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氨酸特异性氨酸 (RgpA/RgpB) 敲除调节中性粒细胞机械

Vanessa Tubero Euzebio Alves^1,2, Tomaz Alves³, Emanuel Silva Rovai⁴

¹Department of Applied Oral Sciences, ADA Forsyth Institute, Cambridge, MA, USA.

Journal of oral microbiology

|July 11, 2024

概括

来自 Porphyromonas gingivalis 的氨酸特异性 gingipains (RgpA/RgpB) 损害了中性粒细胞的细胞化,并增加了 TNF-α 的产生. 这些毒性因素在P. gingivalis感染期间调节中性粒细胞功能,影响免疫反应.

科学领域:

微生物学微生物学
免疫学免疫学免疫学
牙周病研究牙周病研究

背景情况:

银是Porphyromonas gingivalis病毒中关键的毒性因素.
氨酸特异性gingipains (RgpA和RgpB) 与蛋白质分解活性和免疫功能障碍有关,特别是影响中性粒细胞.

研究的目的:

研究RgpA和RgpB在P. gingivalis感染期间对中性粒细胞功能的影响.
了解这些特定的毒性因素是如何调节免疫细胞反应的.

主要方法:

中性粒细胞被分离并与P. gingivalis菌株和RgpA/RgpB双淘汰突变体一起化.
评估了中性粒细胞活力,细胞化,细胞亡,超氧化物释放,基因表达 (TLR2,p47-phox,p67-phox,P2X7) 和细胞因子/化学因子产生 (IL-1β,IL-8,RANTES,TNF-α).

主要成果:

中性细胞TLR2基因表达在没有RgpA/RgpB的情况下下降.
细胞能力显著受损,TNF-α的产生增加了暴露于RgpA/RgpB淘汰突变的中性粒细胞.
超氧化物产生和中性粒细胞亡没有受到显著影响.

结论:

氨酸特异性氨酸蛋白 (RgpA/RgpB) 在调节中性粒细胞对P. gingivalis.反应方面发挥作用.
这些发现凸显了RgpA/RgpB在牙周炎感染期间宿主-病原体相互作用中的重要性.

关键词:

葡萄牙牙牙病 Porphyromonas gingivalis 这种病毒是细胞因子细胞因子牙膏是用在牙膏上的.这是先天的免疫力.中性粒细胞中性粒细胞.发酵细胞的形成发酵细胞的形成超氧化物是一种超氧化物.

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