Cited by 357Barrier Structure and Function StudiesDrug Transport and Resistance MechanismsDrug Solubulity and Delivery Systems

Tight junction modulation and its relationship to drug delivery

SALAMA, N, EDDINGTON, N, FASANO, A·2006·Advanced Drug Delivery Reviews

Abstract

In order for therapeutic agents to exert their pharmacological effects, they have to cross the biological membranes into the systemic circulation and reach the site of action. Drugs cross the membranes by one of two pathways; paracellular or transcellular. Most drugs are transported transcellularly depending on their physiocochemical properties, however the paracellular route is usually the main route of absorption for hydrophilic drugs (proteins, peptides, etc.). The paracellular pathway is governed by the tight junctions (TJs). The modulation of the TJs by absorption enhancers for paracellular drug transport enhancement and hence drug delivery improvement has been hampered for so many years by lack of comprehensive understanding of the structure and function of the TJs. The TJs are a multiple unit structure composed of multiprotein complex that affiliates with the underlying apical actomyosin ring. TJ proteins identified include transmembrane proteins; occludin and claudin, and cytoplasmic plaque proteins; ZO-1, ZO-2, ZO-3, cingulin, and 7H6. Among the new absorption enhancers that evolved in the past few years is Zonula Occludens toxin, Zot. In vivo and in vitro studies have shown that Zot and its biologically active fragment DeltaG could be effectively used to increase the transport/absorption of paracellular markers and low bioavailable drugs across the intestinal epithelium. Above all, the transient opening of the TJs by Zot suggests that it could be used as a novel approach for the safe drug delivery of therapeutic agents.

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Crossref · 10.1016/j.addr.2006.01.003

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Authors
SALAMA, N., EDDINGTON, N., & FASANO, A.
Affiliations
University of Maryland, Baltimore (US)
Corresponding author
FASANO, A
Venue
Advanced Drug Delivery Reviews
Publisher
Elsevier BV
Published
2006-04-20
Volume
58
Issue
1
Pages
15-28
ISSN
0169-409X (ISSN-L)
OpenAlex
W2153192347
Cited by
357
References
95
Citations by year
2026: 10 · 2025: 14 · 2024: 10 · 2023: 17 · 2022: 14 · 2021: 15 · 2020: 20 · 2019: 13 · 2018: 17 · 2017: 17 · 2016: 17 · 2015: 17 · 2014: 27 · 2013: 26 · 2012: 22
FWCI
12.93
Type
journal article
Language
en
Open access
closed
Locations
  • Advanced Drug Delivery Reviews (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Drug Solubulity and Delivery Systems
Keywords
tight junctions, absorption enhancers, zonula occludens toxin, zot, intestinal epithelium, occludin, claudins, ZO-1, ZO-2, ZO-3, cingulin, tight junction modulation, drug delivery
MeSH terms
Animals, Cholera Toxin, Pharmaceutical Preparations, Endotoxins, Humans, Intestinal Absorption, Drug Delivery Systems, Tight Junctions

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