Fluorous oligoarginines as supra-enhancers for intracellular and transdermal peptide delivery.

ABSTRACT: Peptides are increasingly recognized as important therapeutics due to their specificity and potency. However, their clinical application is often hindered by numerous barriers, including low bioavailability, poor cell membrane and tissue penetration. To address these limitations, we developed a library of fluorous penetrating peptides and identified fluorinated hexa-arginine (FR6) as a super-enhancer for cell and tissue penetration. FR6 markedly enhances the intracellular delivery of a variety of peptides by improving membrane permeability, facilitating their uptake across diverse cell types. It greatly improves the penetration of bioactive peptides in 3D tumor spheroids, allowing for improved therapeutic efficacy. More importantly, FR6 demonstrates remarkable potential for transdermal del

SUBMITTER: Rong G 

PROVIDER: S-EPMC12804165 | biostudies-literature | 2026 May

REPOSITORIES: biostudies-literature