Fluorogenic, Two-Photon-Triggered Photoclick Chemistry in Live Mammalian Cells
作者:Zhipeng Yu、Tymish Y. Ohulchanskyy、Peng An、Paras N. Prasad、Qing Lin
DOI:10.1021/ja407867a
日期:2013.11.13
The tetrazole-based photoclick chemistry has provided a powerful tool to image proteins in live cells. To extend photoclick chemistry to living organisms with improved spatiotemporal control, here we report the design of naphthalene-based tetrazoles that can be efficiently activated by two-photon excitation with a 700 nm femtosecond pulsed laser. A water-soluble, cell-permeable naphthalene-based tetrazole was identified that reacts with acrylamide with the effective two-photon cross-section for the cycloaddition reaction determined to be 3.8 GM. Furthermore, the use of this naphthalene-tetrazole for real-time, spatially controlled imaging of microtubules in live mammalian cells via the fluorogenic, two-photon-triggered photoclick chemistry was demonstrated.
Discovery of new photoactivatable diaryltetrazoles for photoclick chemistry via ‘scaffold hopping’
作者:Zhipeng Yu、Lok Yin Ho、Zhiyong Wang、Qing Lin
DOI:10.1016/j.bmcl.2011.04.087
日期:2011.9
We report the discovery of two long-wavelength (365 nm) photoactivatable diaryltetrazoles through screening a small library of diaryltetrazoles that were designed using a 'scaffold hopping' strategy. A naphthalene-derived tetrazole showed excellent reactivity in the photoinduced cycloaddition reaction with methyl methacrylate under 365 nm photoirradiation in acetonitrile PBS buffer mixture. Besides, the brightly fluorescent pyrazoline cycloadducts that were formed further increase the potential utility of these new diaryltetrazoles as 'photoclick' reagents and as reporters in biological studies. (C) 2011 Elsevier Ltd. All rights reserved.