951
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Dubach J, Vinegoni C, Mazitschek R, Fumene Feruglio P, Cameron L, Weissleder R. In vivo imaging of specific drug-target binding at subcellular resolution. Nat Commun 2014; 5:3946. [PMID: 24867710 PMCID: PMC4362617 DOI: 10.1038/ncomms4946] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 04/23/2014] [Indexed: 01/11/2023] Open
Abstract
The possibility of measuring binding of small-molecule drugs to desired targets in live cells could provide a better understanding of drug action. However, current approaches mostly yield static data, require lysis or rely on indirect assays and thus often provide an incomplete understanding of drug action. Here, we present a multiphoton fluorescence anisotropy microscopy live cell imaging technique to measure and map drug-target interaction in real time at subcellular resolution. This approach is generally applicable using any fluorescently labelled drug and enables high-resolution spatial and temporal mapping of bound and unbound drug distribution. To illustrate our approach we measure intracellular target engagement of the chemotherapeutic Olaparib, a poly(ADP-ribose) polymerase inhibitor, in live cells and within a tumour in vivo. These results are the first generalizable approach to directly measure drug-target binding in vivo and present a promising tool to enhance understanding of drug activity.
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Affiliation(s)
- J.M. Dubach
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Richard B. Simches Research Center, 185 Cambridge Street, Boston 02114, USA
| | - C. Vinegoni
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Richard B. Simches Research Center, 185 Cambridge Street, Boston 02114, USA
| | - R. Mazitschek
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Richard B. Simches Research Center, 185 Cambridge Street, Boston 02114, USA
| | - P. Fumene Feruglio
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Richard B. Simches Research Center, 185 Cambridge Street, Boston 02114, USA
| | | | - R. Weissleder
- Center for System Biology, Massachusetts General Hospital and Harvard Medical School, Richard B. Simches Research Center, 185 Cambridge Street, Boston 02114, USA
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952
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Chen H, Chen Y, Yang H, Xu W, Zhang M, Ma Y, Achilefu S, Gu Y. A dual-targeting nanocarrier based on modified chitosan micelles for tumor imaging and therapy. Polym Chem 2014. [DOI: 10.1039/c4py00495g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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953
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Maawy AA, Hiroshima Y, Zhang Y, Luiken GA, Hoffman RM, Bouvet M. Polyethylene glycol (PEG) linked to near infrared (NIR) dyes conjugated to chimeric anti-carcinoembryonic antigen (CEA) antibody enhances imaging of liver metastases in a nude-mouse model of human colon cancer. PLoS One 2014; 9:e97965. [PMID: 24859320 PMCID: PMC4032229 DOI: 10.1371/journal.pone.0097965] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 04/26/2014] [Indexed: 11/18/2022] Open
Abstract
We report here that polyethylene glycol (PEG) linked to near infrared dyes conjugated to chimeric mouse-human anti-carcinoembryonic antigen (CEA) antibody greatly improves imaging of liver metastases in a nude mouse model of colon-cancer experimental metastases. PEGylated and non-PEGylated DyLight 650 and 750 dyes were conjugated to the chimeric anti-CEA antibody. The dyes were initially injected intravenously into nude mice without tumors. Tissue biodistribution was determined by tissue sonication and analyzing tissue dye concentration profiles over time. PEGylated dyes had significantly lower accumulation in the liver (p = 0.03 for the 650 dyes; p = 0.002 for the 750 dyes) compared to non-PEGylated dyes. In an experimental liver metastasis model of HT-29 colon cancer, PEGylated dyes conjugated to the anti-CEA antibody showed good labeling of metastatic tumors with high contrast between normal and malignant tissue which was not possible with the non-PEGylated dyes since there was so much non-specific accumulation in the liver. PEGylation of the DyLight 650 and 750 NIR dyes significantly altered tissue biodistribution, allowing brighter tissue labeling, decreased accumulation in normal organs, particularly the liver. This enabled high fidelity and high contrast imaging of liver metastases.
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Affiliation(s)
- Ali A. Maawy
- Department of Surgery, University of California San Diego, San Diego, California, United States of America
| | - Yukihiko Hiroshima
- AntiCancer, Inc., San Diego, California, United States of America
- Yokohama City University, Yokohama City, Japan
| | - Yong Zhang
- AntiCancer, Inc., San Diego, California, United States of America
| | - George A. Luiken
- OncoFluor, Inc., San Diego, California, United States of America
| | - Robert M. Hoffman
- Department of Surgery, University of California San Diego, San Diego, California, United States of America
- AntiCancer, Inc., San Diego, California, United States of America
| | - Michael Bouvet
- Department of Surgery, University of California San Diego, San Diego, California, United States of America
- VA San Diego Healthcare System, San Diego, California, United States of America
- * E-mail:
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954
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Lütje S, Rijpkema M, Helfrich W, Oyen WJG, Boerman OC. Targeted Radionuclide and Fluorescence Dual-modality Imaging of Cancer: Preclinical Advances and Clinical Translation. Mol Imaging Biol 2014; 16:747-55. [DOI: 10.1007/s11307-014-0747-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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955
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Quirk BC, McLaughlin RA, Pagnozzi AM, Kennedy BF, Noble PB, Sampson DD. Optofluidic needle probe integrating targeted delivery of fluid with optical coherence tomography imaging. OPTICS LETTERS 2014; 39:2888-91. [PMID: 24978229 DOI: 10.1364/ol.39.002888] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We present an optofluidic optical coherence tomography (OCT) needle probe capable of modifying the local optical properties of tissue to improve needle-probe imaging performance. The side-viewing probe comprises an all-fiber-optic design encased in a hypodermic needle (outer diameter 720 μm) and integrates a coaxial fluid-filled channel, terminated by an outlet adjacent to the imaging window, allowing focal injection of fluid to a target tissue. This is the first fully integrated OCT needle probe design to incorporate fluid injection into the imaging mechanism. The utility of this probe is demonstrated in air-filled sheep lungs, where injection of small quantities of saline is shown, by local refractive index matching, to greatly improve image penetration through multiple layers of alveoli. 3D OCT images are correlated against histology, showing improvement in the capability to image lung structures such as bronchioles and blood vessels.
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956
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Kelemen LE, Brenton JD, Parkinson C, C. Whitaker H, Piskorz AM, Csizmadi I, Robson PJ. Conditions associated with circulating tumor-associated folate receptor 1 protein in healthy men and women. PLoS One 2014; 9:e96542. [PMID: 24810481 PMCID: PMC4014514 DOI: 10.1371/journal.pone.0096542] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 04/08/2014] [Indexed: 12/01/2022] Open
Abstract
Background Serum concentrations of the tumor-associated folate receptor 1 (FOLR1) protein may be a marker for early cancer detection, yet concentrations have also been detected in cancer-free women. We investigated the conditions associated with circulating FOLR1 protein in healthy individuals and sought to clarify the range of normal serum values. Methods Sera of cancer-free men and women (N = 60) enrolled in a population-based cohort study in Alberta, Canada were analyzed for FOLR1 protein using an electrochemical luminescence immunoassay. Dietary, lifestyle, medical and reproductive history information was collected by questionnaires. Differences in serum FOLR1 concentrations between groups were assessed by non-parametric tests, and predictors of serum FOLR1 concentrations were estimated using multivariable linear regression. Results Median serum FOLR1 concentration was higher in women (491 pg/ml, range = 327–693 pg/ml) than in men (404 pg/ml, range = 340–682 pg/ml), P = 0.001. FOLR1 concentration was also positively associated with vitamin A intake (P = 0.02), and showed positive trends with age and with oral contraceptive hormone use among women and an inverse trend with body mass index. All variables examined explained almost half of the variation in serum FOLR1 (model R2 = 0.44, P = 0.04); however, the retention of gender (P = 0.003) and vitamin A intake (P = 0.03) together explained 20% (P = 0.001) of serum FOLR1 variation. No other predictor was significant at P<0.05. Conclusions The positive association between serum FOLR1 concentration and female gender independent of an age effect suggests caution against statements to exploit serum FOLR1 for early cancer detection without further understanding the biological underpinnings of these observations. Serum FOLR1 concentrations may be influenced by the steroid retinoic acid (vitamin A) but do not appear to be associated with folate nutritional status. These findings require confirmation in larger independent studies.
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Affiliation(s)
- Linda E. Kelemen
- Department of Population Health Research, Alberta Health Services, Calgary, Alberta, Canada
- Department of Medical Genetics, University of Calgary, Calgary, Alberta, Canada
- * E-mail:
| | - James D. Brenton
- Cancer Research United Kingdom Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
- Department of Oncology, University of Cambridge, Hutchison/Medical Research Council Research Centre, Cambridge, United Kingdom
- National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge, United Kingdom
- Cambridge Experimental Cancer Medicine Centre, Cambridge, United Kingdom
| | - Christine Parkinson
- Cancer Research United Kingdom Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
| | - Hayley C. Whitaker
- Cancer Research United Kingdom Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
- Department of Oncology, University of Cambridge, Hutchison/Medical Research Council Research Centre, Cambridge, United Kingdom
| | - Anna M. Piskorz
- Cancer Research United Kingdom Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Cambridge, United Kingdom
| | - Ilona Csizmadi
- Department of Population Health Research, Alberta Health Services, Calgary, Alberta, Canada
- Departments of Oncology and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Paula J. Robson
- Alberta Health Services, Edmonton, Alberta, Canada
- Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, Alberta, Canada
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957
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Abstract
White light endoscopy has proven to be a very powerful tool in oncology. There is still, however, a need for better endoscopic techniques to overcome the current limitations of white light optics. New technologies that allow higher sensitivity, improved microanatomy and molecular characterization have been available for in vitro microscopy and are now being translated into in vivo endoscopy. Endoscopic molecular imaging is still in its infancy but holds the promise for enhancing sensitivity for early lesions, thus allowing earlier diagnosis and enabling early image-guided endoscopic intervention. A key feature of endoscopic molecular imaging is its increased sensitivity and specificity, which will be illustrated in this article, as well as describing perspectives on its future use in oncologic surgery.
