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Szabó Z, Dezső B, Fodor K, Szegedi K, Flaskó T, Szabó E, Oláh G, Sipos É, Dobos N, Gardi J, Schally AV, Halmos G. Expression of Luteinizing Hormone-Releasing Hormone (LHRH) and Type-I LHRH Receptor in Transitional Cell Carcinoma Type of Human Bladder Cancer. Molecules 2021; 26:molecules26051253. [PMID: 33652606 PMCID: PMC7956722 DOI: 10.3390/molecules26051253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/18/2021] [Accepted: 02/23/2021] [Indexed: 12/09/2022] Open
Abstract
Bladder cancer (BC) is the tenth most frequently detected cancer in both sexes. Type-I luteinizing hormone-releasing hormone (LHRH) receptor (LHRH-R-I) is expressed not only in the pituitary, but also in several types of cancer disease. There are few data about LHRH-R-I expression in human BC. This study aimed to investigate the expression of LHRH and LHRH-R-I in the transitional cell carcinoma (TCC) type of human BC. RNA was extracted from 24 human bladder tumor specimens and three BC cell lines. RT-PCR was performed to detect mRNA for LHRH and LHRH-R-I. The protein of LHRH-R-I was further studied by immunohistochemistry (IHC), ligand competition assay, and Western Blot. PCR products of LHRH were found in 19 of 24 (79%) specimens and mRNA of LHRH-R-I was detected in 20 of 24 specimens (83%). Positive immunostaining for LHRH-R-I with different expression intensity was found in all samples examined, showing negative correlation with TCC grade. Radioligand binding studies also showed the presence of specific LHRH-R-I and high affinity binding of LHRH analogs. The high incidence of LHRH-R in BC suggests that it could serve as a molecular target for therapy of human BC with cytotoxic LHRH analogs or modern powerful antagonistic analogs of LHRH.
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Affiliation(s)
- Zsuzsanna Szabó
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (Z.S.); (K.F.); (E.S.); (G.O.); (É.S.); (N.D.)
| | - Balázs Dezső
- Department of Pathology, Clinical Center and Section of Dental Microbiology and Oral Pathology, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary;
| | - Klára Fodor
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (Z.S.); (K.F.); (E.S.); (G.O.); (É.S.); (N.D.)
| | - Krisztián Szegedi
- Department of Urology, Clinical Center, University of Debrecen, 4032 Debrecen, Hungary; (K.S.); (T.F.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, 4032 Debrecen, Hungary
| | - Tibor Flaskó
- Department of Urology, Clinical Center, University of Debrecen, 4032 Debrecen, Hungary; (K.S.); (T.F.)
| | - Erzsébet Szabó
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (Z.S.); (K.F.); (E.S.); (G.O.); (É.S.); (N.D.)
| | - Gábor Oláh
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (Z.S.); (K.F.); (E.S.); (G.O.); (É.S.); (N.D.)
| | - Éva Sipos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (Z.S.); (K.F.); (E.S.); (G.O.); (É.S.); (N.D.)
| | - Nikoletta Dobos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (Z.S.); (K.F.); (E.S.); (G.O.); (É.S.); (N.D.)
| | - János Gardi
- Department of Medicine, Faculty of Medicine, University of Szeged, 6720 Szeged, Hungary;
| | - Andrew V. Schally
- Veterans Affairs Medical Center, Endocrine, Polypeptide and Cancer Institute, Miami, FL 33101, USA;
- Sylvester Comprehensive Cancer Center, Department of Medicine, Department of Pathology, Divisions of Hematology Oncology and Endocrinology, Miller School of Medicine, University of Miami, Miami, FL 33101, USA
| | - Gábor Halmos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (Z.S.); (K.F.); (E.S.); (G.O.); (É.S.); (N.D.)
