非编码RNA,包括调节RNA(sRNA),有助于调节致病细菌的基因表达,使它们能够适应宿主环境中遇到的各种压力。金黄色葡萄球菌是RNA介导的毒力和致病性调节的研究良好的模型,sRNA在塑造金黄色葡萄球菌与人类和动物宿主的相互作用中起着重要作用。通过调节靶mRNA的翻译和/或稳定性,sRNA调节致病所需的毒力因子和调节蛋白的合成。此外,干扰其他两类非编码RNA的RNA修饰水平,rRNAs,和tRNA,已被提议有助于压力适应。然而,对这些各种因素如何影响翻译调节的研究通常仅限于特定的基因,使用体内报道分子和/或体外翻译系统。全基因组测序方法为研究RNA依赖性调控提供了新的视角。特别是,核糖体谱分析方法为表征翻译调控的整体景观提供了强大的资源,有助于更好地理解金黄色葡萄球菌的病理生理学。这里,我们描述了我们适应于在金黄色葡萄球菌中进行核糖体分析的方案.
Noncoding RNAs, including regulatory RNAs (sRNAs), are instrumental in regulating gene expression in pathogenic bacteria, allowing them to adapt to various stresses encountered in their host environments. Staphylococcus aureus is a well-studied model for RNA-mediated regulation of virulence and pathogenicity, with sRNAs playing significant roles in shaping S. aureus interactions with human and animal hosts. By modulating the translation and/or stability of target mRNAs, sRNAs regulate the synthesis of virulence factors and regulatory proteins required for pathogenesis. Moreover, perturbation of the levels of RNA modifications in two other classes of noncoding RNAs, rRNAs, and tRNAs, has been proposed to contribute to stress adaptation. However, the
study of how these various factors affect translation regulation has often been restricted to specific genes, using in vivo reporters and/or in vitro translation systems. Genome-wide sequencing approaches offer novel perspectives for studying RNA-dependent regulation. In particular, ribosome profiling methods provide a powerful resource for characterizing the overall landscape of translational regulation, contributing to a better understanding of S. aureus physiopathology. Here, we describe protocols that we have adapted to perform ribosome profiling in S. aureus.