Carborane derivatives loaded into liposomes as efficient delivery systems for boron neutron capture therapy.
J Med Chem
; 52(23): 7829-35, 2009 Dec 10.
Article
in En
| MEDLINE
| ID: mdl-19954249
ABSTRACT
Boron neutron capture therapy (BNCT) is an anticancer therapy based on the incorporation of (10)B in tumors, followed by neutron irradiation. Recently, the synthesis and delivery of new boronated compounds have been recognized as some of the main challenges in BNCT application. Here, we report on the use of liposomes as carriers for BNCT active compounds. Two carborane derivatives, i.e., o-closocarboranyl beta-lactoside (LCOB) and 1-methyl-o-closocarboranyl-2-hexylthioporphyrazine (H(2)PzCOB), were loaded into liposomes bearing different surface charges. The efficacy of these formulations was tested on model cell cultures, that is, DHD/K12/TRb rat colon carcinoma and B16-F10 murine melanoma. These induce liver and lung metastases, respectively, and are used to study the uptake of standard BNCT drugs, including borophenylalanine (BPA). Boron concentration in treated cells was measured by alpha spectrometry at the TRIGA mark II reactor (University of Pavia). Results showed high performance of the proposed formulations. In particular, the use of cationic liposomes increased the cellular concentration of (10)B by at least 30 times more than that achieved by BPA.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Boranes
/
Carbon
/
Drug Carriers
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Boron Neutron Capture Therapy
/
Liposomes
Limits:
Animals
Language:
En
Journal:
J Med Chem
Year:
2009
Document type:
Article