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NR4A1 Regulates Tamoxifen Resistance by Suppressing ERK Signaling in ER-Positive Breast Cancer

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dc.contributor.author김명희-
dc.contributor.author김유리-
dc.contributor.author오지훈-
dc.contributor.author김유리-
dc.contributor.author오지훈-
dc.date.accessioned2021-09-29T01:07:37Z-
dc.date.available2021-09-29T01:07:37Z-
dc.date.issued2021-06-
dc.identifier.issn2073-4409-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/184209-
dc.description.abstractEndocrine therapy is used to treat estrogen receptor (ER)-positive breast cancer. Tamoxifen is effective against this cancer subtype. Nonetheless, approximately 30% of patients treated with tamoxifen acquire resistance, resulting in therapeutic challenges. NR4A1 plays key roles in processes associated with carcinogenesis, apoptosis, DNA repair, proliferation, and inflammation. However, the role of NR4A1 in tamoxifen-resistant ER-positive breast cancer has not yet been elucidated. Here, we propose that NR4A1 is a promising target to overcome tamoxifen resistance. NR4A1 gene expression was downregulated in tamoxifen-resistant MCF7 (TamR) cells compared to that in MCF7 cells. Kaplan-Meier plots were used to identify high NR4A1 expression correlated with increased survival rates in patients with ER-positive breast cancer following tamoxifen treatment. Gain and loss of function experiments showed that NR4A1 restores sensitivity to tamoxifen by regulating cell proliferation, migration, invasion, and apoptosis. NR4A1 localized to the cytoplasm enhanced the expression of apoptotic factors. In silico and in vitro analyses revealed that NR4A1 enhanced responsiveness to tamoxifen by suppressing ERK signaling in ER-positive breast cancer, suggesting that the NR4A1/ERK signaling axis modulates tamoxifen resistance. These results indicate that NR4A1 could be a potential therapeutic target to overcome tamoxifen resistance in ER-positive breast cancer.-
dc.description.statementOfResponsibilityopen-
dc.languageEnglish-
dc.publisherMDPI-
dc.relation.isPartOfCELLS(Cells)-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.titleNR4A1 Regulates Tamoxifen Resistance by Suppressing ERK Signaling in ER-Positive Breast Cancer-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Anatomy (해부학교실)-
dc.contributor.googleauthorYu Cheon Kim-
dc.contributor.googleauthorClara Yuri Kim-
dc.contributor.googleauthorJi Hoon Oh-
dc.contributor.googleauthorMyoung Hee Kim-
dc.identifier.doi10.3390/cells10071633-
dc.contributor.localIdA00432-
dc.contributor.localIdA05900-
dc.contributor.localIdA02400-
dc.contributor.localIdA05900-
dc.contributor.localIdA02400-
dc.relation.journalcodeJ03774-
dc.identifier.pmid34209871-
dc.subject.keywordERK signaling pathway-
dc.subject.keywordNR4A1-
dc.subject.keywordbreast cancer-
dc.subject.keywordtamoxifen resistance-
dc.contributor.alternativeNameKim, Myoung Hee-
dc.contributor.affiliatedAuthor김명희-
dc.contributor.affiliatedAuthor김유리-
dc.contributor.affiliatedAuthor오지훈-
dc.contributor.affiliatedAuthor김유리-
dc.contributor.affiliatedAuthor오지훈-
dc.citation.volume10-
dc.citation.number7-
dc.citation.startPage1633-
dc.identifier.bibliographicCitationCELLS, Vol.10(7) : 1633, 2021-06-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers

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