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Metebi A, Kauffman N, Xu L, Singh SK, Nayback C, Fan J, Johnson N, Diemer J, Grimm T, Zamiara M, Zinn KR. Pb-214/Bi-214-TCMC-Trastuzumab inhibited growth of ovarian cancer in preclinical mouse models. Front Chem 2024; 11:1322773. [PMID: 38333550 PMCID: PMC10850308 DOI: 10.3389/fchem.2023.1322773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/29/2023] [Indexed: 02/10/2024] Open
Abstract
Introduction: Better treatments for ovarian cancer are needed to eliminate residual peritoneal disease after initial debulking surgery. The present study evaluated Trastuzumab to deliver Pb-214/Bi-214 for targeted alpha therapy (TAT) for HER2-positive ovarian cancer in mouse models of residual disease. This study is the first report of TAT using a novel Radon-222 generator to produce short-lived Lead-214 (Pb-214, t1/2 = 26.8 min) in equilibrium with its daughter Bismuth-214 (Bi-214, t1/2 = 19.7 min); referred to as Pb-214/Bi-214. In this study, Pb-214/Bi-214-TCMC-Trastuzumab was tested. Methods: Trastuzumab and control IgG antibody were conjugated with TCMC chelator and radiolabeled with Pb-214/Bi-214 to yield Pb-214/Bi-214-TCMC-Trastuzumab and Pb-214/Bi-214-TCMC-IgG1. The decay of Pb-214/Bi-214 yielded α-particles for TAT. SKOV3 and OVAR3 human ovarian cancer cell lines were tested for HER2 levels. The effects of Pb-214/Bi-214-TCMC-Trastuzumab and appropriate controls were compared using clonogenic assays and in mice bearing peritoneal SKOV3 or OVCAR3 tumors. Mice control groups included untreated, Pb-214/Bi-214-TCMC-IgG1, and Trastuzumab only. Results and discussion: SKOV3 cells had 590,000 ± 5,500 HER2 receptors/cell compared with OVCAR3 cells at 7,900 ± 770. In vitro clonogenic assays with SKOV3 cells showed significantly reduced colony formation after Pb-214/Bi-214-TCMC-Trastuzumab treatment compared with controls. Nude mice bearing luciferase-positive SKOV3 or OVCAR3 tumors were treated with Pb-214/Bi-214-TCMC-Trastuzumab or appropriate controls. Two 0.74 MBq doses of Pb-214/Bi-214-TCMC-Trastuzumab significantly suppressed the growth of SKOV3 tumors for 60 days, without toxicity, compared with three control groups (untreated, Pb-214/Bi-214-TCMC-IgG1, or Trastuzumab only). Mice-bearing OVCAR3 tumors had effective therapy without toxicity with two 0.74 MBq doses of Pb-214/Bi-214-TCMC-trastuzumab or Pb-214/Bi-214-TCMC-IgG1. Together, these data indicated that Pb-214/Bi-214 from a Rn-222 generator system was successfully applied for TAT. Pb-214/Bi-214-TCMC-Trastuzumab was effective to treat mouse xenograft models. Advantages of Pb-214/Bi-214 from the novel generator systems include high purity, short half-life for fractioned therapy, and hourly availability from the Rn-222 generator system. This platform technology can be applied for a variety of cancer treatment strategies.
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Affiliation(s)
- Abdullah Metebi
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
- Radiological Sciences Department, Taif University, Taif, Saudi Arabia
| | - Nathan Kauffman
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
| | - Lu Xu
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Biomedical Engineering, Michigan State University, East Lansing, MI, United States
| | - Satyendra Kumar Singh
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
| | - Chelsea Nayback
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
| | - Jinda Fan
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Department of Chemistry, Michigan State University, East Lansing, MI, United States
- Radiology, Michigan State University, East Lansing, MI, United States
| | | | | | | | | | - Kurt R. Zinn
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
- Biomedical Engineering, Michigan State University, East Lansing, MI, United States
- Radiology, Michigan State University, East Lansing, MI, United States
- Small Animal Clinical Sciences, Michigan State University, East Lansing, MI, United States
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2
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Garcia-Prada CD, Carmes L, Atis S, Parach A, Bertolet A, Jarlier M, Poty S, Garcia DS, Shin WG, Du Manoir S, Schuemann J, Tillement O, Lux F, Constanzo J, Pouget JP. Gadolinium-Based Nanoparticles Sensitize Ovarian Peritoneal Carcinomatosis to Targeted Radionuclide Therapy. J Nucl Med 2023; 64:1956-1964. [PMID: 37857502 PMCID: PMC10690115 DOI: 10.2967/jnumed.123.265418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 08/28/2023] [Indexed: 10/21/2023] Open
Abstract
Ovarian cancer (OC) is the most lethal gynecologic malignancy (5-y overall survival rate, 46%). OC is generally detected when it has already spread to the peritoneal cavity (peritoneal carcinomatosis). This study investigated whether gadolinium-based nanoparticles (Gd-NPs) increase the efficacy of targeted radionuclide therapy using [177Lu]Lu-DOTA-trastuzumab (an antibody against human epidermal growth factor receptor 2). Gd-NPs have radiosensitizing effects in conventional external-beam radiotherapy and have been tested in clinical phase II trials. Methods: First, the optimal activity of [177Lu]Lu-DOTA-trastuzumab (10, 5, or 2.5 MBq) combined or not with 10 mg of Gd-NPs (single injection) was investigated in athymic mice bearing intraperitoneal OC cell (human epidermal growth factor receptor 2-positive) tumor xenografts. Next, the therapeutic efficacy and toxicity of 5 MBq of [177Lu]Lu-DOTA-trastuzumab with Gd-NPs (3 administration regimens) were evaluated. NaCl, trastuzumab plus Gd-NPs, and [177Lu]Lu-DOTA-trastuzumab alone were used as controls. Biodistribution and dosimetry were determined, and Monte Carlo simulation of energy deposits was performed. Lastly, Gd-NPs' subcellular localization and uptake, and the cytotoxic effects of the combination, were investigated in 3 cancer cell lines to obtain insights into the involved mechanisms. Results: The optimal [177Lu]Lu-DOTA-trastuzumab activity when combined with Gd-NPs was 5 MBq. Moreover, compared with [177Lu]Lu-DOTA-trastuzumab alone, the strongest therapeutic efficacy (tumor mass reduction) was obtained with 2 injections of 5 mg of Gd-NPs/d (separated by 6 h) at 24 and 72 h after injection of 5 MBq of [177Lu]Lu-DOTA-trastuzumab. In vitro experiments showed that Gd-NPs colocalized with lysosomes and that their radiosensitizing effect was mediated by oxidative stress and inhibited by deferiprone, an iron chelator. Exposure of Gd-NPs to 177Lu increased the Auger electron yield but not the absorbed dose. Conclusion: Targeted radionuclide therapy can be combined with Gd-NPs to increase the therapeutic effect and reduce the injected activities. As Gd-NPs are already used in the clinic, this combination could be a new therapeutic approach for patients with ovarian peritoneal carcinomatosis.
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Affiliation(s)
- Clara Diaz Garcia-Prada
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Léna Carmes
- Institut Lumière Matière, Université Claude Bernard Lyon 1, Villeurbanne, France
- NH TherAguix S.A., Meylan, France
| | - Salima Atis
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Ali Parach
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Alejandro Bertolet
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Marta Jarlier
- Biometrics Unit, Montpellier Cancer Institute, University of Montpellier, Montpellier, France; and
| | - Sophie Poty
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Daniel Suarez Garcia
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Wook-Geun Shin
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Stanislas Du Manoir
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France
| | - Jan Schuemann
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Olivier Tillement
- Institut Lumière Matière, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - François Lux
- Institut Lumière Matière, Université Claude Bernard Lyon 1, Villeurbanne, France
- Institut Universitaire de France, Paris, France
| | - Julie Constanzo
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France;
| | - Jean-Pierre Pouget
- Institut de Recherche en Cancérologie de Montpellier, Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France;
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3
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McDonagh AW, McNeil BL, Rousseau J, Roberts RJ, Merkens H, Yang H, Bénard F, Ramogida CF. Development of a multi faceted platform containing a tetrazine, fluorophore and chelator: synthesis, characterization, radiolabeling, and immuno-SPECT imaging. EJNMMI Radiopharm Chem 2022; 7:12. [PMID: 35666363 PMCID: PMC9170845 DOI: 10.1186/s41181-022-00164-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/23/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Combining optical (fluorescence) imaging with nuclear imaging has the potential to offer a powerful tool in personal health care, where nuclear imaging offers in vivo functional whole-body visualization, and the fluorescence modality may be used for image-guided tumor resection. Varying chemical strategies have been exploited to fuse both modalities into one molecular entity. When radiometals are employed in nuclear imaging, a chelator is typically inserted into the molecule to facilitate radiolabeling; the availability of the chelator further expands the potential use of these platforms for targeted radionuclide therapy if a therapeutic radiometal is employed. Herein, a novel mixed modality scaffold which contains a tetrazine (Tz)--for biomolecule conjugation, fluorophore-for optical imaging, and chelator-for radiometal incorporation, in one construct is presented. The novel platform was characterized for its fluorescence properties, radiolabeled with single-photon emission computed tomography (SPECT) isotope indium-111 (111In3+) and therapeutic alpha emitter actinium-225 (225Ac3+). Both radiolabels were conjugated in vitro to trans-cyclooctene (TCO)-modified trastuzumab; biodistribution and immuno-SPECT imaging of the former conjugate was assessed. RESULTS Key to the success of the platform synthesis was incorporation of a 4,4'-dicyano-BODIPY fluorophore. The route gives access to an advanced intermediate where final chelator-incorporated compounds can be easily accessed in one step prior to radiolabeling or biomolecule conjugation. The DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) conjugate was prepared, displayed good fluorescence properties, and was successfully radiolabeled with 111In & 225Ac in high radiochemical yield. Both complexes were then separately conjugated in vitro to TCO modified trastuzumab through an inverse electron demand Diels-Alder (IEDDA) reaction with the Tz. Pilot small animal in vivo immuno-SPECT imaging with [111In]In-DO3A-BODIPY-Tz-TCO-trastuzumab was also conducted and exhibited high tumor uptake (21.2 ± 5.6%ID/g 6 days post-injection) with low uptake in non-target tissues. CONCLUSIONS The novel platform shows promise as a multi-modal probe for theranostic applications. In particular, access to an advanced synthetic intermediate where tailored chelators can be incorporated in the last step of synthesis expands the potential use of the scaffold to other radiometals. Future studies including validation of ex vivo fluorescence imaging and exploiting the pre-targeting approach available through the IEDDA reaction are warranted.
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Affiliation(s)
- Anthony W McDonagh
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - Brooke L McNeil
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.,Life Sciences Division, TRIUMF, Vancouver, BC, V6T 2A3, Canada
| | - Julie Rousseau
- Department of Molecular Oncology, BC Cancer, Vancouver, BC, V5Z 1L3, Canada
| | - Ryan J Roberts
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - Helen Merkens
- Department of Molecular Oncology, BC Cancer, Vancouver, BC, V5Z 1L3, Canada
| | - Hua Yang
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.,Life Sciences Division, TRIUMF, Vancouver, BC, V6T 2A3, Canada
| | - François Bénard
- Department of Molecular Oncology, BC Cancer, Vancouver, BC, V5Z 1L3, Canada
| | - Caterina F Ramogida
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada. .,Life Sciences Division, TRIUMF, Vancouver, BC, V6T 2A3, Canada.
