401
|
Anthracenedione derivatives as anticancer agents isolated from secondary metabolites of the mangrove endophytic fungi. Mar Drugs 2010; 8:1469-81. [PMID: 20479985 PMCID: PMC2866493 DOI: 10.3390/md8041469] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 04/01/2010] [Accepted: 04/21/2010] [Indexed: 01/21/2023] Open
Abstract
In this article, we report anticancer activity of 14 anthracenedione derivatives separated from the secondary metabolites of the mangrove endophytic fungi Halorosellinia sp. (No. 1403) and Guignardia sp. (No. 4382). Some of them inhibited potently the growth of KB and KBv200 cells, among which compound 6 displayed strong cytotoxicity with IC50 values of 3.17 and 3.21 μM to KB and KBv200 cells, respectively. Furthermore, we demonstrate that the mechanism involved in the apoptosis induced by compound 6 is probably related to mitochondrial dysfunction. Additionally, the structure-activity relationships of these compounds are discussed.
Collapse
|
402
|
Lahat G, Zhu QS, Huang KL, Wang S, Bolshakov S, Liu J, Torres K, Langley RR, Lazar AJ, Hung MC, Lev D. Vimentin is a novel anti-cancer therapeutic target; insights from in vitro and in vivo mice xenograft studies. PLoS One 2010; 5:e10105. [PMID: 20419128 PMCID: PMC2855704 DOI: 10.1371/journal.pone.0010105] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2009] [Accepted: 03/03/2010] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Vimentin is a ubiquitous mesenchymal intermediate filament supporting mechano-structural integrity of quiescent cells while participating in adhesion, migration, survival, and cell signaling processes via dynamic assembly/disassembly in activated cells. Soft tissue sarcomas and some epithelial cancers exhibiting "epithelial to mesenchymal transition" phenotypes express vimentin. Withaferin-A, a naturally derived bioactive compound, may molecularly target vimentin, so we sought to evaluate its effects on tumor growth in vitro and in vivo thereby elucidating the role of vimentin in drug-induced responses. METHODS AND FINDINGS Withaferin-A elicited marked apoptosis and vimentin cleavage in vimentin-expressing tumor cells but significantly less in normal mesenchymal cells. This proapoptotic response was abrogated after vimentin knockdown or by blockade of caspase-induced vimentin degradation via caspase inhibitors or overexpression of mutated caspase-resistant vimentin. Pronounced anti-angiogenic effects of Withaferin-A were demonstrated, with only minimal effects seen in non-proliferating endothelial cells. Moreover, Withaferin-A significantly blocked soft tissue sarcoma growth, local recurrence, and metastasis in a panel of soft tissue sarcoma xenograft experiments. Apoptosis, decreased angiogenesis, and vimentin degradation were all seen in Withaferin-A treated specimens. CONCLUSIONS In light of these findings, evaluation of Withaferin-A, its analogs, or other anti-vimentin therapeutic approaches in soft tissue sarcoma and "epithelial to mesenchymal transition" clinical contexts is warranted.
Collapse
Affiliation(s)
- Guy Lahat
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Quan-Sheng Zhu
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Kai-Lieh Huang
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Department of Cancer Biology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Suizhao Wang
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Svetlana Bolshakov
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Jeffery Liu
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Keila Torres
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Robert R. Langley
- Department of Cancer Biology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Alexander J. Lazar
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Department of Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Mien Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Dina Lev
- Sarcoma Research Center, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
- Department of Cancer Biology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, United States of America
| |
Collapse
|
403
|
Updated biotechnological approaches developed for 2,7′-cyclolignan production. Biotechnol Appl Biochem 2010; 55:139-53. [DOI: 10.1042/ba20090253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
404
|
Zhang JQ, Zhang ZW, Hui L, Chen SW, Tian X. Novel semisynthetic spin-labeled derivatives of podophyllotoxin with cytotoxic and antioxidative activity. Bioorg Med Chem Lett 2010; 20:983-6. [DOI: 10.1016/j.bmcl.2009.12.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2009] [Revised: 11/26/2009] [Accepted: 12/14/2009] [Indexed: 11/25/2022]
|
405
|
Valadares MC, De Carvalho ICT, Junior LDO, De Sousa Vieira M, Benfica PL, De Carvalho FS, Andrade LVS, Lima EM, Kato MJ. Cytotoxicity and antiangiogenic activity of grandisin. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.12.0017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
The antitumoural properties of grandisin, a tetrahydrofuran neolignan from Piper solmsianum, were investigated by in-vitro and in-vivo assays using the Ehrlich ascites tumoural (EAT) model.
