The role that biophysical forces play in regenerative medicine is expanding, with increased interest in the use of intrinsic electrical forces (via regulation of cell membrane channels) and externally applied electric fields (via bioreactor environments) as important control points. Despite significant potential of electrical signals for regenerative medicine, they have not yet been integrated into the design of tissue engineering systems. We propose a radically new strategy to improve connective tissue regeneration by electrotherapeutic control of cell function, through the integrated use of molecular and electrical control of cell function and tissue formation. Our hypothesis is that the synergistic application of molecular control of transmembrane ion flux and externally applied electric fields will improve the quality of cartilage and bone regeneration and accelerate their integration in vivo. We will rigorously test this hypothesis by studying the regeneration of composite bone/cartilage grafts. The regulation of cell function and tissue regeneration will be first studied in vitro using controlled bioreactor environments, and then in vivo in an orthotropic animal model of cartilage and bone regeneration.
Three specific aims will be pursued: (a) Biophysical regulation of chondrogenesis and osteogenesis in adult human stem cells, (b) Electrotherapeutic bioreactor models for regeneration of cartilage/bone tissues, and (c) Animal studies of cartilage/bone regeneration. The anticipated scientific impact will be in significant new insights into the biophysical control of connective tissue repair by modulation of electrical regulatory signals. The main technological impact will be in improved regeneration of cartilage/bone tissues, and the new generation of electrotherapeutic medical devices termed BioDomes.
Radically new approaches are necessary for advancing the integration and healing of musculoskeletal tissues. The proposed studies are designed to enable in-depth understanding of the effects and mechanisms of electrical cellular control on connective tissue healing and regeneration. The scientific findings will be translated into the development of novel electrotherapeutic devices, BioDomes, for potential application in a range of regenerative medicine scenarios.
|Ng, Johnathan J; Wei, Yiyong; Zhou, Bin et al. (2017) Recapitulation of physiological spatiotemporal signals promotes in vitro formation of phenotypically stable human articular cartilage. Proc Natl Acad Sci U S A 114:2556-2561|
|Estell, Eben G; Murphy, Lance A; Silverstein, Amy M et al. (2017) Fibroblast-like synoviocyte mechanosensitivity to fluid shear is modulated by interleukin-1?. J Biomech 60:91-99|
|Herrera-Rincon, Celia; Pai, Vaibhav P; Moran, Kristine M et al. (2017) The brain is required for normal muscle and nerve patterning during early Xenopus development. Nat Commun 8:587|
|Ng, Johnathan; Spiller, Kara; Bernhard, Jonathan et al. (2017) Biomimetic Approaches for Bone Tissue Engineering. Tissue Eng Part B Rev :|
|Yuan, Xiaoning; Wei, Yiyong; Villasante, Aránzazu et al. (2017) Stem cell delivery in tissue-specific hydrogel enabled meniscal repair in an orthotopic rat model. Biomaterials 132:59-71|
|Mathews, Juanita; Levin, Michael (2017) Gap junctional signaling in pattern regulation: Physiological network connectivity instructs growth and form. Dev Neurobiol 77:643-673|
|Ng, Johnathan; Wei, Yiyong; Zhou, Bin et al. (2017) Ectopic implantation of juvenile osteochondral tissues recapitulates endochondral ossification. J Tissue Eng Regen Med :|
|O'Connell, Grace D; Tan, Andrea R; Cui, Victoria et al. (2017) Human chondrocyte migration behaviour to guide the development of engineered cartilage. J Tissue Eng Regen Med 11:877-886|
|Tan, Andrea R; Hung, Clark T (2017) Concise Review: Mesenchymal Stem Cells for Functional Cartilage Tissue Engineering: Taking Cues from Chondrocyte-Based Constructs. Stem Cells Transl Med 6:1295-1303|
|Ng, Johnathan; Bernhard, Jonathan; Vunjak-Novakovic, Gordana (2016) Mesenchymal Stem Cells for Osteochondral Tissue Engineering. Methods Mol Biol 1416:35-54|
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