Abstract
Transfusion-related acute lung injury (TRALI) is the leading cause of transfusion-related fatalities and is characterized by acute respiratory distress following blood transfusion. Donor antibodies are frequently involved; however, the pathogenesis and protective mechanisms in the recipient are poorly understood, and specific therapies are lacking. Using newly developed murine TRALI models based on injection of anti-major histocompatibility complex class I antibodies, we found CD4+CD25+FoxP3+ T regulatory cells (Tregs) and CD11c+ dendritic cells (DCs) to be critical effectors that protect against TRALI. Treg or DC depletion in vivo resulted in aggravated antibody-mediated acute lung injury within 90 minutes with 60% mortality upon DC depletion. In addition, resistance to antibody-mediated TRALI was associated with increased interleukin-10 (IL-10) levels, and IL-10 levels were found to be decreased in mice suffering from TRALI. Importantly, IL-10 injection completely prevented and rescued the development of TRALI in mice and may prove to be a promising new therapeutic approach for alleviating lung injury in this serious complication of transfusion.
| Original language | English |
|---|---|
| Pages (from-to) | 2557-2569 |
| Number of pages | 13 |
| Journal | Blood |
| Volume | 129 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2017 |
Subject classification (UKÄ)
- Immunology in the Medical Area (including Cell and Immunotherapy)
Free keywords
- Acute Lung Injury
- Animals
- Antibodies
- Dendritic Cells
- Interleukin-10
- Mice
- Mice, Inbred BALB C
- Mice, Knockout
- T-Lymphocytes, Regulatory
- Transfusion Reaction
- Journal Article
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