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Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage
Solar ultraviolet radiation (UVR) is a major source of skin damage, resulting in inflammation, premature ageing, and cancer. While several UVR-induced changes, including extracellular matrix reorganisation and epidermal DNA damage, have been documented, the role of different fibroblast lineages and...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
eLife Sciences Publications, Ltd
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8747514/ https://www.ncbi.nlm.nih.gov/pubmed/34939928 http://dx.doi.org/10.7554/eLife.71052 |
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author | Rognoni, Emanuel Goss, Georgina Hiratsuka, Toru Sipilä, Kalle H Kirk, Thomas Kober, Katharina I Lui, Prudence PokWai Tsang, Victoria SK Hawkshaw, Nathan J Pilkington, Suzanne M Cho, Inchul Ali, Niwa Rhodes, Lesley E Watt, Fiona M |
author_facet | Rognoni, Emanuel Goss, Georgina Hiratsuka, Toru Sipilä, Kalle H Kirk, Thomas Kober, Katharina I Lui, Prudence PokWai Tsang, Victoria SK Hawkshaw, Nathan J Pilkington, Suzanne M Cho, Inchul Ali, Niwa Rhodes, Lesley E Watt, Fiona M |
author_sort | Rognoni, Emanuel |
collection | PubMed |
description | Solar ultraviolet radiation (UVR) is a major source of skin damage, resulting in inflammation, premature ageing, and cancer. While several UVR-induced changes, including extracellular matrix reorganisation and epidermal DNA damage, have been documented, the role of different fibroblast lineages and their communication with immune cells has not been explored. We show that acute and chronic UVR exposure led to selective loss of fibroblasts from the upper dermis in human and mouse skin. Lineage tracing and in vivo live imaging revealed that repair following acute UVR is predominantly mediated by papillary fibroblast proliferation and fibroblast reorganisation occurs with minimal migration. In contrast, chronic UVR exposure led to a permanent loss of papillary fibroblasts, with expansion of fibroblast membrane protrusions partially compensating for the reduction in cell number. Although UVR strongly activated Wnt signalling in skin, stimulation of fibroblast proliferation by epidermal β-catenin stabilisation did not enhance papillary dermis repair. Acute UVR triggered an infiltrate of neutrophils and T cell subpopulations and increased pro-inflammatory prostaglandin signalling in skin. Depletion of CD4- and CD8-positive cells resulted in increased papillary fibroblast depletion, which correlated with an increase in DNA damage, pro-inflammatory prostaglandins, and reduction in fibroblast proliferation. Conversely, topical COX-2 inhibition prevented fibroblast depletion and neutrophil infiltration after UVR. We conclude that loss of papillary fibroblasts is primarily induced by a deregulated inflammatory response, with infiltrating T cells supporting fibroblast survival upon UVR-induced environmental stress. |
format | Online Article Text |
id | pubmed-8747514 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | eLife Sciences Publications, Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-87475142022-01-12 Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage Rognoni, Emanuel Goss, Georgina Hiratsuka, Toru Sipilä, Kalle H Kirk, Thomas Kober, Katharina I Lui, Prudence PokWai Tsang, Victoria SK Hawkshaw, Nathan J Pilkington, Suzanne M Cho, Inchul Ali, Niwa Rhodes, Lesley E Watt, Fiona M eLife Cell Biology Solar ultraviolet radiation (UVR) is a major source of skin damage, resulting in inflammation, premature ageing, and cancer. While several UVR-induced changes, including extracellular matrix reorganisation and epidermal DNA damage, have been documented, the role of different fibroblast lineages and their communication with immune cells has not been explored. We show that acute and chronic UVR exposure led to selective loss of fibroblasts from the upper dermis in human and mouse skin. Lineage tracing and in vivo live imaging revealed that repair following acute UVR is predominantly mediated by papillary fibroblast proliferation and fibroblast reorganisation occurs with minimal migration. In contrast, chronic UVR exposure led to a permanent loss of papillary fibroblasts, with expansion of fibroblast membrane protrusions partially compensating for the reduction in cell number. Although UVR strongly activated Wnt signalling in skin, stimulation of fibroblast proliferation by epidermal β-catenin stabilisation did not enhance papillary dermis repair. Acute UVR triggered an infiltrate of neutrophils and T cell subpopulations and increased pro-inflammatory prostaglandin signalling in skin. Depletion of CD4- and CD8-positive cells resulted in increased papillary fibroblast depletion, which correlated with an increase in DNA damage, pro-inflammatory prostaglandins, and reduction in fibroblast proliferation. Conversely, topical COX-2 inhibition prevented fibroblast depletion and neutrophil infiltration after UVR. We conclude that loss of papillary fibroblasts is primarily induced by a deregulated inflammatory response, with infiltrating T cells supporting fibroblast survival upon UVR-induced environmental stress. eLife Sciences Publications, Ltd 2021-12-23 /pmc/articles/PMC8747514/ /pubmed/34939928 http://dx.doi.org/10.7554/eLife.71052 Text en © 2021, Rognoni et al https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited. |
spellingShingle | Cell Biology Rognoni, Emanuel Goss, Georgina Hiratsuka, Toru Sipilä, Kalle H Kirk, Thomas Kober, Katharina I Lui, Prudence PokWai Tsang, Victoria SK Hawkshaw, Nathan J Pilkington, Suzanne M Cho, Inchul Ali, Niwa Rhodes, Lesley E Watt, Fiona M Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage |
title | Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage |
title_full | Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage |
title_fullStr | Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage |
title_full_unstemmed | Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage |
title_short | Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage |
title_sort | role of distinct fibroblast lineages and immune cells in dermal repair following uv radiation-induced tissue damage |
topic | Cell Biology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8747514/ https://www.ncbi.nlm.nih.gov/pubmed/34939928 http://dx.doi.org/10.7554/eLife.71052 |
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