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Affiliation(s)
- Towhid Ali
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892-1088, USA
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958
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Rüger R, Tansi FL, Rabenhold M, Steiniger F, Kontermann RE, Fahr A, Hilger I. In vivo near-infrared fluorescence imaging of FAP-expressing tumors with activatable FAP-targeted, single-chain Fv-immunoliposomes. J Control Release 2014; 186:1-10. [PMID: 24810115 DOI: 10.1016/j.jconrel.2014.04.050] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 04/17/2014] [Accepted: 04/24/2014] [Indexed: 12/01/2022]
Abstract
Molecular and cellular changes that precede the invasive growth of solid tumors include the release of proteolytic enzymes and peptides in the tumor stroma, the recruitment of phagocytic and lymphoid infiltrates and alteration of the extracellular matrix. The reactive tumor stroma consists of a large number of myofibroblasts, characterized by high expression of fibroblast activation protein alpha (FAP). FAP, a type-II transmembrane sialoglycoprotein is an attractive target in diagnosis and therapy of several pathologic disorders especially cancer. In the underlying work, a fluorescence-activatable liposome (fluorescence-quenched during circulation and fluorescence activation upon cellular uptake), bearing specific single-chain Fv fragments directed against FAP (scFv'FAP) was developed, and its potential for use in fluorescence diagnostic imaging of FAP-expressing tumor cells was evaluated by whole body fluorescence imaging. The liposomes termed anti-FAP-IL were prepared via post-insertion of ligand-phospholipid-conjugates into preformed DY-676-COOH-containing liposomes. The anti-FAP-IL revealed a homogeneous size distribution and showed specific interaction and binding with FAP-expressing cells in vitro. The high level of fluorescence quenching of the near-infrared fluorescent dye sequestered in the aqueous interior of the liposomes enables fluorescence imaging exclusively upon uptake and degradation by cells, which results in fluorescence activation. Only FAP-expressing cells were able to take up and activate fluorescence of anti-FAP-IL in vitro. Furthermore, anti-FAP-IL accumulated selectively in FAP-expressing xenograft models in vivo, as demonstrated by blocking experiments using free scFv'FAP. The local tumor fluorescence intensities were in agreement with the intrinsic degree of FAP-expression in different xenograft models. Thus, anti-FAP-IL can serve as a suitable in vivo diagnostic tool for pathological disorders accompanied by high FAP-expression.
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Affiliation(s)
- Ronny Rüger
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena, Lessingstrasse 8, 07743 Jena, Germany.
| | - Felista L Tansi
- Dept. of Experimental Radiology, Institute of Diagnostic and Interventional Radiology I, Jena University Hospital-Friedrich Schiller University Jena, Erlanger Allee 101, 07747 Jena, Germany.
| | - Markus Rabenhold
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena, Lessingstrasse 8, 07743 Jena, Germany
| | - Frank Steiniger
- Center for Electron Microscopy, Jena University Hospital-Friedrich Schiller University Jena, Ziegelmuehlenweg 1, 07743 Jena, Germany
| | - Roland E Kontermann
- Institute of Cell Biology and Immunology, University Stuttgart, Allmandring 31, 70569 Stuttgart, Germany
| | - Alfred Fahr
- Department of Pharmaceutical Technology, Friedrich-Schiller-University Jena, Lessingstrasse 8, 07743 Jena, Germany.
| | - Ingrid Hilger
- Dept. of Experimental Radiology, Institute of Diagnostic and Interventional Radiology I, Jena University Hospital-Friedrich Schiller University Jena, Erlanger Allee 101, 07747 Jena, Germany.
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959
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van Oosten M, Schäfer T, Gazendam JAC, Ohlsen K, Tsompanidou E, de Goffau MC, Harmsen HJM, Crane LMA, Lim E, Francis KP, Cheung L, Olive M, Ntziachristos V, van Dijl JM, van Dam GM. Real-time in vivo imaging of invasive- and biomaterial-associated bacterial infections using fluorescently labelled vancomycin. Nat Commun 2014; 4:2584. [PMID: 24129412 DOI: 10.1038/ncomms3584] [Citation(s) in RCA: 203] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 09/10/2013] [Indexed: 01/29/2023] Open
Abstract
Invasive and biomaterial-associated infections in humans are often difficult to diagnose and treat. Here, guided by recent advances in clinically relevant optical imaging technologies, we explore the use of fluorescently labelled vancomycin (vanco-800CW) to specifically target and detect infections caused by Gram-positive bacteria. The application potential of vanco-800CW for real-time in vivo imaging of bacterial infections is assessed in a mouse myositis model and a human post-mortem implant model. We show that vanco-800CW can specifically detect Gram-positive bacterial infections in our mouse myositis model, discriminate bacterial infections from sterile inflammation in vivo and detect biomaterial-associated infections in the lower leg of a human cadaver. We conclude that vanco-800CW has a high potential for enhanced non-invasive diagnosis of infections with Gram-positive bacteria and is a promising candidate for early-phase clinical trials.
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Affiliation(s)
- Marleen van Oosten
- 1] Department of Medical Microbiology, University of Groningen, University Medical Center Groningen (UMCG), Hanzeplein 1, PO Box 30001, 9700 RB Groningen, The Netherlands [2] Division of Surgical Oncology, Department of Surgery, BioOptical Imaging Center, University of Groningen, UMCG, Hanzeplein 1, PO Box 30001, 9700 RB Groningen, The Netherlands
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960
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Wu X, Tian Y, Yu M, Lin B, Han J, Han S. A fluorescently labelled sialic acid for high performance intraoperative tumor detection. Biomater Sci 2014; 2:1120-1127. [PMID: 32482007 DOI: 10.1039/c4bm00028e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surgical resection is widely used for tumor treatment, necessitating approaches for the precise locating of elusive tumor foci. We report the high performance detection of tumors in mice with fluorescein-isothiocyanate (FITC) labelled sialic acid (FITC-SA), a fluorescent monosaccharide with low cytoxicity. Analysis of mice intravenously injected with FITC-SA revealed high target-to-background fluorescence ratios in subcutaneous tumors and liver tumor implants with 0.2-5 mm diameters, which are significantly below the clinical threshold of minimal residual cancer (∼1 cm clearance). Extracellular FITC-SA is quickly cleared from circulation whereas the intracellular FITC-SA could be metabolically incorporated into glycoproteins via a cellular sialylation pathway. Compared with FITC-SA-laden nanoparticles, free FITC-SA is preferentially and quickly taken up by tumors in mice and displays high tumor-to-background signal contrast, suggesting the potential for fluorescence directed surgical ablation of tumors.
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Affiliation(s)
- Xuanjun Wu
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Biology, Xiamen University, Xiamen, 361005, China.
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961
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Xi L, Zhou G, Gao N, Yang L, Gonzalo DA, Hughes SJ, Jiang H. Photoacoustic and fluorescence image-guided surgery using a multifunctional targeted nanoprobe. Ann Surg Oncol 2014; 21:1602-9. [PMID: 24554061 PMCID: PMC4908963 DOI: 10.1245/s10434-014-3541-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Indexed: 11/18/2022]
Abstract
PURPOSE A complete surgical excision with negative tumor margins is the single most important factor in the prediction of long-term survival for most cancer patients with solid tumors. We hypothesized that image-guided surgery using nanoparticle-enhanced photoacoustic and fluorescence imaging could significantly reduce the rate of local recurrence. METHODS A murine model of invasive mammary carcinoma was utilized. Three experimental groups were included: (1) control; (2) tumor-bearing mice injected with non-targeted nanoprobe; and (3) tumor-bearing mice injected with targeted nanoprobe. The surgeon removed the primary tumor following the guidance of photoacoustic imaging (PAI), then inspected the surgical wound and removed the suspicious tissue using intraoperative near-infrared (NIR) fluorescence imaging. The mice were followed with bioluminescence imaging weekly to quantify local recurrence. RESULTS Nanoprobe-enhanced photoacoustic contrast enabled PAI to map the volumetric tumor margins up to a depth of 31 mm. The targeted nanoparticles provided significantly greater enhancement than non-targeted nanoparticles. Seven mice in the group injected with the targeted nanoprobes underwent additional resections based upon NIR fluorescence imaging. Pathological analysis confirmed residual cancer cells in the re-resected specimens in 5/7 mice. Image-guided resection resulted in a significant reduction in local recurrence; 8.7 and 33.3 % of the mice in the targeted and control groups suffered recurrence, respectively. CONCLUSIONS These results suggest that photoacoustic and NIR intraoperative imaging can effectively assist a surgeon to locate primary tumors and to identify residual disease in real-time. This technology has promise to overcome current clinical challenges that result in the need for second surgical procedures.
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Affiliation(s)
- Lei Xi
- Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Guangyin Zhou
- Department of Surgery, University of Florida, Gainesville, FL
| | - Ning Gao
- Department of Surgery, Emory University School of Medicine, Atlanta, GA
| | - Lily Yang
- Department of Surgery, Emory University School of Medicine, Atlanta, GA
| | | | | | - Huabei Jiang
- Department of Biomedical Engineering, University of Florida, Gainesville, FL
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962
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Wu PJ, Kuo SY, Huang YC, Chen CP, Chan YH. Polydiacetylene-enclosed near-infrared fluorescent semiconducting polymer dots for bioimaging and sensing. Anal Chem 2014; 86:4831-9. [PMID: 24749695 DOI: 10.1021/ac404237q] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Semiconducting polymer dots (P-dots) recently have emerged as a new type of ultrabright fluorescent probe with promising applications in biological imaging and detection. With the increasing desire for near-infrared (NIR) fluorescing probes for in vivo biological measurements, the currently available NIR-emitting P-dots are very limited and the leaching of the encapsulated dyes/polymers has usually been a concern. To address this challenge, we first embedded the NIR dyes into the matrix of poly[(9,9-dioctylfluorene)-co-2,1,3-benzothiadiazole-co-4,7-di(thiophen-2-yl)-2,1,3-benzothiadiazole] (PF-BT-DBT) polymer and then enclosed the doped P-dots with polydiacetylenes (PDAs) to avoid potential leakage of the entrapped NIR dyes from the P-dot matrix. These PDA-enclosed NIR-emitting P-dots not only emitted much stronger NIR fluorescence than conventional organic molecules but also exhibited enhanced photostability over CdTe quantum dots, free NIR dyes, and gold nanoclusters. We next conjugated biomolecules onto the surface of the resulting P-dots and demonstrated their capability for specific cellular labeling without any noticeable nonspecific binding. To employ this new class of material as a facile sensing platform, an easy-to-prepare test paper, obtained by soaking the paper into the PDA-enclosed NIR-emitting P-dot solution, was used to sense external stimuli such as ions, temperature, or pH, depending on the surface functionalization of PDAs. We believe these PDA-coated NIR-fluorescing P-dots will be very useful in a variety of bioimaging and analytical applications.
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Affiliation(s)
- Pei-Jing Wu
- Department of Chemistry, National Sun Yat-sen University , 70 Lien Hai Road, Kaohsiung, Taiwan 80424
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963
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Muselaers CH, Stillebroer AB, Rijpkema M, Franssen GM, Oosterwijk E, Mulders PF, Oyen WJ, Boerman OC. Optical Imaging of Renal Cell Carcinoma with Anti–Carbonic Anhydrase IX Monoclonal Antibody Girentuximab. J Nucl Med 2014; 55:1035-40. [DOI: 10.2967/jnumed.114.137356] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 02/06/2014] [Indexed: 12/21/2022] Open
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964
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Bimodal imaging probes for combined PET and OI: recent developments and future directions for hybrid agent development. BIOMED RESEARCH INTERNATIONAL 2014; 2014:153741. [PMID: 24822177 PMCID: PMC4009187 DOI: 10.1155/2014/153741] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/18/2014] [Indexed: 12/02/2022]
Abstract
Molecular imaging—and especially positron emission tomography (PET)—has gained increasing importance for diagnosis of various diseases and thus experiences an increasing dissemination. Therefore, there is also a growing demand for highly affine PET tracers specifically accumulating and visualizing target structures in the human body. Beyond the development of agents suitable for PET alone, recent tendencies aim at the synthesis of bimodal imaging probes applicable in PET as well as optical imaging (OI), as this combination of modalities can provide clinical advantages. PET, due to the high tissue penetration of the γ-radiation emitted by PET nuclides, allows a quantitative imaging able to identify and visualize tumors and metastases in the whole body. OI on the contrary visualizes photons exhibiting only a limited tissue penetration but enables the identification of tumor margins and infected lymph nodes during surgery without bearing a radiation burden for the surgeon. Thus, there is an emerging interest in bimodal agents for PET and OI in order to exploit the potential of both imaging techniques for the imaging and treatment of tumor diseases. This short review summarizes the available hybrid probes developed for dual PET and OI and discusses future directions for hybrid agent development.
