Light-Activated Regulation of Cofilin Dynamics Using a Photocaged Hydrogen Peroxide Generator
摘要:
Hydrogen peroxide (H2O2) can exert diverse signaling and stress responses within living systems depending on its spatial and temporal dynamics. Here we report a new small-molecule probe for producing H2O2 on demand upon photoactivation and its application for optical regulation of cofilin-actin rod formation in living cells. This chemical method offers many potential opportunities for dissecting biological roles for H2O2 as well as remote control of cell behavior via H2O2-mediated pathways.
Enantioselective acylation of 2-hydroxymethyl-2,3-dihydrobenzofurans catalysed by lipase from Pseudomonas cepacia (Amano PS) and total stereoselective synthesis of (−)-(R)-MEM-protected arthrographol
作者:S Ramadas、G.L.David Krupadanam
DOI:10.1016/s0957-4166(00)00302-5
日期:2000.8
Lipase Amano PS catalysed acylation of (+/-)-2-hydroxymethyl-2,3-dihydrobenzofurans using vinyl acetate as the acyl donor in n-hexane gave (-)-(R)-2-acetoxymethyl-2,3-dihydrobenzo and (+)-(S)-2-hydroxymethyl-2,3-dihydrobenzofurans in high enantiomeric excess. (-)-(R)-Acetate 18j is converted to (-)-(R)-MEM-protected arthrographol 22. (C) 2000 Published by Elsevier Science Ltd.
Light-Activated Regulation of Cofilin Dynamics Using a Photocaged Hydrogen Peroxide Generator
作者:Evan W. Miller、Nicolas Taulet、Carl S. Onak、Elizabeth J. New、Julie K. Lanselle、Gillian S. Smelick、Christopher J. Chang
DOI:10.1021/ja107783j
日期:2010.12.8
Hydrogen peroxide (H2O2) can exert diverse signaling and stress responses within living systems depending on its spatial and temporal dynamics. Here we report a new small-molecule probe for producing H2O2 on demand upon photoactivation and its application for optical regulation of cofilin-actin rod formation in living cells. This chemical method offers many potential opportunities for dissecting biological roles for H2O2 as well as remote control of cell behavior via H2O2-mediated pathways.
A thermally-stable enzyme detection assay that amplifies signal autonomously in water without assistance from biological reagents
作者:Kimy Yeung、Kyle M. Schmid、Scott T. Phillips
DOI:10.1039/c2cc36861g
日期:——
This Communication describes a thermally-stable small molecule and a corresponding assay strategy that autonomously amplifies a colorimetric signal when a specific enzyme biomarker is detected.