Analogs of the Catechol Derivative Dynasore Inhibit HIV-1 Ribonuclease H, SARS-CoV-2 nsp14 Exoribonuclease, and Virus Replication
作者:Abhishek Asthana、Angela Corona、Woo-Jin Shin、Mi-Jeong Kwak、Christina Gaughan、Enzo Tramontano、Jae U. Jung、Rainer Schobert、Babal Kant Jha、Robert H. Silverman、Bernhard Biersack
DOI:10.3390/v15071539
日期:——
ribonucleases, which are therefore candidate targets for antiviral drugs. Here, we synthesized and studied the antiviral properties of a novel nitrocatechol compound (1c) and other analogs that are structurally related to the catechol derivative dynasore. Interestingly, compound 1c strongly inhibited two DEDD box viral ribonucleases, HIV-1 RNase H and SARS-CoV-2 nsp14 3′-to-5′ exoribonuclease (ExoN). While
Dynamin is a key regulatory protein in clathrin mediated endocytosis. Compared to genetic or immunological tools, small chemical dynamin inhibitors such as dynasore have the potential to study the dynamic nature of endocytic events in cells. Dynasore inhibits dynamin GTPase activity and transferrin uptake at IC(50) similar to 15 mu M but use in some biological applications requires more potent inhibitor than dynasore. Here, we chemically modified the side chains of dynasore and found that two derivatives, DD-6 and DD-11 more potently inhibited transferrin uptake (IC(50): 4.00 mu M for DD-6, 2.63 mu M for DD-11) and dynamin GTPase activity (IC(50:) 5.1 mu M for DD-6, 3.6 mu M for DD-11) than dynasore. The effect was reversible and they were washed more rapidly out than dynasore. TIRF microscopy showed that they stabilize the clathrin coats on the membrane. Our results indicated that new dynasore derivatives are more potent inhibitor of dynamin, displaying promise as leads for the development of more effective analogues for broader biological applications. (c) 2010 Elsevier Ltd. All rights reserved.
Synthesis, Biological Evaluation and<i>in Silico</i>Studies of 3‐Hydroxy‐<i>N</i>‐(2‐(substituted phenyl)‐4‐oxothiazolidin‐3‐yl)‐2‐napthamide Derivatives
present study, a series of 3-hydroxy-N-(2-(substituted phenyl)-4-oxothiazolidin-3-yl)-2-napthamide derivatives were synthesized, characterized and evaluated for theirin vitroactivity, i. e., antimicrobial, antioxidant and anti-inflammatory. The target compounds were synthesized by condensation reaction of 3-hydroxy-2-naphthoic acid hydrazide with substituted benzaldehydes which were subjected to cyclization