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965
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Maurer AH, Elsinga P, Fanti S, Nguyen B, Oyen WJG, Weber WA. Imaging the folate receptor on cancer cells with 99mTc-etarfolatide: properties, clinical use, and future potential of folate receptor imaging. J Nucl Med 2014; 55:701-4. [PMID: 24732155 DOI: 10.2967/jnumed.113.133074] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Folate receptor (FR) can be used as a therapeutic target because of its expression on different epithelial cancers, such as ovarian, non-small cell lung, endometrial, and breast cancer. Assessing FR expression in tumors may help to identify patients who can benefit from FR-targeted therapeutics, such as vintafolide and farletuzumab. Different methods exist to detect FR expression. Tissue sampling has limited clinical utility, mainly because it requires an invasive procedure. (99m)Tc-etarfolatide, a (99m)Tc-labeled folate conjugate, is in late-phase trials in Europe and the United States. It allows noninvasive, whole-body imaging of the FR. This review focuses on this FR-imaging agent and how it may be used to direct FR-targeted therapy.
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Affiliation(s)
- Alan H Maurer
- Department of Radiology, Temple University Hospital and School of Medicine, Philadelphia, Pennsylvania
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966
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Watanabe R, Sato K, Hanaoka H, Harada T, Nakajima T, Kim I, Paik CH, Wu AM, Choyke PL, Kobayashi H. Minibody-indocyanine green based activatable optical imaging probes: the role of short polyethylene glycol linkers. ACS Med Chem Lett 2014; 5:411-5. [PMID: 24900850 DOI: 10.1021/ml400533y] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 01/17/2014] [Indexed: 12/27/2022] Open
Abstract
Minibodies show rapider blood clearance than IgGs due to smaller size that improves target-to-background ratio (TBR) in in vivo imaging. Additionally, the ability to activate an optical probe after binding to the target greatly improves the TBR. An optical imaging probe based on a minibody against prostate-specific membrane antigen (PSMA-MB) and conjugated with an activatable fluorophore, indocyanine green (ICG), was designed to fluoresce only after binding to cell-surface PSMA. To further reduce background signal, short polyethylene glycol (PEG) linkers were employed to improve the covalent bonding ratio of ICG. New PSMA-MBs conjugated with bifunctional ICG derivatives specifically visualized PSMA-positive tumor xenografts in mice bearing both PSMA-positive and -negative tumors within 6 h postinjection. The addition of short PEG linkers significantly improved TBRs; however, it did not significantly alter the biodistribution. Thus, minibody-ICG conjugates could be a good alternative to IgG-ICG in the optical cancer imaging for further clinical applications.
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Affiliation(s)
- Rira Watanabe
- Molecular Imaging
Program, Center for Cancer
Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Kazuhide Sato
- Molecular Imaging
Program, Center for Cancer
Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Hirofumi Hanaoka
- Molecular Imaging
Program, Center for Cancer
Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Toshiko Harada
- Molecular Imaging
Program, Center for Cancer
Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Takahito Nakajima
- Molecular Imaging
Program, Center for Cancer
Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Insook Kim
- Applied/Developmental
Research Directorate, Leidos Biomedical Research, Inc., Frederick National Laboratory, Frederick, Maryland 21702, United States
| | - Chang H. Paik
- Nuclear
Medicine Department, Radiology and Imaging Science, Warren Grant Magnuson
Clinical Center, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Anna M. Wu
- Department
of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, United States
| | - Peter L. Choyke
- Molecular Imaging
Program, Center for Cancer
Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Hisataka Kobayashi
- Molecular Imaging
Program, Center for Cancer
Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
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967
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Mateu BP, Kainz B, Pum D, Sleytr UB, Toca-Herrera JL. Fluorescent sensors based on bacterial fusion proteins. Methods Appl Fluoresc 2014; 2:024002. [PMID: 29148466 DOI: 10.1088/2050-6120/2/2/024002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Fluorescence proteins are widely used as markers for biomedical and technological purposes. Therefore, the aim of this project was to create a fluorescent sensor, based in the green and cyan fluorescent protein, using bacterial S-layers proteins as scaffold for the fluorescent tag. We report the cloning, expression and purification of three S-layer fluorescent proteins: SgsE-EGFP, SgsE-ECFP and SgsE-13aa-ECFP, this last containing a 13-amino acid rigid linker. The pH dependence of the fluorescence intensity of the S-layer fusion proteins, monitored by fluorescence spectroscopy, showed that the ECFP tag was more stable than EGFP. Furthermore, the fluorescent fusion proteins were reassembled on silica particles modified with cationic and anionic polyelectrolytes. Zeta potential measurements confirmed the particle coatings and indicated their colloidal stability. Flow cytometry and fluorescence microscopy showed that the fluorescence of the fusion proteins was pH dependent and sensitive to the underlying polyelectrolyte coating. This might suggest that the fluorescent tag is not completely exposed to the bulk media as an independent moiety. Finally, it was found out that viscosity enhanced the fluorescence intensity of the three fluorescent S-layer proteins.
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Affiliation(s)
- Batirtze Prats Mateu
- Institute for Biophysics, Department of Nanobiotechnology, University of Natural Resources and Life Science Vienna (BOKU), Muthgasse 11, A-1190 Vienna, Austria
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968
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Pharmacokinetic and Biodistribution Assessment of a Near Infrared-Labeled PSMA-Specific Small Molecule in Tumor-Bearing Mice. Prostate Cancer 2014; 2014:104248. [PMID: 24804103 PMCID: PMC3997074 DOI: 10.1155/2014/104248] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 02/17/2014] [Accepted: 03/07/2014] [Indexed: 02/05/2023] Open
Abstract
Prostate cancer is the most frequently diagnosed cancer in men and often requires surgery. Use of near infrared (NIR) technologies to perform image-guided surgery may improve accurate delineation of tumor margins. To facilitate preclinical testing of such outcomes, here we developed and characterized a PSMA-targeted small molecule, YC-27. IRDye 800CW was conjugated to YC-27 or an anti-PSMA antibody used for reference. Human 22Rv1, PC3M-LN4, and/or LNCaP prostate tumor cells were exposed to the labeled compounds. In vivo targeting and clearance properties were determined in tumor-bearing mice. Organs and tumors were excised and imaged to assess probe localization. YC-27 exhibited a dose dependent increase in signal upon binding. Binding specificity and internalization were visualized by microscopy. In vitro and in vivo blocking studies confirmed YC-27 specificity. In vivo, YC-27 showed good tumor delineation and tissue contrast at doses as low as 0.25 nmole. YC-27 was cleared via the kidneys but bound the proximal tubules of the renal cortex and epididymis. Since PSMA is also broadly expressed on the neovasculature of most tumors, we expect YC-27 will have clinical utility for image-guided surgery and tumor resections.
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969
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Lütje S, Rijpkema M, Franssen GM, Fracasso G, Helfrich W, Eek A, Oyen WJ, Colombatti M, Boerman OC. Dual-Modality Image-Guided Surgery of Prostate Cancer with a Radiolabeled Fluorescent Anti-PSMA Monoclonal Antibody. J Nucl Med 2014; 55:995-1001. [PMID: 24700882 DOI: 10.2967/jnumed.114.138180] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 02/19/2014] [Indexed: 02/04/2023] Open
Abstract
UNLABELLED Both radionuclide imaging and near-infrared fluorescent (NIRF) imaging have a high sensitivity to detect tumors in vivo. The combination of these modalities using dual-labeled antibodies may allow both preoperative and intraoperative tumor localization and may be used in image-guided surgery to ensure complete resection of tumor tissue. Here, we evaluated the potential of dual-modality imaging of prostate cancer with the monoclonal antibody D2B, directed against an extracellular domain of prostate-specific membrane antigen (PSMA). For these studies, D2B was labeled both with (111)In and with the NIRF dye IRDye800CW. METHODS D2B was conjugated with N-hydroxysuccinimide-IRDye800CW and p-isothiocyanatobenzyl-diethylenetriaminepentaacetic acid (ITC-DTPA) and subsequently radiolabeled with (111)In. For biodistribution and NIRF imaging, (111)In-DTPA-D2B-IRDye800CW (2 μg, 0.55 MBq/mouse) was injected intravenously into BALB/c nude mice with subcutaneous PSMA-expressing LNCaP tumors (right flank) and PSMA-negative PC3 tumors (left flank). The biodistribution was determined at 1, 2, 3, and 7 d after injection. In addition, micro-SPECT/CT and NIRF imaging with (111)In-DTPA-D2B-IRDye800CW (3 μg, 8.5 MBq/mouse) was performed on mice with intraperitoneally growing LS174T-PSMA tumors. RESULTS (111)In-DTPA-D2B-IRDye800CW specifically accumulated in subcutaneous PSMA-positive LNCaP tumors (45.8 ± 8.0 percentage injected dose per gram at 168 h after injection), whereas uptake in subcutaneous PSMA-negative PC3 tumors was significantly lower (6.6 ± 1.3 percentage injected dose per gram at 168 h after injection). Intraperitoneal LS174T-PSMA tumors could be visualized specifically with both micro-SPECT/CT and NIRF imaging at 2 d after injection, and the feasibility of image-guided resection of intraperitoneal tumors was demonstrated in this model. CONCLUSION Dual-labeled (111)In-DTPA-D2B-IRDye800CW enables specific and sensitive detection of prostate cancer lesions in vivo with micro-SPECT/CT and NIRF imaging. In addition to preoperative micro-SPECT/CT imaging to detect tumors, NIRF imaging enables image-guided surgical resection. These preclinical findings warrant clinical studies with (111)In-DTPA-D2B-IRDye800CW to improve tumor detection and resection in prostate cancer patients.
