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Stangl S, Tei L, De Rose F, Reder S, Martinelli J, Sievert W, Shevtsov M, Öllinger R, Rad R, Schwaiger M, D'Alessandria C, Multhoff G. Preclinical Evaluation of the Hsp70 Peptide Tracer TPP-PEG 24-DFO[ 89Zr] for Tumor-Specific PET/CT Imaging. Cancer Res 2018; 78:6268-6281. [PMID: 30228173 DOI: 10.1158/0008-5472.can-18-0707] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/04/2018] [Accepted: 09/14/2018] [Indexed: 11/16/2022]
Abstract
High precision in vivo PET/CT imaging of solid tumors improves diagnostic credibility and clinical outcome of patients. An epitope of the oligomerization domain of Hsp70 is exclusively exposed on the membrane of a large variety of tumor types, but not on normal cells, and thus provides a universal tumor-specific target. Here we developed a novel PET tracer TPP-PEG24-DFO[89Zr] based on the tumor cell-penetrating peptide probe TPP, which specifically recognizes membrane Hsp70 (mHsp70) on tumor cells. The implemented PEG24 moiety supported tracer stability and improved biodistribution characteristics in vivo The K d of the tracer ranged in the low nanomolar range (18.9 ± 11.3 nmol/L). Fluorescein isothiocyanate (FITC)-labeled derivatives TPP-[FITC] and TPP-PEG24-[FITC] revealed comparable and specific binding to mHsp70-positive 4T1, 4T1+, a derivative of the 4T1 cell line sorted for high Hsp70 expression, and CT26 tumor cells, but not to mHsp70-negative normal fibroblasts. The rapid internalization kinetics of mHsp70 into the cytosol and the favorable biodistribution of the peptide-based tracer TPP-PEG24-DFO[89Zr] in vivo enabled a tumor-specific accumulation with a high tumor-to-background contrast and renal body clearance. The tumor-specific enrichment of the tracer in 4T1+ (6.2 ± 1.1%ID/g), 4T1 (4.3 ± 0.7%ID/g), and CT26 (2.6 ± 0.6%ID/g) mouse tumors with very high, high, and intermediate mHsp70 densities, respectively, reflected mHsp70 expression profiles of the different tumor types, whereas benign mHsp70-negative fibroblastic hyperplasia showed no tracer accumulation (0.2 ± 0.03%ID/g). The ability of our chemically optimized peptide-based tracer TPP-PEG24-DFO[89Zr] to detect mHsp70 in vivo suggests its broad applicability in targeting and imaging with high specificity for any tumor type that exhibits surface expression of Hsp70.Significance: A novel peptide-based PET tracer against the oligomerization domain of Hsp70 has potential for universal tumor-specific imaging in vivo across many tumor type. Cancer Res; 78(21); 6268-81. ©2018 AACR.
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Affiliation(s)
- Stefan Stangl
- Radiation Immuno Oncology Group, Center for Translational Cancer Research (TranslaTUM), Campus Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany
| | - Lorenzo Tei
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Alessandria, Italy
| | - Francesco De Rose
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany
| | - Sybille Reder
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany
| | - Jonathan Martinelli
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Alessandria, Italy
| | - Wolfgang Sievert
- Radiation Immuno Oncology Group, Center for Translational Cancer Research (TranslaTUM), Campus Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany
| | - Maxim Shevtsov
- Radiation Immuno Oncology Group, Center for Translational Cancer Research (TranslaTUM), Campus Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany.,Institute of Cytology of the Russian Academy of Sciences (RAS), St. Petersburg, Russia.,Pavlov First Saint Petersburg State Medical University, St. Petersburg, Russia
| | - Rupert Öllinger
- Medical Department II, Translational Gastroenterological Oncology, Centre for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Roland Rad
- Medical Department II, Translational Gastroenterological Oncology, Centre for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Markus Schwaiger
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany
| | - Calogero D'Alessandria
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany
| | - Gabriele Multhoff
- Radiation Immuno Oncology Group, Center for Translational Cancer Research (TranslaTUM), Campus Klinikum rechts der Isar, Technische Universität München (TUM), Munich, Germany.
