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Zhang X, Ding B, Qu C, Li H, Sun Y, Gai Y, Chen H, Fang H, Qian K, Zhang Y, Cheng Z, Lan X. A thiopyrylium salt for PET/NIR-II tumor imaging and image-guided surgery. Mol Oncol 2020; 14:1089-1100. [PMID: 32191387 PMCID: PMC7191196 DOI: 10.1002/1878-0261.12674] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 02/17/2020] [Accepted: 03/17/2020] [Indexed: 12/26/2022] Open
Abstract
All tumor imaging modalities have resolution limits below which deeply situated small metastatic foci may not be identified. Moreover, incomplete lesion excision will affect the outcomes of the patients. Scintigraphy is adept in locating lesions, and second near-infrared window (NIR-II) imaging may allow precise real-time tumor delineation. To achieve complete excision of all lesions, multimodality imaging is a promising method for tumor identification and management. Here, a NIR-II thiopyrylium salt, XB1034, was first synthesized and bound to cetuximab and trans-cyclooctene (TCO) to produce XB1034-cetuximab-TCO. This probe provides excellent sensitivity and high temporal resolution NIR-II imaging in mice bearing tumors developed from human breast cancer cells MDA-MB-231. To enable PET imaging, 68 Ga-NETA-tetrazine is subsequently injected into the mice to undergo a bio-orthogonal reaction with the preinjected XB1034-cetuximab-TCO. PET images achieved in the tumor models using the pretargeting strategy are of much higher quality than those obtained using the direct radiolabeling method. Moreover, real-time NIR-II imaging allows accurate tumor excision and sentinel lymph node mapping. In conclusion, XB1034 is a promising molecular imaging probe for tumor diagnosis and treatment.
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Affiliation(s)
- Xiao Zhang
- Department of Nuclear MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Molecular Imaging Program at StanfordBio‐X Program, and Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityCAUSA
- Hubei Key Laboratory of Molecular ImagingWuhanChina
| | - Bingbing Ding
- Molecular Imaging Program at StanfordBio‐X Program, and Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityCAUSA
| | - Chunrong Qu
- Molecular Imaging Program at StanfordBio‐X Program, and Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityCAUSA
| | - Huiling Li
- Department of Nuclear MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Hubei Key Laboratory of Molecular ImagingWuhanChina
| | - Yu Sun
- Molecular Imaging Program at StanfordBio‐X Program, and Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityCAUSA
| | - Yongkang Gai
- Department of Nuclear MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Hubei Key Laboratory of Molecular ImagingWuhanChina
| | - Hao Chen
- Molecular Imaging Program at StanfordBio‐X Program, and Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityCAUSA
| | - Hanyi Fang
- Department of Nuclear MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Hubei Key Laboratory of Molecular ImagingWuhanChina
| | - Kun Qian
- Molecular Imaging Program at StanfordBio‐X Program, and Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityCAUSA
| | - Yongxue Zhang
- Department of Nuclear MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Hubei Key Laboratory of Molecular ImagingWuhanChina
| | - Zhen Cheng
- Molecular Imaging Program at StanfordBio‐X Program, and Department of RadiologyCanary Center at Stanford for Cancer Early DetectionStanford UniversityCAUSA
| | - Xiaoli Lan
- Department of Nuclear MedicineUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Hubei Key Laboratory of Molecular ImagingWuhanChina
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van Onzen AAM, Rossin R, Schenning APH, Nicolay K, Milroy LG, Robillard MS, Brunsveld L. Tetrazine- trans-Cyclooctene Chemistry Applied to Fabricate Self-Assembled Fluorescent and Radioactive Nanoparticles for in Vivo Dual Mode Imaging. Bioconjug Chem 2019; 30:547-551. [PMID: 30731039 PMCID: PMC6429424 DOI: 10.1021/acs.bioconjchem.9b00038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/06/2019] [Indexed: 01/05/2023]
Abstract
Multimodal imaging agents combine two or more imaging modalities into one probe. Self-assembling fluorescent nanoparticles are a promising class of modular multimodal imaging probes as they can allow easy blending of imaging and targeting modalities. Our group recently developed a class of self-assembling and intrinsically fluorescent small molecule-based nanoparticles (SMNPs) with excellent optical properties. In this article, we describe the efficient radiolabeling of these SMNPs via a two-step bioconjugation strategy involving the inverse-electron-demand Diels-Alder ligation between a tetrazine (Tz)-tagged radiolabel and a trans-cyclooctene (TCO)-tagged fluorescent small molecule building block of the SMNPs. Studies in mice revealed that the SMNPs are well tolerated and could be monitored by both radioactivity and fluorescence, thereby demonstrating the potential of SMNPs in optical and dual-mode imaging in vivo. The work also testifies to the utility of the Tz-TCO conjugation chemistry for the labeling of self-assembled nanoparticles.
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Affiliation(s)
- Arthur
H. A. M. van Onzen
- Laboratory
of Chemical Biology, Department of Biomedical Engineering and Institute
for Complex Molecular Systems (ICMS), Eindhoven
University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Raffaella Rossin
- Tagworks
Pharmaceuticals, c/o Radboud University Medical Center, Department of Nuclear Medicine and Radiology, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Albertus P. H.
