Hormonal effects on the sulfation of sulfated glycoprotein in a particulate fraction of the endometrium of rabbit uterus.
A particulate fraction was separated from endometrial scrapings of the uterus of hormone- or sham-treated ovariectomized rabbit. The effects of estrogen and progesterone on the incorporation of [35S]sulfate from 3'-[35S]phosphoadenosine 5'-phosphosulfate (PAPS) into endogenous acceptors in the particulate fraction were investigated. Estrogen increased the incorporation of [35S]sulfate, but progesterone suppressed this effect. The results of DEAE-Sephadex A-25 (Cl-form) column chromatography of the pronase digest of the 35S-labeled substances indicated that the fraction eluted with 0.9 M NaCl (0.9 Fr) was most sensitive to the hormones. The major component in 0.9 Fr was resistant to crude heparinase, whereas the minor component was susceptible to this enzyme. The present observation, together with previous findings, suggested that the former was sulfated glycopeptide and the latter heparan sulfate. The results of the present study indicated that PAPS can serve as the direct "activated" sulfate donor in the enzymatic sulfation of sulfated glycoprotein in the particulate fraction, that the sulfation is greatly stimulated by pre-treatment of the rabbit with estrogen, and that the estrogen effect is suppressed by progesterone.
D000818:Animals; D002369:Castration; D002458:Cell Fractionation; D051152:Clusterin; D004717:Endometrium / Q000378:metabolism*; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D006023:Glycoproteins / Q000096:biosynthesis*; D018832:Molecular Chaperones; D009929:Organ Size / Q000187:drug effects; D010724:Phosphoadenosine Phosphosulfate / Q000378:metabolism; D011374:Progesterone / Q000494:pharmacology*; D011817:Rabbits; D014599:Uterus / Q000033:anatomy & histology
D051152:Clusterin; D006023:Glycoproteins; D018832:Molecular Chaperones; D010724:Phosphoadenosine Phosphosulfate; D011374:Progesterone; D004958:Estradiol