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外泌体或可作为黑色素瘤诊断和预后的生物标志物

2016-01-21 佚名 艾兰博曼医学网

恶性黑色素瘤是一种侵略性肿瘤,其发病率越来越高。胞外体是一种主动分泌的微囊泡,它的特征反映其起源于何种细胞。近日发表在《临床化学学报》(Clinica Chimica Acta,CCA)的研究,西班牙科学家确定并评估了胞外体中黑色素瘤标志物的存在,包括MIA、S100B和酪氨酸酶相关蛋白2(Tyrp2)等,及胞外体中的这些标记物的潜在临床应用价值。 实验收集了黑色素瘤IV期患者、非黑色素瘤患者和

恶性黑色素瘤是一种侵略性肿瘤,其发病率越来越高。胞外体是一种主动分泌的微囊泡,它的特征反映其起源于何种细胞。近日发表在《临床化学学报》(Clinica Chimica Acta,CCA)的研究,西班牙科学家确定并评估了胞外体中黑色素瘤标志物的存在,包括MIA、S100B和酪氨酸酶相关蛋白2(Tyrp2)等,及胞外体中的这些标记物的潜在临床应用价值。

实验收集了黑色素瘤IV期患者、非黑色素瘤患者和健康对照人群的血清样品。沉淀获得胞外体;对血清、胞外体和无胞外体血清中的TYRP2、MIA和S100B的浓度进行定量。

结果显示,在胞外体中检测到了MIA和S100B,并与血清浓度呈显着相关(S100B: r = 0.968; MIA: r = 0.799; p < 0.001)。黑色素瘤患者胞外体中MIA和S100B浓度显着高于健康对照人群和非黑色素瘤患者。然而,三组人群血清胞外体中TYRP2的浓度没有差异。MIA的ROC曲线分析所得峰下面积(AUC)为0.833(p < 0.01),S100B为0.840(p < 0.01)。胞外体中MIA浓度高于2.5μg/L的患者的平均生存期比胞外体中MIA水平低的患者短(前者为4个月,后者为11个月,p < 0.05)。

该研究证实,在MIA和S100B黑色素瘤患者胞外体中检测到了MIA和S100B,对它们的量化具有诊断和预后的作用。

原始出处:

Circulating melanoma exosomes as diagnostic and prognosis biomarkers. Clinica Chimica Acta. Volume 454, 15 February 2016, Pages 28–32

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    2016-08-04 sunylz
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    2016-01-27 李继凯

    好文章

    0

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    2016-01-21 xiaotaiyang1

    外泌体火了

    0

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