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Sato M, Mochizuki H, Goto-Koshino Y, Fujiwara-Igarashi A, Takahashi M, Ohno K, Tsujimoto H. Prognostic significance of hypermethylation of death-associated protein kinase (DAPK) gene CpG island in dogs with high-grade B-cell lymphoma. Vet Comp Oncol 2018. [DOI: 10.1111/vco.12395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- M. Sato
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
| | - H. Mochizuki
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
| | - Y. Goto-Koshino
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
| | - A. Fujiwara-Igarashi
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
| | - M. Takahashi
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
| | - K. Ohno
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
| | - H. Tsujimoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
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2
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Honndorf VS, Wiehr S, Rolle AM, Schmitt J, Kreft L, Quintanilla-Martinez L, Kohlhofer U, Reischl G, Maurer A, Boldt K, Schwarz M, Schmidt H, Pichler BJ. Preclinical evaluation of the anti-tumor effects of the natural isoflavone genistein in two xenograft mouse models monitored by [18F]FDG, [18F]FLT, and [64Cu]NODAGA-cetuximab small animal PET. Oncotarget 2017; 7:28247-61. [PMID: 27070087 PMCID: PMC5053724 DOI: 10.18632/oncotarget.8625] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 02/28/2016] [Indexed: 12/11/2022] Open
Abstract
The natural phytoestrogen genistein is known as protein kinase inhibitor and tumor suppressor in various types of cancers. We studied its antitumor effect in two different xenograft models using positron emission tomography (PET) in vivo combined with ex vivo histology and nuclear magnetic resonance (NMR) metabolic fingerprinting.
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Affiliation(s)
- Valerie S Honndorf
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
| | - Stefan Wiehr
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
| | - Anna-Maria Rolle
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
| | - Julia Schmitt
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
| | - Luisa Kreft
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
| | | | - Ursula Kohlhofer
- Institute of Pathology, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Gerald Reischl
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
| | - Andreas Maurer
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
| | - Karsten Boldt
- Medical Proteome Center, Institute for Ophthalmic Research, Eberhard Karls University, Tuebingen, Germany
| | - Michael Schwarz
- Institute of Experimental and Clinical Pharmacology and Toxicology, Department of Toxicology, Eberhard Karls University, Tuebingen, Germany
| | - Holger Schmidt
- Department of Radiology, Diagnostic and Interventional Radiology, Eberhard Karls University, Tuebingen, Germany
| | - Bernd J Pichler
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tuebingen, Germany
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3
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Pawlak A, Gładkowski W, Mazur M, Henklewska M, Obmińska-Mrukowicz B, Rapak A. Optically active stereoisomers of 5-(1-iodoethyl)-4-(4'-isopropylphenyl)dihydrofuran-2-one: The effect of the configuration of stereocenters on apoptosis induction in canine cancer cell lines. Chem Biol Interact 2016; 261:18-26. [PMID: 27867085 DOI: 10.1016/j.cbi.2016.11.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/27/2016] [Accepted: 11/16/2016] [Indexed: 02/06/2023]
Abstract
Four stereoisomers of δ-iodo-γ-lactones with p-isopropylphenyl substituent at β-position: cis-(4R,5R,6S)-1, cis-(4S,5S,6R)-2, trans-(4R,5S,6R)-3, trans-(4S,5R,6S)-4 with proved antiproliferative activity were subjected to in vitro tests for a better understanding of their anticancer activity. The subject of our interest was a possible relationship between a configuration of chiral centers of the studied lactones and their anticancer potency against a panel of canine cell lines representing hematopoietic (CLBL-1, GL-1, CL-1, CLB70) and mammary gland cancers (P114, CMT-U27, CMT-U309). To determine the anticancer activity of the tested compounds, cell viability and cell metabolic activity were checked using propidium iodide staining and the MTT test. To determine whether the studied compounds cause necrotic or apoptotic cell death, two assays for apoptosis evaluation were performed, annexin V staining and detection of caspase 3/7 activation. Simultaneously, the effects of the compounds on the cell cycle were also examined. The conducted research confirmed the anticancer potential of the tested lactones against canine cancers. The investigated isomers exerted higher activity against canine lymphoma/leukemia cell lines than against mammary tumors, whereas the configuration of stereogenic centers of the examined compounds affected their activity. It has been shown that stereoisomers with 4S configuration (2,4) were more active, and the most potent one was the cis-(4S,5S,6R)-2 isomer. The investigated lactones seemed to initiate the process of apoptosis rather than acting as typical cytostatic agents, as cell death via apoptosis, and no increase in G2-M population in the cell cycle analysis were observed. The presented study demonstrated that all four stereoisomers of δ-iodo-γ-lactones with p-isopropylphenyl substituent at β-position induced apoptosis via a mitochondrial-mediated, caspase-dependent pathway.
