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Mitochondrial uncoupler BAM15 ameliorates liver lipid metabolism disorders by activating the AMPK pathway
Zunhai Liu1, Wentao Wang1, Simeng Wang1
1College of Animal Science and Technology, Northwest A&F University, Yangling, China.
Abstract:
N5,N6-bis(2-Fluorophenyl)-[1,2,5]oxadiazolo[3,4-b]pyrazine-5,6-diamine (BAM15) is a recently identified mitochondrial uncoupler with antitumor, anti-inflammatory, antioxidant and antiobesity properties. Although it has been shown that BAM15 has a high targeting ability to the liver, its capacity to improve liver metabolic disorders and the underlying mechanisms are not well understood. This study examined how BAM15 works in high-fat-diet (HFD) induced obese mice. Our results showed that compared with 2,4-Dinitrophenol (DNP) and carbonyl cyanide 4-(trifluoromethoxy)phenylhydrazone (FCCP), BAM15 has a higher binding capacity and stronger activity in mediating proton uncoupling, and effectively promoted mitochondrial fusion, division, autophagy, and the tricarboxylic acid cycle. BAM15 improved hepatic lipid metabolism disorders by enhancing mitochondrial autophagy through activation of the 5'-AMP-activated protein kinase (AMPK) pathway. This indicates that BAM15 could be used to treat liver lipid metabolism issues and offers a solid theoretical foundation for managing lipid-related diseases.
Insights
N5,N6-bis(2-Fluorophenyl)-[1,2,5]oxadiazolo[3,4-b]pyrazine-5,6-diamine (BAM15), a mitochondrial uncoupler, effectively treats liver metabolic disorders. It enhances mitochondrial function and lipid metabolism by activating the AMPK pathway, offering a new therapeutic approach.
Area of Science:
- Biochemistry
- Cell Biology
- Metabolic Diseases
Background:
- Mitochondrial uncouplers are investigated for various therapeutic properties.
- N5,N6-bis(2-Fluorophenyl)-[1,2,5]oxadiazolo[3,4-b]pyrazine-5,6-diamine (BAM15) shows liver targeting but its role in liver metabolic disorders is unclear.
Purpose of the Study:
- To investigate the efficacy of BAM15 in improving high-fat-diet induced liver metabolic disorders.
- To elucidate the underlying mechanisms of BAM15 action in the liver.
Main Methods:
- Comparison of BAM15 with DNP and FCCP for binding capacity and proton uncoupling activity.
- Assessment of BAM15 effects on mitochondrial dynamics, autophagy, and the tricarboxylic acid cycle in obese mice.
- Investigation of the role of the AMPK pathway in BAM15-mediated improvements.
Main Results:
- BAM15 demonstrated superior binding capacity and proton uncoupling activity compared to DNP and FCCP.
- BAM15 promoted mitochondrial fusion, division, autophagy, and enhanced the tricarboxylic acid cycle.
- BAM15 treatment improved hepatic lipid metabolism disorders via enhanced mitochondrial autophagy, mediated by AMPK pathway activation.
Conclusions:
- BAM15 effectively ameliorates high-fat-diet induced liver metabolic disorders.
- BAM15 acts by enhancing mitochondrial autophagy through the AMPK pathway.
- BAM15 presents a promising therapeutic agent for liver lipid metabolism issues and related diseases.
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