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Role for IKK2 in muscle: waste not, want not
Michael Karin
Michael Karin
Published November 1, 2006
Citation Information: J Clin Invest. 2006;116(11):2866-2868. https://doi.org/10.1172/JCI30268.
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Commentary

Role for IKK2 in muscle: waste not, want not

Abstract

Activation of transcription factor NF-κB, the major regulator of the inflammatory response, depends on the inhibitor of NF-κB kinase (IKK) complex, which is composed of 2 catalytic subunits, IKK1 and IKK2 (also known as IKKα and IKKβ), and a regulatory subunit, IKKγ (also known as NEMO). In this issue of the JCI, Mourkioti et al. show that muscle-specific disruption in mice of the gene encoding IKK2 prevents NF-κB activation in response to denervation or toxin-induced injury (see the related article beginning on page 2945). Importantly, this genetic manipulation prevents muscle wasting, thereby providing strong evidence in support of a major pathogenic role for inflammation in a variety of muscular dystrophies characterized by progressive muscle fiber degeneration.

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Michael Karin

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