Abstract
The nonsteroidal anti-inflammatory drug (NSAID) ketoprofen is commonly used as a pain reliever, but its role in mediating the energy metabolism in lipids is unclear. This paper reports for the first time the critical role of ketoprofen in ameliorating white fat browning and alleviating diet-induced obesity. The effects of ketoprofen were evaluated using C57BL/6 mice fed a high fat diet and the expression levels of the target genes and proteins in the lipid metabolisms were determined by quantitative real-time PCR, immunoblot analysis, histopathology study, immunofluorescence, and molecular docking techniques. Ketoprofen induced browning in cultured 3T3-L1 white adipocytes and inguinal white adipose tissue by increasing the expression of core fat browning marker proteins as well as beige-specific genes through COX-2 activation. Ketoprofen also led to the robust activation of brown adipocytes and enhanced brown fat adipogenesis. In addition, ketoprofen elevated lipolysis, thereby increasing mitochondrial biogenesis resulting in higher fat oxidation. Furthermore, the molecular docking and mechanistic study demonstrated the recruitment of beige fat by ketoprofen via mTORC1-p38-mediated activation of the COX-2 pathway. Overall, these results indicate the unique role of ketoprofen in body weight reduction by enhancing thermogenesis, suggesting its therapeutic potential in the treatment of obesity.
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Abbreviations
- ACO:
-
Acyl-coenzyme A oxidase 1
- β3-AR:
-
Beta 3 adrenergic receptor
- ATGL:
-
Adipose triglyceride lipase
- BAT:
-
Brown adipose tissue
- Cd137 :
-
Gene encoding TNF Receptor Superfamily Member 9 protein
- Cidea :
-
Gene encoding cell death-inducing DFFA-like effector a
- Cited1 :
-
Gene encoding Cbp/p300-interacting transactivator 1 C/EBP/Cebp, CCAAT/enhancer-binding protein/encoding gene
- COX-1/2/Cox1/2 :
-
Cyclooxygenase-1/2
- COX-4/Cox4 :
-
Cytochrome C complex IV/encoding gene
- CPT1:
-
Carnitine palmitoyltransferase 1
- CYT-C:
-
Cytochrome C complex
- HSL:
-
Hormone-sensitive lipase
- Lhx8 :
-
Gene encoding LIM/homeobox protein Lhx8
- iWAT:
-
Inguinal white adipose tissue
- mTORC1:
-
Mammalian target of rapamycin complex 1
- Nrf1 :
-
Gene encoding nuclear respiratory factor 1
- p38:
-
p38 mitogen-activated protein kinase
- p53/p53 :
-
Tumor protein/encoding gene
- p38:
-
p38 mitogen-activated protein kinase
- PG:
-
Prostaglandin
- PGC-1α/Ppargc1α :
-
Peroxisome proliferator-activated receptor gamma co-activator 1-alpha/encoding gene
- PKA:
-
Protein kinase A
- PRDM16/Prdm16 :
-
PR domain-containing 16/encoding gene
- Tbx1 :
-
Gene encoding T-box protein 1
- Tfam :
-
Gene encoding mitochondrial transcription factor A
- Tmem26 :
-
Gene encoding transmembrane protein 26
- UCP1/Ucp1 :
-
Uncoupling protein 1/encoding gene
- Zic1 :
-
Gene encoding zinc finger protein ZIC1.
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Funding
This study was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT, No. 2019R1A2C2002163).
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NH, JMH, and CMJ performed the in vivo animal experiments. NH, SM, and PHG carried out the experimental work. SM performed data analyses, interpretation, and molecular docking studies. SM and JWY wrote the manuscript and JWY is the guarantor for the integrity and accuracy of the data and is responsible for planning and designing this study.
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All animal experiments were approved by the Committee for Laboratory Animal Care and Use of Daegu University.
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Kang, N.H., Mukherjee, S., Jang, M.H. et al. Ketoprofen alleviates diet-induced obesity and promotes white fat browning in mice via the activation of COX-2 through mTORC1-p38 signaling pathway. Pflugers Arch - Eur J Physiol 472, 583–596 (2020). https://doi.org/10.1007/s00424-020-02380-7
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DOI: https://doi.org/10.1007/s00424-020-02380-7