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ABSTRACT: Background
To understand cardiac and skeletal muscle function, it is important to define and explore their molecular constituents and also to identify similarities and differences in the gene expression in these two different striated muscle tissues. Here, we have investigated the genes and proteins with elevated expression in cardiac and skeletal muscle in relation to all other major human tissues and organs using a global transcriptomics analysis complemented with antibody-based profiling to localize the corresponding proteins on a single cell level.Results
Our study identified a comprehensive list of genes expressed in cardiac and skeletal muscle. The genes with elevated expression were further stratified according to their global expression pattern across the human body as well as their precise localization in the muscle tissues. The functions of the proteins encoded by the elevated genes are well in line with the physiological functions of cardiac and skeletal muscle, such as contraction, ion transport, regulation of membrane potential and actomyosin structure organization. A large fraction of the transcripts in both cardiac and skeletal muscle correspond to mitochondrial proteins involved in energy metabolism, which demonstrates the extreme specialization of these muscle tissues to provide energy for contraction.Conclusions
Our results provide a comprehensive list of genes and proteins elevated in striated muscles. A number of proteins not previously characterized in cardiac and skeletal muscle were identified and localized to specific cellular subcompartments. These proteins represent an interesting starting point for further functional analysis of their role in muscle biology and disease.
SUBMITTER: Lindskog C
PROVIDER: S-EPMC4479346 | biostudies-literature | 2015 Jun
REPOSITORIES: biostudies-literature
Lindskog Cecilia C Linné Jerker J Fagerberg Linn L Hallström Björn M BM Sundberg Carl Johan CJ Lindholm Malene M Huss Mikael M Kampf Caroline C Choi Howard H Liem David A DA Ping Peipei P Väremo Leif L Mardinoglu Adil A Nielsen Jens J Larsson Erik E Pontén Fredrik F Uhlén Mathias M
BMC genomics 20150625
<h4>Background</h4>To understand cardiac and skeletal muscle function, it is important to define and explore their molecular constituents and also to identify similarities and differences in the gene expression in these two different striated muscle tissues. Here, we have investigated the genes and proteins with elevated expression in cardiac and skeletal muscle in relation to all other major human tissues and organs using a global transcriptomics analysis complemented with antibody-based profil ...[more]