- Discovery of Novel Apigenin-Piperazine Hybrids as Potent and Selective Poly (ADP-Ribose) Polymerase-1 (PARP-1) Inhibitors for the Treatment of Cancer
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Poly (ADP-ribose) polymerase-1 (PARP-1) is a potential target for the discovery of chemosensitizers and anticancer drugs. Amentoflavone (AMF) is reported to be a selective PARP-1 inhibitor. Here, structural modifications and trimming of AMF have led to a series of AMF derivatives (9a-h) and apigenin-piperazine/piperidine hybrids (14a-p, 15a-p, 17a-h, and 19a-f), respectively. Among these compounds, 15l exhibited a potent PARP-1 inhibitory effect (IC50 = 14.7 nM) and possessed high selectivity to PARP-1 over PARP-2 (61.2-fold). Molecular dynamics simulation and the cellular thermal shift assay revealed that 15l directly bound to the PARP-1 structure. In in vitro and in vivo studies, 15l showed a potent chemotherapy sensitizing effect against A549 cells and a selective cytotoxic effect toward SK-OV-3 cells through PARP-1 inhibition. 15l·2HCl also displayed good ADME characteristics, pharmacokinetic parameters, and a desirable safety margin. These findings demonstrated that 15l·2HCl may serve as a lead compound for chemosensitizers and the (BRCA-1)-deficient cancer therapy.
- Long, Huan,Hu, Xiaolong,Wang, Baolin,Wang, Quan,Wang, Rong,Liu, Shumeng,Xiong, Fei,Jiang, Zhenzhou,Zhang, Xiao-Qi,Ye, Wen-Cai,Wang, Hao
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p. 12089 - 12108
(2021/09/06)
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- Synthesis and biological evaluation of substituted 4-(thiophen-2-ylmethyl)- 2H-phthalazin-1-ones as potent PARP-1 inhibitors
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We have developed a series of substituted 4-(thiophen-2-ylmethyl)-2H- phthalazin-1-ones as potent PARP-1 inhibitors. Preliminary biological evaluation indicated that most compounds possessed inhibitory potencies comparable to, or higher than AZD-2281. Among these compounds, 18q appeared to be the most notable one, which displayed an 8-fold improvement in enzymatic activity compared to AZD-2281. These efforts lay the foundation for our further investigation.
- Wang, Ling-Xiao,Zhou, Xin-Bo,Xiao, Meng-Liang,Jiang, Ning,Liu, Feng,Zhou, Wen-Xia,Wang, Xiao-Kui,Zheng, Zhi-Bing,Li, Song
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p. 3739 - 3743
(2014/09/17)
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- A triazene-based new photolabile linker in solid phase chemistry
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An extension of the T2 linker methodology by showing its applicability as a photocleavable linker is reported. Photocleavage was carried out with 355nm UV laser irradiation (3ω Nd-YAG) in methanol/diethyl ether and is suitable for protected amino acid derivatives, as well as simple small organic molecules including resin-bound biotin. The linker is stable under a wide range of conditions with the exception of strongly acidic media.
- Enders, Dieter,Rijksen, Christiaan,Bremus-K?bberling, Elke,Gillner, Arnold,K?bberling, Johannes
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p. 2839 - 2841
(2007/10/03)
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