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4
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Sharma SK, Glaser JM, Edwards KJ, Sarbisheh EK, Salih AK, Lewis JS, Price EW. A Systematic Evaluation of Antibody Modification and 89Zr-Radiolabeling for Optimized Immuno-PET. Bioconjug Chem 2021; 32:1177-1191. [PMID: 32197571 PMCID: PMC9423892 DOI: 10.1021/acs.bioconjchem.0c00087] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Immuno-PET using desferrioxamine (DFO)-conjugated zirconium-89 ([89Zr]Zr4+)-labeled antibodies is a powerful tool used for preclinical and clinical molecular imaging. However, a comprehensive study evaluating the variables involved in DFO-conjugation and 89Zr-radiolabeling of antibodies and their impact on the in vitro and in vivo behavior of the resulting radioimmunoconjugates has not been adequately performed. Here, we synthesized different DFO-conjugates of the HER2-targeting antibody (Ab)-trastuzumab, dubbed T5, T10, T20, T60, and T200-to indicate the molar equivalents of DFO used for bioconjugation. Next we radiolabeled the immunoconjugates with ([89Zr]Zr4+) under a comprehensive set of reaction conditions including different buffers (PBS, chelexed-PBS, TRIS/HCl, HEPES; ± radioprotectants), different reaction volumes (0.1-1 mL), variable amounts of DFO-conjugated Ab (5, 25, 50 μg), and radioactivity (0.2-1.0 mCi; 7.4-37 MBq). We evaluated the effects of these variables on radiochemical yield (RCY), molar activity (Am)/specific activity (As), immunoreactive fraction, and ultimately the in vivo biodistribution profile and tumor targeting ability of the trastuzumab radioimmunoconjugates. We show that increasing the degree of DFO conjugation to trastuzumab increased the RCY (∼90%) and Am/As (∼194 MBq/nmol; 35 mCi/mg) but decreased the HER2-binding affinity (3.5×-4.6×) and the immunoreactive fraction of trastuzumab down to 50-64%, which translated to dramatically inferior in vivo performance of the radioimmunoconjugate. Cell-based immunoreactivity assays and standard binding affinity analyses using surface plasmon resonance (SPR) did not predict the poor in vivo performance of the most extreme T200 conjugate. However, SPR-based concentration free calibration analysis yielded active antibody concentration and was predictive of the in vivo trends. Positron emission tomography (PET) imaging and biodistribution studies in a HER2-positive xenograft model revealed activity concentrations of 38.7 ± 3.8 %ID/g in the tumor and 6.3 ± 4.1 %ID/g in the liver for ([89Zr]Zr4+)-T5 (∼1.4 ± 0.5 DFOs/Ab) at 120 h after injection of the radioimmunoconjugates. On the other hand, ([89Zr]Zr4+)-T200 (10.9 ± 0.7 DFOs/Ab) yielded 16.2 ± 3.2 %ID/g in the tumor versus 27.5 ± 4.1 %ID/g in the liver. Collectively, our findings suggest that synthesizing trastuzumab immunoconjugates bearing 1-3 DFOs per Ab (T5 and T10) combined with radiolabeling performed in low reaction volumes using Chelex treated PBS or HEPEs without a radioprotectant provided radioimmunoconjugates having high Am/As (97 MBq/nmol; 17.5 ± 2.2 mCi/mg), highly preserved immunoreactive fractions (86-93%), and favorable in vivo biodistribution profile with excellent tumor uptake.
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Affiliation(s)
- Sai Kiran Sharma
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Jonathan M. Glaser
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Kimberly J. Edwards
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | | | - Akam K. Salih
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK, S7N-5C9, Canada
| | - Jason S. Lewis
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Radiochemistry and Molecular Imaging Probes Core, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Department of Pharmacology, Weill Cornell Medical College, New York, NY, 10065, USA
- Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Department of Radiology, Weill Cornell Medical College, New York, NY, 10065, USA
| | - Eric W. Price
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK, S7N-5C9, Canada
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5
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Oroujeni M, Rinne SS, Vorobyeva A, Loftenius A, Feldwisch J, Jonasson P, Chernov V, Orlova A, Frejd FY, Tolmachev V. Preclinical Evaluation of 99mTc-ZHER2:41071, a Second-Generation Affibody-Based HER2-Visualizing Imaging Probe with a Low Renal Uptake. Int J Mol Sci 2021; 22:ijms22052770. [PMID: 33803361 PMCID: PMC7967187 DOI: 10.3390/ijms22052770] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 12/20/2022] Open
Abstract
Radionuclide imaging of HER2 expression in tumours may enable stratification of patients with breast, ovarian, and gastroesophageal cancers for HER2-targeting therapies. A first-generation HER2-binding affibody molecule [99mTc]Tc-ZHER2:V2 demonstrated favorable imaging properties in preclinical studies. Thereafter, the affibody scaffold has been extensively modified, which increased its melting point, improved storage stability, and increased hydrophilicity of the surface. In this study, a second-generation affibody molecule (designated ZHER2:41071) with a new improved scaffold has been prepared and characterized. HER2-binding, biodistribution, and tumour-targeting properties of [99mTc]Tc-labelled ZHER2:41071 were investigated. These properties were compared with properties of the first-generation affibody molecules, [99mTc]Tc-ZHER2:V2 and [99mTc]Tc-ZHER2:2395. [99mTc]Tc-ZHER2:41071 bound specifically to HER2 expressing cells with an affinity of 58 ± 2 pM. The renal uptake for [99mTc]Tc-ZHER2:41071 and [99mTc]Tc-ZHER2:V2 was 25–30 fold lower when compared with [99mTc]Tc-ZHER2:2395. The uptake in tumour and kidney for [99mTc]Tc-ZHER2:41071 and [99mTc]Tc-ZHER2:V2 in SKOV-3 xenografts was similar. In conclusion, an extensive re-engineering of the scaffold did not compromise imaging properties of the affibody molecule labelled with 99mTc using a GGGC chelator. The new probe, [99mTc]Tc-ZHER2:41071 provided the best tumour-to-blood ratio compared to HER2-imaging probes for single photon emission computed tomography (SPECT) described in the literature so far. [99mTc]Tc-ZHER2:41071 is a promising candidate for further clinical translation studies.
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MESH Headings
- Animals
- Antineoplastic Agents, Immunological/chemistry
- Antineoplastic Agents, Immunological/pharmacokinetics
- Antineoplastic Agents, Immunological/pharmacology
- Cell Line, Tumor
- Female
- Humans
- Kidney/diagnostic imaging
- Kidney/metabolism
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Neoplasms, Experimental/diagnostic imaging
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/metabolism
- Radiopharmaceuticals/chemical synthesis
- Radiopharmaceuticals/chemistry
- Radiopharmaceuticals/pharmacokinetics
- Radiopharmaceuticals/pharmacology
- Receptor, ErbB-2/metabolism
- Technetium/chemistry
- Technetium/pharmacokinetics
- Technetium/pharmacology
- Tissue Distribution
- Tomography, Emission-Computed, Single-Photon
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Maryam Oroujeni
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
| | - Sara S. Rinne
- Department of Medicinal Chemistry, Uppsala University, 751 83 Uppsala, Sweden;
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia;
| | | | | | - Per Jonasson
- Affibody AB, 171 65 Solna, Sweden; (A.L.); (J.F.); (P.J.)
| | - Vladimir Chernov
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia;
- Nuclear Medicine Department, Cancer Research Institute, Tomsk National Research Medical Center Russian Academy of Sciences, 634009 Tomsk, Russia
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, 751 83 Uppsala, Sweden;
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia;
- Correspondence: ; Tel.: +46-073-9922846
| | - Fredrik Y. Frejd
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
- Affibody AB, 171 65 Solna, Sweden; (A.L.); (J.F.); (P.J.)
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
- Department of Medicinal Chemistry, Uppsala University, 751 83 Uppsala, Sweden;
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6
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Sana A, Rasheed R, Rafique A, Khaliq T, Jabeen N, Murtaza G. Gynaecological Cancer Diagnostics: 99mTc-Cisplatin Complex as a Future Approach for Early, Prompt and Efficient Diagnosis of Gynaecological Cancer. Curr Med Imaging 2020; 15:611-621. [PMID: 32008509 DOI: 10.2174/1573405614666180809123233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 07/06/2018] [Accepted: 07/16/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Gynaecological cancers (GCCa) are common and have a significant mortality rate all over the world. Early diagnosis of cancer can play a key role in the treatment and survival of a patient. Identification, staging, treatment, and monitoring of gynaecological malignancies is being done successfully by nuclear medicines. DISCUSSION Currently, single-photon emission computed tomography (SPECT) and positron emission tomography (PET) centered imaging techniques are being developed for use in patients with GCCa as a diagnostic tool. The present work elucidates several clinical studies on the use of radiopharmaceuticals, based on their effectiveness, in the early detection and management of GCCa. It also highlights the importance of reconsidering the biology for nuclear imaging as a future modality for early, rapid and efficient diagnosis of gynecological cancers. This comprehensive review is a part of our study designed to detect gynaecological cancers at an early stage using radionuclide complex, 99m Tc-Cisplatin. CONCLUSION This article summarizes the significance of radioscintigraphy such as single-photon emission computed tomography (SPECT) and PET for identification of GCCa in the experimental humans and animals.
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Affiliation(s)
- Ayesha Sana
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Rashid Rasheed
- Institute of Nuclear, Medicines, Oncology and Radiations (INOR), Ayub Medical Hospital, Abbottabad, Pakistan
| | - Asma Rafique
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Tooba Khaliq
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Nazish Jabeen
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Ghulam Murtaza
- Department of Pharmacy, COMSATS University Islamabad, Lahore, Pakistan
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7
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Safety and Outcome Measures of First-in-Human Intraperitoneal α Radioimmunotherapy With 212Pb-TCMC-Trastuzumab. Am J Clin Oncol 2019; 41:716-721. [PMID: 27906723 PMCID: PMC5449266 DOI: 10.1097/coc.0000000000000353] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PURPOSE One-year monitoring of patients receiving intraperitoneal (IP) Pb-TCMC-trastuzumab to provide long-term safety and outcome data. A secondary objective was to study 7 tumor markers for correlation with outcome. METHODS Eighteen patients with relapsed intra-abdominal human epidermal growth factor receptor-2 expressing peritoneal metastases were treated with a single IP infusion of Pb-TCMC-trastuzumab, delivered <4 h after 4 mg/kg IV trastuzumab. Seven tumor markers were studied for correlation with outcome. RESULTS Six dose levels (7.4, 9.6, 12.6, 16.3, 21.1, 27.4 MBq/m) were well tolerated with early possibly agent-related adverse events being mild, transient, and not dose dependent. These included asymptomatic, abnormal laboratory values. No late renal, liver, cardiac, or other toxicity was noted up to 1 year. There were no clinical signs or symptoms of an immune response to Pb-TCMC-trastuzumab, and assays to detect an immune response to this conjugate were negative for all tested. Tumor marker studies in ovarian cancer patients showed a trend of decreasing Cancer antigen 72-4 (CA 72-4) aka tumor-associated glycoprotein 72 (TAG-72) and tumor growth with increasing administered radioactivity. Other tumor markers, including carbohydrate antigen (CA125), human epididymis protein 4 (HE-4), serum amyloid A (SAA), mesothelin, interleukin-6 (IL-6), and carcinoembryonic antigen (CEA) did not correlate with imaging outcome. CONCLUSIONS IP Pb-TCMC-trastuzumab up to 27 MBq/m seems safe for patients with peritoneal carcinomatosis who have failed standard therapies. Serum TAG-72 levels better correlated to imaging changes in ovarian cancer patients than the more common tumor marker, CA125.
