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Updated: May 7, 2026

Imaging InlC Secretion to Investigate Cellular Infection by the Bacterial Pathogen Listeria monocytogenes

Imaging InlC Secretion to Investigate Cellular Infection by the Bacterial Pathogen Listeria monocytogenes

Published on: September 19, 2013

蛋白质生物标记物的鉴定,以区分Listeria monocytogenes的基因系III

Basant Gomaa¹, Jingjun Lu¹, Hossam Abdelhamed¹

¹Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA.

Foods (Basel, Switzerland)

|May 11, 2024

概括

研究人员确定了两个关键蛋白质TM2和DNA腺甲基酶 (Dam),作为检测Listeria monocytogenes系III菌株的潜在生物标志物. 这一发现使得基于抗体的更简单的检测方法能够对这种食源性病原体进行检测.

科学领域:

微生物学微生物学
蛋白质组学是指蛋白质组学.
生物信息学是一种生物信息学.

背景情况:

李斯特菌单细胞菌会导致李斯特菌病,这是一种严重的食物传播疾病,死亡率高.
L. monocytogenes包括四个遗传系,其中III系菌株带来了特定的诊断挑战.

研究的目的:

为了确定蛋白质生物标志物用于特定检测Listeria monocytogenes遗传系III菌株.
开发简单的基于抗体的方法来识别III血统菌株.

主要方法:

在参考菌株上使用液体染色学-电子喷雾离子双重质谱法 (LC-ESI MS/MS) 进行蛋白质组分析.
生物信息分析,包括BLAST,以识别血统特定的蛋白质.
重组蛋白表达,抗体产生和酶相关免疫吸收试验 (ELISA) 进行验证.

主要成果:

与I和II系菌株相比,在III系基准菌株NRRL B-33077中发现了42种独特的蛋白质.
包括TM2和DNA腺甲基酶 (Dam) 在内的四种蛋白质在I和II系中没有表现出同质性.
埃利萨检测证实,针对TM2蛋白和Dam的抗体特别检测了所有测试的III系菌株,没有与I或II系菌株的交叉反应.

结论:

TM2蛋白和DNA腺甲基酶 (Dam) 是潜在的生物标志物,用于准确检测和区分Listeria monocytogenes III系.
这项研究验证了蛋白质组学和生物信息学在识别新型诊断生物标志物的联合使用.
已识别的生物标志物可以用于临床,环境和食品安全应用.

关键词:

李斯特里亚单细胞原体 NRRL B-3307777 李斯特里亚单细胞原体遗传血统 III 的遗传谱系质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量蛋白质生物标志物是蛋白质的生物标志物

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