1. Integrated spatial multiomics reveals fibroblast fate during tissue repair
- Author
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Oscar Silva, Shamik Mascharak, Heather E. Des Jardins-Park, Kellen Chen, Kathryn E. Yost, Malini Chinta, Clement D. Marshall, Derrick C. Wan, W. Tripp Leavitt, Jeffrey A. Norton, Howard Y. Chang, R. Chase Ransom, Alan T. Nguyen, Geoffrey C. Gurtner, Michael T. Longaker, Dhananjay Wagh, John A. Coller, Ankit Salhotra, Dominic Henn, Gunsagar S. Gulati, Michael Januszyk, Aaron M. Newman, Ashley L. Titan, Austin R. Burcham, R. Ellen Jones, Deshka S. Foster, Karen Tolentino, Michael S. Hu, and Gerlinde Wernig
- Subjects
Cell ,Scars ,Biology ,Mechanotransduction, Cellular ,Extracellular matrix ,Transcriptome ,Cicatrix ,Mice ,spatial epigenomics ,Cell Movement ,Fibrosis ,medicine ,Animals ,Fibroblast ,Cell Proliferation ,Skin ,Wound Healing ,Multidisciplinary ,spatial transcriptomics ,fibrosis ,Cell Differentiation ,Cell Biology ,Biological Sciences ,Fibroblasts ,medicine.disease ,Extracellular Matrix ,Chromatin ,Cell biology ,Mice, Inbred C57BL ,medicine.anatomical_structure ,chromatin accessibility ,Female ,medicine.symptom ,Wound healing ,multiomics - Abstract
Significance In the skin, tissue injury results in fibrosis in the form of a scar composed of dense extracellular matrix deposited by fibroblasts. Therapies that promote tissue regeneration rather than fibrosis remain elusive because principles of fibroblast programming and response to injury remain incompletely understood. Here, we present a multimodal -omics platform for the study of cell populations in complex tissue, which has allowed us to characterize wound healing fibroblasts across both time and space. We identify functionally distinct fibroblast subpopulations and track cell fate during the response to wounding. We demonstrate that populations of fibroblasts migrate, proliferate, and differentiate in an adaptive response to disruption of their environment. These results illustrate fundamental principles underlying the cellular response to tissue injury., In the skin, tissue injury results in fibrosis in the form of scars composed of dense extracellular matrix deposited by fibroblasts. The therapeutic goal of regenerative wound healing has remained elusive, in part because principles of fibroblast programming and adaptive response to injury remain incompletely understood. Here, we present a multimodal -omics platform for the comprehensive study of cell populations in complex tissue, which has allowed us to characterize the cells involved in wound healing across both time and space. We employ a stented wound model that recapitulates human tissue repair kinetics and multiple Rainbow transgenic lines to precisely track fibroblast fate during the physiologic response to skin injury. Through integrated analysis of single cell chromatin landscapes and gene expression states, coupled with spatial transcriptomic profiling, we are able to impute fibroblast epigenomes with temporospatial resolution. This has allowed us to reveal potential mechanisms controlling fibroblast fate during migration, proliferation, and differentiation following skin injury, and thereby reexamine the canonical phases of wound healing. These findings have broad implications for the study of tissue repair in complex organ systems.
- Published
- 2021
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