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Affiliation(s)
- Aleksandra Pawlak
- Department of Biochemistry, Pharmacology and Toxicology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland.
| | - Witold Gładkowski
- Department of Chemistry, Faculty of Food Science, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Marcelina Mazur
- Department of Chemistry, Faculty of Food Science, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Marta Henklewska
- Department of Biochemistry, Pharmacology and Toxicology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland.
| | - Bożena Obmińska-Mrukowicz
- Department of Biochemistry, Pharmacology and Toxicology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland.
| | - Andrzej Rapak
- Laboratory of Tumor Molecular Immunobiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Wroclaw, Weigla 12, 53-114 Wroclaw, Poland.
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4
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XIE JIE, WANG JIANCHAO, ZHU BO. Genistein inhibits the proliferation of human multiple myeloma cells through suppression of nuclear factor-κB and upregulation of microRNA-29b. Mol Med Rep 2015; 13:1627-32. [DOI: 10.3892/mmr.2015.4740] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 06/22/2015] [Indexed: 11/05/2022] Open
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5
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Pondugula SR, Ferniany G, Ashraf F, Abbott KL, Smith BF, Coleman ES, Mansour M, Bird RC, Smith AN, Karthikeyan C, Trivedi P, Tiwari AK. Stearidonic acid, a plant-based dietary fatty acid, enhances the chemosensitivity of canine lymphoid tumor cells. Biochem Biophys Res Commun 2015; 460:1002-7. [PMID: 25847597 DOI: 10.1016/j.bbrc.2015.03.141] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 03/24/2015] [Indexed: 01/26/2023]
Abstract
Lymphoma is the most common hematopoietic tumor in dogs and humans, with similar pathogenesis and therapeutic responses. Anticancer drugs like vincristine (VCR) and doxorubicin (DOX) are often used in treating lymphoma. However, the cure rate is generally poor due to chemoresistance. Here, we sought to determine whether stearidonic acid (SDA), a plant-based dietary fatty acid, sensitizes chemoresistant canine lymphoid-tumor cells. GL-1 B-cell lymphoid-tumor cells were found to be highly sensitive to the antitumor-activity of VCR and DOX, while OSW T-cell and 17-71 B-cell lymphoid-tumor cells were moderately and fully resistant, respectively. SDA, at its non-toxic concentrations, significantly promoted the antitumor action of VCR and DOX in both OSW and 17-71 cells. SDA-mediated chemosensitization was associated with SDA inhibition of P-glycoprotein (P-gp) function. This was confirmed in HEK293 cells stably expressing P-gp as well as by increased binding-affinity of SDA to P-gp in P-gp docking analysis. SDA at its chemosensitizing concentrations did not affect the viability of healthy dog peripheral blood mononuclear cells, suggesting that SDA is non-toxic to normal dog peripheral blood leucocytes at its chemosensitizing concentrations. Our study identifies a novel dietary fatty acid that may be used as a dietary supplement in combination with chemotherapy to promote the antitumor efficacy of the chemotherapy drugs in dogs and possibly in humans with chemoresistant lymphoma.
