Interleukin 1 receptor antagonist mediates the antiinflammatory and antifibrotic effect of mesenchymal stem cells during lung injury
| Autor: | Kristina Go, Luis A. Ortiz, Cheryl L. Fattman, Amitabh C Pandey, Maria F. Dutreil, Donald G. Phinney, German Torres |
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| Rok vydání: | 2007 |
| Předmět: |
Lung Diseases
Male T cell Biology Lung injury Proinflammatory cytokine Mice Bone Marrow Interleukin-1alpha medicine Animals Inflammation Mice Inbred BALB C Multidisciplinary medicine.diagnostic_test Tumor Necrosis Factor-alpha Mesenchymal stem cell Interleukin Mesenchymal Stem Cells Biological Sciences Fibrosis Interleukin 1 Receptor Antagonist Protein medicine.anatomical_structure Interleukin 1 receptor antagonist Bronchoalveolar lavage Immunology Cancer research Tumor necrosis factor alpha |
| Zdroj: | Proceedings of the National Academy of Sciences. 104:11002-11007 |
| ISSN: | 1091-6490 0027-8424 |
| Popis: | Mesenchymal stem cells (MSCs) have been exploited as cellular vectors to treat a wide array of diseases but the mechanisms responsible for their therapeutic effect remain indeterminate. Previously, we reported that MSCs inhibit bleomycin (BLM)-induced inflammation and fibrosis within the lungs of mice. Interrogation of the MSC transcriptome identified interleukin 1 receptor antagonist (IL1RN) as a potential mediator of this effect. Fractionation studies indicated that MSCs are the principal source of IL1RN in murine bone marrow and that its expression is restricted to a unique subpopulation of cells. Moreover, MSC-conditioned media was shown to block proliferation of an IL-1α-dependent T cell line and inhibit production of TNF-α by activated macrophages in vitro . Studies conducted in mice revealed that MSC administration was more effective than recombinant IL1RN delivered via adenoviral infection or osmotic pumps in inhibiting BLM-induced increases in TNF-α, IL-1α, and IL1RN mRNA in lung, IL1RN protein in bronchoalveolar lavage (BAL) fluid, and trafficking of lymphocytes and neutrophils into the lung. Therefore, MSCs protect lung tissue from BLM-induced injury by blocking TNF-α and IL-1, two fundamental proinflammatory cytokines in lung. Identification of IL1RN-expressing human MSC subpopulations may provide a novel cellular vector for treating chronic inflammatory diseases in humans. |
| Databáze: | OpenAIRE |
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