- Veterans Affairs Medical Center, Endocrine, Polypeptide and Cancer Institute, Miami, FL 33101, USA;
- Correspondence: ; Tel.: +0036-52-411-717 (ext. 55292)
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Huzian O, Baka J, Csakvari E, Dobos N, Leranth C, Siklos L, Duman RS, Farkas T, Hajszan T. Stress Resilience is Associated with Hippocampal Synaptoprotection in the Female Rat Learned Helplessness Paradigm. Neuroscience 2021; 459:85-103. [PMID: 33524494 DOI: 10.1016/j.neuroscience.2021.01.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 01/11/2021] [Accepted: 01/21/2021] [Indexed: 12/28/2022]
Abstract
The synaptogenic hypothesis of major depressive disorder implies that preventing the onset of depressive-like behavior also prevents the loss of hippocampal spine synapses. By applying the psychoactive drugs, diazepam and fluoxetine, we investigated whether blocking the development of helpless behavior by promoting stress resilience in the rat learned helplessness paradigm is associated with a synaptoprotective action in the hippocampus. Adult ovariectomized and intact female Sprague-Dawley rats (n = 297) were treated with either diazepam, fluoxetine, or vehicle, exposed to inescapable footshocks or sham stress, and tested in an active escape task to assess helpless behavior. Escape-evoked corticosterone secretion, as well as remodeling of hippocampal spine synapses at a timepoint representing the onset of escape testing were also analyzed. In ovariectomized females, treatment with diazepam prior to stress exposure prevented helpless behavior, blocked the loss of hippocampal spine synapses, and muted the corticosterone surge evoked by escape testing. Although fluoxetine stimulated escape performance and hippocampal synaptogenesis under non-stressed conditions, almost all responses to fluoxetine were abolished following exposure to inescapable stress. Only a much higher dose of fluoxetine was capable of partly reproducing the strong protective actions of diazepam. Importantly, these protective actions were retained in the presence of ovarian hormones. Our findings indicate that stress resilience is associated with the preservation of spine synapses in the hippocampus, raising the possibility that, besides synaptogenesis, hippocampal synaptoprotection is also implicated in antidepressant therapy.
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Affiliation(s)
- Orsolya Huzian
- Institute of Biophysics, Biological Research Center, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Judith Baka
- Institute of Biophysics, Biological Research Center, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Eszter Csakvari
- Institute of Biophysics, Biological Research Center, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Nikoletta Dobos
- Institute of Biophysics, Biological Research Center, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Csaba Leranth
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States; Department of Neuroscience, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States
| | - Laszlo Siklos
- Institute of Biophysics, Biological Research Center, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Ronald S Duman
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, New Haven, CT 06508, United States; Department of Pharmacology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520, United States
| | - Tamas Farkas
- Department of Physiology, Anatomy, and Neuroscience, University of Szeged Faculty of Science and Informatics, Kozep Fasor 52, 6726 Szeged, Hungary
| | - Tibor Hajszan
- Institute of Biophysics, Biological Research Center, Temesvari Krt 62, 6726 Szeged, Hungary; Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States.
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3
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Fodor K, Sipos É, Dobos N, Nagy J, Steiber Z, Méhes G, Dull K, Székvölgyi L, Schally AV, Halmos G. Correlation between the Expression of Angiogenic Factors and Stem Cell Markers in Human Uveal Melanoma. Life (Basel) 2020; 10:life10120310. [PMID: 33255843 PMCID: PMC7760175 DOI: 10.3390/life10120310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 12/17/2022] Open
Abstract
Uveal melanoma (UM) is the most common malignant tumor of the eye with extremely high metastatic potential. UM tumor cells can disseminate only hematogenously, thus, angiogenic signals have a particular role in the prognosis of the disease. Although the presence of cancer stem cells (CSCs) in densely vascularized UMs has been reported previously, their role in the process of hematogenous spread of UM has not been studied. In this study, we investigated the regulation of angiogenesis in UM in correlation with the presence of CSCs. Seventy UM samples were collected to analyze the expression of CSC markers and angiogenic factors. The expression of CSC markers was studied by RT-PCR, Western blotting techniques and IHC-TMA technique. RT-PCR showed high expression of CSC markers, particularly nestin, FZD6 and SOX10 and somewhat lower expression of NGFR. The protein expression of FZD6, HIF-1α and VEGFA was further evaluated in 52 UM samples by the IHC-TMA technique. We report here for the first time a significant correlation between FZD6 and VEGFA expression in UM samples. The observed correlation between FZD6 and VEGFA suggests the presence of CSCs in UM that are associated with the vascularization process.
