侵入细胞内的牙龈卟啉单胞菌影响人牙周膜细胞的增殖及成骨分化

Subjects: Medicine, Pharmacy >> Preclinical Medicine submitted time 2017-12-27 Cooperative journals: 《南方医科大学学报》

周蕾 胡永莲 武世伍 俞岚 承泽农 朱博

Abstract： Objective To investigate the ability of Porphyromonas gingivalis to invade human periodontal ligament cells (hPDLCs) and the effect of intracellular P. gingivalis on cell proliferation and osteogenic differentiation in vitro. Methods The invasion ability of P. gingivalis in hPDLCs was tested using an antibiotic protection assay at the multiplicity of infection (MOI) of 10 and 100. The proliferation of the infected cells was detected using a CFDA-SE kit, and the cells were sorted by fluorescence-activated cell sorting (FACS) followed by alizarin red staining for detecting mineralization nodules deposition; real-time PCR was used to examine the expression of Runx2 mRNA in the cells. Results P. gingivalis actively invaded hPDLCs, and the internalized P. gingivalis was able to resist antibiotic treatment. The cells infected by P. gingivalis exhibited no significant suppression of cell proliferation, but showed significantly lowered capacity for osteogenic differentiation, down-regulated RUNX2 mRNA expression, and reduced mineral deposition. Conclusion Intracellular P. gingivalis does not significantly affect the proliferation of hPDLCs but inhibits osteogenic differentiation of the cells.

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