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Affiliation(s)
- Satyanarayana R Pondugula
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA.
| | - Glennie Ferniany
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA
| | - Farah Ashraf
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA
| | - Kodye L Abbott
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Bruce F Smith
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA; Scott-Ritchey Research Center, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Elaine S Coleman
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA
| | - Mahmoud Mansour
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - R Curtis Bird
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Annette N Smith
- Department of Clinical Sciences, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Chandrabose Karthikeyan
- School of Pharmaceutical Sciences, Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, MP 462033, India
| | - Piyush Trivedi
- School of Pharmaceutical Sciences, Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, MP 462033, India
| | - Amit K Tiwari
- Department of Pharmacology and Experimental Therapeutics, The University of Toledo, Toledo, OH 43614, USA
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6
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Raditic DM, Bartges JW. Evidence-based Integrative Medicine in Clinical Veterinary Oncology. Vet Clin North Am Small Anim Pract 2014; 44:831-53. [DOI: 10.1016/j.cvsm.2014.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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7
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Silva G, Fachin AL, Beleboni RO, França SC, Marins M. In vitro action of flavonoids in the canine malignant histiocytic cell line DH82. Molecules 2013; 18:15448-63. [PMID: 24352006 PMCID: PMC6270055 DOI: 10.3390/molecules181215448] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 11/17/2013] [Accepted: 11/18/2013] [Indexed: 01/20/2023] Open
Abstract
Cancer is commonly diagnosed in dogs over the age of 10 and is a leading cause of death due to the lack of effective drugs. Flavonoids possess antioxidant, anti-inflammatory and anticarcinogenic properties and have been studied as chemopreventive agents in human cancer therapy. However, the literature on dogs is sparse. In this study, we analyzed the effect of nine flavonoids on cell viability, DNA damage and topoisomerase IIa/IIb gene expression in a canine tumor cell line (DH82). Apigenin, luteolin, trans-chalcone and 4-methoxychalcone showed the highest degree of cytotoxicity in the absence of considerable DNA damage, whereas genistein exhibited low cytotoxicity but induced a high level of DNA damage. These five flavonoids inhibited topoisomerase IIa and IIb gene expression to variable extents and with variable specificity. Genistein exerted a lower inhibitory effect on the two topoisomerases than luteolin and apigenin. trans-Chalcone and 4-methoxychalcone exerted greater inhibition of topoisomerase IIa expression than topoisomerase IIb. The differences in the effects between genistein and luteolin and apigenin might be explained by the position of ring B, whereas the more specific effect of chalcones on topoisomerase IIa might be due to their open chain structure.
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Affiliation(s)
| | | | | | | | - Mozart Marins
- Biotechnology Unit, University of Ribeirão Preto, Ribeirão Preto 14096-900, SP, Brazil.
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8
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Yakimchuk K, Jondal M, Okret S. Estrogen receptor α and β in the normal immune system and in lymphoid malignancies. Mol Cell Endocrinol 2013; 375:121-9. [PMID: 23707618 DOI: 10.1016/j.mce.2013.05.016] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 05/14/2013] [Accepted: 05/18/2013] [Indexed: 02/07/2023]
Abstract
Estrogens regulate various normal and pathophysiological processes including cancers. Cellular signaling by estrogens is mediated by estrogen receptor α (ERα) and β (ERβ), respectively. Binding of agonists to the ERs affects gene transcription. The main endogenous estrogen, 17β-estradiol (E2), binds to both ERα and ERβ with similar affinity. However, the ligand-binding pocket of ERα and ERβ are slightly different which has allowed the development of selective ER ligands. Importantly, while estrogens via ERα stimulate proliferation, signaling via ERβ inhibits proliferation and promotes apoptosis. In both normal and cancer cells the ERs are co-expressed with ER splice variants which may modify the transcriptional activity of the wild-type receptors. Estrogens have prominent effects on immune functions and both ERα and ERβ are expressed in immune cells and lymphoid malignancies. With regard to lymphoid malignancies, most show estrogen influence as several epidemiological studies of lymphoid cancers demonstrate gender differences in incidence and prognosis with males being more affected. In line with these findings, recent results generated by us have shown that ERβ selective agonists inhibit growth and induce apoptosis in human and murine lymphomas in vivo in xenograft experiments. This suggests that ERβ selective agonists in the future may be useful in the treatment of lymphomas.
