Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 130, Issue 31, Pages 10064-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja803380a
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Funding
- NCI NIH HHS [R01 CA083831-08, R01 CA083831, R01-CA83831] Funding Source: Medline
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The use of endocytic uptake pathways to deliver poorly permeable molecules into mammalian cells is often plagued by entrapment and degradation of material in late endosomes and lysosomes. As a strategy to prevent the exposure of cargo to these highly hydrolytic membrane-sealed compartments, we synthesized derivatives of the membrane anchor N-alkyl-3 beta-cholesterylamine that selectively target linked compounds to less hydrolytic early/recycling endosomes. By targeting a pH-dependent membrane-lytic dodecapeptide and dislufide-linked flurophore to these compartments in Chinese hamster ovary cells or Jurkat lymphocytes, membranes of early-recycling endosomes were selectively disrupted, resulting in cleavage of the disulphide and escape of the fluorophore into cytosol and nucleus with low toxicity. The ability os appropriately designed N-alkyl-3 beta-cholesterylamines to deliver cargo into and release dislufide-linked cargo from relatively nonhydrolytic early/recycling endosomes may be useful for the delivery of a variety of sensitive molecules into living mammalian cells.
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