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西西里半百岁和超百岁:与年龄相关的Tγδ细胞免疫型有助于长寿特征定义

Mattia Emanuela Ligotti¹, Giulia Accardi¹, Anna Aiello¹

¹Laboratory of Immunopathology and Immunosenescence, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, Palermo, Italy.

Clinical and experimental immunology

|December 9, 2023

概括

免疫细胞称为Tγδ (gamma-delta T) 显示与年龄相关的变化,在百岁老人中增加了终端分化子集 (TEMRA),表明免疫适应极端长寿.

科学领域:

免疫学免疫学免疫学
老年学是一门学科.
细胞生物学细胞生物学

背景情况:

免疫系统的适应对于极端长寿至关重要.
了解百岁老人的Tγδ细胞子集,可以了解健康的衰老.

研究的目的:

研究Tγδ细胞子集 (Vδ1和Vδ2) 和它们的功能状态的与年龄相关的变化.
为了分析长寿人和超百岁老人的这些变化.

主要方法:

对Tγδ细胞子集 (Vδ1,Vδ2) 和Tαβ细胞标记物的流细胞计分析 (CD27,CD45RA).
研究了一组人群,包括年轻人,长寿人士和超级百岁老人.
相关的Tγδ细胞子集与Tαβ细胞子集 (CD8 +,CD4 +) 和NK细胞从以前的分析.

主要成果:

原始的Vδ1和Vδ2T细胞随着年龄的增长而减少,特别是Vδ1.
终端分化的T细胞 (TEMRA) 在Vδ1亚组中增加,特别是在超级百岁老人中.
Vδ1 TEMRA和CD8+ Tαβ细胞与年龄有显著的相关性,与Vδ2和CD4+ Tαβ细胞不同.

结论:

增加的 γδ TEMRA 细胞表明百岁老人具有有利的适应性,而不是总体免疫力下降.
免疫衰老可能是一个差异性适应,使极端长寿.
提升的TEMRA Vδ1,CD8+和NK细胞可能代表成功适应衰老侮辱的机制.

关键词:

在Tγδδ.免疫衰老免疫衰老免疫类型免疫类型长寿长寿是一个问题.一半超级百岁老人半超百岁老人超级百岁老人超级百岁老人

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