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Committing embryonic stem cells to differentiate into thyrocyte-like cells in vitro
Reigh-Yi Lin1, Atsushi Kubo, Gordon M Keller
1Division of Endocrinology, Diabetes, and Bone Diseases, Department of Medicine, Mount Sinai School of Medicine, New York, New York 10029, USA. reigh-yi.lin@mssm.edu
Endocrinology
|May 15, 2003
Summary
Mouse embryonic stem cells can differentiate into thyrocyte-like cells, recapitulating thyroid development. This provides a model for studying thyroid diseases and developing cell therapies.
Area of Science:
- Developmental Biology
- Stem Cell Biology
- Endocrinology
Background:
- Thyrocyte derivation is crucial for studying thyroid embryogenesis.
- Generating a clinical source of thyrocytes is vital for genetic manipulation and cell transplantation.
Purpose of the Study:
- To establish a model system for deriving thyrocyte-like cells from mouse embryonic stem cells.
- To investigate the recapitulation of thyroid developmental programs in vitro.
Main Methods:
- Differentiation of mouse embryonic stem cells into embryoid bodies (EBs).
- Analysis of gene expression (PAX8, Na+/I- symporter, thyroperoxidase, thyroglobulin, TSHR, TTF2).
- Immunofluorescent analysis for TSHR expression and functional assays for TSH-stimulated cAMP generation.
Main Results:
- 6-day-old EBs expressed key thyroid-associated genes, including PAX8 and TSHR.
- TSH was essential for maintaining PAX8 and TSHR gene expression during differentiation.
- Thyroid-specific function, like TSH-stimulated cAMP generation, was preserved in the derived cells.
Conclusions:
- Mouse embryonic stem cell-derived embryoid bodies successfully recapitulate thyrocyte developmental programs.
- This model system is valuable for studying thyrocyte developmental diseases.
- The findings contribute to developing thyroid hormone-secreting cell lines for therapeutic applications.