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Trencsényi G, Enyedi KN, Mező G, Halmos G, Képes Z. NGR-Based Radiopharmaceuticals for Angiogenesis Imaging: A Preclinical Review. Int J Mol Sci 2023; 24:12675. [PMID: 37628856 PMCID: PMC10454655 DOI: 10.3390/ijms241612675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Angiogenesis plays a crucial role in tumour progression and metastatic spread; therefore, the development of specific vectors targeting angiogenesis has attracted the attention of several researchers. Since angiogenesis-associated aminopeptidase N (APN/CD13) is highly expressed on the surface of activated endothelial cells of new blood vessels and a wide range of tumour cells, it holds great promise for imaging and therapy in the field of cancer medicine. The selective binding capability of asparagine-glycine-arginine (NGR) motif containing molecules to APN/CD13 makes radiolabelled NGR peptides promising radiopharmaceuticals for the non-invasive, real-time imaging of APN/CD13 overexpressing malignancies at the molecular level. Preclinical small animal model systems are major keystones for the evaluation of the in vivo imaging behaviour of radiolabelled NGR derivatives. Based on existing literature data, several positron emission tomography (PET) and single-photon emission computed tomography (SPECT) radioisotopes have been applied so far for the labelling of tumour vasculature homing NGR sequences such as Gallium-68 (68Ga), Copper-64 (64Cu), Technetium-99m (99mTc), Lutetium-177 (177Lu), Rhenium-188 (188Re), or Bismuth-213 (213Bi). Herein, a comprehensive overview is provided of the recent preclinical experiences with radiolabelled imaging probes targeting angiogenesis.
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Affiliation(s)
- György Trencsényi
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary;
| | - Kata Nóra Enyedi
- ELKH-ELTE Research Group of Peptide Chemistry, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary; (K.N.E.); (G.M.)
- Institute of Chemistry, Faculty of Science, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Gábor Mező
- ELKH-ELTE Research Group of Peptide Chemistry, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary; (K.N.E.); (G.M.)
- Institute of Chemistry, Faculty of Science, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Gábor Halmos
- Department of Biopharmacy, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary;
| | - Zita Képes
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary;
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Banfalvi G. Apoptotic Janus-faced mycotoxins against thoracal and breast metastases. Apoptosis 2023; 28:754-768. [PMID: 37055605 DOI: 10.1007/s10495-023-01837-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2023] [Indexed: 04/15/2023]
Abstract
Abdominal organs (liver, kidney, spleen) are frequent targets of cancer cell invasion but their primary tumours are less known for their metastatic potential to other organs e.g. to the breast. Despite the known connection of the pathogenesis from breast cancer to liver metastasis, the study of the spread in the opposite direction has been neglected. The notion that breast cancer could be a metastasis besides being a primary tumour is based on rodents' tumour models upon implantation of tumour cells under the capsule of the kidney or under the Glisson's capsule of the liver of rats and mice. Tumour cells develop into a primary tumour at the site of subcutaneous implantation. The metastatic process starts with peripheral disruptions of blood vessels near the surface of primary tumours. Tumour cells released into the abdomen cross the apertures of the diaphragm, enter the thoracal lymph nodes and accumulate in parathymic lymph nodes. Abdominal colloidal carbon particles injected into the abdomen faithfully mimicked the migration of tumour cells and deposited in parathymic lymph nodes (PTNs). An explanation is provided why the connection between abdominal tumours and mammary tumours escaped attention, notably, parathymic lymph nodes in humans were referred to as internal mammary or parasternal lymph nodes. The apoptotic effect of Janus-faced cytotoxins is suggested to provide a new approach against the spread of abdominal primary tumours, and metastatic development.
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Affiliation(s)
- Gaspar Banfalvi
- Department of Molecular Biotechnology and Microbiology and Department of Physiology, University of Debrecen, 1 Egyetem Square, Life Sciences Building 1.102, Debrecen, 4010, Hungary.
