Polyethylene glycol complexed with boronophenylalanine as a potential alternative to fructose-boronophenylalanine complexation to increase cellular uptake for BNCT Treatment

Objective Boron Neutron Capture Therapy (BNCT) is a novel precision radiotherapy. The key to BNCT application lies in the effective targeting and retention of the boron-10 (10B) carrier. Among the various compounds studied in clinical settings, 4-boronophenylalanine (BPA) become the most prevalent one currently. However, challenges such as inadequate solubility and restricted tumor accumulation have affected the clinical efficacy of treatment with BPA. Therefore, there is an urgent need to prepare formulations with higher tumor uptake efficiency and increased intratumoral accumulation.