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Kanellopoulos P, Nock BA, Rouchota M, Loudos G, Krenning EP, Maina T. Side-Chain Modified [ 99mTc]Tc-DT1 Mimics: A Comparative Study in NTS 1R-Positive Models. Int J Mol Sci 2023; 24:15541. [PMID: 37958525 PMCID: PMC10647616 DOI: 10.3390/ijms242115541] [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: 10/07/2023] [Revised: 10/21/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Radiolabeled neurotensin analogs have been developed as candidates for theranostic use against neurotensin subtype 1 receptor (NTS1R)-expressing cancer. However, their fast degradation by two major peptidases, neprilysin (NEP) and angiotensin-converting enzyme (ACE), has hitherto limited clinical success. We have recently shown that palmitoylation at the ε-amine of Lys7 in [99mTc]Tc-[Lys7]DT1 (DT1, N4-Gly-Arg-Arg-Pro-Tyr-Ile-Leu-OH, N4 = 6-(carboxy)-1,4,8,11-tetraazaundecane) led to the fully stabilized [99mTc]Tc-DT9 analog, displaying high uptake in human pancreatic cancer AsPC-1 xenografts but unfavorable pharmacokinetics in mice. Aiming to improve the in vivo stability of [99mTc]Tc-DT1 without compromising pharmacokinetics, we now introduce three new [99mTc]Tc-DT1 mimics, carrying different pendant groups at the ε-amine of Lys7: MPBA (4-(4-methylphenyl)butyric acid)-[99mTc]Tc-DT10; MPBA via a PEG4-linker-[99mTc]Tc-DT11; or a hydrophilic PEG6 chain-[99mTc]Tc-DT12. The impact of these modifications on receptor affinity and internalization was studied in NTS1R-positive cells. The effects on stability and AsPC-1 tumor uptake were assessed in mice without or during NEP/ACE inhibition. Unlike [99mTc]Tc-DT10, the longer-chain modified [99mTc]Tc-DT11 and [99mTc]Tc-DT12 were significantly stabilized in vivo, resulting in markedly improved tumor uptake compared to [99mTc]Tc-DT1. [99mTc]Tc-DT11 was found to achieve the highest AsPC-1 tumor values and good pharmacokinetics, either without or during NEP inhibition, qualifying for further validation in patients with NTS1R-positive tumors using SPECT/CT.
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Affiliation(s)
| | - Berthold A. Nock
- Molecular Radiopharmacy, INRaSTES, NCSR “Demokritos”, 15341 Athens, Greece; (P.K.); (B.A.N.)
| | - Maritina Rouchota
- BIOEMTECH, Lefkippos Attica Technology Park NCSR “Demokritos”, 15310 Athens, Greece; (M.R.); (G.L.)
| | - George Loudos
- BIOEMTECH, Lefkippos Attica Technology Park NCSR “Demokritos”, 15310 Athens, Greece; (M.R.); (G.L.)
| | - Eric P. Krenning
- Cyclotron Rotterdam BV, Erasmus MC, 3015 CE Rotterdam, The Netherlands;
| | - Theodosia Maina
- Molecular Radiopharmacy, INRaSTES, NCSR “Demokritos”, 15341 Athens, Greece; (P.K.); (B.A.N.)
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2
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Cheng Z, Ma J, Yin L, Yu L, Yuan Z, Zhang B, Tian J, Du Y. Non-invasive molecular imaging for precision diagnosis of metastatic lymph nodes: opportunities from preclinical to clinical applications. Eur J Nucl Med Mol Imaging 2023; 50:1111-1133. [PMID: 36443568 DOI: 10.1007/s00259-022-06056-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 11/18/2022] [Indexed: 11/30/2022]
Abstract
Lymph node metastasis is an indicator of the invasiveness and aggressiveness of cancer. It is a vital prognostic factor in clinical staging of the disease and therapeutic decision-making. Patients with positive metastatic lymph nodes are likely to develop recurrent disease, distant metastasis, and succumb to death in the coming few years. Lymph node dissection and histological analysis are needed to detect whether regional lymph nodes have been infiltrated by cancer cells and determine the likely outcome of treatment and the patient's chances of survival. However, these procedures are invasive, and tissue biopsies are prone to sampling error. In recent years, advanced molecular imaging with novel imaging probes has provided new technologies that are contributing to comprehensive management of cancer, including non-invasive investigation of lymphatic drainage from tumors, identifying metastatic lymph nodes, and guiding surgeons to operate efficiently in patients with complex lesions. In this review, first, we outline the current status of different molecular imaging modalities applied for lymph node metastasis management. Second, we summarize the multi-functional imaging probes applied with the different imaging modalities as well as applications of cancer lymph node metastasis from preclinical studies to clinical translations. Third, we describe the limitations that must be considered in the field of molecular imaging for improved detection of lymph node metastasis. Finally, we propose future directions for molecular imaging technology that will allow more personalized treatment plans for patients with lymph node metastasis.
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Affiliation(s)
- Zhongquan Cheng
- Department of General Surgery, Capital Medical University, Beijing Friendship Hospital, Beijing, 100050, China.,CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiaojiao Ma
- Department of Medical Ultrasonics, China-Japan Friendship Hospital, Yinghua East Road 2#, ChaoYang Dist., Beijing, 100029, China
| | - Lin Yin
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100080, China
| | - Leyi Yu
- Department of General Surgery, Capital Medical University, Beijing Friendship Hospital, Beijing, 100050, China
| | - Zhu Yuan
- Department of General Surgery, Capital Medical University, Beijing Friendship Hospital, Beijing, 100050, China.
| | - Bo Zhang
- Department of Medical Ultrasonics, China-Japan Friendship Hospital, Yinghua East Road 2#, ChaoYang Dist., Beijing, 100029, China.
| | - Jie Tian
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China. .,Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Medicine Science and Engineering, Beihang University, Beijing, 100191, China.
| | - Yang Du
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China. .,University of Chinese Academy of Sciences, Beijing, 100080, China.
