000867731 001__ 867731 000867731 005__ 20210130003847.0 000867731 0247_ $$2doi$$a10.3390/ijms20153712 000867731 0247_ $$2ISSN$$a1422-0067 000867731 0247_ $$2ISSN$$a1661-6596 000867731 0247_ $$2Handle$$a2128/23622 000867731 0247_ $$2altmetric$$aaltmetric:64283607 000867731 0247_ $$2pmid$$apmid:31362433 000867731 0247_ $$2WOS$$aWOS:000482383000105 000867731 037__ $$aFZJ-2019-06346 000867731 082__ $$a540 000867731 1001_ $$0P:(DE-HGF)0$$aRondelli$$b0$$eCorresponding author 000867731 245__ $$aMucin Thin Layers: A Model for Mucus-Covered Tissues 000867731 260__ $$aBasel$$bMolecular Diversity Preservation International$$c2019 000867731 3367_ $$2DRIVER$$aarticle 000867731 3367_ $$2DataCite$$aOutput Types/Journal article 000867731 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1586004280_29481 000867731 3367_ $$2BibTeX$$aARTICLE 000867731 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000867731 3367_ $$00$$2EndNote$$aJournal Article 000867731 520__ $$aThe fate of macromolecules of biological or pharmacological interest that enter the mucus barrier is a current field of investigation. Studies of the interaction between the main constituent of mucus, mucins, and molecules involved in topical transmucoidal drug or gene delivery is a prerequisite for nanomedicine design. We studied the interaction of mucin with the bio-inspired arginine-derived amphoteric polymer d,l-ARGO7 by applying complementary techniques. Small angle X-ray scattering in bulk unveiled the formation of hundreds of nanometer-sized clusters, phase separated from the mucin mesh. Quartz microbalance with dissipation and neutron reflectometry measurements on thin mucin layers deposited on silica supports highlighted the occurrence of polymer interaction with mucin on the molecular scale. Rinsing procedures on both experimental set ups showed that interaction induces alteration of the deposited hydrogel. We succeeded in building up a new significant model for epithelial tissues covered by mucus, obtaining the deposition of a mucin layer 20 Å thick on the top of a glycolipid enriched phospholipid single membrane, suitable to be investigated by neutron reflectometry. 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