Methods
Viability of the tumour cells was evaluated by Trypan blue exclusion and MTT methods, after incubation with grandisin (0.017-2.3 μM). The effects of grandisin on the activity of caspase-3, −6, −8, and −9 were also investigated using colorimetric protease kits. In-vivo studies were performed in EAT-bearing mice treated intraperitoneally with 2.5, 5 or 10 mg/kg grandisin for 10 days.
Key findings
Grandisin inhibited the growth of EAT cells, by both methods, with IC50 values less than 0.25 μM. The results showed that the activity of all the caspases studied increased in grandisin-treated cells, when compared with control, non-treated cells. Administering grandisin to EAT-bearing mice increased survival of the animals, in a dose-dependent manner. Simultaneously, we detected a 66.35% reduction of intraperitoneal tumour cell burden in the animals treated with 10 mg/kg grandisin. Additionally, in these animals, the marked increase of vascular endothelial growth factor (VEGF) levels, induced by EAT development, was decreased with treatment with grandisin, resulting in a reduction of 32.1% of VEGF levels in the peritoneal washing supernatant, when compared with the control.
Conclusions
The results demonstrated that grandisin induced in-vitro cytotoxicity and antiangiogenic effects in mice while it acted against tumour evolution, prolonging host survival.
Collapse
Affiliation(s)
- Marize C Valadares
- Laboratório de Farmacologia e Toxicologia Celular, Universidade Federal de Goiás, Goiânia, Go, Brazil
| | | | - Luiz de Oliveira Junior
- Laboratório de Farmacologia e Toxicologia Celular, Universidade Federal de Goiás, Goiânia, Go, Brazil
| | - Marcelo De Sousa Vieira
- Laboratório de Farmacologia e Toxicologia Celular, Universidade Federal de Goiás, Goiânia, Go, Brazil
| | - Polyana Lopes Benfica
- Laboratório de Farmacologia e Toxicologia Celular, Universidade Federal de Goiás, Goiânia, Go, Brazil
| | - Flávio Silva De Carvalho
- Laboratório de Farmacologia e Toxicologia Celular, Universidade Federal de Goiás, Goiânia, Go, Brazil
| | | | - Eliana Martins Lima
- Laboratório de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, Go, Brazil
| | - Massuo Jorge Kato
- Laboratório de Química de Produtos Naturais, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| |
Collapse
|
406
|
Abstract
Agelasines, asmarines and related compounds are natural products with a hybrid terpene-purine structure isolated from numerous genera of sponges (Agela sp., Raspailia sp.). Some agelasine analogs and related structures have displayed high general toxicity towards protozoa, and have exhibited broad-spectrum antimicrobial activity against a variety of species, including Mycobacterium tuberculosis, and also an important cytotoxic activity against several cancer cell lines, including multidrug-resistant ones. Of particular interest in this context are the asmarines (tetrahydro[1,4]diazepino[1,2,3-g,h]purines), which have shown potent antiproliferative activity against several types of human cancer cell lines. This review summarizes the sources of isolation, chemistry and bioactivity of marine alkylpurines and their bioactive derivatives.
Collapse
|
407
|
Lear MJ, Simon O, Foley TL, Burkart MD, Baiga TJ, Noel JP, DiPasquale AG, Rheingold AL, La Clair JJ. Laetirobin from the parasitic growth of Laetiporus sulphureus on Robinia pseudoacacia. JOURNAL OF NATURAL PRODUCTS 2009; 72:1980-1987. [PMID: 19842686 DOI: 10.1021/np9002838] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
(+/-)-Laetirobin (1) was isolated as a cytostatic lead from Laetiporus sulphureus growing parasitically on the black locust tree, Robinia pseudoacacia, by virtue of a reverse-immunoaffinity system. Using an LC/MS procedure, milligram quantities of (+/-)-laetirobin (1) were obtained, and the structure of 1 was elucidated by X-ray crystallography and confirmed by NMR spectroscopy. Preliminary cellular studies indicated that (+/-)-laetirobin (1) rapidly enters in tumor cells, blocks cell division at a late stage of mitosis, and invokes apoptosis.
