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The IL-15 / sIL-15Rα complex modulates immunity without effect on asthma features in mouse.
Respiratory Research ( IF 5.8 ) Pub Date : 2020-01-29 , DOI: 10.1186/s12931-020-1301-x
Antoine Moui 1, 2 , Martin Klein 1 , Dorian Hassoun 1, 2 , Eléonore Dijoux 1 , Marie-Aude Cheminant 1 , Antoine Magnan 1, 2 , Grégory Bouchaud 3
Affiliation  

BACKGROUND Interleukin 15 (IL-15) is a growth and modulating factor for B, T lymphocytes and natural killer cells (NK). Its action on innate and adaptive immunity is modulated by its alpha chain receptor (IL-15Rα). The IL-15/sIL-15Rα complex (IL-15Cx) increases the bioavailability and activity of the cytokine in vivo. IL-15Cx has been used in diseases to dampen IL-15 inflammation by the use of soluble IL-15Ralpha specificity. Here, we aim to evaluate the interest of IL-15Cx in a mouse model of asthma. METHODS Using a mouse model of asthma consisting in percutaneous sensitization and intranasal challenge with total house dust mite extract, we evaluated the effect of IL-15Cx injected intraperitoneally four times after a first nasal challenge. Respiratory function was assessed by the technique of forced oscillations (Flexivent®). The effect on bronchial remodeling was evaluated by lung histology. The inflammatory status was analyzed by flow cytometry. RESULTS We observed that the IL-15Cx modulates lung and systemic inflammation by increasing NK cells, CD8+ memory T cells and regulatory cells. However, IL-15Cx displays no effect on bronchial hyperreactivity, bronchial remodeling nor cellular bronchial infiltrate, but limits the secretion of bronchial mucus and modulates only inflammatory response in a HDM-allergic asthma murine model. CONCLUSIONS IL-15Cx has a limited effect on immune response in asthma and has no effect on lung function in mice. Thus, it limits its therapeutic potential but might suggest a combinatory potential with other therapeutics.

中文翻译:

IL-15 /sIL-15Rα复合物可调节免疫力,而不会影响小鼠的哮喘特征。

背景技术白介素15(IL-15)是B,T淋巴细胞和自然杀伤细胞(NK)的生长和调节因子。它对先天和适应性免疫的作用由其α链受体(IL-15Rα)调节。IL-15 /sIL-15Rα复合物(IL-15Cx)可提高体内细胞因子的生物利用度和活性。通过使用可溶性IL-15Ralpha特异性,IL-15Cx已用于疾病中以减轻IL-15炎症。在这里,我们旨在评估IL-15Cx在哮喘小鼠模型中的兴趣。方法使用由全屋尘螨提取物经皮致敏和鼻内攻击组成的哮喘小鼠模型,我们评估了首次鼻腔攻击后四次腹膜内注射IL-15Cx的效果。呼吸功能通过强制振荡技术(Flexivent®)进行评估。通过肺组织学评估对支气管重塑的作用。通过流式细胞仪分析炎症状态。结果我们观察到IL-15Cx通过增加NK细胞,CD8 +记忆T细胞和调节细胞来调节肺和全身炎症。但是,IL-15Cx对支气管高反应性,支气管重塑或细胞性支气管浸润均无影响,但在HDM过敏性哮喘小鼠模型中限制了支气管粘液的分泌,仅调节炎症反应。结论IL-15Cx对哮喘免疫反应的作用有限,对小鼠肺功能没有影响。因此,它限制了它的治疗潜力,但可能暗示与其他疗法的组合潜力。结果我们观察到IL-15Cx通过增加NK细胞,CD8 +记忆T细胞和调节细胞来调节肺和全身炎症。但是,IL-15Cx对支气管高反应性,支气管重塑或细胞性支气管浸润均无影响,但在HDM过敏性哮喘小鼠模型中限制了支气管粘液的分泌,仅调节炎症反应。结论IL-15Cx对哮喘免疫反应的作用有限,对小鼠肺功能没有影响。因此,它限制了它的治疗潜力,但可能暗示与其他疗法的组合潜力。结果我们观察到IL-15Cx通过增加NK细胞,CD8 +记忆T细胞和调节细胞来调节肺和全身炎症。但是,IL-15Cx对支气管高反应性,支气管重塑或细胞性支气管浸润均无影响,但在HDM过敏性哮喘小鼠模型中限制了支气管粘液的分泌,仅调节炎症反应。结论IL-15Cx对哮喘免疫反应的作用有限,对小鼠肺功能没有影响。因此,它限制了它的治疗潜力,但可能暗示与其他疗法的组合潜力。支气管重塑或细胞性支气管浸润,但限制了HDM过敏性哮喘小鼠模型中支气管粘液的分泌,仅调节炎症反应。结论IL-15Cx对哮喘免疫反应的作用有限,对小鼠肺功能没有影响。因此,它限制了它的治疗潜力,但可能暗示与其他疗法的组合潜力。支气管重塑或细胞性支气管浸润,但限制了HDM过敏性哮喘小鼠模型中支气管粘液的分泌,仅调节炎症反应。结论IL-15Cx对哮喘免疫反应的作用有限,对小鼠肺功能没有影响。因此,它限制了它的治疗潜力,但可能暗示与其他疗法的组合潜力。
更新日期:2020-01-30
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