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Inverted Microscope System

倒置显微镜系统

Company: Nikon
Catalog#: Eclipse Ti-U
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Hepatitis C virus Cell-to-cell Spread Assay
Author:
Date:
2014-12-20
[Abstract]  Hepatitis C virus (HCV) can infect naïve cells via entry of “cell-free” extracellular virus or direct “cell-to-cell” transmission. Here, we describe an assay for detecting HCV cell-to-cell transmission, using a non-growing cell culture system that avoids confounding effects of cell growth. The assay consists of infecting a small number of cells in a confluent monolayer and then blocking subsequent cell-free extracellular virions with a neutralizing antibody such that only cell-to-cell transmission may occur. Under these conditions, incubation at 37 °C results in the formation of infected cell foci. The extent of cell-to-cell spread can then be determined by counting the number of cells in each focus. The assay may be modified to assess the effects of inhibitors and/or specific cellular ... [摘要]  丙型肝炎病毒(HCV)可通过"无细胞"细胞外病毒的进入或直接的"细胞到细胞"传递而感染初始细胞。 在这里,我们描述检测HCV细胞到细胞传播,使用一个非增长的细胞培养系统,避免细胞生长的混杂效应的测定。 该测定法包括感染汇合单层中的少量细胞,然后用中和抗体阻断随后的无细胞的细胞外病毒粒子,使得仅可发生细胞与细胞的传递。 在这些条件下,在37℃下孵育导致感染的细胞病灶的形成。 然后可以通过计数每个焦点中的细胞数量来确定细胞与细胞扩散的程度。 可以修改测定以评估抑制剂和/或特异性细胞基因对HCV的细胞与细胞扩散的影响。

Chemosensitivity Assay
Author:
Date:
2013-09-05
[Abstract]  Chemoresistance is one of the special properties of cancer stem cells, which is the main cause of chemotherapy failure and plays an important role in the recurrence of various cancers including osteosarcoma. The most widely used assay for evaluating chemoresistance is the modified cell proliferation assay. An equal number of cells are seeded onto 96-well culture plates or 24-well plates, and then different concentrations of anti-cancer drugs are added into each well. After that, measure the cell density or cell activity to observe the effect of anti-cancer drugs to cancer cells or cancer stem cells. The chemoresistance of cells is stronger, the cell density or cell activity is higher. Here, we describe chemosensitivity assays for osteosarcoma cells and osteosarcoma stem-like cells.
[摘要]  化学抗性是癌症干细胞的特殊性质之一,其是化疗失败的主要原因,并且在各种癌症(包括骨肉瘤)的复发中起重要作用。 最广泛使用的用于评价化学抗性的测定法是修饰的细胞增殖测定法。 将等量的细胞接种到96孔培养板或24孔板上,然后将不同浓度的抗癌药物加入每个孔中。 之后,测量细胞密度或细胞活性,观察抗癌药物对癌细胞或癌症干细胞的作用。 细胞的化学抗性更强,细胞密度或细胞活性更高。 在这里,我们描述了骨肉瘤细胞和骨肉瘤干样细胞的化学敏感性测定。

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