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. 1985 May;82(9):2579–2582. doi: 10.1073/pnas.82.9.2579

Developmental and hormonal regulation of alpha 2u-globulin gene transcription.

A B Kulkarni, R M Gubits, P Feigelson
PMCID: PMC397607  PMID: 2581250

Abstract

Hepatic alpha 2u-globulin protein and RNA levels are under developmental and complex multihormonal control. The present studies directly evaluate the degree to which this regulation is transcriptional. alpha 2u-Globulin transcription was determined by measuring nuclear runoff RNA in vitro, and tissue alpha 2u-globulin mRNA levels were measured by dot blot hybridization. These studies reveal that (i) in male rats the transcriptional rate of the alpha 2u-globulin genes increases during postnatal development; (ii) no alpha 2u-globulin transcription is detectable in hepatic nuclei derived from hypophysectomized rats; (iii) growth hormone and glucocorticoid are both absolutely required, and glucocorticoid can replace androgen for alpha 2u-globulin gene transcription in the livers of hypophysectomized male rats; and (iv) chronic treatment of mature male rats with estrogen results in a progressive decrease in the hepatic transcription of alpha 2u-globulin genes. In all instances changes in the transcriptional rate of alpha 2u-globulin genes paralleled the tissue level of alpha 2u-globulin RNA. Thus transcriptional control predominates in regulating hepatic alpha 2u-globulin RNA levels.

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Selected References

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