J Infect Dis:血浆病毒miRNA或可作为慢性活动型EB病毒感染分子标志

2013-07-04 潘风雨无阻 dxy

慢性活动型EB病毒感染(CAEBV)的临床特点类似于慢性或重复的感染性单核细胞增多症,如发热、淋巴结肿大等。CAEBV具有很高的发病率和死亡率,并伴随多种危及生命的并发症。造血干细胞移植已成为有效的治疗方法。血样本中的EB病毒DNA含量已被用于诊断疾病和评估疗效,但是,还没有发现能反映疾病严重程度、病程以及预后的其他生物标志物。miRNA属于小分子非编码RNA,与信使RNA的序列互补。已有研究表明

慢性活动型EB病毒感染(CAEBV)的临床特点类似于慢性或重复的感染性单核细胞增多症,如发热、淋巴结肿大等。CAEBV具有很高的发病率和死亡率,并伴随多种危及生命的并发症。造血干细胞移植已成为有效的治疗方法。血样本中的EB病毒DNA含量已被用于诊断疾病和评估疗效,但是,还没有发现能反映疾病严重程度、病程以及预后的其他生物标志物。

miRNA属于小分子非编码RNA,与信使RNA的序列互补。已有研究表明,EBV转染的细胞能够表达靶向于细胞和病毒DNA的miRNA。 由于miRNA易定量且稳定性高,所以这些分子或许可以作为EBV相关疾病的分子标志物。为了证实这一猜想,来自于日本名古屋研究生医学院的Yoshihiko Kawano和同事进行了一项研究,该研究结果在线发表于2013年5月17日的Journal of Infectious Diseases上。研究发现,血浆病毒miRNA或许可以作为慢性活动型EB病毒感染的分子标志。

该研究采用TaqMan 探针定量分析检测了2个EBV开放阅读框(BART 和BHRF)内编码的12种miRNA在血浆中的表达水平,研究共涉及了19例AEBV患者,14例传染性单细胞增多症患者以及11位健康对照者。
结果显示,CAEBV病人的血浆miR-BART-5p、2-5p、5和22均明显高于感染性单细胞增多症患者和健康对照组。并且,与无全身症状的CAEBV患者相比,伴随全身症状的CAEBV患者的血浆miR-BART2-5p、4、7、13、15与22水平明显上升。与血浆EB病毒负荷相反的是,miR-BART2-5p、13和15有与特殊临床情况相关的临床截止值。

研究发现,在CAEBV患者中,特异性血浆EBV miRNA 水平上升。因此,一些EBV miRNAs,尤其是miR-BART2-5p、13与15,可能成为反映疾病严重程度或预后的分子标志。


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    2013-12-27 fyxzlh
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    2013-12-22 smallant2002
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    2013-07-06 Homburg
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