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Lacrimal Gland Inflammation Deregulates Extracellular Matrix Remodeling and Alters Molecular Signature of Epithelial Stem/Progenitor Cells.
- Source :
-
Investigative ophthalmology & visual science [Invest Ophthalmol Vis Sci] 2015 Dec; Vol. 56 (13), pp. 8392-402. - Publication Year :
- 2015
-
Abstract
- Purpose: The adult lacrimal gland (LG) is highly regenerative and is able to repair itself even after substantial damage; however, this ability to regenerate is lost with the development of dry eye conditions in chronically inflamed LGs.This study compares changes in the cell adhesion and cell matrix molecules and stem cell transcription factors in the LGs of healthy mice and of two mouse models of Sjögren's syndrome: nonobese diabetic (NOD) and MRL-lpr/lpr (MRL/lpr) mice during the early stage of inflammation.<br />Methods: The LGs from 12- to 13-week-old female MRL/lpr and male NOD mice along with their respective control strains were harvested and divided into three pieces and processed for quantitative (q) RT-PCR and qRT-PCR Arrays, histology, immunohistochemistry, and Western blotting.<br />Results: The extracellular matrix (ECM) and adhesion molecules RT2-PCR array combined with protein expression data revealed changes in the expression of integrins, matrix metalloproteinases, and other molecules, which are associated largely with invasion, attachment, and expansion of the lymphocytic cells, whereas changes in the stem cell transcription factors revealed substantial decrease in expression of transcription factors associated with epithelial stem/progenitor cell lineage.<br />Conclusions: We concluded that the expression of several important ECM components is significantly deregulated in the LG of two murine models of Sjögren's syndrome, suggesting an alteration of the epithelial stem/progenitor cell niche. This may result in profound effects on localization, activation, proliferation, and differentiation of the LG stem/progenitor cells and, therefore, LG regeneration.
- Subjects :
- Animals
Blotting, Western
Dacryocystitis pathology
Disease Models, Animal
Epithelial Cells cytology
Female
Immunohistochemistry
Lacrimal Apparatus pathology
Male
Mice
Mice, Inbred BALB C
Mice, Inbred MRL lpr
Stem Cells cytology
Dacryocystitis metabolism
Epithelial Cells metabolism
Extracellular Matrix metabolism
Lacrimal Apparatus metabolism
Stem Cells metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1552-5783
- Volume :
- 56
- Issue :
- 13
- Database :
- MEDLINE
- Journal :
- Investigative ophthalmology & visual science
- Publication Type :
- Academic Journal
- Accession number :
- 26747770
- Full Text :
- https://doi.org/10.1167/iovs.15-17477