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Differences in pulmonary innate lymphoid cells are dependent on mouse age, sex and strain
bioRxiv - Immunology Pub Date : 2020-10-26 , DOI: 10.1101/2020.10.25.354464
Svenja Loering , Guy J. M Cameron , Nirmal P Bhatt , Gabrielle T Belz , Paul S Foster , Philip M Hansbro , Malcolm R Starkey

Innate lymphoid cells (ILC) are resident in the lung and are involved in both the maintenance of homeostasis and the pathogenesis of respiratory diseases. In this study, murine lung ILC were characterised using flow cytometry and the impact of mouse age, sex and strain were assessed. Lung ILC were found as early as postnatal day 4 and numbers peaked at 2 weeks, and then decreased as the lung matured. During postnatal lung development, ILC expressed differential amounts of ILC2-associated cell surface antigens including ST2, CD90.2 and ICOS. Using Il5venusIl13td-tomato dual reporter mice, neonates were found to have increased constitutive IL-13 expression compared to adult mice. Neonates and adults had similar ratios of IL-5+CD45+ leukocytes, however, these cells were mostly composed of ILC in neonates and T cells in adults. Sex-specific differences in ILC numbers were also observed, with females having greater numbers of lung ILC than males in both neonatal and adult mice. Female lung ILC also expressed higher levels of ICOS and decreased KLRG1. Mouse strain also impacted on lung ILC with BALB/c mice having more ILC in the lung and increased expression of ST2 and ICOS compared with C57BL/6J mice. Collectively, these data show that lung ILC numbers, cell surface antigen expression, IL-5 and IL-13 levels differed between neonatal and adult lung ILC. Additionally, cell surface antigens commonly used for ILC2 quantification, such as ST2, CD90.2, and ICOS, differ depending on age, sex and strain and these are important considerations for consistent universal identification of lung ILC2.

中文翻译:

肺先天淋巴样细胞的差异取决于小鼠的年龄,性别和品系

先天性淋巴样细胞(ILC)驻留在肺中,并且参与体内稳态的维持和呼吸系统疾病的发病机制。在这项研究中,使用流式细胞仪表征了鼠肺ILC,并评估了小鼠年龄,性别和品系的影响。肺ILC早在出生后第4天就发现,并且在2周时达到峰值,然后随着肺成熟而下降。在产后肺发育过程中,ILC表达不同量的ILC2相关细胞表面抗原,包括ST2,CD90.2和ICOS。使用Il5venusIl13td-tomato双重报告基因小鼠,发现新生小鼠与成年小鼠相比,其IL-13组成型表达增加。新生儿和成人的IL-5 + CD45 +白细胞比例相似,但是这些细胞主要由新生儿中的ILC和成人中的T细胞组成。还观察到了ILC数量的性别特异性差异,在新生小鼠和成年小鼠中,雌性的肺ILC数量均多于雄性。女性肺部ILC也表达较高水平的ICOS和降低KLRG1。与C57BL / 6J小鼠相比,BALB / c小鼠在肺中具有更多的ILC并增加了ST2和ICOS的表达,因此小鼠品系也影响了肺ILC。总的来说,这些数据表明,新生儿和成人肺ILC之间的肺ILC数量,细胞表面抗原表达,IL-5和IL-13水平不同。此外,常用于ILC2定量的细胞表面抗原(如ST2,CD90.2和ICOS)根据年龄,性别和品系而有所不同,这些是对肺ILC2进行一致通用鉴定的重要考虑因素。在新生小鼠和成年小鼠中,雌性小鼠的肺ILC数量均大于雄性。女性肺部ILC也表达较高水平的ICOS和降低KLRG1。与C57BL / 6J小鼠相比,BALB / c小鼠在肺中具有更多的ILC并增加了ST2和ICOS的表达,因此小鼠品系也对肺ILC产生了影响。总的来说,这些数据表明,新生儿和成人肺ILC之间的肺ILC数量,细胞表面抗原表达,IL-5和IL-13水平不同。此外,常用于ILC2定量的细胞表面抗原(如ST2,CD90.2和ICOS)根据年龄,性别和品系而有所不同,这些是对肺ILC2进行一致通用鉴定的重要考虑因素。在新生小鼠和成年小鼠中,雌性小鼠的肺ILC数量均大于雄性。女性肺部ILC也表达较高水平的ICOS和降低KLRG1。与C57BL / 6J小鼠相比,BALB / c小鼠在肺中具有更多的ILC并增加了ST2和ICOS的表达,因此小鼠品系也对肺ILC产生了影响。总的来说,这些数据表明,新生儿和成人肺ILC之间的肺ILC数量,细胞表面抗原表达,IL-5和IL-13水平不同。此外,常用于ILC2定量的细胞表面抗原(如ST2,CD90.2和ICOS)根据年龄,性别和品系而有所不同,这些是对肺ILC2进行一致通用鉴定的重要考虑因素。与C57BL / 6J小鼠相比,BALB / c小鼠在肺中具有更多的ILC并增加了ST2和ICOS的表达,因此小鼠品系也对肺ILC产生了影响。总的来说,这些数据表明,新生儿和成人肺ILC之间的肺ILC数量,细胞表面抗原表达,IL-5和IL-13水平不同。此外,常用于ILC2定量的细胞表面抗原(如ST2,CD90.2和ICOS)根据年龄,性别和品系而有所不同,这些是对肺ILC2进行一致通用鉴定的重要考虑因素。与C57BL / 6J小鼠相比,BALB / c小鼠在肺中具有更多的ILC并增加了ST2和ICOS的表达,因此小鼠品系也对肺ILC产生了影响。总的来说,这些数据表明,新生儿和成人肺ILC之间的肺ILC数量,细胞表面抗原表达,IL-5和IL-13水平不同。此外,常用于ILC2定量的细胞表面抗原(如ST2,CD90.2和ICOS)根据年龄,性别和品系而有所不同,这些是对肺ILC2进行一致通用鉴定的重要考虑因素。
更新日期:2020-10-27
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