Cell-penetrating peptides, also known as CPP, have the ability to cross plasma membranes. Ever since the discovery of this ability, it has been exploited for a variety of applications, including delivering bioactive molecules to stop the actions of diseases producing cellular mechanisms.
Through the selective delivery of drugs into the target cells, it is possible to achieve improved drug distribution, as well as a significant reduction of dosing and toxicity. In this review, we will look at some of the challenges being encountered in this specific field of application, as well as some of the factors that may influence the efficacy of the delivery.
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