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Coordinated posttranscriptional control of gene expression by modular elements including Alu-like repetitive sequences.


ABSTRACT: We previously reported that in rat fibroblasts, accumulation of a set of mRNAs ("pIL genes") was modulated as a function of cell growth and transformation, at a posttranscriptional stage, and by a mechanism that depends on a short nucleotide sequence containing an ID repetitive element. In mouse fibroblasts, hybridization with rat pIL probes identified mRNAs with the same pattern of expression, which did not contain ID sequences but contained a different regulatory element, encompassing a repetitive sequence of the B1 family. Expression in mouse cells of a reporter beta-globin gene carrying this element inserted in its 3' noncoding region was growth- and transformation-dependent. The nucleotide sequences of two murine and of three rat pIL cDNAs showed clear similarities in the region immediately adjacent to the ID and B1 repeats. Both the repeat and the flanking sequence were required to confer on beta-globin constructs the pattern of expression characteristic of the pIL genes. The hypothesis is presented that repetitive sequences in the eukaryotic genome might be modular parts of complex regulatory elements ensuring the coordinated expression of various mRNA species.

SUBMITTER: Vidal F 

PROVIDER: S-EPMC45629 | biostudies-other | 1993 Jan

REPOSITORIES: biostudies-other

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Coordinated posttranscriptional control of gene expression by modular elements including Alu-like repetitive sequences.

Vidal F F   Mougneau E E   Glaichenhaus N N   Vaigot P P   Darmon M M   Cuzin F F  

Proceedings of the National Academy of Sciences of the United States of America 19930101 1


We previously reported that in rat fibroblasts, accumulation of a set of mRNAs ("pIL genes") was modulated as a function of cell growth and transformation, at a posttranscriptional stage, and by a mechanism that depends on a short nucleotide sequence containing an ID repetitive element. In mouse fibroblasts, hybridization with rat pIL probes identified mRNAs with the same pattern of expression, which did not contain ID sequences but contained a different regulatory element, encompassing a repeti  ...[more]

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