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基于多组学的结核分枝杆菌毒力因子 EsxB 和 PPE68 对宿主细胞影响的研究。

Multi-omics-based characterization of the influences of Mycobacterium tuberculosis virulence factors EsxB and PPE68 on host cells.

机构信息

Antibiotics Research and Re-Evaluation Key Laboratory of Sichuan Province, School of Pharmacy, Chengdu University, No. 2025 Chengluo Avenue, 610106, Chengdu, People's Republic of China.

Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, No. 24 South Section 1, Yihuan Road, 610064, Chengdu, People's Republic of China.

出版信息

Arch Microbiol. 2023 May 10;205(6):230. doi: 10.1007/s00203-023-03576-y.

Abstract

Mycobacterium tuberculosis, the ancient master of causing tuberculosis, is one of the most successful pathogens capable of persistently colonizing host lungs. The EsxB (CFP-10) of ESX-1 system and PPE68 of the PPE family contribute to the virulence of M. tuberculosis. However, the virulence potential and pathogenetic characteristics of these two proteins during M. tuberculosis infection remain unclear. In this study, two prokaryotic expression plasmids for EsxB or PPE68 of M. tuberculosis were constructed and the recombinant proteins His-EsxB or His-PPE68 were purified. The proteome and transcriptome of MH-S cells treated with His-EsxB or His-PPE68 were explored, followed by validating the expression of the identified differentially expressed genes (DEGs) using quantitative PCR. A total of 159/439 specific proteins or 633/1117 DEGs were obtained between control and His-EsxB or His-PPE68 treated groups in the MH-S proteomes and transcriptomes. Additionally, 37/60 signal pathways were predicted in the His-EsxB or His-PPE68 treated groups and "Cytokine-cytokine receptor interaction" was the most represented pathway. Furthermore, the expression of the DEGs (IL-1β, IL-6, and TNF-α) was significantly upregulated, suggesting that these DEGs contributed to the host response during EsxB or PPE68 treatment. These findings provide detailed information on developing an effective intervention strategy to control M. tuberculosis infection.

摘要

结核分枝杆菌,古老的结核病致病菌,是最成功的病原体之一,能够在宿主肺部持续定植。ESX-1 系统的 EsxB(CFP-10)和 PPE 家族的 PPE68 有助于结核分枝杆菌的毒力。然而,这两种蛋白在结核分枝杆菌感染过程中的毒力潜力和发病特征尚不清楚。在本研究中,构建了结核分枝杆菌 EsxB 或 PPE68 的两个原核表达质粒,并纯化了重组蛋白 His-EsxB 或 His-PPE68。用 His-EsxB 或 His-PPE68 处理 MH-S 细胞的蛋白质组和转录组进行了探索,然后使用定量 PCR 验证鉴定的差异表达基因 (DEGs) 的表达。在 MH-S 蛋白质组和转录组中,与 His-EsxB 或 His-PPE68 处理组相比,对照中分别获得了 159/439 种特异性蛋白或 633/1117 个 DEGs。此外,在 His-EsxB 或 His-PPE68 处理组中预测到 37/60 条信号通路,其中“细胞因子-细胞因子受体相互作用”是最具代表性的通路。此外,DEGs(IL-1β、IL-6 和 TNF-α)的表达明显上调,表明这些 DEGs 有助于 EsxB 或 PPE68 处理期间的宿主反应。这些发现为开发控制结核分枝杆菌感染的有效干预策略提供了详细信息。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d22/10170423/8b347f088b88/203_2023_3576_Fig1_HTML.jpg

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