The Role of Discoidin Domain Receptor 1 in Inflammation, Fibrosis and Renal Disease

Discoidin domain receptors (DDRs) are a family of 2 non-integrin collagen receptors, DDR1 and DDR2, which display a tyrosine kinase activity. They are mainly expressed during embryonic development and their role during adulthood is very limited. DDR1 has been widely studied in several types of cancers, in atherosclerosis and fibrosis, but also in chronic kidney disease (CKD). This review focuses on the role of DDR1 in chronic nephropathies and on the effect of its deletion in the pathological processes involved in renal disease progression. DDR1 was shown to be de novo expressed in several models of experimental CKD. Its genetic or pharmaco-genetic inhibition led to the preservation of renal structure and function, and to decreased inflammatory influx and fibrosis. Furthermore, delayed pha...

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