| Isolation and in vivo Transfer of Antigen Presenting Cells
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Author:
Date:
2014-10-05
[Abstract] Transfer of antigen presenting cells in vivo is a method used by immunologists to examine the potency of antigen presentation by a selected population of cells. This method is most commonly used to analyze presentation of protein antigens to MHC class I or II restricted T cells, but it can also be used for studies of nonconventional antigens such as CD1-presented lipids. In a recent study focusing on CD1d-restricted glycolipid antigen presentation to Natural Killer T cells, we compared antigen presenting properties of splenic B cells, CD8αPos dendritc cells (DCs) and CD8αNeg ...
[摘要] 体内转移抗原呈递细胞是免疫学家用来检查所选择的细胞群体的抗原呈递效力的方法。该方法最常用于分析蛋白质抗原对MHC I类或II类限制性T细胞的呈递，但其也可用于非常规抗原如CD1呈递脂质的研究。在最近关于CD1d限制性糖脂抗原呈递到天然杀伤T细胞的研究中，我们比较脾B细胞，CD8αpos 树突细胞（DC）和CD8α Neg sup> DC（Arora et al。，2014）。该方案描述了用于分离这些细胞群体和将其转移到受体小鼠中以分析其抗原呈递性质的详细方法。作为总单核细胞的百分比，平均脾脏含有约1-3％骨髓树突状细胞（DC）。在绝对数量上，这转换为大约0.6-1.8×10 6个DC。为了增强脾中DC的数目，向小鼠皮下注射来自经过工程改造以表达fms相关的酪氨酸激酶3配体（Flt3L）的培养的黑素瘤细胞系（B16.Flt3L）的细胞（Mach等人。，2000）。该蛋白是与集落刺激因子-1同源的生长因子，并在造血干细胞的分化中起关键作用。将这种蛋白质作为纯化的蛋白质施用到小鼠中导致多个器官中的CD8αpos pos和CD8α阳性DC亚群的扩增。在已经植入过表达这种蛋白质的肿瘤细胞的小鼠中也观察到类似的扩增（Mach等人，2000）。根据我们的经验，来自具有可触知的B16.Flt3L肿瘤的小鼠的脾脏中高达60％的总单核细胞可以是CD11c阳性树突细胞，从而得到高达5×10 ...
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| Generation and Maturation of Human Monocyte-derived DCs
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Author:
Date:
2014-08-05
[Abstract] Dendritic cells (DC) are antigen-presenting cells, which play a critical role in the regulation of the adaptive immune response. They act as a bridge between the innate and the adaptive immune systems. An approach to study their function and potentiality is to generate DC-like cells by culturing CD14+ monocyte-enriched peripheral blood mononuclear cells (PBMC). In the presence of GM-CSF and IL-4, these cultures give rise to large numbers of DC-like cells. Generating human-DC from PBMC is a useful tool to study biological functions of human DC.
[摘要] 树突状细胞（DC）是抗原呈递细胞，其在适应性免疫应答的调节中起关键作用。 它们作为先天免疫系统和适应性免疫系统之间的桥梁。 研究它们的功能和潜力的方法是通过培养富集CD14 +单核细胞的外周血单核细胞（PBMC）产生DC样细胞。 在GM-CSF和IL-4存在下，这些培养物产生大量的DC样细胞。 从PBMC产生人类DC是研究人类DC的生物学功能的有用工具。
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| Culturing of C57BL/6 Mouse Embryonic Stem (ES) Cell Line
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Author:
Date:
2011-10-05
[Abstract] Using ATCC ES C57BL/6 as an example, it is shown here how to culture mouse embryonic stem (ES) cell line. The clonal embryonic stem cell line #693 ES C57BL/6 was derived from a strain C57BL/6J (B6) mouse blastocyst [PubMed: 11730008]. The ES cells were shown to populate the germ line of two host blastocyst donors, FVB/NJ (FVB) and the coisogenic strain C57BL/6-Tyrc-2J (c2J). Coat-color chimera production was high using c2J blastocysts while FVB blastocysts produced a low number of chimeras [PubMed: 11730008].
[摘要] 这里以ATCC ES C57BL/6为例介绍如何培养小鼠胚胎干细胞(ES)株系。 编号 #693 ES C57BL/6的干细胞系是从C57BL/6J (B6)小鼠囊胚取得[PubMed: 11730008]。 这些 ES细胞是由两个囊胚供体生殖系移植而来。这两个供体株系分别为FVB/NJ (FVB)和同源株系 C57BL/6-Tyrc-2J (c2J)。使用c2J囊胚株系产生的花色嵌合产物多于使用FVB囊胚株系[PubMed: 11730008]。
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