1
|
Diocou S, Volpe A, Jauregui-Osoro M, Boudjemeline M, Chuamsaamarkkee K, Man F, Blower PJ, Ng T, Mullen GED, Fruhwirth GO. [ 18F]tetrafluoroborate-PET/CT enables sensitive tumor and metastasis in vivo imaging in a sodium iodide symporter-expressing tumor model. Sci Rep 2017; 7:946. [PMID: 28424464 PMCID: PMC5430436 DOI: 10.1038/s41598-017-01044-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 03/22/2017] [Indexed: 12/22/2022] Open
Abstract
Cancer cell metastasis is responsible for most cancer deaths. Non-invasive in vivo cancer cell tracking in spontaneously metastasizing tumor models still poses a challenge requiring highest sensitivity and excellent contrast. The goal of this study was to evaluate if the recently introduced PET radiotracer [18F]tetrafluoroborate ([18F]BF4-) is useful for sensitive and specific metastasis detection in an orthotopic xenograft breast cancer model expressing the human sodium iodide symporter (NIS) as a reporter. In vivo imaging was complemented by ex vivo fluorescence microscopy and γ-counting of harvested tissues. Radionuclide imaging with [18F]BF4- (PET/CT) was compared to the conventional tracer [123I]iodide (sequential SPECT/CT). We found that [18F]BF4- was superior due to better pharmacokinetics, i.e. faster tumor uptake and faster and more complete clearance from circulation. [18F]BF4--PET was also highly specific as in all detected tissues cancer cell presence was confirmed microscopically. Undetected comparable tissues were similarly found to be free of metastasis. Metastasis detection by routine metabolic imaging with [18F]FDG-PET failed due to low standard uptake values and low contrast caused by adjacent metabolically active organs in this model. [18F]BF4--PET combined with NIS expressing disease models is particularly useful whenever preclinical in vivo cell tracking is of interest.
Collapse
Affiliation(s)
- S Diocou
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK
| | - A Volpe
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK
| | - M Jauregui-Osoro
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK
| | - M Boudjemeline
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK
| | - K Chuamsaamarkkee
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK
| | - F Man
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK
| | - P J Blower
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK
| | - T Ng
- King's College London, The Richard Dimbleby Department of Cancer Research, Randall Division of Molecular Biophysics and Cancer Division, Guy's Campus, London, SE1 1UL, UK
- UCL, Cancer Institute, Paul O'Gorman Building, London, WC1E 6BT, UK
| | - G E D Mullen
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK.
| | - G O Fruhwirth
- King's College London, Imaging Chemistry and Biology, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St. Thomas' Hospital, London, SE1 7EH, UK.
| |
Collapse
|
2
|
Brown K, Badar A, Sunassee K, Fernandes MA, Shariff H, Jurcevic S, Blower PJ, Sacks SH, Mullen GED, Wong W. SPECT/CT lymphoscintigraphy of heterotopic cardiac grafts reveals novel sites of lymphatic drainage and T cell priming. Am J Transplant 2011; 11:225-34. [PMID: 21219574 PMCID: PMC6211618 DOI: 10.1111/j.1600-6143.2010.03388.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The normal function of lymphatic vessels is to facilitate the trafficking of antigen presenting cells to draining lymph nodes where they evoke an immune response. Donor lymphatic vessels are not connected to that of recipients' during organ transplantation. The pathophysiology of this disruption has received little attention. Murine heterotopic cardiac transplantation has been used extensively in transplantation research. Following vascularized organ transplantation, the main site of allosensitization is thought to be in the spleen of the recipient as a result of migration of donor passenger leukocytes via blood. Here, using Single Photon Emission Computed Tomography/Computerized Tomography (SPECT/CT) lymphoscintigraphy, we studied the pattern of lymphatic flow from mouse heterotopic abdominal cardiac grafts and identified mediastinal lymph nodes as the draining nodes for the donor graft. Staining with HY tetramer after transplantation of HY mismatched heart grafts and ELISPOT following allogeneic grafts to detect donor specific T cells revealed them as important sites for allosensitization. Our data indicates that mediastinal lymph nodes play a crucial role in the alloimmune response in this model, and should be used for ex vivo and adoptive transfer studies after transplantation in addition to the spleen.
Collapse
Affiliation(s)
- K. Brown
- MRC Centre for Transplantation, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - A. Badar
- Division of Imaging Sciences, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - K. Sunassee
- Division of Imaging Sciences, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - M. A. Fernandes
- MRC Centre for Transplantation, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - H. Shariff
- MRC Centre for Transplantation, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - S. Jurcevic
- MRC Centre for Transplantation, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - P. J. Blower
- Division of Imaging Sciences, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - S. H. Sacks
- MRC Centre for Transplantation, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - G. E. D. Mullen
- Division of Imaging Sciences, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| | - W. Wong
- MRC Centre for Transplantation, King’s College London, School of Medicine at Guy’s, King’s and St. Thomas’ Hospitals, London, UK
| |
Collapse
|