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Képes Z, Trencsényi G. Subrenal Capsule Assay - SRCA: The Promising Re-Emergence of a Long-Forgotten Method in Preclinical Nuclear Medical Cancer Diagnostics. J Cancer 2023; 14:183-192. [PMID: 36741259 PMCID: PMC9891872 DOI: 10.7150/jca.78599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 11/02/2022] [Indexed: 01/04/2023] Open
Abstract
Since metastases are responsible for the majority of cancer-related death, in-depth understanding of metastatisation may provide an opportunity for the introduction of new therapeutic as well as diagnostic approaches in cancer management. Previously, preclinical research into the development and progression of malignancies has been hampered by the relative paucity of in vivo tumor models. Subrenal capsule assay (SRCA)-induced tumor-bearing experimental animal models, however, serve as potential preclinical model systems for the assessment of primary tumors and the route of metastatic spread. Several studies implementing either Hepatocarcinoma (He/De), Mesoblastic Nephroma (Ne/De), chemically induced Myeloid Leukemia (My1/De), or spontaneous Myeloid Myelomonocytic Leukemia (My2/De) cells under the left renal capsule of rats applying SRCA method were underway to study secondary tumor formation. Based on the results of this research, subrenally transplanted neoplastic cells led to the appearance of metastasis in the parathymic lymph nodes. Therefore, renal capsule/parathymic lymph node complex seems to be valuable in the in vivo evaluation of the process of metastatisation and the occurrence of secondary neoplasms. The re-emergence of this highly promising SRCA-based renal capsule/parathymic lymph node complex in preclinical nuclear medicine and experimental oncology may open a novel field towards drug trials and radiopharmaceutical development. In the present review, we provide a detailed overview of the history of SRCA as well as the series of research on the establishment of renal capsule/parathymic lymph node complex.
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Affiliation(s)
- Zita Képes
- ✉ Corresponding author: Zita Képes M.D. Ph.D.; Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary. E-mail: ; Phone: +36-70-364-6025
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Zhao Y, Bai Y, Li Y, Dong Y, Guo Y, Wang W, Liu H. Disturbance of myocardial metabolism participates in autoantibodies against β 1 -adrenoceptor-induced cardiac dysfunction. Clin Exp Pharmacol Physiol 2021; 48:846-854. [PMID: 33565091 DOI: 10.1111/1440-1681.13485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 10/08/2020] [Accepted: 02/07/2021] [Indexed: 01/10/2023]
Abstract
Cardiac dysfunction is involved in disorders of energy metabolism. High-titre autoantibodies against the β1 -adrenoceptor (β1 -AAs) have been reported to exist in patients with cardiac dysfunction; however, the mechanism by which β1 -AAs affect cardiac function is unknown. This study aimed to determine whether β1 -AAs disturb myocardium energy metabolism and cause cardiac dysfunction. β1 -AA monoclonal antibodies (β1 -AAmAbs) were successfully pre-synthesized by hybridoma clones and used in all experiments. β1 -AAmAbs impaired cardiac function and induced a myocardial metabolic disturbance, as evidenced by decreased left ventricular ejection fraction and fractional shortening. In addition, β1 -AAmAbs decreased the adenosine triphosphate level and increased cardiac energy consumption (rate-pressure product). We further showed that the effects of β1 -AAmAbs on heart tissue might involve the mitochondria and metabolic pathways via the β1 -adrenoceptor based on an immunoprecipitation and mass spectrometry. Additionally, we found that β1 -AAmAbs impaired myocardial mitochondrial structure, decreased the membrane potential, and induced insufficient mitophagy. In conclusion, β1 -AAmAb-induced cardiac dysfunction is partly due to a disturbance in myocardial energy metabolism.