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Affiliation(s)
- Klára Fodor
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (K.F.); (É.S.); (N.D.)
| | - Éva Sipos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (K.F.); (É.S.); (N.D.)
| | - Nikoletta Dobos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (K.F.); (É.S.); (N.D.)
| | - János Nagy
- Clinical Center, Department of Oncology, University of Debrecen, 4032 Debrecen, Hungary;
| | - Zita Steiber
- Clinical Center, Department of Ophthalmology, University of Debrecen, 4032 Debrecen, Hungary;
| | - Gábor Méhes
- Department of Pathology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (G.M.); (K.D.)
| | - Kata Dull
- Department of Pathology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (G.M.); (K.D.)
| | - Lóránt Székvölgyi
- MTA-DE Momentum, Genome Architecture and Recombination Research Group, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary;
| | - Andrew V. Schally
- Veterans Affairs Medical Center, Endocrine, Polypeptide and Cancer Institute, Miami, FL 33101, USA;
- Sylvester Comprehensive Cancer Center, Department of Medicine, Department of Pathology, Divisions of Hematology Oncology and Endocrinology, Miller School of Medicine, University of Miami, Miami, FL 33101, USA
| | - Gábor Halmos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary; (K.F.); (É.S.); (N.D.)
- Veterans Affairs Medical Center, Endocrine, Polypeptide and Cancer Institute, Miami, FL 33101, USA;
- Correspondence: ; Tel.: +36-52-255-292
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Fodor K, Dobos N, Schally A, Steiber Z, Olah G, Sipos E, Szekvolgyi L, Halmos G. The targeted LHRH analog AEZS-108 alters expression of genes related to angiogenesis and development of metastasis in uveal melanoma. Oncotarget 2020; 11:175-187. [PMID: 32010430 PMCID: PMC6968782 DOI: 10.18632/oncotarget.27431] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 12/29/2019] [Indexed: 02/06/2023] Open
Abstract
Uveal melanoma (UM) is the most common malignant tumor of the eye. Recently, we have established that 46% of UM specimens express LHRH receptors. This finding supports the idea of a LHRH receptor-targeted therapy of UM patients. Cytotoxic analog of LHRH, AEZS-108 exhibits effective anti-cancer activity in LHRH-receptor positive cancers. AEZS-108 is a hybrid molecule, composed of a synthetic peptide carrier and the cytotoxic doxorubicin (DOX). In the present study, we investigated AEZS-108 induced cytotoxicity and the altered mRNA expression profile of regulatory factors related to angiogenesis and metastasis in LHRH receptor positive OCM3 cells. Our results show that AEZS-108 upregulates the expression of MASPIN/SERPINB5 tumor suppressor gene, which is downregulated in normal uvea and UM specimens independently from the LHRH receptor-ligand interaction. AEZS-108 also substantially downregulates hypoxia-inducible factor 1 alpha (HIF1A) expression. In order to investigate the mechanism of the induction of MASPIN by AEZS-108, OCM3 cells were treated with free DOX, D-Lys6 LHRH analog, or AEZS-108. qRT- PCR analysis revealed in OCM3 cells that AEZS-108 is a more potent inducer of MASPIN than free DOX. In conclusion, we show for the first time that AEZS-108 has a major impact in the regulation of angiogenesis thus plays a potential role in tumor suppression. Taken together, our results support the development of novel therapeutic strategies for UM focusing on LHRH receptors.
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Affiliation(s)
- Klara Fodor
- University of Debrecen, Department of Biopharmacy, Debrecen, Hungary
| | - Nikoletta Dobos
- University of Debrecen, Department of Biopharmacy, Debrecen, Hungary
| | - Andrew Schally
- Veterans Affairs Medical Center, Endocrine, Polypeptide and Cancer Insitute, Miami, FL, USA.,University of Miami, Miller School of Medicine, Department of Pathology and Department of Medicine, Divisions of Oncology and Endocrinology, Sylvester Comprehensive Center, Miami, FL, USA
| | - Zita Steiber
- University of Debrecen, Department of Ophthalmology, Debrecen, Hungary
| | - Gabor Olah
- University of Debrecen, Department of Biopharmacy, Debrecen, Hungary
| | - Eva Sipos
- University of Debrecen, Department of Biopharmacy, Debrecen, Hungary
| | - Lorant Szekvolgyi
- University of Debrecen, Faculty of Medicine, Department of Biochemistry and Molecular Biology, MTA-DE Momentum, Genome Architecture and Recombination Research Group, Debrecen, Hungary
| | - Gabor Halmos
- University of Debrecen, Department of Biopharmacy, Debrecen, Hungary.,Veterans Affairs Medical Center, Endocrine, Polypeptide and Cancer Insitute, Miami, FL, USA
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5
