Research Project
Grant-in-Aid for Young Scientists (B)
We currently focus on the novel role of satellite cells in the myofiber-type regulation. Our previous studies proposed that satellite cell cultures from soleus muscle (slow-myofiber abundant) synthesized and secreted larger amount of semaphorin 3A (Sema3A) than extensor digitorum longus (EDL; fast-myofiber abundant) and Sema3A promoted the slow-twitch myofiber formation. In this study, we focused on Netrins characterized as multi-functional modulators like Sema3A also importantly mediate myofiber-type commitment early before motor-neural stimulations. Initially, we detected the expression levels of Netrins during myogenic differentiation phase. Next, the satellite cells from EDL expressed higher levels of Netrin-1 than those from soleus. Netrin-1 knockdown experiments in satellite cell cultures performed the inhibition of fast-myotube formation. Taken together, these results suggest that satellite cell-derived Netrin1 may be the key modulator for the fast-myofiber-type commitment.
食肉の原料となる骨格筋は、主に筋細胞(細長い巨大な細胞のため“筋線維”と呼ばれる)から構成される。筋線維は、収縮特性や代謝特性等の違いによって遅筋型または速筋型といった筋線維型で分類される。これまでに、筋線維型は成熟した筋線維に接着する運動神経刺激によって制御されると考えられてきたが、本研究成果より、各筋線維型に特異的な衛星細胞はそれぞれで多量に産生する多機能性の細胞外制御因子によって、筋管の筋線維型を制御する「早期決定機構」の存在が明らかとなった。本機構の応用により、容易に筋線維型を変換することで、食肉の質を自在にコントロールできる新技術開発に繋がることが期待される。
All 2019 2018 2017 2016 Other
All Journal Article (16 results) (of which Int'l Joint Research: 4 results, Peer Reviewed: 15 results, Open Access: 4 results, Acknowledgement Compliant: 5 results) Presentation (32 results) (of which Int'l Joint Research: 2 results) Remarks (2 results)
Data in Brief
Volume: 17 Pages: 1348-1351
10.1016/j.dib.2018.02.063
Proceedings of Japanese Society for Animal Nutrition and Metabolism(栄養生理研究会報)
Volume: 62 Pages: 9-17
Am J Physiol Cell Physiol
Volume: in press Issue: 1 Pages: C104-C114
10.1152/ajpcell.00245.2017
食肉の科学
Volume: 59 Pages: 33-38
40021637798
Animal Science Journal
Volume: 90 Issue: 3 Pages: 423-434
10.1111/asj.13145
栄養生理研究会報
40021510398
STEM CELLS
Volume: 35 Issue: 7 Pages: 1815-1834
10.1002/stem.2639
Molecular Nutrition & Food Research
Volume: 61 Issue: 10 Pages: 1700156-1700156
10.1002/mnfr.201700156
120006523733
Volume: 印刷中 Issue: 11 Pages: 1788-1793
10.1111/asj.12826
Journal of Agricultural and Food Chemistry
Volume: 65 Issue: 50 Pages: 11118-11124
10.1021/acs.jafc.7b04786
Molecular and Cellular Endocrinology
Volume: 440 Pages: 16-24
10.1016/j.mce.2016.11.006
Volume: 88 Issue: 3 Pages: 489-499
10.1111/asj.12655
International Journal of Biochemistry and Cell Biology
Volume: 85 Pages: 91-101
10.1016/j.biocel.2017.02.005
Volume: 12 Pages: 269-273
10.1016/j.dib.2017.03.051
Biological Review
Volume: 92 Issue: 3 Pages: 1389-1405
10.1111/brv.12286
Volume: 60 Pages: 69-77
40020901786
http://lab.agr.hokudai.ac.jp/cell_tissue_biology/?page_id=92
http://www.agr.hokudai.ac.jp/cell_tissue_biology/?page_id=92