Laminin mimetic peptide nanofibers regenerate acute muscle defect
Cimenci, C. E.
Umay, E. K.
Guler, M. O.
Tekinay, A. B.
Acta Materialia Inc
190 - 200
Item Usage Stats
MetadataShow full item record
Skeletal muscle cells are terminally differentiated and require the activation of muscle progenitor (satellite) cells for their regeneration. There is a clinical need for faster and more efficient treatment methods for acute muscle injuries, and the stimulation of satellite cell proliferation is promising in this context. In this study, we designed and synthesized a laminin-mimetic bioactive peptide (LM/E-PA) system that is capable of accelerating satellite cell activation by emulating the structure and function of laminin, a major protein of the basal membrane of the skeletal muscle. The LM/E-PA nanofibers enhance myogenic differentiation in vitro and the clinical relevance of the laminin-mimetic bioactive scaffold system was demonstrated further by assessing its effect on the regeneration of acute muscle injury in a rat model. Laminin mimetic peptide nanofibers significantly promoted satellite cell activation in skeletal muscle and accelerated myofibrillar regeneration following acute muscle injury. In addition, the LM/E-PA scaffold treatment significantly reduced the time required for the structural and functional repair of skeletal muscle. This study represents one of the first examples of molecular- and tissue-level regeneration of skeletal muscle facilitated by bioactive peptide nanofibers following acute muscle injury. Significance Statement Sports, heavy lifting and other strength-intensive tasks are ubiquitous in modern life and likely to cause acute skeletal muscle injury. Speeding up regeneration of skeletal muscle injuries would not only shorten the duration of recovery for the patient, but also support the general health and functionality of the repaired muscle tissue. In this work, we designed and synthesized a laminin-mimetic nanosystem to enhance muscle regeneration. We tested its activity in a rat tibialis anterior muscle by injecting the bioactive nanosystem. The evaluation of the regeneration and differentiation capacity of skeletal muscle suggested that the laminin-mimetic nanosystem enhances skeletal muscle regeneration and provides a suitable platform that is highly promising for the regeneration of acute muscle injuries. This work demonstrates for the first time that laminin-mimetic self-assembled peptide nanosystems facilitate myogenic differentiation in vivo without the need for additional treatment.
KeywordsAcute muscle injury
Transcription factor PAX7
High performance liquid chromatography
In vitro study
In vivo study
Liquid chromatography-mass spectrometry
Reverse transcription polymerase chain reaction
Scanning electron microscopy
Transmission electron microscopy
Published Version (Please cite this version)http://dx.doi.org/10.1016/j.actbio.2017.07.010
Showing items related by title, author, creator and subject.
Mutation in TOR1AIP1 encoding LAP1B in a form of muscular dystrophy: A novel gene related to nuclear envelopathies Kayman-Kurekci G.; Talim, B.; Korkusuz P.; Sayar, N.; Sarioglu, T.; Oncel I.; Sharafi P.; Gundesli H.; Balci-Hayta, B.; Purali, N.; Serdaroglu-Oflazer P.; Topaloglu H.; Dincer P. (Elsevier Ltd, 2014)We performed genome-wide homozygosity mapping and mapped a novel myopathic phenotype to chromosomal region 1q25 in a consanguineous family with three affected individuals manifesting proximal and distal weakness and atrophy, ...
Rufaihah, A. J.; Yasa, I. C.; Ramanujam, V. S.; Arularasu, S. C.; Kofidis, T.; Guler, M. O.; Tekinay, A. B. (Acta Materialia Inc, 2017)Myocardial infarction remains one of the top leading causes of death in the world and the damage sustained in the heart eventually develops into heart failure. Limited conventional treatment options due to the inability ...
Apoptotic vascular smooth muscle cell depletion via BCL2 family of proteins in human ascending aortic aneurysm and dissection Durdu, S.; Deniz, G. C.; Balci, D.; Zaim, C.; Dogan, A.; Can, A.; Akcali, K. C.; Akar, A. R. (Blackwell Publishing Ltd, 2012)Aims: This study investigates the expression patterns of BCL2 (B-cell CLL/lymphoma2) family of proteins and the extent of vascular smooth muscle cell (VSMC) apoptosis in thoracic aortic aneurysms (TAA), type-A aortic ...