ArticleJournal of cellular and molecular medicine2021
The importance of sialic acid, pH and ion concentration on the interaction of uromodulin and complement factor H.
Article in Journal of cellular and molecular medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 7 citations in OpenAlex.
- Mutations in UMOD Contribute to the Pathogenesis of ADTKD-UMOD by Influencing the Function of Complement Factor H.Journal of cellular and molecular medicine · 2026Article
- Uromodulin alleviates fibrosis in acute kidney injury to chronic kidney disease transition by reducing EGFR.Cell communication and signaling : CCS · 2025Article
- Discovery and characterization of vertebrate sialoglycan-binding proteins.Seminars in immunology · 2025Review
- PolySialic Acid Nanoparticles Actuate Complement-Factor-H-Mediated Inhibition of the Alternative Complement Pathway: A Safer Potential Therapy for Age-Related Macular Degeneration.Pharmaceuticals (Basel, Switzerland) · 2024Article
- The Reduction of Uromodulin, Complement Factor H, and Their Interaction Is Associated with Acute Kidney Injury to Chronic Kidney Disease Transition in a Four-Time Cisplatin-Injected Rat Model.International journal of molecular sciences · 2023Article
- The importance of sialic acid, pH and ion concentration on the interaction of uromodulin and complement factor H.Journal of cellular and molecular medicine · 2021Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
Uromodulin (UMOD) can bind complement factor H (cFH) and inhibit the activation of complement alternative pathway (AP) by enhancing the cofactor activity of cFH on degeneration of C3b. UMOD, an N-glycans-rich glycoprotein, is expressed in thick ascending limb of Henle's loop where the epithelia need to adapt to gradient change of pH and ion concentration. ELISA-based cofactor activity of cFH and erythrocytes haemolytic assay was used to measure the impact of native and de-glycosylated UMOD on the functions of cFH. The binding assay was performed under different pH and ion concentrations, using ELISA. The levels of sialic acid on UMOD, from healthy controls and patients with chronic kidney disease (CKD), were also detected by lectin-ELISA. It was shown that removal of glycans decreased the binding between UMOD and cFH and abolished the ability of enhancing C3b degradation. In acidic condition, the binding became stronger, but it reduced as sodium concentration increased. A significant decrease of α-2,3 sialic acids on UMOD was observed in CKD patients compared with that of healthy individuals. The sialic acids on UMOD, local pH and sodium concentration could impact the binding capacity between UMOD and cFH and thus regulate the activation of complement AP.
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Registered trials
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