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Affiliation(s)
- Susanne Lütje
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mark Rijpkema
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Gerben M Franssen
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Giulio Fracasso
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy; and
| | - Wijnand Helfrich
- Department of Surgery, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Annemarie Eek
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Wim J Oyen
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marco Colombatti
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy; and
| | - Otto C Boerman
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
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970
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RIPL peptide (IPLVVPLRRRRRRRRC)-conjugated liposomes for enhanced intracellular drug delivery to hepsin-expressing cancer cells. Eur J Pharm Biopharm 2014; 87:489-99. [PMID: 24704199 DOI: 10.1016/j.ejpb.2014.03.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 03/03/2014] [Accepted: 03/11/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND To facilitate selective drug delivery to hepsin (Hpn)-expressing cancer cells, the RIPL peptide (IPLVVPLRRRRRRRRC; 16mer; 2.1 kDa) was synthesized as a novel cell penetrating/homing peptide (CPHP) and conjugated to a liposomal carrier. METHODS RIPL peptide-conjugated liposomes (RIPL-Lipo) were prepared by conjugating RIPL peptides to maleimide-derivatized liposomal vesicles via the thiol-maleimide reaction. Vesicle size and zeta potential were examined using a Zetasizer. Intracellular uptake specificity of the RIPL peptide, or RIPL-Lipo, was assessed by measuring mean fluorescence intensity (MFI) after treatment with a fluorescent marker in various cell lines: SK-OV-3, MCF-7, and LNCaP for Hpn(+); DU145, PC3, and HaCaT for Hpn(-). FITC-dextran was used as a model compound. Selective translocational behavior of RIPL-Lipo to LNCaP cells was visualized by fluorescence microscopy and confocal laser scanning microscopy. Cytotoxicities of the RIPL peptide and RIPL-Lipo were evaluated by WST-1 assay. RESULTS RIPL peptides exhibited significant Hpn-selectivity. RIPL-Lipo systems were of positively charged nanodispersion (165 nm in average; 6-24 mV depending on RIPL conjugation ratio). RIPL-Lipo with the conjugation of 2300 peptide molecules revealed the greatest MFI in all cell lines tested. Cellular uptake of RIPL-Lipo increased by 20- to 70-fold in Hpn(+) cells, and 5- to 7-fold in Hpn(-) cells, compared to the uptake of FITC-dextran. Cytosolic internalization of RIPL-Lipo was time-dependent: bound instantly; internalized within 30 min; distributed throughout the cytoplasm after 1 h. Cytotoxicities of RIPL peptide (up to 50 μM) and RIPL-Lipo (up to 10%) were minor (cell viability >90%) in LNCaP and HaCaT cells. CONCLUSION By employing a novel CPHP, the RIPL-Lipo system was successfully developed for Hpn-specific drug delivery.
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971
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Snoeks TJA, van Driel PBAA, Keereweer S, Aime S, Brindle KM, van Dam GM, Löwik CWGM, Ntziachristos V, Vahrmeijer AL. Towards a successful clinical implementation of fluorescence-guided surgery. Mol Imaging Biol 2014; 16:147-51. [PMID: 24249642 DOI: 10.1007/s11307-013-0707-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
During the European Molecular Imaging Meeting (EMIM) 2013, the fluorescence-guided surgery study group held its inaugural session to discuss the clinical implementation of fluorescence-guided surgery. The general aim of this study group is to discuss and identify the steps required to successfully and safely bring intraoperative fluorescence imaging to the clinics. The focus group intends to use synergies between interested groups as a tool to address regulatory and implementation hurdles in Europe and operates within the intraoperative focus group of the World Molecular Imaging Society (WMIS) that promotes the same interests at the WMIS level. The major topics on the critical path of implementation identified within the study group were quality controls and standards for ensuring accurate imaging and the ability to compare results from different studies, regulatory affairs, and strategies to increase awareness among physicians, regulators, insurance companies, and a broader audience. These hurdles, and the possible actions discussed to overcome them, are summarized in this report. Furthermore, a number of recommendations for the future shape of the fluorescence-guided study group are discussed. A main driving conclusion remains that intraoperative imaging has great clinical potential and that many of the solutions required are best addressed with the community working together to optimally promote and accelerate the clinical implementation of fluorescence imaging towards improving surgical procedures.
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Affiliation(s)
- T J A Snoeks
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333ZA, Leiden, The Netherlands,
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972
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Glatz J, Symvoulidis P, Garcia-Allende PB, Ntziachristos V. Robust overlay schemes for the fusion of fluorescence and color channels in biological imaging. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:040501. [PMID: 24695844 DOI: 10.1117/1.jbo.19.4.040501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 02/27/2014] [Indexed: 05/20/2023]
Abstract
Molecular fluorescence imaging is a commonly used method in various biomedical fields and is undergoing rapid translation toward clinical applications. Color images are commonly superimposed with fluorescence measurements to provide orientation, anatomical information, and molecular tissue properties in a single image. New adaptive methods that produce a more robust composite image than conventional lime green alpha blending are presented and demonstrated herein. Moreover, visualization through temporal changes is showcased as an alternative for real-time imaging systems.
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Affiliation(s)
- Jürgen Glatz
- Technische Universität München, Chair for Biological Imaging, Trogerstr. 9, D-81675 Munich, Germany
| | - Panagiotis Symvoulidis
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstr. 1, D-85764 Neuherberg, Germany
| | - P Beatriz Garcia-Allende
- Technische Universität München, Chair for Biological Imaging, Trogerstr. 9, D-81675 Munich, Germany
| | - Vasilis Ntziachristos
- Technische Universität München, Chair for Biological Imaging, Trogerstr. 9, D-81675 Munich, GermanybInstitute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstr. 1, D-85764 Neuherberg, Germany
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973
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Near-infrared fluorescence cholangiopancreatoscopy: initial clinical feasibility results. Gastrointest Endosc 2014; 79:664-8. [PMID: 24238819 DOI: 10.1016/j.gie.2013.10.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 10/02/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND The recent clinical propagation of targeted fluorescence agents brings a promising alternative in endoscopy by complementing visual disease detection with molecular biomarkers. OBJECTIVE Development of near-infrared (NIR) fluorescence cholangiopancreatoscopy in real-time and validation of its clinical use. DESIGN Feasibility study. SETTING Tertiary referral center at a large university hospital. PATIENTS Patients with pancreatic and biliary diseases. INTERVENTIONS Routine cholangiopancreatoscopy with additional wide-field NIR fluorescence imaging. MAIN OUTCOME MEASUREMENTS We adapted a miniature cholangioscope for real-time concurrent wide-field color and NIR fluorescence imaging. Illumination is provided through a custom-designed fiber bundle, and the acquired images are relayed via a dichroic beam splitter to 2 charge-coupled devices for simultaneous measurement. We characterize the sensitivity and resolution and demonstrate the clinical feasibility by detecting indocyanine green localization in 2 patients. RESULTS A spatial optical resolution of approximately 50 μm was achieved, and fluorescent dye concentrations of 17.3 nM could be detected. Elevated fluorescence signals were detected during clinical measurements, and biopsy specimens confirmed the presence of malignancy in both patients. LIMITATIONS Feasibility study, limited number of patients. CONCLUSIONS The results demonstrate that real-time wide-field fluorescence detection in the NIR range is possible in humans by using adapted endoscopes. The feasibility of detecting indocyanine green in the pancreatobiliary ducts is verified, suggesting that cancer screening at a molecular level might play an increasingly important role in the future.
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974
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Sun JY, Shen J, Thibodeaux J, Huang G, Wang Y, Gao J, Low PS, Dimitrov DS, Sumer BD. In vivo optical imaging of folate receptor-β in head and neck squamous cell carcinoma. Laryngoscope 2014; 124:E312-9. [PMID: 24448885 DOI: 10.1002/lary.24606] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/08/2014] [Accepted: 01/13/2014] [Indexed: 11/06/2022]
Abstract
OBJECTIVES/HYPOTHESIS Folate receptor (FR) expression, although known to be elevated in many types of cancer and inflammatory cells, has not been well characterized in head and neck squamous cell carcinoma (HNSCC). We hypothesized that tumor infiltrating inflammatory cells expressing FR-β could allow fluorescent visualization of HNSCC tumors using folate conjugated dyes even when FR expression in cancer cells is low. STUDY DESIGN Retrospective review of clinical pathologic specimens and in vivo animal study. METHODS A tissue microarray with tumor and tumor-free tissue from 22 patients with HNSCC was stained with antibodies to FR-α and FR-β. We characterized FR-β(+) cells by examining CD45, CD68, CD206, and transforming growth factor (TGF)-β expression. To investigate fluorescent imaging, mice with orthotopic tumor xenografts were imaged in vivo after intravenous injections of folate conjugated fluorescein isothiocyanate (folate-FITC) and were histologically evaluated ex vivo. RESULTS All tumor samples demonstrated significant FR-β staining and negligible FR-α staining. FR-β(+) cells found in tumors coexpressed CD68 and had increased expression of CD206 and TGF-β characteristic of tumor-associated macrophages. In the xenograft models, tumors showed strong in vivo fluorescence after folate-FITC injection in contrast to surrounding normal tissues. Histologic examination of the xenograft tissue similarly showed folate-FITC uptake in areas of inflammatory cellular infiltrate. CONCLUSIONS Although HNSCC tumor cells do not express FR, HNSCC tumors contain a significant population of FR-β-expressing macrophages. Folate conjugated fluorescent dye is able to specifically target and label tumor xenografts to permit macroscopic fluorescence imaging due to FR-β expression on the infiltrating inflammatory cells.
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Affiliation(s)
- Joel Y Sun
- Department of Otolaryngology, University of Texas Southwestern Medical Center, Dallas, Texas
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975
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First in-mouse development and application of a surgically relevant xenograft model of ovarian carcinoma. PLoS One 2014; 9:e89527. [PMID: 24594904 PMCID: PMC3942384 DOI: 10.1371/journal.pone.0089527] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 01/21/2014] [Indexed: 01/26/2023] Open
Abstract
Purpose Preclinical models of epithelial ovarian cancer have not been exploited to evaluate the clinical standard combination therapy of surgical debulking with follow-up chemotherapy. As surgery is critical to patient survival, here we establish a combined surgical/chemotherapy xenograft model of epithelial ovarian cancer and demonstrate its translational relevance. Experimental Design SKOV-3luc+ ovary cancer cells were injected topically into the ovaries of immunodeficient mice. Disease development and effect of clinical standard treatment including hysterectomy, bilateral salpingoophorectomy and removal of metastasis with follow up chemotherapy (carboplatin 12 mg/kg + paclitaxel 15 mg/kg) was evaluated by clinical parameters. Tumor burden was quantified by bioluminescence imaging (BLI). Results The xenograft ovarian tumors developed were poorly differentiated and multicystic and the disease disseminated into the peritoneal cavity. When compared to the controls with a mean survival time of 4.9 weeks, mice treated with surgery and chemotherapy, surgery or chemotherapy demonstrated significantly improved mean survival of 16.1 weeks (p = 0.0008), 12.7 weeks (p = 0.0008), or 10.4 weeks (p = 0.008), respectively. Conclusion Combined surgical intervention and adjuvant chemotherapy was demonstrated for the first time in an orthotopic xenograft model of ovarian cancer. Similar to observation in human studies the combined approach resulted in the longest medial survival time, advocating application of this strategy in future preclinical therapeutic development for this disease.
