Biphasic regulation of the messenger ribonucleic acid coding for the estrogen receptor by cyclic adenosine 3':5'-monophosphate in tumor Leydig cells
In this report we show that the mRNA level for the estrogen receptor (ER) is regulated by 8-bromo cyclic AMP (8-Br-cAMP) and human chorionic gonadotropin in a mouse tumor Leydig cell line (MA-10 cells). When the MA-10 cells were cultured in the presence of the cAMP analogue for varying time periods,...
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Veröffentlicht in: | Cancer research (Chicago, Ill.) Ill.), 1990-03, Vol.50 (5), p.1528-1531 |
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description | In this report we show that the mRNA level for the estrogen receptor (ER) is regulated by 8-bromo cyclic AMP (8-Br-cAMP) and human chorionic gonadotropin in a mouse tumor Leydig cell line (MA-10 cells). When the MA-10 cells were cultured in the presence of the cAMP analogue for varying time periods, a transient increase in the level of ER mRNA was observed. Short time incubation (0-2 h) with 8-Br-cAMP enhanced the expression of ER mRNA (2-fold), whereas longer times of incubation (6 h) had the opposite effect (the level of ER mRNA was reduced by 60-70%). The inhibitory effect of 8-Br-cAMP on ER mRNA was not counteracted by aminoglutethimide, an inhibitor of steroidogenic enzymes, indicating that this effect is not mediated via steroids (progesterone). Treatment of 8-Br-cAMP for 6 h caused a concentration-dependent inhibition of ER mRNA with a half-maximal effect of approximately 150 microM. Increasing concentrations of human chorionic gonadotropin for 6 h was also associated with a biphasic effect on the ER mRNA level. Low concentrations (0.20-0.40 ng/ml) increased ER mRNA in the MA-10 cells whereas the highest concentration (20 ng/ml) caused a suppression of this mRNA. In contrast to the biphasic effects observed for the ER mRNA, the level of the regulatory subunit type II beta of the cAMP-dependent protein kinase (protein kinase A) was enhanced in a concentration-dependent manner by human chorionic gonadotropin. Furthermore, 8-Br-cAMP stimulated the mRNA for regulatory subunit type II beta (10- to 20-fold) by all concentrations examined (50-1000 microM). The observations reported here indicate that the expression of ER mRNA is regulated both by endogenously formed and exogenously added cAMP and that there may exist regulatory loops between the steroid and the cAMP/protein kinase A systems. |
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When the MA-10 cells were cultured in the presence of the cAMP analogue for varying time periods, a transient increase in the level of ER mRNA was observed. Short time incubation (0-2 h) with 8-Br-cAMP enhanced the expression of ER mRNA (2-fold), whereas longer times of incubation (6 h) had the opposite effect (the level of ER mRNA was reduced by 60-70%). The inhibitory effect of 8-Br-cAMP on ER mRNA was not counteracted by aminoglutethimide, an inhibitor of steroidogenic enzymes, indicating that this effect is not mediated via steroids (progesterone). Treatment of 8-Br-cAMP for 6 h caused a concentration-dependent inhibition of ER mRNA with a half-maximal effect of approximately 150 microM. Increasing concentrations of human chorionic gonadotropin for 6 h was also associated with a biphasic effect on the ER mRNA level. Low concentrations (0.20-0.40 ng/ml) increased ER mRNA in the MA-10 cells whereas the highest concentration (20 ng/ml) caused a suppression of this mRNA. In contrast to the biphasic effects observed for the ER mRNA, the level of the regulatory subunit type II beta of the cAMP-dependent protein kinase (protein kinase A) was enhanced in a concentration-dependent manner by human chorionic gonadotropin. Furthermore, 8-Br-cAMP stimulated the mRNA for regulatory subunit type II beta (10- to 20-fold) by all concentrations examined (50-1000 microM). The observations reported here indicate that the expression of ER mRNA is regulated both by endogenously formed and exogenously added cAMP and that there may exist regulatory loops between the steroid and the cAMP/protein kinase A systems.