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Regulation of myoepithelial differentiation.
Renee F Thiemann1, Scott Varney2, Nicholas Moskwa3
1Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, New York, United States of America.
Plos One
|May 26, 2022
Summary
Researchers identified TAZ signaling as crucial for myoepithelial cell differentiation in salivary glands. This finding could aid in developing new salivary gland regeneration therapies after cancer treatment.
Area of Science:
- Cell Biology
- Regenerative Medicine
- Cancer Research
Background:
- Radiation therapy for head and neck cancers can permanently damage salivary glands.
- Current regenerative efforts focus on acinar cells, neglecting the critical role of myoepithelial cells.
- Mechanisms regulating myoepithelial cell differentiation remain poorly understood.
Purpose of the Study:
- To investigate the mechanisms regulating myoepithelial cell differentiation in salivary glands.
- To explore the role of TAZ signaling in salivary gland epithelial cell fate determination.
Main Methods:
- Utilized mSG-PAC1 murine salivary gland epithelial cells in an in vitro model.
- Cultured cells under varying media conditions to induce phenotypic plasticity.
- Employed microarray, gene-set enrichment analysis, immunocytochemistry, and siRNA to assess gene and protein expression.
Main Results:
- mSG-PAC1 spheroids demonstrated plasticity between pro-acinar and myoepithelial cell fates.
- TAZ expression correlated with myoepithelial marker alpha-SMA in differentiating cells and spheroids.
- Knockdown of TAZ using siRNA reduced the expression of myoepithelial markers.
Conclusions:
- TAZ signaling plays a significant role in the differentiation of salivary gland myoepithelial cells.
- This study provides a novel in vitro model for studying myoepithelial differentiation.
- Findings suggest TAZ as a potential therapeutic target for salivary gland regeneration.
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