Immunohistochemical Expression of Discoidin Domain Receptor1 (DDR1) in Non-Neoplastic Skin Disease: A Systematic Review

Abstract

Background: The discoidin domain receptor-1 (DDR1) is a non-integrin collagen receptor recently implicated in the collective cell migration of other cancer types. Objective: To review the immunohistochemical expression of discoidin domain receptor1 (DDR1) in non-neoplastic skin disease. Data Sources: A systematic search of MEDLINE (PubMed, Medscape, Science Direct. EMF-Portal) and internet was conducted on all articles published from 2002 to 2021. Study Selection: English-language reports of immunohistochemical expression of DDR1 on non-neoplastic skin disease. The initial search presented 90 articles where 30 studies had the inclusion criteria. Then, they were divided into 12 studies about immunopathogenesis of non-neoplastic skin disease, 9 studies about expression of discoidin domain receptor1 and 9 studies emphasized DDR1 expression in non-neoplastic skin disease. Data Extraction: Articles not reporting on immunohistochemical expression of DDR1 in non-neoplastic skin disease in the title or abstract were not included. 9 independent investigators extracted data on methods. Findings: Interaction of DDR1 with various receptors is important for the regulation of cell survival, migration, and differentiation in development and pathological conditions. The discovery of inhibitors of DDR1 kinase activity might be beneficial in several pathological conditions where DDR1 has been identified as a potential therapeutic target. Conclusion: Our review reported that the knowledge of the main cells and cytokines involved in the immunopathogenesis of non-neoplastic skin disease is essential for dermatologists to understand better the disease as well as the mechanism of action of the biologics, drugs that revolutionized the treatment of non-neoplastic skin disease in the last two decades.