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8
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Lucas AT, Robinson R, Schorzman AN, Piscitelli JA, Razo JF, Zamboni WC. Pharmacologic Considerations in the Disposition of Antibodies and Antibody-Drug Conjugates in Preclinical Models and in Patients. Antibodies (Basel) 2019; 8:E3. [PMID: 31544809 PMCID: PMC6640706 DOI: 10.3390/antib8010003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/21/2018] [Accepted: 12/22/2018] [Indexed: 12/11/2022] Open
Abstract
The rapid advancement in the development of therapeutic proteins, including monoclonal antibodies (mAbs) and antibody-drug conjugates (ADCs), has created a novel mechanism to selectively deliver highly potent cytotoxic agents in the treatment of cancer. These agents provide numerous benefits compared to traditional small molecule drugs, though their clinical use still requires optimization. The pharmacology of mAbs/ADCs is complex and because ADCs are comprised of multiple components, individual agent characteristics and patient variables can affect their disposition. To further improve the clinical use and rational development of these agents, it is imperative to comprehend the complex mechanisms employed by antibody-based agents in traversing numerous biological barriers and how agent/patient factors affect tumor delivery, toxicities, efficacy, and ultimately, biodistribution. This review provides an updated summary of factors known to affect the disposition of mAbs/ADCs in development and in clinical use, as well as how these factors should be considered in the selection and design of preclinical studies of ADC agents in development.
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Affiliation(s)
- Andrew T Lucas
- University of North Carolina (UNC), Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Ryan Robinson
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Allison N Schorzman
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Joseph A Piscitelli
- University of North Carolina (UNC), Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
| | - Juan F Razo
- University of North Carolina (UNC), Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
| | - William C Zamboni
- University of North Carolina (UNC), Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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9
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Milenic DE, Kim YS, Baidoo KE, Wong KJ, Barkley R, Delgado J, Brechbiel MW. Exploration of a F(ab') 2 Fragment as the Targeting Agent of α-Radiation Therapy: A Comparison of the Therapeutic Benefit of Intraperitoneal and Intravenous Administered Radioimmunotherapy. Cancer Biother Radiopharm 2018; 33:182-193. [PMID: 29916748 DOI: 10.1089/cbr.2018.2434] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Refinement of treatment regimens enlisting targeted α-radiation therapy (TAT) is an ongoing effort. Among the variables to consider are the target molecule, radionuclide, dosage, and administration route. The panitumumab F(ab')2 fragment targeting epidermal growth factor receptor tolerated modification with the TCMC chelate as well as radiolabeling with 203Pb or 212Pb. Good specific activity was attained when the immunoconjugate was labeled with 212Pb (9.6 ± 1.4 mCi/mg). Targeting of LS-174T tumor xenografts with the 203Pb-panitumumab F(ab')2 demonstrated comparable amounts of uptake to the similarly radiolabeled panitumumab IgG. A dose escalation study was performed to determine an effective working dose for both intraperitoneal (i.p.) and intravenous (i.v.) injections of 212Pb-panitumumab F(ab')2. Therapeutic efficacy, with modest toxicity, was observed with 30 μCi given i.p. Results for the i.v. administration were not as definitive and the experiment was repeated with a higher dose range. From this study, 20 μCi given i.v. was selected as the effective working dose. A subsequent therapy study combined gemcitabine or paclitaxel with i.v. 212Pb-panitumumab F(ab')2, which increased the median survival (MS) of LS-174T tumor-bearing mice to 208 and 239 d, respectively. Meanwhile, the MS of mice treated with i.v. 212Pb-panitumumab F(ab')2 alone was 61 and 11 d for the untreated group of mice. In conclusion, the panitumumab F(ab')2 fragment whether given by i.p. or i.v. injection, is a viable candidate as a delivery vector for TAT of disseminated i.p. disease.
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Affiliation(s)
- Diane E Milenic
- 1 Radioimmune and Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
| | - Young-Seung Kim
- 1 Radioimmune and Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
| | - Kwamena E Baidoo
- 1 Radioimmune and Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
| | - Karen J Wong
- 2 Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
| | - Rachel Barkley
- 1 Radioimmune and Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
| | - Jose Delgado
- 1 Radioimmune and Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
| | - Martin W Brechbiel
- 1 Radioimmune and Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
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10
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deSouza NM, Tempany CM. A risk-based approach to identifying oligometastatic disease on imaging. Int J Cancer 2018; 144:422-430. [PMID: 30098215 PMCID: PMC6492106 DOI: 10.1002/ijc.31793] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/27/2018] [Accepted: 07/31/2018] [Indexed: 12/14/2022]
Abstract
Recognition of <3 metastases in <2 organs, particularly in cancers with a known predisposition to oligometastatic disease (OMD) (colorectal, prostate, renal, sarcoma and lung), offers the opportunity to focally treat the lesions identified and confers a survival advantage. The reliability with which OMD is identified depends on the sensitivity of the imaging technique used for detection and may be predicted from phenotypic and genetic factors of the primary tumour, which determine metastatic risk. Whole‐body or organ‐specific imaging to identify oligometastases requires optimization to achieve maximal sensitivity. Metastatic lesions at multiple locations may require a variety of imaging modalities for best visualisation because the optimal image contrast is determined by tumour biology. Newer imaging techniques used for this purpose require validation. Additionally, rationalisation of imaging strategies is needed, particularly with regard to timing of imaging and follow‐up studies. This article reviews the current evidence for the use of imaging for recognising OMD and proposes a risk‐based roadmap for identifying patients with true OMD, or at risk of metastatic disease likely to be OM.
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Affiliation(s)
- Nandita M deSouza
- Cancer Research UK Imaging Centre at The Institute of Cancer Research and The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom
| | - Clare M Tempany
- Department of Radiology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA
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11
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Kurdziel KA, Mena E, McKinney Y, Wong K, Adler S, Sissung T, Lee J, Lipkowitz S, Lindenberg L, Turkbey B, Kummar S, Milenic DE, Doroshow JH, Figg WD, Merino MJ, Paik CH, Brechbiel MW, Choyke PL. First-in-human phase 0 study of 111In-CHX-A"-DTPA trastuzumab for HER2 tumor imaging. ACTA ACUST UNITED AC 2018; 5. [PMID: 30906574 PMCID: PMC6425962 DOI: 10.15761/jts.1000269] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Introduction: Tumors over-expressing the human epithelial receptor 2 (HER2) or exhibiting amplification or mutation of its proto-oncogene have a poorer prognosis. Using trastuzumab and/or other HER2 targeted therapies can increase overall survival in patients with HER2(+) tumors making it critical to accurately identify patients who may benefit. We report on a Phase 0 study of the imaging agent, 111In-CHX-A”-DTPA trastuzumab, in patients with known HER2 status to evaluate its safety and biodistribution and to obtain preliminary data regarding its ability to provide an accurate, whole-body, non-invasive means to determine HER2 status. Methods: 111In-CHX-A”-DTPA trastuzumab was radiolabeled on-site and slowly infused into 11 patients who underwent single (n=5) or multiple (n=6) ɣ-camera (n=6) and/or SPECT (n=8) imaging sessions. Results: No safety issues were identified. Visual and semi-quantitative imaging data were concordant with tissue HER2 expression profiling in all but 1 patient. The biodistribution showed intense peak liver activity at the initial imaging timepoint (3.3h) and a single-phase clearance fit of the average time-activity curve (TAC) estimated t1/2=46.9h (R2=0.97; 95%CI 41.8 to 53h). This was followed by high gastrointestinal (GI) tract activity peaking by 52h. Linear regression predicted GI clearance by 201.2h (R2 =0.96; 95%CI 188.5 to 216.9h). Blood pool had lower activity with its maximum on the initial images. Non-linear regression fit projected a t1/2=34.2h (R2 =0.96; 95%CI 25.3 to 46.3h). Assuming linear whole-body clearance, linear regression projected complete elimination (x-intercept) at 256.5hr (R2=0.96; 95%CI 186.1 to 489.2h). Conclusion: 111In-CHX-A”-DTPA trastuzumab can be safely imaged in humans. The biodistribution allowed for visual and semiquantitative analysis with results concordant with tissue expression profiling in 10 of 11 patients. Advances in Knowledge and Implications for Patient Care Using readily available components and on-site radiolabeling 111In-CHX-A”-DTPA trastuzumab SPECT imaging may provide an economical, non-invasive means to detect HER2 over-expression.
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Affiliation(s)
- K A Kurdziel
- Molecular Imaging Program (MIP), Center for Cancer Research (CCR)/National Cancer Institute (NCI), National Institutes of Health (NIH), USA
| | - E Mena
- Molecular Imaging Program (MIP), Center for Cancer Research (CCR)/National Cancer Institute (NCI), National Institutes of Health (NIH), USA
| | - Y McKinney
- Molecular Imaging Program (MIP), Center for Cancer Research (CCR)/National Cancer Institute (NCI), National Institutes of Health (NIH), USA
| | - K Wong
- Molecular Imaging Program (MIP), Center for Cancer Research (CCR)/National Cancer Institute (NCI), National Institutes of Health (NIH), USA
| | - S Adler
- Clinical Research Directorate/Clinical Monitoring Research Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, USA
| | - T Sissung
- Genitourinary Malignancies Branch, CCR/NCI, NIH, USA
| | - J Lee
- Division of Nuclear Medicine, Radiology and Imaging Sciences, Clinical Center(CC), NIH, USA
| | - S Lipkowitz
- Women's Malignancies Branch, CCR/NCI, NIH, USA
| | - L Lindenberg
- Molecular Imaging Program (MIP), Center for Cancer Research (CCR)/National Cancer Institute (NCI), National Institutes of Health (NIH), USA
| | - B Turkbey
- Molecular Imaging Program (MIP), Center for Cancer Research (CCR)/National Cancer Institute (NCI), National Institutes of Health (NIH), USA
| | - S Kummar
- Women's Malignancies Branch, CCR/NCI, NIH, USA
| | - D E Milenic
- Radiation Oncology Branch, CCR/NCI, NIH, USA
| | - J H Doroshow
- Division of Cancer Treatment and Diagnosis and CCR/NCI, NIH, USA
| | - W D Figg
- Genitourinary Malignancies Branch, CCR/NCI, NIH, USA
| | - M J Merino
- Laboratory of Pathology, CCR/NCI, NIH, USA
| | - C H Paik
- Division of Nuclear Medicine, Radiology and Imaging Sciences, Clinical Center(CC), NIH, USA
| | | | - P L Choyke
- Molecular Imaging Program (MIP), Center for Cancer Research (CCR)/National Cancer Institute (NCI), National Institutes of Health (NIH), USA
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12
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Deshayes E, Ladjohounlou R, Le Fur P, Pichard A, Lozza C, Boudousq V, Sevestre S, Jarlier M, Kashani R, Koch J, Sosabowski J, Foster J, Chouin N, Bruchertseifer F, Morgenstern A, Kotzki PO, Navarro-Teulon I, Pouget JP. Radiolabeled Antibodies Against Müllerian-Inhibiting Substance Receptor, Type II: New Tools for a Theranostic Approach in Ovarian Cancer. J Nucl Med 2018; 59:1234-1242. [DOI: 10.2967/jnumed.118.208611] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 02/27/2018] [Indexed: 12/16/2022] Open
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13
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Lucas AT, Price LSL, Schorzman AN, Storrie M, Piscitelli JA, Razo J, Zamboni WC. Factors Affecting the Pharmacology of Antibody-Drug Conjugates. Antibodies (Basel) 2018; 7:antib7010010. [PMID: 31544862 PMCID: PMC6698819 DOI: 10.3390/antib7010010] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 12/12/2022] Open
Abstract
Major advances in therapeutic proteins, including antibody–drug conjugates (ADCs), have created revolutionary drug delivery systems in cancer over the past decade. While these immunoconjugate agents provide several advantages compared to their small-molecule counterparts, their clinical use is still in its infancy. The considerations in their development and clinical use are complex, and consist of multiple components and variables that can affect the pharmacologic characteristics. It is critical to understand the mechanisms employed by ADCs in navigating biological barriers and how these factors affect their biodistribution, delivery to tumors, efficacy, and toxicity. Thus, future studies are warranted to better understand the complex pharmacology and interaction between ADC carriers and biological systems, such as the mononuclear phagocyte system (MPS) and tumor microenvironment. This review provides an overview of factors that affect the pharmacologic profiles of ADC therapies that are currently in clinical use and development.
