A novel in vivo model for evaluating functional restoration of a tissue-engineered salivary gland

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dc.citation.firstpage456
dc.citation.issueNumber2
dc.citation.journalTitleThe Laryngoscope
dc.citation.lastpage461
dc.citation.volumeNumber124
dc.contributor.authorPradhan-Bhatt, Swati
dc.contributor.authorHarrington, Daniel Anton
dc.contributor.authorDuncan, Randall L.
dc.contributor.authorFarach-Carson, Mary C.
dc.contributor.authorJia, Xinqiao
dc.contributor.authorWitt, Robert L.
dc.date.accessioned2017-06-14T16:55:02Z
dc.date.available2017-06-14T16:55:02Z
dc.date.issued2014
dc.description.abstractObjectives/Hypothesis: To create a novel model for development of a tissue-engineered salivary gland from human salivary gland cells that retains progenitor cell markers useful for treatment of radiation-induced xerostomia. Study Design: A three-dimensional (3D) hyaluronic acid (HA)-based hydrogel scaffold was used to encapsulate primary human salivary gland cells and to obtain organized acini-like spheroids. Hydrogels were implanted into rat models, and cell viability and receptor expression were evaluated. Methods: A parotid gland surgical resection model for xenografting was developed. Salivary cells loaded in HA hydrogels formed spheroids and in vitro were implanted in the three-fourths resected parotid bed of athymic rats. Implants were removed after 1 week and analyzed for spheroid viability and phenotype retention. Results: Spheroids in 3D stained positive for HA receptors CD168/RHAMM and CD44, which is also a progenitor cell marker. The parotid gland three-fourths resection model was well-tolerated by rodent hosts, and the salivary cell/hydrogel scaffolds were adherent to the remaining parotid gland, with no obvious signs of inflammation. A majority of human cells in the extracted hydrogels demonstrated robust expression of CD44. Conclusions: A 3D HA-based hydrogel scaffold that supported long-term culture of salivary gland cells into organized spheroids was established. An in vivo salivary gland resection model was developed that allowed for integration of the 3D HA hydrogel scaffold with the existing glandular parenchyma. The expression of CD44 among salivary cultures may partially explain their regenerative potential, and the expression of CD168/RHAMM along with CD44 may aid the development of these 3D spheroids into regenerated salivary glands.
dc.identifier.citationPradhan-Bhatt, Swati, Harrington, Daniel Anton, Duncan, Randall L., et al.. "A novel in vivo model for evaluating functional restoration of a tissue-engineered salivary gland." <i>The Laryngoscope,</i> 124, no. 2 (2014) Wiley: 456-461. http://dx.doi.org/10.1002/lary.24297.
dc.identifier.doihttp://dx.doi.org/10.1002/lary.24297
dc.identifier.urihttps://hdl.handle.net/1911/94841
dc.language.isoeng
dc.publisherWiley
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Wiley.
dc.subject.keywordBioartificial organ
dc.subject.keywordhyaluronic acid receptors
dc.subject.keywordhyaluronic acid-based hydrogels
dc.subject.keywordprogenitor cells
dc.subject.keywordregeneration
dc.subject.keywordsalivary gland
dc.subject.keywordthree-dimensional cell culture
dc.subject.keywordtissue engineering
dc.titleA novel in vivo model for evaluating functional restoration of a tissue-engineered salivary gland
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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