Cited by 66Interstitial Lung Diseases and Idiopathic Pulmonary FibrosisMicroRNA in disease regulationPulmonary Hypertension Research and Treatments

miR-34a promotes fibrosis in aged lungs by inducing alveolarepithelial dysfunctions

Open access
Cui, Huachun, Ge, Jing, Xie, Na, Banerjee, Sami, Zhou, Yong, Liu, Rui-Ming, Thannickal, Victor J., Liu, Gang·2017·American Journal of Physiology-Lung Cellular and Molecular Physiology

Abstract

Idiopathic pulmonary fibrosis is a well-known age-related disease. However, much less recognized has been the aging associated pathogenesis of this disorder. As we and others previously showed that dysregulation of micro-RNAs (miRNAs) was an important mechanism involved in pulmonary fibrosis, the role of these molecules in this pathology in the aged population has not been investigated (Cushing L, Kuang PP, Qian J, Shao F, Wu J, Little F, Thannickal VJ, Cardoso WV, Lü J. Am J Respir Cell Mol Biol 45: 287–294, 2011; Liu G, Friggeri A, Yang Y, Milosevic J, Ding Q, Thannickal VJ, Kaminski N, Abraham E. J Exp Med 207: 1589–1597, 2010; Pandit KV, Corcoran D, Yousef H, Yarlagadda M, Tzouvelekis A, Gibson KF, Konishi K, Yousem SA, Singh M, Handley D, Richards T, Selman M, Watkins SC, Pardo A, Ben-Yehudah A, Bouros D, Eickelberg O, Ray P, Benos PV, Kaminski N. Am J Respir Crit Care Med 182: 220–229, 2010). In this study, by using a lung fibrosis model established in old mice, we found that ablation of miR-34a protected aged animals from developing experimental lung fibrosis. miR-34a was upregulated in lung epithelial cells, but not in lung fibroblasts of aged mice, and miR-34a expression was further increased in epithelial cells of the fibrotic lungs of these old animals. We found that miR-34a induced dysfunctions in alveolar epithelial cells (AECs), as evidenced by increased cellular senescence and apoptosis and mitochondrial aberrations. More importantly, these abnormalities were attenuated in AECs of the fibrotic lungs of aged miR-34a−/− mice. We found that miR-34a targeted Sirt1, a master anti-aging regulator, and two key cell cycle modulators, E2F3 and cyclin E2, in lung epithelial cells, and the repression of these targets was relieved in miR-34a-deficient AECs. In summary, our data suggest that elevated AEC miR-34a plays a critical role in the pathogenesis of pulmonary fibrosis in the aged population. Our study also indicates miR-34a to be a more precise miRNA target for treating this disease that overwhelmingly affects people of advanced age.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1152/ajplung.00335.2016

Cites

47 of 47 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Cui, H., Ge, J., Xie, N., Banerjee, S., Zhou, Y., Liu, R.-M., Thannickal, V. J., & Liu, G.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Liu, Gang
Venue
American Journal of Physiology-Lung Cellular and Molecular Physiology
Published
2017-03-01
Volume
312
Issue
3
Pages
L415-L424
ISSN
  • 1040-0605 (ISSN-L)
  • 1522-1504
OpenAlex
W2564479815
Cited by
66
References
47
Citations by year
2026: 5 · 2025: 5 · 2024: 5 · 2023: 5 · 2022: 9 · 2021: 6 · 2020: 12 · 2019: 8 · 2018: 7 · 2017: 4
FWCI
5.66
Type
journal article
Language
en
Open access
Locations
  • American Journal of Physiology-Lung Cellular and Molecular Physiology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
HHS | NIH | National Heart, Lung, and Blood Institute (NHBLI) (HL105473, HL126737, HL114470)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Pulmonary Hypertension Research and Treatments
Keywords
idiopathic pulmonary fibrosis, lung aging, alveolar epithelial cells, cellular senescence, apoptosis, mitochondrial dysfunction, SIRT1, E2F3, cyclin E2, age-related diseases, cell cycle regulation
MeSH terms
Aging, Animals, Bleomycin, Cell Line, Fibroblasts, Humans, Mitochondria, Phenotype, Up-Regulation, Cellular Senescence, Apoptosis, MicroRNAs, Cell Proliferation, Mice, Idiopathic Pulmonary Fibrosis, Alveolar Epithelial Cells

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review