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Oláh G, Dobos N, Vámosi G, Szabó Z, Sipos É, Fodor K, Harda K, Schally AV, Halmos G. Experimental therapy of doxorubicin resistant human uveal melanoma with targeted cytotoxic luteinizing hormone-releasing hormone analog (AN-152). Eur J Pharm Sci 2018; 123:371-376. [PMID: 30076951 DOI: 10.1016/j.ejps.2018.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND Cytotoxic analogs of LHRH (luteinizing hormone-releasing hormone) can be successfully used for the treatment of hormone-dependent cancers such as prostatic, ovarian, endometrial, but our knowledge about their effect on hormone-independent cancers such as human uveal melanoma (UM) is limited. Previously, we have demonstrated that 46% of UM express full-length LHRH receptors. This finding has led us to further examine the mechanism of action of LHRH receptor based targeted therapies in this malignancy. AIMS In the present study we investigated the cellular uptake of doxorubicin (DOX) and cytotoxic LHRH analog AN-152 (AEZS-108, zoptarelin doxorubicin) on human UM cell lines (OCM3) and its DOX resistant form OCM3DOX320 by confocal laser scanning microscopy. The LHRH receptor expression was characterized by RT-PCR and immunocytochemistry. RESULTS We were able to establish a new, stable and DOX resistant human UM cell line OCM3DOX320. Our results demonstrated the expression of splice variants and isoforms of receptor for LHRH in OCM3 UM cell line and its doxorubicin resistant form OCM3DOX320. It has been revealed by MTT assay that AN-152 inhibited cell proliferation in a dose dependent manner in OCM3DOX320 cells. Furthermore, receptor-mediated uptake of AN-152 was demonstrated using confocal laser scanning microscopy in both cell line. CONCLUSIONS Our results suggest that the antiproliferative effect of AN-152 can be detected even if only LHRH receptor isoforms are expressed. Our study also demonstrates the LHRH receptor-mediated uptake of AN-152 in DOX resistant OCM3DOX320 cells. Our experiments provide new insights into a potential targeted therapy of UM and give further details about the accumulation of AN-152 in hormone-independent DOX-resistant cells expressing splice variants of the LHRH receptors.
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Affiliation(s)
- Gábor Oláh
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Nikoletta Dobos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - György Vámosi
- Department of Biophysics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsuzsanna Szabó
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Éva Sipos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Klára Fodor
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Kristóf Harda
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Andrew V Schally
- Endocrine, Polypeptide and Cancer Institute, Veterans Affairs Medical Center, Miami, FL, USA; Department of Pathology, University of Miami, Miami, FL, USA; Department of Medicine, Division of Hematology-Oncology, Miller School of Medicine, University of Miami, Miami, FL, USA; Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA; Department of Medicine, Division of Endocrinology, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Gábor Halmos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary; Endocrine, Polypeptide and Cancer Institute, Veterans Affairs Medical Center, Miami, FL, USA.
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6
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Sipos E, Dobos N, Rozsa D, Fodor K, Olah G, Szabo Z, Szekvolgyi L, Schally AV, Halmos G. Characterization of luteinizing hormone-releasing hormone receptor type I (LH-RH-I) as a potential molecular target in OCM-1 and OCM-3 human uveal melanoma cell lines. Onco Targets Ther 2018; 11:933-941. [PMID: 29503568 PMCID: PMC5826244 DOI: 10.2147/ott.s148174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Introduction Uveal melanoma (UM) is the most common primary intraocular malignancy with very poor prognosis. Conventional chemotherapy only rarely prolongs the survival, therefore patients require novel treatment modalities. The discovery of specific receptors for hypothalamic hormones on cancer cells has led to the development of radiolabeled and cytotoxic hormone analogs. Materials and methods In the present study, our aim was to investigate the expression of mRNA for receptors of luteinizing hormone-releasing hormone type I (LH-RH-I) and LH-RH ligand in OCM-1 and OCM-3 human uveal melanoma cell lines. The presence and binding characteristics of LH-RH-I receptor protein was further studied by Western blot, immunocytochemistry and ligand competition assay. The expression of mRNA and protein for LH-RH-I receptors has been also studied using tumor samples originating from nude mice xenografted with OCM-1 or OCM-3 cells. Results The mRNA for LH-RH-I receptor has been detected in OCM-1 and OCM-3 cell lines and was found markedly higher in OCM-3 cells. The mRNA for LH-RH-I receptors was also observed in both UM xenograft models in vivo with higher levels in OCM-3. The presence of LH-RH-I receptor protein was found in both cell lines in vitro by immunocytochemistry and Western blot, and also in tumor tissue samples grown in nude mice by Western blot. Both human uveal melanoma models investigated showed specific high affinity receptors for LH-RH-I using ligand competition assay. The mRNA for LH-RH ligand has also been detected in OCM-1 and OCM-3 cell lines and cancer tissues. Conclusion The demonstration of the expression of LH-RH-I receptors in OCM-1 and OCM-3 human UM cell lines suggests that they could serve as potential molecular target for therapy. Our findings support the development of new therapeutic approaches based on cytotoxic LH-RH analogs or modern powerful antagonistic analogs of LH-RH targeting LH-RH-I receptors in UM.
