Evidence map›Paper›PMID 18830406›Full record

ArticlePloS one2008

Egr-1 regulates autophagy in cigarette smoke-induced chronic obstructive pulmonary disease.

Zhi-Hua Chen, Hong Pyo Kim, Frank C Sciurba, Seon-Jin Lee, Carol Feghali-Bostwick, Donna B Stolz, Rajiv Dhir, Rodney J Landreneau, Mathew J Schuchert, Samuel A Yousem and 6 more

Abstract read
In one paragraph

Article in PloS one, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 262 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
262citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

262 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Guideline
  4. Article
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  6. Mechanisms and markers of lung ageing in health and disease.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  7. Article
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  9. Mitochondrial DNA signals driving immune responses: Why, How, Where?Cell communication and signaling : CCS · 2025
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202 more citing papers are in PubMed but not listed here.

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

16 authors.

Zhi-Hua ChenDivision of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Hong Pyo Kim
Frank C Sciurba
Seon-Jin Lee
Carol Feghali-Bostwick
Donna B Stolz
Rajiv Dhir
Rodney J Landreneau
Mathew J Schuchert
Samuel A Yousem
Kiichi Nakahira
Joseph M Pilewski
Janet S Lee
Yingze Zhang
Stefan W Ryter
Augustine M K Choi

Funding

University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
Peripheral Markers of Phenotypic Heterogeneity in COPDP50HL084948 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HOGG, JAMES C · 2007 to 2012
$12.8M
NITRIC OXIDE AND METALLOTIONEIMP01HL070807 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI RYTER, STEFAN W · 2003 to 2007
$8.1M
The Role of HEME Oxygenase in Hyperoxic Lung InjuryR01HL055330 · NHLBI · YALE UNIVERSITY · PI CHOI, AUGUSTINE M, CHOI, MARY E · 1998 to 2021
$6.6M
HEME OXYGENASE 1--LUNG VASCULAR CELL HYPOXIC RESPONSER01HL060234 · NHLBI · YALE UNIVERSITY · PI CHOI, AUGUSTINE M, CHOI, MARY E · 1999 to 2017
$5.8M
Heme oxygenase-1: Regulation and Function in CaveolaeR01HL079904 · NHLBI · WEILL MEDICAL COLL OF CORNELL UNIV · PI CHOI, MARY E · 2005 to 2014
$2.9M
NCATS NIH HHS UL1 TR000005NHLBI NIH HHS 1 P50HL084948NHLBI NIH HHS P01 HL070807NHLBI NIH HHS P01-HL70807NHLBI NIH HHS P50 HL084948NHLBI NIH HHS R01 HL055330NHLBI NIH HHS R01 HL060234NHLBI NIH HHS R01 HL079904NHLBI NIH HHS R01-HL079904NHLBI NIH HHS R01-HL55330NHLBI NIH HHS R01-HL60234
6 · The paper itself

Abstract

backgroundChronic obstructive pulmonary disease (COPD) is a progressive lung disease characterized by abnormal cellular responses to cigarette smoke, resulting in tissue destruction and airflow limitation. Autophagy is a degradative process involving lysosomal turnover of cellular components, though its role in human diseases remains unclear. METHODOLOGY AND PRINCIPAL

findingsIncreased autophagy was observed in lung tissue from COPD patients, as indicated by electron microscopic analysis, as well as by increased activation of autophagic proteins (microtubule-associated protein-1 light chain-3B, LC3B, Atg4, Atg5/12, Atg7). Cigarette smoke extract (CSE) is an established model for studying the effects of cigarette smoke exposure in vitro. In human pulmonary epithelial cells, exposure to CSE or histone deacetylase (HDAC) inhibitor rapidly induced autophagy. CSE decreased HDAC activity, resulting in increased binding of early growth response-1 (Egr-1) and E2F factors to the autophagy gene LC3B promoter, and increased LC3B expression. Knockdown of E2F-4 or Egr-1 inhibited CSE-induced LC3B expression. Knockdown of Egr-1 also inhibited the expression of Atg4B, a critical factor for LC3B conversion. Inhibition of autophagy by LC3B-knockdown protected epithelial cells from CSE-induced apoptosis. Egr-1(-/-) mice, which displayed basal airspace enlargement, resisted cigarette-smoke induced autophagy, apoptosis, and emphysema.

conclusionsWe demonstrate a critical role for Egr-1 in promoting autophagy and apoptosis in response to cigarette smoke exposure in vitro and in vivo. The induction of autophagy at early stages of COPD progression suggests novel therapeutic targets for the treatment of cigarette smoke induced lung injury.

Indexed as

NicotianaSmokingAnimalsApoptosisAutophagyEarly Growth Response Protein 1HumansMiceMice, Inbred C57BLPulmonary Disease, Chronic ObstructiveEarly Growth Response Protein 1EGR1 protein, human

Identifiers

PMID18830406
PMCPMC2552992

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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.