Author： Ustyugova Svetlana Lebedev Yuri Sverdlov Eugene
Publisher： Springer Publishing Company
ISSN： 0016-6707
Source： Genetica, Vol.128, Iss.1-3, 2006-09, pp. : 261-272
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Abstract
LINE-1 (L1) retrotransposons comprise about 17% of the human genome and include a recently transposed set of Ta-L1 elements that are polymorphic in humans. Although it is widely believed that L1s play an essential role in shaping and functioning of mammalian genomes, the understanding of the impact of L1 insertions on gene expression is far from being comprehensive. Here we compared hnRNA contents for allele pairs of genes heterozygous for Ta-L1 insertions in their introns in human cell lines of various origin. We demonstrated that some Ta-L1 insertions correlated with decreased content of the corresponding hnRNAs. This effect was characteristic of only nearly full-sized L1s and seemed to be tissue specific.
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