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Affiliation(s)
- Eva Sipos
- Department of Biopharmacy, School of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Nikoletta Dobos
- Department of Biopharmacy, School of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - David Rozsa
- Department of Biopharmacy, School of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Klara Fodor
- Department of Biopharmacy, School of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Gabor Olah
- Department of Biopharmacy, School of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Zsuzsanna Szabo
- Department of Biopharmacy, School of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Lorant Szekvolgyi
- MTA-DE Momentum, Genome Architecture and Recombination Research Group, Debrecen, Hungary.,Research Centre for Molecular Medicine; Department of Biochemistry and Molecular Biology, Debrecen, Hungary
| | - Andrew V Schally
- Endocrine, Polypeptide and Cancer Institute, Veterans Affairs Medical Center, Miami, FL, USA.,Department of Pathology, Miller School of Medicine, University of Miami, Miami, FL, USA.,Department of Medicine, Divisions of Hematology-Oncology and Endocrinology, Miller School of Medicine, University of Miami, Miami, FL, USA.,Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Gabor Halmos
- Department of Biopharmacy, School of Pharmacy, University of Debrecen, Debrecen, Hungary.,Endocrine, Polypeptide and Cancer Institute, Veterans Affairs Medical Center, Miami, FL, USA
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7
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Hornyák L, Dobos N, Koncz G, Karányi Z, Páll D, Szabó Z, Halmos G, Székvölgyi L. The Role of Indoleamine-2,3-Dioxygenase in Cancer Development, Diagnostics, and Therapy. Front Immunol 2018; 9:151. [PMID: 29445380 PMCID: PMC5797779 DOI: 10.3389/fimmu.2018.00151] [Citation(s) in RCA: 221] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 01/17/2018] [Indexed: 01/03/2023] Open
Abstract
Tumors are composed of abnormally transformed cell types and tissues that differ from normal tissues in their genetic and epigenetic makeup, metabolism, and immunology. Molecular compounds that modulate the immune response against neoplasms offer promising new strategies to combat cancer. Inhibitors targeting the indoleamine-2,3-dioxygenase 1 enzyme (IDO1) represent one of the most potent therapeutic opportunities to inhibit tumor growth. Herein, we assess the biochemical role of IDO1 in tumor metabolism and immune surveillance, and review current diagnostic and therapeutic approaches that are intended to increase the effectiveness of immunotherapies against highly aggressive and difficult-to-treat IDO-expressing cancers.
