Abstract:
:The importance of individual microRNAs (miRNAs) has been established in specific cancers. However, a comprehensive analysis of the contribution of miRNAs to the pathogenesis of any specific cancer is lacking. Here we show that in T-cell acute lymphoblastic leukemia (T-ALL), a small set of miRNAs is responsible for the cooperative suppression of several tumor suppressor genes. Cross-comparison of miRNA expression profiles in human T-ALL with the results of an unbiased miRNA library screen allowed us to identify five miRNAs (miR-19b, miR-20a, miR-26a, miR-92 and miR-223) that are capable of promoting T-ALL development in a mouse model and which account for the majority of miRNA expression in human T-ALL. Moreover, these miRNAs produce overlapping and cooperative effects on tumor suppressor genes implicated in the pathogenesis of T-ALL, including IKAROS (also known as IKZF1), PTEN, BIM, PHF6, NF1 and FBXW7. Thus, a comprehensive and unbiased analysis of miRNA action in T-ALL reveals a striking pattern of miRNA-tumor suppressor gene interactions in this cancer.
journal_name
Nat Genetjournal_title
Nature geneticsauthors
Mavrakis KJ,Van Der Meulen J,Wolfe AL,Liu X,Mets E,Taghon T,Khan AA,Setty M,Rondou P,Vandenberghe P,Delabesse E,Benoit Y,Socci NB,Leslie CS,Van Vlierberghe P,Speleman F,Wendel HGdoi
10.1038/ng.858subject
Has Abstractpub_date
2011-06-05 00:00:00pages
673-8issue
7eissn
1061-4036issn
1546-1718pii
ng.858journal_volume
43pub_type
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