| Analyzing the Properties of Murine Intestinal Mucins by Electrophoresis and Histology
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Author:
Date:
2017-07-20
[Abstract] Specialized secretory cells known as goblet cells in the intestine and respiratory epithelium are responsible for the secretion of mucins. Mucins are large heavily glycosylated proteins and typically have a molecular mass higher than 106 Da. These large proteins are densely substituted with short glycan chains, which have many important functional roles including determining the hydration and viscoelastic properties of the mucus gel that lines and protects the intestinal epithelium. In this protocol, we comprehensively describe the method for extraction of murine mucus and its analysis by agarose gel electrophoresis. Additionally we describe the use of High Iron Diamine-Alcian Blue, Periodic Acid Schiff’s-Alcian Blue and immune–staining methods to identify and differentiate ...
[摘要] 在肠和呼吸上皮中称为杯状细胞的专门分泌细胞负责粘蛋白的分泌。 粘蛋白是大的重糖基化蛋白质，通常具有高于10μM的分子量。 这些大蛋白质被短聚糖链密集取代，其具有许多重要的功能作用，包括测定粘液凝胶的水合和粘弹性质，其保护肠上皮。 在该方案中，我们全面地描述了通过琼脂糖凝胶电泳提取小鼠粘液的方法及其分析。 此外，我们描述了使用高铁二胺 - 阿尔星蓝，周期酸席夫氏 - 阿尔辛蓝和免疫染色方法来鉴别和区分这些粘蛋白糖蛋白上糖基化的不同状态，特别是侧重于硫酸化和唾液酸化。
【背景】一层粘液保护肠上皮，主要由粘蛋白，水，蛋白质和无机盐组成。粘液屏障的粘性和凝胶状特性使其能够物理保护和润滑粘膜，主要由粘蛋白赋予。粘蛋白是大的重糖基化蛋白质，通常具有高于10μM的分子量。然而，粘蛋白主要用O-聚糖糖装饰，其占分子量的80％。不同的位点特异性和粘蛋白特异性糖基化模式影响粘蛋白和粘液凝胶的性质。众所周知，粘蛋白糖基化在感染和疾病中发生改变（Arike等人，2017; ...
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| ELISA for Alpha-hemolysin (Hla) in Methicilin-resistant Staphylococcus aureus (MRSA)
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Author:
Date:
2014-05-05
[Abstract] Anti-virulence agents against MRSA inhibit the production of disease-causing virulence factors, such as alpha-hemolysin, but are neither bacteriostatic nor bactericidal. Here we discuss a rapid method to screen for MRSA anti-virulence agents by measuring alpha-hemolysin production through ELISA. This protocol can be used with other alpha-hemolysin producing bacteria or for other excreted toxins to which antibodies exist.
[摘要] 针对MRSA的抗毒剂抑制引起疾病的毒力因子如α-溶血素的产生，但既不是抑菌性的也不是杀细菌性的。 在这里我们讨论一种快速方法来筛选MRSA抗毒力试剂通过测量α-溶血素的生产通过ELISA。 该方案可以与其它产生α-溶血素的细菌或存在抗体的其它排泄毒素一起使用。
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