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Affiliation(s)
- Lilla Hornyák
- MTA-DE Momentum Genome Architecture and Recombination Research Group, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Nikoletta Dobos
- Department of Biopharmacy, Faculty of Pharmacology, University of Debrecen, Debrecen, Hungary
| | - Gábor Koncz
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsolt Karányi
- MTA-DE Momentum Genome Architecture and Recombination Research Group, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Dénes Páll
- Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltán Szabó
- Department of Emergency Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gábor Halmos
- Department of Biopharmacy, Faculty of Pharmacology, University of Debrecen, Debrecen, Hungary
| | - Lóránt Székvölgyi
- MTA-DE Momentum Genome Architecture and Recombination Research Group, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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8
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Sipos E, Hegyi K, Treszl A, Steiber Z, Mehes G, Dobos N, Fodor K, Olah G, Szekvolgyi L, Schally AV, Halmos G. Concurrence of chromosome 3 and 4 aberrations in human uveal melanoma. Oncol Rep 2017; 37:1927-1934. [PMID: 28350068 PMCID: PMC5367339 DOI: 10.3892/or.2017.5496] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 02/10/2017] [Indexed: 12/25/2022] Open
Abstract
Uveal melanoma (UM) is the most common primary intraocular malignancy with a very poor prognosis. The most frequent chromosome aberration in UM is the monosomy of chromosome 3. Previously, we demonstrated that ~50% of UMs express type-I receptor for luteinizing hormone‑releasing hormone (LH-RH-R). The gene encoding LH-RH-R is located in chromosome 4 (location: 4q21.2); however, the occurrence of numerical aberrations of chromosome 4 have never been studied in UM. In the present study, we investigated the abnormalities of chromosome 3 and 4, and the possible correlation between them, as well as with LH-RH-R expression. Forty-six specimens of UM were obtained after enucleation. Numerical aberrations of chromosome 3 and 4 were studied by fluorescence in situ hybridization (FISH). Chromosome 4 was detected in normal biparental disomy only in 14 (30%) samples; however, 32 cases (70%) showed more than 2 signals/nucleus. Monosomy of chromosome 3 could be found in 16 (35%) samples. In 6 specimens (13%), more than 2 copies of chromosome 3 were found, while normal biparental disomy was detected in 24 (52%) samples. Statistical analysis indicated a statistically significant (p<0.05) correlation between the copy number of chromosome 3 and 4. Moreover, moderate difference was revealed in the survival rate of the UM patients with various pathological profiles. No correlation was found between chromosome aberrations and LH-RH-R expression. Our results clearly demonstrate abnormalities in chromosome 3 and 4 and the incidence of the monosomy of chromosome 3 in human UM. In summary, our results provide new incite concerning the genetic background of this tumor. Our findings could contribute to a more precise determination of the prognosis of human UM and to the development of new therapeutic approaches to this malignancy.
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Affiliation(s)
- Eva Sipos
- Department of Biopharmacy, University of Debrecen, 4032 Debrecen, Hungary
| | - Kata Hegyi
- Department of Pathology, University of Debrecen, 4032 Debrecen, Hungary
| | - Andrea Treszl
- Department of Biopharmacy, University of Debrecen, 4032 Debrecen, Hungary
| | - Zita Steiber
- Department of Ophthalmology, University of Debrecen, 4032 Debrecen, Hungary
| | - Gabor Mehes
- Department of Pathology, University of Debrecen, 4032 Debrecen, Hungary
| | - Nikoletta Dobos
- Department of Biopharmacy, University of Debrecen, 4032 Debrecen, Hungary
| | - Klara Fodor
- Department of Biopharmacy, University of Debrecen, 4032 Debrecen, Hungary
| | - Gabor Olah
- Department of Biopharmacy, University of Debrecen, 4032 Debrecen, Hungary
| | - Lorant Szekvolgyi
- MTA-DE Momentum, Genome Architecture and Recombination Research Group, Research Centre for Molecular Medicine; Department of Biochemistry and Molecular Biology, University of Debrecen, 4032 Debrecen, Hungary
| | - Andrew V. Schally
- Endocrine, Polypeptide and Cancer Institute and South Florida VA Foundation for Research and Education, Veterans Affairs Medical Center, Miami, FL 33125, USA
- Department of Pathology, Miller School of Medicine, University of Miami, Miami, FL 33101, USA
- Department of Medicine, Divisions of Hematology-Oncology and Endocrinology, Miller School of Medicine, University of Miami, Miami, FL 33101, USA
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL 33136, USA
| | - Gabor Halmos
- Department of Biopharmacy, University of Debrecen, 4032 Debrecen, Hungary
- Endocrine, Polypeptide and Cancer Institute and South Florida VA Foundation for Research and Education, Veterans Affairs Medical Center, Miami, FL 33125, USA
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Baka J, Csakvari E, Huzian O, Dobos N, Siklos L, Leranth C, MacLusky NJ, Duman RS, Hajszan T. Stress induces equivalent remodeling of hippocampal spine synapses in a simulated postpartum environment and in a female rat model of major depression. Neuroscience 2017; 343:384-397. [PMID: 28012870 PMCID: PMC5421158 DOI: 10.1016/j.neuroscience.2016.12.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 12/11/2016] [Accepted: 12/13/2016] [Indexed: 12/24/2022]
Abstract
Stress and withdrawal of female reproductive hormones are known risk factors of postpartum depression. Although both of these factors are capable of powerfully modulating neuronal plasticity, there is no direct electron microscopic evidence of hippocampal spine synapse remodeling in postpartum depression. To address this issue, hormonal conditions of pregnancy and postpartum period were simulated in ovariectomized adult female Sprague-Dawley rats (n=76). The number of hippocampal spine synapses and the depressive behavior of rats in an active escape task were investigated in untreated control, hormone-withdrawn 'postpartum', simulated proestrus, and hormone-treated 'postpartum' animals. After 'postpartum' withdrawal of gonadal steroids, inescapable stress caused a loss of hippocampal spine synapses, which was related to poor escape performance in hormone-withdrawn 'postpartum' females. These responses were equivalent with the changes observed in untreated controls that is an established animal model of major depression. Maintaining proestrus levels of ovarian hormones during 'postpartum' stress exposure did not affect synaptic and behavioral responses to inescapable stress in simulated proestrus animals. By contrast, maintaining pregnancy levels of estradiol and progesterone during 'postpartum' stress exposure completely prevented the stress-induced loss of hippocampal spine synapses, which was associated with improved escape performance in hormone-treated 'postpartum' females. This protective effect appears to be mediated by a muted stress response as measured by serum corticosterone concentrations. In line with our emerging 'synaptogenic hypothesis' of depression, the loss of hippocampal spine synapses may be a novel perspective both in the pathomechanism and in the clinical management of postpartum affective illness.
