Cited by 44Endometriosis Research and TreatmentMitochondrial Function and PathologyEstrogen and related hormone effects

Mitochondrial translocation of estrogen receptor Β affords resistance to oxidative insult-induced apoptosis and contributes to the pathogenesis of endometriosis

Liao, Tien-Ling, Lee, Yu-Ching, Tzeng, Chii-Ruey, Wang, Yi-Pei, Chang, Heng-Yu, Lin, Yung-Feng, Kao, Shu-Huei·2019·Free Radical Biology and Medicine

Abstract

Endometriosis is the major cause of female infertility and has been linked to the action of estrogen and estrogen receptor (ER). A new pool of ERβ locates within mitochondria, which regulates the endometriotic cell withstanding external insults, but its effect remains controversial. We hypothesize that mitochondrial estrogen receptor ERβ (mtERβ) is a pivotal regulator in estradiol-mediated cell protection leading to the endometriotic progression. We observed elevated levels of ERβ in the endometriotic tissues. A dramatic increase of ERβ in mitochondria (mtERβ) was found in the ectopic endometriotic tissues, or the estradiol-primed primary endometriotic cells. We analyzed the mtERβ-specific overexpressing clone (mtsERβ), which exhibited higher mitochondrial bioenergetics and lower reactive oxygen species (ROS) generation. The mtsERβ-overexpressed endometriotic cells displayed an enhanced migration phenotype, whereas significantly attenuated migration by mitochondrial respiratory inhibitor (oligomycin) or ERβ deficiency by shERβ. Further investigations revealed that ERβ directly modulated mitochondrial DNA (mtDNA) gene expression by interacting with mtDNA D-loop and polymerase γ. The mtsERβ afforded a resistance to oxidative insult-induced apoptosis through the induction of the ROS scavenger enzyme Mn-superoxide dismutase and anti-apoptotic protein Bcl-2. Collectively, the demonstration of mtERβ responses in restoration of mitochondrial bioenergetics and inhibition of mitochondria-dependent apoptotic events provides insight into the pathogenesis of endometriosis, suggesting ERβ-selective estrogen receptor modulator may serve as novel therapeutics of endometriosis in the future.

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Crossref · 10.1016/j.freeradbiomed.2019.01.022

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Authors
Liao, T.-L., Lee, Y.-C., Tzeng, C.-R., Wang, Y.-P., Chang, H.-Y., Lin, Y.-F., & Kao, S.-H.
Affiliations
  • Taipei Medical University (TW)
  • Taipei Medical University Hospital (TW)
Corresponding author
Kao, Shu-Huei
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2019-04
Volume
134
Pages
359-373
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2914087220
Cited by
44
References
47
Citations by year
2026: 3 · 2025: 8 · 2024: 5 · 2023: 7 · 2022: 8 · 2021: 6 · 2020: 4 · 2019: 3
FWCI
5.03
Type
journal article
Language
en
Open access
closed
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Taipei Medical University Repository (submittedVersion)
Funders
Basic Research (NSC 96-2320-B-038-009, NSC 99-2632-B-038-001-MY3)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
endometriosis, estrogen receptor beta, mitochondrial translocation, oxidative stress, apoptosis resistance, reactive oxygen species, mitochondrial bioenergetics, mitochondrial DNA, D-loop, DNA polymerase gamma, superoxide dismutase, Bcl-2, cell migration, estradiol
MeSH terms
Organelle Biogenesis, Endometriosis, Energy Metabolism, Female, Humans, Mitochondria, Apoptosis, Reactive Oxygen Species, Oxidative Stress, Protein Transport, Estrogen Receptor beta, Mitochondrial Dynamics

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