Proteomic analysis of the atrophying rat soleus muscle following denervation

• Published in: Electrophoresis Vol. 21; no. 11; pp. 2228 - 2234
• Main Authors: Isfort, Robert J., Hinkle, Richard T., Jones, Melissa B., Wang, Feng, Greis, Kenneth D., Sun, Yiping, Keough, Thomas W., Anderson, N. Leigh, Sheldon, Russell J.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.06.2000
• Subjects: Animals; Atrophy; Denervation; Electrophoresis, Gel, Two-Dimensional; Female; Muscle Proteins - metabolism; Muscle, Skeletal - innervation; Muscle, Skeletal - metabolism; Peptide Mapping; Proteome; Proteomic analysis; Rat soleus muscle; Rats; Rats, Sprague-Dawley; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
• ISSN: 0173-0835; 1522-2683
• DOI: 10.1002/1522-2683(20000601)21:11<2228::AID-ELPS2228>3.0.CO;2-V

A proteomic analysis was performed comparing normal rat soleus muscle to denervated soleus muscle at 0.5, 1, 2, 4, 6, 8 and 10 days post denervation. Muscle mass measurements demonstrated that the times of major mass changes occurred between 2 and 4 days post denervation. Proteomic analysis of the denervated soleus muscle during the atrophy process demonstrated statistically significant (at the p < 0.01 level) changes in 73 soleus proteins, including coordinated changes in select groups of proteins. Sequence analysis of ten differentially regulated proteins identified metabolic proteins, chaperone and contractile apparatus proteins. Together these data indicate that coordinated temporally regulated changes in the proteome occur during denervation‐induced soleus muslce atrophy, including changes in muscle metabolism and contractile apparatus proteins.