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Affiliation(s)
- Andrew T Lucas
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Lauren S L Price
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Allison N Schorzman
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Mallory Storrie
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
| | | | - Juan Razo
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
| | - William C Zamboni
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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14
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Milenic DE, Baidoo KE, Kim YS, Barkley R, Brechbiel MW. Comparative studies on the therapeutic benefit of targeted α-particle radiation therapy for the treatment of disseminated intraperitoneal disease. Dalton Trans 2017; 46:14591-14601. [PMID: 28675216 PMCID: PMC5664163 DOI: 10.1039/c7dt01819c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Identification of the appropriate combination of radionuclide, target and targeting vehicle is critical for successful radioimmunotherapy. For the treatment of disseminated peritoneal diseases such as pancreatic or ovarian cancer, α-emitting radionuclides have been proposed for targeted radiation therapy. This laboratory has taken a systematic approach investigating targeted α-radiation therapy, allowing comparisons to now be made between 211At, 227Th, 213Bi and 212Pb. Herein, trastuzumab radiolabeled with 211At and 227Th was evaluated for therapeutic efficacy in the LS-174T i.p. tumor model. A dose escalation study was conducted with each radioimmunoconjugate (RIC). Therapeutic benefit was realized with 211At-trastuzumab with doses of 20, 30 and 40 μCi. At doses >40 μCi, toxicity was observed with greater weight loss and 2-fold higher decrease in the platelet counts. Following a second study comparing the effect of 20, 30 and 40 μCi of 211At-trastuzumab, 30 μCi was selected as the dose for future studies. A parallel study was performed evaluating 0.25, 0.5, 1.0, 2.0 and 5.0 μCi of 227Th-trastuzumab. The 0.5 and 1.0 μCi injected dose resulted in a therapeutic response; a lower degree of weight loss was experienced by the mice in the 0.5 μCi cohort. When the data is normalized for comparing 211At, 227Th, 213Bi and 212Pb, the choice of radionuclide for RIT is perhaps not entirely based on simple therapeutic efficacy, other factors may play a role in choosing the "right" radionuclide.
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Affiliation(s)
- Diane E Milenic
- Radioimmune & Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda MD, USA.
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15
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Emerging Role of the Spleen in the Pharmacokinetics of Monoclonal Antibodies, Nanoparticles and Exosomes. Int J Mol Sci 2017; 18:ijms18061249. [PMID: 28604595 PMCID: PMC5486072 DOI: 10.3390/ijms18061249] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 06/02/2017] [Accepted: 06/06/2017] [Indexed: 01/19/2023] Open
Abstract
After being absorbed, drugs distribute in the body in part to reach target tissues, in part to be disposed in tissues where they do not exert clinically-relevant effects. Therapeutically-relevant effects are usually terminated by drug metabolism and/or elimination. The role that has been traditionally ascribed to the spleen in these fundamental pharmacokinetic processes was definitely marginal. However, due to its high blood flow and to the characteristics of its microcirculation, this organ would be expected to be significantly exposed to large, new generation drugs that can hardly penetrate in other tissues with tight endothelial barriers. In the present review, we examine the involvement of the spleen in the disposition of monoclonal antibodies, nanoparticles and exosomes and the possible implications for their therapeutic efficacy and toxicity. The data that we will review lead to the conclusion that a new role is emerging for the spleen in the pharmacokinetics of new generation drugs, hence suggesting that this small, neglected organ will certainly deserve stronger attention by pharmacologists in the future.
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16
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Targeted α-Particle Radiation Therapy of HER1-Positive Disseminated Intraperitoneal Disease: An Investigation of the Human Anti-EGFR Monoclonal Antibody, Panitumumab. Transl Oncol 2017; 10:535-545. [PMID: 28577439 PMCID: PMC5458064 DOI: 10.1016/j.tranon.2017.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/13/2017] [Accepted: 04/17/2017] [Indexed: 11/29/2022] Open
Abstract
Identifying molecular targets and an appropriate targeting vehicle, i.e., monoclonal antibodies (mAb) and their various forms, for radioimmunotherapy (RIT) remains an active area of research. Panitumumab, a fully human and less immunogenic mAb that binds to the epidermal growth factor receptor (Erb1; HER1), was evaluated for targeted α-particle radiation therapy using 212Pb, an in vivo α generator. A single dose of 212Pb-panitumumab administered to athymic mice bearing LS-174T intraperitoneal (i.p.) tumor xenografts was found to have greater therapeutic efficacy when directly compared with 212Pb-trastuzumab, which binds to HER2. A dose escalation study determined a maximum effective working dose of 212Pb-panitumumab to be 20 μCi with a median survival of 35 days versus 25 days for the untreated controls. Pretreatment of tumor-bearing mice with paclitaxel and gemcitabine 24 hours prior to injection of 212Pb-pantiumumab at 10 or 20 μCi resulted in the greatest enhanced therapeutic response at the higher dose with median survivals of 106 versus 192 days, respectively. The greatest therapeutic impact, however, was observed in the animals that were treated with topotecan 24 hours prior to RIT and then again 24 hours after RIT; the best response from this combination was also obtained with the lower 10-μCi dose of 212Pb-panitumumab (median survival >280 days). In summary, 212Pb-panitumumab is an excellent candidate for the treatment of HER1-positive disseminated i.p. disease. Furthermore, the potentiation of the therapeutic impact of 212Pb-pantiumumab by chemotherapeutics confirms and validates the importance of developing a multimodal therapy regimen.
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17
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Janjigian YY, Braghiroli MI. Current Progress in Human Epidermal Growth Factor Receptor 2 Targeted Therapies in Esophagogastric Cancer. Surg Oncol Clin N Am 2017; 26:313-324. [PMID: 28279471 DOI: 10.1016/j.soc.2016.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Esophagogastric cancer is a worldwide health problem. The addition of the epidermal growth factor receptor 2 (HER2)-directed antibody trastuzumab to chemotherapy increased the overall survival of patients with metastatic HER2-positive esophagogastric cancer. This article discusses the available data to support HER2 as validated biomarker and recently completed and ongoing clinical trials of HER2-directed agents in metastatic and localized disease. Also reviewed is the mechanisms of resistance for HER2-directed therapy and ongoing research strategies including new imaging techniques and studies with patient-derived xenografts.
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Affiliation(s)
- Yelena Y Janjigian
- Gastrointestinal Oncology Service, Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College, 300 East 66th Street, Room 1033, New York, NY 10065, USA
| | - Maria Ignez Braghiroli
- Gastrointestinal Oncology Service, Memorial Sloan Kettering Cancer Center, 300 East 66th Street, Room 1033, New York, NY 10065, USA.
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18
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Moreau M, Poty S, Vrigneaud JM, Walker P, Guillemin M, Raguin O, Oudot A, Bernhard C, Goze C, Boschetti F, Collin B, Brunotte F, Denat F. MANOTA: a promising bifunctional chelating agent for copper-64 immunoPET. Dalton Trans 2017; 46:14659-14668. [DOI: 10.1039/c7dt01772c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comparison of four bifunctional chelating agents showed superior behaviour of a new NOTA derivative for 64Cu labelling of antibody fragments.
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19
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de Geus SWL, Boogerd LSF, Swijnenburg RJ, Mieog JSD, Tummers WSFJ, Prevoo HAJM, Sier CFM, Morreau H, Bonsing BA, van de Velde CJH, Vahrmeijer AL, Kuppen PJK. Selecting Tumor-Specific Molecular Targets in Pancreatic Adenocarcinoma: Paving the Way for Image-Guided Pancreatic Surgery. Mol Imaging Biol 2016; 18:807-819. [PMID: 27130234 PMCID: PMC5093212 DOI: 10.1007/s11307-016-0959-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE The purpose of this study was to identify suitable molecular targets for tumor-specific imaging of pancreatic adenocarcinoma. PROCEDURES The expression of eight potential imaging targets was assessed by the target selection criteria (TASC)-score and immunohistochemical analysis in normal pancreatic tissue (n = 9), pancreatic (n = 137), and periampullary (n = 28) adenocarcinoma. RESULTS Integrin αvβ6, carcinoembryonic antigen (CEA), epithelial growth factor receptor (EGFR), and urokinase plasminogen activator receptor (uPAR) showed a significantly higher (all p < 0.001) expression in pancreatic adenocarcinoma compared to normal pancreatic tissue and were confirmed by the TASC score as promising imaging targets. Furthermore, these biomarkers were expressed in respectively 88 %, 71 %, 69 %, and 67 % of the pancreatic adenocarcinoma patients. CONCLUSIONS The results of this study show that integrin αvβ6, CEA, EGFR, and uPAR are suitable targets for tumor-specific imaging of pancreatic adenocarcinoma.
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Affiliation(s)
- Susanna W L de Geus
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Leonora S F Boogerd
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Rutger-Jan Swijnenburg
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - J Sven D Mieog
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Willemieke S F J Tummers
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Hendrica A J M Prevoo
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Cornelis F M Sier
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Hans Morreau
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Bert A Bonsing
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Cornelis J H van de Velde
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Alexander L Vahrmeijer
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands
| | - Peter J K Kuppen
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands.
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20
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Ricci JW, Lovato DM, Severns V, Sklar LA, Larson RS. Novel ABCG2 Antagonists Reverse Topotecan-Mediated Chemotherapeutic Resistance in Ovarian Carcinoma Xenografts. Mol Cancer Ther 2016; 15:2853-2862. [PMID: 27671528 DOI: 10.1158/1535-7163.mct-15-0789] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 08/17/2016] [Accepted: 09/14/2016] [Indexed: 11/16/2022]
Abstract
Chemotherapeutic resistance remains a challenge in the treatment of ovarian carcinoma, especially in recurrent disease. Despite the fact that most patients with newly diagnosed tumors attain complete remission following cytoreductive surgery and chemotherapy, ovarian carcinoma has a recurrence rate that exceeds 75%. The ATP-binding cassette family G member 2 (ABCG2) efflux protein has been described as one mechanism that confers multiple-drug resistance to solid tumors and contributes to topotecan resistance in ovarian carcinoma. In fact, one clinical trial demonstrated ABCG2 expression in all patients with primary or recurrent ovarian carcinoma. On the basis of our previous work, we hypothesized that three compounds (CID44640177, CID1434724, and CID46245505), which represent a new piperazine-substituted pyrazolo[1,5]pyrimidine substructure class of ABCG2-specific antagonists, would restore chemosensitivity to drug-resistant ovarian cancer in vitro and in vivo To address the treatment difficulties associated with chemotherapeutic resistance in ovarian cancer, we combined each compound (CID44640177, CID1434724, and CID46245505) with topotecan and administered the mixture to chemoresistant Igrov1/T8 ovarian cancer cells in vitro and Igrov1/T8 xenografts in CB-17 SCID mice. We found that only nanomolar concentrations of each ABCG2 inhibitor in combination with topotecan were required to restore chemosensitivity to Igrov1/T8 cells in vitro In vivo, substantial tumor reduction was achieved with each compound in 4 days, with CID1434724 causing the largest reduction in excess of 60%. No signs of secondary toxic effects were observed with the ABCG2 antagonists. These novel compounds should be viewed as promising drug candidates to reverse ABCG2-mediated chemoresistance. Mol Cancer Ther; 15(12); 2853-62. ©2016 AACR.