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Affiliation(s)
- Konstantin Yakimchuk
- Department of Biosciences and Nutrition, Karolinska Institutet, Novum, SE-141 83 Huddinge, Sweden
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9
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Yan GR, Zou FY, Dang BL, Zhang Y, Yu G, Liu X, He QY. Genistein-induced mitotic arrest of gastric cancer cells by downregulating KIF20A, a proteomics study. Proteomics 2013; 12:2391-9. [PMID: 22887948 DOI: 10.1002/pmic.201100652] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Genistein exerts its anticarcinogenic effects by inducing G2/M arrest and apoptosis of cancer cells. However, the precise molecular mechanism of action of genistein has not been completely elucidated. In this study, we used quantitative proteomics to identify the genistein-induced protein alterations in gastric cancer cells and investigate the molecular mechanism responsible for the anti-cancer actions of genistein. Total 86 proteins were identified to be regulated by genistein, most of which were clustered into the regulation of cell division and G2/M transition, consistent with the anti-cancer effect of genistein. Many proteins including kinesin family proteins, TPX2, CDCA8, and CIT were identified for the first time to be regulated by genistein. Interestingly, five kinesin family proteins including KIF11, KIF20A, KIF22, KIF23, and CENPF were found to be simultaneously downregulated by genistein. Significantly decreased KIF20A was selected for further functional studies. The silencing of KIF20A inhibited cell viability and induced G2/M arrest, similar to the effects of genistein treatment in gastric cancer. And the silencing of KIF20A also increased cancer cell sensitivity to genistein inhibition, whereas overexpression of KIF20A markedly attenuated genistein-induced cell viability inhibition and G2/M arrest. These observations suggested that KIF20A played an important role in anti-cancer actions of genistein, and thus may be a potential molecular target for drug intervention of gastric cancer.
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Affiliation(s)
- Guang-Rong Yan
- Institute of Life and Health Engineering, and National Engineering and Research Center for Genetic Medicine, Jinan University, Guangzhou, China
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10
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Helmerick EC, Loftus JP, Wakshlag JJ. The effects of baicalein on canine osteosarcoma cell proliferation and death. Vet Comp Oncol 2012; 12:299-309. [PMID: 23228048 DOI: 10.1111/vco.12013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 10/29/2012] [Accepted: 10/30/2012] [Indexed: 12/23/2022]
Abstract
Flavonoids are a group of modified triphenolic compounds from plants with medicinal properties. Baicalein, a specific flavone primarily isolated from plant roots (Scutellaria baicalensis), is commonly used in Eastern medicine for its anti-inflammatory and antineoplastic properties. Previous research shows greater efficacy for baicalein than most flavonoids; however, there has been little work examining their effects on sarcoma cells, let alone canine cells. Three canine osteosarcoma cell lines (HMPOS, D17 and OS 2.4) were treated with baicalein to examine cell viability, cell cycle kinetics, anchorage-independent growth and apoptosis. Results showed that osteosarcoma cells were sensitive to baicalein at concentrations from approximately 1 to 25 μM. Modest cell cycle changes were observed in one cell line. Baicalein was effective in inducing apoptosis and did not prevent doxorubicin cell proliferation inhibition in all the cell lines. The mechanism for induction of apoptosis has not been fully elucidated; however, changes in mitochondrial permeability supersede the apoptotic response.