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Önay Uçar E, Şengelen A, Mertoğlu E, Pekmez M, Arda N. Suppression of HSP70 Expression by Quercetin and Its Therapeutic Potential Against Cancer. HSP70 IN HUMAN DISEASES AND DISORDERS 2018. [DOI: 10.1007/978-3-319-89551-2_19] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Zhe Y, Li Y, Liu D, Su DM, Liu JG, Li HY. Extracellular HSP70-peptide complexes promote the proliferation of hepatocellular carcinoma cells via TLR2/4/JNK1/2MAPK pathway. Tumour Biol 2016; 37:13951-13959. [DOI: 10.1007/s13277-016-5189-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 07/13/2016] [Indexed: 01/28/2023] Open
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Wang Y, Wang X, Ferrone CR, Schwab JH, Ferrone S. Intracellular antigens as targets for antibody based immunotherapy of malignant diseases. Mol Oncol 2015; 9:1982-93. [PMID: 26597109 DOI: 10.1016/j.molonc.2015.10.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 10/19/2015] [Accepted: 10/20/2015] [Indexed: 12/13/2022] Open
Abstract
This review discusses the potential use of intracellular tumor antigens as targets of antibody-based immunotherapy for the treatment of solid tumors. In addition, it describes the characteristics of the intracellular tumor antigens targeted with antibodies which have been described in the literature and have been identified in the authors' laboratory. Finally, the mechanism underlying the trafficking of the intracellular tumor antigens to the plasma membrane of tumor cells are reviewed.
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Affiliation(s)
- Yangyang Wang
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States
| | - Xinhui Wang
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States
| | - Cristina R Ferrone
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States
| | - Joseph H Schwab
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States
| | - Soldano Ferrone
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States; Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States.
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Stangl S, Varga J, Freysoldt B, Trajkovic-Arsic M, Siveke JT, Greten FR, Ntziachristos V, Multhoff G. Selective in vivo imaging of syngeneic, spontaneous, and xenograft tumors using a novel tumor cell-specific hsp70 peptide-based probe. Cancer Res 2014; 74:6903-12. [PMID: 25300920 DOI: 10.1158/0008-5472.can-14-0413] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although in vivo targeting of tumors using fluorescently labeled probes has greatly gained in importance over the last few years, most of the clinically applied reagents lack tumor cell specificity. Our novel tumor cell-penetrating peptide-based probe (TPP) recognizes an epitope of Hsp70 that is exclusively present on the cell surface of a broad variety of human and mouse tumors and metastases, but not on normal tissues. Because of the rapid turnover rate of membrane Hsp70, fluorescently labeled TPP is continuously internalized into syngeneic, spontaneous, chemically/genetically induced and xenograft tumors following intravenous administration, thereby enabling site-specific labeling of primary tumors and metastases. In contrast with the commercially available nonpeptide small molecule αvβ3-integrin antagonist IntegriSense, TPP exhibits a significantly higher tumor-to-background contrast and stronger tumor-specific signal intensity in all tested tumor models. Moreover, in contrast with IntegriSense, TPP reliably differentiates between tumor cells and cells of the tumor microenvironment, such as tumor-associated macrophages and fibroblasts, which were found to be membrane-Hsp70 negative. Therefore, TPP provides a useful tool for multimodal imaging of tumors and metastases that might help to improve our understanding of tumorigenesis and allow the establishment of improved diagnostic procedures and more accurate therapeutic monitoring. TPP might also be a promising platform for tumor-specific drug delivery and other Hsp70-based targeted therapies.
