{"title":"IGF-1 knockdown inhibits phosphorylation of Akt and ERK in chicken embryonic myotubes","authors":"Takaoki Saneyasu, Tomonori Nakamura, Kazuhisa Honda, Hiroshi Kamisoyama","doi":"10.1016/j.ghir.2022.101478","DOIUrl":null,"url":null,"abstract":"<div><h3>Objective</h3><p>We examined whether auto/paracrine insulin-like growth factor-1 (IGF-1) contributes to the phosphorylation of Akt and ERK in chicken myotubes.</p></div><div><h3>Methods</h3><p>Chicken myotubes were treated with IGF-1 siRNA, and then total RNA and protein were harvested for real-time PCR and western blot analysis.</p></div><div><h3>Results</h3><p>Treatment with IGF-1 siRNA inhibited the phosphorylation of Akt and ERK, but not of ribosomal protein S6, in chicken myotubes. Interestingly, IGF-1 siRNA downregulated the expression of IGF-2.</p></div><div><h3>Conclusions</h3><p>The results of this study suggest that auto/paracrine IGF-1 contributes to Akt and ERK phosphorylation in chicken myotubes.</p></div>","PeriodicalId":12803,"journal":{"name":"Growth Hormone & Igf Research","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Growth Hormone & Igf Research","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1096637422000351","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CELL BIOLOGY","Score":null,"Total":0}
引用次数: 1
Abstract
Objective
We examined whether auto/paracrine insulin-like growth factor-1 (IGF-1) contributes to the phosphorylation of Akt and ERK in chicken myotubes.
Methods
Chicken myotubes were treated with IGF-1 siRNA, and then total RNA and protein were harvested for real-time PCR and western blot analysis.
Results
Treatment with IGF-1 siRNA inhibited the phosphorylation of Akt and ERK, but not of ribosomal protein S6, in chicken myotubes. Interestingly, IGF-1 siRNA downregulated the expression of IGF-2.
Conclusions
The results of this study suggest that auto/paracrine IGF-1 contributes to Akt and ERK phosphorylation in chicken myotubes.
期刊介绍：
Growth Hormone & IGF Research is a forum for research on the regulation of growth and metabolism in humans, animals, tissues and cells. It publishes articles on all aspects of growth-promoting and growth-inhibiting hormones and factors, with particular emphasis on insulin-like growth factors (IGFs) and growth hormone. This reflects the increasing importance of growth hormone and IGFs in clinical medicine and in the treatment of diseases.
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