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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Ji Youn (Department of Biomedical Sciences, Seoul National University College of Medicine) Kim, Hoyoung (Department of Nuclear Medicine, Seoul National University College of Medicine) Lee, Boeun (Department of Nuclear Medicine, Seoul National University College of Medicine) Kim, Young Ju (Department of Nuclear Medicine, Seoul National University College of Medicine) Lee, Yun-Sang (Department of Nuclear Medicine, Seoul National University College of Medicine) Jeong, Jae Min (Department of Biomedical Sciences, Seoul National University College of Medicine)
저널정보
대한방사성의약품학회 대한방사성의약품학회지 대한방사성의약품학회지 제1권 제2호
발행연도
2015.1
수록면
104 - 108 (5page)

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Human serum albumin (HSA) has potential for diagnosis and therapy in clinical setting. The purpose of experiments was to develop and evaluate $^{68}Ga$-HSA as a PET agent for diagnosis of acute inflammation. NOTA-HSA was synthesized by conjugating 2-(p-isothiocyanatobenzyl)-1,4,7-triazacyclononane-1,4,7-triacetic acid to HSA in 0.1 M sodium carbonate buffer (pH 9.5) and then purified using a PD-10 size-exclusion column. NOTA-HSA was labeled with $^{68}Ga$ at room temperature for 10 min, and 8.4% sodium hydrogen carbonate buffer was added for neutralization. $^{68}Ga$-NOTA-HSA was purified using alumina N plus light cartridge and $0.22{\mu}m$ syringe filter. Labeling efficiency and radiochemical purity were determined by ITLC-SG with 0.1 M citric acid. Biodistribution study was performed in a male BALB/c mice model of Carrageenan-induced acute inflammation. Animal PET study was performed in acute inflammation mice model after tail vein injection of $^{68}Ga$-HSA. This radiotracer showed high labeling efficiency (>99%) around pH 7. Biodistribution study showed higher inflamed footpad uptake than control footpad uptake. Animal PET study revealed 2 times higher uptake on inflamed footpad compared to control footpad. In these experiments, we developed $^{68}Ga$-HSA for acute inflammation PET imaging and evaluated it in a mouse disease model. The results demonstrated that $^{68}Ga$-HSA has potential as a PET imaging agent for diagnosis of acute inflammation.

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