Expression profile of Fc receptor-like molecules in patients with IgA nephropathy.

Abstract

BACKGROUND:

Fc receptor-like (FCRL) molecules were considered to play a role in the pathogenesis of certain autoimmune diseases. Nonetheless, the clinical significance of FCRLs in IgA nephropathy (IgAN) remains unclear.

OBJECTIVE:

This study is aimed at investigating the expression levels of FCRLs molecules in IgAN patients and determining its relevance to disease activity.

METHODS:

The mRNA expression levels of FCRLs were determined in peripheral blood mononuclear cells (PBMCs) of 42 IgAN patients and 48 healthy controls by quantitative real-time PCR (qRT-PCR). FCRLs proteins expression in B cells of 25 IgAN patients, 14 patients with non-IgAN glomerulonephritis, and 29 healthy controls were detected by Flow cytometry. The Spearman correlation test was used to assess the correlation of FCRLs expression with clinical parameters of IgAN patients.

RESULTS:

Our results indicated significant down-regulation of FCRL2 and FCRL3 mRNA levels in IgAN patients compared to healthy subjects. Surface protein expression of FCRLs molecules confirmed the qRT-PCR results. But FCRL2 and FCRL3 protein levels did not correlate with clinicopathologic phenotypes of IgAN patients. However, we found a significant positively correlation of FCRL2 and FCRL3 mRNA expression with the core 1 β1,3-galactosyltransferase (C1GALT1) and its molecular chaperone (Cosmc) mRNA levels in IgAN patients.

CONCLUSIONS:

FCRL2 and FCRL3 expression levels in IgAN patients are significantly decreased and correlated with CIGALT1 and Cosmc mRNA expression.

• Authors: Zhong Zhong, Dianchun Shi, Mengjiao Xiao, Dongying Fu, Shaozhen Feng, Qingyu Kong, Jianbo Li, Zhijian Li
• Journal: Human immunology (Hum Immunol) Vol. 82 Issue 3 Pg. 186-192 (Mar 2021) ISSN: 1879-1166 [Electronic] United States
• PMID: 33597097 (Publication Type: Journal Article)
• Copyright: Copyright © 2021 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved.

Chemical References

• C1GALT1C1 protein, human
• FCRL1 protein, human
• FCRL2 protein, human
• FCRL3 protein, human
• Membrane Proteins
• Molecular Chaperones
• Receptors, Cell Surface
• Receptors, Immunologic
• C1GALT1 protein, human
• Galactosyltransferases

Topics

• Adult
• Cells, Cultured
• Down-Regulation
• Female
• Galactosyltransferases (genetics, metabolism)
• Glomerulonephritis, IGA (genetics, metabolism)
• Humans
• Leukocytes, Mononuclear (metabolism, pathology)
• Male
• Membrane Proteins (genetics, metabolism)
• Middle Aged
• Molecular Chaperones (genetics, metabolism)
• Receptors, Cell Surface (genetics, metabolism)
• Receptors, Immunologic (genetics, metabolism)
• Transcriptome