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Lee JY, Kim HY, Lee YS, Seo HY, Park JY, Jeong JM. Preparation of a multi-modal agent for sentinel lymph node mapping using Evans blue and 99mTc-labeled mannosylated human serum albumin conjugate. Nucl Med Biol 2020; 84-85:38-45. [PMID: 32044560 DOI: 10.1016/j.nucmedbio.2020.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/27/2019] [Accepted: 02/02/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The identification of sentinel lymph nodes (SLNs) is important in deciding the resection range during surgery. 99mTc-labeled mannosylated human serum albumin ([99mTc]Tc-MSA) is a radiopharmaceutical developed for SLN detection by targeting macrophages. Evans blue (EB) is a blue dye binding strongly to albumin and has been used for SLN detection. [99mTc]Tc-MSA-EB conjugate was prepared as a multi-modal imaging agent and tested its performance by visual investigation, fluorescence imaging and SPECT/CT for SLN mapping in mice. METHODS EB was mixed with various concentration of MSA to prepare MSA-EB conjugates. The binding efficiencies were determined using thin-layer chromatography. The UV-VIS spectra and molar extinction coefficient of the conjugate were obtained. The fluorescence was monitored at the excitation wavelength range 420-780 nm and the emission wavelength range 520-845 nm. The [99mTc]Tc-MSA-EB conjugate and EB were injected into the footpads of normal BALB/c mice to check the lymph node (LN) uptakes. The visible, fluorescence, and SPECT/CT images were obtained after injection. RESULTS The conjugation of EB with MSA increased by time and was saturated within 10 min. The molar extinction coefficient of the conjugate was 99,259.3/M/cm at 620 nm. The uptake of conjugate into the popliteal LN after injection into the footpads of mice was investigated visually and fluorescence imaging. SPECT/CT images showed that the standardized uptake values of [99mTc]Tc-MSA-EB conjugate in popliteal LN were about 4 times higher than in sciatic LN at all timepoints. It was confirmed by investigating resected LN that the blue color, fluorescence, and radioactivity of the [99mTc]Tc-MSA-EB conjugate were retained only on the LN and did not spread to adjoining tissues. CONCLUSION [99mTc]Tc-MSA-EB conjugate has a great potential as a multi-modal SLN mapping agent which could be detected by visual investigation, fluorescence imaging, and SPECT/CT.
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Affiliation(s)
- Ji Youn Lee
- Department of Nuclear Medicine, Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Radiology, University of Pennsylvania, Philadelphia, USA
| | - Ho Young Kim
- Department of Nuclear Medicine, Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Radiology, University of Pennsylvania, Philadelphia, USA
| | - Yun-Sang Lee
- Department of Nuclear Medicine, Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hye Yeon Seo
- Department of Nuclear Medicine, Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, Republic of Korea
| | - Ji Yong Park
- Department of Nuclear Medicine, Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, Republic of Korea
| | - Jae Min Jeong
- Department of Nuclear Medicine, Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Tellier F, Steibel J, Chabrier R, Blé FX, Tubaldo H, Rasata R, Chambron J, Duportail G, Simon H, Rodier JF, Poulet P. Sentinel lymph nodes fluorescence detection and imaging using Patent Blue V bound to human serum albumin. BIOMEDICAL OPTICS EXPRESS 2012; 3:2306-2316. [PMID: 23024922 PMCID: PMC3447570 DOI: 10.1364/boe.3.002306] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 07/20/2012] [Accepted: 07/27/2012] [Indexed: 05/28/2023]
Abstract
Patent Blue V (PBV), a dye used clinically for sentinel lymph node detection, was mixed with human serum albumin (HSA). After binding to HSA, the fluorescence quantum yield increased from 5 × 10(-4) to 1.7 × 10(-2), which was enough to allow fluorescence detection and imaging of its distribution. A detection threshold, evaluated in scattering test objects, lower than 2.5 nmol × L(-1) was obtained, using a single-probe setup with a 5-mW incident light power. The detection sensitivity using a fluorescence imaging device was in the µmol × L(-1) range, with a noncooled CCD camera. Preclinical evaluation was performed on a rat model and permitted to observe inflamed nodes on all animals.
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Affiliation(s)
- Franklin Tellier
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
- EURORAD, 2 rue Ettore Bugatti 67201 Eckbolsheim, France
| | - Jérôme Steibel
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
| | - Renée Chabrier
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
| | - François Xavier Blé
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
| | - Hervé Tubaldo
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
| | - Ravelo Rasata
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
| | - Jacques Chambron
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
- EURORAD, 2 rue Ettore Bugatti 67201 Eckbolsheim, France
| | - Guy Duportail
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213, Université de Strasbourg/CNRS, Faculté de Pharmacie, 74, route du Rhin, 67401 Illkirch, France
| | - Hervé Simon
- EURORAD, 2 rue Ettore Bugatti 67201 Eckbolsheim, France
| | - Jean-François Rodier
- Department of Surgical Oncology, Paul Strauss Cancer Center, 3 rue de la Porte de l'Hôpital, 67085 Strasbourg, France
| | - Patrick Poulet
- Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7237, Université de Strasbourg/CNRS, Faculté de Médecine, 4 rue Kirschleger, 67085 Strasbourg, France
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