4.6 Article

Cell-permeable peptide-based delivery vehicles useful for subcellular targeting and beyond

Journal

CELLULAR SIGNALLING
Volume 109, Issue -, Pages -

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.cellsig.2023.110796

Keywords

Cell -penetrating peptide; Subcellular targeting; Organelles; Protein -protein interactions; Drug delivery; Peptide -drug conjugates

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Personal medicine aims to tailor diagnostics and treatments, especially in targeting intracellular sites of action. Peptides are being explored as delivery vehicles that can overcome the cell membrane and achieve the final intracellular destination. These tools allow modulation of a drug's pharmacological properties without compromising its biological activity, making them valuable for targeting protein-protein interactions (PPIs), a growing therapeutic focus. This review provides an update on recent advances in cell-permeable peptides targeting subcellular destinations, including chimeric peptide probes and peptides with inherent cell-permeability that are utilized in PPI targeting.
Personal medicine aims to provide tailor-made diagnostics and treatments and has been emerged as a promising but challenging strategy during the last years. This includes the active delivery and localization of a therapeutic compound to a targeted site of action within a cell. An example being targeting the interference of a distinct protein-protein interaction (PPI) within the cell nucleus, mitochondria or other subcellular location. Therefore, not only the cell membrane has to be overcome but also the final intracellular destination has to be reached. One approach which fulfills both requirements is to use short peptide sequences that are able to translocate into cells as targeting and delivery vehicles. In fact, recent progress in this field demonstrates how these tools can modulate the pharmacological parameters of a drug without compromising its biological activity. Beside classical targets that are addressed by various small molecule drugs such as receptors, enzymes, or ion channels, PPIs have received increasing attention as potential therapeutic targets. Within this review, we will provide a recent update on cell-permeable peptides targeting subcellular destinations. We include chimeric peptide probes that combine cell-penetrating peptides (CPPs) and a targeting sequence, as well peptides having intrinsic cell-permeability and which are often used to target PPIs.

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