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Hernandez Vargas S, AghaAmiri S, Ghosh SC, Luciano MP, Borbon LC, Ear PH, Howe JR, Bailey-Lundberg JM, Simonek GD, Halperin DM, Tran Cao HS, Ikoma N, Schnermann MJ, Azhdarinia A. High-Contrast Detection of Somatostatin Receptor Subtype-2 for Fluorescence-Guided Surgery. Mol Pharm 2022; 19:4241-4253. [PMID: 36174110 PMCID: PMC9830638 DOI: 10.1021/acs.molpharmaceut.2c00583] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Dye design can influence the ability of fluorescently labeled imaging agents to generate tumor contrast and has become an area of significant interest in the field of fluorescence-guided surgery (FGS). Here, we show that the charge-balanced near-infrared fluorescent (NIRF) dye FNIR-Tag enhances the imaging properties of a fluorescently labeled somatostatin analogue. In vitro studies showed that the optimized fluorescent conjugate MMC(FNIR-Tag)-TOC bound primarily via somatostatin receptor subtype-2 (SSTR2), whereas its negatively charged counterpart with IRDye 800CW had higher off-target binding. NIRF imaging in cell line- and patient-derived xenograft models revealed markedly higher tumor contrast with MMC(FNIR-Tag)-TOC, which was attributed to increased tumor specificity. Ex vivo staining of surgical biospecimens from primary and metastatic tumors, as well as involved lymph nodes, demonstrated binding to human tumors. Finally, in an orthotopic tumor model, a simulated clinical workflow highlighted our unique ability to use standard preoperative nuclear imaging for selecting patients likely to benefit from SSTR2-targeted FGS. Our findings demonstrate the translational potential of MMC(FNIR-Tag)-TOC for intraoperative imaging and suggest broad utility for using FNIR-Tag in fluorescent probe development.
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Affiliation(s)
- Servando Hernandez Vargas
- The
Brown Foundation Institute of Molecular Medicine, McGovern Medical
School, The University of Texas Health Science
Center at Houston, Houston, Texas77054, United States
| | - Solmaz AghaAmiri
- The
Brown Foundation Institute of Molecular Medicine, McGovern Medical
School, The University of Texas Health Science
Center at Houston, Houston, Texas77054, United States
| | - Sukhen C. Ghosh
- The
Brown Foundation Institute of Molecular Medicine, McGovern Medical
School, The University of Texas Health Science
Center at Houston, Houston, Texas77054, United States
| | - Michael P. Luciano
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland21702, United States
| | - Luis C. Borbon
- Department
of Surgery, University of Iowa Carver College
of Medicine, Iowa City, Iowa52242, United States
| | - Po Hien Ear
- Department
of Surgery, University of Iowa Carver College
of Medicine, Iowa City, Iowa52242, United States
| | - James R. Howe
- Department
of Surgery, University of Iowa Carver College
of Medicine, Iowa City, Iowa52242, United States
| | - Jennifer M. Bailey-Lundberg
- Department
of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas77030, United States
| | - Gregory D. Simonek
- Center
for Laboratory Animal Medicine and Care, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas77030, United States
| | - Daniel M. Halperin
- Department
of Gastrointestinal Medical Oncology, The
University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, Texas77030, United States
| | - Hop S. Tran Cao
- Department
of Surgical Oncology, The University of
Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, Texas77030, United
States
| | - Naruhiko Ikoma
- Department
of Surgical Oncology, The University of
Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, Texas77030, United
States
| | - Martin J. Schnermann
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland21702, United States
| | - Ali Azhdarinia
- The
Brown Foundation Institute of Molecular Medicine, McGovern Medical
School, The University of Texas Health Science
Center at Houston, Houston, Texas77054, United States,
| |
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