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3
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Moon OJ, Yoon CJ, Lee BR, Lee J. An Optimally Fabricated Platform Guides Cancer-Specific Activation of Chemotherapeutic Drugs and Toxicity-free Cancer Treatment. Adv Healthc Mater 2022; 11:e2200765. [PMID: 35670274 DOI: 10.1002/adhm.202200765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/12/2022] [Indexed: 11/08/2022]
Abstract
Cancer chemotherapeutic drugs such as doxorubicin, mitomycin C, and gemcitabine, which are mostly small synthetic molecules, are still clinically useful for cancer treatment. However, despite considerable therapeutic efficacy, severe toxicity-associated problems, which are mainly caused by the non-specific mode of action such as chromosomal DNA damage and interference in the DNA replication even in normal cells, remain unresolved and a major challenge for safer and thus more widespread adoption of chemotherapy. Here we developed an innovative platform through beneficially integrating core peptide units into highly-ordered, stable, and flexibly guest-adaptable structure of apoferritin, which simultaneously fulfills high-capacity loading of chemotherapeutic drugs compared with the case of FDA-approved antibody-drug conjugates, efficient drug targeting to cancer cells, and cancer cell-specific drug release and activation. This approach dramatically reduced drug toxicity to normal cells, significantly enhanced efficacy in in vivo cancer treatment without toxicity to normal organs of mice, and thus is expected to open up a novel clinical route to break through the limits of current cancer chemotherapy. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ok Jeong Moon
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Anam-Ro 145, Seoul, 136-713, Republic of Korea
| | - Chul Joo Yoon
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Anam-Ro 145, Seoul, 136-713, Republic of Korea
| | - Bo-Ram Lee
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Anam-Ro 145, Seoul, 136-713, Republic of Korea
| | - Jeewon Lee
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Anam-Ro 145, Seoul, 136-713, Republic of Korea
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4
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van Dam MA, Vuijk FA, Stibbe JA, Houvast RD, Luelmo SAC, Crobach S, Shahbazi Feshtali S, de Geus-Oei LF, Bonsing BA, Sier CFM, Kuppen PJK, Swijnenburg RJ, Windhorst AD, Burggraaf J, Vahrmeijer AL, Mieog JSD. Overview and Future Perspectives on Tumor-Targeted Positron Emission Tomography and Fluorescence Imaging of Pancreatic Cancer in the Era of Neoadjuvant Therapy. Cancers (Basel) 2021; 13:6088. [PMID: 34885196 PMCID: PMC8656821 DOI: 10.3390/cancers13236088] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/25/2021] [Accepted: 11/28/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Despite recent advances in the multimodal treatment of pancreatic ductal adenocarcinoma (PDAC), overall survival remains poor with a 5-year cumulative survival of approximately 10%. Neoadjuvant (chemo- and/or radio-) therapy is increasingly incorporated in treatment strategies for patients with (borderline) resectable and locally advanced disease. Neoadjuvant therapy aims to improve radical resection rates by reducing tumor mass and (partial) encasement of important vascular structures, as well as eradicating occult micrometastases. Results from recent multicenter clinical trials evaluating this approach demonstrate prolonged survival and increased complete surgical resection rates (R0). Currently, tumor response to neoadjuvant therapy is monitored using computed tomography (CT) following the RECIST 1.1 criteria. Accurate assessment of neoadjuvant treatment response and tumor resectability is considered a major challenge, as current conventional imaging modalities provide limited accuracy and specificity for discrimination between necrosis, fibrosis, and remaining vital tumor tissue. As a consequence, resections with tumor-positive margins and subsequent early locoregional tumor recurrences are observed in a substantial number of patients following surgical resection with curative intent. Of these patients, up to 80% are diagnosed with recurrent disease after a median disease-free interval of merely 8 months. These numbers underline the urgent need to improve imaging modalities for more accurate assessment of therapy response and subsequent re-staging of disease, thereby aiming to optimize individual patient's treatment strategy. In cases of curative intent resection, additional intra-operative real-time guidance could aid surgeons during complex procedures and potentially reduce the rate of incomplete resections and early (locoregional) tumor recurrences. In recent years intraoperative imaging in cancer has made a shift towards tumor-specific molecular targeting. Several important molecular targets have been identified that show overexpression in PDAC, for example: CA19.9, CEA, EGFR, VEGFR/VEGF-A, uPA/uPAR, and various integrins. Tumor-targeted PET/CT combined with intraoperative fluorescence imaging, could provide valuable information for tumor detection and staging, therapy response evaluation with re-staging of disease and intraoperative guidance during surgical resection of PDAC. METHODS A literature search in the PubMed database and (inter)national trial registers was conducted, focusing on studies published over the last 15 years. Data and information of eligible articles regarding PET/CT as well as fluorescence imaging in PDAC were reviewed. Areas covered: This review covers the current strategies, obstacles, challenges, and developments in targeted tumor imaging, focusing on the feasibility and value of PET/CT and fluorescence imaging for integration in the work-up and treatment of PDAC. An overview is given of identified targets and their characteristics, as well as the available literature of conducted and ongoing clinical and preclinical trials evaluating PDAC-targeted nuclear and fluorescent tracers.