Collapse
Affiliation(s)
- Martin J Lear
- Department of Chemistry, and Medicinal Chemistry Program of the Life Sciences Institute, National University of Singapore, 3 Science Drive 3, Singapore 117543.
| | | | | | | | | | | | | | | | | |
Collapse
|
408
|
Cancer-relevant biochemical targets of cytotoxic Lonchocarpus flavonoids: A molecular docking analysis. J Mol Model 2009; 16:311-26. [DOI: 10.1007/s00894-009-0547-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Accepted: 06/11/2009] [Indexed: 11/25/2022]
|
409
|
Gomez-Flores R, Verástegui-Rodríguez L, Quintanilla-Licea R, Tamez-Guerra P, Monreal-Cuevas E, Tamez-Guerra R, Rodríguez-Padilla C. Antitumor Properties ofGymnosperma GlutinosumLeaf Extracts. Cancer Invest 2009; 27:149-55. [DOI: 10.1080/07357900802192190] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
410
|
Lopes FCM, Rocha A, Pirraco A, Regasini LO, Silva DHS, Bolzani VS, Azevedo I, Carlos IZ, Soares R. Anti-angiogenic effects of pterogynidine alkaloid isolated from Alchornea glandulosa. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2009; 9:15. [PMID: 19463163 PMCID: PMC2694145 DOI: 10.1186/1472-6882-9-15] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2008] [Accepted: 05/22/2009] [Indexed: 12/31/2022]
Abstract
Background Angiogenesis, a complex multistep process that comprehends proliferation, migration and anastomosis of endothelial cells (EC), has a major role in the development of pathologic conditions such as inflammatory diseases, tumor growth and metastasis. Brazilian flora, the most diverse in the world, is an interesting spot to prospect for new chemical leads, being an important source of new anticancer drugs. Plant-derived alkaloids have traditionally been of interest due to their pronounced physiological activities. We investigated the anti-angiogenic potential of the naturally occurring guanidine alkaloid pterogynidine (Pt) isolated from the Brazilian plant Alchornea glandulosa. The purpose of this study was to examine which features of the angiogenic process could be disturbed by Pt. Methods Human umbilical vein endothelial cells (HUVEC) were incubated with 8 μM Pt and cell viability, proliferation, apoptosis, invasion and capillary-like structures formation were addressed. Nuclear factor κB (NFκB), a transcription factor implicated in these processes, was also evaluated in HUVEC incubated with Pt. Quantifications were expressed as mean ± SD of five independent experiments and one-way analysis of variance (ANOVA) followed by the Dunnet test was used. Results A significant decrease in proliferation and invasion capacity and an effective increase in apoptosis as assessed by bromodeoxyuridine (BrdU), double-chamber and terminal transferase dUTP nick end labeling (TUNEL) assay, respectively, have been found. Pt also led to a drastic reduction in the number of capillary-like structures formation when HUVEC were cultured on growth factor reduced-Matrigel (GFR-Matrigel) coated plates. In addition, incubation of HUVEC with Pt resulted in reduced NFκB activity. Conclusion These findings emphasize the potential use of Pt against pathological situations where angiogenesis is stimulated as tumor development.
Collapse
|
411
|
Abstract
X-ray crystallographic data available from complexes of natural and synthetic molecules with the enzyme thrombin has led to the design and synthesis of truncated and hydrid molecules exhibiting excellent inhibition in vitro. The design element has also been extended to the synthesis and in vitro inhibition of a series of achiral molecules deploying aromatic and heterocyclic core motifs with appropriately functionalized appendages that provide excellent binding interactions at the S1, S2, and S3 sites of thrombin. Excellent selectivity for thrombin over trypsin has also been observed. Thus, studies in total synthesis of highly active natural aeruginosins have inspired further work toward truncated and hybrid analogs with excellent inhibitory activities. Structure-based organic synthesis has guided our research from natural products toward unnatural drug-like prototypes.