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Affiliation(s)
- Stefan Stangl
- Department of Radiation Oncology, Klinikum rechts der Isar, TU München and CCG - "Innate Immunity in Tumor Biology", Helmholtz Zentrum München (HMGU), Munich, Germany
| | - Julia Varga
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt/Main, Germany
| | - Bianca Freysoldt
- Department of Radiation Oncology, Klinikum rechts der Isar, TU München and CCG - "Innate Immunity in Tumor Biology", Helmholtz Zentrum München (HMGU), Munich, Germany
| | | | - Jens T Siveke
- Department of Medicine II, Klinikum rechts der Isar, TU München, Munich, Germany
| | - Florian R Greten
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt/Main, Germany
| | - Vasilis Ntziachristos
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (HMGU), Munich, Germany
| | - Gabriele Multhoff
- Department of Radiation Oncology, Klinikum rechts der Isar, TU München and CCG - "Innate Immunity in Tumor Biology", Helmholtz Zentrum München (HMGU), Munich, Germany.
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Li Y, Zhai Z, Liu D, Zhong X, Meng X, Yang Q, Liu J, Li H. CD105 promotes hepatocarcinoma cell invasion and metastasis through VEGF. Tumour Biol 2014; 36:737-45. [DOI: 10.1007/s13277-014-2686-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 09/26/2014] [Indexed: 01/08/2023] Open
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Li W, Zhong X, Zhang L, Wang Y, Wang T. Heat Shock Protein 70 Expression is Increased in the Liver of Neonatal Intrauterine Growth Retardation Piglets. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 25:1096-101. [PMID: 25049668 PMCID: PMC4092995 DOI: 10.5713/ajas.2012.12058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 05/24/2012] [Accepted: 04/26/2012] [Indexed: 12/19/2022]
Abstract
Intrauterine growth retardation (IUGR) leads to the dysfunction in digestive system, as well as the alteration in the expression of some functional proteins. Heat shock protein 70 (Hsp70) could be induced by various stress factors, but whether Hsp70 expression is changed in neonatal IUGR infants has not been demonstrated. This study was conducted to explore the expression of Hsp70 in the liver by using the IUGR piglet model. Liver and plasma samples were obtained from IUGR and normal birth weight (NBW) piglets at birth. The neonatal IUGR piglets had significantly lower liver weight than their counterparts. The activities of aspartate aminotransferase and alanine aminotransferase in serum were enhanced significantly in IUGR indicating liver dysfunction. The activities of superoxide dismutase (p<0.01), glutathione peroxidase (p<0.01) and catalase (p>0.05) were lower and the level of malondialdehybe was higher (p<0.05) in IUGR liver compared with in NBW. According to the results of histological tests, fatty hepatic infiltrates and cytoplasmic vacuolization were present in the liver of IUGR piglets, but not in NBW liver. The expression of Hsp70 protein was significantly higher (p<0.05) in IUGR piglet liver than in NBW. Similar to where the hepatic injuries were observed, location of Hsp70 was mostly in the midzonal hepatic lobule indicating that oxidative stress might be responsible for the increased expression of Hsp70.
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Tan GS, Lim KH, Tan HT, Khoo ML, Tan SH, Toh HC, Ching Ming Chung M. Novel proteomic biomarker panel for prediction of aggressive metastatic hepatocellular carcinoma relapse in surgically resectable patients. J Proteome Res 2014; 13:4833-46. [PMID: 24946162 DOI: 10.1021/pr500229n] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The natural course of early HCC is unknown, and its progression to intermediate and advanced HCC can be diverse. Some early stage HCC patients enjoy prolonged disease-free survival, whereas others suffer aggressive relapse to stage IV metastatic cancer within a year. Comparative proteomics of HCC tumor tissues was carried out using 2D-DIGE and MALDI-TOF/TOF MS to identify proteins that can distinguish these two groups of stage I HCC patients. Twelve out of 148 differentially regulated protein spots were found to differ by approximately 2-fold for the relapse versus nonrelapse patient tissues. Four proteins, namely, heat shock 70 kDa protein 1, argininosuccinate synthase, isoform 2 of UTP-glucose-1-phosphate uridylyltransferase, and transketolase, were shown to have the potential to differentiate metastatic relapse (MR) from nonrelapse (NR) HCC patients after validation by western blotting and immunohistochemical assays. Subsequent TMA analysis revealed a three marker panel of HSP70, ASS1, and UGP2 to be statistically significant in stratifying the two groups of HCC patients. This combination panel achieved high levels of sensitivity and specificity, which has potential for clinical use in identifying HCC tumors prone to MR. This stratification will allow development of clinical management, including close follow-up and possibly treatment options, in the near future.
