Tamoxifen and Endometrial Cancer: A Janus-Headed Drug

Tamoxifen is a selective estrogen receptor modulator used for the treatment and prevention of estrogen receptor (ER)—positive breast cancer. However, tamoxifen increases the risk of endometrial cancer (EC) by about 2–7 fold, and more aggressive types of EC with poor prognoses are observed in tamoxif...

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Main Authors: Günter Emons, Alexander Mustea, Clemens Tempfer
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/12/9/2535
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author Günter Emons
Alexander Mustea
Clemens Tempfer
author_facet Günter Emons
Alexander Mustea
Clemens Tempfer
author_sort Günter Emons
collection DOAJ
description Tamoxifen is a selective estrogen receptor modulator used for the treatment and prevention of estrogen receptor (ER)—positive breast cancer. However, tamoxifen increases the risk of endometrial cancer (EC) by about 2–7 fold, and more aggressive types of EC with poor prognoses are observed in tamoxifen users. On the other hand, tamoxifen is an efficacious treatment for advanced or recurrent EC with low toxicity. The differential agonistic or antagonistic effects of tamoxifen on ERα are explained by the tissue-specific expression profiles of co-activators and co-repressors of the receptor. The estrogen-agonistic effect of tamoxifen in endometrial cancers can also be explained by the expression of G-protein coupled estrogen receptor 1 (GPER-1), a membrane-bound estrogen receptor for which tamoxifen and other “antiestrogens” are pure agonists.
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spelling doaj.art-c3020f5326354c62b92e383aaf5f61092023-11-20T12:48:02ZengMDPI AGCancers2072-66942020-09-01129253510.3390/cancers12092535Tamoxifen and Endometrial Cancer: A Janus-Headed DrugGünter Emons0Alexander Mustea1Clemens Tempfer2Department of Obstetrics and Gynecology, Georg-August-University, 37075 Göttingen, GermanyDepartment of Gynecology and Gynecological Oncology, University Hospital, 53127 Bonn, GermanyDepartment of Obstetrics and Gynecology, Ruhr University, 44625 Herne, GermanyTamoxifen is a selective estrogen receptor modulator used for the treatment and prevention of estrogen receptor (ER)—positive breast cancer. However, tamoxifen increases the risk of endometrial cancer (EC) by about 2–7 fold, and more aggressive types of EC with poor prognoses are observed in tamoxifen users. On the other hand, tamoxifen is an efficacious treatment for advanced or recurrent EC with low toxicity. The differential agonistic or antagonistic effects of tamoxifen on ERα are explained by the tissue-specific expression profiles of co-activators and co-repressors of the receptor. The estrogen-agonistic effect of tamoxifen in endometrial cancers can also be explained by the expression of G-protein coupled estrogen receptor 1 (GPER-1), a membrane-bound estrogen receptor for which tamoxifen and other “antiestrogens” are pure agonists.https://www.mdpi.com/2072-6694/12/9/2535tamoxifenendometrial cancerselective estrogen receptor modulator
spellingShingle Günter Emons
Alexander Mustea
Clemens Tempfer
Tamoxifen and Endometrial Cancer: A Janus-Headed Drug
Cancers
tamoxifen
endometrial cancer
selective estrogen receptor modulator
title Tamoxifen and Endometrial Cancer: A Janus-Headed Drug
title_full Tamoxifen and Endometrial Cancer: A Janus-Headed Drug
title_fullStr Tamoxifen and Endometrial Cancer: A Janus-Headed Drug
title_full_unstemmed Tamoxifen and Endometrial Cancer: A Janus-Headed Drug
title_short Tamoxifen and Endometrial Cancer: A Janus-Headed Drug
title_sort tamoxifen and endometrial cancer a janus headed drug
topic tamoxifen
endometrial cancer
selective estrogen receptor modulator
url https://www.mdpi.com/2072-6694/12/9/2535
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