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Affiliation(s)
- Martijn A. van Dam
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
| | - Floris A. Vuijk
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
| | - Judith A. Stibbe
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
| | - Ruben D. Houvast
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
| | - Saskia A. C. Luelmo
- Department of Medical Oncology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands;
| | - Stijn Crobach
- Department of Pathology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands;
| | | | - Lioe-Fee de Geus-Oei
- Department of Radiology, Section of Nuclear Medicine, University Medical Center Leiden, 2333 ZA Leiden, The Netherlands;
- Biomedical Photonic Imaging Group, University of Twente, 7522 NB Enschede, The Netherlands
| | - Bert A. Bonsing
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
| | - Cornelis F. M. Sier
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
- Percuros B.V., 2333 CL Leiden, The Netherlands
| | - Peter J. K. Kuppen
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
| | | | - Albert D. Windhorst
- Department of Radiology, Section of Nuclear Medicine, Amsterdam UMC, Location VUmc, 1081 HV Amsterdam, The Netherlands;
| | - Jacobus Burggraaf
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
- Centre for Human Drug Research, 2333 CL Leiden, The Netherlands
| | - Alexander L. Vahrmeijer
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
| | - J. Sven D. Mieog
- Department of Surgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands; (F.A.V.); (J.A.S.); (R.D.H.); (B.A.B.); (C.F.M.S.); (P.J.K.K.); (J.B.); (A.L.V.); (J.S.D.M.)
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5
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Ghidini M, Vuozzo M, Galassi B, Mapelli P, Ceccarossi V, Caccamo L, Picchio M, Dondossola D. The Role of Positron Emission Tomography/Computed Tomography (PET/CT) for Staging and Disease Response Assessment in Localized and Locally Advanced Pancreatic Cancer. Cancers (Basel) 2021; 13:4155. [PMID: 34439307 PMCID: PMC8394552 DOI: 10.3390/cancers13164155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/03/2021] [Accepted: 08/16/2021] [Indexed: 11/25/2022] Open
Abstract
Pancreatic Cancer (PC) has a poor prognosis, with a 5-year survival rate of only 9%. Even after radical surgical procedures, PC patients have poor survival rates, with a high chance of relapse (70-80%). Imaging is involved in all aspects of the clinical management of PC, including detection and characterization of primary tumors and their resectability, assessment of vascular, perineural and lymphatic invasion and detection of distant metastases. The role of Positron Emission Tomography/Computed Tomography (PET/CT) in detecting PC is still controversial, with the international guidelines not recommending its routine use. However, in resectable PC, PET/CT may play a role in assessing PC stage and grade and potential resectability after neoadjuvant treatment. Quantitative image analysis (radiomics) and new PET/CT radiotracers account for future developments in metabolic imaging and may further improve the relevance of this technique in several aspects of PC. In the present review, the current state of the art and future directions of PET/CT in resectable PC are presented.
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Affiliation(s)
- Michele Ghidini
- Operative Unit of Oncology, Internal Medicine, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Marta Vuozzo
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany;
- University Medical Center, Eberhard Karls University Tübingen, 72074 Tübingen, Germany
| | - Barbara Galassi
- Operative Unit of Oncology, Internal Medicine, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Paola Mapelli
- Vita-Salute San Raffaele University, 20132 Milan, Italy; (P.M.); (M.P.)
- Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Virginia Ceccarossi
- Dipartimento di Chirurgia Generale e dei Trapianti di Fegato, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (V.C.); (L.C.); (D.D.)
- Dipartimento di Fisiopatologia Medico-Chirurgica e dei Trapianti, Università degli Studi di Milano, 20122 Milan, Italy
| | - Lucio Caccamo
- Dipartimento di Chirurgia Generale e dei Trapianti di Fegato, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (V.C.); (L.C.); (D.D.)
| | - Maria Picchio
- Vita-Salute San Raffaele University, 20132 Milan, Italy; (P.M.); (M.P.)
- Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Daniele Dondossola
- Dipartimento di Chirurgia Generale e dei Trapianti di Fegato, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (V.C.); (L.C.); (D.D.)
- Dipartimento di Fisiopatologia Medico-Chirurgica e dei Trapianti, Università degli Studi di Milano, 20122 Milan, Italy
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6
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González-Gómez R, Pazo-Cid RA, Sarría L, Morcillo MÁ, Schuhmacher AJ. Diagnosis of Pancreatic Ductal Adenocarcinoma by Immuno-Positron Emission Tomography. J Clin Med 2021; 10:1151. [PMID: 33801810 PMCID: PMC8000738 DOI: 10.3390/jcm10061151] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/26/2021] [Accepted: 03/02/2021] [Indexed: 12/15/2022] Open
Abstract
Diagnosis of pancreatic ductal adenocarcinoma (PDAC) by current imaging techniques is useful and widely used in the clinic but presents several limitations and challenges, especially in small lesions that frequently cause radiological tumors infra-staging, false-positive diagnosis of metastatic tumor recurrence, and common occult micro-metastatic disease. The revolution in cancer multi-"omics" and bioinformatics has uncovered clinically relevant alterations in PDAC that still need to be integrated into patients' clinical management, urging the development of non-invasive imaging techniques against principal biomarkers to assess and incorporate this information into the clinical practice. "Immuno-PET" merges the high target selectivity and specificity of antibodies and engineered fragments toward a given tumor cell surface marker with the high spatial resolution, sensitivity, and quantitative capabilities of positron emission tomography (PET) imaging techniques. In this review, we detail and provide examples of the clinical limitations of current imaging techniques for diagnosing PDAC. Furthermore, we define the different components of immuno-PET and summarize the existing applications of this technique in PDAC. The development of novel immuno-PET methods will make it possible to conduct the non-invasive diagnosis and monitoring of patients over time using in vivo, integrated, quantifiable, 3D, whole body immunohistochemistry working like a "virtual biopsy".