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Affiliation(s)
- Gek San Tan
- Department of Biochemistry, National University of Singapore , 8 Medical Drive, Singapore 117597
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Li H, Li Y, Liu D, Sun H, Su D, Yang F, Liu J. Extracellular HSP70/HSP70-PCs promote epithelial-mesenchymal transition of hepatocarcinoma cells. PLoS One 2013; 8:e84759. [PMID: 24386414 PMCID: PMC3874008 DOI: 10.1371/journal.pone.0084759] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 11/19/2013] [Indexed: 01/10/2023] Open
Abstract
Background Extracellular heat shock protein 70 and peptide complexes (eHSP70/HSP70-PCs) regulate a variety of biological behaviors in tumor cells. Whether eHSP70/HSP70-PCs are involved in the epithelial-mesenchymal transition (EMT) of tumor cells remains unclear. Aims To determine the effects of eHSP70/HSP70-PCs on EMT of hepatocarcinoma cells. Methods The expressions of E-cadherin, HSP70, α-smooth muscle actin protein (α-SMA) and p-p38 were detected immunohistochemically in liver cancer samples. Immunofluorescence, western blotting and real-time RT-PCR methods were used to analyze the effects of eHSP70/HSP70-PCs on the expressions of E-cadherin, α-SMA and p38/MAPK in vivo. Results HSP70, E-cadherin, α-SMA and p-p38 were elevated in hepatocellular carcinoma tissues. The expression of HSP70 was positively correlated with malignant differentiated liver carcinoma. The expressions of HSP70, α-SMA and p-p38 correlated with recurrence-free survival after resection. eHSP70/HSP70-PCs significantly promoted the expressions of α-SMA and p-p38 and reduced the expressions of E-cadherin in vivo. The effect was inhibited by SB203580. Conclusion The expressions of HSP70, E-cadherin, α-SMA and p-p38 may represent indicators of malignant potential and could discriminate the malignant degree of liver cancer. eHSP70/HSP70-PCs play an important role in the EMT of hepatocellular carcinoma via the p38/MAPK pathway.
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Affiliation(s)
- Hangyu Li
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang, China
| | - Yan Li
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang, China
| | - Dan Liu
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang, China
| | - Hongzhi Sun
- Department of General Surgery, First Hospital Affiliated to Liaoning Medical College, Jinzhou, China
| | - Dongming Su
- Center of Metabolic Disease Research, Nanjing Medical University, Nanjing, China
| | - Fuquan Yang
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang, China
| | - Jingang Liu
- Department of General Surgery, Shengjing Hospital Affiliated to China Medical University, Shenyang, China
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Hsp70 is a novel posttranscriptional regulator of gene expression that binds and stabilizes selected mRNAs containing AU-rich elements. Mol Cell Biol 2012; 33:71-84. [PMID: 23109422 DOI: 10.1128/mcb.01275-12] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The AU-rich elements (AREs) encoded within many mRNA 3' untranslated regions (3'UTRs) are targets for factors that control transcript longevity and translational efficiency. Hsp70, best known as a protein chaperone with well-defined peptide-refolding properties, is known to interact with ARE-like RNA substrates in vitro. Here, we show that cofactor-free preparations of Hsp70 form direct, high-affinity complexes with ARE substrates based on specific recognition of U-rich sequences by both the ATP- and peptide-binding domains. Suppressing Hsp70 in HeLa cells destabilized an ARE reporter mRNA, indicating a novel ARE-directed mRNA-stabilizing role for this protein. Hsp70 also bound and stabilized endogenous ARE-containing mRNAs encoding vascular endothelial growth factor (VEGF) and Cox-2, which involved a mechanism that was unaffected by an inhibitor of its protein chaperone function. Hsp70 recognition and stabilization of VEGF mRNA was mediated by an ARE-like sequence in the proximal 3'UTR. Finally, stabilization of VEGF mRNA coincided with the accumulation of Hsp70 protein in HL60 promyelocytic leukemia cells recovering from acute thermal stress. We propose that the binding and stabilization of selected ARE-containing mRNAs may contribute to the cytoprotective effects of Hsp70 following cellular stress but may also provide a novel mechanism linking constitutively elevated Hsp70 expression to the development of aggressive neoplastic phenotypes.
