Document Detail

Ciliary neurotrophic factor (CNTF) promotes skeletal muscle progenitor cell (MPC) viability via the phosphatidylinositol 3-kinase-Akt pathway.
MedLine Citation:
PMID:  23147834     Owner:  NLM     Status:  Publisher    
Muscle progenitor cells (MPCs) are currently being investigated as cellular vectors to deliver neurotrophic factor (NF) for the promotion of re-innervation after axonal injury. Ideally NF delivery in such a model would enhance axonal regeneration while simultaneously promoting MPC viability. To date, insulin-like growth factor 1 (IGF-1) is one of the few NFs known to promote both re-innervation and MPC viability. We herein identify ciliary neurotrophic factor (CNTF) as a factor that promotes MPC viability in culture, and demonstrate CNTF to impart greater viability effects on MPCs than IGF-1. We demonstrate that pharmacological inhibition via LY294002 results in abrogation of CNTF-mediated viability, suggesting that the CNTF-mediated MPC viability benefit occurs via the PI3-Akt pathway. Finally, we employ a genetic model, establishing MPC cultures from mice deficient in class I(A) PI-3 K (p85α(-/-) ) mice, and demonstrate that the viability benefit imparted by CNTF is completely abrogated in PI-3 K-deficient MPCs compared to wild-type controls. In summary, our investigations define CNTF as a promoter of MPC viability beyond IGF-1, and reveal that the CNTF-mediated MPC viability effects occur via the PI3-Akt pathway. Copyright © 2012 John Wiley & Sons, Ltd.
Kelly Hiatt; Davina Lewis; Mathew Shew; Khadijeh Bijangi-Vishehsaraei; Stacey Halum
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-13
Journal Detail:
Title:  Journal of tissue engineering and regenerative medicine     Volume:  -     ISSN:  1932-7005     ISO Abbreviation:  J Tissue Eng Regen Med     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101308490     Medline TA:  J Tissue Eng Regen Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 John Wiley & Sons, Ltd.
Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, IN, USA.
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