Intracellular Delivery of Peptidyl Ligands by Reversible Cyclization: Discovery of a PDZ Domain Inhibitor that Rescues CFTR Activity.

Intracellular Delivery of Peptidyl Ligands by Reversible Cyclization: Discovery of a PDZ Domain Inhibitor that Rescues CFTR Activity.
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DOI:
10.1002/anie.201411594
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发表时间:
2015-05-11
影响因子:
16.6
通讯作者:
Pei, Dehua
Pei, Dehua
中科院分区:
化学1区
文献类型:
--
作者:
Qian, Ziqing;Xu, Xiaohua;Amacher, Jeanine F.;Madden, Dean R.;Cormet-Boyaka, Estelle;Pei, Dehua

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We report a general strategy for intracellular delivery of linear peptidyl ligands by fusing them with a cell-penetrating peptide and cyclizing the fusion peptides through a disulfide bond. The resulting cyclic peptides are cell permeable and have improved proteolytic stability. Once inside the cell, the disulfide bond is reduced to produce linear, biologically active peptides. This strategy was applied to generate a cell-permeable peptide substrate for real-time detection of intracellular caspase activities during apoptosis and a CAL-PDZ domain inhibitor for potential treatment of cystic fibrosis.
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