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Affiliation(s)
- E C Helmerick
- Department of Clinical Sciences, Cornell University College of Veterinary Medicine, Ithaca, NY, USA
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11
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Feng D, Qiu F, Tong Z, Xie C. Oral Pharmacokinetic Comparison of Different Genistein Tablets in Beagle Dogs. J Chromatogr Sci 2012; 51:335-40. [DOI: 10.1093/chromsci/bms145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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12
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Di X, Andrews DMK, Tucker CJ, Yu L, Moore AB, Zheng X, Castro L, Hermon T, Xiao H, Dixon D. A high concentration of genistein down-regulates activin A, Smad3 and other TGF-β pathway genes in human uterine leiomyoma cells. Exp Mol Med 2012; 44:281-92. [PMID: 22228119 PMCID: PMC3349910 DOI: 10.3858/emm.2012.44.4.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Previously, we found that high doses of genistein show an inhibitory effect on uterine leiomyoma (UtLM) cell proliferation. In this study, using microarray analysis and Ingenuity Pathways Analysis™, we identified genes (up- or down-regulated, ≥ 1.5 fold, P ≤ 0.001), functions and signaling pathways that were altered following treatment with an inhibitory concentration of genistein (50 µg/ml) in UtLM cells. Downregulation of TGF-β signaling pathway genes, activin A, activin B, Smad3, TGF-β2 and genes related to cell cycle regulation, with the exception of the upregulation of the CDK inhibitor P15, were identified and validated by real-time RT-PCR studies. Western blot analysis further demonstrated decreased protein expression of activin A and Smad3 in genistein-treated UtLM cells. Moreover, we found that activin A stimulated the growth of UtLM cells, and the inhibitory effect of genistein was partially abrogated in the presence of activin A. Overexpression of activin A and Smad3 were found in tissue samples of leiomyoma compared to matched myometrium, supporting the contribution of activin A and Smad3 in promoting the growth of UtLM cells. Taken together, these results suggest that down-regulation of activin A and Smad3, both members of the TGF-β pathway, may offer a mechanistic explanation for the inhibitory effect of a high-dose of genistein on UtLM cells, and might be potential therapeutic targets for treatment of clinical cases of uterine leiomyomas.
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Affiliation(s)
- Xudong Di
- Molecular Pathogenesis Group, National Toxicology Program (NTP) Laboratories Branch, National Institute of Environmental Health Sciences, National Institutes of Health (NIH), Research Triangle Park, North Carolina 27709, USA
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13
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Yan GR, Yin XF, Xiao CL, Tan ZL, Xu SH, He QY. Identification of novel signaling components in genistein-regulated signaling pathways by quantitative phosphoproteomics. J Proteomics 2011; 75:695-707. [DOI: 10.1016/j.jprot.2011.09.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 09/09/2011] [Accepted: 09/09/2011] [Indexed: 12/27/2022]
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Seiser EL, Thomas R, Richards KL, Kelley MK, Moore P, Suter SE, Breen M. Reading between the lines: molecular characterization of five widely used canine lymphoid tumour cell lines. Vet Comp Oncol 2011; 11:30-50. [PMID: 22236332 DOI: 10.1111/j.1476-5829.2011.00299.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Molecular characterization of tumour cell lines is increasingly regarded as a prerequisite for defining their validity as models of in vivo neoplasia. We present the first comprehensive catalogue of genomic and transcriptional characteristics of five widely used canine lymphoid tumour cell lines. High-resolution microarray-based comparative genomic hybridization defined their unique profiles of genomic DNA copy number imbalance. Multicolour fluorescence in situ hybridization identified aberrant gains of MYC, KIT and FLT3 and deletions of PTEN and CDKN2 in individual cell lines, and also revealed examples of extensive structural chromosome reorganization. Gene expression profiling and RT-PCR analyses defined the relationship between genomic imbalance and transcriptional dysregulation in each cell line, clarifying their relevance as models of discrete functional pathways with biological and therapeutic significance. In combination, these data provide an extensive resource of molecular data for directing the appropriate use of these cell lines as tools for studying canine lymphoid neoplasia.
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Affiliation(s)
- E L Seiser
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA
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Xiao JX, Huang GQ, Geng X, Qiu HW. Soy-derived isoflavones inhibit HeLa cell growth by inducing apoptosis. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2011; 66:122-8. [PMID: 21503668 DOI: 10.1007/s11130-011-0224-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Isoflavones are among the major bioactive compounds found in a wide variety of plant-derived foods, especially in soybeans and soy-based foods. In this study, the effect of a soy-derived isoflavone mixture (designated as SI-I, containing 71% daidzein, 14.3% genistein and 14.7% glycitein) on HeLa cells and its mechanism were investigated. SI-I in concentration range 5-80 μg/ml significantly reduced the survival rate of HeLa cells by MTT assay, whereas showed no side effect on that of L929 cells. After HeLa cells were exposed to 10, 20 and 40 μg/ml SI-I for 4 days, typical apoptotic morphological changes, including nuclear fragmentation, cytoplasm shrinkage and decrease of cell volume, were observed by fluorescence microscope and CLSM, respectively. FCM analysis revealed that the percentages of early apoptotic cells with lost Δψm increased by 2.27, 2.74 and 4.05 folds respectively, compared with control. The results showed that SI-I inhibited HeLa cell growth through inducing apoptosis via the mitochondrial pathway and comparisons with reported data indicated that synergistic effect existed between the isoflavone species contained in SI-I. It is proposed that natural soy-derived isoflavones are potential candidates as chemotherapeutic agents against human cervical cancer.
