoma model at nontoxic doses. Thus, the results of the current study make lycorine an excellent lead for the generation of compounds able to combat cancers, which are naturally resistant to proapoptotic stimuli, such as glioblastoma, melanoma, non-small-cell-lung cancers, and metastatic cancers, among others.
Collapse
Affiliation(s)
- Delphine Lamoral-Theys
- Laboratoire de Chimie Analytique, Toxicologie et Chimie Physique Appliqueé, Institut de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
94
|
7-((4-Substituted)piperazin-1-yl) derivatives of ciprofloxacin: Synthesis and in vitro biological evaluation as potential antitumor agents. Bioorg Med Chem 2009; 17:5396-407. [DOI: 10.1016/j.bmc.2009.06.053] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Revised: 06/19/2009] [Accepted: 06/22/2009] [Indexed: 11/17/2022]
|