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A single beta-globin locus control region element (5' hypersensitive site 2) is sufficient for developmental regulation of human globin genes in transgenic mice.

B J Morley·C A Abbott·J A Sharpe·J Lida·P S Chan-Thomas·W G Wood
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Abstract

The beta-globin gene complex is regulated by an upstream locus control region (LCR) which is responsible for high-level, position-independent, erythroid-cell-specific expression of the genes in the cluster. Its role in the developmental regulation of beta-like globin gene transcription remains to be established. We have examined the effect of a single LCR element, hypersensitive site 2 (HS2), on the developmental regulation of the human fetal gamma and adult beta genes in transgenic mice. In mice bearing HS2A gamma beta and HS2G gamma A gamma-117 delta beta human globin gene constructs, switching from gamma- to beta-gene expression begins at about day 13.5 of gestation and is largely completed shortly after birth. The larger construct also demonstrates a switch in G gamma- to A gamma-gene expression during the gamma-to-beta switch similar to that observed during normal human development. We conclude that HS2 alone is sufficient for developmental regulation of the human beta-globin genes.

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AgingAnimalsCrosses, GeneticDNAFemaleGene Expression RegulationGenes, RegulatorGestational AgeGlobinsHemoglobinsHumansMaleMiceMice, TransgenicMultigene FamilyRNARNA, MessengerRegulatory Sequences, Nucleic AcidRestriction MappingTranscription, GeneticJournal Article

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B J Morley, C A Abbott, J A Sharpe, J Lida, P S Chan-Thomas, W G Wood. 1992. A single beta-globin locus control region element (5' hypersensitive site 2) is sufficient for developmental regulation of human globin genes in transgenic mice.. https://doi.org/10.1128/mcb.12.5.2057-2066.1992

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