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Affiliation(s)
- Jun-Xia Xiao
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China.
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16
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Yakimchuk K, Iravani M, Hasni MS, Rhönnstad P, Nilsson S, Jondal M, Okret S. Effect of ligand-activated estrogen receptor β on lymphoma growth in vitro and in vivo. Leukemia 2011; 25:1103-10. [PMID: 21502954 DOI: 10.1038/leu.2011.68] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Estrogen receptor β (ERβ) is expressed in immune cells and studies have suggested an antiproliferative function of ERβ. We detected ERβ expression in murine T- and human B-cell lymphoma cell lines and analyzed the effects of estradiol and selective ERβ agonists on lymphoma growth in culture and in vivo. Treating the cells with estradiol had minor effects on cell growth, whereas the selective ERβ agonists diarylpropionitrile (DPN) and KB9520 showed a strong antiproliferative effect. When grafting mice with murine T-cell lymphoma cells, male mice developed larger tumors compared with female mice, a difference that was abolished following ovariectomy, showing estrogen-dependent growth in vivo. To investigate whether lymphoma growth may be inhibited in vivo by ERβ agonist treatment, mice grafted with murine lymphoma cells were treated with DPN or KB9520. Both ERβ-selective agonists strongly inhibited lymphoma growth. The reduced tumor size seen following either DPN or KB9520 treatment was due to reduced proliferation and increased apoptosis. Our results show an ERβ ligand-dependent antiproliferative effect of lymphoma cells expressing endogenous ERβ and that lymphoma cell growth in vivo can efficiently be inhibited by ERβ agonists. This suggests that ERβ agonists may be useful in the treatment of lymphomas.
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Affiliation(s)
- K Yakimchuk
- Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Huddinge, Sweden
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Sato M, Goto-Koshino Y, Kanemoto H, Mochizuki H, Fujino Y, Ohno K, Tsujimoto H. Characterization of canine BCL6 cDNA and detection systems for its protein expression. Vet Immunol Immunopathol 2011; 140:166-9. [DOI: 10.1016/j.vetimm.2010.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 08/18/2010] [Accepted: 08/22/2010] [Indexed: 10/19/2022]
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Evaluation of the prognostic significance of BCL6 gene expression in canine high-grade B-cell lymphoma. Vet J 2011; 191:108-14. [PMID: 21277811 DOI: 10.1016/j.tvjl.2010.12.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 11/14/2010] [Accepted: 12/06/2010] [Indexed: 01/09/2023]
Abstract
The clinical usefulness of BCL6 gene expression was evaluated as a prognostic indicator in dogs with high-grade B-cell lymphoma. Forty-four dogs were diagnosed with centroblastic or B-cell immunoblastic type lymphoma according to the updated Kiel classification. BCL6 mRNA expression was measured by real-time PCR and its relationship with prognosis was analyzed. Progression-free and overall survival was not significantly different between the high BCL6 expression group (higher than the median) and the low BCL6 expression group (lower than the median) (P=0.99 and P=0.61, respectively). No correlation between BCL6 and prognosis was observed in this study, which is inconsistent with findings reported for human diffuse large B-cell lymphoma. BCL6 protein expression was not detected in the 11 dogs evaluated by immunohistochemistry. Furthermore, BCL6 protein expression was assessed in 13 archived paraffin-embedded high-grade canine lymphoma tissues and all were also negative. The results suggest that most canine high-grade B-cell lymphomas correspond to human diffuse large B-cell lymphoma with no immunohistochemical expression of BCL6.
