Journal
DRUG DISCOVERY TODAY
Volume 17, Issue 15-16, Pages 850-860Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.drudis.2012.03.002
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With more than ten new FDA approvals since 2001, peptides are emerging as an important therapeutic alternative to small molecules. However, unlike small molecules, peptides on the market today are limited to extracellular targets. By contrast, cell-penetrating peptides (CPPs) can target intracellular proteins and also carry other cargoes (e.g. other peptides, small molecules or proteins) into the cell, thus offering great potential as future therapeutics. In this review I present a classification scheme for CPPs based on their physical-chemical properties and origin, and! provide a general framework for understanding and discovering new CPPs.
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