CLIN CHEM:通用荧光标记流式细胞术检测细胞外囊泡如何?

2018-04-04 MedSci MedSci原创

体液中的细胞外囊泡(EVs)是疾病的潜在生物标志物。为了探索EV的临床相关性,不需要抗体并且结合所有EV的特定通用的EV标记将是有用的。近日国际杂志《CLIN CHEM》发表了一篇对5种常用的流式细胞仪通用标记进行评估的研究。 研究人员采用流式细胞(A60-Micro, Apogee)来评价通用EV标记钙黄绿素乙酰氧甲基酯,钙黄绿素乙酰氧甲基酯紫,羧基琥珀酰亚胺酯(CFSE),4-(2- [

体液中的细胞外囊泡(EVs)是疾病的潜在生物标志物。为了探索EV的临床相关性,不需要抗体并且结合所有EV的特定通用的EV标记将是有用的。近日国际杂志《CLIN CHEM》发表了一篇对5种常用的流式细胞仪通用标记进行评估的研究。 研究人员采用流式细胞(A60-Micro, Apogee)来评价通用EV标记钙黄绿素乙酰氧甲基酯,钙黄绿素乙酰氧甲基酯紫,羧基琥珀酰亚胺酯(CFSE),4-(2- [6-(二辛基氨基) - 2-萘基]乙烯基)-1-(3-磺丙基)吡啶鎓(二- 8-ANEPPS),和乳凝集素,对从条件培养基培养的MCF7人乳腺癌细胞系EV [上皮细胞粘附分子的正(EpCAM的+)]或来自人血浆的血小板EV的染色情况 [整联蛋白β3阳性(CD61 +)]。以侧向散射作为参考,并评估非EV组分(蛋白质和脂蛋白)的影响。 结果显示Di-8-ANEPPS,lactadherin和侧向散射可检测到100%的EpCAM + MCF7 EVs。乳铁蛋白和侧向散射分别可检测到33%和61%的CD61 + EVs。当可溶性蛋白质被首先去除时,Di-8-ANEPPS可检测到血小板EV。由于所有通用标志

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    2018-04-04 sunfeifeiyang

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