Abstract
Obesity is closely associated with insulin resistance and establishes the leading risk factor for type 2 diabetes mellitus, yet the molecular mechanisms of this association are poorly understood1. The c-Jun amino-terminal kinases (JNKs) can interfere with insulin action in cultured cells2 and are activated by inflammatory cytokines and free fatty acids, molecules that have been implicated in the development of type 2 diabetes3,4. Here we show that JNK activity is abnormally elevated in obesity. Furthermore, an absence of JNK1 results in decreased adiposity, significantly improved insulin sensitivity and enhanced insulin receptor signalling capacity in two different models of mouse obesity. Thus, JNK is a crucial mediator of obesity and insulin resistance and a potential target for therapeutics.
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Change history
16 June 2023
A Correction to this paper has been published: https://doi.org/10.1038/s41586-023-06285-0
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Acknowledgements
This work is in part supported by grants from the National Institutes of Health (M.K. and G.S.H.) and the Pew Foundation (G.S.H.).
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Hirosumi, J., Tuncman, G., Chang, L. et al. A central role for JNK in obesity and insulin resistance. Nature 420, 333–336 (2002). https://doi.org/10.1038/nature01137
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DOI: https://doi.org/10.1038/nature01137
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