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与Borreliella burgdorferi BosR相关的小型非编码RNA BasA调节病毒性

Brittany L Shapiro¹, Prashant Jaiswal¹, Lisa J Funkhouser-Jones¹

¹Department of Microbial Pathogenesis and Immunology, Texas A&M University, Bryan, Texas, USA.

Infection and immunity

|March 10, 2026

概括

一种新发现的小RNA,BasA,对于莱姆病细菌的毒性至关重要. BasA 调节 BosR 蛋白水平,这对于哺乳动物的细菌感染性至关重要.

科学领域:

微生物学微生物学
分子生物学分子生物学
细菌病原体的产生

背景情况:

转录后调节通过小非编码RNA (sRNA) 微调细菌中的蛋白质水平.
莱姆病病原体Borreliella burgdorferi具有许多温度依赖的sRNA.
SR0735是一种在哺乳动物感染条件 (37°C) 中升调的sRNA.

研究的目的:

为了描述Borreliella burgdorferi中sRNASR0735的功能.
研究SR0735在细菌毒性和关键蛋白质调节中的作用.
根据其功能,将SR0735重新命名为BasA (BosR相关的sRNA位点A).

主要方法:

对野生类型和SR0735删除突变B. burgdorferi进行了转录组和蛋白组分析.
进行了体外结合试验,以评估BosR和BasA之间的相互作用.
用小鼠感染模型来评估细菌感染力.

主要成果:

删除SR0735 (BasA) 导致RpoS及其调节器BosR.的水平降低.
BasA被确定为RNA结合蛋白 BosR.的结合标.
在小鼠模型中,BasA的损失显著降低了B. burgdorferi的感染力.
BasA对于保持最佳的BosR蛋白水平至关重要.

结论:

在转录后,BasA调节了BosR的表达,从而影响病毒性.
BasA-BosR-RpoS调节轴对B. burgdorferi的发病和哺乳动物感染性至关重要.
BasA 是莱姆病病原发生的一个关键因素.

关键词:

波雷利埃拉 (Borreliella burgdorferi) 是一种有毒的植物.莱姆病是莱姆病的一种疾病.基因调节基因调节基因调节转录后监管的规定.它们是sRNARNA.

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