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Affiliation(s)
- Yuhui Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yan Bai
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yang Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yu Dong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Yuhao Guo
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Wen Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
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Kis A, Dénes N, Szabó JP, Arató V, Jószai I, Enyedi KN, Lakatos S, Garai I, Mező G, Kertész I, Trencsényi G. In vivo assessment of aminopeptidase N (APN/CD13) specificity of different 68Ga-labelled NGR derivatives using PET/MRI imaging. Int J Pharm 2020; 589:119881. [PMID: 32946975 DOI: 10.1016/j.ijpharm.2020.119881] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 02/06/2023]
Abstract
Aminopeptidase N (APN/CD13) plays an important role in neoangiogenic process in malignancies. Our previous studies have already shown that 68Ga-labelled NOTA conjugated asparagine-glycine-arginine peptide (c[KNGRE]-NH2) specifically bind to APN/CD13 expressing tumors. The aim of this study was to evaluate and compare the APN/CD13 specificity of newly synthesized 68Ga-labelled NGR derivatives in vivo by PET/MRI imaging using hepatocellular carcinoma (He/De) and mesoblastic nephroma (Ne/De) tumor models. PET/MRI and ex vivo biodistribution studies were performed 11 ± 1 days after subcutaneous injection of tumor cells and 90 min after intravenous injection of 68Ga-NOTA-c(NGR), 68Ga-NODAGA-c(NGR), 68Ga-NODAGA-c(NGR) (MG1) or 68Ga-NODAGA-c(NGR) (MG2). The APN/CD13 selectivity was confirmed by blocking experiments and the APN/CD13 expression was verified by immunohistochemistry. 68Ga-labelled c(NGR) derivatives were produced with high specific activity and radiochemical purity. In control animals, low radiotracer accumulation was found in abdominal and thoracic organs. Using tumor-bearing animals we found that the 68Ga-NOTA-c(NGR), 68Ga-NODAGA-c(NGR), and 68Ga-NODAGA-c(NGR) (MG1) derivatives showed higher uptake in He/De and Ne/De tumors, than that of the accumulation of 68Ga-NODAGA-c(NGR) (MG2). APN/CD13 is a very promising target in PET imaging, however, the selection of the appropriate 68Ga-labelled NGR-based radiopharmaceutical is critical for the precise detection of tumor neo-angiogenesis and for monitoring the efficacy of anticancer therapy.
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Key Words
- (68)Ga
- Aminopeptidase N
- Angiogenesis
- CD13
- CID: 2796029, 1-hydroxybenzotriazole (HOBt)
- CID: 3036142, 1,4,7-triazacyclononane-1,4,7-triacetic acid (NOTA)
- CID: 33032, L-Glutamic acid
- CID: 5962, L-Lysine
- CID: 6228, N,N-dimethylformamide (DMF)
- CID: 6267, L-Asparagine
- CID: 6322, L-Arginine
- CID: 6422, triflouroacetic acid (TFA)
- CID: 750, Glyicine
- NGR
- PET/MRI imaging
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Affiliation(s)
- Adrienn Kis
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary; Doctoral School of Clinical Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Noémi Dénes
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary; Gyula Petrányi Doctoral School of Allergy and Clinical Immunology, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Judit P Szabó
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary; Doctoral School of Clinical Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Viktória Arató
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary
| | - István Jószai
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary
| | - Kata Nóra Enyedi
- Eötvös Loránd University, Faculty of Science, Institute of Chemistry, Budapest, Hungary
| | - Szilvia Lakatos
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary
| | - Ildikó Garai
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary; Scanomed LTD, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Gábor Mező
- Eötvös Loránd University, Faculty of Science, Institute of Chemistry, Budapest, Hungary; MTA-ELTE, Research Group of Peptide Chemistry, Hungarian Academy of Sciences, Eötvös L. University, Budapest, Hungary
| | - István Kertész
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary
| | - György Trencsényi
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Hungary; Doctoral School of Clinical Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary; Gyula Petrányi Doctoral School of Allergy and Clinical Immunology, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary.
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Ekin S, Kiziltas H, Bayramoglu Akkoyun M, Ekin HN, Yildirim S, Oto G, Akbas E, Deliorman Orhan D, Ozgokce F. Nephroprotective effect of Ferulago angulata flowers on N-nitrosodimethylamine-induced nephrotoxicity in rats and its phytochemical profile. J Food Biochem 2019; 43:e13030. [PMID: 31482601 DOI: 10.1111/jfbc.13030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 08/07/2019] [Accepted: 08/11/2019] [Indexed: 12/17/2022]
Abstract
The present study was designed to assess the phytochemical content of Ferulago angulata (FA) and possible in vivo nephroprotective effect of FA administration on trace elements, minerals, MDA and GSH in kidney and liver tissue samples, serum vitamin (α-tocopherol, retinol, cholecalciferol, phylloquinone), TSA, and LSA in a rat model of DMN-induced nephrotoxicity. In the study, Wistar albino rats were assigned to six groups: Control (0.9% NaCl), (DMN 10 mg/kg), (FA 150 mg/kg), (DMN + FA 150 mg/kg), (FA 300 mg/kg), and (DMN + FA 300 mg/kg). Rats were intraperitoneally given DMN for the first 7 days. Renal injury caused by DMN was proved by the histopathological alterations. The FA (300 mg/kg) treatment significantly normalized Se, Cr, Ca levels in liver and Co level in kidney tissue samples. These observed positive effects are due to the phytochemical content of the plant. The flower extract of FA (300 mg/kg) can be used for the prevention of kidney damage. PRACTICAL APPLICATIONS: Ferulago angulata flowers are used in traditional medicine for treat kidney and liver digestive system diseases. This species is endemic taxa of the family Apiaceae, which has been used both as food and therapeutics because of their phytochemical composition. In this study, the phenolic characterization of FA flower was used to a new RP-HPLC method, as well as the biological activity of FA flower and possible in vivo nephroprotective effect of FA flowers on trace elements, minerals, MDA and GSH in kidney and liver tissue samples and vitamins, TSA, and LSA in serum samples a rat model of DMN-induced nephrotoxicity. It was found that high level of phenolic compounds (chlorogenic acid, vanillic acid, 2-hydroxycinnamic acid) present in the flower extract of F. angulata has positive effects and antioxidant properties. Due to its phenolic content, FA flower extract could protect for kidney damage and can be used as antioxidants in the food additive and pharmaceutical industry.
