牙周炎患者自身组织核酸对小鼠巨噬细胞中NLRP3 mRNA表达的影响及其意义

doi:10.13481/j.1671-587x.20190105

Abstract

Abstract: Objective: To detect the mRNA expression levels of inflammatory-related factors NLRP3, caspase-1, IL-1β, and IL-18 in the murine macrophages infected by periodontitis patient's own tissue nucleic acid, and to discuss the effects of periodontitis patient's own tissue nucleic acid on the inflammation-related factors in the macrophages.Methods: The inflammatory periodontal tissue samples were collected during periodontal flap surgery of the chronic periodontitis patients, and the healthy periodontal tissue samples were collected from the patients without any periodontal diseases undergoing crown lengthening surgery. Then the total RNA from gingival tissue was extracted and reversely transcribed into cDNA. The cultured mouse macrophages RAW264.7 were divided into control group and experiment group, then the healthy periodontal tissue cDNA and inflammatory periodontal tissue cDNA (the cDNA at a concentration of 1 mg·L^-1)were added into the RAW264.7 cells,respectively. Real-time PCR was used to detect the mRNA expression levels of NLRP3, Caspase-1, IL-1β, and IL-18 in the macrophages in various groups at 4, 6 and 8 h after incubation.Results: The microscope observation showed that the mouse macrophages RAW264.7 grew well with round and polygon shapes, clear cytoplasm, and full cell body. Compared with control group, the expression levels of NLRP3, Caspase-1, IL-1β, and IL-18 mRNA in the RAW264.7 cells in experiment group at 4, 6, and 8 h were increased significantly(P<0.05 or P<0.01), and the expression levels of NLRP3,Caspase-1,IL-1β, and IL-18 mRNA in RAW264.7 cells at 6 h in experiment group were the highest.Conclusion: The periodontitis patient's own tissue nucleic acids can promote the mRNA expressions of inflammation-related factors in the RAW264.7 cells, suggesting that the periodontitis patient's own tissue nucleic acid has an immunomodulatory effect on the activation of RAW264.7 cells.

Key words: periodontitis, own tissue nucleic acid, NOD-like receptor protein 3, inflammation-related factors, macrophages

CLC Number:

R781.4

YUAN Zhongzheng, LIU Yin, SHEN Yuqin, LIN Chongtao. Effect of periodontitis patient's own tissue nucleic acid on expression of NLRP3 mRNA in murine macrophages and its significance[J].Journal of Jilin University(Medicine Edition), 2019, 45(01): 23-27.

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Effect of periodontitis patient's own tissue nucleic acid on expression of NLRP3 mRNA in murine macrophages and its significance

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