Identification of the human mature B cell miRNome.

Identification of the human mature B cell miRNome.
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DOI:
10.1016/j.immuni.2009.03.017
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发表时间:
2009-05
期刊:
影响因子:
32.4
通讯作者:
Dalla-Favera, Riccardo
Dalla-Favera, Riccardo
中科院分区:
医学1区
文献类型:
--
作者:
Basso, Katia;Sumazin, Pavel;Morozov, Pavel;Schneider, Christof;Maute, Roy L.;Kitagawa, Yukiko;Mandelbaum, Jonathan;Haddad, Joseph, Jr.;Chen, Chang-Zheng;Califano, Andrea;Dalla-Favera, Riccardo

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人类基因组中完整的microRNAs (miRNAs)是未知的。由于目前已知的mirna已通过其在少数细胞类型中的丰富表达而被鉴定,许多组织特异性mirna仍未被揭示。为了了解mirna在B细胞功能和淋巴瘤发生中的作用,我们从不同发育阶段的正常人类B细胞(naïve,生发中心,记忆)和伯基特淋巴瘤细胞系中生成了短rna文库。克隆和计算分析相结合,鉴定出178个mirna (miRNome)在正常和/或转化的b细胞文库中表达。最值得注意的是,b细胞miRNome包括75个据我们所知以前未报道的mirna,其中66个已通过RNA印迹和/或RT-PCR分析验证。许多mirna在B细胞中以阶段或转化特异性的方式表达,表明其具有特定的功能或病理作用。这些结果为研究mirna在b细胞发育、免疫功能和淋巴瘤发生中的作用提供了资源。
The full set of microRNAs (miRNAs) in the human genome is not known. Because presently known miRNAs have been identified by virtue of their abundant expression in a few cell types, many tissue-specific miRNAs remain unrevealed. To understand the role of miRNAs in B-cell function and lymphomagenesis, we generated short-RNA libraries from normal human B cells at different stages of development (naïve, germinal-center, memory) and from a Burkitt lymphoma cell-line. A combination of cloning and computational analysis identified 178 miRNAs (miRNome) expressed in normal and/or transformed B-cell libraries. Most notably, the B-cell miRNome included 75 miRNAs which to our knowledge have not been previously reported and of which 66 have been validated by RNA blot and/or RT-PCR analyses. Numerous miRNAs were expressed in a stage- or transformation-specific fashion in B cells, suggesting specific functional or pathologic roles. These results provide a resource for studying the role of miRNAs in B-cell development, immune function, and lymphomagenesis.
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