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Affiliation(s)
- Suat Ekin
- Department of Chemistry, Faculty of Science, Van Yuzuncu Yil University, Van, Turkey
| | - Hatice Kiziltas
- Pharmaceutical Department, Hizan Vocational School, Bitlis Eren University, Bitlis, Turkey
| | | | - Hasya Nazli Ekin
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Serkan Yildirim
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Gokhan Oto
- Department of Pharmacology, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - Esvet Akbas
- Department of Chemistry, Faculty of Science, Van Yuzuncu Yil University, Van, Turkey
| | | | - Fevzi Ozgokce
- Department of Biology, Faculty of Science, Van Yuzuncu Yil University, Van, Turkey
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Király G, Hargitai Z, Kovács I, Szemán-Nagy G, Juhász I, Bánfalvi G. Metastatic Spread from Abdominal Tumor Cells to Parathymic Lymph Nodes. Pathol Oncol Res 2018; 25:625-633. [PMID: 30406399 DOI: 10.1007/s12253-018-0492-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 10/10/2018] [Indexed: 12/30/2022]
Abstract
Metastatic studies on rats showed that after subrenal implantation of tumor cells under the capsule of the kidney or subhepatic implantation under Glisson's capsule of the liver generated primary tumors in these organs. It was assumed that tumor cells that escaped through the disrupted peripheral blood vessels of primary tumors entered the peritoneal cavity, crossed the diaphragm, and appeared in the thoracal, primarily in the parathymic lymph nodes. This explanation did not answer the question whether distant lymph nodes were reached via the blood stream from the primary tumor or through the thoracal lymphatic vessels. In this work, we investigated the metastatic pathway in C3H/HeJ mice, after direct intraperitoneal administration of murine SCC VII cells bypassing the hematogenic spread of tumor cells. The direct pathway was also mimicked by intraperitoneal injection of Pelican Ink colloidal particles, which appeared in the parathymic lymph nodes, similarly to the tumor cells that caused metastasis in the parathymic lymph nodes and in the thymic tissue. The murine peritoneal-parathymic lymph node route indicates a general mechanism of tumor progression from the abdominal effusion. This pathway starts with the growth of abdominal tumors, continues as thoracal metastasis in parathymic lymph nodes and may proceed as mammary lymph node metastasis.
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Affiliation(s)
- Gábor Király
- Department of Biotechnology and Microbiology, University of Debrecen, 1 Egyetem Square, Debrecen, 4010, Hungary.,Department of Surgery and Operative Techniques, University of Debrecen, 98 Nagyerdei körút, Debrecen, 4012, Hungary
| | - Zoltán Hargitai
- Department of Pathology, Kenézy Hospital, University of Debrecen, 2-28 Bartok Street, Debrecen, 4031, Hungary
| | - Ilona Kovács
- Department of Pathology, Kenézy Hospital, University of Debrecen, 2-28 Bartok Street, Debrecen, 4031, Hungary
| | - Gábor Szemán-Nagy
- Department of Biotechnology and Microbiology, University of Debrecen, 1 Egyetem Square, Debrecen, 4010, Hungary
| | - István Juhász
- Department of Surgery and Operative Techniques, University of Debrecen, 98 Nagyerdei körút, Debrecen, 4012, Hungary. .,Department of Dermatology, University of Debrecen, 98 Nagyerdei körút, Debrecen, 4012, Hungary.
| | - Gáspár Bánfalvi
- Department of Biotechnology and Microbiology, University of Debrecen, 1 Egyetem Square, Debrecen, 4010, Hungary.
