Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic Density
Mammographic density is associated with a 4–6-fold increase in breast cancer risk independent of age and BMI. High mammographic density is characterized by breast tissue with high proportions of stroma comprised of fibroblasts, collagen, and immune cells. This study sought to investigate whether str...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/11/3/799 |
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| author | Maddison Archer Pallave Dasari David Walsh Kara L. Britt Andreas Evdokiou Wendy V. Ingman |
| author_facet | Maddison Archer Pallave Dasari David Walsh Kara L. Britt Andreas Evdokiou Wendy V. Ingman |
| author_sort | Maddison Archer |
| collection | DOAJ |
| description | Mammographic density is associated with a 4–6-fold increase in breast cancer risk independent of age and BMI. High mammographic density is characterized by breast tissue with high proportions of stroma comprised of fibroblasts, collagen, and immune cells. This study sought to investigate whether stromal fibroblasts from high mammographic density breast tissue contributes to increased extracellular matrix deposition and pro-tumorigenic signaling. Mammary fibroblasts were isolated from women with high and low mammographic density and exposed to immune factors myeloperoxidase (MPO), eosinophil peroxidase (EPO), transforming growth factor beta 1 (TGFB1) and tumour necrosis factor alpha (TNFA) for 72 h and profiled for expression of cancer-associated fibroblast and extracellular matrix regulation markers. No differences in gene expression profiles or collagen production were observed between fibroblasts with high or low mammographic density, and they did not have a differential response to immune mediators. MPO and EPO significantly increased the production of collagen 1. TGFB and TNFA induced variable changes in gene expression. Fibroblasts cultured in vitro from women with high mammographic density do not appear to be inherently different to those from women with low mammographic density. The function of fibroblasts in mammographic density-associated breast cancer risk is likely to be regulated by immune signals from surrounding cells in the microenvironment. |
| first_indexed | 2024-03-09T23:39:35Z |
| format | Article |
| id | doaj.art-0bd6b51eb7d84a279c0d2a986126185b |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-09T23:39:35Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-0bd6b51eb7d84a279c0d2a986126185b2023-11-23T16:54:11ZengMDPI AGJournal of Clinical Medicine2077-03832022-02-0111379910.3390/jcm11030799Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic DensityMaddison Archer0Pallave Dasari1David Walsh2Kara L. Britt3Andreas Evdokiou4Wendy V. Ingman5Discipline of Surgical Specialties, Adelaide Medical School, The Queen Elizabeth Hospital, University of Adelaide, Adelaide, SA 5011, AustraliaDiscipline of Surgical Specialties, Adelaide Medical School, The Queen Elizabeth Hospital, University of Adelaide, Adelaide, SA 5011, AustraliaDiscipline of Surgical Specialties, Adelaide Medical School, The Queen Elizabeth Hospital, University of Adelaide, Adelaide, SA 5011, AustraliaPeter MacCallum Cancer Centre, Melbourne, VIC 3000, AustraliaDiscipline of Surgical Specialties, Adelaide Medical School, The Queen Elizabeth Hospital, University of Adelaide, Adelaide, SA 5011, AustraliaDiscipline of Surgical Specialties, Adelaide Medical School, The Queen Elizabeth Hospital, University of Adelaide, Adelaide, SA 5011, AustraliaMammographic density is associated with a 4–6-fold increase in breast cancer risk independent of age and BMI. High mammographic density is characterized by breast tissue with high proportions of stroma comprised of fibroblasts, collagen, and immune cells. This study sought to investigate whether stromal fibroblasts from high mammographic density breast tissue contributes to increased extracellular matrix deposition and pro-tumorigenic signaling. Mammary fibroblasts were isolated from women with high and low mammographic density and exposed to immune factors myeloperoxidase (MPO), eosinophil peroxidase (EPO), transforming growth factor beta 1 (TGFB1) and tumour necrosis factor alpha (TNFA) for 72 h and profiled for expression of cancer-associated fibroblast and extracellular matrix regulation markers. No differences in gene expression profiles or collagen production were observed between fibroblasts with high or low mammographic density, and they did not have a differential response to immune mediators. MPO and EPO significantly increased the production of collagen 1. TGFB and TNFA induced variable changes in gene expression. Fibroblasts cultured in vitro from women with high mammographic density do not appear to be inherently different to those from women with low mammographic density. The function of fibroblasts in mammographic density-associated breast cancer risk is likely to be regulated by immune signals from surrounding cells in the microenvironment.https://www.mdpi.com/2077-0383/11/3/799mammographic densityfibroblastsbreast cancer riskimmune signalingstromaextracellular matrix |
| spellingShingle | Maddison Archer Pallave Dasari David Walsh Kara L. Britt Andreas Evdokiou Wendy V. Ingman Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic Density Journal of Clinical Medicine mammographic density fibroblasts breast cancer risk immune signaling stroma extracellular matrix |
| title | Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic Density |
| title_full | Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic Density |
| title_fullStr | Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic Density |
| title_full_unstemmed | Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic Density |
| title_short | Immune Regulation of Mammary Fibroblasts and the Impact of Mammographic Density |
| title_sort | immune regulation of mammary fibroblasts and the impact of mammographic density |
| topic | mammographic density fibroblasts breast cancer risk immune signaling stroma extracellular matrix |
| url | https://www.mdpi.com/2077-0383/11/3/799 |
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