期刊
RHEUMATOLOGY
卷 62, 期 3, 页码 999-1008出版社
OXFORD UNIV PRESS
DOI: 10.1093/rheumatology/keac451
关键词
SSc; fibrosis; exosomes; paracrine; myofibroblasts; endothelial cells; cellular phenotype
类别
SSc is a systemic autoimmune disease characterized by progressive fibrosis that affects the skin and internal organs, leading to severe disability and high mortality. Recent research suggests that the extension of fibrosis may be mediated by exosome microvesicles released from SSc-affected cells.
SSc is a systemic autoimmune disease of unknown etiology characterized by frequently progressive cutaneous and internal organ fibrosis causing severe disability, organ failure and high mortality. A remarkable feature of SSc is the extension of the fibrotic alterations to nonaffected tissues. The mechanisms involved in the extension of fibrosis have remained elusive. We propose that this process is mediated by exosome microvesicles released from SSc-affected cells that induce an activated profibrotic phenotype in normal or nonaffected cells. Exosomes are secreted microvesicles involved in an intercellular communication system. Exosomes can transfer their macromolecular content to distant target cells and induce paracrine effects in the recipient cells, changing their molecular pathways and gene expression. Confirmation of this hypothesis may identify the molecular mechanisms responsible for extension of the SSc fibrotic process from affected cells to nonaffected cells and may allow the development of novel therapeutic approaches for the disease.
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