Retroviral activation of the mir-106a microRNA cistron in T lymphoma.

Retroviral activation of the mir-106a microRNA cistron in T lymphoma.
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DOI:
10.1186/1742-4690-4-5
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发表时间:
2007-01-25
期刊:
影响因子:
3.3
通讯作者:
Wabl M
Wabl M
中科院分区:
医学2区
文献类型:
--
作者:
Lum AM;Wang BB;Li L;Channa N;Bartha G;Wabl M

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逆转录病毒插入宿主基因组是一个强大的工具,不仅用于发现癌基因,而且用于发现潜在的致癌非编码RNA。在大规模小鼠T淋巴细胞肿瘤筛选中,我们发现mir-106 a microRNA顺反子上游的高密度整合。在含有整合的肿瘤中,与对照肿瘤相比,编码mir-106 a顺反子的初级转录物过表达5至20倍;同时,成熟的mir-106 a和mir-363 microRNA也高度过表达。这些发现表明mir-106 a顺反子在T细胞肿瘤发生中起重要作用。
Retroviral insertion into a host genome is a powerful tool not only for the discovery of cancer genes, but also for the discovery of potential oncogenic noncoding RNAs. In a large-scale mouse T lymphocyte tumor screen we found a high density of integrations upstream of the mir-106a microRNA cistron. In tumors containing an integration, the primary transcript encoding the mir-106a cistron was overexpressed five to 20-fold compared with that of control tumors; concomitantly, the mature mir-106a and mir-363 microRNAs were highly overexpressed as well. These findings suggest the mir-106a cistron plays an important role in T cell tumorigenesis.
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