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  • Title: Development of single vial kits for preparation of 68 Ga-labelled hexavalent lactoside for PET imaging of asialoglycoprotein receptor.
    Author: Yu HM, Chan CH, Chen JH, Chien CY, Wang PY, Juan WC, Yang CH, Hsia HT, Wang MH, Lin WJ.
    Journal: J Labelled Comp Radiopharm; 2018 Oct; 61(12):885-894. PubMed ID: 30089196.
    Abstract:
    The aim of this study was to formulate and evaluate the freeze-dried kit of NOTA-hexavalent lactoside (NOTA-HL) for the preparation of 68 Ga-labeled glycoligand for PET imaging of the asialoglycoprotein receptor (ASGPR). 68 GaCl3 was obtained from a commercial 68 Ge/68 Ga generator. Single-vial kits of HL were formulated. Optimization of radiolabeling with 68 Ga, various evaluations of NOTA-HL kits, and in vitro stability study of 68 Ga-HL were carried out. PET/CT imaging of normal mice injected with 68 Ga-NOTA-HL was performed. NOTA-HL kit was successfully formulated. High radiochemical yields (>95%) were obtained by 68 Ga radiolabeling. The NOTA-HL kits were stable for at least 12 months, and 68 Ga-NOTA-HL exhibited good in vitro stability. PET studies in normal mice revealed high specific accumulation of activity in the liver. The NOTA-HL kit was developed for fast 68 Ga labeling. 68 Ga-NOTA-HL showed high specific uptake in liver. The availability of ready-to-use NOTA-HL kits combined with 68 Ge/68 Ga generators would provide an efficient approach for PET imaging of ASGPR.
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