通过深紫外线显微镜进行非破坏性,高分辨率的T细胞特征和亚型鉴定
Viswanath Gorti1, Caroline E Serafini1,2, Aaron D Silva Trenkle1
1Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA.
BME frontiers
|February 20, 2026
概括
深紫外线 (UV) 显微镜为T细胞分析提供了一种快速,无标签的方法. 这种技术准确地评估T细胞活力,激活和亚型,促进免疫细胞的表征.
科学领域:
- 免疫学 免疫学 免疫学
- 显微镜的使用方法
- 细胞生物学 细胞生物学
背景情况:
- 对于免疫功能,疾病监测和细胞疗法来说,T细胞的表征是至关重要的.
- 目前的流动细胞计等方法需要标记,并且具有破坏性.
- 现有的无标签成像方法在速度,特异性和复杂性方面存在局限性.
研究的目的:
- 建立深紫外线 (UV) 显微镜作为T细胞评估的快速,无标签的成像技术.
- 评估深紫外线显微镜在确定T细胞活力,激活状态和亚型方面的准确性.
- 为了证明深紫外线显微镜对于高通量免疫细胞分析的潜力.
主要方法:
- 利用静态深紫外线图像来评估T细胞活力和激活.
- 采用动态深紫外线时间序列成像来量化T细胞亚型 (CD4+和CD8+) 的细胞内活动.
- 对比深紫外线显微镜的结果与流细胞计进行验证.
主要成果:
- 静态深紫外线图像显示T细胞活力和激活的流细胞计与高相关性 (R2>0.97).
- 动态深紫外线成像准确地分类了CD4+和CD8+T细胞的亚型,具有~90%的灵敏度和特异性.
- 深紫外线图像中的细胞内活动模式与T细胞亚型之间的已知代谢差异相对应.
结论:
- 深紫外线 (UV) 显微镜为T细胞表征提供了快速,无标签和准确的方法.
- 这种技术在免疫学研究,免疫监测和基于细胞的治疗开发中具有广泛的应用.
- 深紫外线显微镜克服了当前T细胞分析方法的局限性,提供了一个强大的替代方案.
相关概念视频
01:05Total Internal Reflection Fluorescence Microscopy
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
01:37Super-resolution Fluorescence Microscopy
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.