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- W4200533588 abstract "Tissue engineering has enabled the development of advanced and physiologically relevant models of cardiovascular diseases, with advantages over conventional 2D in vitro assays. We have previously demonstrated development of a heart on-a-chip microfluidic model with mature 3D anisotropic tissue formation that incorporates both stem cell-derived cardiomyocytes and cardiac fibroblasts within a collagen-based hydrogel. Using this platform, we herein present a model of myocardial ischemia on-a-chip, that recapitulates ischemic insult through exposure of mature 3D cardiac tissues to hypoxic environments. We report extensive validation and molecular-level analyses of the model in its ability to recapitulate myocardial ischemia in response to hypoxia, demonstrating the 1) induction of tissue fibrosis through upregulation of contractile fibers, 2) dysregulation in tissue contraction through functional assessment, 3) upregulation of hypoxia-response genes and downregulation of contractile-specific genes through targeted qPCR, and 4) transcriptomic pathway regulation of hypoxic tissues. Further, we investigated the complex response of ischemic myocardial tissues to reperfusion, identifying 5) cell toxicity, 6) sustained contractile irregularities, as well as 7) re-establishment of lactate levels and 8) gene expression, in hypoxic tissues in response to ischemia reperfusion injury." @default.
- W4200533588 created "2021-12-31" @default.
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- W4200533588 date "2022-02-01" @default.
- W4200533588 modified "2023-10-14" @default.
- W4200533588 title "Cardiac ischemia on-a-chip to investigate cellular and molecular response of myocardial tissue under hypoxia" @default.
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- W4200533588 doi "https://doi.org/10.1016/j.biomaterials.2021.121336" @default.
- W4200533588 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35026670" @default.
- W4200533588 hasPublicationYear "2022" @default.
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