CYR61 (CCN1) overexpression induces lung injury in mice
Year: 2015
Type: article
Abstract: Cysteine-rich protein-61 (CYR61), also known as connective tissue growth factor, CYR61, and nephroblastoma overexpressed gene 1 (CCN1), is a heparin-binding protein member of the CCN family of matricellular proteins. Gene expression profiles showed that Cyr61 is upregulated in human acute lung injury (ALI), but its functional role is unclear. We hypothesized that CYR61 contributes to ALI in mice. First, we demonstrated that CYR61 expression increases after bleomycin-induced lung injury. We then used adenovirus-mediated gene transfer to determine whether CYR61 overexpression in the lungs was sufficient to cause ALI. Mice instilled with CYR61 adenovirus showed greater weight loss, increased bronchoalveolar lavage total neutrophil counts, increased protein concentrations, and increased mortality compared with mice instilled with empty-vector adenovirus. Immunohistochemical studies in lungs from humans with idiopathic pulmonary fibrosis revealed CYR61 expression on the luminal membrane of alveolar epithelial cells in areas of injury. We conclude that CYR61 is upregulated in ALI and that CYR61 overexpression exacerbates ALI in mice.
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: green
Awards: Syndecan-1 Regulations of Influenza Infection, Role of CCN1 in pulmonary fibrosis, G3114937999, G3837704652, Syndecan-1 in Lung Repair, G4826510252, Pericyte-endothelial cross talk in vascular stability after kidney injury, Acute Lung Injury: Link Between Apoptosis and Fibrosis , Mechanisms of innate immune response modulation by mechanical ventilation, G791456252
OpenAlex ID: W2324081175