Ankrd2 is a modulator of NF-κB-mediated inflammatory responses during muscle differentiation

C. Bean, N. K. Verma, D. L. Yamamoto, F. Chemello, V. Cenni, M. C. Filomena, J. Chen, M. L. Bang, G. Lanfranchi

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Adaptive responses of skeletal muscle regulate the nuclear shuttling of the sarcomeric protein Ankrd2 that can transduce different stimuli into specific adaptations by interacting with both structural and regulatory proteins. In a genome-wide expression study on Ankrd2-knockout or -overexpressing primary proliferating or differentiating myoblasts, we found an inverse correlation between Ankrd2 levels and the expression of proinflammatory genes and identified Ankrd2 as a potent repressor of inflammatory responses through direct interaction with the NF-jB repressor subunit p50. In particular, we identified Gsk3b as a novel direct target of the p50/Ankrd2 repressosome dimer and found that the recruitment of p50 by Ankrd2 is dependent on Akt2- mediated phosphorylation of Ankrd2 upon oxidative stress during myogenic differentiation. Surprisingly, the absence of Ankrd2 in slow muscle negatively affected the expression of cytokines and key calcineurin-dependent genes associated with the slowtwitch muscle program. Thus, our findings support a model in which alterations in Ankrd2 protein and phosphorylation levels modulate the balance between physiological and pathological inflammatory responses in muscle.

Original languageEnglish (US)
Article numbere1002
JournalCell Death and Disease
Issue number1
StatePublished - Jan 16 2014
Externally publishedYes


  • Gsk3b
  • Inflammation
  • Muscle differentiation
  • NF-κB
  • Oxidative stress

ASJC Scopus subject areas

  • Immunology
  • Cellular and Molecular Neuroscience
  • Cell Biology
  • Cancer Research


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