Collapse
|
412
|
Synthesis and biological evaluation of novel conjugates of podophyllotoxin and 5-FU as antineoplastic agents. Bioorg Med Chem 2009; 17:3111-7. [DOI: 10.1016/j.bmc.2009.03.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 02/28/2009] [Accepted: 03/03/2009] [Indexed: 11/17/2022]
|
413
|
Jensen NA, Gerth K, Grotjohann T, Kapp D, Keck M, Niehaus K. Establishment of a high content assay for the identification and characterisation of bioactivities in crude bacterial extracts that interfere with the eukaryotic cell cycle. J Biotechnol 2009; 140:124-34. [DOI: 10.1016/j.jbiotec.2008.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Revised: 11/21/2008] [Accepted: 12/03/2008] [Indexed: 01/18/2023]
|
414
|
Brohem C, Sawada T, Massaro R, Almeida R, Rivelli D, Ropke C, da Silva V, de Lima T, Curi R, Barros S, Maria-Engler S. Apoptosis induction by 4-nerolidylcatechol in melanoma cell lines. Toxicol In Vitro 2009; 23:111-9. [PMID: 19059332 DOI: 10.1016/j.tiv.2008.11.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Revised: 11/12/2008] [Accepted: 11/13/2008] [Indexed: 01/07/2023]
|
415
|
Rajamanickam S, Agarwal R. Natural products and colon cancer: current status and future prospects. Drug Dev Res 2008; 69:460-471. [PMID: 19884979 DOI: 10.1002/ddr.20276] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Carcinogenesis is a multistage process consisting of initiation, promotion and progression phases. Thus, the multistage sequence of events has many phases for prevention and intervention. Chemoprevention, a novel approach for controlling cancer, involves the use of specific natural products or synthetic chemical agents to reverse, suppress or prevent premalignancy before the development of invasive cancer. Several natural products, such as, grains, nuts, cereals, spices, fruits, vegetables, beverages, medicinal plants and herbs and their various phytochemical constituents including, phenolics, flavonoids, carotenoids, alkaloids, nitrogen containing as well as organosulfur compounds confer protective effects against wide range of cancers including colon cancer. Since diet has an important role in the etiology of colon cancer, dietary chemoprevention received attention for colon cancer prevention. However, identification of an agent with chemopreventive potential requires in vitro studies, efficacy and toxicity studies in animal models before embarking on human clinical trials. A brief introduction about colon cancer and the role of some recent natural products in colon cancer chemoprevention with respect to multiple molecular mechanisms in various in vitro, in vivo and clinical studies are described in this review.
Collapse
Affiliation(s)
- Subapriya Rajamanickam
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Colorado Denver, Denver, Colorado, USA
| | | |
Collapse
|
416
|
Bradke TM, Hall C, Carper SW, Plopper GE. Phenylboronic acid selectively inhibits human prostate and breast cancer cell migration and decreases viability. Cell Adh Migr 2008; 2:153-60. [PMID: 19262119 DOI: 10.4161/cam.2.3.6484] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We compared the in vitro effect of boric acid (BA) versus phenylboronic acid (PBA) on the migration of prostate and breast cancer cell lines and non-tumorigenic cells from the same tissues. Treatment at 24 hours with BA (< or =500 microM) did not inhibit chemotaxis on fibronectin in any cell line. However, treatment over the same time course with concentrations of PBA as low as 1 muM significantly inhibited cancer cell migration without effecting non-tumorigenic cell lines. The compounds did not affect cell adhesion or viability at 24 hours but did alter morphology; both decreased cancer cell viability at eight days. These results suggest that PBA is more potent than BA in targeting the metastatic and proliferative properties of cancer cells.
Collapse
Affiliation(s)
- Tiffany M Bradke
- Department of Biology, Rensselaer Polytechnic Institute, Troy, New York 12180-3596, USA
| | | | | | | |
Collapse
|
417
|
Abdul AB, Abdelwahab SI, Al-Zubairi AS, Elhassan MM, Murali SM. Anticancer and Antimicrobial Activities of Zerumbone from the Rhizomes of Zingiber zerumbut. INT J PHARMACOL 2008. [DOI: 10.3923/ijp.2008.301.304] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|