J. Schenning
- Stimuli-responsive
Functional Materials and Devices and Institute for Complex Molecular
Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Klaas Nicolay
- Biomedical
NMR, Department of Biomedical Engineering, Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Lech-Gustav Milroy
- Laboratory
of Chemical Biology, Department of Biomedical Engineering and Institute
for Complex Molecular Systems (ICMS), Eindhoven
University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Marc S. Robillard
- Tagworks
Pharmaceuticals, c/o Radboud University Medical Center, Department of Nuclear Medicine and Radiology, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Luc Brunsveld
- Laboratory
of Chemical Biology, Department of Biomedical Engineering and Institute
for Complex Molecular Systems (ICMS), Eindhoven
University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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Lebraud H, Noble RA, Phillips N, Heam K, Castro J, Zhao Y, Newell DR, Lunec J, Wedge SR, Heightman TD. Highly Potent Clickable Probe for Cellular Imaging of MDM2 and Assessing Dynamic Responses to MDM2-p53 Inhibition. Bioconjug Chem 2018; 29:2100-2106. [PMID: 29851469 DOI: 10.1021/acs.bioconjchem.8b00315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
MDM2 is a key negative regulator of the p53 tumor suppressor. Direct binding of MDM2 to p53 represses the protein's transcriptional activity and induces its polyubiquitination, targeting it for degradation by the proteasome. Consequently, small molecule inhibitors that antagonize MDM2-p53 binding, such as RG7388, have progressed into clinical development aiming to reactivate p53 function in TP53 wild-type tumors. Here, we describe the design, synthesis, and biological evaluation of a trans-cyclooctene tagged derivative of RG7388, RG7388-TCO, which showed high cellular potency and specificity for MDM2. The in-cell reaction of RG7388-TCO with a tetrazine-tagged BODIPY dye enabled fluorescence imaging of endogenous MDM2 in SJSA-1 and T778 tumor cells. RG7388-TCO was also used to pull down MDM2 by reaction with tetrazine-tagged agarose beads in SJSA-1 lysates. The data presented show that RG733-TCO enables precise imaging of MDM2 in cells and can permit a relative assessment of target engagement and MDM2-p53 antagonism in vitro.
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Affiliation(s)
- Honorine Lebraud
- Astex Pharmaceuticals , 436 Cambridge Science Park , Cambridge CB4 0QA , United Kingdom
| | - Richard A Noble
- Northern Institute for Cancer Research, Paul O'Gorman Building, Medical School , Newcastle University , Framlington Place , Newcastle-upon-Tyne NE2 4HH , United Kingdom
| | - Nicole Phillips
- Northern Institute for Cancer Research, Paul O'Gorman Building, Medical School , Newcastle University , Framlington Place , Newcastle-upon-Tyne NE2 4HH , United Kingdom
| | - Keisha Heam
- Astex Pharmaceuticals , 436 Cambridge Science Park , Cambridge CB4 0QA , United Kingdom
| | - Juan Castro
- Astex Pharmaceuticals , 436 Cambridge Science Park , Cambridge CB4 0QA , United Kingdom
| | - Yan Zhao
- Northern Institute for Cancer Research, Paul O'Gorman Building, Medical School , Newcastle University , Framlington Place , Newcastle-upon-Tyne NE2 4HH , United Kingdom
| | - David R Newell
- Northern Institute for Cancer Research, Paul O'Gorman Building, Medical School , Newcastle University , Framlington Place , Newcastle-upon-Tyne NE2 4HH , United Kingdom
| | - John Lunec
- Northern Institute for Cancer Research, Paul O'Gorman Building, Medical School , Newcastle University , Framlington Place , Newcastle-upon-Tyne NE2 4HH , United Kingdom
| | - Stephen R Wedge
- Northern Institute for Cancer Research, Paul O'Gorman Building, Medical School , Newcastle University , Framlington Place , Newcastle-upon-Tyne NE2 4HH , United Kingdom
| | - Tom D Heightman
- Astex Pharmaceuticals , 436 Cambridge Science Park , Cambridge CB4 0QA , United Kingdom
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Wang Y, Schill BD, Arif AM, West FG. Formal intermolecular 4 + 4 approach to cyclooctanoids: 4 + 3 capture of the Nazarov oxyallyl intermediate with simple 1,3-dienes. Org Lett 2003; 5:2747-50. [PMID: 12868905 DOI: 10.1021/ol034985b] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.8] [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: 11/30/2022]
Abstract
[reaction: see text] Simple 1,4-dien-3-ones and 1,3-dienes react in the presence of BF(3).OEt(2) via a domino Nazarov electrocyclization/intermolecular [4 + 3]-cycloaddition sequence to furnish keto-bridged cyclooctenes in good yield. Most cases showed high diastereofacial selectivity and/or endo/exo selectivity, and surprising levels of regioselectivity were observed when isoprene was used as the diene partner.
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Affiliation(s)
- Yong Wang
- Department of Chemistry, University of Utah, 315 S. 1400 East, Rm. 2020, Salt Lake City, Utah 84112-0850, USA
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