首页> 外文期刊>Clinical immunology: The official journal of the Clinical Immunology Society >Differential expression of glycogenes in tonsillar B lymphocytes in association with proteinuria and renal dysfunction in IgA nephropathy.
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Differential expression of glycogenes in tonsillar B lymphocytes in association with proteinuria and renal dysfunction in IgA nephropathy.

机译:IgA肾病中扁桃体B淋巴细胞糖蛋白的差异表达与蛋白尿和肾功能不全有关。

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摘要

Aberrant O-glycosylation of serum and tonsillar IgA1 is one of the main pathogeneses of IgA nephropathy (IgAN). However, the synthesis of underglycosylated IgA1 in tonsils has not yet been characterized. This study examined tonsillar B lymphocytes of IgAN (n=34) using tonsils derived from patients with chronic tonsillitis (n=24) and sleep apnea syndrome (n=14) as a control. Gene expression of beta1,3-galactosyltransferase (beta3GalT), and the core 1 beta3GalT-specific molecular chaperone, Cosmc, UDP-N-acetyl-alpha-D-galactosamine: polypeptide N-acetylgalactosaminyl-transferase 2, were significantly decreased in tonsillar CD19-positive B lymphocytes from IgAN patients compared to control tonsillar tissues as determined by real-time RT-PCR. Tonsillar B cell beta3GalT gene expression significantly correlated with estimated GFR and negatively correlated with proteinuria and histological injury score. Western blotting showed the protein expression of beta3GalT in the tonsils to significantly decrease in IgAN in comparison to the controls. These data suggest the downregulation of beta3GalT in tonsillar B lymphocytes to be closely associated with the clinical characteristics of IgAN.
机译:血清和扁桃体IgA1的异常O-糖基化是IgA肾病(IgAN)的主要病原体之一。然而,扁桃体中糖基化不足的IgA1的合成尚未被表征。这项研究使用慢性扁桃体炎(n = 24)和睡眠呼吸暂停综合症(n = 14)患者的扁桃体检查了IgAN的扁桃体B淋巴细胞(n = 34)。扁桃体CD19中的beta1,3-半乳糖基转移酶(beta3GalT)和核心1 beta3GalT特异性分子伴侣,Cosmc,UDP-N-乙酰-α-D-半乳糖胺的基因表达:多肽N-乙酰半乳糖胺基转移酶2显着降低通过实时RT-PCR测定,与对照扁桃体组织相比,IgAN患者的B细胞阳性B淋巴细胞。扁桃体B细胞beta3GalT基因表达与估计的GFR显着相关,而与蛋白尿和组织损伤评分负相关。 Western印迹显示与对照组相比,扁桃体中的beta3GalT蛋白表达明显降低。这些数据表明扁桃体B淋巴细胞中beta3GalT的下调与IgAN的临床特征密切相关。

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