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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Tjoe, Steven Kaminski, Henry J. Leahy, Patrick Kusner, Linda L. Young, Andrew |
| Description | Country affiliation: United States Author Affiliation: Kusner LL ( Department of Ophthalmology, Saint Louis University, St. Louis, Missouri 63104, USA. lkusner@slu.edu) |
| Abstract | PURPOSE: Extraocular muscle (EOM) has a distinct skeletal muscle phenotype. The hypothesis for the study was that fibroblasts support the unique EOM phenotype and that perimysial fibroblasts derived from EOM have properties that distinguish them from fibroblasts derived from other skeletal muscle. METHODS: Perimysial fibroblasts from leg muscle (LM-Fibro) and EOM (EOM-Fibro) of mice were derived and maintained in culture. EOM- and LM-Fibro were assessed morphologically and for vimentin, smooth muscle actin, and Thy-1 immunoreactivity. DNA microarray analysis was performed on LM- and EOM-Fibro grown in conditions that support myoblast differentiation. To assess trophic interactions, co-cultures of myoblasts from established cell lines, CL-EOM and CL-LM with, EOM- or LM-Fibro were performed in direct contact and in a permeable filter support culture. The degree of myotube maturation was assessed by the percentage of myotubes with more than three myonuclei per myotube. RESULTS: EOM- and LM-Fibro cells exhibited distinct morphologies. Both cell types proliferated as a monolayer and expressed vimentin. Fifty-five percent (SD 4.4%) of EOM-Fibro were Thy-1 positive compared with only 24% (SD 4.4%) of LM-Fibro. DNA microarray analysis demonstrated differential expression of structural, immune response, and metabolism-related genes between EOM- and LM-Fibro. Co-cultures demonstrated that mature myotube formation in EOM-derived cell lines was supported to a greater extent by EOM-Fibro than by LM-Fibro, compared with CL-EOM grown with LM-Fibro. CONCLUSIONS: Fibroblasts from EOM demonstrate distinct properties that distinguish them from leg muscle-derived fibroblasts. The distinct properties of EOM-Fibro may support the unique EOM phenotype and contribute to their differential involvement in disease. |
| ISSN | 01460404 |
| e-ISSN | 15525783 |
| DOI | 10.1167/iovs.08-2857 |
| Journal | Investigative Opthalmology & Visual Science |
| Issue Number | 1 |
| Volume Number | 51 |
| Language | English |
| Publisher | Association for Research in Vision and Ophthalmology |
| Publisher Date | 2010-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Fibroblasts Cytology Muscle Fibers, Skeletal Oculomotor Muscles Actins Metabolism Animals Antigens, Thy-1 Cell Differentiation Cells, Cultured Coculture Techniques Flow Cytometry Fluorescent Antibody Technique, Indirect Gene Expression Profiling Hindlimb Mice Mice, Inbred C57bl Myoblasts Oligonucleotide Array Sequence Analysis Polymerase Chain Reaction Vimentin Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Ophthalmology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ophthalmology Sensory Systems Cellular and Molecular Neuroscience |
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