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Anti-CD11b microbeads

CD 11B,微珠

公司名称: Miltenyi Biotec
产品编号: 130-049-601
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Differentiation of Myeloid-derived Suppressor Cells from Murine Bone Marrow and Their Co-culture with Splenic Dendritic Cells
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Date:
2017-09-20
[Abstract]  Myeloid-derived suppressor cells (MDSCs) possess the ability to suppress the immune response, and to amplify the regulatory properties of other immune cells, i.e., dendritic cells. Here we describe a protocol in which MDSCs were differentiated from murine bone marrow cells, and CD11c+ dendritic cells were purified from murine spleens. MDSCs and CD11c dendritic cells can be co-cultured and the immunoregulatory phenotype of the MDSCs-conditioned dendritic cells could be assessed by means of a specific functional in vivo experiment, i.e., a skin test as a ... [摘要]  骨髓来源的抑制细胞(MDSCs)具有抑制免疫应答的能力,并扩增其他免疫细胞即树突状细胞的调节特性。 在这里,我们描述了MDSC与鼠骨髓细胞分化的方案,并且从鼠脾中纯化CD11c +树突状细胞。 可以共培养MDSC和CD11c树突状细胞,并且可以通过特定的功能体内实验来评估MDSCs条件树突细胞的免疫调节表型,即皮肤试验作为延迟型超敏反应的量度 抗免疫原性较差的抗原。
【背景】骨髓来源的抑制细胞(MDSCs)是由早期分化阶段的巨噬细胞,粒细胞,树突状细胞和骨髓细胞的前体组成的骨髓细胞组(Youn等人,2008),其在肿瘤的淋巴组织中大量积累感染性小鼠以及感染性疾病,败血症和创伤的小鼠。这些细胞的主要特征是它们以Ag特异性和/或非特异性方式抑制T细胞应答的能力。这些细胞现在被认为是负责肿瘤相关免疫缺陷的主要细胞类型之一;涉及MDSC介导的免疫抑制的主要因素包括Arg1的高表达(Marvel和Gabrilovich,2015)。精氨酸酶1(Arg1)和吲哚胺2,3-双加氧酶1(IDO1)分别是催化L-精氨酸(L-Arg)和L-色氨酸(L-Trp)降解的免疫调节酶,导致局部氨基酸剥夺。此外,与Arg1不同,IDO1在树突细胞(DC)中也具有非酶信号传导活性(Mondanelli等,2017)。除了其固有的免疫抑制活性外,MDSC还可能扩增其他免疫细胞的调节特性,特别是在肿瘤微环境中。虽然建立了MDSC-巨噬细胞相互作用的一些机制(Ugel等,2015),MDSCs和DCs之间的串扰仍然不清楚(Ostrand-Rosenberg等,2012);为弥补这一差距,我们已经制定了该方案,并且我们证明了Arg1 ...

Purification of Tumor-Associated Macrophages (TAM) and Tumor-Associated Dendritic Cells (TADC)
Author:
Date:
2014-11-20
[Abstract]  Tumors are heterogeneous microenvironments where complex interactions take place between neoplastic cells and infiltrating inflammatory cells, such as tumor-associated macrophages (TAM) and tumor-associated dendritic cells (TADC). The relevance of tumor-infiltrating mononuclear myeloid cells is underscored by clinical studies showing a correlation between their abundance and poor prognosis (Laoui et al., 2011). These cells are able to promote tumor progression via several mechanisms, including induction of angiogenesis, remodeling of the extracellular matrix, stimulation of cancer ... [摘要]  肿瘤是异质微环境,其中在肿瘤细胞和浸润性炎症细胞例如肿瘤相关巨噬细胞(TAM)和肿瘤相关树突细胞(TADC)之间发生复杂的相互作用。临床研究强调了肿瘤浸润性单核骨髓细胞的相关性,显示其丰度与不良预后之间的相关性(Laou等人,2011)。这些细胞能够通过几种机制促进肿瘤进展,包括诱导血管生成,重塑细胞外基质,刺激癌细胞增殖和转移以及抑制适应性免疫(Laoui等人,2011 )。此外,单核骨髓细胞的特征在于响应于微环境信号的可塑性和通用性,导致不同的活化状态,如通过在肿瘤中存在不同的功能性TAM亚型所说明的(Movahedi等人,2010; Laoui et al。,2014)。在这里,我们描述了允许其分子和功能表征的TAM和TADC的有价值的分离技术。

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