Cited by 199Ferroptosis and cancer prognosisGenomics, phytochemicals, and oxidative stressIron Metabolism and Disorders

Nrf2 attenuates ferroptosis-mediated IIR-ALI by modulating TERT and SLC7A11

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Dong, Hui, Xia, Yangyang, Jin, Shanliang, Xue, Chaofan, Wang, Yanjun, Hu, Rong, Jiang, Hong·2021·Cell Death & Disease

Abstract

Acute lung injury (ALI) carries a mortality rate of ~50% and is a hot topic in the world of critical illness research. Nuclear factor erythroid 2-related factor 2 (Nrf2) is a critical modulator of intracellular oxidative homeostasis and serves as an antioxidant. The Nrf2-related anti-oxidative stress is strongly associated with ferroptosis suppression. Meanwhile, telomerase reverse transcriptase (TERT), the catalytic portion of the telomerase protein, is reported to travel to the mitochondria to alleviate ROS. In our study, we found that TERT was significantly reduced in lung tissue of Nrf2 −/− mice in the model of intestinal ischemia/reperfusion-induced acute lung injury (IIR-ALI). In addition, MDA levels showed marked increase, whereas GSH and GPX4 levels fell drastically in ALI models. Moreover, typical-related structural changes were observed in the type II alveolar epithelial cells in the IIR model. We further employed the scanning transmission X-ray microscopy (STXM) to examine Fe levels and distribution within cells. Based on our observations, massive aggregates of Fe were found in the MLE-12 cells upon OGD/R (oxygen and glucose deprivation/reperfusion) induction. Additionally, Nrf2 silencing dramatically reduced TERT and SLC7A11 levels, and further exacerbated cellular injuries. In contrast, TERT-overexpressing cells exhibited marked elevation in SLC7A11 levels and thereby inhibited ferroptosis. Collectively, these data suggest that Nrf2 can negatively regulate ferroptosis via modulation of TERT and SLC7A11 levels. The conclusion from this study brings insight into new candidates that can be targeted in future IIR-ALI therapy.

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  • All ApoE isoforms increased the expression of known NRF2 target genes including SLC7A11, AKR1C1, and FTH1.

    “and increased the expression of known target genes of this transcription factor including SLC7A11, AKR1C1, and FTH1 (fig. S5S) (41–45).”

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Authors
Dong, H., Xia, Y., Jin, S., Xue, C., Wang, Y., Hu, R., & Jiang, H.
Affiliations
  • Shanghai Jiao Tong University (CN)
  • Chinese Academy of Sciences (CN)
Corresponding author
  • Hu, Rong
  • Jiang, Hong
Venue
Cell Death & Disease
Published
2021-10-29
Volume
12
Issue
11
Pages
1027-1027
ISSN
2041-4889 (ISSN-L)
OpenAlex
W3209906264
Cited by
196
References
35
Citations by year
2026: 29 · 2025: 40 · 2024: 65 · 2023: 36 · 2022: 26
FWCI
21.10
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Disease (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Science and Technology Commission of Shanghai Municipality (19ZR1476500)
  • National Natural Science Foundation of China (81970065)
  • Youth Innovation Promotion Association of the Chinese Academy of Sciences (2017306)
  • the Incentive Project of High-level Innovation Team for Shanghai Jiao Tong University School of Medicine
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Ferroptosis and cancer prognosis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics, phytochemicals, and oxidative stress
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
Keywords
Nrf2, ferroptosis, telomerase reverse transcriptase, SLC7A11, telomerase, oxidative stress, iron accumulation, GPX4, glutathione, alveolar epithelial cells, Nrf2 knockout mice
MeSH terms
Ferroptosis, Animals, Cell Line, Transformed, Disease Models, Animal, Glucose, Intestines, Iron, Mice, Inbred C57BL, Oxygen, Signal Transduction, Reperfusion Injury, Mice, Knockout, Telomerase, Gene Silencing, Amino Acid Transport System y+, NF-E2-Related Factor 2, Mice, Acute Lung Injury, Alveolar Epithelial Cells

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