在牙的马-三角形T细胞中衰老的性别相关影响
V Tubero Euzebio Alves1, M E C Bruno2, S Mukherjee3
1Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, KY, USA.
Journal of dental research
|November 16, 2023
概括
具体来说,衰老会增加IL-17A产生的玛-三角 (γδ) T细胞和雌性小鼠牙中的Notch-3表达. 这种两性二态表明男性和女性牙周炎的衰老机制不同.
科学领域:
- 免疫学 免疫学 免疫学
- 老年学是一门学科.
- 口腔生物学 口腔生物学
背景情况:
- 衰老会影响免疫细胞的功能和数量,影响炎症疾病的风险.
- 牙的玛-三角形 (γδ) T 细胞随着年龄的增长而发生变化,以及它们在牙周疾病中的作用尚不清楚.
- 越来越多地认识到衰老免疫反应的性别特异性差异.
研究的目的:
- 为了确定老鼠牙的 γδT 细胞中与年龄相关的定量和定性变异.
- 研究这些变异对口腔免疫炎症反应的影响.
- 探索与衰老相关的牙gδT细胞表型中的潜在性别差异.
主要方法:
- 分析了来自年轻 (4个月) 和老年 (24个月) 雄性和雌性小鼠的牙组织.
- 使用流细胞计量量化γδT细胞,IL-17A,IFNγ和Notch-3的表达.
- 定量逆转录聚合酶连锁反应评估了γ和δ链表达.
主要成果:
- 与老年男性相比,老年女性的IL-17A产生 γδT细胞数量显著增加,并且在牙组织中IL-17A的表达增加.
- 牙周Notch-3+ γδT细胞的数量,一个衰老标志物,仅在女性中随着年龄的增长而增加.
- 两种性别的IFNγ+常规T细胞随着年龄的增长而增加,仅在女性中显著.
结论:
- 衰老导致IL-17A产生的γδT细胞和IL-17A表达在雌性小鼠的牙中的特定增加.
- 在 γδT 细胞和常规的 Th17 细胞中观察到的这种性变异表明,与衰老相关的独特机制有助于男性和女性的牙周炎.
- 针对性牙周炎的预防和治疗需要对这些性别特异性免疫衰老模式进行进一步的研究.
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