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Affiliation(s)
- Judith Baka
- Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Eszter Csakvari
- Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Orsolya Huzian
- Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Nikoletta Dobos
- Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Laszlo Siklos
- Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvari Krt 62, 6726 Szeged, Hungary
| | - Csaba Leranth
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States; Department of Neuroscience, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States
| | - Neil J MacLusky
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, Ontario N1G 2W1, Canada
| | - Ronald S Duman
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States; Department of Psychiatry, Yale University School of Medicine, 34 Park Street, New Haven, CT 06508, United States
| | - Tibor Hajszan
- Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvari Krt 62, 6726 Szeged, Hungary; Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States.
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10
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Naude PJW, Dobos N, van der Meer D, Mulder C, Pawironadi KGD, den Boer JA, van der Zee EA, Luiten PGM, Eisel ULM. Analysis of cognition, motor performance and anxiety in young and aged tumor necrosis factor alpha receptor 1 and 2 deficient mice. Behav Brain Res 2013; 258:43-51. [PMID: 24135018 DOI: 10.1016/j.bbr.2013.10.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 10/03/2013] [Accepted: 10/06/2013] [Indexed: 12/19/2022]
Abstract
TNF-α plays important functional roles in the central nervous system during normal physiological circumstances via intricate signaling mechanisms between its receptors, TNF receptor 1 (TNFR1) and TNF receptor 2 (TNFR2). Although the roles of TNFR1 and TNFR2 in the diseased brain have received considerable attention, their functions on behavior and cognition in a non-inflammatory physiological aged environment are still unknown. In the present study we investigated the functional roles of TNFR1 and TNFR2 in learning and memory, motor performance and anxiety-like behavior via several behavioral and cognitive assessments in young and aged mice, deficient of either TNFR1 or TNFR2. Results from this study show that deletion of TNFR2 impairs novel object recognition, spatial memory recognition, contextual fear conditioning, motor performance and can increase anxiety-like behavior in young adult mice. Concerning the functions of TNFR1 and TNFR2 functioning in an aged environment, age caused memory impairment in spatial memory recognition independent of genotype. However, both young and aged mice deficient of TNFR2 performed poorly in the contextual fear conditioning test. These mice displayed decreased anxiety-like behavior, whereas mice deficient of TNFR1 were insusceptible to the effect of aging on anxiety-like behavior. This study provides novel knowledge on TNFR1 and TNFR2 functioning in behavior and cognition in young and aged mice in a non-inflammatory physiological environment.