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976
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Advantages of fluorescence-guided laparoscopic surgery of pancreatic cancer labeled with fluorescent anti-carcinoembryonic antigen antibodies in an orthotopic mouse model. J Am Coll Surg 2014; 219:132-41. [PMID: 24768506 DOI: 10.1016/j.jamcollsurg.2014.02.021] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Revised: 02/24/2014] [Accepted: 02/24/2014] [Indexed: 11/20/2022]
Abstract
BACKGROUND Our laboratory has previously developed fluorescence-guided surgery of pancreatic and other cancers in orthotopic mouse models. Laparoscopic surgery is being used more extensively in surgical oncology. This report describes the efficacy of laparoscopic fluorescence-guided surgery of pancreatic cancer in an orthotopic mouse model. STUDY DESIGN Mouse models of human pancreatic cancer were established with fragments of the BxPC-3 red fluorescent protein-expressing human pancreatic cancer using surgical orthotopic implantation. Mice were randomized to bright-light laparoscopic surgery (BLLS) or to fluorescence-guided laparoscopic surgery (FGLS). Fluorescence-guided laparoscopic surgery was performed with a light-emitting diode light source through a 495-nm emission filter in order to resect the primary tumors and any additional separate submillimeter tumor deposits within the pancreas, the latter of which was not possible with BLLS. Tumors were labeled with anti-CEA AlexaFluor 488 antibodies 24 hours before surgery with intravenous injection. Perioperative fluorescence images were obtained to evaluate tumor size. Mice were followed postoperatively to assess for recurrence and at termination to evaluate tumor burden. RESULTS At termination, the FGLS-treated mice had less pancreatic tumor volume than the BLLS-treated mice (5.75 mm(2) vs 28.43 mm(2), respectively; p = 0.012) and lower tumor weight (21.1 mg vs 174.4 mg, respectively; p = 0.033). Fluorescence-guided laparoscopic surgery compared with BLLS also decreased local recurrence (50% vs 80%, respectively; p = 0.048) and distant recurrence (70% vs 95%, respectively; p = 0.046). More mice in the FGLS group than the BLLS group were free of tumor at termination (25% vs 5%, respectively). Median disease-free survival was lengthened from 2 weeks with BLLS (95% CI, 1.635-2.365) to 7 weeks with FGLS (95% CI, 5.955-8.045; p = 0.001). CONCLUSIONS Fluorescence-guided laparoscopic surgery is more effective than BLLS and, therefore, has important potential for surgical oncology.
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977
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Orsinger GV, Watson JM, Gordon M, Nymeyer AC, de Leon EE, Brownlee JW, Hatch KD, Chambers SK, Barton JK, Kostuk RK, Romanowski M. Simultaneous multiplane imaging of human ovarian cancer by volume holographic imaging. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:36020. [PMID: 24676382 PMCID: PMC3967775 DOI: 10.1117/1.jbo.19.3.036020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 03/03/2014] [Indexed: 05/08/2023]
Abstract
Ovarian cancer is the most deadly gynecologic cancer, a fact which is attributable to poor early detection and survival once the disease has reached advanced stages. Intraoperative laparoscopic volume holographic imaging has the potential to provide simultaneous visualization of surface and subsurface structures in ovarian tissues for improved assessment of developing ovarian cancer. In this ex vivo ovarian tissue study, we assembled a benchtop volume holographic imaging system (VHIS) to characterize the microarchitecture of 78 normal and 40 abnormal tissue specimens derived from ovarian, fallopian tube, uterine, and peritoneal tissues, collected from 26 patients aged 22 to 73 undergoing bilateral salpingo-oophorectomy, hysterectomy with bilateral salpingo-oophorectomy, or abdominal cytoreductive surgery. All tissues were successfully imaged with the VHIS in both reflectance- and fluorescence-modes revealing morphological features which can be used to distinguish between normal, benign abnormalities, and cancerous tissues. We present the development and successful application of VHIS for imaging human ovarian tissue. Comparison of VHIS images with corresponding histopathology allowed for qualitatively distinguishing microstructural features unique to the studied tissue type and disease state. These results motivate the development of a laparoscopic VHIS for evaluating the surface and subsurface morphological alterations in ovarian cancer pathogenesis.
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Affiliation(s)
- Gabriel V. Orsinger
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
| | - Jennifer M. Watson
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
| | - Michael Gordon
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
| | - Ariel C. Nymeyer
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
| | - Erich E. de Leon
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
| | | | - Kenneth D. Hatch
- University of Arizona, College of Medicine, Department of Obstetrics and Gynecology, Tucson, Arizona 85724
| | - Setsuko K. Chambers
- University of Arizona, College of Medicine, Department of Obstetrics and Gynecology, Tucson, Arizona 85724
| | - Jennifer K. Barton
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
- University of Arizona, Electrical and Computer Engineering Department, Tucson, Arizona 85721
- Address all correspondence to: Jennifer K. Barton, E-mail:
| | - Raymond K. Kostuk
- University of Arizona, Department of Optical Sciences, Tucson, Arizona 85721
- University of Arizona, Electrical and Computer Engineering Department, Tucson, Arizona 85721
| | - Marek Romanowski
- University of Arizona, Department of Biomedical Engineering, Tucson, Arizona 85719
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978
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Selective treatment and monitoring of disseminated cancer micrometastases in vivo using dual-function, activatable immunoconjugates. Proc Natl Acad Sci U S A 2014; 111:E933-42. [PMID: 24572574 DOI: 10.1073/pnas.1319493111] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Drug-resistant micrometastases that escape standard therapies often go undetected until the emergence of lethal recurrent disease. Here, we show that it is possible to treat microscopic tumors selectively using an activatable immunoconjugate. The immunoconjugate is composed of self-quenching, near-infrared chromophores loaded onto a cancer cell-targeting antibody. Chromophore phototoxicity and fluorescence are activated by lysosomal proteolysis, and light, after cancer cell internalization, enabling tumor-confined photocytotoxicity and resolution of individual micrometastases. This unique approach not only introduces a therapeutic strategy to help destroy residual drug-resistant cells but also provides a sensitive imaging method to monitor micrometastatic disease in common sites of recurrence. Using fluorescence microendoscopy to monitor immunoconjugate activation and micrometastatic disease, we demonstrate these concepts of "tumor-targeted, activatable photoimmunotherapy" in a mouse model of peritoneal carcinomatosis. By introducing targeted activation to enhance tumor selectively in complex anatomical sites, this study offers prospects for catching early recurrent micrometastases and for treating occult disease.
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979
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Cho H, Cho CS, Indig GL, Lavasanifar A, Vakili MR, Kwon GS. Polymeric micelles for apoptosis-targeted optical imaging of cancer and intraoperative surgical guidance. PLoS One 2014; 9:e89968. [PMID: 24587157 PMCID: PMC3935963 DOI: 10.1371/journal.pone.0089968] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 01/23/2014] [Indexed: 01/07/2023] Open
Abstract
In a two-step strategy, an intraperitoneal (IP) injection of poly(ethylene glycol)-block-poly(ε-caprolactone) (PEG-b-PCL) micelles containing paclitaxel (PTX), cyclopamine (CYP), and gossypol (GSP) at 30, 30, and 30 mg/kg, respectively, debulked tumor tissues by 1.3-fold, based on loss of bioluminescence with <10% body weight change, and induced apoptosis in peritoneal tumors when used as neoadjuvant chemotherapy (NACT) in an ES-2-luc-bearing xenograft model for ovarian cancer. In a second step, a single intravenous (IV) injection of apoptosis-targeting GFNFRLKAGAKIRFGS-PEG-b-PCL micelles containing a near-infrared (NIR) fluorescence probe, DiR (1,1′-dioctadecyltetramethyl indotricarbocyanine iodide), resulted in increased peritoneal DiR accumulation in apoptosis-induced ES-2-luc tumor tissues (ex vivo) by 1.5-fold compared with DiR molecules delivered by methoxy PEG-b-PCL micelles (non-targeted) at 48 h after IV injection in a second step. As a result, a tandem of PEG-b-PCL micelles enabled high-resolution detection of ca. 1 mm diameter tumors, resulting in resection of approximately 90% of tumors, and a low peritoneal cancer index (PCI) of ca. 7. Thus, a tandem of PEG-b-PCL micelles used for NCAT and NIR fluorescence imaging of therapy-induced apoptosis for intraoperative surgical guidance may be a promising treatment strategy for metastatic ovarian cancer.
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Affiliation(s)
- Hyunah Cho
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Clifford S. Cho
- Section of Surgical Oncology, Department of Surgery, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Guilherme L. Indig
- Department of Chemistry and Biochemistry, University of Wisconsin, Milwaukee, Wisconsin, Unites States of America
| | - Afsaneh Lavasanifar
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Mohammad Reza Vakili
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Glen S. Kwon
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, Wisconsin, United States of America
- * E-mail:
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980
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Jin SE, Jin HE, Hong SS. Targeted delivery system of nanobiomaterials in anticancer therapy: from cells to clinics. BIOMED RESEARCH INTERNATIONAL 2014; 2014:814208. [PMID: 24672796 PMCID: PMC3950423 DOI: 10.1155/2014/814208] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 12/25/2013] [Indexed: 12/14/2022]
Abstract
Targeted delivery systems of nanobiomaterials are necessary to be developed for the diagnosis and treatment of cancer. Nanobiomaterials can be engineered to recognize cancer-specific receptors at the cellular levels and to deliver anticancer drugs into the diseased sites. In particular, nanobiomaterial-based nanocarriers, so-called nanoplatforms, are the design of the targeted delivery systems such as liposomes, polymeric nanoparticles/micelles, nanoconjugates, norganic materials, carbon-based nanobiomaterials, and bioinspired phage system, which are based on the nanosize of 1-100 nm in diameter. In this review, the design and the application of these nanoplatforms are discussed at the cellular levels as well as in the clinics. We believe that this review can offer recent advances in the targeted delivery systems of nanobiomaterials regarding in vitro and in vivo applications and the translation of nanobiomaterials to nanomedicine in anticancer therapy.