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Affiliation(s)
- Ruth González-Gómez
- Molecular Oncology Group, Instituto de Investigación Sanitaria Aragón (IIS Aragón), 50009 Zaragoza, Spain;
| | - Roberto A. Pazo-Cid
- Medical Oncology Unit, Hospital Universitario Miguel Servet, 50009 Zaragoza, Spain;
| | - Luis Sarría
- Digestive Radiology Unit, Hospital Universitario Miguel Servet, 50009 Zaragoza, Spain;
| | - Miguel Ángel Morcillo
- Biomedical Application of Radioisotopes and Pharmacokinetics Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain
| | - Alberto J. Schuhmacher
- Molecular Oncology Group, Instituto de Investigación Sanitaria Aragón (IIS Aragón), 50009 Zaragoza, Spain;
- Fundación Aragonesa para la Investigación y el Desarrollo (ARAID), 50018 Zaragoza, Spain
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7
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Li M, Wei W, Barnhart TE, Jiang D, Cao T, Fan K, Engle JW, Liu J, Chen W, Cai W. ImmunoPET/NIRF/Cerenkov multimodality imaging of ICAM-1 in pancreatic ductal adenocarcinoma. Eur J Nucl Med Mol Imaging 2021; 48:2737-2748. [PMID: 33537836 DOI: 10.1007/s00259-021-05216-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 01/24/2021] [Indexed: 12/20/2022]
Abstract
PURPOSE We dual-labeled an intercellular adhesion molecule-1 (ICAM-1) monoclonal antibody (mAb) and evaluated its effectiveness for lesion detection and surgical navigation in pancreatic ductal adenocarcinoma (PDAC) via multiple noninvasive imaging approaches, including positron emission tomography (PET), near-infrared fluorescence (NIRF), and Cerenkov luminescence imaging (CLI). METHODS ICAM-1 expression in PDAC cell lines (BxPC-3 and AsPC-1) was assessed via flow cytometry and immunofluorescent staining. An ICAM-1 mAb labeled by IRDye 800CW and radionuclide zirconium-89 (denoted as [89Zr]Zr-DFO-ICAM-1-IR800) was synthesized. Its performance was validated via in vivo comparative PET/NIRF/CLI and biodistribution (Bio-D) studies in nude mice bearing subcutaneous BxPC-3/AsPC-1 tumors or orthotopic BxPC-3 tumor models using nonspecific IgG as an isotype control tracer. RESULTS ICAM-1 expression was strong in the BxPC-3 and minimal in the AsPC-1 cell line. Both multimodality imaging and Bio-D data exhibited more prominent uptake of [89Zr]Zr-DFO-ICAM-1-IR800 in BxPC-3 tumors than in AsPC-1 tumors. The uptake of [89Zr]Zr-DFO-IgG-IR800 in BxPC-3 tumors was similar to that of [89Zr]Zr-DFO-ICAM-1-IR800 in AsPC-1 tumors. These results demonstrate the desirable affinity and specificity of [89Zr]Zr-DFO-ICAM-1-IR800 compared to [89Zr]Zr-DFO-IgG-IR800. Orthotopic BxPC-3 tumor foci could also be clearly delineated by [89Zr]Zr-DFO-ICAM-1-IR800. An intermodal match was achieved in the ICAM-1-targeted immunoPET/NIRF/CLI. The positive expression levels of ICAM-1 in BxPC-3 tumor tissue were further confirmed by immunohistopathology. CONCLUSION We successfully developed a dual-labeled ICAM-1-targeted tracer for PET/NIRF/CLI of PDAC that can facilitate better diagnosis and intervention of PDAC upon clinical translation.
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Affiliation(s)
- Miao Li
- Department of Radiology, the First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Rd, Xi'an, 710061, Shaanxi, China.,Department of Radiology, University of Wisconsin-Madison, Room 7137, 1111 Highland Ave, Madison, WI, 53705, USA
| | - Weijun Wei
- Department of Radiology, University of Wisconsin-Madison, Room 7137, 1111 Highland Ave, Madison, WI, 53705, USA.,Department of Nuclear Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 Dongfang Rd, Shanghai, 200127, China
| | - Todd E Barnhart
- Department of Medical Physics, University of Wisconsin-Madison, Room B1143, 1111 Highland Ave, Madison, WI, 53705, USA
| | - Dawei Jiang
- Department of Radiology, University of Wisconsin-Madison, Room 7137, 1111 Highland Ave, Madison, WI, 53705, USA
| | - Tianye Cao
- Department of Radiology, University of Wisconsin-Madison, Room 7137, 1111 Highland Ave, Madison, WI, 53705, USA
| | - Kevin Fan
- Department of Radiology, University of Wisconsin-Madison, Room 7137, 1111 Highland Ave, Madison, WI, 53705, USA
| | - Jonathan W Engle
- Department of Medical Physics, University of Wisconsin-Madison, Room B1143, 1111 Highland Ave, Madison, WI, 53705, USA
| | - Jianjun Liu
- Department of Nuclear Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 1630 Dongfang Rd, Shanghai, 200127, China
| | - Weiyu Chen
- Department of Radiology, University of Wisconsin-Madison, Room 7137, 1111 Highland Ave, Madison, WI, 53705, USA.
| | - Weibo Cai
- Department of Radiology, University of Wisconsin-Madison, Room 7137, 1111 Highland Ave, Madison, WI, 53705, USA. .,Department of Medical Physics, University of Wisconsin-Madison, Room B1143, 1111 Highland Ave, Madison, WI, 53705, USA.
