金黄色葡萄球菌溶解酸诱导IgE反应通过记忆B细胞在鼻的息肉
Kun Du1, Yan Zhao2, Xin Zhang3
1Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Department of Otolaryngology-Head and Neck Surgery, Eye & ENT Hospital, Fudan University, Shanghai, China.
The Journal of allergy and clinical immunology
|December 6, 2023
概括
黄金葡萄球菌通过IgE阴性记忆B细胞刺激慢性鼻炎与鼻息肉 (CRSwNP) 患者的IgE产生. 这种反应可能有助于CRSwNP的发展和复发.
科学领域:
- 免疫学 免疫学 免疫学
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 微生物学 微生物学
背景情况:
- 免疫球蛋白E (IgE) 水平升高与鼻息肉性慢性鼻炎 (CRSwNP) 的病理有关.
- 黄金葡萄球菌在CRSwNP中异常IgE合成中的作用需要进一步阐明.
研究的目的:
- 确定金黄色葡萄球菌是否可以诱导CRSwNP中的异常IgE产生.
- 研究CRSwNP中S. aureus诱导的IgE合成的潜在机制.
主要方法:
- 与酶相关的免疫吸收试验 (ELISA) 测量了IgE,IL-4,IL-5和IL-13.
- 单细胞RNA测序分析了S. aureus诱导的细胞反应.
- 流细胞计和定量逆转录PCR评估了B细胞子集和生殖系转录表达.
- 免疫组织化学和免疫光评估了IgE阳性B细胞和生殖中心定位.
主要成果:
- 黄金酸盐刺激了鼻息肉组织中的IgE产生,与健康的粘膜不同.
- 刺激后IgE水平,芽细胞转录,IL-5和IL-13的表达增加.
- 单细胞RNA测序确定了IgE负IgE记忆B细胞的IgE产生,并在2组先天性淋巴细胞中增加了IL-5/IL-13.
- 黄金菌诱导的IgE记忆反应与鼻,喘和复发中的IgE升高相关.
结论:
- 在CRSwNP患者中,S. aureus会触发由IgE负记忆B细胞介导的IgE反应.
- 这种机制可能在CRSwNP的发病和进展中发挥作用.
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