Stat3 downstream genes serve as biomarkers in human lung carcinomas and chronic obstructive pulmonary disease

Peng Qu, Jennifer Roberts, Yuan Li, Marjorie Albrecht, Oscar W. Cummings, John N. Eble, Hong Du, Cong Yan

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Smoking causes lung cancer and chronic obstructive pulmonary disease (COPD) that impose severe health problem to humans. Both diseases are related to each other and can be induced by chronic inflammation in the lung. To identify the molecular mechanism for lung cancer formation, a CCSP-rtTA/(teto)7Stat3C bitransgenic model was generated recently. In this model, persistent activation of the Stat3 signaling pathway induced pulmonary inflammation and adenocarcinoma formation in the lung. A group of Stat3 downstream genes were identified by Affymetrix GeneChip microarray analysis that can be used as biomarkers for lung cancer diagnosis and prognosis. To determine which human lung cancers are related to the Stat3 pathway, multiple Stat3 downstream genes were screened in human lung cancers (adenocarcinomas and squamous cell carcinomas) and lung tissue with COPD. In both cancer and COPD, the Stat3 gene was up-regulated. A panel of Stat3-up-regulated downstream genes in mice was up-regulated in human adenocarcinomas, but not in human squamous cell carcinomas. This panel of genes was also modestly up-regulated in lung tissue with COPD from patients with a history of smoking and not up-regulated in those without histories of smoking. Several Stat3-down-regulated downstream genes also showed differential expression patterns in carcinoma and COPD. These studies support a concept that Stat3 is a potent oncogenic molecule that plays a role in formation of lung adenocarcinomas in both mice and humans. The carcinogenesis of adenocarcinoma and squamous cell carcinoma is mediated by different molecular mechanisms and pathways in vivo. Stat3 and its downstream genes can serve as biomarkers for lung adenocarcinoma and COPD diagnosis and prognosis in mice and humans.

Original languageEnglish (US)
Pages (from-to)341-347
Number of pages7
JournalLung Cancer
Volume63
Issue number3
DOIs
StatePublished - Mar 1 2009

Fingerprint

Chronic Obstructive Pulmonary Disease
Biomarkers
Carcinoma
Lung
Lung Neoplasms
Genes
Squamous Cell Carcinoma
Smoking
Pneumonia
Adenocarcinoma
Microarray Analysis
Carcinogenesis
Adenocarcinoma of lung
Health
Neoplasms

Keywords

  • Adenocarcinoma
  • Biomarkers
  • COPD
  • Real-Time qRT-PCR
  • Squamous cell carcinoma
  • Stat3

ASJC Scopus subject areas

  • Oncology
  • Pulmonary and Respiratory Medicine
  • Cancer Research

Cite this

Stat3 downstream genes serve as biomarkers in human lung carcinomas and chronic obstructive pulmonary disease. / Qu, Peng; Roberts, Jennifer; Li, Yuan; Albrecht, Marjorie; Cummings, Oscar W.; Eble, John N.; Du, Hong; Yan, Cong.

In: Lung Cancer, Vol. 63, No. 3, 01.03.2009, p. 341-347.

Research output: Contribution to journalArticle

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