CHU Taiwei XIE Jinglin WANG Xiangyun. Preparation of Tc-carbonyl complexes of tryptophan and histidine and biodistribution in mice bearing S180 tumor[J]. Nuclear techniques, 2002, (5): 361-366.
CHU Taiwei XIE Jinglin WANG Xiangyun. Preparation of Tc-carbonyl complexes of tryptophan and histidine and biodistribution in mice bearing S180 tumor[J]. Nuclear techniques, 2002, (5): 361-366.DOI:
The Tc-carbonyl complexes of tryptophan and histidine were synthesized by two-step method. The yielded complexes were found by paper electrophoresis to be electrically neutral in three buffer solutions (pH=4.7
7.4
9.2). Their possible structures were postulated based on ab initio MO calculations. The biodistribution in mice bearing S180 tumor demonstrated that the Tc-carbonyl complex of histidine showed good stability in vivo and quick clearance
selectively accumulated in tumor. The tumor/muscle ratio attained 3 to 4. However
the complex of tryptophan showed poor stability in vivo and slow clearance
and retained for a long time in organs and tissues. It also accumulated in tumor to some extent. The tumor/muscle ratio attained 2 to 3. The labeling of proteins and polypeptides with the Tc(I)-carbonyl complex was also discussed.