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The clinicopathological significance of heat shock protein 70 and glutamine synthetase expression in hepatocellular carcinoma. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2011; 18:544-50. [DOI: 10.1007/s00534-010-0367-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Tuzcu M, Sahin N, Ozercan I, Seren S, Sahin K, Kucuk O. The effects of selenium supplementation on the spontaneously occurring fibroid tumors of oviduct, 8-hydroxy-2'-deoxyguanosine levels, and heat shock protein 70 response in Japanese quail. Nutr Cancer 2010; 62:495-500. [PMID: 20432170 DOI: 10.1080/01635580903441303] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Oxidative stress is known to be an important contributing factor in many chronic diseases. Spontaneously occurring benign oviduct leiomyomas are common tumors of the Japanese quail (Coturnix coturnix japonica), which makes it a good animal model for screening potential agents for testing in the prevention and treatment of human myoma uteri. Since dietary intake of selenium has been associated with a reduced risk of a variety of human cancers, we investigated the effects of selenium supplementation on the development of leiomyomas in the Japanese quail. Potential mechanisms of action of selenium include its antioxidant properties and modulation of heat shock protein 70 (Hsp70); therefore, we measured levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG), 8-isoprostane levels, and Hsp70 expression in tissue specimens obtained from the quails. One hundred and eighty quails (8 mo old) were assigned to 3 treatment groups consisting of 60 birds in each group. Birds were fed either a basal diet containing 0.048 mg Se per kg or the basal diet supplemented with 0.2 mg or 0.4 mg of selenium (Selenomax, yeast-bound l-selenomethionine, 60%) per kg of diet. The animals were sacrificed after 250 days, and the tumors were identified. Selenium supplementation did not affect the number of leiomyomas as compared to control subjects (P > 0.05). However, the tumors in selenium fed birds were smaller than those found in control birds (P = 0.01). Serum Se increased (P = 0.01), whereas MDA and 8-isoprostane, 8-OHdG concentrations decreased (P = 0.01) with selenium supplementation (P = 0.01). Selenium supplementation decreased Hsp70 in the tissue of birds. The results indicate that dietary supplementation with selenium reduces the size of spontaneously occurring leiomyoma of the oviduct in the Japanese quail.
