Published in:
01-04-2012 | Research Article
18F-FDG PET/CT Imaging Detects Therapy Efficacy of Anti-EMMPRIN Antibody and Gemcitabine in Orthotopic Pancreatic Tumor Xenografts
Authors:
Nemil Shah, Guihua Zhai, Joseph A. Knowles, Cecil R. Stockard, William E. Grizzle, Naomi Fineberg, Tong Zhou, Kurt R. Zinn, Eben L. Rosenthal, Hyunki Kim
Published in:
Molecular Imaging and Biology
|
Issue 2/2012
Login to get access
Abstract
Purpose
The objective of this study is to evaluate the therapeutic response to a novel monoclonal antibody targeting human extracellular matrix metalloproteinase inducer (EMMPRIN) in combination with gemcitabine in a pancreatic-tumor xenograft murine model by sequential 2-deoxy-2-[18F]fluoro-d-glucose (18F-FDG) positron emission tomography/computed tomgraphy (PET/CT) imaging.
Procedures
Four groups of SCID mice bearing orthotopic pancreatic tumor xenografts were injected with phosphate-buffered saline, gemcitabine (120 mg/kg BW), anti-EMMPRIN antibody (0.2 mg), or combination, respectively, twice weekly for 2 weeks, while 18F-FDG PET/CT imaging was performed weekly for 3 weeks. Changes in mean standardized uptake value (SUVmean) of 18F-FDG and volume of tumors were determined.
Results
The tumor SUVmean change in the group receiving combination therapy was significantly lower than those of the other groups. Tumor-volume changes of groups treated with anti-EMMPRIN monotherapy or combined therapy were significantly lower than that of the control group.
Conclusions
These data provide support for clinical studies of anti-EMMPRIN therapy with gemcitabine for pancreatic cancer treatment.