一个分泌的蛋白质足迹,用于干细胞的多能性
Philip A Lewis1, Edina Silajdžić1, Helen Smith1
1Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom.
PloS one
|June 14, 2024
概括
非侵入性监测人类多能干细胞 (hPSCs) 是至关重要的. 对废弃物介质的蛋白质组分析确定了表明多能性丧失的生物标志物,从而实现了可靠的监测.
科学领域:
- 干细胞生物学 干细胞生物学
- 蛋白质组学是指蛋白质组学.
- 发现生物标志物的发现.
背景情况:
- 维持人类干细胞 (hPSCs) 的多能状态对于研究和治疗应用至关重要.
- 目前用于监测多能性的方法通常需要侵入性细胞采样.
- 开发非侵入性监测技术是干细胞培养的重大未满足需求.
研究的目的:
- 开发一种非侵入性方法来监测人类干细胞 (hPSCs) 的健康多能状态.
- 在废弃物介质中识别蛋白质生物标志物,表明早期的多能性丧失.
主要方法:
- 来自培养胚胎和诱导的hPSCs的废物介质的蛋白质组学分析.
- 在E8介质中培养hPSC以保持多能性,然后转移到E6介质中以诱导多能性损失.
- 转录组分析以与基因表达相关联蛋白质组变化.
- 西方涂抹用于验证已识别的生物标志物.
主要成果:
- 在hPSC废物介质中发现了一种与早期多能性丧失相关的独特蛋白质足迹.
- 在蛋白质足迹和转录组变化之间观察到强烈的相关性.
- 八种分泌生物标志物的复合 (四种E8丰富和四种E6丰富) 为多能状态提供了强大的诊断指标.
- 通过Westernblotting的生物标志物验证证实了细胞系和恢复试验中与多能性的一致相关性.
结论:
- 对hPSC废物介质的秘密蛋白质组分析提供了一种非侵入性方法来监测多能性.
- 一个由经过验证的生物标志物组成的小组可以可靠地诊断多能状态.
- 这种方法有助于开发hPSC作物的强有力的质量控制.
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