Serum-induced differentiation of human meibomian gland epithelial cells

David A. Sullivan, Yang Liu, Wendy R. Kam, Juan Ding, Karin M. Green, Scott A. Shaffer, Mark P. Hatton, Shaohui Liu

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

PURPOSE. We hypothesize that culturing immortalized human meibomian gland epithelial cells in serum-containing medium will induce their differentiation. The purpose of this investigation was to begin to test our hypothesis, and explore the impact of serum on gene expression and lipid accumulation in human meibomian gland epithelial cells. METHODS. Immortalized and primary human meibomian gland epithelial cells were cultured in the presence or absence of serum. Cells were evaluated for lysosome and lipid accumulation, polar and neutral lipid profiles, and gene expression. RESULTS. Our results support our hypothesis that serum stimulates the differentiation of human meibomian gland epithelial cells. This serum-induced effect is associated with a significant increase in the expression of genes linked to cell differentiation, epithelium development, the endoplasmic reticulum, Golgi apparatus, vesicles, and lysosomes, and a significant decrease in gene activity related to the cell cycle, mitochondria, ribosomes, and translation. These cellular responses are accompanied by an accumulation of lipids within lysosomes, as well as alterations in the fatty acid content of polar and nonpolar lipids. Of particular importance, our results show that the molecular and biochemical changes of immortalized human meibomian gland epithelial cells during differentiation are analogous to those of primary cells. CONCLUSIONS. Overall, our findings indicate that immortalized human meibomian gland epithelial cells may serve as an ideal preclinical model to identify factors that control cellular differentiation in the meibomian gland.

Original languageEnglish (US)
Pages (from-to)3866-3877
Number of pages12
JournalInvestigative Ophthalmology and Visual Science
Volume55
Issue number6
DOIs
StatePublished - Jun 19 2014
Externally publishedYes

Keywords

  • Differentiation
  • Epithelial cells
  • Gene expression
  • Lipids
  • Meibomian gland

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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  • Cite this

    Sullivan, D. A., Liu, Y., Kam, W. R., Ding, J., Green, K. M., Shaffer, S. A., Hatton, M. P., & Liu, S. (2014). Serum-induced differentiation of human meibomian gland epithelial cells. Investigative Ophthalmology and Visual Science, 55(6), 3866-3877. https://doi.org/10.1167/iovs.13-13407