Evidence map›Paper›PMID 33001337›Full record

ArticleBreast cancer research and treatment2021

Contrasting activities of estrogen receptor beta isoforms in triple negative breast cancer.

Shunchao Yan, Parama Dey, Yvonne Ziegler, Xin Jiao, Sung Hoon Kim, John A Katzenellenbogen, Benita S Katzenellenbogen

Open access · greenAbstract read
In one paragraph

Article in Breast cancer research and treatment, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.5field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 32 citations in OpenAlex.

  1. Estrogen Receptor Beta Isoforms Interplay Integrates Nuclear and Extra-Nuclear Signaling to Modulate Human Granulosa Cell Growth.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
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  19. Frontiers in oncology · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 2 countries.

Shunchao YanDepartment of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
Parama DeyDepartment of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Yvonne ZieglerDepartment of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Xin JiaoDepartment of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Sung Hoon KimDepartment of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
John A KatzenellenbogenDepartment of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Benita S KatzenellenbogenDepartment of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. katzenel@illinois.edu.ORCID http://orcid.org/0000-0002-8847-2752
University of Illinois Urbana-Champaign · US

Funding

Chemical, structural and molecular rules for fully antagonizing the estrogen receptorR01CA220284 · NCI · UNIVERSITY OF FLORIDA · PI KATZENELLENBOGEN, BENITA S, KATZENELLENBOGEN, JOHN A. · 2018 to 2022
$2.8M
Breast Cancer Research Foundation BCRF-083Breast Cancer Research Foundation BCRF-084NCI NIH HHS 1R01 CA220284NCI NIH HHS R01 CA220284
6 · The paper itself

Abstract

purposeTriple negative breast cancer (TNBC), an aggressive subtype of breast cancer, lacks the three major receptors for predicting outcome or targeting therapy. Hence, our aim was to evaluate the potential of estrogen receptor beta (ERβ) as a possible endocrine therapy target in TNBC.

methodsThe expression and prognostic effect of ERβ isoforms were analyzed using TCGA breast tumor data, and the expression of ERβ isoform mRNA and protein in TNBC cell lines was assayed. Endogenous ERβ2 and ERβ5 were knocked down with siRNA, and ERβ2, ERβ5, and ERβ1 were upregulated using a doxycycline-inducible lentiviral system. Cell proliferation, migration and invasion, and specific gene expressions were evaluated.

resultsERβ2 and ERβ5 were the predominant endogenous forms of ERβ in TNBC tumors and cell lines. High ERβ2 predicted worse clinical outcome. Knockdown of endogenous ERβ2/ERβ5 in cell lines suppressed proliferation, migration and invasion, and downregulated proto-oncogene survivin expression. ERβ2/ERβ5 upregulation did the reverse, increasing survivin and these cell activities. ERβ1 was barely detectable in TNBC cell lines, but its upregulation reduced survivin, increased tumor suppressor expression (E-cadherin and cystatins), and suppressed proliferation, migration and invasion in both ligand-independent and dependent manners, suggesting the possible translational benefit of ERβ ligands.

conclusionsERβ2/ERβ5 and ERβ1 exhibit sharply contrasting activities in TNBC cells. Our findings imply that delineating the absolute amounts and relative ratios of the different ERβ isoforms might have prognostic and therapeutic relevance, and could enable better selection of optimal approaches for treatment of this often aggressive form of breast cancer.

Indexed as

Breast NeoplasmsEstrogen Receptor betaProtein IsoformsTriple Negative Breast NeoplasmsHumansPrognosisProto-Oncogene MasRNA, MessengerEstrogen Receptor betaMAS1 protein, humanProtein IsoformsProto-Oncogene MasRNA, MessengerEstrogen receptor beta (ERβ)InvasionMigrationProliferationTriple negative breast cancer (TNBC)

Identifiers

PMID33001337
PMCPMC7867590
OpenAlexW3089911641

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.