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Affiliation(s)
- Su-Eon Jin
- Department of Drug Development, College of Medicine, Inha University, 3-ga, Sinheung dong, Jung-gu, Incheon 400-712, Republic of Korea
| | - Hyo-Eon Jin
- Department of Bioengineering, University of California, Berkeley and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Soon-Sun Hong
- Department of Drug Development, College of Medicine, Inha University, 3-ga, Sinheung dong, Jung-gu, Incheon 400-712, Republic of Korea
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981
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Trajkovic-Arsic M, Mohajerani P, Sarantopoulos A, Kalideris E, Steiger K, Esposito I, Ma X, Themelis G, Burton N, Michalski CW, Kleeff J, Stangl S, Beer AJ, Pohle K, Wester HJ, Schmid RM, Braren R, Ntziachristos V, Siveke JT. Multimodal molecular imaging of integrin αvβ3 for in vivo detection of pancreatic cancer. J Nucl Med 2014; 55:446-51. [PMID: 24549287 DOI: 10.2967/jnumed.113.129619] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
UNLABELLED Pancreatic ductal adenocarcinoma (PDAC) is a lethal disease. Late detection of then nonresectable or metastasized tumors emphasizes the need for novel imaging approaches. Here, we report on so far nonexploited potentials of αvβ3 integrin-targeted molecular imaging technologies for detection of PDAC using genetically engineered mouse models. METHODS Immunohistochemistry and Western blot were used for characterization of αvβ3 expression in murine and human PDAC. We applied IntegriSense 680 fluorescence molecular tomography, intraoperative fluorescence imaging, and (68)Ga-NODAGA-RGD PET for αvβ3 integrin molecular in vivo imaging of spontaneous PDAC occurring in Ptf1a(+/Cre);Kras(+/LSL-G12D);p53(LoxP/LoxP) mice. (NODAGA is 1,4,7-triazacyclononane-1,4-bis[acetic acid]-7-[2-glutaric acid] and RGD is arginine-glycine-aspartic acid.) RESULTS αvβ3 integrin is expressed in tumor cells of human and murine PDAC. IntegriSense fluorescence molecular tomography and (68)Ga-NODAGA-RGD PET enabled faithful visualization of PDAC. Furthermore, intraoperative optical imaging with IntegriSense 680 allowed good delineation of tumor borders. CONCLUSION Imaging approaches targeting αvβ3 integrin expand the potential of molecular imaging for identification of αvβ3-positive PDAC with potential implications in early detection, fluorescence-guided surgery, and therapy monitoring.
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Affiliation(s)
- Marija Trajkovic-Arsic
- II. Medizinische Klinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
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982
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Mazuryk O, Maciuszek M, Stochel G, Suzenet F, Brindell M. 2-Nitroimidazole-ruthenium polypyridyl complex as a new conjugate for cancer treatment and visualization. J Inorg Biochem 2014; 134:83-91. [PMID: 24571925 DOI: 10.1016/j.jinorgbio.2014.02.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 02/02/2014] [Accepted: 02/02/2014] [Indexed: 12/29/2022]
Abstract
A novel long-lifetime highly luminescent ruthenium polypyridyl complex containing 2-nitroimidazole moiety [Ru(dip)2(bpy-2-nitroIm)]Cl2 (dip=4,7-diphenyl-1,10-phenanthroline, bpy-2-nitroIm=4-[3-(2-nitro-1H-imidazol-1-yl)propyl]-2,2'-bipyridine) has been designed cancer treatment and imaging. The luminescence properties of the synthesized compound strongly depend on the oxygen concentration. Under oxygen-free conditions quantum yield of luminescence and the average lifetime of emission were found to be 0.034 and 1.9 μs, respectively, which is ca. three times higher in comparison to values obtained in air-equilibrated solution. The binding properties of the investigated ruthenium complex to human serum albumin have been studied and the apparent binding constant for the formation of the protein-ruthenium adduct was determined to be 1.1×10(5)M(-1). The quantum yield and the average lifetime of emission are greatly enhanced upon binding of ruthenium compound to the protein. The DNA binding studies revealed two distinguished binding modes which lead to a decrease in luminescence intensity of ruthenium complex up to 60% for [DNA]/[Ru]<2, and enhancement of emission for [DNA]/[Ru]>80. Preliminary biological studies confirmed fast and efficient accumulation of the ruthenium complex inside cells. Furthermore, the ruthenium complex was found to be relatively cytotoxic with LD50 of 12 and 13 μM for A549 and CT26 cell lines, respectively, under normoxic conditions. The retention and cellular uptake of ruthenium complex is enhanced under hypoxic conditions and its LD50 decreases to 8 μM for A549 cell line.
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Affiliation(s)
- Olga Mazuryk
- Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland
| | - Monika Maciuszek
- Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland; Institut of Organic and Analytical Chemistry, University of Orléans, UMR-CNRS 7311, rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
| | - Grażyna Stochel
- Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland
| | - Franck Suzenet
- Institut of Organic and Analytical Chemistry, University of Orléans, UMR-CNRS 7311, rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France.
| | - Małgorzata Brindell
- Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland.
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983
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Satpathy M, Wang L, Zielinski R, Qian W, Lipowska M, Capala J, Lee GY, Xu H, Wang YA, Mao H, Yang L. Active targeting using HER-2-affibody-conjugated nanoparticles enabled sensitive and specific imaging of orthotopic HER-2 positive ovarian tumors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:544-55. [PMID: 24038985 PMCID: PMC3946402 DOI: 10.1002/smll.201301593] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 07/13/2013] [Indexed: 05/20/2023]
Abstract
Despite advances in cancer diagnosis and treatment, ovarian cancer remains one of the most fatal cancer types. The development of targeted nanoparticle imaging probes and therapeutics offers promising approaches for early detection and effective treatment of ovarian cancer. In this study, HER-2 targeted magnetic iron oxide nanoparticles (IONPs) are developed by conjugating a high affinity and small size HER-2 affibody that is labeled with a unique near infrared dye (NIR-830) to the nanoparticles. Using a clinically relevant orthotopic human ovarian tumor xenograft model, it is shown that HER-2 targeted IONPs are selectively delivered into both primary and disseminated ovarian tumors, enabling non-invasive optical and MR imaging of the tumors as small as 1 mm in the peritoneal cavity. It is determined that HER-2 targeted delivery of the IONPs is essential for specific and sensitive imaging of the HER-2 positive tumor since we are unable to detect the imaging signal in the tumors following systemic delivery of non-targeted IONPs into the mice bearing HER-2 positive SKOV3 tumors. Furthermore, imaging signals and the IONPs are not detected in HER-2 low expressing OVCAR3 tumors after systemic delivery of HER-2 targeted-IONPs. Since HER-2 is expressed in a high percentage of ovarian cancers, the HER-2 targeted dual imaging modality IONPs have potential for the development of novel targeted imaging and therapeutic nanoparticles for ovarian cancer detection, targeted drug delivery, and image-guided therapy and surgery.
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Affiliation(s)
| | - Liya Wang
- Emory University School of Medicine, Atlanta, GA
| | | | - Weiping Qian
- Emory University School of Medicine, Atlanta, GA
| | | | - Jacek Capala
- Radiation Oncology, National Institutes of Health, Bethesda, MD
| | | | - Hong Xu
- Ocean Nanotech, LLC, Springdale, AR
| | | | - Hui Mao
- Emory University School of Medicine, Atlanta, GA
| | - Lily Yang
- Prof. Lily Yang, Department of Surgery, Emory University School of Medicine, Clinic C, Room C-4088, 1365 C Clifton Road, NE, Atlanta, GA 30322. Telephone: 404-778-4269; Fax: 404-778-5530.
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984
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Metildi CA, Kaushal S, Pu M, Messer KA, Luiken GA, Moossa AR, Hoffman RM, Bouvet M. Fluorescence-guided surgery with a fluorophore-conjugated antibody to carcinoembryonic antigen (CEA), that highlights the tumor, improves surgical resection and increases survival in orthotopic mouse models of human pancreatic cancer. Ann Surg Oncol 2014; 21:1405-11. [PMID: 24499827 DOI: 10.1245/s10434-014-3495-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND We have developed a method of distinguishing normal tissue from pancreatic cancer in vivo using fluorophore-conjugated antibody to carcinoembryonic antigen (CEA). The objective of this study was to evaluate whether fluorescence-guided surgery (FGS) with a fluorophore-conjugated antibody to CEA, to highlight the tumor, can improve surgical resection and increase disease-free survival (DFS) and overall survival (OS) in orthotopic mouse models of human pancreatic cancer. METHODS We established nude-mouse models of human pancreatic cancer with surgical orthotopic implantation of the human BxPC-3 pancreatic cancer. Orthotopic tumors were allowed to develop for 2 weeks. Mice then underwent bright-light surgery (BLS) or FGS 24 h after intravenous injection of anti-CEA-Alexa Fluor 488. Completeness of resection was assessed from postoperative imaging. Mice were followed postoperatively until premorbid to determine DFS and OS. RESULTS Complete resection was achieved in 92 % of mice in the FGS group compared to 45.5 % in the BLS group (p = 0.001). FGS resulted in a smaller postoperative tumor burden (p = 0.01). Cure rates with FGS compared to BLS improved from 4.5 to 40 %, respectively (p = 0.01), and 1-year postoperative survival rates increased from 0 % with BLS to 28 % with FGS (p = 0.01). Median DFS increased from 5 weeks with BLS to 11 weeks with FGS (p = 0.0003). Median OS increased from 13.5 weeks with BLS to 22 weeks with FGS (p = 0.001). CONCLUSIONS FGS resulted in greater cure rates and longer DFS and OS using a fluorophore-conjugated anti-CEA antibody. FGS has potential to improve the surgical treatment of pancreatic cancer.
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Affiliation(s)
- Cristina A Metildi
- Department of Surgery, University of California San Diego, San Diego, CA, USA
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985
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Hiroshima Y, Maawy A, Metildi CA, Zhang Y, Uehara F, Miwa S, Yano S, Sato S, Murakami T, Momiyama M, Chishima T, Tanaka K, Bouvet M, Endo I, Hoffman RM. Successful fluorescence-guided surgery on human colon cancer patient-derived orthotopic xenograft mouse models using a fluorophore-conjugated anti-CEA antibody and a portable imaging system. J Laparoendosc Adv Surg Tech A 2014; 24:241-7. [PMID: 24494971 DOI: 10.1089/lap.2013.0418] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Fluorescence-guided surgery (FGS) can enable successful cancer surgery where bright-light surgery often cannot. There are three important issues for FGS going forward toward the clinic: (a) proper tumor labeling, (b) a simple portable imaging system for the operating room, and (c) patient-like mouse models in which to develop the technology. The present report addresses all three. MATERIALS AND METHODS Patient colon tumors were initially established subcutaneously in nonobese diabetic (NOD)/severe combined immune deficiency (SCID) mice immediately after surgery. The tumors were then harvested from NOD/SCID mice and passed orthotopically in nude mice to make patient-derived orthotopic xenograft (PDOX) models. Eight weeks after orthotopic implantation, a monoclonal anti-carcinoembryonic antigen (CEA) antibody conjugated with AlexaFluor 488 (Molecular Probes Inc., Eugene, OR) was delivered to the PDOX models as a single intravenous dose 24 hours before laparotomy. A hand-held portable fluorescence imaging device was used. RESULTS The primary tumor was clearly visible at laparotomy with the portable fluorescence imaging system. Frozen section microscopy of the resected specimen demonstrated that the anti-CEA antibody selectively labeled cancer cells in the colon cancer PDOX. The tumor was completely resected under fluorescence navigation. Histologic evaluation of the resected specimen demonstrated that cancer cells were not present in the margins, indicating successful tumor resection. The FGS animals remained tumor free for over 6 months. CONCLUSIONS The results of the present report indicate that FGS using a fluorophore-conjugated anti-CEA antibody and portable imaging system improves efficacy of resection for CEA-positive colorectal cancer. These data provide the basis for clinical trials.