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8
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Wang T, Peng Y, Li R, Li X, Zuo C. Preliminary study on SPECT/CT imaging of pancreatic cancer xenografts by targeting integrin α5 in pancreatic stellate cells. J Cancer 2021; 12:1729-1733. [PMID: 33613761 PMCID: PMC7890318 DOI: 10.7150/jca.51190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 12/26/2020] [Indexed: 11/21/2022] Open
Abstract
Background: Integrin α5 (ITGA5) is overexpressed specifically in pancreatic cancer stroma, specially, in the activated pancreatic stellate cells (PSCs). Molecular imaging of pancreatic cancer via targeting PSCs has its advantages. Purpose: This study aims to investigate the feasibility of ITGA5-targeted SPECT/CT imaging of pancreatic cancer by targeting PSCs. Methods: ITGA5 expression in PSCs treated without or with pancreatic cancer SW1990 cells conditioned medium (SW1990-CM) was assessed by western blotting and immunofluorescence staining. ITGA5 specific inhibitor AV3 peptide was radiolabeled with 125I to synthesize 125I-AV3, and the labeling rate, in vitro stability and cellular uptake were further investigated. SW1990 cells alone or with PSCs were injected subcutaneously on the left and right lower limbs of nude mice respectively to establish pancreatic cancer xenograft model, and then 125I-AV3 SPECT/CT imaging of pancreatic cancer-bearing nude mice was performed. The expression of ITGA5 in tumors was detected by immunohistochemical (IHC) staining. Results:125I-AV3 has an excellent labeling rate and good in vitro stability. After treated with SW1990-CM, PSCs had an increased expression of ITGA5 and higher 125I-AV3 uptake. SPECT/CT imaging study showed that 125I-AV3 was mainly accumulated in the right xenografts (co-injection of cancer cells and PSCs), while the left xenografts tumors have a poor imaging. Moreover, the uptake of radiotracer in both side tumors was inhibited significantly after the non-radiolabeled AV3 pretreatment. IHC staining showed that SW1990 + PSCs tumor has a higher positive rate of ITGA5 than SW1990 tumor. Conclusion: The preliminary study suggests that 125I-AV3 can be used for SPECT/CT imaging of pancreatic cancer via targeting ITGA5 in PSCs, which is independent of the state of cancer cells and may have a special meaning.
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Affiliation(s)
- Tao Wang
- Department of Nuclear Medicine, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Ye Peng
- Department of Nuclear Medicine, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Rou Li
- Department of Nuclear Medicine, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Xiao Li
- Department of Nuclear Medicine, Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Changjing Zuo
- Department of Nuclear Medicine, Changhai Hospital, Naval Medical University, Shanghai 200433, China
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9
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Torres JB, Mosley M, Koustoulidou S, Hopkins S, Knapp S, Chaikuad A, Kondoh M, Tachibana K, Kersemans V, Cornelissen B. Radiolabeled cCPE Peptides for SPECT Imaging of Claudin-4 Overexpression in Pancreatic Cancer. J Nucl Med 2020; 61:1756-1763. [PMID: 32414951 PMCID: PMC8679629 DOI: 10.2967/jnumed.120.243113] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/16/2020] [Indexed: 01/09/2023] Open
Abstract
Overexpression of tight-junction protein claudin-4 has been detected in primary and metastatic pancreatic cancer tissue and is associated with better prognosis in patients. Noninvasive measurement of claudin-4 expression by imaging methods could provide a means for accelerating detection and stratifying patients into risk groups. Clostridium perfringens enterotoxin (CPE) is a natural ligand for claudin-4 and holds potential as a targeting vector for molecular imaging of claudin-4 overexpression. A glutathione S-transferases (GST)-tagged version of the C terminus of CPE (cCPE) was previously used to delineate claudin-4 overexpression by SPECT but showed modest binding affinity and slow blood clearance in vivo. Methods: On the basis of the crystal structure of cCPE, a series of smaller cCPE194-319 mutants with putatively improved binding affinity for claudin-4 was generated by site-directed mutagenesis. All peptides were conjugated site-specifically on a C-terminal cysteine using maleimide-diethylenetriamine pentaacetate to enable radiolabeling with 111In. The binding affinity of all radioconjugates was evaluated in claudin-4-expressing PSN-1 cells and HT1080-negative controls. The specificity of all cCPE mutants to claudin-4 was assessed in HT1080 cells stably transfected with claudin-4. SPECT/CT imaging of BALB/c nude mice bearing PSN-1 or HT1080 tumor xenografts was performed to determine the claudin-4-targeting ability of these peptides in vivo. Results: Uptake of all cCPE-based radioconjugates was significantly higher in PSN-1 cells than in HT1080-negative controls. All peptides showed a marked improvement in affinity for claudin-4 in vitro when compared with previously reported values (dissociation constant: 2.2 ± 0.8, 3 ± 0.1, 4.2 ± 0.5, 10 ± 0.9, and 9.7 ± 0.7 nM). Blood clearance of [111In]In-cCPE194-319, as measured by SPECT, was considerably faster than that of [111In]In-cCPE.GST (half-life, <1 min). All radiopeptides showed significantly higher accumulation in PSN-1 xenografts than in HT1080 tumors at 90 min after injection of the tracer ([111In]In-cCPE194-319, 2.7 ± 0.8 vs. 0.4 ± 0.1 percentage injected dose per gram [%ID/g], P < 0.001; [111In]In-S313A, 2.3 ± 0.9 vs. 0.5 ± 0.1 %ID/g, P < 0.01; [111In]In-S307A + N309A + S313A, 2 ± 0.4 vs. 0.3 ± 0.1 %ID/g, P < 0.01; [111In]In-D284A, 2 ± 0.2 vs. 0.7 ± 0.1 %ID/g, P < 0.05; [111In]In-L254F + K257D, 6.3 ± 0.9 vs. 0.7 ± 0.2 %ID/g, P < 0.001). Conclusion: These optimized cCPE-based SPECT imaging agents show great promise as claudin-4-targeting vectors for in vivo imaging of claudin-4 overexpression in pancreatic cancer.