</description><identifier>ISSN: 0008-5472</identifier><identifier>EISSN: 1538-7445</identifier><identifier>PMID: 2154326</identifier><identifier>CODEN: CNREA8</identifier><language>eng</language><publisher>Philadelphia, PA: American Association for Cancer Research</publisher><subject>8-Bromo Cyclic Adenosine Monophosphate - pharmacology ; Animal tumors. Experimental tumors ; Animals ; Biological and medical sciences ; Chorionic Gonadotropin - pharmacology ; cyclic AMP ; Cyclic AMP - physiology ; Down-Regulation ; Experimental genital and mammary tumors ; Leydig Cell Tumor - genetics ; Leydig Cell Tumor - metabolism ; Leydig cells ; Medical sciences ; mRNA ; Receptors, Estrogen - biosynthesis ; Receptors, Estrogen - genetics ; RNA, Messenger - biosynthesis ; Time Factors ; Tumor Cells, Cultured ; Tumors</subject><ispartof>Cancer research (Chicago, Ill.), 1990-03, Vol.50 (5), p.1528-1531</ispartof><rights>1990 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=6863243$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/2154326$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>HANSEN REE, A</creatorcontrib><creatorcontrib>FROÊYSA, A</creatorcontrib><creatorcontrib>ESKILD, W</creatorcontrib><creatorcontrib>JAHNSEN, T</creatorcontrib><creatorcontrib>HANSSON, V</creatorcontrib><title>Biphasic regulation of the messenger ribonucleic acid coding for the estrogen receptor by cyclic adenosine 3':5'-monophosphate in tumor Leydig cells</title><title>Cancer research (Chicago, Ill.)</title><addtitle>Cancer Res</addtitle><description>In this report we show that the mRNA level for the estrogen receptor (ER) is regulated by 8-bromo cyclic AMP (8-Br-cAMP) and human chorionic gonadotropin in a mouse tumor Leydig cell line (MA-10 cells). When the MA-10 cells were cultured in the presence of the cAMP analogue for varying time periods, a transient increase in the level of ER mRNA was observed. Short time incubation (0-2 h) with 8-Br-cAMP enhanced the expression of ER mRNA (2-fold), whereas longer times of incubation (6 h) had the opposite effect (the level of ER mRNA was reduced by 60-70%). The inhibitory effect of 8-Br-cAMP on ER mRNA was not counteracted by aminoglutethimide, an inhibitor of steroidogenic enzymes, indicating that this effect is not mediated via steroids (progesterone). Treatment of 8-Br-cAMP for 6 h caused a concentration-dependent inhibition of ER mRNA with a half-maximal effect of approximately 150 microM. Increasing concentrations of human chorionic gonadotropin for 6 h was also associated with a biphasic effect on the ER mRNA level. Low concentrations (0.20-0.40 ng/ml) increased ER mRNA in the MA-10 cells whereas the highest concentration (20 ng/ml) caused a suppression of this mRNA. In contrast to the biphasic effects observed for the ER mRNA, the level of the regulatory subunit type II beta of the cAMP-dependent protein kinase (protein kinase A) was enhanced in a concentration-dependent manner by human chorionic gonadotropin. Furthermore, 8-Br-cAMP stimulated the mRNA for regulatory subunit type II beta (10- to 20-fold) by all concentrations examined (50-1000 microM). The observations reported here indicate that the expression of ER mRNA is regulated both by endogenously formed and exogenously added cAMP and that there may exist regulatory loops between the steroid and the cAMP/protein kinase A systems.</description><subject>8-Bromo Cyclic Adenosine Monophosphate - pharmacology</subject><subject>Animal tumors. Experimental tumors</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Chorionic Gonadotropin - pharmacology</subject><subject>cyclic AMP</subject><subject>Cyclic AMP - physiology</subject><subject>Down-Regulation</subject><subject>Experimental genital and mammary tumors</subject><subject>Leydig Cell Tumor - genetics</subject><subject>Leydig Cell Tumor - metabolism</subject><subject>Leydig cells</subject><subject>Medical sciences</subject><subject>mRNA</subject><subject>Receptors, Estrogen - biosynthesis</subject><subject>Receptors, Estrogen - genetics</subject><subject>RNA, Messenger - biosynthesis</subject><subject>Time Factors</subject><subject>Tumor Cells, Cultured</subject><subject>Tumors</subject><issn>0008-5472</issn><issn>1538-7445</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkLtOwzAUhiMEKqXwCEgeEJ0iOb4lYQPETarEAnNlO8epUWIHOxnyHjwwLlSsTD4-_3du_1G2LDit8pIxfpwtMcZVzllJTrOzGD_SlxeYL7IFKTijRCyzrzs77GS0GgVop06O1jvkDRp3gHqIEVwLAQWrvJt0B4mT2jZI-8a6FhkffkiIY_AtuNREwzCmrJqRnnW35xtwPloHiK5v-DrvvfPDzsc0dgRkHRqnPhVsYG5sizR0XTzPTozsIlwc3lX2_vjwdv-cb16fXu5vN_mO1PWYU6J4JTDFBIsUKizBKK6L2jTAG2EKxWsBRb2XcYm1MgJqZRjTTGJSEbrKrn_7DsF_TumIbW_jfgPpwE9xW9aiYHVy6j8wucnLkhYJvDyAk-qh2Q7B9jLM24PfSb866DJq2ZkgnbbxDxOVoIRR-g3foYtu</recordid><startdate>19900301</startdate><enddate>19900301</enddate><creator>HANSEN REE, A</creator><creator>FROÊYSA, A</creator><creator>ESKILD, W</creator><creator>JAHNSEN, T</creator><creator>HANSSON, V</creator><general>American Association for Cancer Research</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7T3</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>19900301</creationdate><title>Biphasic regulation of the messenger ribonucleic acid coding for the estrogen receptor by cyclic adenosine 3':5'-monophosphate in tumor Leydig cells</title><author>HANSEN REE, A ; FROÊYSA, A ; ESKILD, W ; JAHNSEN, T ; HANSSON, V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-h299t-32b5860302062b5b0aefb5c19fde5d6f1b596e192062070cbf6e9bf44c4a02823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>8-Bromo Cyclic Adenosine Monophosphate - pharmacology</topic><topic>Animal tumors. Experimental tumors</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Chorionic Gonadotropin - pharmacology</topic><topic>cyclic AMP</topic><topic>Cyclic AMP - physiology</topic><topic>Down-Regulation</topic><topic>Experimental genital and mammary tumors</topic><topic>Leydig Cell Tumor - genetics</topic><topic>Leydig Cell Tumor - metabolism</topic><topic>Leydig cells</topic><topic>Medical sciences</topic><topic>mRNA</topic><topic>Receptors, Estrogen - biosynthesis</topic><topic>Receptors, Estrogen - genetics</topic><topic>RNA, Messenger - biosynthesis</topic><topic>Time Factors</topic><topic>Tumor Cells, Cultured</topic><topic>Tumors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HANSEN REE, A</creatorcontrib><creatorcontrib>FROÊYSA, A</creatorcontrib><creatorcontrib>ESKILD, W</creatorcontrib><creatorcontrib>JAHNSEN, T</creatorcontrib><creatorcontrib>HANSSON, V</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>Human Genome Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Cancer research (Chicago, Ill.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HANSEN REE, A</au><au>FROÊYSA, A</au><au>ESKILD, W</au><au>JAHNSEN, T</au><au>HANSSON, V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biphasic regulation of the messenger ribonucleic acid coding for the estrogen receptor by cyclic adenosine 3':5'-monophosphate in tumor Leydig cells</atitle><jtitle>Cancer research (Chicago, Ill.)</jtitle><addtitle>Cancer Res</addtitle><date>1990-03-01</date><risdate>1990</risdate><volume>50</volume><issue>5</issue><spage>1528</spage><epage>1531</epage><pages>1528-1531</pages><issn>0008-5472</issn><eissn>1538-7445</eissn><coden>CNREA8</coden><abstract>In this report we show that the mRNA level for the estrogen receptor (ER) is regulated by 8-bromo cyclic AMP (8-Br-cAMP) and human chorionic gonadotropin in a mouse tumor Leydig cell line (MA-10 cells). When the MA-10 cells were cultured in the presence of the cAMP analogue for varying time periods, a transient increase in the level of ER mRNA was observed. Short time incubation (0-2 h) with 8-Br-cAMP enhanced the expression of ER mRNA (2-fold), whereas longer times of incubation (6 h) had the opposite effect (the level of ER mRNA was reduced by 60-70%). The inhibitory effect of 8-Br-cAMP on ER mRNA was not counteracted by aminoglutethimide, an inhibitor of steroidogenic enzymes, indicating that this effect is not mediated via steroids (progesterone). Treatment of 8-Br-cAMP for 6 h caused a concentration-dependent inhibition of ER mRNA with a half-maximal effect of approximately 150 microM. Increasing concentrations of human chorionic gonadotropin for 6 h was also associated with a biphasic effect on the ER mRNA level. Low concentrations (0.20-0.40 ng/ml) increased ER mRNA in the MA-10 cells whereas the highest concentration (20 ng/ml) caused a suppression of this mRNA. In contrast to the biphasic effects observed for the ER mRNA, the level of the regulatory subunit type II beta of the cAMP-dependent protein kinase (protein kinase A) was enhanced in a concentration-dependent manner by human chorionic gonadotropin. Furthermore, 8-Br-cAMP stimulated the mRNA for regulatory subunit type II beta (10- to 20-fold) by all concentrations examined (50-1000 microM). The observations reported here indicate that the expression of ER mRNA is regulated both by endogenously formed and exogenously added cAMP and that there may exist regulatory loops between the steroid and the cAMP/protein kinase A systems.</abstract><cop>Philadelphia, PA</cop><pub>American Association for Cancer Research</pub><pmid>2154326</pmid><tpages>4</tpages></addata></record> |
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subjects | 8-Bromo Cyclic Adenosine Monophosphate - pharmacology Animal tumors. Experimental tumors Animals Biological and medical sciences Chorionic Gonadotropin - pharmacology cyclic AMP Cyclic AMP - physiology Down-Regulation Experimental genital and mammary tumors Leydig Cell Tumor - genetics Leydig Cell Tumor - metabolism Leydig cells Medical sciences mRNA Receptors, Estrogen - biosynthesis Receptors, Estrogen - genetics RNA, Messenger - biosynthesis Time Factors Tumor Cells, Cultured Tumors |
title | Biphasic regulation of the messenger ribonucleic acid coding for the estrogen receptor by cyclic adenosine 3':5'-monophosphate in tumor Leydig cells |
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