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Barbonetti A, Vassallo MRC, Fortunato D, Francavilla S, Maccarrone M, Francavilla F. Energetic metabolism and human sperm motility: impact of CB₁ receptor activation. Endocrinology 2010; 151:5882-92. [PMID: 20962050 PMCID: PMC2999496 DOI: 10.1210/en.2010-0484] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Accepted: 09/22/2010] [Indexed: 12/19/2022]
Abstract
It has been reported that the endocannabinoid anandamide (AEA) exerts an adverse effect on human sperm motility, which has been ascribed to inhibition of mitochondrial activity. This seems to be at variance with evidence suggesting a major role of glycolysis in supplying ATP for sperm motility; furthermore, the role of AEA-binding receptors in mediating mitochondrial inhibition has not yet been explored. In this study, human sperm exposure to Met-AEA (methanandamide, nonhydrolyzable analog of AEA) in the micromolar range significantly decreased mitochondrial transmembrane potential (ΔΨm), similarly to rotenone, mitochondrial complex I inhibitor. The effect of Met-AEA (1 μm) was prevented by SR141716, CB(1) cannabinoid receptor antagonist, but not by SR144528, CB(2) antagonist, nor by iodoresiniferatoxin, vanilloid receptor antagonist. The effect of Met-AEA did not involve activation of caspase-9 or caspase-3 and was reverted by washing. In the presence of glucose, sperm exposure either to Met-AEA up to 1 μm or to rotenone for up to 18 h did not affect sperm motility. At higher doses Met-AEA produced a CB(1)-independent poisoning of spermatozoa, reducing their viability. Under glycolysis blockage, 1 μm Met-AEA, similarly to rotenone, dramatically abolished sperm motility, an effect that was prevented by SR1 and reverted by washing. In conclusion, CB(1) activation induced a nonapoptotic decrease of ΔΨm, the detrimental reflection on sperm motility of which could be revealed only under glycolysis blockage, unless very high doses of Met-AEA, producing CB(1)-independent sperm toxicity, were used. The effects of CB(1) activation reported here contribute to elucidate the relationship between energetic metabolism and human sperm motility.
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Affiliation(s)
- A Barbonetti
- Department of Internal Medicine, University of L'Aquila, L'Aquila, Italy
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Li W, Frame LT, Hirsch S, Cobos E. Genistein and hematological malignancies. Cancer Lett 2010; 296:1-8. [DOI: 10.1016/j.canlet.2010.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 04/29/2010] [Accepted: 05/03/2010] [Indexed: 02/04/2023]
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Yan GR, Xiao CL, He GW, Yin XF, Chen NP, Cao Y, He QY. Global phosphoproteomic effects of natural tyrosine kinase inhibitor, genistein, on signaling pathways. Proteomics 2010; 10:976-86. [PMID: 20049867 DOI: 10.1002/pmic.200900662] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Genistein is a natural protein tyrosine kinase inhibitor that exerts anti-cancer effect by inducing G2/M arrest and apoptosis. However, the phosphotyrosine signaling pathways mediated by genistein are largely unknown. In this study, we combined tyrosine phosphoprotein enrichment with MS-based quantitative proteomics technology to globally identify genistein-regulated tyrosine phosphoproteins aiming to depict genistein-inhibited phosphotyrosine cascades. Our experiments resulted in the identification of 213 phosphotyrosine sites on 181 genistein-regulated proteins. Many identified phosphoproteins, including nine protein kinases, eight receptors, five protein phosphatases, seven transcriptical regulators and four signal adaptors, were novel inhibitory effectors with no previously known function in the anti-cancer mechanism of genistein. Functional analysis suggested that genistein-regulated protein tyrosine phosphorylation mainly by inhibiting the activity of tyrosine kinase EGFR, PDGFR, insulin receptor, Abl, Fgr, Itk, Fyn and Src. Core signaling molecules inhibited by genistein can be functionally categorized into the canonial Receptor-MAPK or Receptor-PI3K/AKT cascades. The method used here may be suitable for the identification of inhibitory effectors and tyrosine kinases regulated by anti-cancer drugs.
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Affiliation(s)
- Guang-Rong Yan
- Institute of Life and Health Engineering, and National Engineering and Research Center for Genetic Medicine, Jinan University, Guangzhou, P R China
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