Collagen XIII induced in vascular endothelium mediates α1β1 integrin-dependent transmigration of monocytes in renal fibrosis

Jameel Dennis, Daniel T. Meehan, Duane Delimont, Marisa L Zallocchi, Greg A. Perry, Stacie O'Brien, Hongmin Tu, Taina Pihlajaniemi, Dominic E Cosgrove

Research output: Contribution to journalArticle

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Abstract

Alport syndrome is a common hereditary basement membrane disorder caused by mutations in the collagen IV α3, α4, or α5 genes that results in progressive glomerular and interstitial renal disease. Interstitial monocytes that accumulate in the renal cortex from Alport mice are immunopositive for integrin α1β1, while only a small fraction of circulating monocytes are immunopositive for this integrin. We surmised that such a disparity might be due to the selective recruitment of α1β1-positive monocytes. In this study, we report the identification of collagen XIII as a ligand that facilitates this selective recruitment of α1β1 integrin-positive monocytes. Collagen XIII is absent in the vascular endothelium from normal renal cortex and abundant in Alport renal cortex. Neutralizing antibodies against the binding site in collagen XIII for α1β1 integrin selectively block VLA1-positive monocyte migration in transwell assays. Injection of these antibodies into Alport mice slows monocyte recruitment and protects against renal fibrosis. Thus, the induction of collagen XIII in endothelial cells of Alport kidneys mediates the selective recruitment of α1β1 integrin-positive monocytes and may potentially serve as a therapeutic target for inflammatory diseases in which lymphocyte/monocyte recruitment involves the interaction with α1β1 integrin.

Original languageEnglish (US)
Pages (from-to)2527-2540
Number of pages14
JournalAmerican Journal of Pathology
Volume177
Issue number5
DOIs
StatePublished - Jan 1 2010

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Vascular Endothelium
Integrins
Monocytes
Fibrosis
Collagen
Kidney
Hereditary Nephritis
Antibody Binding Sites
Neutralizing Antibodies
Basement Membrane
Endothelial Cells
Lymphocytes
Ligands
Mutation
Injections
Antibodies
Genes

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Collagen XIII induced in vascular endothelium mediates α1β1 integrin-dependent transmigration of monocytes in renal fibrosis. / Dennis, Jameel; Meehan, Daniel T.; Delimont, Duane; Zallocchi, Marisa L; Perry, Greg A.; O'Brien, Stacie; Tu, Hongmin; Pihlajaniemi, Taina; Cosgrove, Dominic E.

In: American Journal of Pathology, Vol. 177, No. 5, 01.01.2010, p. 2527-2540.

Research output: Contribution to journalArticle

Dennis, Jameel ; Meehan, Daniel T. ; Delimont, Duane ; Zallocchi, Marisa L ; Perry, Greg A. ; O'Brien, Stacie ; Tu, Hongmin ; Pihlajaniemi, Taina ; Cosgrove, Dominic E. / Collagen XIII induced in vascular endothelium mediates α1β1 integrin-dependent transmigration of monocytes in renal fibrosis. In: American Journal of Pathology. 2010 ; Vol. 177, No. 5. pp. 2527-2540.
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