Modelling acute glucocorticoid transcriptome response in human embryonic stem cell derived neural cultures

Area of Science:

• Neuroscience
• Stem Cell Biology
• Molecular Endocrinology

Background:

• Human embryonic stem cells (hESCs) offer a model for studying neural development.
• Glucocorticoids play crucial roles in neural differentiation and function.
• Understanding acute glucocorticoid signaling in neural cells is vital.

Purpose of the Study:

• To characterize the acute glucocorticoid transcriptome response in hESC-derived neural cultures.
• To confirm glucocorticoid receptor (GR) and FKBP5 expression in these cultures.
• To identify genes regulated by acute glucocorticoid exposure.

Main Methods:

• Differentiated hESC lines (H9, H1) into neurons and astrocytes.
• Confirmed expression of glucocorticoid receptor (GR) and FKBP5.
• Treated cultures with dexamethasone (Dex) and analyzed gene expression via transcriptomics.

Main Results:

• Dexamethasone induced dose-dependent upregulation of FKBP5 and PER1.
• FKBP5 protein levels increased after 12-hour dexamethasone exposure.
• FKBP5 was the most highly upregulated gene; 30 additional differentially expressed genes were identified common to both hESC lines.

Conclusions:

• hESC-derived neural cultures exhibit a robust acute glucocorticoid response.
• FKBP5 is a key transcriptional target of acute glucocorticoid signaling in these neural models.
• This study provides a foundation for investigating glucocorticoid effects on human neural development.