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FaDu

FaDu

公司名称: ATCC
产品编号: HTB-43
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Quantification of Neisseria meningitidis Adherence to Human Epithelial Cells by Colony Counting
Author:
Date:
2018-02-05
[Abstract]  To cause an infection, the human specific pathogen Neisseria meningitides must first colonize the nasopharynx. Upon tight interaction with the mucosal epithelium, N. meningitidis may cross the epithelial cellular barrier, reach the bloodstream and cause sepsis and/or meningitis. Since N. meningitidis niche is restricted to humans the availability of relevant animal models to study host-pathogen interactions are limiting. Therefore, most findings that involve N. meningitidis colonization derive from studies using cultured human cell lines. Human epithelial ... [摘要]  为了引起感染,人类特定的病原体脑膜炎奈瑟氏脑必须首先在鼻咽中定居。 与粘膜上皮紧密相互作用时, 脑膜炎双球菌可能穿过上皮细胞屏障,到达血流并引起败血症和/或脑膜炎。 由于 N meningitidis niche限于人类。 因此,大多数涉及N 脑膜炎菌群定植来源于使用培养的人类细胞系的研究。 在最初的病原体坚持。 在这里,我们描述了一个标准协议来量化N的遵守情况。 脑膜炎双球菌对上皮细胞FaDu细胞的作用。 感染后收集的细胞裂解物的集落计数用于量化对上皮细胞的粘附。

【背景】作为细菌发病机制的重要一步。细菌粘附素与宿主细胞表面受体之间的分子相互作用决定了定植位点(Soto and Hultgren,1999)。鼻咽中的上皮层形成人类限制性病原体N的第一个细胞屏障。 meningitidis 遇到和无症状殖民。牢固粘附,并与宿主细胞相互作用可导致上皮细胞和进入血液的渗透,在危及生命的败血症和/或脑膜炎(斯蒂芬斯,2009)得到的。从细菌膜延伸出来的长细丝(称为IV型菌毛(Tfp))与PilC1尖端定位的粘附素在初始依从性中起关键作用。脑膜炎到鼻咽上皮细胞(Marceau等,1995; Rudel等,1995)。 Tfp不仅促进与宿主细胞的相互作用,而且参与细菌聚集体的发育,这可以有助于高水平的粘附和抵抗剪切应力(Helaine等,2005,Mikaty ...

Karyotype Analysis
Author:
Date:
2014-05-20
[Abstract]  A chromosome is the structure that organizes DNA and protein in cells. It is a single piece of coiled DNA containing coding and non-coding sequences. Human cells have 23 pairs of chromosomes including 22 pairs of autosomes and one pair of sex chromosome, giving a total of 46 per cell. In tumor cells, chromosomal instability has been considered to be one of the hallmarks of tumor formation. Here we use the karyotype analysis to separate the chromosomes and observe the chromosomes in tumor cells with a microscope.
[摘要]  染色体是组织细胞中的DNA和蛋白质的结构。 它是含有编码和非编码序列的单片卷曲DNA。 人类细胞具有23对染色体,包括22对常染色体和一对性染色体,每个细胞总共46个染色体。 在肿瘤细胞中,染色体不稳定性已被认为是肿瘤形成的标志之一。 这里我们使用核型分析来分离染色体,并用显微镜观察肿瘤细胞中的染色体

Three-dimensional Invasion Assay
Author:
Date:
2013-09-05
[Abstract]  The invasive ability of cancer cells is a crucial function for cancer metastasis and the surrounding microenvironment of cancer cells in living tissues is three-dimension (3D). Therefore, to establish an in vitro invasion assay in a 3D system to predict cancer invasive ability is valuable in the research for cancer metastasis. Here, we describe a 3D invasion assay for observing the morphology and comparing the invasive ability of cancer cells in artificial 3D environments (Yang et al., 2012). Collagen I gels are used to cover on the top of cancer cells attached on coverslip ... [摘要]  癌细胞的侵袭能力是癌症转移的关键功能,活组织中癌细胞的周围微环境是三维的(3D)。 因此,在3D系统中建立体外侵袭测定以预测癌症侵袭能力在癌症转移的研究中是有价值的。 在这里,我们描述了用于观察形态学并比较人造3D环境中癌细胞的侵袭能力的3D侵袭测定(Yang等人,2012)。 胶原I凝胶用于覆盖附着在盖玻片玻璃皿上的癌细胞的顶部,并且添加含有FBS的培养基作为化学引诱物。 在孵育合适的时间后,将细胞固定并染色。 可以计算入侵指数,并且可以用激光共聚焦显微镜成像形态

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