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986
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Harada T, Sano K, Sato K, Watanabe R, Yu Z, Hanaoka H, Nakajima T, Choyke PL, Ptaszek M, Kobayashi H. Activatable organic near-infrared fluorescent probes based on a bacteriochlorin platform: synthesis and multicolor in vivo imaging with a single excitation. Bioconjug Chem 2014; 25:362-9. [PMID: 24450401 PMCID: PMC3983136 DOI: 10.1021/bc4005238] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Near infrared (NIR) fluorescent probes are ideal for in vivo imaging because they offer deeper tissue penetration and lower background autofluorescence. Although most fluorophores in this range are cyanine-based dyes, several new classes of fluorescent NIR probes have been developed. In this study, we developed organic bacteriochlorin derivatives, NMP4 and NMP5, which are excited with a single green light and emit different narrow, well-resolved bands in the NIR (peak of 739 and 770 nm for NMP4 and NMP5, respectively). When conjugated to galactosyl-human serum albumin (hGSA) or glucosyl-human serum albumin (glu-HSA), both targeting H-type lectins, including the β-d-galactose receptor expressing on ovarian cancer, these agents become targeted, activatable, single excitation, multicolor NIR fluorescence probes. After conjugation to either glu-HSA or hGSA, substantial quenching of fluorescence occurs that is reversed after cell binding and internalization. In vitro studies showed higher cancer cell uptake with NMP4 or NMP5 conjugated to hGSA compared to the same conjugates with glu-HSA. In vivo single excitation two-color imaging was performed after intraperitoneal injection of these agents into mice with disseminated ovarian cancer. Excited with a single green light, distinct NIR emission spectra from each fluorophore were detected and could be distinguished with spectral unmixing. In vivo results using a red fluorescence protein (RFP) labeled tumor model of disseminated ovarian cancer demonstrated high sensitivity and specificity for all probes. The success of single excitation, 2-color NIR fluorescence imaging with a new class of bacteriochlorin-based activatable fluorophores, NMP4 and NMP5, paves the way for further exploration of noncyanine dye-based NIR fluorophores.
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Affiliation(s)
- Toshiko Harada
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland 20892, United States
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987
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Zhu B, Rasmussen JC, Sevick-Muraca EM. Non-invasive fluorescence imaging under ambient light conditions using a modulated ICCD and laser diode. BIOMEDICAL OPTICS EXPRESS 2014; 5:562-72. [PMID: 24575349 PMCID: PMC3920885 DOI: 10.1364/boe.5.000562] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 01/22/2014] [Accepted: 01/22/2014] [Indexed: 05/06/2023]
Abstract
One limitation of fluorescence molecular imaging that can limit clinical implementation and hamper small animal imaging is the inability to eliminate ambient light. Herein, we demonstrate the ability to conduct rapid non-invasive, far-red and near-infrared fluorescence imaging in living animals and a phantom under ambient light conditions using a modulated image intensified CCD (ICCD) and a laser diode operated in homodyne detection. By mapping AC amplitude from three planar images at varying phase delays, we show improvement in target-to-background ratios (TBR) and reasonable signal-to-noise ratios (SNR) over continuous wave measurements. The rapid approach can be used to accurately collect fluorescence in situations where ambient light cannot be spectrally conditioned or controlled, such as in the case of fluorescent molecular image-guided surgery.
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988
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Hussain T, Nguyen QT. Molecular imaging for cancer diagnosis and surgery. Adv Drug Deliv Rev 2014; 66:90-100. [PMID: 24064465 DOI: 10.1016/j.addr.2013.09.007] [Citation(s) in RCA: 216] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 09/07/2013] [Accepted: 09/13/2013] [Indexed: 12/11/2022]
Abstract
Novel molecular imaging techniques have the potential to significantly enhance the diagnostic and therapeutic approaches for cancer treatment. For solid tumors in particular, novel molecular enhancers for imaging modalities such as US, CT, MRI and PET may facilitate earlier and more accurate diagnosis and staging which are prerequisites for successful surgical therapy. Enzymatically activatable "smart" molecular MRI probes seem particularly promising because of their potential to image tumors before and after surgical removal without re-administration of the probe to evaluate completeness of surgical resection. Furthermore, the use of "smart" MR probes as part of screening programs may enable detection of small tumors throughout the body in at-risk patient populations. Dual labeling of molecular MR probes with fluorescent dyes can add real time intraoperative guidance facilitating complete tumor resection and preservation of important structures. A truly theranostic approach with the further addition of therapeutic agents to the molecular probe for adjuvant therapy is conceivable for the future.
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989
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Ye J, Chi C, Xue Z, Wu P, An Y, Xu H, Zhang S, Tian J. Fast and robust reconstruction for fluorescence molecular tomography via a sparsity adaptive subspace pursuit method. BIOMEDICAL OPTICS EXPRESS 2014; 5:387-406. [PMID: 24575335 PMCID: PMC3920871 DOI: 10.1364/boe.5.000387] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/25/2013] [Accepted: 12/27/2013] [Indexed: 05/07/2023]
Abstract
Fluorescence molecular tomography (FMT), as a promising imaging modality, can three-dimensionally locate the specific tumor position in small animals. However, it remains challenging for effective and robust reconstruction of fluorescent probe distribution in animals. In this paper, we present a novel method based on sparsity adaptive subspace pursuit (SASP) for FMT reconstruction. Some innovative strategies including subspace projection, the bottom-up sparsity adaptive approach, and backtracking technique are associated with the SASP method, which guarantees the accuracy, efficiency, and robustness for FMT reconstruction. Three numerical experiments based on a mouse-mimicking heterogeneous phantom have been performed to validate the feasibility of the SASP method. The results show that the proposed SASP method can achieve satisfactory source localization with a bias less than 1mm; the efficiency of the method is much faster than mainstream reconstruction methods; and this approach is robust even under quite ill-posed condition. Furthermore, we have applied this method to an in vivo mouse model, and the results demonstrate the feasibility of the practical FMT application with the SASP method.
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Affiliation(s)
- Jinzuo Ye
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Chongwei Chi
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhenwen Xue
- Chengdu Institute of Huawei Technologies Co. Ltd., Chengdu, Sichuan 611731, China
| | - Ping Wu
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Yu An
- Beijing Jiaotong University, School of Computer and Information Technology, Department of Biomedical Engineering, Beijing 100044, China
| | - Han Xu
- Beijing Jiaotong University, School of Computer and Information Technology, Department of Biomedical Engineering, Beijing 100044, China
| | - Shuang Zhang
- Northeastern University, Sino-Dutch Biomedical and Information Engineering School, Shenyang, Liaoning 110819, China
| | - Jie Tian
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
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990
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Bertrand N, Wu J, Xu X, Kamaly N, Farokhzad OC. Cancer nanotechnology: the impact of passive and active targeting in the era of modern cancer biology. Adv Drug Deliv Rev 2014; 66:2-25. [PMID: 24270007 PMCID: PMC4219254 DOI: 10.1016/j.addr.2013.11.009] [Citation(s) in RCA: 1887] [Impact Index Per Article: 188.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 10/23/2013] [Accepted: 11/13/2013] [Indexed: 12/17/2022]
Abstract
Cancer nanotherapeutics are progressing at a steady rate; research and development in the field has experienced an exponential growth since early 2000's. The path to the commercialization of oncology drugs is long and carries significant risk; however, there is considerable excitement that nanoparticle technologies may contribute to the success of cancer drug development. The pace at which pharmaceutical companies have formed partnerships to use proprietary nanoparticle technologies has considerably accelerated. It is now recognized that by enhancing the efficacy and/or tolerability of new drug candidates, nanotechnology can meaningfully contribute to create differentiated products and improve clinical outcome. This review describes the lessons learned since the commercialization of the first-generation nanomedicines including DOXIL® and Abraxane®. It explores our current understanding of targeted and non-targeted nanoparticles that are under various stages of development, including BIND-014 and MM-398. It highlights the opportunities and challenges faced by nanomedicines in contemporary oncology, where personalized medicine is increasingly the mainstay of cancer therapy. We revisit the fundamental concepts of enhanced permeability and retention effect (EPR) and explore the mechanisms proposed to enhance preferential "retention" in the tumor, whether using active targeting of nanoparticles, binding of drugs to their tumoral targets or the presence of tumor associated macrophages. The overall objective of this review is to enhance our understanding in the design and development of therapeutic nanoparticles for treatment of cancers.
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Affiliation(s)
- Nicolas Bertrand
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jun Wu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
| | - Xiaoyang Xu
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
| | - Nazila Kamaly
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
| | - Omid C Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA.
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991
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Wang Y, Zhou K, Huang G, Hensley C, Huang X, Ma X, Zhao T, Sumer BD, DeBerardinis RJ, Gao J. A nanoparticle-based strategy for the imaging of a broad range of tumours by nonlinear amplification of microenvironment signals. NATURE MATERIALS 2014; 13:204-12. [PMID: 24317187 PMCID: PMC3946908 DOI: 10.1038/nmat3819] [Citation(s) in RCA: 592] [Impact Index Per Article: 59.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 10/24/2013] [Indexed: 05/18/2023]
Abstract
Stimuli-responsive nanomaterials are increasingly important in a variety of applications such as biosensing, molecular imaging, drug delivery and tissue engineering. For cancer detection, a paramount challenge still exists in the search for methods that can illuminate tumours universally regardless of their genotypes and phenotypes. Here we capitalized on the acidic, angiogenic tumour microenvironment to achieve the detection of tumour tissues in a wide variety of mouse cancer models. This was accomplished using ultra pH-sensitive fluorescent nanoprobes that have tunable, exponential fluorescence activation on encountering subtle, physiologically relevant pH transitions. These nanoprobes were silent in the circulation, and then strongly activated (>300-fold) in response to the neovasculature or to the low extracellular pH in tumours. Thus, we have established non-toxic, fluorescent nanoreporters that can nonlinearly amplify tumour microenvironmental signals, permitting the identification of tumour tissue independently of histological type or driver mutation, and detection of acute treatment responses much more rapidly than conventional imaging approaches.
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Affiliation(s)
- Yiguang Wang
- Department of Pharmacology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Kejin Zhou
- Department of Pharmacology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Gang Huang
- Department of Pharmacology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Chris Hensley
- Children’s Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Xiaonan Huang
- Department of Pharmacology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Xinpeng Ma
- Department of Pharmacology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Tian Zhao
- Department of Pharmacology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Baran D. Sumer
- Department of Otolaryngology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Ralph J. DeBerardinis
- Children’s Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
| | - Jinming Gao
- Department of Pharmacology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, USA
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992
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Abstract
While nanoparticles are usually designed for targeted drug delivery, they can also simultaneously provide diagnostic information by a variety of in vivo imaging methods. These diagnostic capabilities make use of specific properties of nanoparticle core materials. Near-infrared fluorescent probes provide optical detection of cells targeted by real-time nanoparticle-distribution studies within the organ compartments of live, anesthetized animals. By combining different imaging modalities, we can start with deep-body imaging by magnetic resonance imaging or computed tomography, and by using optical imaging, get down to the resolution required for real-time fluorescence-guided surgery.