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Affiliation(s)
- Julia Baguña Torres
- Cancer Research United Kingdom and Medical Research Council Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Michael Mosley
- Cancer Research United Kingdom and Medical Research Council Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Sofia Koustoulidou
- Cancer Research United Kingdom and Medical Research Council Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Samantha Hopkins
- Cancer Research United Kingdom and Medical Research Council Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Stefan Knapp
- Institute of Pharmaceutical Chemistry and Structure Genomics Consortium, Goethe-University Frankfurt, Frankfurt am Main, Germany
- German Cancer Network, Mainz-Frankfurt, Germany; and
| | - Apirat Chaikuad
- Institute of Pharmaceutical Chemistry and Structure Genomics Consortium, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Masuo Kondoh
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka, Suita, Osaka, Japan
| | - Keisuke Tachibana
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka, Suita, Osaka, Japan
| | - Veerle Kersemans
- Cancer Research United Kingdom and Medical Research Council Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Bart Cornelissen
- Cancer Research United Kingdom and Medical Research Council Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
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Kanellopoulos P, Nock BA, Krenning EP, Maina T. Optimizing the Profile of [ 99mTc]Tc-NT(7-13) Tracers in Pancreatic Cancer Models by Means of Protease Inhibitors. Int J Mol Sci 2020; 21:ijms21217926. [PMID: 33114537 PMCID: PMC7663772 DOI: 10.3390/ijms21217926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/22/2020] [Accepted: 10/24/2020] [Indexed: 12/17/2022] Open
Abstract
Background: The overexpression of neurotensin subtype 1 receptors (NTS1Rs) in human tumors may be elegantly exploited for directing neurotensin (NT)-based radionuclide carriers specifically to cancer sites for theranostic purposes. We have recently shown that [99mTc]Tc–DT1 ([99mTc]Tc–[N4–Gly7]NT(7–13)) and [99mTc]Tc–DT5 ([99mTc]Tc–[N4–βAla7,Dab9]NT(7–13)) show notably improved uptake in human colon adenocarcinoma WiDr xenografts in mice treated with neprilysin (NEP) inhibitors and/or angiotensin-converting enzyme (ACE) inhibitors compared with untreated controls. Aiming toward translation of this promising approach in NTS1R-positive pancreatic ductal adenocarcinoma (PDAC) patients, we now report on the impact of registered NEP/ACE inhibitors on the performance of [99mTc]Tc–DT1 and [99mTc]Tc–DT5 in pancreatic cancer models. Methods: The cellular uptake of [99mTc]Tc–DT1 and [99mTc]Tc–DT5 was tested in a panel of pancreatic cell lines, and their stability was assessed in mice treated or not treated with Entresto, lisinopril, or their combinations. Biodistribution was conducted in severe combined immunodeficiency (SCID) mice bearing pancreatic AsPC-1 xenografts. Results: The Entresto + lisinopril combination maximized the metabolic stability of the fast-internalizing [99mTc]Tc–DT1 in mice, resulting in notably enhanced tumor uptake (7.05 ± 0.80% injected activity (IA)/g vs. 1.25 ± 0.80% IA/g in non-treated controls at 4 h post-injection; p < 0.0001). Conclusions: This study has shown the feasibility of optimizing the uptake of [99mTc]Tc–DT1 in pancreatic cancer models with the aid of clinically established NEP/ACE inhibitors, in favor of clinical translation prospects.
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Affiliation(s)
- Panagiotis Kanellopoulos
- Molecular Radiopharmacy, INRASTES, NCSR “Demokritos”, 15341 Athens, Greece;
- Molecular Pharmacology, School of Medicine, University of Crete, Heraklion, 70013 Crete, Greece
- Correspondence: (P.K.); (T.M.); Tel.: +30-210-650-3891 (P.K.); +30-210-650-3908 (T.M.)
| | - Berthold A. Nock
- Molecular Radiopharmacy, INRASTES, NCSR “Demokritos”, 15341 Athens, Greece;
| | - Eric P. Krenning
- Cyclotron Rotterdam BV, Erasmus MC, 3015 CE Rotterdam, The Netherlands;
| | - Theodosia Maina
- Molecular Radiopharmacy, INRASTES, NCSR “Demokritos”, 15341 Athens, Greece;
- Correspondence: (P.K.); (T.M.); Tel.: +30-210-650-3891 (P.K.); +30-210-650-3908 (T.M.)
