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Company: STEMCELL Technologies
Catalog#: 18000
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Isolation and Culture of Mouse Lung ILC2s
Author:
Date:
2018-10-05
[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 ... [摘要]  第2组先天性淋巴细胞(ILC2)在屏障表面,特别是在气道过敏性炎症或哮喘期间的肺中的免疫应答中起重要作用。一些研究已经描述了从野生型幼稚小鼠中分离ILC2的方法,其中大多数使用细胞分选来获得纯种群。在这里,我们详细描述了一种简单有效的肺小鼠ILC2分离和培养方法。收集用IL-33预处理的 Rag2 - / - 小鼠的肺并加工成单细胞悬浮液。然后通过密度梯度分离回收淋巴样细胞。通过耗尽谱系阳性细胞然后阳性选择CD45 + 细胞来选择Lin - CD45 + 细胞。将分离的细胞培养数天导致高度纯化的ILC2群体表达典型的细胞表面标志物(CD90.2,Sca1,CD25,CD127和IL-33R)。这些细胞可在培养物中扩增长达10天,并用于多种离体测定或体内过继转移实验。
【背景】第2组先天性淋巴细胞(ILC2)是组织驻留细胞,其在抗寄生虫先天免疫以及过敏性炎症的发展中起关键作用。它们通过产生大量的2型细胞因子IL-5和IL-13对上皮细胞衍生的细胞因子如白细胞介素-33(IL-33)起反应,后者又诱导嗜酸性粒细胞增多和粘液产生(Cayrol和Girard,2018)。为了更好地表征这些细胞的功能和调节,许多组通过荧光激活细胞分选(FACS)从野生型小鼠(WT)的肺中分选ILC2。由于稳定状态下肺中存在的ILC2数量较少,因此该方法导致纯化细胞的产量较低(每只小鼠1×10 ...

Generation of Busulfan Chimeric Mice for the Analysis of T Cell Population Dynamics
Author:
Date:
2017-12-20
[Abstract]  This protocol was developed to generate chimeric mice in which T lymphocytes could be stratified by age on the basis of congenic marker expression. The conditioning drug busulfan is used to ablate host haematopoietic stem cells while leaving the peripheral immune system intact. Busulfan treatment is followed by bone marrow transplantation (BMT), with T-cell depleted donor bone marrow bearing a different congenic marker (CD45.2) to that of the host mouse (CD45.1). New cell production post-BMT can thus be tracked by measuring the fraction of CD45.2+ cells over time within a population of interest (Hogan et al., 2015; Gossel et al., 2017). [摘要]  该方案被开发用于生成嵌合小鼠,其中T淋巴细胞可以根据同基因标志物表达的年龄进行分层。 白藜芦醇调理药物用于消融宿主造血干细胞,同时使外周免疫系统保持完整。 接受白消安治疗的是骨髓移植(BMT),T细胞耗竭的供体骨髓携带与宿主小鼠(CD45.1)不同的同基因标记(CD45.2)。 因此可以通过在感兴趣的群体内随时间测量CD45.2 +细胞的比例来追踪新的细胞生成后BMT(Hogan等人,2015; Gossel ,2017)。

【背景】骨髓嵌合体是研究免疫系统发育和功能的有价值的工具。典型地,通过照射宿主小鼠然后用供体骨髓移植产生嵌合体。辐射对造血系统造成相当大的损害,并且完全免疫重建在移植后延迟数周至数月(Fry和Mackall,2005)。由此产生的淋巴细胞减少期促使幼稚T细胞的自发性增殖和获得类似记忆的表型(Goldrath等人,2004)。为了避免辐射引起的免疫稳态的紊乱,我们把注意力转向调理药物白消安。白消安是一种烷化剂,对造血干细胞(HSC)有毒性,但不会耗竭循环淋巴细胞(Westerhof等人,2000; Hsieh等人,2007) 。在白消安调理和骨髓移植(BMT)之后,嵌合体与未处理的对照没有区别:它们具有正常数量的幼稚和记忆CD4和CD8T细胞,并且这些细胞表达增殖标记Ki67的正常水平(Hogan等人。,2015; Gossel ...

Mouse Model of Reversible Intestinal Inflammation
Author:
Date:
2017-03-20
[Abstract]  Current therapies to treat inflammatory bowel disease by dampening excessive inflammatory immune responses have had limited success (Reinisch et al., 2011; Rutgeerts et al., 2005; Sandborn et al., 2012). To develop new therapeutic interventions, there is a need for better understanding of the mechanisms that are operative during mucosal healing (Pineton de Chambrun et al., 2010). To this end, a reversible model of colitis was developed in which colitis induced by adoptive transfer of naïve CD4+ CD45RBhi T cells in lymphopenic mice can be reversed through depletion of colitogenic CD4+ T cells (Brasseit et al., 2016). [摘要]  目前通过抑制过度炎症免疫应答治疗炎症性肠病的治疗方法取得了有限的成功(Reinisch等人,2011; Rutgeerts等人,2005; Sandborn等人[ et al。,2012)。为了开发新的治疗干预措施,需要更好地了解粘膜愈合期间手术的机制(Pineton de Chambrun等,2010)。为此,开发了一种可逆模型的结肠炎,其中通过淋巴细胞小鼠中过早转移原始CD4 + / CD40RB T细胞诱导的结肠炎可以通过消除结肠发生CD4 + T细胞(Brasseit等,2016)。

背景随着发展旨在重现人类疾病的动物模型,我们对肠道炎症性肠疾病(IBD)的发病机制的理解已经大大改善(Khanna等人)。 ,2014)。尽管鉴定了广泛的免疫学目标,目前的治疗方法在治疗IBD方面取得的成功有限,而且有关知识可用于建立长期缓解和相关粘膜愈合时引起的机制(D'Haens >等,,2014)。到目前为止,一个主要的限制是缺乏动物模型,其中可以在具有既定疾病的动物中可再现地诱导缓解。在感染引起肠道炎症的模型中,促炎和抗炎机制可以同时运作,这意味着在解决炎症期间解剖不同免疫途径的作用可能是一个挑战(Endt等人。 ,2010; ...

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