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Affiliation(s)
- Jaehong Key
- Weldon School of Biomedical Engineering, West Lafayette, IN, USA ; Birck Nanotechnology Center, West Lafayette, IN, USA ; Bindley Bioscience Center, West Lafayette, IN, USA
| | - James F Leary
- Weldon School of Biomedical Engineering, West Lafayette, IN, USA ; Birck Nanotechnology Center, West Lafayette, IN, USA ; Bindley Bioscience Center, West Lafayette, IN, USA ; College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
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993
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Chakravarty R, Goel S, Cai W. Nanobody: the "magic bullet" for molecular imaging? Am J Cancer Res 2014; 4:386-98. [PMID: 24578722 PMCID: PMC3936291 DOI: 10.7150/thno.8006] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 01/07/2014] [Indexed: 12/13/2022] Open
Abstract
Molecular imaging involves the non-invasive investigation of biological processes in vivo at the cellular and molecular level, which can play diverse roles in better understanding and treatment of various diseases. Recently, single domain antigen-binding fragments known as 'nanobodies' were bioengineered and tested for molecular imaging applications. Small molecular size (~15 kDa) and suitable configuration of the complementarity determining regions (CDRs) of nanobodies offer many desirable features suitable for imaging applications, such as rapid targeting and fast blood clearance, high solubility, high stability, easy cloning, modular nature, and the capability of binding to cavities and difficult-to-access antigens. Using nanobody-based probes, several imaging techniques such as radionuclide-based, optical and ultrasound have been employed for visualization of target expression in various disease models. This review summarizes the recent developments in the use of nanobody-based probes for molecular imaging applications. The preclinical data reported to date are quite promising, and it is expected that nanobody-based molecular imaging agents will play an important role in the diagnosis and management of various diseases.
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994
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Serpe L, Gallicchio M, Canaparo R, Dosio F. Targeted treatment of folate receptor-positive platinum-resistant ovarian cancer and companion diagnostics, with specific focus on vintafolide and etarfolatide. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2014; 7:31-42. [PMID: 24516337 PMCID: PMC3917542 DOI: 10.2147/pgpm.s58374] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Among the gynecological malignancies, ovarian cancer is the leading cause of mortality in developed countries. Treatment of ovarian cancer is based on surgery integrated with chemotherapy. Platinum-based drugs (cisplatin and carboplatin) comprise the core of first-line chemotherapy for patients with advanced ovarian cancer. Platinum-resistant ovarian cancer can be treated with cytotoxic chemotherapeutics such as paclitaxel, topotecan, PEGylated liposomal doxorubicin, or gemcitabine, but many patients eventually relapse on treatment. Targeted therapies based on agents specifically directed to overexpressed receptors, or to selected molecular targets, may be the future of clinical treatment. In this regard, overexpression of folate receptor-α on the surface of almost all epithelial ovarian cancers makes this receptor an excellent "tumor-associated antigen". With appropriate use of spacers/linkers, folate-targeted drugs can be distributed within the body, where they preferentially bind to ovarian cancer cells and are released inside their target cells. Here they can exert their desired cytotoxic function. Based on this strategy, 12 years after it was first described, a folate-targeted vinblastine derivative has now reached Phase III clinical trials in ovarian cancer. This review examines the importance of folate targeting, the state of the art of a vinblastine folate-targeted agent (vintafolide) for treating platinum-resistant ovarian cancer, and its diagnostic companion (etarfolatide) as a prognostic agent. Etarfolatide is a valuable noninvasive diagnostic imaging agent with which to select ovarian cancer patient populations that may benefit from this specific targeted therapy.
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Affiliation(s)
- Loredana Serpe
- Department of Drug Science and Technology, University of Turin, Italy
| | | | - Roberto Canaparo
- Department of Drug Science and Technology, University of Turin, Italy
| | - Franco Dosio
- Department of Drug Science and Technology, University of Turin, Italy
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995
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Noninvasive positron emission tomography and fluorescence imaging of CD133+ tumor stem cells. Proc Natl Acad Sci U S A 2014; 111:E692-701. [PMID: 24469819 DOI: 10.1073/pnas.1314189111] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
A technology that visualizes tumor stem cells with clinically relevant tracers could have a broad impact on cancer diagnosis and treatment. The AC133 epitope of CD133 currently is one of the best-characterized tumor stem cell markers for many intra- and extracranial tumor entities. Here we demonstrate the successful noninvasive detection of AC133(+) tumor stem cells by PET and near-infrared fluorescence molecular tomography in subcutaneous and orthotopic glioma xenografts using antibody-based tracers. Particularly, microPET with (64)Cu-NOTA-AC133 mAb yielded high-quality images with outstanding tumor-to-background contrast, clearly delineating subcutaneous tumor stem cell-derived xenografts from surrounding tissues. Intracerebral tumors as small as 2-3 mm also were clearly discernible, and the microPET images reflected the invasive growth pattern of orthotopic cancer stem cell-derived tumors with low density of AC133(+) cells. These data provide a basis for further preclinical and clinical use of the developed tracers for high-sensitivity and high-resolution monitoring of AC133(+) tumor stem cells.
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996
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Wu X, Tian Y, Yu M, Han J, Han S. A targetable acid-responsive micellar system for signal activation based high performance surgical resolution of tumors. Biomater Sci 2014; 2:972-979. [DOI: 10.1039/c4bm00007b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
High-performance illumination of subcutaneous tumor and liver tumor foci at sub-millimeter levels was achieved with lectin-targeted glyco-micelles which become fluorescent upon internalization into tumor lysosomes.
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Affiliation(s)
- Xuanjun Wu
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- The Key Laboratory for Chemical Biology of Fujian Province
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- and Innovation Center for Cell Biology
| | - Yunpeng Tian
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- The Key Laboratory for Chemical Biology of Fujian Province
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- and Innovation Center for Cell Biology
| | - Mingzhu Yu
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- The Key Laboratory for Chemical Biology of Fujian Province
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- and Innovation Center for Cell Biology
| | - Jiahuai Han
- State Key Laboratory of Cellular Stress Biology
- Innovation Center for Cell Biology
- School of Life Sciences
- Xiamen University
- Xiamen, China
| | - Shoufa Han
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- The Key Laboratory for Chemical Biology of Fujian Province
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- and Innovation Center for Cell Biology
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997
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Okusanya OT, Deshpande C, Barbosa EM, Aggarwal C, Simone CB, Jiang J, Judy R, DeJesus E, Albelda S, Nie S, Low PS, Singhal S. Molecular imaging to identify tumor recurrence following chemoradiation in a hostile surgical environment. Mol Imaging 2014; 13:10.2310/7290.2014.00051. [PMID: 25442640 PMCID: PMC10987200 DOI: 10.2310/7290.2014.00051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Surgical biopsy of potential tumor recurrence is a common challenge facing oncologists, surgeons, and cancer patients. Imaging modalities have limited ability to accurately detect recurrent cancer in fields affected by previous surgery, chemotherapy, or radiation. However, definitive tissue diagnosis is often needed to initiate treatment and to direct therapy. We sought to determine if a targeted fluorescent intraoperative molecular imaging technique could be applied in a clinical setting to assist a surgical biopsy in a "hostile" field. We describe the use of a folate-fluorescein conjugate to direct the biopsy of a suspected recurrent lung adenocarcinoma invading the mediastinum that had been previously treated with chemoradiation. We found that intraoperative imaging allowed the identification of small viable tumor deposits that were otherwise indistinguishable from scar and necrosis. Our operative observations were confirmed by histology, fluorescence microscopy, and immunohistochemistry. Our results demonstrate one possible application and clinical value of intraoperative molecular imaging.
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998
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Wu S, Han S, Han J, Su X. A photothermal cell viability-reporting theranostic nanoprobe for intraoperative optical ablation and tracking of tumors. Chem Commun (Camb) 2014; 50:8014-7. [DOI: 10.1039/c4cc01823k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photothermal acid-responsive nanoprobe was developed for intraoperative detection and photothermal killing of tumors, and tracking of therapeutic effects.
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Affiliation(s)
- Shuqi Wu
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- Key Laboratory for Chemical Biology of Fujian Province
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- Innovation Center for Cell Biology
| | - Shoufa Han
- Department of Chemical Biology
- College of Chemistry and Chemical Engineering
- Key Laboratory for Chemical Biology of Fujian Province
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- Innovation Center for Cell Biology
| | - Jiahuai Han
- State Key Laboratory of Cellular Stress Biology
- Innovation Center for Cell Biology
- School of Life Sciences
- Xiamen University
- Xiamen 361005, China
| | - Xinhui Su
- Department of Nuclear Medicine
- Zhongshan Hospital
- Xiamen University
- Xiamen 361004, China
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999
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Lee H, Kim J, Kim H, Kim Y, Choi Y. A folate receptor-specific activatable probe for near-infrared fluorescence imaging of ovarian cancer. Chem Commun (Camb) 2014; 50:7507-7510. [DOI: 10.1039/c4cc02301c] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
A folate receptor-specific activatable probe for in vivo near-infrared fluorescence imaging with a high target-to-background ratio was synthesized.
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Affiliation(s)
- Hawon Lee
- Molecular Imaging & Therapy Branch
- National Cancer Center
- Goyang-si, Korea
| | - Jisu Kim
- Molecular Imaging & Therapy Branch
- National Cancer Center
- Goyang-si, Korea
| | - Hyunjin Kim
- Molecular Imaging & Therapy Branch
- National Cancer Center
- Goyang-si, Korea
| | - Youngmi Kim
- Department of Chemistry
- Institute of Nanosensor and Biotechnology
- Dankook University
- Yongin-si, Korea
| | - Yongdoo Choi
- Molecular Imaging & Therapy Branch
- National Cancer Center
- Goyang-si, Korea
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1000
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Tian R, Li M, Wang J, Yu M, Kong X, Feng Y, Chen Z, Li Y, Huang W, Wu W, Hong Z. An intracellularly activatable, fluorogenic probe for cancer imaging. Org Biomol Chem 2014; 12:5365-74. [DOI: 10.1039/c4ob00297k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A newly designed, dual-functional probe based on intracellular activation has been successfully developed for the detection of cancer cells.
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Affiliation(s)
- Ruisong Tian
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
- College of Material Science and Chemical Engineering
| | - Mingjie Li
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
| | - Jin Wang
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
| | - Min Yu
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
| | - Xiuqi Kong
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
| | - Yupeng Feng
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
| | - Zeming Chen
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
| | - Yuxi Li
- College of Material Science and Chemical Engineering
- Tianjin University of Science and Technology
- Tianjin 300457, P. R. China
| | | | - Wenjie Wu
- College of Material Science and Chemical Engineering
- Tianjin University of Science and Technology
- Tianjin 300457, P. R. China
| | - Zhangyong Hong
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071, P. R. China
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