Boron Neutron Capture Therapy (BNCT) Mediated by Maleimide-Functionalized Closo -Dodecaborate Albumin Conjugates (MID:BSA) for Oral Cancer: Biodistribution Studies and In Vivo BNCT in the Hamster Cheek Pouch Oral Cancer Model.

Autor: Monti Hughes, Andrea, Goldfinger, Jessica A., Palmieri, Mónica A., Ramos, Paula, Santa Cruz, Iara S., De Leo, Luciana, Garabalino, Marcela A., Thorp, Silvia I., Curotto, Paula, Pozzi, Emiliano C. C., Kawai, Kazuki, Sato, Shinichi, Itoiz, María E., Trivillin, Verónica A., Guidobono, Juan S., Nakamura, Hiroyuki, Schwint, Amanda E.
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Zdroj: Life (2075-1729); Jul2022, Vol. 12 Issue 7, p1082-1082, 15p
Abstrakt: Background: BNCT (Boron Neutron Capture Therapy) is a tumor-selective particle radiotherapy that combines preferential boron accumulation in tumors and neutron irradiation. Although p-boronophenylalanine (BPA) has been clinically used, new boron compounds are needed for the advancement of BNCT. Based on previous studies in colon tumor-bearing mice, in this study, we evaluated MID:BSA (maleimide-functionalized closo-dodecaborate conjugated to bovine serum albumin) biodistribution and MID:BSA/BNCT therapeutic effect on tumors and associated radiotoxicity in the hamster cheek pouch oral cancer model. Methods: Biodistribution studies were performed at 30 mg B/kg and 15 mg B/kg (12 h and 19 h post-administration). MID:BSA/BNCT (15 mg B/kg, 19 h) was performed at three different absorbed doses to precancerous tissue. Results: MID:BSA 30 mg B/kg protocol induced high BSA toxicity. MID:BSA 15 mg B/kg injected at a slow rate was well-tolerated and reached therapeutically useful boron concentration values in the tumor and tumor/normal tissue ratios. The 19 h protocol exhibited significantly lower boron concentration values in blood. MID:BSA/BNCT exhibited a significant tumor response vs. the control group with no significant radiotoxicity. Conclusions: MID:BSA/BNCT would be therapeutically useful to treat oral cancer. BSA toxicity is a consideration when injecting a compound conjugated to BSA and depends on the animal model studied. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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