Biodistribution and Pharmacokinetics of p-Boronophenylalanine in C57BL/6 Mice with GL261 Intracerebral Tumors, and Survival Following Neutron Capture Therapy
Because much of the theoretical rationale for NCT rests on the availability of agents capable of selectively transporting 10B to tumor cells, the ability to quantify differential 10B distributions in tissue exposed to such agents is clearly of major importance. Also, since the precise intracellular location of 10B can strongly influence the biological effect of the alpha particle and 7Li recoil radiation following thermal neutron capture by 10B1, an analytic technique with a resolution of 2–3 μm is of obvious value. We have implemented a modified version of an autoradiography technique, originally developed in our laboratory at MIT2 and added a computer-aided analytic capability based on a Macintosh-II computer with a CCD TV camera and Image Analyst software (Automatix Corp., Billerica, Massachusetts)3–4. We will briefly describe our implementation of this technique and present results from a p-boronophenylalanine (BPA) biodistribution and pharmacokinetic study in an intracerebral mouse glioma and a survival study to evaluate the efficacy of NCT in this tumor model.
KeywordsBoron Concentration Boron Neutron Capture Therapy Prompt Gamma Thermal Neutron Capture GL261 Tumor
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