Hyaluronidase recruits mesenchymal-like cells to the lung and ameliorates fibrosis

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Abstract

Hyaluronidases (HYALs) comprise a group of enzymes that degrade hyaluronic acid (HA). In this report, we reveal that a single intranasal inoculation of HYAL induces an increase in mononuclear cells within the bronchoalveolar space demonstrating a mesenchymal-like phenotype, expressing stem cell antigen-1 (SCA-1), CD44 and CD73 but not CD34, CD45, CD3, CD4, CD8 or CD19. This influx of mesenchymal stem cell (MSC)-like cells was dependent on leukotriene production within the lung parenchyma. These findings prompted experiments demonstrating that HYAL treatment potently blocked bleomycin-induced lung injury and fibrosis while decreasing transforming growth factor (TGF)-β production and collagen deposition. These data suggest that HYAL is a novel and promising tool to use autologous MSC-like cells in the treatment of pulmonary fibrosis. © 2011 Bitencourt et al; licensee BioMed Central Ltd.

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Bitencourt, C. S., Pereira, P. A. T., Ramos, S. G., Sampaio, S. V., Arantes, E. C., Aronoff, D. M., & Faccioli, L. H. (2011). Hyaluronidase recruits mesenchymal-like cells to the lung and ameliorates fibrosis. Fibrogenesis and Tissue Repair, 4(1). https://doi.org/10.1186/1755-1536-4-3

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