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Blood:外泌体在EBV相关性淋巴瘤的发展中发挥促炎性调控作用

2018-04-23 MedSci MedSci原创

中心点:EBV编码miRNAs通过外分泌的方式从感染细胞转导至未感染细胞,从而调控肿瘤发生。EBV编码miRNAs可作为将EBV+ DLBCL患者分为两组的良好诊断标志物。摘要:老年人感染EB病毒(EBV)可引发多种疾病,包括B细胞淋巴瘤,如霍奇金淋巴瘤(HL)和弥漫性大B细胞淋巴瘤(DLBCL)。近日,Blood杂志上发表一篇文献,研究人员发现EB病毒可通过外分泌方式反式作用于肿瘤中的未感染的巨

中心点:

EBV编码miRNAs通过外分泌的方式从感染细胞转导至未感染细胞,从而调控肿瘤发生。

EBV编码miRNAs可作为将EBV+ DLBCL患者分为两组的良好诊断标志物。

摘要:

老年人感染EB病毒(EBV)可引发多种疾病,包括B细胞淋巴瘤,如霍奇金淋巴瘤(HL)和弥漫性大B细胞淋巴瘤(DLBCL)。近日,Blood杂志上发表一篇文献,研究人员发现EB病毒可通过外分泌方式反式作用于肿瘤中的未感染的巨噬细胞,促进淋巴瘤的发展。

在人化的小鼠模型中,两种EB病毒菌株(Akata和B95-8)之间淋巴增生性疾病(LPD)的形成差异明显。而且,在体内注入Akata来源的外泌体或可通过调节巨噬细胞表型影响LPD的严重程度。

据报道,从Akata-淋巴母细胞系(LCLs)收集的外泌体包括EBV衍生的非编码RNAs,如BART miRNAs和EBV编码RNA(EBER)。研究人员重点关注外泌体介导的BART miRNAs转运。在体外,BART miRNAs可通过巨噬细胞特征性基因白介素-10、α肿瘤坏死因子和精氨酸酶的表达来诱导免疫调节表型,提示BART miRNAs具有免疫调控作用。EBV编码miRNA的表达水平与弥漫性B细胞淋巴瘤老年患者的临床预后密切相关。

上述结果表明BART miRNAs是调节淋巴增生性疾病严重程度的因素之一,可作为EBV+的B细胞淋巴瘤的诊断标志物。

原始出处:

Hiroshi Higuchi, et al.Role of exosomes as a proinflammatory mediator in the development of EBV-associated lymphoma.Blood  2018  :blood-2017-07-794529;  doi: https://doi.org/10.1182/blood-2017-07-794529

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    2018-04-24 happsf

    学习

    0

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    2018-04-24 kafei

    学习学习谢谢

    0

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    2018-04-23 orangesking

    0

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