Dodecylmaltoside Modulates Bicellular Tight Junction Contacts To Promote Enhanced Permeability

Intestinal permeation enhancers are a crucial component of many oral formulations, without which many drugs would show an insufficient absorption in the gut. The present study sought to provide a better understanding of the molecular interaction of such absorption enhancers with the intestine, by investigating the effect of the surfactant-like permeation enhancer dodecylmaltoside (DDM) on Caco-2 cells. The extent to which the action of DDM is apportioned between the para- and transcellular routes was addressed by examining the transport of relevant marker compounds ([3H]-mannitol and [3H]-propranolol, respectively). In the case of [3H]-mannitol, a robust permeation enhancement was achieved with 0.5 mM DDM (∼6-fold), whereas little effect was seen on the permeation of [3H]-propranolol. Concomitantly measured TEER values revealed a rapid onset of action of DDM with a swift recovery and complete restitution (>90%) within 4 h after washout. To localize the site(s) of action of DDM at the absorptive surface of Caco-2 cells, sulfo-NHS-SS-biotin, a membrane-impermeable compound, was applied apically. In the presence of 0.5 mM DDM, translocated biotin was found to be accumulated toward bicellular contacts, whereas no biotin permeation was observed in untreated control cells. Western blot analysis of DDM-treated and untreated Caco-2 cells revealed an interaction of DDM with specific tight junction associated proteins, resulting in a reduction of claudin-3 and -4 and also occludin, as well as a depletion of claudin-2 from lipid rafts. Collectively, the results presented provide a more in depth understanding of the molecular mechanism(s) underlying the permeation-enhancing actions of DDM.

Medienart:

E-Artikel

Erscheinungsjahr:

2017

Erschienen:

2017

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Molecular pharmaceutics - 14(2017), 12 vom: 04. Dez., Seite 4734-4740

Sprache:

Englisch

Beteiligte Personen:

Gradauer, K [VerfasserIn]
Iida, M [VerfasserIn]
Watari, A [VerfasserIn]
Kataoka, M [VerfasserIn]
Yamashita, S [VerfasserIn]
Kondoh, M [VerfasserIn]
Buckley, S T [VerfasserIn]

Links:

Volltext

Themen:

3OWL53L36A
69227-93-6
9Y8NXQ24VQ
Claudins
Detergents
Dodecyl maltoside
Glucosides
Journal Article
Lipid rafts
Maltoside
Mannitol
Permeation enhancement
Propranolol
Tight junctions

Anmerkungen:

Date Completed 27.07.2018

Date Revised 25.10.2018

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1021/acs.molpharmaceut.7b00297

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM276543939