Melde Michaela, Müller Tanja M, Schneider Ines, Geppert Carol-Immanuel, Mühl Laura, Besendorf Laura, Allner Clarissa, Becker Emily, Atreya Imke, Vitali Francesco, Atreya Raja, Neurath Markus F, Zundler Sebastian
Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany.
Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany.
Therap Adv Gastroenterol. 2021 Nov 24;14:17562848211054707. doi: 10.1177/17562848211054707. eCollection 2021.
The anti-α4β7 integrin antibody vedolizumab is an established therapeutic option for the treatment of inflammatory bowel disease (IBD). It has also been successfully used in patients with chronic antibiotic-refractory pouchitis following proctocolectomey with ileal pouch-anal anastomosis. However, the expression and function of gut-homing markers as well as strategies to predict the response to vedolizumab in pouchitis are understudied so far.
We used flow cytometry and dynamic adhesion assays to study the expression and function of gut-homing integrins on T cells from patients with pouchitis and controls as well as longitudinally during therapy of pouchitis with vedolizumab. Moreover, we describe clinical effects of vedolizumab in a cohort of patients with pouchitis.
T cells from patients with pouchitis express a specific profile of gut-homing integrins. Integrin α4β7 on T cells from patients with pouchitis mediates adhesion to mucosal addressin cell adhesion molecule (MAdCAM)-1, which can be blocked by vedolizumab . Vedolizumab efficiently treats pouchitis in a portion of patients and response correlates with dynamic adhesion profiles to MAdCAM-1.
Our data suggest that T cell trafficking seems to be important for the pathogenesis of pouchitis and support the therapeutic use of vedolizumab. Integrin function might serve as a biomarker to predict response to vedolizumab.
抗α4β7整合素抗体维多珠单抗是治疗炎症性肠病(IBD)的既定治疗选择。它也已成功用于接受回肠储袋肛管吻合术的直肠结肠切除术后患有慢性抗生素难治性储袋炎的患者。然而,迄今为止,肠道归巢标志物的表达和功能以及预测储袋炎患者对维多珠单抗反应的策略尚未得到充分研究。
我们使用流式细胞术和动态黏附试验来研究储袋炎患者和对照者T细胞上肠道归巢整合素的表达和功能,以及在维多珠单抗治疗储袋炎期间的纵向变化。此外,我们描述了维多珠单抗在一组储袋炎患者中的临床疗效。
储袋炎患者的T细胞表达特定的肠道归巢整合素谱。储袋炎患者T细胞上的整合素α4β7介导对黏膜地址素细胞黏附分子(MAdCAM)-1的黏附,这可被维多珠单抗阻断。维多珠单抗可有效治疗部分患者的储袋炎,且反应与对MAdCAM-1的动态黏附谱相关。
我们的数据表明,T细胞迁移似乎对储袋炎的发病机制很重要,并支持维多珠单抗的治疗应用。整合素功能可能作为预测对维多珠单抗反应的生物标志物。