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Endocrinology, Vol 120, 1403-1410, Copyright © 1987 by Endocrine Society

ARTICLES

Estrogen regulation of alpha 1(I)-procollagen messenger ribonucleic acid in the rat uterus

BS Komm, FR Frankel, JC Myers and CR Lyttle

A cDNA library, prepared from mRNA isolated from the uteri of 3-day estradiol-stimulated immature rats, was constructed in pBR322. From this library an estrogen-regulated clone, pERU3, was isolated. This clone contained sequences complementary to uterine mRNA that migrated during gel electrophoresis as a double band of about 5.0 and 5.8 kilobases. Little of this mRNA was seen in several other tissues examined. An increase in the amount of this RNA in uterus was seen 2 h after estradiol treatment, with maximum hybridization occurring, in different experiments, between 18 and 36 h, followed by a decline. Hybridization of the cDNA insert of the pERU3 plasmid with known probes indicated that it coded for alpha 1(I)-procollagen. This conclusion was supported by in vitro translation experiments in which the hybrid- selected mRNA complementary to pERU3 DNA was shown to code for a collagenase-sensitive protein with a size corresponding to that of alpha 1(I)-procollagen. This system, therefore, provides an additional tool for the study of the estrogen regulation of gene expression in the uterus.


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Copyright © 1987 by The Endocrine Society