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Affiliation(s)
- Jerec W Ricci
- Clinical and Translational Science Center, University of New Mexico, Albuquerque, New Mexico
| | - Debbie M Lovato
- Clinical and Translational Science Center, University of New Mexico, Albuquerque, New Mexico
| | - Virginia Severns
- Clinical and Translational Science Center, University of New Mexico, Albuquerque, New Mexico
| | - Larry A Sklar
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico
| | - Richard S Larson
- Clinical and Translational Science Center, University of New Mexico, Albuquerque, New Mexico.
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A comparative evaluation of the chelators H4octapa and CHX-A″-DTPA with the therapeutic radiometal (90)Y. Nucl Med Biol 2016; 43:566-576. [PMID: 27419360 DOI: 10.1016/j.nucmedbio.2016.06.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 05/24/2016] [Accepted: 06/24/2016] [Indexed: 01/16/2023]
Abstract
OBJECTIVES To compare the radiolabeling performance, stability, and practical efficacy of the chelators CHX-A″-DTPA and H4octapa with the therapeutic radiometal (90)Y. METHODS The bifunctional chelators p-SCN-Bn-H4octapa and p-SCN-Bn-CHX-A″-DTPA were conjugated to the HER2-targeting antibody trastuzumab. The resulting immunoconjugates were radiolabeled with (90)Y to compare radiolabeling efficiency, in vitro and in vivo stability, and in vivo performance in a murine model of ovarian cancer. RESULTS High radiochemical yields (>95%) were obtained with (90)Y-CHX-A″-DTPA-trastuzumab and (90)Y-octapa-trastuzumab after 15min at room temperature. Both (90)Y-CHX-A″-DTPA-trastuzumab and (90)Y-octapa-trastuzumab exhibited excellent in vitro and in vivo stability. Furthermore, the radioimmunoconjugates displayed high tumoral uptake values (42.3±4.0%ID/g for (90)Y-CHX-A″-DTPA-trastuzumab and 30.1±7.4%ID/g for (90)Y-octapa-trastuzumab at 72h post-injection) in mice bearing HER2-expressing SKOV3 ovarian cancer xenografts. Finally, (90)Y radioimmunotherapy studies performed in tumor-bearing mice demonstrated that (90)Y-CHX-A″-DTPA-trastuzumab and (90)Y-octapa-trastuzumab are equally effective therapeutic agents, as treatment with both radioimmunoconjugates yielded substantially decreased tumor growth compared to controls. CONCLUSIONS Ultimately, this work demonstrates that the acyclic chelators CHX-A″-DTPA and H4octapa have comparable radiolabeling, stability, and in vivo performance, making them both suitable choices for applications requiring (90)Y.
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Abedi SM, Mardanshahi A, Shahhosseini R, Hosseinimehr SJ. Nuclear medicine for imaging of epithelial ovarian cancer. Future Oncol 2016; 12:1165-77. [PMID: 26984362 DOI: 10.2217/fon.16.19] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cancer is one of the leading causes of mortality worldwide. Usually, the diagnosis of cancer at an early stage is important to facilitate proper treatment and survival. Nuclear medicine has been successfully used in the diagnosis, staging, therapy and monitoring of cancers. Single-photon emission computed tomography and PET-based companion imaging agents are in development for use as a companion diagnostic tool for patients with ovarian cancer. The present review discusses the basic and clinical studies related to the use of radiopharmaceuticals in the diagnosis and management of ovarian cancer, focusing on their utility and comparing them with other imaging techniques such as computed tomography and MRI.
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Affiliation(s)
- Seyed Mohammad Abedi
- Department of Radiology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Alireza Mardanshahi
- Department of Radiology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Roza Shahhosseini
- Department of Obstetrics & Gynecology, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Seyed Jalal Hosseinimehr
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.,Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
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Li X, Zhao H, Gu J, Zheng L. Prognostic role of HER2 amplification based on fluorescence in situ hybridization (FISH) in pancreatic ductal adenocarcinoma (PDAC): a meta-analysis. World J Surg Oncol 2016; 14:38. [PMID: 26897036 PMCID: PMC4761213 DOI: 10.1186/s12957-016-0792-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 02/16/2016] [Indexed: 12/18/2022] Open
Abstract
Background Previous studies have shown that human epidermal growth factor receptor 2 (HER2) may play an important role in the invasion and metastasis of pancreatic cancer, but the relationship between HER2 amplification level and prognosis of pancreatic cancer patients is still controversial. Therefore, we performed a meta-analysis to determine the prognostic significance of HER2 amplification based on fluorescence in situ hybridization (FISH) in patients with pancreatic cancer. Methods PubMed, EMBASE, and Web of Science (Jan 2001 to Jun 2015) were searched. Only articles that detect the HER2 amplification by FISH method were included. RevMan 5.3 and STATA version 12 were used to perform this meta-analysis. Pooled calculations were carried out on hazard ratio (HR) and 95 % confidence interval (CI) to assess the risk of disease. Results A total of six eligible studies were enrolled in meta-analysis. The univariate analysis results showed that HER2 amplification was not significantly associated with patients’ overall survival (pooled HR, 1.87, 95 % CI, 0.64–5.46, P = 0.25), which are maintained in one study of multivariate analysis (HR 0.51, 95 % CI, 0.12–2.14, P = 0.358). HER2 amplification also had no correlation with clinicopathological factors such as age, gender, lymph node metastasis, and tumor stage. Conclusions Our results showed that HER2 amplification based on FISH may not be a good prognostic factor for survival in patients with pancreatic cancer.
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Affiliation(s)
- Xiaoping Li
- Department of Oncology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China.
| | - Hua Zhao
- Department of Oncology, Baoshan People Hospital, Yunnan, 678000, China
| | - Jianchun Gu
- Department of Oncology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Leizhen Zheng
- Department of Oncology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
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Derrien A, Gouard S, Maurel C, Gaugler MH, Bruchertseifer F, Morgenstern A, Faivre-Chauvet A, Classe JM, Chérel M. Therapeutic Efficacy of Alpha-RIT Using a (213)Bi-Anti-hCD138 Antibody in a Mouse Model of Ovarian Peritoneal Carcinomatosis. Front Med (Lausanne) 2015; 2:88. [PMID: 26734610 PMCID: PMC4685172 DOI: 10.3389/fmed.2015.00088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 11/30/2015] [Indexed: 01/09/2023] Open
Abstract
Purpose Ovarian peritoneal carcinomatosis is a pathology for which effective cures are currently lacking. New research protocols seek to eradicate residual micrometastases following cytoreductive surgery by using hyperthermic intraperitoneal chemotherapy (HIPEC) or radioimmunotherapy (RIT). This study aims to first develop alpha-RIT using an anti-CD138 mAb radiolabeled with an alpha-emitter, bismuth-213 (213Bi-B-B4) and HIPEC in a nude mouse model and second to compare and combine these techniques. Material and methods A murine model of postoperative ovarian peritoneal carcinomatosis was established. A pilot group of six mice received an intraperitoneal injection of luciferase-tagged SHIN-3 cells and bioluminescence was measured every day. Cytoreductive surgery was performed at day 14 (n = 4) and 29 (n = 2). Because the residual bioluminescence signal measured after surgery was equivalent to that obtained 3 days after the graft, HIPEC or alpha-RIT treatments were applied 3 days after the graft. Ten mice were treated by HIPEC with cisplatine (37.5 mg/mL), 11 with 7.4 MBq of 213Bi-B-B4, seven with 11.1 MBq of 213Bi-B-B4, and 10 mice were treated with the combined therapy (HIPEC + 7.4 MBq of 213Bi-B-B4). Eleven mice received no treatment. Bioluminescence imaging and survival were assessed. Results Alpha-RIT 7.4 MBq and 11.1 MBq significantly improved survival (p = 0.0303 and p = 0.0070, respectively), whereas HIPEC and HIPEC + alpha-RIT treatments did not significantly ameliorate survival as compared to the control group. Conclusion Survival was significantly increased by alpha-RIT treatment in mice with peritoneal carcinomatosis of ovarian origin; however, HIPEC alone or in combination with alpha-RIT had no significant effect.
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Affiliation(s)
- Aurélie Derrien
- Centre Régional de Recherche en Cancérologie Nantes/Angers (CRCNA) UMR892 INSERM, Nantes, France; 6299 CNRS, Nantes, France; Université de Nantes, Nantes, France; Service de Gynécologie-Obstétrique, CHU de Poitiers, Poitiers, France
| | - Sébastien Gouard
- Centre Régional de Recherche en Cancérologie Nantes/Angers (CRCNA) UMR892 INSERM, Nantes, France; 6299 CNRS, Nantes, France; Université de Nantes, Nantes, France
| | - Catherine Maurel
- Centre Régional de Recherche en Cancérologie Nantes/Angers (CRCNA) UMR892 INSERM, Nantes, France; 6299 CNRS, Nantes, France; Université de Nantes, Nantes, France
| | - Marie-Hélène Gaugler
- Centre Régional de Recherche en Cancérologie Nantes/Angers (CRCNA) UMR892 INSERM, Nantes, France; 6299 CNRS, Nantes, France; Université de Nantes, Nantes, France
| | - Frank Bruchertseifer
- Institute for Transuranium Elements, European Commission Joint Research Centre , Karlsruhe , Germany
| | - Alfred Morgenstern
- Institute for Transuranium Elements, European Commission Joint Research Centre , Karlsruhe , Germany
| | - Alain Faivre-Chauvet
- Centre Régional de Recherche en Cancérologie Nantes/Angers (CRCNA) UMR892 INSERM, Nantes, France; 6299 CNRS, Nantes, France; Université de Nantes, Nantes, France; Service de Médecine Nucléaire, CHU de Nantes, Nantes, France
| | - Jean-Marc Classe
- Centre Régional de Recherche en Cancérologie Nantes/Angers (CRCNA) UMR892 INSERM, Nantes, France; 6299 CNRS, Nantes, France; Université de Nantes, Nantes, France; Service de Chirurgie Oncologique, Institut de Cancérologie de l'Ouest, Saint-Herblain, France
| | - Michel Chérel
- Centre Régional de Recherche en Cancérologie Nantes/Angers (CRCNA) UMR892 INSERM, Nantes, France; 6299 CNRS, Nantes, France; Université de Nantes, Nantes, France; Service de Médecine Nucléaire, Institut de Cancérologie de l'Ouest, Saint-Herblain, France
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Maeda A, Bu J, Chen J, Zheng G, DaCosta RS. Dual in vivo photoacoustic and fluorescence imaging of HER2 expression in breast tumors for diagnosis, margin assessment, and surgical guidance. Mol Imaging 2015; 13. [PMID: 25430722 DOI: 10.2310/7290.2014.00043] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Biomarker-specific imaging probes offer ways to improve molecular diagnosis, intraoperative margin assessment, and tumor resection. Fluorescence and photoacoustic imaging probes are of particular interest for clinical applications because the combination enables deeper tissue penetration for tumor detection while maintaining imaging sensitivity compared to a single optical imaging modality. Here we describe the development of a human epidermal growth factor receptor 2 (HER2)-targeting imaging probe to visualize differential levels of HER2 expression in a breast cancer model. Specifically, we labeled trastuzumab with Black Hole Quencher 3 (BHQ3) and fluorescein for photoacoustic and fluorescence imaging of HER2 overexpression, respectively. The dual-labeled trastuzumab was tested for its ability to detect HER2 overexpression in vitro and in vivo. We demonstrated an over twofold increase in the signal intensity for HER2-overexpressing tumors in vivo, compared to low-HER2-expressing tumors, using photoacoustic imaging. Furthermore, we demonstrated the feasibility of detecting tumors and positive surgical margins by fluorescence imaging. These results suggest that multimodal HER2-specific imaging of breast cancer using the BHQ3-fluorescein trastuzumab enables molecular-level detection and surgical margin assessment of breast tumors in vivo. This technique may have future clinical impact for primary lesion detection, as well as intraoperative molecular-level surgical guidance in breast cancer.
