Effect of microRNA modulation on bioartificial muscle function.
Repository Usage Stats
Cellular therapies have recently employed the use of small RNA molecules, particularly microRNAs (miRNAs), to regulate various cellular processes that may be altered in disease states. In this study, we examined the effect of transient muscle-specific miRNA inhibition on the function of three-dimensional skeletal muscle cultures, or bioartificial muscles (BAMs). Skeletal myoblast differentiation in vitro is enhanced by inhibiting a proliferation-promoting miRNA (miR-133) expressed in muscle tissues. As assessed by functional force measurements in response to electrical stimulation at frequencies ranging from 0 to 20 Hz, peak forces exhibited by BAMs with miR-133 inhibition (anti-miR-133) were on average 20% higher than the corresponding negative control, although dynamic responses to electrical stimulation in miRNA-transfected BAMs and negative controls were similar to nontransfected controls. Immunostaining for alpha-actinin and myosin also showed more distinct striations and myofiber organization in anti-miR-133 BAMs, and fiber diameters were significantly larger in these BAMs over both the nontransfected and negative controls. Compared to the negative control, anti-miR-133 BAMs exhibited more intense nuclear staining for Mef2, a key myogenic differentiation marker. To our knowledge, this study is the first to demonstrate that miRNA mediation has functional effects on tissue-engineered constructs.
Published Version (Please cite this version)10.1089/ten.TEA.2009.0601
Publication InfoRhim, Caroline; Cheng, Cindy S; Kraus, William E; & Truskey, George A (2010). Effect of microRNA modulation on bioartificial muscle function. Tissue Eng Part A, 16(12). pp. 3589-3597. 10.1089/ten.TEA.2009.0601. Retrieved from https://hdl.handle.net/10161/3365.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
More InfoShow full item record
Richard and Pat Johnson University Distinguished Professor
My training, expertise and research interests range from human integrative physiology and genetics to animal exercise models to cell culture models of skeletal muscle adaptation to mechanical stretch. I am trained clinically as an internist and preventive cardiologist, with particular expertise in preventive cardiology and cardiac rehabilitation. My research training spans molecular biology and cell culture, molecular genetics, and integrative human exercise physiology and metabolism. I pr
R. Eugene and Susie E. Goodson Distinguished Professor of Biomedical Engineering
My research interests focus upon the effect of physical forces on the function of vascular cells and skeletal muscle, cell adhesion, and the design of engineered tissues. Current research projects examine the effect of endothelial cell senescence upon permeability to macromolecules and the response to fluid shear stress, the development of microphysiological blood vessels and muscles for evaluation of drug toxicity and the design of engineered endothelialized blood vessels and skelet
Alphabetical list of authors with Scholars@Duke profiles.