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11
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Mosley M, Baguña Torres J, Allen D, Cornelissen B. Immuno-imaging of ICAM-1 in tumours by SPECT. Nucl Med Biol 2020; 84-85:73-79. [PMID: 32135474 PMCID: PMC7294224 DOI: 10.1016/j.nucmedbio.2020.02.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 02/24/2020] [Accepted: 02/24/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE Molecular imaging of cancer cells' reaction to radiation damage can provide a non-invasive measure of tumour response to treatment. The cell surface glycoprotein ICAM-1 (CD54) was identified as a potential radiation response marker. SPECT imaging using an 111In-radiolabelled anti-ICAM-1 antibody was explored. METHODS PSN-1 cells were irradiated (10 Gy), and protein expression changes were investigated using an antibody array on cell lysates 24 h later. Results were confirmed by western blot, flow cytometry and immunofluorescence. We confirmed the affinity of an 111In-labelled anti-ICAM-1 antibody in vitro, and in vivo, in PSN-1-xenograft bearing mice. The xenografts were irradiated (0 or 10 Gy), and [111In]In-anti-ICAM-1 SPECT/CT images were acquired 24, 48 and 72 h after intravenous administration. RESULTS ICAM-1 was identified as a potential marker of radiation treatment using an antibody array in PSN-1 cell lysates following irradiation, showing a significant increase in ICAM-1 signal compared to non-irradiated cells. Western blot and immunohistochemistry confirmed this upregulation, with an up to 20-fold increase in ICAM-1 signal. Radiolabelled anti-ICAM-1 bound to ICAM-1 expressing cells with good affinity (Kd = 24.0 ± 4.0 nM). [111In]In-anti-ICAM-1 uptake in tumours at 72 h post injection was approximately 3-fold higher than non-specific isotype-matched [111In]In-mIgG2a control (19.3 ± 2.5%ID/g versus 6.3 ± 2.2%ID/g, P = 0.0002). However, ICAM1 levels, and [111In]In-anti-ICAM-1 uptake in tumours was no different after irradiation (uptake 9.2%ID/g versus 14.8%ID/g). Western blots of the xenograft lysates showed no significant differences, confirming these results. CONCLUSION Imaging of ICAM-1 is feasible in mouse models of pancreatic cancer. Although ICAM-1 is upregulated post-irradiation in in vitro models of pancreatic cancer, it shows little change in expression in an in vivo mouse xenograft model.
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Affiliation(s)
- Michael Mosley
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom of Great Britain and Northern Ireland
| | - Julia Baguña Torres
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom of Great Britain and Northern Ireland
| | - Danny Allen
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom of Great Britain and Northern Ireland
| | - Bart Cornelissen
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, United Kingdom of Great Britain and Northern Ireland.
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12
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Ui T, Ueda M, Higaki Y, Kamino S, Sano K, Kimura H, Saji H, Enomoto S. Development and characterization of a 68Ga-labeled A20FMDV2 peptide probe for the PET imaging of αvβ6 integrin-positive pancreatic ductal adenocarcinoma. Bioorg Med Chem 2020; 28:115189. [PMID: 31740201 DOI: 10.1016/j.bmc.2019.115189] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/25/2019] [Accepted: 10/27/2019] [Indexed: 01/29/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is known to be one of the most lethal cancers. Since the majority of patients are diagnosed at an advanced stage, development of a detection method for PDAC at an earlier stage of disease progression is strongly desirable. Integrin αVβ6 is a promising target for early PDAC detection because its expression increases during precancerous changes. The present study aimed to develop an imaging probe for positron emission tomography (PET) which targets αVβ6 integrin-positive PDAC. We selected A20FMDV2 peptide, which binds specifically to αvβ6 integrin, as a probe scaffold, and 68Ga as a radioisotope. A20FMDV2 peptide has not been previously labeled with 68Ga. A cysteine residue was introduced to the N-terminus of the probe at a site-specific conjugation of maleimide-NOTA (mal-NOTA) chelate. Different numbers of glycine residues were also introduced between cysteine and the A20FMDV2 sequence as a spacer in order to reduce the steric hindrance of the mal-NOTA on the binding probe to αVβ6 integrin. In vitro, the competitive binding assay revealed that probes containing a 6-glycine linker ([natGa]CG6 and [natGa]Ac-CG6) showed high affinity to αVβ6 integrin. Both probes could be labeled by 67/68Ga with high radiochemical yield (>50%) and purity (>98%). On biodistribution analysis, [67Ga]Ac-CG6 showed higher tumor accumulation, faster blood clearance, and lower accumulation in the surrounding organs of pancreas than did [67Ga]CG6. The αVβ6 integrin-positive xenografts were clearly visualized by PET imaging with [68Ga]Ac-CG6. The intratumoral distribution of [68Ga]Ac-CG6 coincided with the αVβ6 integrin-positive regions detected by immunohistochemistry. Thus, [68Ga]Ac-CG6 is a useful peptide probe for the imaging of αVβ6 integrin in PDAC.
