Duchenne Muscular Dystrophy (DMD) is a lethal muscle wasting disease caused by the lack of dystrophin, which eventually leads to apoptosis of muscle cells and impaired muscle contractility. Induced pluripotent stem cells (iPSC) offer the potential to correct the DMD gene defect and create healthy cells for transplantation without causing immune activation. However, this requires engineering iPSCs to facilitate homing and engraftment into diseased muscle tissue without promoting tumorigenesis. Our long-term goal is to optimize the differentiation of iPSC into myogenic progenitor cells (MPC) that are directed to home into muscle tissue and engraft without undergoing unrestrained growth. Our central hypothesis is that precise MPC genetic engineering, coupled with targeted modification of the host muscle niche by preconditioning or exosome delivery, will boost homing and engraftment of donor iPSC-derived MPC via the SDF-CXCR4 axis to safely and effectively treat DMD. The rationale is to develop methodology to produce large quantities of functional MPC from patients with DMD that are tumor free and can effectively home to sites of muscle injury and facilitate repair. We plan to test our central hypothesis and accomplish the objectives of this application by pursuing the following three specific aims.
In Aim 1, we will test the hypothesis that iPSC-derived progenitor cells are effective and safe for regeneration of dystrophic muscle.
In Aim 2, we will test the hypothesis that activation of CXCR4 in iPSC-derived myogenic precursors from DMD mice using a CRISPR-on based genomic platform improves engraftment of donor cells in DMD mice.
In Aim 3, we will test the hypothesis that optimizing the regenerative microenvironment in muscle by ischemic preconditioning or iPSC-exosome-mediated delivery of SDF-1? protein enhances the homing and/or survival of donor MPC to augment muscle repair. These experiments have the potential to demonstrate that transplantation of iPSC-derived progenitors, coupled with methods to optimize the host muscle microenvironment, will more effectively ameliorate dystrophic pathology and improve the quality of life for patients with DMD.
Duchenne Muscular Dystrophy is a genetic disease that causes progressive muscle weakness and death in young men. This proposal will establish novel methods for producing myogenic progenitors derived from integration-free induced pluripotent stem cells (iPSC), their mobilization, and engraftment into the dystrophic muscle for restoring normal muscle population.
|Dou, Huijuan; Feher, Attila; Davila, Alec C et al. (2017) Role of Adipose Tissue Endothelial ADAM17 in Age-Related Coronary Microvascular Dysfunction. Arterioscler Thromb Vasc Biol 37:1180-1193|
|Gao, Lixia; Wang, Xuli; Tang, Yaoliang et al. (2017) FGF19/FGFR4 signaling contributes to the resistance of hepatocellular carcinoma to sorafenib. J Exp Clin Cancer Res 36:8|
|Li, Jie; Ma, Wenxia; Yue, Guihua et al. (2017) Cardiac proteasome functional insufficiency plays a pathogenic role in diabetic cardiomyopathy. J Mol Cell Cardiol 102:53-60|
|Yiew, Nicole K H; Chatterjee, Tapan K; Tang, Yao Liang et al. (2017) A novel role for the Wnt inhibitor APCDD1 in adipocyte differentiation: Implications for diet-induced obesity. J Biol Chem 292:6312-6324|
|Murphy, Cameron; Withrow, Joseph; Hunter, Monte et al. (2017) Emerging role of extracellular vesicles in musculoskeletal diseases. Mol Aspects Med :|
|Omar, Abdullah; Zhou, Mi; Berman, Adam et al. (2016) Genomic-based diagnosis of arrhythmia disease in a personalized medicine era. Expert Rev Precis Med Drug Dev 1:497-504|
|Cuomo, Jason R; Sharma, Gyanendra K; Conger, Preston D et al. (2016) Novel concepts in radiation-induced cardiovascular disease. World J Cardiol 8:504-519|
|Kim, Ha Won; Weintraub, Neal L (2016) Aortic Aneurysm: In Defense of the Vascular Smooth Muscle Cell. Arterioscler Thromb Vasc Biol 36:2138-2140|