Evaluation of α-hydroxycinnamic acids as pyruvate carboxylase inhibitors
作者:Daniel J. Burkett、Brittney N. Wyatt、Mallory Mews、Anson Bautista、Ryan Engel、Chris Dockendorff、William A. Donaldson、Martin St. Maurice
DOI:10.1016/j.bmc.2019.07.027
日期:2019.9
5 μM respectively. Compound 8v is a competitive inhibitor with respect to pyruvate (Ki = 0.74 μM) and a mixed-type inhibitor with respect to ATP, indicating that it targets the unique carboxyltransferase (CT) domain of PC. Furthermore, compound 8v does not significantly inhibit human carbonic anhydrase II, matrix metalloproteinase-2, malate dehydrogenase or lactatedehydrogenase.
通过基于结构的药物设计项目(SBDD),发现了有效的丙酮酸羧化酶小分子抑制剂(PC)。制备了一系列α-酮酸(7)和α-羟基肉桂酸(8),并在两种测定中评估了其对PC的抑制作用。两种最有效的抑制剂是3,3'-(1,4-亚苯基)双[2-羟基-2-丙酸](8u)和2-羟基-3-(喹啉-2-基)丙酸(8v))的IC 50值分别为3.0±1.0μM和4.3±1.5μM。化合物8v是相对于丙酮酸(K i = 0.74μM)和针对ATP的混合型抑制剂,表明它靶向PC的独特羧基转移酶(CT)域。此外,化合物8v不会显着抑制人碳酸酐酶II,基质金属蛋白酶-2,苹果酸脱氢酶或乳酸脱氢酶。
5-Benzylidene-4-oxazolidinones potently inhibit biofilm formation in Methicillin-resistant Staphylococcus aureus
作者:Grant A. Edwards、Nataliia V. Shymanska、Joshua G. Pierce
DOI:10.1039/c7cc03626d
日期:——
Investigation into the biological function of 5-benzylidene-4-oxazolidinones revealed dose-dependent inhibition of biofilm formation in Methicillin-resistantS. aureus(MRSA).
Synthesis and biological evaluation of analogues of butyrolactone I and molecular model of its interaction with CDK2
作者:Miguel F. Braña、M. Luisa García、Berta López、Beatriz de Pascual-Teresa、Ana Ramos、Jose M. Pozuelo、M. Teresa Domínguez
DOI:10.1039/b403052d
日期:——
A series of analogues of butyrolactone I, a natural product isolated from Aspergillus terreus that selectively inhibits the CDK2 and CDK1 kinases and that has been found to exhibit an interesting antiproliferative activity, have been synthesized. Its antitumor activity has been tested. Molecular models of the complex between butyrolactone I and the CDK2 active site have been built using a combination of conformational search and automated docking techniques. The stability of the resulting complexes has been assessed by molecular dynamics simulations and the experimental results obtained for the synthesized analogues are rationalized based on the molecular models.
Design, synthesis, and biological evaluation of substrate-competitive inhibitors of C-terminal Binding Protein (CtBP)
作者:Sudha Korwar、Benjamin L. Morris、Hardik I. Parikh、Robert A. Coover、Tyler W. Doughty、Ian M. Love、Brendan J. Hilbert、William E. Royer、Glen E. Kellogg、Steven R. Grossman、Keith C. Ellis
DOI:10.1016/j.bmc.2016.04.037
日期:2016.6
C-terminal Binding Protein (CtBP) is a transcriptional co-regulator that downregulates the expression of many tumor-suppressor genes. Utilizing a crystal structure of CtBP with its substrate 4-methylthio-2-oxobutyric acid (MTOB) and NAD(+) as a guide, we have designed, synthesized, and tested a series of small molecule inhibitors of CtBP. From our first round of compounds, we identified 2-(hydroxyimino)-3-phenylpropanoic acid as a potent CtBP inhibitor (IC50 = 0.24 mu M). A structure-activity relationship study of this compound further identified the 4-chloro- (IC50 = 0.18 mu M) and 3-chloro- (IC50 = 0.17 mu M) analogues as additional potent CtBP inhibitors. Evaluation of the hydroxyimine analogues in a short-term cell growth/viability assay showed that the 4-chloro- and 3-chloro-analogues are 2-fold and 4-fold more potent, respectively, than the MTOB control. A functional cellular assay using a CtBP-specific transcriptional readout revealed that the 4-chloro- and 3-chloro-hydroxyimine analogues were able to block CtBP transcriptional repression activity. This data suggests that substrate-competitive inhibition of CtBP dehydrogenase activity is a potential mechanism to reactivate tumor-suppressor gene expression as a therapeutic strategy for cancer. (C) 2016 Elsevier Ltd. All rights reserved.