Articles by Marloes L. P. Langelaan in JoVE
רקמות שריר שלד הנדסה מתאי Murine היצמדות מולידו ויישום של גירוי חשמלי Daisy W. J. van der Schaft1, Ariane C. C. van Spreeuwel1, Kristel J. M. Boonen1, Marloes L. P. Langelaan1, Carlijn V. C. Bouten1, Frank P. T. Baaijens1 1Department of Biomedical Engineering, Soft Tissue Biomechanics and Engineering, Eindhoven University of Technology, The Netherlands רקמת שריר מהונדסת יש פוטנציאל גדול ברפואת רגנרטיבית, כמודל מחלה וגם כמקור חלופי לבשר. כאן אנו מתארים ההנדסיים של מבנה שרירים, במקרה זה מתאי עכבר והיצמדות לאב, והגירוי על ידי פולסים חשמליים.
Other articles by Marloes L. P. Langelaan on PubMed
Effects of a Combined Mechanical Stimulation Protocol: Value for Skeletal Muscle Tissue Engineering Journal of Biomechanics. May, 2010 | Pubmed ID: 20189177 Skeletal muscle is an appealing topic for tissue engineering because of its variety in applications for regenerative medicine, in vitro physiological model systems, and in vitro meat production. Besides conventional biochemical cues to promote muscle tissue maturation in vitro, biophysical stimuli are necessary to reach the desired functionality and texture of the engineered tissue. Stretch, caused by active movements of the body, is an important factor present in the niche of muscle progenitor cells in vivo. We therefore investigated the effects of uniaxial ramp stretch (2%) followed by uniaxial intermittent dynamic stretch (4%) on C2C12 and murine muscle progenitor cells in a 2D and 3D environment and found that stretch negatively influenced maturation in all cases, demonstrated by decreased expression of MRFs and sarcomere proteins at the RNA level and a delay in the formation of cross striations. We therefore conclude that the current protocol is not recommended for skeletal muscle tissue engineering purposes.
Advanced Maturation by Electrical Stimulation: Differences in Response Between C2C12 and Primary Muscle Progenitor Cells Journal of Tissue Engineering and Regenerative Medicine. Jul, 2011 | Pubmed ID: 21695794 Skeletal muscle tissue engineering still does not result in the desired functional properties and texture as preferred for regenerative medicine and meat production applications. Electrical stimulation has been appropriately used as a tool to advance muscle cell maturation in vitro, thereby simulating nerve stimulation, as part of the muscle cell niche in vivo. We first investigated the effects of electrical stimulation protocols in two-dimensional (2D) monolayers of C2C12 and translated these protocols to a three-dimensional (3D) model system, based on a collagen type I/Matrigel(â„¢) hydrogel. More importantly, we addressed the ongoing debate of the translation of results found in cell lines (C2C12) to a primary cell source [muscle progenitor cells (MPCs)] in our 3D system. Striking differences in maturation level were found between the different cell sources. Constructs with MPCs were much more mature than C2C12 constructs, based on developed cross-striations and expression levels of mature myosin heavy chain (MHC) isoforms. Overall, electrical stimulation, when optimally timed, accelerated sarcomere assembly in both 2D and 3D. In addition, MPC constructs were more susceptible to the electrical stimulus, resulting in a shift of MHC expression to slower isoforms.