发布: 2018年10月05日第8卷第19期 DOI: 10.21769/BioProtoc.3032 浏览次数: 9330
评审: Ruth A. FranklinFrancesco BorrielloXiaoping Xie
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Marlene Bravo-Parra [...] Luis G. Giménez-Lirola
2025年06月05日 1213 阅读
Abstract
Group 2 Innate Lymphoid Cells (ILC2) play an important role in immune responses at barrier surfaces, notably in the lung during airway allergic inflammation or asthma. Several studies have described methods to isolate ILC2s from wild-type naive mice, most of them using cell sorting to obtain a pure population. Here, we describe in detail, a simple, efficient method for isolation and culture of lung mouse ILC2s. Lungs from Rag2-/- mice pretreated with IL-33 are collected and processed into single cell suspensions. Lymphoid cells are then recovered by density gradient separation. Lin-CD45+ cells are selected by depletion of lineage positive cells followed by positive selection of CD45+ cells. Culture of the isolated cells for several days results in a highly purified ILC2 population expressing typical cell surface markers (CD90.2, Sca1, CD25, CD127, and IL-33R). These cells can be expanded in culture for up to 10 days and used for diverse ex vivo assays or in vivo adoptive transfer experiments.
Keywords: Innate immunity (先天免疫)Background
Group 2 Innate Lymphoid Cells (ILC2) are tissue resident cells that play crucial roles in anti-parasitic innate immunity as well as in the development of allergic inflammation. They respond to epithelial cell-derived cytokines such as interleukin-33 (IL-33) by producing large amounts of type 2 cytokines IL-5 and IL-13, which in turn induce eosinophilia and mucus production (Cayrol and Girard, 2018). In order to better characterize the function and regulation of these cells, numerous groups have sorted ILC2s from the lung of wild-type mice (WT) by fluorescence-activated cell sorting (FACS). Due to the low number of the ILC2s present in the lungs at steady state, this method results in a low yield of purified cells (1 x 104 per mouse) (for a review, see Moro et al., 2015). In the present protocol, we pretreat mice with IL-33, which triggers the in vivo expansion of lung ILC2s, resulting in a better yield of purified cells (1.3 x 106 per mouse). Moreover, we use Rag2-/- mice instead of WT mice because 1) the absence of B and T cells in these mice facilitates the purification of ILC2s, and 2) the number of ILC2s is greater in these mice. Culture of the isolated Lin-CD45+ cell population for a couple of days ex vivo provides highly purified lung ILC2s without the need to use a cell sorter. In summary, the procedure we describe is highly reproducible and provides abundant highly purified mouse lung ILC2s.
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文章信息
版权信息
© 2018 The Authors; exclusive licensee Bio-protocol LLC.
如何引用
Schmitt, P., Duval, A., Mirey, E., Girard, J. and Cayrol, C. (2018). Isolation and Culture of Mouse Lung ILC2s. Bio-protocol 8(19): e3032. DOI: 10.21769/BioProtoc.3032.
分类
免疫学 > 免疫细胞分离 > 淋巴细胞
细胞生物学 > 细胞分离和培养 > 细胞分离
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