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Culture of Macrophage Colony-stimulating Factor Differentiated Human Monocyte-derived Macrophages
Published on: June 30, 2016
Data on autophagy markers in human macrophages exposed to oxLDL and growth differentiation factor-15
Kathrin Ackermann1, Gabriel A Bonaterra1, Ralf Kinscherf1
1Institute for Anatomy and Cell Biology, Department of Medical Cell Biology, Philipps-University of Marburg, 35032 Marburg, Germany.
Abstract:
Growth differentiation factor-15 (GDF-15) is a member of the TGF-β superfamily, identical to MΦ-inhibitory cytokine-1 (MIC-1). GDF-15 is associated with e.g. cardiovascular disease, inflammation and development of atherosclerosis and is highly expressed in macrophages (MΦ) of atherosclerotic lesions. Moreover, there exists an indication for the involvement of oxidized-low density lipoprotein (oxLDL) uptake and autophagic processes by MΦ regarding arteriosclerotic progression. Thus, we were interested to investigate a potential regulatory effect of GDF-15 on autophagy signaling pathway in human MΦ during foam cell formation. Here, we present western blot data of ATG5, ATG12/ATG5-complex and p62 regarding the GDF-15 concentration. For further interpretation of the data presented in this article, please see the research article "Growth differentiation factor-15 regulates oxLDL-induced lipid homeostasis and autophagy in human macrophages" [1].
Insights
Growth differentiation factor-15 (GDF-15) influences autophagy in human macrophages during foam cell formation. This cytokine impacts lipid homeostasis and may play a role in atherosclerosis progression.
Area of Science:
- Molecular Biology
- Immunology
- Cardiovascular Research
Background:
- Growth differentiation factor-15 (GDF-15), also known as macrophage-inhibitory cytokine-1 (MIC-1), is linked to cardiovascular disease, inflammation, and atherosclerosis.
- Macrophages (MΦ) in atherosclerotic lesions highly express GDF-15.
- Macrophage uptake of oxidized-low density lipoprotein (oxLDL) and autophagic processes are implicated in arteriosclerotic progression.
Purpose of the Study:
- To investigate the regulatory effect of GDF-15 on the autophagy signaling pathway in human macrophages.
- To explore GDF-15's role in foam cell formation and its relation to oxLDL uptake and autophagy.
Main Methods:
- Western blot analysis was employed to assess key autophagy markers.
- Levels of ATG5, ATG12/ATG5-complex, and p62 were measured in relation to GDF-15 concentration.
Main Results:
- Western blot data demonstrated changes in ATG5, ATG12/ATG5-complex, and p62 expression in response to GDF-15.
- These findings suggest GDF-15 modulates autophagy signaling in human macrophages.
Conclusions:
- GDF-15 plays a regulatory role in the autophagy signaling pathway within human macrophages.
- The study provides insights into GDF-15's involvement in macrophage function relevant to atherosclerosis.
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