Novel polyomavirus associated with brain tumors in free-ranging raccoons, western United States.

Novel polyomavirus associated with brain tumors in free-ranging raccoons, western United States.
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DOI:
10.3201/eid1901.121078
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发表时间:
2013-01
影响因子:
11.8
通讯作者:
Pesavento PA
Pesavento PA
中科院分区:
医学2区
文献类型:
--
作者:
Dela Cruz FN Jr;Giannitti F;Li L;Woods LW;Del Valle L;Delwart E;Pesavento PA

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任何类型的肿瘤在浣熊身上都是极其罕见的。2010年3月至2012年5月期间,在加州和俄勒冈州的10只浣熊中检测到高度脑肿瘤,始终位于额叶和嗅束,表明新出现的感染性起源。我们已经确定了一种候选病原体,称为浣熊多瘤病毒,存在于所有受影响动物的肿瘤组织中,但不存在于20只未受影响动物的组织中。Southern印迹杂交和滚环扩增显示肿瘤中存在游离型病毒基因组。多功能核蛋白大T抗原可通过免疫组化分析在一个肿瘤细胞亚群中检测到。浣熊多瘤病毒可能有助于浣熊恶性脑肿瘤的发展。
Tumors of any type are exceedingly rare in raccoons. High-grade brain tumors, consistently located in the frontal lobes and olfactory tracts, were detected in 10 raccoons during March 2010–May 2012 in California and Oregon, suggesting an emerging, infectious origin. We have identified a candidate etiologic agent, dubbed raccoon polyomavirus, that was present in the tumor tissue of all affected animals but not in tissues from 20 unaffected animals. Southern blot hybridization and rolling circle amplification showed the episomal viral genome in the tumors. The multifunctional nuclear protein large T-antigen was detectable by immunohistochemical analyses in a subset of neoplastic cells. Raccoon polyomavirus may contribute to the development of malignant brain tumors of raccoons.
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发表时间: 2010-11-26
期刊: Virology journal
影响因子: 4.8
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