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Affiliation(s)
- Petrus J W Naude
- Department of Molecular Neurobiology, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands; Department of Neurology and Alzheimer Research Center, University of Groningen, University Medical Center Groningen, The Netherlands
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11
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Dobos N, de Vries EF, Kema IP, Patas K, Prins M, Nijholt IM, Dierckx RA, Korf J, den Boer JA, Luiten PG, Eisel UL. The Role of Indoleamine 2,3-Dioxygenase in a Mouse Model of Neuroinflammation-Induced Depression. ACTA ACUST UNITED AC 2012; 28:905-15. [DOI: 10.3233/jad-2011-111097] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Nikoletta Dobos
- Department of Molecular Neurobiology, University of Groningen, Groningen, The Netherlands
- Department of Psychiatry, University Medical Center Groningen, Groningen, The Netherlands
| | - Erik F.J. de Vries
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, Groningen, The Netherlands
| | - Ido P. Kema
- Department of Laboratory Medicine, University Medical Center Groningen, Groningen, The Netherlands
| | - Konstantinos Patas
- Department of Molecular Neurobiology, University of Groningen, Groningen, The Netherlands
| | - Marloes Prins
- Department of Molecular Neurobiology, University of Groningen, Groningen, The Netherlands
| | - Ingrid M. Nijholt
- Department of Molecular Neurobiology, University of Groningen, Groningen, The Netherlands
| | - Rudi A. Dierckx
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, Groningen, The Netherlands
| | - Jakob Korf
- Department of Psychiatry, University Medical Center Groningen, Groningen, The Netherlands
| | - Johan A. den Boer
- Department of Psychiatry, University Medical Center Groningen, Groningen, The Netherlands
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, Groningen, The Netherlands
| | - Paul G.M. Luiten
- Department of Molecular Neurobiology, University of Groningen, Groningen, The Netherlands
- Department of Psychiatry, University Medical Center Groningen, Groningen, The Netherlands
| | - Ulrich L.M. Eisel
- Department of Molecular Neurobiology, University of Groningen, Groningen, The Netherlands
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12
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Dobos N, Korf J, Luiten PGM, Eisel ULM. Neuroinflammation in Alzheimer's disease and major depression. Biol Psychiatry 2010; 67:503-4. [PMID: 20185031 DOI: 10.1016/j.biopsych.2010.01.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 01/26/2010] [Accepted: 01/27/2010] [Indexed: 10/19/2022]
Affiliation(s)
- Nikoletta Dobos
- Department of Molecular Neurobiology, University of Groningen, Groningen, The Netherlands
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Dobos N, Nisenbaum HL, Axel L, Van Arsdalen K, Tomaszewski JE. Penile leiomyosarcoma: sonographic and magnetic resonance imaging findings. J Ultrasound Med 2001; 20:553-557. [PMID: 11345115 DOI: 10.7863/jum.2001.20.5.553] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- N Dobos
- Department of Radiology, University of Pennsylvania Medical Center, Philadelphia 19104, USA
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Collins J, Riebe JD, Albanese MA, Dobos N, Heiserman K, Primack SL, Kazerooni EA. Medical students and radiology residents: can they learn as effectively with the same educational materials? Acad Radiol 1999; 6:691-5. [PMID: 10894073 DOI: 10.1016/s1076-6332(99)80119-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
RATIONALE AND OBJECTIVES The purpose of this study was to evaluate the effectiveness of resident-prepared, independent-learning materials for teaching chest radiology to medical students. MATERIALS AND METHODS Students from three U.S. medical schools enrolled in radiology clerkships between March 1998 and June 1998 were randomly divided into control (n = 27) and experimental (n = 31) groups. The experimental group studied 12 chest radiology independent-learning cases (intervention) used to teach radiology residents in a previous study. Both groups took a 36-item, multiple-choice test (previously used to test radiology residents) on three occasions (before intervention [pretest], 1 day after intervention [posttest], and 2-4 weeks after intervention [final examination]). Student scores were then compared with resident scores. RESULTS Mean scores were similar across institutions at pretest, but increases at posttest and final examination scores differed across time, school, and group (P < .005). Mean differences in scores between experimental and control groups at pretest, posttest, and 2-4-week final examination were -0.22, 9.79, and 9.14, respectively, demonstrating increased performance at posttesting that remained present (though slightly attenuated) 2-4 weeks later. Comparing performance, residents had mean pretest scores of 19.2 and students of 14.1, a five-point difference attributable to the residents' greater experience. Both residents and students gained approximately nine points at posttest. At final examination, the difference between residents and students was only 1.4 points, suggesting the experimental program (teaching materials) brought students close to the long-term retention shown by residents. CONCLUSION Independent study of resident-prepared chest radiology teaching cases increased medical student knowledge for at least 2 or 4 weeks after instruction. Although starting at lower knowledge levels, students experienced gains in knowledge comparable to those of residents, suggesting the same materials can be used to teach both students and residents.
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Affiliation(s)
- J Collins
- Department of Radiology, University of Wisconsin Hospital and Clinics, Clinical Science Center, Madison 53792-3252, USA
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