Related Experiment Video
Updated: Jul 13, 2026
08:28
Acyl-PEGyl Exchange Gel Shift Assay for Quantitative Determination of Palmitoylation of Brain Membrane Proteins
Published on: March 29, 2020
Identification of palmitate-regulated genes in HepG2 cells by applying microarray analysis.
Christina Vock1, Mareike Gleissner, Maja Klapper
1Molecular Nutrition, Institute of Human Nutrition and Food Research, Christian-Albrechts-University of Kiel, Heinrich-Hecht-Platz 10, D-24118 Kiel, Germany.
Biochimica Et Biophysica Acta
|July 31, 2007
Summary
Low concentrations of palmitate, a common dietary saturated fatty acid, significantly alter gene expression in human liver cells. This study identified eleven responsive genes, including those linked to metabolic syndrome development.
Area of Science:
- Molecular Biology
- Genetics
- Metabolic Research
Background:
- Palmitate is the most abundant dietary saturated fatty acid and is synthesized endogenously.
- Understanding palmitate's role in gene regulation is crucial for metabolic health.
- HepG2 cells provide a relevant model for studying liver fatty acid metabolism.
Purpose of the Study:
- To identify genes regulated by low physiological concentrations of palmitate.
- To investigate the transcriptional mechanisms underlying palmitate-induced gene expression changes.
Main Methods:
- Whole genome mRNA expression profiling using human hepatoma HepG2 cells.
- Statistical analysis (permutational t-test) to identify significantly regulated genes.
- In-silico promoter analysis to identify common regulatory factors.
Main Results:
- Eleven genes were significantly regulated by 50 microM palmitate.
- Decreased expression of five metallothioneins was observed.
- Increased expression of plasminogen activator inhibitor-1 and insulin-like growth factor II was noted.
- Common transcriptional regulation by erythroid kruppel-like factor and zinc binding proteins was identified.
Conclusions:
- Low physiological palmitate concentrations induce significant changes in the expression of highly responsive genes.
- Palmitate influences genes involved in metabolic syndrome pathways.
- Erythroid kruppel-like factor and zinc binding proteins are key regulators of palmitate-responsive genes.