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Milenic DE, Baidoo KE, Kim YS, Brechbiel MW. Evaluation of cetuximab as a candidate for targeted α-particle radiation therapy of HER1-positive disseminated intraperitoneal disease. MAbs 2015; 7:255-64. [PMID: 25587678 DOI: 10.4161/19420862.2014.985160] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Although the epidermal growth factor receptor (EGFR), also known as HER1, has been studied for over a decade, it continues to be a molecule of great interest and focus of investigators for development of targeted therapies. The marketed monoclonal antibody cetuximab binds to HER1, and thus might serve as the basis for creation of imaging or therapies that target this receptor. The potential of cetuximab as a vehicle for the delivery of α-particle radiation was investigated in an intraperitoneal tumor mouse model. The effective working dose of 10 μCi of (212)Pb-cetuximab was determined from a dose (10-50 μCi) escalation study. Toxicity, as indicated by the lack of animal weight loss, was not evident at the 10 μCi dose of (212)Pb-cetuximab. A subsequent study demonstrated (212)Pb-cetuximab had a therapeutic efficacy similar to that of (212)Pb-trastuzumab (p = 0.588). Gemcitabine given 24 h prior to (212)Pb-cetuximab increased the median survival from 174 d to 283 d, but carboplatin suppressed the effectiveness of (212)Pb-cetuximab. Notably, concurrent treatment of tumor-bearing mice with (212)Pb-labeled cetuximab and trastuzumab provided therapeutic benefit that was greater than either antibody alone. In conclusion, cetuximab proved to be an effective vehicle for targeting HER1-expressing tumors with α-radiation for the treatment of disseminated intraperitoneal disease. These studies provide further evidence that the multimodality therapy regimens may have greater efficacy and benefit in the treatment of cancer patients.
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Key Words
- %ID/g, percent injected dose per gram
- 212Pb
- BSA, bovine serum albumin
- EGFR, epidermal growth factor receptor
- HER1
- HulgG, human immunoglobulin
- MS, median survival
- PBS, phosphate-buffered saline
- PET, positron emission tomography
- RIT, radioimmunotherapy
- TCMC, 1,4,7,10-tetraaza-1,4,7,10-tetra-(2-carbamoyl methyl)-cyclododecane
- cetuximab
- i.p., intraperitoneal
- mAb, monoclonal antibody
- radioimmunotherapy
- s.c, subcutaneous
- α-particle
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Affiliation(s)
- Diane E Milenic
- a Radioimmune & Inorganic Chemistry Section; Radiation Oncology Branch; Center for Cancer Research; National Cancer Institute; National Institutes of Health ; Bethesda MD USA
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Suzuki T, Miyazaki C, Ishii-Watabe A, Tada M, Sakai-Kato K, Kawanishi T, Kawasaki N. A fluorescent imaging method for analyzing the biodistribution of therapeutic monoclonal antibodies that can distinguish intact antibodies from their breakdown products. MAbs 2015; 7:759-69. [PMID: 25891896 DOI: 10.1080/19420862.2015.1038683] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Many monoclonal antibodies have been developed for therapy over the last 2 decades. In the development of therapeutic antibodies, the preclinical assessment of an antibody's biodistribution is important for the prediction of the antibody's efficacy and safety. For imaging analyses of such biodistributions, radioisotope (RI) labeling and fluorescence labeling methods are typically used, but the resulting data are limited because these methods cannot distinguish breakdown products from intact antibodies. To resolve this problem, we developed a novel method using fluorescent resonance energy transfer (FRET)-type labeling and a spectral unmixing tool. With FRET-type labeling (labeling with 2 species of fluorophore), different fluorescence properties of labeled intact antibodies and their breakdown products (the hydrolyzed/digested type of breakdown products) are made visible. With the spectral unmixing tool, the fluorescence of a solution containing the intact antibody and its breakdown products could be unmixed in proportion to their contents. Moreover, when labeled antibodies that targeted either human epidermal growth factor receptor-2 or epidermal growth factor receptor were injected into nude mice implanted subcutaneously with tumor cells, the accumulation of the injected labeled antibodies and their breakdown products in the tumor could be separately analyzed by both whole-mouse imaging and a tumor homogenate analysis. These results suggest that our method using FRET-type labeling and a spectral unmixing tool could be useful in distinguishing breakdown products from intact antibodies.
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Affiliation(s)
- Takuo Suzuki
- a National Institute of Health Sciences ; Tokyo , Japan
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Pruszynski M, Koumarianou E, Vaidyanathan G, Chitneni S, Zalutsky MR. D-Amino acid peptide residualizing agents bearing N-hydroxysuccinimido- and maleimido-functional groups and their application for trastuzumab radioiodination. Nucl Med Biol 2015; 42:19-27. [PMID: 25240914 PMCID: PMC4268387 DOI: 10.1016/j.nucmedbio.2014.08.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 08/07/2014] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Proteins that undergo receptor-mediated endocytosis are subject to lysosomal degradation, requiring radioiodination methods that minimize loss of radioactivity from tumor cells after this process occurs. To accomplish this, we developed the residualizing radioiodination agent N(ϵ)-(3-[(*)I]iodobenzoyl)-Lys(5)-N(α)-maleimido-Gly(1)-D-GEEEK (Mal-D-GEEEK-[(*)I]IB), which enhanced tumor uptake but also increased kidney activity and necessitates generation of sulfhydryl moieties on the protein. The purpose of the current study was to synthesize and evaluate a new D-amino acid based agent that might avoid these potential problems. METHODS N(α)-(3-iodobenzoyl)-(5-succinimidyloxycarbonyl)-D-EEEG (NHS-IB-D-EEEG), which contains 3 D-glutamates to provide negative charge and a N-hydroxysuccinimide function to permit conjugation to unmodified proteins, and the corresponding tin precursor were produced by solid phase peptide synthesis and subsequent conjugation with appropriate reagents. Radioiodination of the anti-HER2 antibody trastuzumab using NHS-IB-D-EEEG and Mal-D-GEEEK-IB was compared. Paired-label internalization assays on BT474 breast carcinoma cells and biodistribution studies in athymic mice bearing BT474M1 xenografts were performed to evaluate the two radioiodinated D-peptide trastuzumab conjugates. RESULTS NHS-[(131)I]IB-D-EEEG was produced in 53.8%±13.4% and conjugated to trastuzumab in 39.5%±7.6% yield. Paired-label internalization assays with trastuzumab-NHS-[(131)I]IB-D-EEEG and trastuzumab-Mal-D-GEEEK-[(125)I]IB demonstrated similar intracellular trapping for both conjugates at 1h ((131)I, 84.4%±6.1%; (125)I, 88.6%±5.2%) through 24h ((131)I, 60.7%±6.8%; (125)I, 64.9%±6.9%). In the biodistribution experiment, tumor uptake peaked at 48 h (trastuzumab-NHS-[(131)I]IB-D-EEEG, 29.8%±3.6%ID/g; trastuzumab-Mal-D-GEEEK-[(125)I]IB, 45.3%±5.3%ID/g) and was significantly higher for (125)I at all time points. In general, normal tissue levels were lower for trastuzumab-NHS-[(131)I]IB-D-EEEG, with the differences being greatest in kidneys ((131)I, 2.2%±0.4%ID/g; (125)I, 16.9%±2.8%ID/g at 144 h). CONCLUSION NHS-[(131)I]IB-D-EEEG warrants further evaluation as a residualizing radioiodination agent for labeling internalizing antibodies/fragments, particularly for applications where excessive renal accumulation could be problematic.
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Affiliation(s)
- Marek Pruszynski
- Department of Radiology, Duke University Medical Center, Durham, NC, USA
| | | | | | - Satish Chitneni
- Department of Radiology, Duke University Medical Center, Durham, NC, USA
| | - Michael R Zalutsky
- Department of Radiology, Duke University Medical Center, Durham, NC, USA; Departments of Biomedical Engineering and Radiation Oncology, Duke University, Durham, NC, USA.
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Hillyar CRT, Cornelissen B, Vallis KA. Uptake, internalization and nuclear translocation of radioimmunotherapeutic agents. Ther Deliv 2014; 5:319-35. [PMID: 24592956 DOI: 10.4155/tde.14.6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2024] Open
Abstract
Radioimmunotherapy (RIT) agents that incorporate short-range particle-emitting radionuclides exploit the high linear energy transfer of α-particles and Auger electrons. Both are densely ionizing, generate complex DNA double-strand breaks and so are profoundly cytotoxic. Internalizing RIT agents enter tumor cells through receptor-mediated endocytosis and by incorporation of cell-penetrating peptides. Once internalized, some RIT agents mediate escape from endosomes and/or translocate to the nucleus. In the classical nuclear import pathway, α/β-importins recognize nuclear localization sequences in RIT agents. Translocation through nuclear pores enables RIT agents to bind to nuclear targets induced by, for example, cellular stress, growth factors or anticancer therapy, such as γH2AX or p27(KIP-1). This review discusses RIT agents designed to exploit the mechanisms underlying these complex processes and compares them with noninternalizing RIT agents.
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Affiliation(s)
- Christopher R T Hillyar
- Cancer Research UK/Medical Research Council Gray Institute for Radiation Oncology & Biology, Department of Oncology, University of Oxford, OX3 7DQ, UK
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Luis M, Tavares A, Carvalho LS, Lara-Santos L, Araújo A, Mello RAD. Personalizing therapies for gastric cancer: molecular mechanisms and novel targeted therapies. World J Gastroenterol 2013; 19:6383-97. [PMID: 24151357 PMCID: PMC3801309 DOI: 10.3748/wjg.v19.i38.6383] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 07/24/2013] [Accepted: 08/05/2013] [Indexed: 02/06/2023] Open
Abstract
Globally, gastric cancer is the 4(th) most frequently diagnosed cancer and the 2(nd) leading cause of death from cancer, with an estimated 990000 new cases and 738000 deaths registered in 2008. In the advanced setting, standard chemotherapies protocols acquired an important role since last decades in prolong survival. Moreover, recent advances in molecular therapies provided a new interesting weapon to treat advanced gastric cancer through anti-human epidermal growth factor receptor 2 (HER2) therapies. Trastuzumab, an anti-HER2 monoclonal antibody, was the first target drug in the metastatic setting that showed benefit in overall survival when in association with platinum-5-fluorouracil based chemotherapy. Further, HER2 overexpression analysis acquired a main role in predict response for trastuzumab in this field. Thus, we conducted a review that will discuss the main points concerning trastuzumab and HER2 in gastric cancer, providing a comprehensive overview of molecular mechanisms and novel trials involved.
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Jacobson O, Chen X. Interrogating tumor metabolism and tumor microenvironments using molecular positron emission tomography imaging. Theranostic approaches to improve therapeutics. Pharmacol Rev 2013; 65:1214-56. [PMID: 24064460 DOI: 10.1124/pr.113.007625] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Positron emission tomography (PET) is a noninvasive molecular imaging technology that is becoming increasingly important for the measurement of physiologic, biochemical, and pharmacological functions at cellular and molecular levels in patients with cancer. Formation, development, and aggressiveness of tumor involve a number of molecular pathways, including intrinsic tumor cell mutations and extrinsic interaction between tumor cells and the microenvironment. Currently, evaluation of these processes is mainly through biopsy, which is invasive and limited to the site of biopsy. Ongoing research on specific target molecules of the tumor and its microenvironment for PET imaging is showing great potential. To date, the use of PET for diagnosing local recurrence and metastatic sites of various cancers and evaluation of treatment response is mainly based on [(18)F]fluorodeoxyglucose ([(18)F]FDG), which measures glucose metabolism. However, [(18)F]FDG is not a target-specific PET tracer and does not give enough insight into tumor biology and/or its vulnerability to potential treatments. Hence, there is an increasing need for the development of selective biologic radiotracers that will yield specific biochemical information and allow for noninvasive molecular imaging. The possibility of cancer-associated targets for imaging will provide the opportunity to use PET for diagnosis and therapy response monitoring (theranostics) and thus personalized medicine. This article will focus on the review of non-[(18)F]FDG PET tracers for specific tumor biology processes and their preclinical and clinical applications.
