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Oncogene:肾移植患者BK多瘤病毒相关尿道肿瘤的病毒整合情况研究

2020-08-17 AlexYang MedSci原创

移植后与BK多瘤病毒(BKPyV)相关的癌症已经引起了越来越多的注意。然而,BKPyV与致瘤过程的整合作用仍旧不清楚。

移植后与BK多瘤病毒(BKPyV)相关的癌症已经引起了越来越多的注意。然而,BKPyV与致瘤过程的整合作用仍旧不清楚。

最近,有研究人员在3名BKPyV相关的尿路上皮肿瘤患者中,进行了原发性肿瘤和转移性肿瘤的二代病毒组捕获测序。结果发现,在6例肿瘤中鉴定了332个病毒整合位点。在原发性和转移性肿瘤中,BKPyV的整合主要遵循了微同源介导的末端连接机制,理由是在84%的整合位点的侧边区域,人类和BKPyV基因组的微同源显著富集。另外,病毒DNA断点是非随机的,并倾向于在大T基因、小T基因和病毒蛋白2基因中聚集。在原发和转移性肿瘤之间有3、1和1个一致的整合位点,分别影响着LINC01924、eIF3c和NEIL2基因。

BKPyV病毒整合位点分布和相关支持性的reads

原发肿瘤和转移性肿瘤的一致性整合位点

最后,研究人员认为BKPyV的整合在原发性和转移性肿瘤中是一个持续的过程,并能够产生异质性性肿瘤细胞群体。通过该持续的过程,某种细胞群体获得了伸张优势或者是转移的潜力,这也是病毒整合的结果(影响病毒整个的细胞基因或者改变病毒基因的表达或者功能)。

原始出处:

Yuchen Wang, Yanna Liu, Wenfeng Deng et al. Viral integration in BK polyomavirus-associated urothelial carcinoma in renal transplant recipients: multistage carcinogenesis revealed by next-generation virome capture sequencing. Oncogene. 28 July 2020

 

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    2020-10-22 lifestar
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    2021-01-30 cy0324
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    2020-08-19 ms5000000741733160

    👍🏻

    0

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    2020-08-19 zsyan

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