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Affiliation(s)
- Takashi Ui
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Masashi Ueda
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
| | - Yusuke Higaki
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Shinichiro Kamino
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Kohei Sano
- Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroyuki Kimura
- Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hideo Saji
- Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shuichi Enomoto
- RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
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13
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Qiu W, Zhang H, Chen X, Song L, Cui W, Ren S, Wang Y, Guo K, Li D, Chen R, Wang Z. A GPC1-targeted and gemcitabine-loaded biocompatible nanoplatform for pancreatic cancer multimodal imaging and therapy. Nanomedicine (Lond) 2019; 14:2339-2353. [PMID: 31414945 DOI: 10.2217/nnm-2019-0063] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim: Biomarker-targeted nanocarrier holds promise for early diagnosis and effective therapy of cancer. Materials & methods: This work successfully designs and evaluates GPC1-targeted, gemcitabine (GEM)-loaded multifunctional gold nanocarrier for near-infrared fluorescence (NIRF)/MRI and targeted chemotherapy against pancreatic cancer in vitro and in vivo. Results: Blood biochemical and histological analyses show that the in vivo toxicity of GPC1-GEM-nanoparticles (NPs) was negligible. Both in vitro and in vivo studies demonstrate that GPC1-GEM-NPs can be used as NIRF/MR contrast agent for pancreatic cancer detection. Treatment of xenografted mice with GPC1-GEM-NPs shows a higher tumor inhibitory effect compared with controls. Conclusion: This novel theranostic nanoplatform provides early diagnostic and effective therapeutic potential for pancreatic cancer.
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Affiliation(s)
- Wenli Qiu
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Huifeng Zhang
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Xiao Chen
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Lina Song
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Wenjing Cui
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Shuai Ren
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Yajie Wang
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Kai Guo
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Donghui Li
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Rong Chen
- Department of Diagnostic Radiology & Nuclear Medicine, University of Maryland School of Medicine, MD 21201, USA
| | - Zhongqiu Wang
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
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14
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Prignon A, Provost C, Alshoukr F, Wendum D, Couvelard A, Barbet J, Forgez P, Talbot JN, Gruaz-Guyon A. Preclinical Evaluation of 68Ga-DOTA-NT-20.3: A Promising PET Imaging Probe To Discriminate Human Pancreatic Ductal Adenocarcinoma from Pancreatitis. Mol Pharm 2019; 16:2776-2784. [PMID: 31013092 DOI: 10.1021/acs.molpharmaceut.9b00283] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Neurotensin receptor 1 (NTSR1) is overexpressed in human pancreatic ductal adenocarcinoma (PDAC). Specific noninvasive positron-emission tomography (PET) imaging probes may improve the diagnostic accuracy and the monitoring of therapy for patients with PDAC. Here, we report the use of the 68Ga-labeled neurotensin (NTS) analogue DOTA-NT-20.3 to image human PDAC in animal models and to discriminate tumors from pancreatitis. In addition to the preclinical study, two tissue microarray slides, constructed by small core biopsies (2-5) from standard paraffin-embedded tumor tissues, were used to confirm the high (78%) positivity rate of NTSR1 expression in human PDAC. PET imaging, biodistribution, blocking, and histology studies were performed in subcutaneous AsPC-1 pancreatic tumor-bearing mice. 68Ga-DOTA-NT-20.3 PET images showed rapid tumor uptake and high contrast between the tumor and background with a fast blood clearance and a moderate accumulation in the kidneys. Ex vivo biodistribution showed low uptake in normal pancreas (0.22% IA/g) and in the remaining organs at 1 h postinjection, kidney retention (5.38 ± 0.54% IA/g), and fast clearance from blood and confirmed high uptake in tumors (5.28 ± 0.93% IA/g), leading to a tumor-to-blood ratio value of 6 at 1 h postinjection. The significant decrease of tumor uptake in a blocking study demonstrated the specificity of 68Ga-DOTA-N-T20.3 to target NTSR1 in vivo. PET imaging was also conducted in an orthotopic xenograft model that allows tumors to grow in their native microenvironment and in an experimental pancreatitis model generated by caerulein injections. As opposed to 2-[18F]fluoro-deoxyglucose, 68Ga-DOTA-NT-20.3 distinguishes PDAC from pancreatitis. Thus, 68Ga-DOTA-NT-20.3 is a promising PET imaging probe for imaging PDAC in humans.
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Affiliation(s)
- Aurélie Prignon
- Sorbonne Université, UMS28 Phénotypage du Petit Animal, Laboratoire d'Imagerie Moléculaire Positonique (LIMP) , Paris 75020 , France
| | - Claire Provost
- Sorbonne Université, UMS28 Phénotypage du Petit Animal, Laboratoire d'Imagerie Moléculaire Positonique (LIMP) , Paris 75020 , France
| | - Faisal Alshoukr
- Nuclear Medicine Department , CHR de Metz-Thionville , Thionville 57100 , France
| | - Dominique Wendum
- Sorbonne Université, Pathology Department Saint-Antoine Hospital AP-HP , Paris 75012 , France
| | - Anne Couvelard
- University of Paris, Pathology Department Bichat Hospital AP-HP , Paris 75006 , France
| | | | - Patricia Forgez
- Inserm UMRS 1007, Paris Descartes University , Paris 75006 , France
| | - Jean-Noël Talbot
- Sorbonne Université, UMS28 Phénotypage du Petit Animal, Laboratoire d'Imagerie Moléculaire Positonique (LIMP) , Paris 75020 , France
- Sorbonne Université, Nuclear Medicine Department Tenon Hospital AP-HP , Paris 75020 , France
| | - Anne Gruaz-Guyon
- Sorbonne Université, UMS28 Phénotypage du Petit Animal, Laboratoire d'Imagerie Moléculaire Positonique (LIMP) , Paris 75020 , France
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