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Published on: February 9, 2022
Differential lipolytic regulation in human embryonic stem cell-derived adipocytes
Vanessa van Harmelen1, Gaby Aström, Amy Strömberg
1Department of Medicine, M61, Karolinska University Hospital, Huddinge 141 86, Stockholm, Sweden. vanessa.van.harmelen@ki.se
Obesity (Silver Spring, Md.)
|April 12, 2007
Summary
Human embryonic stem cell-derived adipocytes exhibit functional differences from mature fat cells. While expressing key genes, they show altered lipolytic responses, particularly to atrial natriuretic peptide and catecholamines.
Area of Science:
- Stem cell biology
- Adipocyte differentiation
- Cellular metabolism
Background:
- Human embryonic stem cells (hESCs) hold promise for regenerative medicine.
- Previous studies differentiated hESCs into adipocytes, showing morphological and gene expression similarities to mature cells.
- Functional lipolytic assessment of hESC-derived adipocytes remained incomplete.
Purpose of the Study:
- To functionally characterize adipogenic differentiation of hESCs.
- To assess the lipolytic response of hESC-derived adipocytes.
- To compare the functional properties of hESC-derived adipocytes with primary human adipocytes.
Main Methods:
- hESCs were differentiated into adipocytes via embryonic body formation.
- Adipocyte-specific gene expression, protein secretion (leptin/adiponectin), and lipolysis were measured.
- Lipolytic responses to beta-adrenergic agonists and atrial natriuretic peptide were evaluated.
Main Results:
- hESC-derived adipocytes expressed major lipolytic cascade genes.
- A minimal lipolytic response to beta-adrenergic agonists was observed, unlike primary adipocytes.
- A significant lipolytic response to atrial natriuretic peptide was detected.
Conclusions:
- hESC-derived adipocytes possess distinct functional characteristics compared to mature adipocytes.
- These functional differences may stem from their early developmental origins.
- hESC-derived adipocytes exhibit a differential response to atrial natriuretic peptide and catecholamines.
