Journal
DRUG DISCOVERY TODAY
Volume 9, Issue 9, Pages 395-402Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S1359-6446(04)03042-9
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A novel carrier system that originates from membrane shuttling proteins such as the Drosophila homeobox protein Antennapedia, the HIV-1 transcriptional factor TAT and VP22 from HSV-1 has advantages for targeted delivery compared with standard translocation techniques. This transport system is mediated by so-called cell-penetrating peptides, which consist of short peptide sequences that rapidly translocate large molecules into the cell interior in a seemingly energy- and receptor-independent manner. Cell-penetrating peptides have low toxicity and a high yield of delivery and in the future might become a widely used tool in the field of gene regulation.
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