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JCC: AlphaE整合素表达在克罗恩病患者回肠中增加并且不受炎症影响

2018-11-10 MedSci MedSci原创

最近的研究结果表明,αE整合素表达在效应T细胞上会明显富集,并且肠αE+T细胞具有增加的炎性细胞因子的表达。αE整合素表达是对etrolizumab反应的潜在预测生物标志物,etrolizumab是针对β4整合素的单克隆抗体,其靶向α4β7和αEβ7。研究人员在本项研究中评估了健康和炎症性肠病患者中αE+细胞的流行和定位以及总αE基因表达情况。

背景
最近的研究结果表明,αE整合素表达在效应T细胞上会明显富集,并且肠αE+T细胞具有增加的炎性细胞因子的表达。αE整合素表达是对etrolizumab反应的潜在预测生物标志物,etrolizumab是针对β4整合素的单克隆抗体,其靶向α4β7和αEβ7。研究人员在本项研究中评估了健康和炎症性肠病患者中αE+细胞的流行和定位以及总αE基因表达情况。

方法
研究人员通过免疫组织化学的方法在回肠和结肠活组织检查中鉴定αE+细胞,并使用自动算法计数。通过定量逆转录酶聚合酶链反应评估基因表达。

结果
在健康和炎症性肠病患者中,与结肠活组织检查相比,回肠的上皮和固有层中存在显着更多的αE+细胞。与结肠活组织检查相比,回肠中αE基因表达水平也显着更高。来自同一患者的成对活组织检查显示回肠和结肠之间αE表达存在相关性。炎症不影响αE表达,内窥镜检查和组织学评分均未与αE基因表达相关。

结论
在炎性肠病患者中,无论炎症状态或维持药物如何,αE水平都是稳定的,这可以支持其作为etrolizumab的生物标志物的用途。

原始出处:

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    2019-09-21 changfy
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    2019-05-02 yhy100200
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    2018-12-26 jiekemin
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    2018-11-12 Tamikia

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