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| Pàgina inicial > Articles > Articles publicats > Trans-Mediated, Cis-Inhibited Paradoxal Activity of Clostridium perfringens Enterotoxin (c-CPE) in Modulating Epithelial Permeability |
| Data: | 2025 |
| Resum: | In the context of transdermal delivery, favoring the drug permeability of epithelia through convenient formulations would open new opportunities for local versus systemic drug delivery, envisaging higher patient comfort and an enhanced therapeutic effect. Ligands of tight junctions are interesting agents that enhance epithelial permeability by relaxing the protein complexes that form them. The C-terminal domain of Clostridium perfringens enterotoxin (c-CPE), which binds claudins, one of the tight junction (TJ) components, has been explored here as a functional domain in modular recombinant proteins, to evaluate its ability to self-promote its paracellular epithelial passage in a Caco-2 cell monolayer model. c-CPE-containing fusion proteins bind cells in the absence of internalization and cytotoxicity and support the passage, in trans, of other fusion proteins devoid of c-CPE. However, c-CPE-carrying proteins fail to cross the epithelia by themselves, probably because their affinity for TJs immobilizes them in the intercellular space. Therefore, while recombinant c-CPE versions have been here confirmed as convenient epithelial-permeabilizing agents, a paradoxical behavior has been observed where this effect is only successful when applied in trans, specifically on entities that lack c-CPE. Then, c-CPE itself inhibits the paracellular mobility of carrier molecules, not being suited as a self-driver (in c-CPE-drug complexes) for drug delivery through epithelia. |
| Ajuts: | Agencia Estatal de Investigación PID2020-116174RB-I00 Agencia Estatal de Investigación PID2019-105416RB-I00 Agencia Estatal de Investigación PDC2022-133858-I00 Agencia Estatal de Investigación PID2022-1368450-OB-10 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00092 Instituto de Salud Carlos III PI20/00400 Instituto de Salud Carlos III PI23/00318 Instituto de Salud Carlos III PI21/00150 Instituto de Salud Carlos III CP19/00028 Instituto de Salud Carlos III CB06/01/0014 Instituto de Salud Carlos III CB06/01/1031 |
| Nota: | Altres ajuts: acords transformatius de la UAB |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Recombinant protein ; Nanoparticles ; Drug delivery ; Claudin ; CCPE ; Transactivity |
| Publicat a: | Molecular pharmaceutics, Vol. 22, Issue 4 (April 2025) , p. 1973-1982, ISSN 1543-8392 |
10 p, 7.8 MB |