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- W3200878055 abstract "Abstract Pressure ulcer (PU) is a chronic wound often seen in spinal cord injury patients and other bed-bound individuals, particularly in the elderly population. Despite its association with high mortality, the pathophysiology of PU remains poorly understood. Here, we compared single-cell transcriptomic profiles of human epidermal cells from PU wound edges with those from uninjured skin and acute wounds (AWs) in healthy donors. We identified significant shifts in the cell composition and gene expression patterns in PU. In particular, we found that major histocompatibility complex class II (MHCII) expressing keratinocytes were enriched in patients with worse healing outcomes. Furthermore, we showed that the IFNγ in PU-derived wound fluid could induce MHCII expression in keratinocytes and that these wound fluid-treated keratinocytes inhibited autologous T cell activation. In line with this observation, we found that T cells from PUs enriched with MHCII+ keratinocytes produced fewer inflammatory cytokines. Overall, our study provides a high-resolution molecular map of human PU compared to AW and intact skin, providing new insights into PU pathology and the future development of tailored wound therapy." @default.
- W3200878055 created "2021-09-27" @default.
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- W3200878055 date "2021-04-21" @default.
- W3200878055 modified "2023-10-01" @default.
- W3200878055 title "Single-cell analysis reveals MHCII expressing keratinocytes in pressure ulcers with worse healing outcomes" @default.
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- W3200878055 doi "https://doi.org/10.1101/2021.04.20.440591" @default.
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