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Letters in Drug Design & Discovery


ISSN (Print): 1570-1808
ISSN (Online): 1875-628X

Letter Article

Design, Synthesis and Biological Evaluation of Camptothecin Conjugated with NSAIDs as Novel Dual-actin Antitumor Agents

Author(s): Xingchen Cai, Weiwei Huang, Yi Huang, Lihua Xia, Miao Liu, Mengke Wang, Wenchao Wang and Qingyong Li*

Volume 16, Issue 12, 2019

Page: [1378 - 1386] Pages: 9

DOI: 10.2174/1570180816666190221103257

Price: $65


Background: The single-agent therapy was unable to provide an effective control of the malignant process, a well-established strategy to improve the efficacy of antitumor therapy is the rational design of drug combinations aimed at achieving synergistic effects.

Objective: The objective of this study is generating the new potential anticancer agents with synergistic activity. Owing to the unique mechanism of action of Camptothecin (CPT), it has shown abroad spectrum of anti-cancer activity against human malignancies, and growing evidence revealed that Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) reduce the risk of different kinds of cancers. So four CPT-NSAIDs conjugates were synthesized and evaluated.

Methods: In this study, a series of novel CPT - NSAIDs derivatives were synthesized by esterification. These new compounds were evaluated for in vitro antitumor activity against tumor cell lines A549, Hela, HepG2, HCT116 by MTT assay. To probe the required stabilities as prodrugs, stability tests were studied in human plasma. To further evaluate the stability of Ketoprofen-CPT in vivo, the female SD rats were used to determine the pharmacokinetics following a single oral dose.

Results: In vitro results showed that Ketoprofen-CPT and Naproxen-CPT conjugates possessed nice efficacy. In a molecular docking model, the two conjugates interacted with Topo I-DNA through hydrogen bonds, - stacking and so on.In human plasma results showed that the prodrug was converted to ketoprofen and another compound. The female SD rats were used to determine the pharmacokinetics following a single oral dose, the half-life (t1/2) of Ketoprofen-CPT was approximately 12 h which was much longer than that of CPT.

Conclusion: Good activity was noted for some compounds will be helpful for the design of dualaction agents with most promising anti-cancer activity.

Keywords: Camptothecin-NSAIDs conjugate, antineoplastic, synthesis, dual-action, molecular docking, topoisomerase.

Graphical Abstract
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