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Affiliation(s)
- Orit Jacobson
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD.
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Milenic DE, Baidoo KE, Shih JH, Wong KJ, Brechbiel MW. Evaluation of platinum chemotherapy in combination with HER2-targeted α-particle radiation. Cancer Biother Radiopharm 2013; 28:441-9. [PMID: 23758610 DOI: 10.1089/cbr.2012.1423] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The studies described herein assess the potential of combining platinum-based chemotherapy with high-linear energy transfer (LET) α-particle-targeted radiation therapy using trastuzumab as the delivery vehicle. An initial study explored the combination of cisplatin with (213)Bi-trastuzumab in the LS-174T i.p. xenograft model. This initial study determined the administration sequence of cisplatin and (213)Bi-trastuzumab. Cisplatin coinjected with (213)Bi-trastuzumab increased the median survival (MS) to 90 days versus 65 days for (213)Bi-trastuzumab alone. Toxicity was observed with a weight loss of 17.6% in some of the combined treatment groups. Carboplatin proved to be better tolerated. Maximal therapeutic benefit, that is, a 5.1-fold increase in MS, was obtained in the group injected with (213)Bi-trastuzumab, followed by carboplatin 24 hours later. This was further improved by administration of multiple weekly doses of carboplatin. The MS achieved with administration of 3 doses of carboplatin was 180 days versus 60 days with (213)Bi-trastuzumab alone. The combination of carboplatin with (212)Pb radioimmunotherapy was also evaluated. The therapeutic efficacy of (212)Pb-trastuzumab (58-day MS) increased when the mice were pretreated with carboplatin 24 hours prior (157-day MS). These results again demonstrate the necessity of empirically determining the administration sequence when combining therapeutic modalities.
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Affiliation(s)
- Diane E Milenic
- Radioimmune & Inorganic Chemistry Section, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
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Schlapschy M, Binder U, Börger C, Theobald I, Wachinger K, Kisling S, Haller D, Skerra A. PASylation: a biological alternative to PEGylation for extending the plasma half-life of pharmaceutically active proteins. Protein Eng Des Sel 2013; 26:489-501. [PMID: 23754528 PMCID: PMC3715784 DOI: 10.1093/protein/gzt023] [Citation(s) in RCA: 235] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A major limitation of biopharmaceutical proteins is their fast clearance from
circulation via kidney filtration, which strongly hampers efficacy both in
animal studies and in human therapy. We have developed conformationally
disordered polypeptide chains with expanded hydrodynamic volume comprising the
small residues Pro, Ala and Ser (PAS). PAS sequences are hydrophilic, uncharged
biological polymers with biophysical properties very similar to poly-ethylene
glycol (PEG), whose chemical conjugation to drugs is an established method for
plasma half-life extension. In contrast, PAS polypeptides offer fusion to a
therapeutic protein on the genetic level, permitting Escherichia
coli production of fully active proteins and obviating in
vitro coupling or modification steps. Furthermore, they are
biodegradable, thus avoiding organ accumulation, while showing stability in
serum and lacking toxicity or immunogenicity in mice. We demonstrate that
PASylation bestows typical biologics, such as interferon, growth hormone or Fab
fragments, with considerably prolonged circulation and boosts bioactivity
in vivo.
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Affiliation(s)
- Martin Schlapschy
- Munich Center for Integrated Protein Science CIPS-M & Lehrstuhl für Biologische Chemie, Technische Universität München, Emil-Erlenmeyer-Forum 5, 85350 Freising-Weihenstephan, Germany
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212Pb-radioimmunotherapy potentiates paclitaxel-induced cell killing efficacy by perturbing the mitotic spindle checkpoint. Br J Cancer 2013; 108:2013-20. [PMID: 23632482 PMCID: PMC3670476 DOI: 10.1038/bjc.2013.189] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Paclitaxel has recently been reported by this laboratory to potentiate the high-LET radiation therapeutic (212)Pb-TCMC-trastuzumab, which targets HER2. To elucidate mechanisms associated with this therapy, targeted α-particle radiation therapeutic (212)Pb-TCMC-trastuzumab together with paclitaxel was investigated for the treatment of disseminated peritoneal cancers. METHODS Mice bearing human colon cancer LS-174T intraperitoneal xenografts were pre-treated with paclitaxel, followed by treatment with (212)Pb-TCMC-trastuzumab and compared with groups treated with paclitaxel alone, (212)Pb-TCMC-HuIgG, (212)Pb-TCMC-trastuzumab and (212)Pb-TCMC-HuIgG after paclitaxel pre-treatment. RESULTS (212)Pb-TCMC-trastuzumab with paclitaxel given 24 h earlier induced increased mitotic catastrophe and apoptosis. The combined modality of paclitaxel and (212)Pb-TCMC-trastuzumab markedly reduced DNA content in the S-phase of the cell cycle with a concomitant increase observed in the G2/M-phase. This treatment regimen also diminished phosphorylation of histone H3, accompanied by an increase in multi-micronuclei, or mitotic catastrophe in nuclear profiles and positively stained γH2AX foci. The data suggests, possible effects on the mitotic spindle checkpoint by the paclitaxel and (212)Pb-TCMC-trastuzumab treatment. Consistent with this hypothesis, (212)Pb-TCMC-trastuzumab treatment in response to paclitaxel reduced expression and phosphorylation of BubR1, which is likely attributable to disruption of a functional Aurora B, leading to impairment of the mitotic spindle checkpoint. In addition, the reduction of BubR1 expression may be mediated by the association of a repressive transcription factor, E2F4, on the promoter region of BubR1 gene. CONCLUSION These findings suggest that the sensitisation to therapy of (212)Pb-TCMC-trastuzumab by paclitaxel may be associated with perturbation of the mitotic spindle checkpoint, leading to increased mitotic catastrophe and cell death.
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Nayak TK, Bernardo M, Milenic DE, Choyke PL, Brechbiel MW. Orthotopic pleural mesothelioma in mice: SPECT/CT and MR imaging with HER1- and HER2-targeted radiolabeled antibodies. Radiology 2013; 267:173-82. [PMID: 23329660 DOI: 10.1148/radiol.12121021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
PURPOSE To evaluate the potential of anti-human epidermal growth factor receptor (HER)1- and anti-HER2-targeted radiolabeled antibodies and magnetic resonance (MR) imaging for imaging of orthotopic malignant pleural mesothelioma (MPM) in mouse models. MATERIALS AND METHODS Animal studies with 165 mice were performed in accordance with National Institutes of Health guidelines for the humane use of animals, and all procedures were approved by the institutional Animal Care and Use Committee. Flow cytometry studies were performed to evaluate HER1 and HER2 expression in NCI-H226 and MSTO-211H mesothelioma cells. Biodistribution and single photon emission computed tomography (SPECT)/computed tomography (CT) imaging studies were performed in mice (four or five per group, depending on tumor growth) bearing subcutaneous and orthotopic MPM tumors by using HER1- and HER2-targeted indium 111 ((111)In)- and iodine 125 ((125)I)-labeled panitumumab and trastuzumab, respectively. Longitudinal MR imaging over 5 weeks was performed in three mice bearing orthotopic tumors to monitor tumor growth and metastases. SPECT/CT/MR imaging studies were performed at the final time point in the orthotopic models (n = 3). The standard unpaired Student t test was used to compare groups. RESULTS Orthotopic tumors and pleural effusions were clearly visualized at MR imaging 3 weeks after tumor cell inoculation. At 2 days after injection, the mean (111)In-panitumumab uptake of 29.6% injected dose (ID) per gram ± 2.2 (standard error of the mean) was significantly greater than the (111)In-trastuzumab uptake of 13.6% ID/g ± 1.0 and the (125)I-panitumumab uptake of 7.4% ID/g ± 1.2 (P = .0006 and P = .0001, respectively). MR imaging fusion with SPECT/CT provided more accurate information about (111)In-panitumumab localization in the tumor, as the tumor was poorly visualized at CT alone. CONCLUSION This study demonstrates the utility of radiolabeled anti-HER1 antibodies in the imaging of MPM in preclinical models. SUPPLEMENTAL MATERIAL http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.12121021/-/DC1.
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Affiliation(s)
- Tapan K Nayak
- Radioimmune & Inorganic Chemistry Section, Radiation Oncology Branch, and Molecular Imaging Program, National Cancer Institute, National Institutes of Health, 10 Center Dr, MSC 1182, Building 10, Room B3B69F, Bethesda, MD 20892, USA.
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Heyerdahl H, Abbas N, Brevik EM, Mollatt C, Dahle J. Fractionated therapy of HER2-expressing breast and ovarian cancer xenografts in mice with targeted alpha emitting 227Th-DOTA-p-benzyl-trastuzumab. PLoS One 2012; 7:e42345. [PMID: 22879947 PMCID: PMC3411767 DOI: 10.1371/journal.pone.0042345] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 07/04/2012] [Indexed: 01/01/2023] Open
Abstract
Background The aim of this study was to investigate therapeutic efficacy and normal tissue toxicity of single dosage and fractionated targeted alpha therapy (TAT) in mice with HER2-expressing breast and ovarian cancer xenografts using the low dose rate radioimmunoconjugate 227Th-DOTA-p-benzyl-trastuzumab. Methodology/Principal Findings Nude mice carrying HER2-overexpressing subcutaneous SKOV-3 or SKBR-3 xenografts were treated with 1000 kBq/kg 227Th-trastuzumab as single injection or four injections of 250 kBq/kg with intervals of 4–5 days, 2 weeks, or 4 weeks. Control animals were treated with normal saline or unlabeled trastuzumab. In SKOV-3 xenografts tumor growth to 10-fold size was delayed (p<0.01) and survival with tumor diameter less than 16 mm was prolonged (p<0.05) in all TAT groups compared to the control groups. No statistically significant differences were seen among the treated groups. In SKBR-3 xenografts tumor growth to 10-fold size was delayed in the single injection and 4–5 days interval groups (p<0.001) and all except the 4 weeks interval TAT group showed improved survival to the control groups (p<0.05). Toxicity was assessed by blood cell counts, clinical chemistry measurements and body weight. Transient reduction in white blood cells was seen for the single injection and 4–5 days interval groups (p<0.05). No significant changes were seen in red blood cells, platelets or clinical chemistry parameters. Survival without life threatening loss of body weight was significantly prolonged in 4 weeks interval group compared to single injection group (p<0.05) for SKOV-3 animals and in 2 weeks interval group compared with the 4–5 days interval groups (p<0.05) for SKBR-3 animals. Conclusions/Significance The same concentration of radioactivity split into several fractions may improve toxicity of 227Th-radioimmunotherapy while the therapeutic effect is maintained. Thus, it might be possible to increase the cumulative absorbed radiation dose to tumor with acceptable toxicity by fractionation of the dosage.
