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一个无偏的细胞培养选择产生DNA的aptamers作为新的衰老细胞特异性试剂

Keenan S Pearson^1,2, Sarah K Jachim^3,4, Caroline D Doherty⁵

¹Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, USA.

|September 19, 2025

概括

研究人员开发了新的DNA吸收体,专门识别衰老细胞,一个不可逆转的细胞循环停止状态. 这种新方法为检测细胞衰老提供了一个有希望的工具,有助于衰老和疾病研究.

科学领域:

生物化学生物化学
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

细胞衰老是一种稳定的细胞循环停止,与衰老和疾病有关.
目前的检测方法依赖于多种生物标志物,缺乏普遍的特异性.
需要精确的工具来识别衰老细胞.

研究的目的:

开发新的,老化的细胞特异性DNA吸收体,采用不偏的选择方法.
为了在体外和体内验证这些体的特异性和点.
为了建立用于衰老细胞检测的新试剂.

主要方法:

利用无偏的细胞培养选择来选DNA吸收体库.
采用老化和非老化小鼠纤维细胞来选择体.
经过验证的阿普坦特异性和确定的分子标 (纤维蛋白).

主要成果:

从数以万亿计的序列中识别出老化的细胞特异性DNA体.
在培养中的老化小鼠细胞中表现出aptamer特异性.
在老老的小鼠组织中显示出增强的阿普塔默染色,在特定模型中显示出减少的染色.

结论:

不偏的基于细胞的选择对于发现衰老特异性DNA试剂是有效的.
选择的体体显示出作为细胞衰老的特定生物标志物的承诺.
这种方法推进了研究衰老的工具.

关键词:

这就是SELEXEX.一个aptamer的应用程序.纤维肌肉生殖素的使用.在体外选择的体外选择.衰老是一种老化.

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