| Effects of retinoic acid on differentiation of choriocarcinoma cells in vitro. | |
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MedLine Citation:
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PMID: 6176589 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Choriocarcinoma cells maintain multiple hormonal functions in culture. We have found that these cells secreted no immunoreactive pregnancy-specific beta 1-glycoprotein (PS beta G), a placental protein. Choriocarcinoma cells can be induced to synthesize low levels of PS beta G by retinoic acid, 8-bromo-cAMP (8BrcAMP), cholera toxin, methyl-isobutylxanthine (MIX), and 5-bromo-2'-deoxyuridine (BrdUrd). The simultaneous addition of retinoic acid along with 8BrcAMP, cholera toxin, or MIX gave synergistic induction of PS beta G. The simultaneous addition of retinoic acid and BrdUrd failed to give even additive induction. In addition to stimulating PS beta G production, retinoic acid increased the production of hCG and its alpha-subunit (hCG alpha) by choriocarcinoma cells. The simultaneous addition of retinoic acid along with 8BrcAMP, cholera toxin, or MIX gave additive induction for hCG and hCG alpha. Passage of choriocarcinoma cells in medium containing retinoic acid induced a stable altered phenotype characterized by elevated levels of PS beta G, hCG, and hCG alpha. These retinoid-treated choriocarcinoma cells remained responsive to 8BrcAMP or compounds that increase intracellular cAMP concentrations and to BrdUrd; the production to PS beta G and hCG was greatly stimulated by 8BrcAMP, cholera toxin, or MIX, and the production of hCG and hCG alpha was greatly inhibited by BrdUrd. However, the production of hCG alpha was only slightly induced by these cAMP modulators, and the production of PS beta G was not increased by BrdUrd. |
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Authors:
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J Y Chou |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: The Journal of clinical endocrinology and metabolism Volume: 54 ISSN: 0021-972X ISO Abbreviation: J. Clin. Endocrinol. Metab. Publication Date: 1982 Jun |
Date Detail:
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Created Date: 1982-07-19 Completed Date: 1982-07-19 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0375362 Medline TA: J Clin Endocrinol Metab Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1174-80 Citation Subset: AIM; IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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1-Methyl-3-isobutylxanthine
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pharmacology 8-Bromo Cyclic Adenosine Monophosphate Cell Line Cell Transformation, Neoplastic / drug effects* Cholera Toxin / pharmacology Choriocarcinoma / metabolism* Chorionic Gonadotropin / biosynthesis Cyclic AMP / analogs & derivatives, pharmacology Deoxyuracil Nucleotides* Female Fluorodeoxyuridylate / analogs & derivatives, pharmacology Humans Pregnancy Pregnancy-Specific beta 1-Glycoproteins / biosynthesis Tretinoin / pharmacology* Uterine Neoplasms / metabolism* |
| Grant Support | |
ID/Acronym/Agency:
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N01-HD-9-2827/HD/NICHD NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Chorionic Gonadotropin; 0/Deoxyuracil Nucleotides; 0/Pregnancy-Specific beta 1-Glycoproteins; 134-46-3/Fluorodeoxyuridylate; 23583-48-4/8-Bromo Cyclic Adenosine Monophosphate; 28822-58-4/1-Methyl-3-isobutylxanthine; 302-79-4/Tretinoin; 60-92-4/Cyclic AMP; 6666-38-2/bromodeoxyuridylate; 9012-63-9/Cholera Toxin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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