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Karacosta LG, Fisk JC, Jessee J, Tati S, Turner B, Ghazal D, Ludwig R, Johnson H, Adams J, Sajjad M, Koury S, Roy R, Olson JR, Rittenhouse-Olson K. Preclinical Analysis of JAA-F11, a Specific Anti-Thomsen-Friedenreich Antibody via Immunohistochemistry and In Vivo Imaging. Transl Oncol 2018; 11:450-466. [PMID: 29477636 PMCID: PMC5834658 DOI: 10.1016/j.tranon.2018.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 01/10/2018] [Accepted: 01/16/2018] [Indexed: 01/20/2023] Open
Abstract
The tumor specificity of JAA-F11, a novel monoclonal antibody specific for the Thomsen-Friedenreich cancer antigen (TF-Ag-alpha linked), has been comprehensively studied by in vitro immunohistochemical (IHC) staining of human tumor and normal tissue microarrays and in vivo biodistribution and imaging by micro-positron emission tomography imaging in breast and lung tumor models in mice. The IHC analysis detailed herein is the comprehensive biological analysis of the tumor specificity of JAA-F11 antibody performed as JAA-F11 is progressing towards preclinical safety testing and clinical trials. Wide tumor reactivity of JAA-F11, relative to the matched mouse IgG3 (control), was observed in 85% of 1269 cases of breast, lung, prostate, colon, bladder, and ovarian cancer. Staining on tissues from breast cancer cases was similar regardless of hormonal or Her2 status, and this is particularly important in finding a target on the currently untargetable triple-negative breast cancer subtype. Humanization of JAA-F11 was recently carried out as explained in a companion paper "Humanization of JAA-F11, a Highly Specific Anti-Thomsen-Friedenreich Pancarcinoma Antibody and In Vitro Efficacy Analysis" (Neoplasia 19: 716-733, 2017), and it was confirmed that humanization did not affect chemical specificity. IHC studies with humanized JAA-F11 showed similar binding to human breast tumor tissues. In vivo imaging and biodistribution studies in a mouse syngeneic breast cancer model and in a mouse-human xenograft lung cancer model with humanized 124I- JAA-F11 construct confirmed in vitro tumor reactivity and specificity. In conclusion, the tumor reactivity of JAA-F11 supports the continued development of JAA-F11 as a targeted cancer therapeutic for multiple cancers, including those with unmet need.
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Affiliation(s)
| | | | | | | | - Bradley Turner
- Department of Pathology, University of Rochester, Rochester, NY.
| | | | | | | | - Julia Adams
- Department of Biotechnical and Clinical Laboratory Sciences, University at Buffalo, Buffalo, NY.
| | - Munawwar Sajjad
- Department of Nuclear Medicine, University at Buffalo, Buffalo, NY.
| | - Steven Koury
- Department of Biotechnical and Clinical Laboratory Sciences, University at Buffalo, Buffalo, NY.
| | - Rene Roy
- Glycovax Pharma Inc., Montreal, Quebec, Canada.
| | - James R Olson
- For-Robin, Inc, Buffalo, NY; Department of Pharmacology and Toxicology, University at Buffalo, Buffalo, NY.
| | - Kate Rittenhouse-Olson
- For-Robin, Inc, Buffalo, NY; Department of Biotechnical and Clinical Laboratory Sciences, University at Buffalo, Buffalo, NY.
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Koenig S, Krause P, Hosseini ASA, Dullin C, Rave-Fraenk M, Kimmina S, Entwistle AL, Hermann RM, Hess CF, Becker H, Christiansen H. Noninvasive Imaging of Liver Repopulation following Hepatocyte Transplantation. Cell Transplant 2009; 18:69-78. [DOI: 10.3727/096368909788237186] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Near infrared fluorescence (NIRF) optical imaging is a technique particularly powerful when studying in vivo processes at the molecular level in preclinical animal models. We recently demonstrated liver irradiation under the additional stimulus of partial hepatectomy as being an effective primer in the rat liver repopulation model based on hepatocyte transplantation. The purpose of this study was to assess optical imaging and the feasibility of donor cell expansion tracking in vivo using a fluorescent probe. Livers of dipeptidylpeptidase IV (DPPIV)-deficient rats were preconditioned with irradiation. Four days later, a partial hepatectomy was performed and wild-type (DPPIV+) hepatocytes were transplanted into recipient livers via the spleen. Repopulation by transplanted DPPIV+ hepatocytes was detected in vivo with Cy5.5-conjugated DPPIV antibody using the eXplore Optix™ System (GE HealthCare). Results were compared with nontransplanted control animals and transplanted animals receiving nonspecific antibody. Optical imaging detected Cy5.5-specific fluorescence in the liver region of the transplanted animals, increasing in intensity with time, representing extensive host liver repopulation within 16 weeks following transplantation. A general pattern of donor cell multiplication emerged, with an initially accelerating growth curve and later plateau phase. In contrast, no specific fluorescence was detected in the control groups. Comparison with ex vivo immunofluorescence staining of liver sections confirmed the optical imaging results. Optical imaging constitutes a potent method of assessing the longitudinal kinetics of liver repopulation in the rat transplantation model. Our results provide a basis for the future development of clinical protocols for suitable fluorescent dyes and imaging technologies.
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Affiliation(s)
- Sarah Koenig
- Department of General and Visceral Surgery, University Hospital Goettingen, Goettingen, Germany
| | - Petra Krause
- Department of General and Visceral Surgery, University Hospital Goettingen, Goettingen, Germany
| | | | - Christian Dullin
- Department of Radiology, University Hospital Goettingen, Goettingen, Germany
| | - Margret Rave-Fraenk
- Department of Radiotherapy, University Hospital Goettingen, Goettingen, Germany
| | - Sarah Kimmina
- Department of Laboratory Animal Science, University Hospital Goettingen, Goettingen, Germany
| | - Andrew Lee Entwistle
- Department of Genetic Epidemiology, University Hospital Goettingen, Goettingen, Germany
| | | | | | - Heinz Becker
- Department of General and Visceral Surgery, University Hospital Goettingen, Goettingen, Germany
| | - Hans Christiansen
- Department of Radiotherapy, University Hospital Goettingen, Goettingen, Germany
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