通过Rv1800 (PPE28) 的细胞壁和免疫调节有助于M. smegmatis逃避细胞内杀死
Pradeep Kumar Anand1, Varinder Saini2, Jasbinder Kaur3
1Department of Biotechnology, BMS Block-1, South Campus, Panjab University, Chandigarh, 160014, India.
International journal of biological macromolecules
|July 16, 2023
概括
来自致病菌菌的Rv1800蛋白质表现出雌激酶活性,并增强了在压力下细菌的生存能力. 它的N端有助于热稳定性和运输,而C端显示酶功能,影响免疫反应.
科学领域:
- 微生物学 微生物学
- 蛋白质生物化学 蛋白质生物化学
- 免疫学 免疫学 免疫学
背景情况:
- Rv1800是一种PPE家族蛋白质,仅在致病性菌根菌中发现.
- 它的表达在酸性压力条件下诱导Mycobacterium结核病.
研究的目的:
- 描述Rv1800蛋白的功能域和生物化学活动.
- 研究Rv1800在真菌细菌抗压力和宿主-病原体相互作用中的作用.
主要方法:
- 在体分析中预测蛋白质域和活性.
- 生物化学试验以确定Rv1800及其域的酶活性.
- 在Mycobacterium smegmatis中表达Rv1800以评估表型变化和抗压能力.
- 巨细胞感染检测用于评估细胞内生存率和免疫反应.
主要成果:
- Rv1800的C端具有酶活性,而N端有助于热稳定性和蛋白质运输.
- 在M. smegmatis中Rv1800表达赋予了对各种压力的抵抗力和增加的脂质含量.
- Rv1800促进了巨细胞的更高的细胞内生存率和调节的免疫反应,减少了促炎性细胞因子.
结论:
- Rv1800具有双重功能,在C端具有酶活性,在N端具有结构性作用.
- Rv1800在调节宿主免疫反应和脂质新陈代谢方面发挥着重要作用,支持菌根细菌的生存.
- Rv1800及其域显示出作为抗体介导抗结核免疫的点的潜力.
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