Characterization of Klebsiella pneumoniae Extracellular Polysaccharides

被引:4
作者
Khadka, Saroj [1 ]
Ring, Brooke E. [1 ]
Pariseau, Drew A. [2 ]
Mike, Laura A. [1 ]
机构
[1] Univ Toledo, Coll Med & Life Sci, Dept Med Microbiol & Immunol, Toledo, OH 43606 USA
[2] Univ Toledo, Dept Med, Coll Med & Life Sci, Toledo, OH 43606 USA
来源
CURRENT PROTOCOLS | 2023年 / 3卷 / 11期
基金
美国国家卫生研究院;
关键词
capsule; hypermucoviscosity; extracellular polysaccharide; Klebsiella pneumoniae; silver stain; REDUCTION;
D O I
10.1002/cpz1.937
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Klebsiella pneumoniae is a clinically significant, Gram-negative pathogen in which the production of extracellular polysaccharides is a key virulence factor. Extracellular polysaccharides such as the capsule and its mucoviscosity play a significant role in K. pneumoniae infection. In this article, we explain several standard protocols used to characterize the extracellular polysaccharides of K. pneumoniae. Several of these protocols are adapted specifically for K. pneumoniae and describe methods to purify and quantify the extracellular polysaccharide of K. pneumoniae. We also present a standardized protocol to quantify K. pneumoniae mucoviscosity, a unique feature of K. pneumoniae extracellular polysaccharide. These protocols will help create uniformity in standard protocols used in K. pneumoniae extracellular polysaccharide studies. (c) 2023 The Authors. Current Protocols published by Wiley Periodicals LLC.Basic Protocol 1: Extracellular polysaccharide isolation and purificationBasic Protocol 2: Large-scale isolation and purification of extracellular polysaccharideBasic Protocol 3: Uronic acid quantification of extracellular polysaccharideBasic Protocol 4: Extracellular polysaccharide visualization by SDS-PAGEBasic Protocol 5: Klebsiella pneumoniae mucoviscosity measurement by sedimentation resistance assayAlternate Protocol 5: 96-well plate-based Klebsiella pneumoniae sedimentation resistance assaySupport Protocol 5: Determination of plate to cuvette conversion factor
引用
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页数:31
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