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一个特定于条形码的固定接口,用于微流动学辅助的统一空间条形码微阵列分析

Sidi Tian^1,2, Yingxue Li², Jia Yao²

¹School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China.

|September 10, 2025

概括

本研究引入了一个条码特定的固定化 (BarSI) 接口,以创建统一的空间条码微阵列芯片. 这种新的方法确保了对高通量空间转录组学进行无偏见的转录组分析.

科学领域:

生物技术是生物技术.
基因组学就是基因组学.
微流体学微流体学

背景情况:

空间转录基因分析对理解组织组织至关重要.
目前基于微流体的方法由于试剂吸附而遭受不均的条形编码,导致偏差的mRNA分析.
统一的条形码微阵列对于准确的空间转录组数据至关重要.

研究的目的:

开发一种用于微流体微阵列芯片中统一条码的新型接口.
为了克服微通道中非特异性吸附的局限性.
为了实现无偏的转录组捕获和分析.

主要方法:

开发一个带有抗吸附和生物活性的条形码特定固定 (BarSI) 接口.
在微通道中固定DNA探头,实现低变化系数 (CV).
使用直角条形编码系统制造空间条形编码微阵列芯片.

主要成果:

在微通道中实现了高度均的DNA探头固定 (CV为2.3%和3.2%).
与传统幻灯片 (20.91 ± 2.84%) 相比,开发出具有空间条形码的微阵列芯片,其光强度CV显著降低 (8.47 ± 1.26%).
证明了小鼠肝脏mRNA的空间无偏差检测,Moran的I<0.05.

结论:

该BarSI接口允许经济和可访问的制造统一的空间条形码微阵列芯片.
这项技术为公正的转录组分析提供了一种新的策略.
开发的方法显著提高了空间转录基因分析的准确性和可靠性.

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