EasyEights™EasySep™磁极

无柱免疫磁珠分选多样本处理磁极

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产品号 #（选择产品）

产品号 #18103_C

无柱免疫磁珠分选多样本处理磁极

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搭配使用EasyEights™EasySep™磁极和对应的EasySep™细胞分选试剂，可同时对最多16个样本轻松高效地进行免疫磁珠细胞分选。EasyEights™EasySep™磁极处理的样本体积范围灵活，能够处理少至0.1 x 10⁸个细胞的小体积样本，到多达8.5 x 10⁸个细胞的大体积样本。该磁极设计可在一侧容纳8个标准5 mL（12 x 75 mm）聚苯乙烯圆底管，另一侧容纳8个标准14 mL（17 x 95 mm）圆底或15 mL锥形管。

不确定应该选择哪种磁极？访问我们的 EasySep™细胞分选磁极页面比较不同的选项，并为您的研究选择合适的磁极。

了解更多关于 EasySep™免疫磁珠细胞分选技术的工作原理。

产品说明书及文档

请在《产品说明书》中查找相关支持信息和使用说明，或浏览下方更多实验方案。

Document Type

Product Name

Catalog #

Lot #

Language

Document Type

Product Information Sheet

Product Name

EasyEights™ EasySep™ Magnet

Catalog #

18103

Lot #

All

Language

English

常见问题

Can EasySep™ be used for either positive or negative selection?

Yes. The EasySep™ kits use either a negative selection approach by targeting and removing unwanted cells or a positive selection approach targeting desired cells. Depletion kits are also available for the removal of cells with a specific undesired marker (e.g. GlyA).

How does the separation work?

Magnetic particles are crosslinked to cells using Tetrameric Antibody Complexes (TAC). When placed in the EasySep™ Magnet, labeled cells migrate to the wall of the tube. The unlabeled cells are then poured off into a separate fraction.

Which columns do I use?

The EasySep™ procedure is column-free. That's right - no columns!

How can I analyze the purity of my enriched sample?

The Product Information Sheet provided with each EasySep™ kit contains detailed staining information.

Can EasySep™ separations be automated?

Yes. RoboSep™, the fully automated cell separator, automates all EasySep™ labeling and cell separation steps.

Can EasySep™ be used to isolate rare cells?

Yes. We recommend a cell concentration of 2x10⁸ cells/mL and a minimum working volume of 100 µL. Samples containing 2x10⁷ cells or fewer should be suspended in 100 µL of buffer.

Are the EasySep™ magnetic particles FACS-compatible?

Yes, the EasySep™ particles are flow cytometry-compatible, as they are very uniform in size and about 5000X smaller than other commercially available magnetic beads used with column-free systems.

Can the EasySep™ magnetic particles be removed after enrichment?

No, but due to the small size of these particles, they will not interfere with downstream applications.

Can I alter the separation time in the magnet?

Yes; however, this may impact the kit's performance. The provided EasySep™ protocols have already been optimized to balance purity, recovery and time spent on the isolation.

For positive selection, can I perform more than 3 separations to increase purity?

Yes, the purity of targeted cells will increase with additional rounds of separations; however, cell recovery will decrease.

How does the binding of the EasySep™ magnetic particle affect the cells? is the function of positively selected cells altered by the bound particles?

Hundreds of publications have used cells selected with EasySep™ positive selection kits for functional studies. Our in-house experiments also confirm that selected cells are not functionally altered by the EasySep™ magnetic particles.

If particle binding is a key concern, we offer two options for negative selection. The EasySep™ negative selection kits can isolate untouched cells with comparable purities, while RosetteSep™ can isolate untouched cells directly from whole blood without using particles or magnets.

文献 (1)

Whole Transcriptome Analysis Reveals That Filifactor alocis Modulates TNF$\alpha$-Stimulated MAPK Activation in Human Neutrophils. I. Miralda et al. Frontiers in immunology 2020

Abstract

Periodontitis is an irreversible, bacteria-induced, chronic inflammatory disease that compromises the integrity of tooth-supporting tissues and adversely affects systemic health. As the immune system's first line of defense against bacteria, neutrophils use their microbicidal functions in the oral cavity to protect the host against periodontal disease. However, periodontal pathogens have adapted to resist neutrophil microbicidal mechanisms while still propagating inflammation, which provides essential nutrients for the bacteria to proliferate and cause disease. Advances in sequencing technologies have recognized several newly appreciated bacteria associated with periodontal lesions such as the Gram-positive anaerobic rod, Filifactor alocis. With the discovery of these oral bacterial species, there is also a growing need to assess their pathogenic potential and determine their contribution to disease progression. Currently, few studies have addressed the pathogenic mechanisms used by oral bacteria to manipulate the neutrophil functional responses at the level of the transcriptome. Thus, this study aims to characterize the global changes at the gene expression level in human neutrophils during infection with F. alocis. Our results indicate that the challenge of human neutrophils with F. alocis results in the differential expression of genes involved in multiple neutrophil effector functions such as chemotaxis, cytokine and chemokine signaling pathways, and apoptosis. Moreover, F. alocis challenges affected the expression of components from the TNF and MAPK kinase signaling pathways. This resulted in transient, dampened p38 MAPK activation by secondary stimuli TNF$\alpha$ but not by fMLF. Functionally, the F. alocis-mediated inhibition of p38 activation by TNF$\alpha$ resulted in decreased cytokine production but had no effect on the priming of the respiratory burst response or the delay of apoptosis by TNF$\alpha$. Since the modulatory effect was characteristic of viable F. alocis only, we propose this as one of F. alocis' mechanisms to control neutrophils and their functional responses.

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