IL-27 induces LL-37/CRAMP expression from intestinal epithelial cells: implications for immunotherapy of Clostridioides difficile infection.

IL-27 induces LL-37/CRAMP expression from intestinal epithelial cells: implications for immunotherapy of Clostridioides difficile infection.
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IL-27 诱导肠上皮细胞表达 LL-37/CRAMP:对艰难梭菌感染免疫治疗的影响

DOI:
10.1080/19490976.2021.1968258
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发表时间:
2021-01
期刊:
影响因子:
12.2
通讯作者:
Cao J
Cao J
中科院分区:
医学2区
文献类型:
--
作者:
Xu B;Wu X;Gong Y;Cao J

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摘要 艰难梭菌感染目前是全世界医院内抗生素相关性腹泻和伪膜性结肠炎的主要原因。 Cathelicidins 是一类主要的天然抗菌肽,在艰难梭菌感染中具有抗菌和免疫调节活性。在这里,我们发现细胞因子 IL-27 诱导原代人结肠上皮细胞中人导管素抗菌肽 (LL-37) 的表达。 IL-27受体缺陷型小鼠在艰难梭菌感染后,抗菌素相关抗菌肽(CRAMP,人LL-37的小鼠同源物)的表达受损,而在艰难梭菌攻击后,恢复CRAMP可改善艰难梭菌清除率并降低IL-27受体缺陷型小鼠的死亡率。在 119 名艰难梭菌感染患者的临床样本中,血清和粪便中 IL-27 水平升高与 LL-37 呈正相关。这些发现表明,IL-27 可能通过诱导 LL-37/CRAMP 参与宿主针对艰难梭菌感染的免疫。因此,IL-27-LL-37轴可能是免疫治疗发展中的一个有价值的途径。
ABSTRACT Clostridioides difficile infection is currently the leading cause of nosocomial antibiotic-associated diarrhea and pseudomembranous colitis worldwide. Cathelicidins, a major group of natural antimicrobial peptides, have antimicrobial and immunomodulatory activities in Clostridioides difficile infection. Here, we have shown that cytokine IL-27 induced human cathelicidin antimicrobial peptide (LL-37) expression in primary human colonic epithelial cells. IL-27 receptor-deficient mice had impaired expression of cathelicidin-related antimicrobial peptide (CRAMP, mouse homolog for human LL-37) after Clostridioides difficile infection, and restoration of CRAMP improved Clostridium difficile clearance and reduced mortality in IL-27 receptor-deficient mice after Clostridioides difficile challenge. In clinical samples from 119 patients with Clostridioides difficile infection, elevated levels of IL-27 were positively correlated with LL-37 in the sera and stools. These findings suggest that IL-27 may be involved in host immunity against Clostridioides difficile infection via induction of LL-37/CRAMP. Therefore, IL-27-LL-37 axis may be a valuable pathway in the development of immune-based therapy.
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