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重组FOXN1融合蛋白在老老鼠中增加T细胞的产生

Jin Zhao¹, Rong Hu¹, Kuan Chen Lai¹

¹Department of Allied Health Sciences, University of Connecticut, Storrs, CT, United States.

Frontiers in immunology

|July 29, 2024

概括

衰老会减少胸膜上皮细胞 (TEC),损害T细胞的产生. 一种新的复合FOXN1融合蛋白,输入静脉,使TEC再生,并促进老老小鼠的T细胞生成.

科学领域:

免疫学免疫学免疫学
发展生物学发展生物学
衰老研究研究衰老研究

背景情况:

T细胞的发育依赖于胸腺和胸腺上皮细胞 (TECs).
衰老导致TEC损失,导致胸膜缩和T细胞产量减少.
对于TEC的开发和维护,FOXN1是至关重要的.

研究的目的:

开发一种改进的方法来传递FOXN1以增强老化小鼠的T细胞生成.
为了评估一种新的复合FOXN1 (rFOXN1) 融合蛋白的疗效,静脉注射.

主要方法:

产生了一种rFOXN1融合蛋白,其中包括CCR9 N-终端,人类FOXN1和蛋白质转导域.
向14个月大的小鼠静脉注射rFOXN1融合蛋白.
评估了胸腺进入,TEC向,胸腺形成和胸腺和外围的T细胞数量.

主要成果:

经过静脉注射后,rFOXN1融合蛋白成功进入了胸腺和TEC.
rFOXN1的使用增强了胸腺形成,并增加了胸腺内T细胞的产生.
在胸腺和外围淋巴体器官中观察到T细胞数量的显著增加.

结论:

静脉输入的rFOXN1融合蛋白在老年小鼠中有效地恢复了胸膜功能.
这种方法显示了预防和治疗老年人T细胞免疫缺陷的潜力.
rFOXN1融合蛋白代表了与年龄相关的免疫衰退的有前途的治疗策略.

关键词:

这就是FOXN1的原因.产生T细胞的一代.这是一只老老鼠.胸膜上皮细胞胸膜上皮细胞胸腺 (thymus) 是一个神经系统.

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