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Modeling of Lymphogenous and Hematogenous Metastasizing from Murine В16 Melanoma in Rats. Bull Exp Biol Med 2017; 163:793-795. [PMID: 29063316 DOI: 10.1007/s10517-017-3905-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Indexed: 10/18/2022]
Abstract
We developed a model of experimental melanoma. Intralienal xenogeneic transplantation of a suspension of melanoma cells B16 in physiological saline (0.1 ml; 1:10) was conducted to outbred male rats. In 6 months, histologically confirmed melanoma B16 in the spleen and its metastases in the liver, intestine, pancreas, adrenal glands, and lungs (hematogenous metastasis), as well as in the thymus and lymph nodes (lymphogenous metastasis) were revealed in rats. The proposed rat model of melanoma B16 metastasizes by the hematogenous and lymphogenous pathways, develops over 6 months, and allows receiving sufficient volume of material for analysis.
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Waddington DEJ, Sarracanie M, Zhang H, Salameh N, Glenn DR, Rej E, Gaebel T, Boele T, Walsworth RL, Reilly DJ, Rosen MS. Nanodiamond-enhanced MRI via in situ hyperpolarization. Nat Commun 2017; 8:15118. [PMID: 28443626 PMCID: PMC5414045 DOI: 10.1038/ncomms15118] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 03/01/2017] [Indexed: 11/05/2022] Open
Abstract
Nanodiamonds are of interest as nontoxic substrates for targeted drug delivery and as highly biostable fluorescent markers for cellular tracking. Beyond optical techniques, however, options for noninvasive imaging of nanodiamonds in vivo are severely limited. Here, we demonstrate that the Overhauser effect, a proton–electron polarization transfer technique, can enable high-contrast magnetic resonance imaging (MRI) of nanodiamonds in water at room temperature and ultra-low magnetic field. The technique transfers spin polarization from paramagnetic impurities at nanodiamond surfaces to 1H spins in the surrounding water solution, creating MRI contrast on-demand. We examine the conditions required for maximum enhancement as well as the ultimate sensitivity of the technique. The ability to perform continuous in situ hyperpolarization via the Overhauser mechanism, in combination with the excellent in vivo stability of nanodiamond, raises the possibility of performing noninvasive in vivo tracking of nanodiamond over indefinitely long periods of time. Hyperpolarized magnetic resonance imaging can enhance imaging contrast by orders of magnitude, but applications are limited by the thermal relaxation of hyperpolarized states. Here, Waddington et al. demonstrate the on-demand hyperpolarization of hydrogen spins through the Overhauser effect with nanodiamonds.
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Affiliation(s)
- David E J Waddington
- A.A. Martinos Center for Biomedical Imaging, Suite 2301, 149 13th Street, Charlestown, Massachusetts 02129, USA.,ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia.,Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA
| | - Mathieu Sarracanie
- A.A. Martinos Center for Biomedical Imaging, Suite 2301, 149 13th Street, Charlestown, Massachusetts 02129, USA.,Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA.,Harvard Medical School, 25 Shattuck Street, Boston, Massachusetts 02115, USA
| | - Huiliang Zhang
- Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA.,Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
| | - Najat Salameh
- A.A. Martinos Center for Biomedical Imaging, Suite 2301, 149 13th Street, Charlestown, Massachusetts 02129, USA.,Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA.,Harvard Medical School, 25 Shattuck Street, Boston, Massachusetts 02115, USA
| | - David R Glenn
- Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA.,Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
| | - Ewa Rej
- ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Torsten Gaebel
- ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Thomas Boele
- ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Ronald L Walsworth
- Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA.,Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
| | - David J Reilly
- ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Matthew S Rosen
- A.A. Martinos Center for Biomedical Imaging, Suite 2301, 149 13th Street, Charlestown, Massachusetts 02129, USA.,Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA.,Harvard Medical School, 25 Shattuck Street, Boston, Massachusetts 02115, USA
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