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Updated: Jan 27, 2026

Rapid One-step Enzymatic Synthesis and All-aqueous Purification of Trehalose Analogues
Published on: February 17, 2017
Novel nannocystin A analogues as anticancer therapeutics: Synthesis, biological evaluations and structure-activity
Qiang Liu1, Xiaohong Yang1, Jie Ji1
1School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, Chongqing, 401331, PR China.
Abstract:
Nannocystin A is a novel 21-membered macrocyclic lactam that targets eukaryotic translation elongation factor 1α (eEF1A) and displays potent antiproliferative activities. Herein, a series of nannocystin A analogues were synthesized and their structure-activity relationship (SAR) were established based on the MTT assay and western blotting analysis. The SAR enabled us to identify a structurally simplified nannocystin A analogue LQ18, which exhibited potent antiproliferative activities with IC50 values ranging from 4.3 to 48 nM against the tested cell lines, and inhibited eEF1A1 expression in A549 cell line. LQ18 arrested cell cycle at G2 phase and induced A549 cell apoptosis via up-regulation of caspase-3, caspase-9 and bax protein expressions in a dose-dependent manner, while it significantly decreased the bcl-2 expression. Collectively, these data demonstrated that LQ18 could be a promising lead for the development of structurally novel eEF1A1 inhibitor for cancer treatment.
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