A1 Journal article (refereed)
Human HDL subclasses modulate energy metabolism in skeletal muscle cells (2024)
Lund, J., Lähteenmäki, E., Eklund, T., Bakke, H. G., Thoresen, G. H., Pirinen, E., Jauhiainen, M., Rustan, A. C., & Lehti, M. (2024). Human HDL subclasses modulate energy metabolism in skeletal muscle cells. Journal of Lipid Research, 65(1), Article 100481. https://doi.org/10.1016/j.jlr.2023.100481
JYU authors or editors
Publication details
All authors or editors: Lund, Jenny; Lähteenmäki, Emilia; Eklund, Tiia; Bakke, Hege G.; Thoresen, G. Hege; Pirinen, Eija; Jauhiainen, Matti; Rustan, Arild C.; Lehti, Maarit
Journal or series: Journal of Lipid Research
ISSN: 0022-2275
eISSN: 1539-7262
Publication year: 2024
Publication date: 24/11/2023
Volume: 65
Issue number: 1
Article number: 100481
Publisher: Elsevier
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1016/j.jlr.2023.100481
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/92559
Abstract
Differentiated mouse and primary human skeletal muscle myotubes were used to investigate the influences of human HDL2 and HDL3 on glucose and fatty uptake and oxidation. HDL-induced changes in lipid distribution and mRNA expression of genes related to energy substrate metabolism, mitochondrial function and HDL receptors were studied with human myotubes. Additionally, we examined the effects of apoA-I and discoidal, reconstituted HDL particles (d-rHDLs) on substrate metabolism.
In mouse myotubes, HDL subclasses strongly enhanced glycolysis upon high and low glucose concentrations. HDL3 caused a minor increase in ATP-linked respiration upon glucose conditioning but HDL2 improved complex I mediated mitochondrial respiration upon fatty acid treatment. In human myotubes, glucose metabolism was attenuated but fatty acid uptake and oxidation were markedly increased by both HDL subclasses, which also increased mRNA expression of genes related to fatty acid metabolism and HDL receptors. Finally, both HDL subclasses induced incorporation of oleic acid into different lipid classes.
These results, demonstrating that HDL subclasses enhance fatty acid oxidation in human myotubes but improve anaerobic metabolism in mouse myotubes, support the role of HDL as a circulating modulator of energy metabolism. Exact mechanisms and components of HDL causing the change, require further investigation.
Keywords: glucose; mitochondria; glucose metabolism; fatty acids; lipoproteins; metabolism
Free keywords: cellular respiration; substrate oxidation; glycolysis; oxidative phosphorylation; skeletal muscle myotubes; HDL subclasses; fatty acid/transport; glucose; lipoproteins/metabolism; mitochondria; lipoproteins/receptors
Contributing organizations
Ministry reporting: Yes
VIRTA submission year: 2023
Preliminary JUFO rating: 1