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A novel PEG-A6-conjugated irinotecan derivative 8 was designed and synthesized as antitumor agent by the PEGylation and A6-peptide modification of irinotecan. In vivo antitumor activity screening assay revealed that 8 exhibited better in vivo antiproliferation activity than irinotecan and its previous PEG-cRGD-conjugated derivative BGC0222 in MIA PaCa-2, NCI-H446, MDA-MB-231, HT-29 and NCI-N87 xenograft models, while the tumor of one in six mice in NCI-H446 assay and the tumors of two in six mice in MIA PaCa-2 assay completely subsided and disappeared within the 21-day period of 8-treatment, indicating that 8 should be a potential antitumor agent. Copyright © 2019 Elsevier Ltd. All rights reserved.


Yang-Qing Huang, Jian-Dong Yuan, Hai-Feng Ding, Yun-Song Song, Gang Qian, Jia-Li Wang, Min Ji, Ye Zhang. Design, synthesis and antitumor activity of a novel PEG-A6-conjugated irinotecan derivative. Bioorganic & medicinal chemistry letters. 2020 Jan 15;30(2):126847

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PMID: 31836440

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