scholarly journals Discovery of chebulagic acid and punicalagin as novel allosteric inhibitors of SARS-CoV-2 3CLpro

2021 ◽  
Vol 190 ◽  
pp. 105075
Author(s):  
Ruikun Du ◽  
Laura Cooper ◽  
Zinuo Chen ◽  
Hyun Lee ◽  
Lijun Rong ◽  
...  
Author(s):  
Shangfei Wei ◽  
Tianming Zhao ◽  
Jie Wang ◽  
Xin Zhai

: Allostery is an efficient and particular regulatory mechanism to regulate protein functions. Different from conserved orthosteric sites, allosteric sites have distinctive functional mechanism to form the complex regulatory network. In drug discovery, kinase inhibitors targeting the allosteric pockets have received extensive attention for the advantages of high selectivity and low toxicity. The approval of trametinib as the first allosteric inhibitor validated that allosteric inhibitors could be used as effective therapeutic drugs for treatment of diseases. To date, a wide range of allosteric inhibitors have been identified. In this perspective, we outline different binding modes and potential advantages of allosteric inhibitors. In the meantime, the research processes of typical and novel allosteric inhibitors are described briefly in terms of structureactivity relationships, ligand-protein interactions and in vitro and in vivo activity. Additionally, challenges as well as opportunities are presented.


2021 ◽  
Author(s):  
Matthijs van Haren ◽  
Yurui Zhang ◽  
Vito Thijssen ◽  
Ned Buijs ◽  
Yongzhi Gao ◽  
...  

Nicotinamide N-methyltransferase (NNMT) methylates nicotinamide to form 1-methylnicotinamide (MNA) using S-adenosyl-L-methionine (SAM) as the methyl donor. The complexity of the role of NNMT in healthy and disease states is slowly...


2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
A. P. Athira ◽  
A. Helen ◽  
K. Saja ◽  
P. Reddanna ◽  
P. R. Sudhakaran

Angiogenesis is a crucial step in the growth of cancer and its metastasis. It is regulated by several endogenous factors which may stimulate or inhibit the new blood vessel growth. Besides these endogenous factors, several exogenous factors including some natural compounds are known to modulate angiogenesis. Angiogenesis being a potential target for drugs against a number of pathological conditions, search for compounds from natural sources that can affect angiogenesis is of great interest. The objective of our present study was to understand the effect of chebulagic acid, a COX-LOX dual inhibitor isolated from the fruits ofTerminalia chebulaRetz., on angiogenesis. The model systems used were rat aortic rings and human umbilical vein endothelial cells. The results showed that chebulagic acid exerts an antiangiogenic effect. This was evidenced from decreased sprouting in rat aortic rings and decrease in biochemical markers in endothelial cells treated with chebulagic acid. It downregulated the production of CD31, E-selectin, and vascular endothelial growth factor in human umbilical vein endothelial cells in culture (HUVEC). Further studies to understand the molecular mechanism of action of chebulagic acid revealed that CA exerts its anti angiogenic effect by modulating VE cadherin-βcatenin signalling in human umbilical vein endothelial cells.


2005 ◽  
Vol 48 (14) ◽  
pp. 4547-4557 ◽  
Author(s):  
Steven Harper ◽  
Salvatore Avolio ◽  
Barbara Pacini ◽  
Marcello Di Filippo ◽  
Sergio Altamura ◽  
...  

2013 ◽  
Vol 91 (1) ◽  
pp. 66-81 ◽  
Author(s):  
Pierre L. Beaulieu ◽  
René Coulombe ◽  
James Gillard ◽  
Christian Brochu ◽  
Jianmin Duan ◽  
...  

Acylsulfonamide and acylsulfamide as surrogates for the carboxylic acid function of N-acetamide-indole-6-carboxylic acids were evaluated as allosteric inhibitors of hepatitis C virus (HCV) NS5B polymerase. Several analogs displayed excellent antiviral potency against both 1a and 1b HCV genotypes in cell-based subgenomic replicon assays. Structure–activity relationships (SAR) are discussed in the context of the crystal structure of an inhibitor − NS5B polymerase complex. Absorption, distribution, metabolism, and excretion pharmacokinetic (ADME-PK) properties of this class of inhibitors are also described.


2015 ◽  
Vol 25 (19) ◽  
pp. 4069-4073 ◽  
Author(s):  
Yutong Hu ◽  
Shuai Li ◽  
Fang Liu ◽  
Lv Geng ◽  
Xiaohong Shu ◽  
...  

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