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Related Experiment Video

Updated: Sep 1, 2025

Fluorescent Leakage Assay to Investigate Membrane Destabilization by Cell-Penetrating Peptide
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A Second Life for MAP, a Model Amphipathic Peptide.

Sara Silva1,2,3, Kaido Kurrikoff4, Ülo Langel4,5

  • 1OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal.

International Journal of Molecular Sciences
|August 12, 2022
PubMed
Summary

Cell-penetrating peptides (CPPs) like MAP efficiently deliver various cargoes into cells. This review explores MAP's structure, cellular activity, and innovative therapeutic applications, including drug delivery and chemotherapy.

Keywords:
CNScell-penetrating peptidesdelivery systemdrug repurposingmodel amphipathic peptidenanoparticlesoncology

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Drug Delivery Systems

Background:

  • Cell-penetrating peptides (CPPs) facilitate intracellular transport of diverse molecules.
  • CPPs offer therapeutic potential for enhancing drug concentrations in tissues and cells.
  • MAP is a model amphipathic peptide with an alpha-helical structure.

Purpose of the Study:

  • To review the unique molecular structure of the cell-penetrating peptide MAP.
  • To elucidate how MAP's structure dictates its cellular activity.
  • To discuss innovative applications and future directions for MAP in therapeutics.

Main Methods:

  • Literature review of studies on cell-penetrating peptides, focusing on MAP.
  • Analysis of MAP's amphipathic alpha-helical structure and its components (alanines, leucines, lysines).
  • Examination of in silico studies, drug repurposing, and nanoparticle-based delivery systems involving MAP.

Main Results:

  • MAP demonstrates efficient translocation of oligonucleotides, peptides, and small proteins.
  • Innovative applications include in silico receptor modeling, CNS and oncology drug repurposing, and dual-drug delivery systems.
  • MAP-based strategies aim for effective and less toxic chemotherapy.

Conclusions:

  • MAP's unique molecular structure is key to its cellular activity and broad cargo-carrying capacity.
  • MAP holds significant therapeutic relevance, with ongoing clinical trials and innovative applications.
  • Future research directions involve advanced MAP-linked vehicles for enhanced drug delivery and reduced toxicity.