在电离辐射和细菌刺激后,光生物调节对纤维细胞和角质细胞的影响
Mylene Martins Monteiro1, Juliana Amorim Dos Santos1, Victor Paiva Barbosa1
1University of Brasília, Brasília, Laboratory of Oral Histopathology, Health Sciences Faculty, Brazil.
Archives of oral biology
|December 26, 2023
概括
使用660nm,30mW的光生物调节疗法 (PBMT) 有效地增强了用于伤口愈合的细胞迁移和增殖. 优化激光能量密度对于调节细胞反应和改进治疗策略至关重要.
科学领域:
- 细胞生物学 细胞生物学
- 生物医学工程 生物医学工程
- 照相医疗 (photomedicine) 是一种医学.
背景情况:
- 光生物调节疗法 (PBMT) 以其抗炎,止痛和伤口愈合的特性而闻名.
- 电离辐射和细菌感染诱导细胞应激,损害组织修复过程.
研究的目的:
- 研究特定光生物调节疗法 (PBMT) 参数对状细胞和纤维细胞反应的影响.
- 在离子辐射和细菌应激条件下分析PBMT对细胞迁移,增殖和基因表达的影响.
主要方法:
- HaCaT 角质细胞和 HGF 纤维细胞受到压力 (脂多糖, Porphyromonas gingivalis 提取物,电离辐射).
- 细胞被用低级激光照射 (660 nm,30 mW) 处理,在四次会议中以不同的能量密度 (2-5 J/cm2) 进行处理.
- 细胞迁移,增殖,蛋白质表达 (α-SMA,F-actin) 和基因表达 (PI3K通路,炎症性细胞因子) 通过划痕试验,免疫光和RT-qPCR进行了评估.
主要成果:
- PBMT显著增强了纤维细胞和角质细胞的增殖和迁移 (p < 0.05).
- 最佳反应,包括增加α-SMA和F-actin表达,在3J/cm2时观察到.
- 在纤维细胞中,PBMT调节了PI3K通路基因表达,并在两种细胞类型中改变了炎症性细胞因子基因表达,在纤维细胞中具有剂量依赖的影响.
结论:
- 低水平激光照射 (660nm,30mW) 有效地促进细胞迁移,增殖和伤口愈合.
- PBMT在调节关键细胞因子和参与伤口修复的细胞通路方面表现出潜力.
- 定制PBMT能量密度对于优化不同细胞环境中的治疗结果至关重要.
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