Open AccessEfficacy of monoclonal antibody 131 I‐B72.3 immunoscintigraphy of pancreatic adenocarcinoma xenografts in nude mice
Author(s) -
Kaufmann Lars W.,
Vaillant Jean C.,
van Gulik Thomas M.,
van Royen Erik A.,
Parc Rene,
Obertop Hugo
Publication year - 1999
Publication title -
european journal of surgery
Language(s) - English
Resource type - Journals
eISSN - 1741-9271
pISSN - 1102-4151
DOI - 10.1080/11024159950189717
Subject(s) - immunoscintigraphy , in vivo , medicine , monoclonal antibody , nude mouse , pathology , adenocarcinoma , pancreatic cancer , pancreatic disease , carcinoma , pancreas , peritoneum , antibody , cancer , radioimmunotherapy , immunology , biology , microbiology and biotechnology
Objective: To assess the efficacy of monoclonal antibody (MoAb) B72.3 for in vivo‐immunoscintigraphy of pancreatic carcinoma in nude mice. Design: Experimental controlled animal study. Setting: University hospital, The Netherlands. Subjects: 11 nude mice with subcutaneously xenografted human pancreatic carcinoma. Interventions: Specific MoAb B72.3 and non‐specific MoAb MOPC21 were iodinated with 131 I and injected intraperitoneally in nude mice. Scintigrams were taken on days 1–10 and tumour:non‐tumour ratios of the regions of interest (tumour, thorax, abdomen, background) were calculated. The mice were then killed for in vitro tissue counts. Main outcome measures: tumour:non‐tumour ratios in vivo and in vitro. Results: Results of immunoscintigraphy on days 1, 2, and 6 were compared. In the B72.3‐group all ratios were only moderately raised, the tumour:background ratio being the highest (2.35 (SD 0.67)) on day 6. There were no obvious differences between the ratios of the B72.3‐group and the MOPC21‐group. The results of tissue counts done at the end of the study, showed that tumour:non‐tumour ratios were twice as high in the B72.3‐group, suggesting some specificity of this MoAb. Conclusion: The results of our study suggest that MoAb B72.3 is not powerful enough for in vivo detection of pancreatic cancer as assessed in this xenograft model in nude mice. Copyright © 1999 Taylor and Francis Ltd.