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Affiliation(s)
- Mehmet Tuzcu
- Faculty of Science, Firat University, Elazig, Turkey
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Sahin K, Akdemir F, Tuzcu M, Sahin N, Onderci M, Ozercan R, Ilhan N, Kilic E, Seren S, Kucuk O. Genistein suppresses spontaneous oviduct tumorigenesis in quail. Nutr Cancer 2010; 61:799-806. [PMID: 20155619 DOI: 10.1080/01635580903285163] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Spontaneous leiomyomas of the oviduct are common tumors of the Japanese quail (Coturnix coturnix japonica) and laying hens. This makes it a good animal model for screening potential agents for testing in the prevention and treatment of human myoma uteri. Genistein has been shown to inhibit the growth of various cancer cells. We investigated the effects of genistein supplementation on the development of fibroid tumors in the oviduct, serum oxidative stress markers [malondialdehyde (MDA), 8-isoprostane, 4-hydroxyalkenal (HAE), 8-hydroxy-2' -deoxyguanosine (8-OHdG) levels], soy isoflavone levels, and tissue biomarkers [Connexin 43 (Cx43), Bcl-2, and Bax and heat shock protein 70 (Hsp70) expression] in Japanese quail. One hundred and fifty quail (12 mo old) were assigned to 3 experimental groups as 5 replicates of pens containing 10 birds in each. Birds were fed either a basal diet or the basal diet supplemented with 400 mg or 800 mg of genistein/kg of diet. The animals were sacrificed after 315 days, and the tumors were identified. Genistein supplementation significantly decreased the incidence of fibroid tumors as compared to control birds (P = 0.04). The tumors in genistein-fed birds were smaller than those found in control birds (P = 0.02). Serum MDA, 8-isoprostane, and HAE levels were lower in treatment groups than in control group (MDA: 2.01 vs. 0.82; 8-isoprostane: 135 vs. 101; HAE: 1.45 vs. 0.73; P <or= 0.01). The concentrations of serum 8-OHdG, which is a marker of oxidative damage, in the groups were 27.5, 22.4, and 21.3 ng/ml, respectively (P = 0.05). The expression of cell cycle regulatory proteins, Bcl-2, was 4.18 and 4.61 in the genistein groups and 6.21 in the control group, and the expression of Bax was 10.93 and 16.78 in the genistein groups and 7.60 in the control group (P < 0.001 for Bax). Cx43 level was 2.56 and 2.40 in the genistein groups compared with 5.15 in the control group. None of the differences in the Cx43 and Bcl-2 of the groups were significant. The expression of heat shock proteins, Hsp60 and Hsp70, were not different between groups, although Hsp70 level of the genistein groups (19.73) was lower than the control group (27.8). The results indicate that dietary supplementation of genistein reduces the incidence and size of spontaneously occurring leiomyoma of the oviduct in the Japanese quail. Clinical trials should be conducted to investigate the efficacy of genistein supplementation in the prevention and treatment of uterine leiomyoma in humans.
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Sahin N, Tuzcu M, Ozercan I, Sahin K, Prasad AS, Kucuk O. Zinc picolinate in the prevention of leiomyoma in Japanese quail. J Med Food 2010; 12:1368-74. [PMID: 20041795 DOI: 10.1089/jmf.2008.0287] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Epidemiologic studies suggest that zinc deficiency may be associated with increased risk of cancer. We investigated the effects of zinc picolinate supplementation on the development of leiomyomas, malondialdehyde (MDA), 8-isoprostane, 4-hydroxyalkenal (HAE), and 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels, and heat shock protein 70 (Hsp70) expression in Japanese quails. One hundred fifty quails (6 months old) were assigned to three treatment groups consisting of 50 birds in each group. Birds were fed either a basal diet or the basal diet supplemented with 30 mg or 60 mg of zinc/kg of diet. The animals were sacrificed after 350 days, and the tumors were identified. Zinc picolinate supplementation did not affect the number of leiomyomas compared to control birds (P > .05). However, the tumors in zinc-fed birds were smaller than those found in control birds (P = .01) Serum MDA, 8-isoprostane, and HAE levels were lower in the treatment groups than in the control group: MDA, 1.95 versus 0.93 micromol/L; 8-isoprostane, 108 versus 85 pg/mL; HAE, 1.55 versus 0.96 micromol/L (P = .01 for all three parameters). The concentrations of serum 8-OHdG, which is a marker of oxidative damage, in the groups were 28.5, 23.6, and 20.1 ng/mL, respectively (P = .01). Hsp70 expression was significantly decreased in zinc-treated birds (P < .01). The results indicate that dietary zinc picolinate supplementation reduces the growth of spontaneously occurring leiomyomas of the oviduct in the Japanese quail. Clinical trials should be conducted to investigate the efficacy of zinc supplementation in the prevention and treatment of uterine leiomyoma in humans.
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Affiliation(s)
- Nurhan Sahin
- Department of Animal Nutrition, Faculty of Veterinary Science, Firat University, Elazig, Turkey
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