نوع مقاله : مقاله پژوهشی
نویسندگان
1 1. دانشکده مهندسی انرژی، دانشگاه صنعتی شریف، صندق پستی: ۱۴۵۸۸۸۹۶۹۴، تهران-ایران
2 هیئت علمی
3 مدیر گروه مهندسی هسته ای- دانشکده مهندسی انرژی- دانشگاه صنعتی شریف
4 پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندق پستی: 836-14395، تهران-ایران
کلیدواژهها
موضوعات
عنوان مقاله English
نویسندگان English
Prostate-Specific Membrane Antigen (PSMA) is a membrane-bound glycoprotein that is overexpressed in prostate cancer. PSMA has been recognized as a promising target in the diagnosis and treatment of prostate cancer. Alpha particle-emitting radionuclides have shown promising results as radiotherapeutic agents for the treatment of metastatic castration-resistant prostate cancer (mCRPC). Actinium-225 (225Ac), with T½ = 9.9 d, has been one of the most commonly used options for clinical applications. 225Ac emits five alpha particles with energy ranges from 5.8 to 8.4 MeV during its decay chain. The decay cascade also includes beta particle emissions ranging from 0.6 to 2 MeV and gamma emissions from Francium-221 (221Fr) and Bismuth-213 (213Bi). Considering the favorable properties of this radionuclide for targeted alpha therapy of prostate cancer, this study initially determined the radionuclide purity of 225Ac using gamma spectrometry equipped with a high-resolution high-purity germanium detector and a liquid scintillation detector. Then, PSMA-617 labeling was performed with 225Ac at 95°C for 30 minutes. The radiochemical purity of the resulting compound was determined to be over %96 using thin-layer chromatography. This study demonstrated the successful labeling of PSMA-617 with 225Ac under optimal conditions and high radiochemical purity for clinical applications.
کلیدواژهها English