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MESH Headings
- Animals
- Antibodies, Monoclonal, Humanized/administration & dosage
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/therapeutic use
- Autoradiography
- Breast Neoplasms/drug therapy
- Breast Neoplasms/pathology
- Cell Line, Tumor
- Cell Proliferation
- Dose Fractionation, Radiation
- Dose-Response Relationship, Radiation
- Female
- Heterocyclic Compounds, 1-Ring/administration & dosage
- Heterocyclic Compounds, 1-Ring/adverse effects
- Heterocyclic Compounds, 1-Ring/therapeutic use
- Humans
- Leukocyte Count
- Mice
- Mice, Nude
- Organometallic Compounds/administration & dosage
- Organometallic Compounds/adverse effects
- Organometallic Compounds/therapeutic use
- Ovarian Neoplasms/drug therapy
- Ovarian Neoplasms/pathology
- Receptor, ErbB-2/metabolism
- Survival Analysis
- Time Factors
- Trastuzumab
- Tumor Burden
- Weight Loss
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Helen Heyerdahl
- Department of Radiation Biology, Institute for Cancer Research, Oslo University, Hospital - The Norwegian Radium Hospital, Oslo, Norway.
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Abstract
Targeting of radionuclides with antibodies, or radioimmunotherapy, has been an active field of research spanning nearly 50 years, evolving with advancing technologies in molecular biology and chemistry, and with many important preclinical and clinical studies illustrating the benefits, but also the challenges, which all forms of targeted therapies face. There are currently two radiolabeled antibodies approved for the treatment of non-Hodgkin lymphoma, but radioimmunotherapy of solid tumors remains a challenge. Novel antibody constructs, focusing on treatment of localized and minimal disease, and pretargeting are all promising new approaches that are currently under investigation.
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Nayak TK, Brechbiel MW. 86Y based PET radiopharmaceuticals: radiochemistry and biological applications. Med Chem 2012; 7:380-8. [PMID: 21711222 DOI: 10.2174/157340611796799249] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 03/14/2011] [Indexed: 11/22/2022]
Abstract
Development of targeted radionuclide therapy with (90)Y labeled antibodies and peptides has gained momentum in the past decade due to the successes of (90)Y-ibritumomab tiuxetan and (90)Y-DOTA-Phe(1)-Tyr(3)-octreotide in treatment of cancer. (90)Y is a pure β(-)-emitter and cannot be imaged for patient-specific dosimetry which is essential for pre-therapeutic treatment planning and accurate absorbed dose estimation in individual patients to mitigate radiation related risks. This review article describes the utility of (86)Y, a positron emitter (33%) with a 14.7-h half-life that can be imaged by positron emission tomography and used as an isotopically matched surrogate radionuclide for (90)Y radiation doses estimations. This review discusses various aspects involved in the development of (86)Y labeled radiopharmaceuticals with the specific emphasis on the radiochemistry and biological applications with antibodies and peptides.
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Affiliation(s)
- Tapan K Nayak
- Imaging Sciences, Translational Research Sciences, Pharma Research and Early Development, F. Hoffmann-La Roche Ltd., Basel, Switzerland
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Yong KJ, Milenic DE, Baidoo KE, Brechbiel MW. (212)Pb-radioimmunotherapy induces G(2) cell-cycle arrest and delays DNA damage repair in tumor xenografts in a model for disseminated intraperitoneal disease. Mol Cancer Ther 2012; 11:639-48. [PMID: 22238365 DOI: 10.1158/1535-7163.mct-11-0671] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In preclinical studies, targeted radioimmunotherapy using (212)Pb-TCMC-trastuzumab as an in vivo generator of the high-energy α-particle emitting radionuclide (212)Bi is proving an efficacious modality for the treatment of disseminated peritoneal cancers. To elucidate mechanisms associated with this therapy, mice bearing human colon cancer LS-174T intraperitoneal xenografts were treated with (212)Pb-TCMC-trastuzumab and compared with the nonspecific control (212)Pb-TCMC-HuIgG, unlabeled trastuzumab, and HuIgG, as well as untreated controls. (212)Pb-TCMC-trastuzumab treatment induced significantly more apoptosis and DNA double-strand breaks (DSB) at 24 hours. Rad51 protein expression was downregulated, indicating delayed DNA double-strand damage repair compared with (212)Pb-TCMC-HuIgG, the nonspecific control. (212)Pb-TCMC-trastuzumab treatment also caused G(2)-M arrest, depression of the S phase fraction, and depressed DNA synthesis that persisted beyond 120 hours. In contrast, the effects produced by (212)Pb-TCMC-HuIgG seemed to rebound by 120 hours. In addition, (212)Pb-TCMC-trastuzumab treatment delayed open chromatin structure and expression of p21 until 72 hours, suggesting a correlation between induction of p21 protein and modification in chromatin structure of p21 in response to (212)Pb-TCMC-trastuzumab treatment. Taken together, increased DNA DSBs, impaired DNA damage repair, persistent G(2)-M arrest, and chromatin remodeling were associated with (212)Pb-TCMC-trastuzumab treatment and may explain its increased cell killing efficacy in the LS-174T intraperitoneal xenograft model for disseminated intraperitoneal disease.
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Affiliation(s)
- Kwon Joong Yong
- Radioimmune & Inorganic Chemistry Section, Radiation Oncology Branch, National Cancer Institute, NIH, 10 Center Drive, Bethesda, MD 20892, USA
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Chang AJ, DeSilva R, Jain S, Lears K, Rogers B, Lapi S. 89Zr-Radiolabeled Trastuzumab Imaging in Orthotopic and Metastatic Breast Tumors. Pharmaceuticals (Basel) 2012; 5:79-93. [PMID: 24288044 PMCID: PMC3763623 DOI: 10.3390/ph5010079] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 12/14/2011] [Accepted: 12/22/2011] [Indexed: 12/22/2022] Open
Abstract
The human epidermal growth factor receptor 2 (HER2/neu) is overexpressed in 20-30% of breast cancers and is associated with tumor growth, angiogenesis, and development of distant metastases. Trastuzumab, an anti-HER2 monoclonal antibody, is used for the treatment of HER2 positive breast cancer and clinical efficacy of this agent is dependent on HER2 expression. Targeted PET imaging of HER2 with radiolabeled trastuzumab may be used to determine HER2 expression levels and guide therapy selection. The purpose of the current study was to evaluate a facile 89Zr-trastuzumab preparation method that can be efficiently applied for clinical grade production. Also, relative HER2 expression levels in orthotopic and metastatic breast cancer models were assessed by PET imaging using the 89Zr-trastuzumab produced by this simpler method.
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Affiliation(s)
- Albert J. Chang
- Department of Radiation Oncology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA; (A.J.C.); (K.L.); (B.R.)
| | - Ravindra DeSilva
- Department of Radiological Sciences, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA; (R.D.); (S.J.)
| | - Sandeep Jain
- Department of Radiological Sciences, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA; (R.D.); (S.J.)
| | - Kimberley Lears
- Department of Radiation Oncology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA; (A.J.C.); (K.L.); (B.R.)
| | - Buck Rogers
- Department of Radiation Oncology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA; (A.J.C.); (K.L.); (B.R.)
| | - Suzanne Lapi
- Department of Radiological Sciences, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA; (R.D.); (S.J.)
- Author to whom correspondence should be addressed; ; Tel.: +1-314-362-4696; Fax: +1-314-362-9940
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Pre-Clinical Assessment of Lu-Labeled Trastuzumab Targeting HER2 for Treatment and Management of Cancer Patients with Disseminated Intraperitoneal Disease. Pharmaceuticals (Basel) 2011; 5:1-15. [PMID: 22229017 PMCID: PMC3250925 DOI: 10.3390/ph5010001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Studies from this laboratory have demonstrated the potential of targeting HER2 for therapeutic and imaging applications with medically relevant radionuclides. To expand the repertoire of trastuzumab as a radioimmunoconjugate (RIC) vector, use of (177)Lu was investigated. The combination of a 6.7 d half-life, lower energy β(-)-emissions (500 keV max; 130 keV ave), and an imagable γ-emission make (177)Lu an attractive candidate for radioimmunotherapy (RIT) regimens for treatment of larger tumor burdens not possible with α-zparticle radiation. Radiolabeling trastuzumab-CHX-A"-DTPA with (177)Lu was efficient with a specific binding of 60.8 ± 6.8% with HER2 positive SKOV-3 cells. Direct quantitation of tumor targeting and normal tissue uptake was performed with athymic mice bearing subcutaneous and intraperitoneal LS-174T xenografts; a peak tumor %ID/g of 24.70 ± 10.29 (96 h) and 31.70 ± 16.20 (72 h), respectively, was obtained. Normal tissue uptake of the RIC was minimal. Tumor targeting was also demonstrated by γ-scintigraphy. A therapy study administering escalating doses of (177)Lu-trastuzumab to mice bearing three day LS-174T i.p. xenografts established the effective therapeutic dose of i.p. administered (177)Lu-trastuzumab at 375 μCi with a median survival of 124.5 d while a median survival of 10 d was noted for the control (untreated) group. In conclusion, trastuzumab radiolabeled with (177)Lu has potential for treatment of disseminated, HER2 positive, peritoneal disease.
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Malmberg J, Sandström M, Wester K, Tolmachev V, Orlova A. Comparative biodistribution of imaging agents for in vivo molecular profiling of disseminated prostate cancer in mice bearing prostate cancer xenografts: focus on 111In- and 125I-labeled anti-HER2 humanized monoclonal trastuzumab and ABY-025 Affibody. Nucl Med Biol 2011; 38:1093-102. [DOI: 10.1016/j.nucmedbio.2011.04.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 04/12/2011] [Accepted: 04/15/2011] [Indexed: 01/28/2023]
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Huang Z, Saluja A, Dudeja V, Vickers S, Buchsbaum D. Molecular targeted approaches for treatment of pancreatic cancer. Curr Pharm Des 2011; 17:2221-38. [PMID: 21777178 PMCID: PMC3422746 DOI: 10.2174/138161211796957427] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 06/20/2011] [Indexed: 02/07/2023]
Abstract
Human pancreatic cancer remains a highly malignant disease with almost similar incidence and mortality despite extensive research. Many targeted therapies are under development. However, clinical investigation showed that single targeted therapies and most combined therapies were not able to improve the prognosis of this disease, even though some of these therapies had excellent anti-tumor effects in pre-clinical models. Cross-talk between cell proliferation signaling pathways may be an important phenomenon in pancreatic cancer, which may result in cancer cell survival even though some pathways are blocked by targeted therapy. Pancreatic cancer may possess different characteristics and targets in different stages of pathogenesis, maintenance and metastasis. Sensitivity to therapy may also vary for cancer cells at different stages. The unique pancreatic cancer structure with abundant stroma creates a tumor microenvironment with hypoxia and low blood perfusion rate, which prevents drug delivery to cancer cells. In this review, the most commonly investigated targeted therapies in pancreatic cancer treatment are discussed. However, how to combine these targeted therapies and/or combine them with chemotherapy to improve the survival rate of pancreatic cancer is still a challenge. Genomic and proteomic studies using pancreatic cancer samples obtained from either biopsy or surgery are recommended to individualize tumor characters and to perform drug sensitivity study in order to design a tailored therapy with minimal side effects. These studies may help to further investigate tumor pathogenesis, maintenance and metastasis to create cellular expression profiles at different stages. Integration of the information obtained needs to be performed from multiple levels and dimensions in order to develop a successful targeted therapy.
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Affiliation(s)
- Z.Q. Huang
- Department of Radiation Oncology, University of Alabama at Birmingham USA
| | - A.K. Saluja
- Department of Surgery, University of Minnesota, USA
| | - V. Dudeja
- Department of Surgery, University of Minnesota, USA
| | - S.M. Vickers
- Department of Surgery, University of Minnesota, USA
| | - D.J. Buchsbaum
- Department of Radiation Oncology, University of Alabama at Birmingham USA
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