3p microsatellite signature in exhaled breath condensate and tumor tissue of patients with lung cancer

Giovanna Elisiana Carpagnano, Maria Pia Foschino-Barbaro, Antonio Spanevello, Onofrio Resta, Francesco Carpagnano, Giuseppina Mulé, Rosamaria Pinto, Stefania Tommasi, Angelo Paradiso

Research output: Contribution to journalArticle

Abstract

Rationale: Our group has recently demonstrated the possibility of studying microsatellite alterations (MAs) of 3p in the DNA of exhaled breath condensate (EBC) of patients with non-small cell lung cancer (NSCLC). Objectives: To verify whether MAs analyzed in DNA from EBC reflect a profile of alterations present in tumor tissue of NSCLC. Methods: Fifty-nine subjects undergoing histologic diagnosis for clinical suspicion of lung cancer entered the study: 41 were found to have NSCLC and 18 to have nonneoplastic diseases. All subjects underwent allelotyping on DNA from whole blood, EBC, and lung tissue removed for histologic diagnosis by analyzing a panel of five microsatellites located in chromosomal region 3p. Results obtained from DNA of the three biological sites and nonneoplastic tissues from controls were compared. Measurements and Main Results: MAs in DNA from tumor tissues and EBC of each patient with cancer presented an overlapping profile of loss of heterozygosity and microsatellite instability. An MA profile of DNA of lung tissue reflecting the DNA of EBC profile from controls was also confirmed. Smoking status was associated with the presence of MAs in patients with NSCLC and in control subjects. Conclusions: We demonstrated that MAs in DNA from EBC of patients with NSCLC are significantly more frequent than in control subjects. More interesting, the MA profile of DNA from EBC corresponds to that from lung cancer tissue of each patient with NSCLC.

Original languageEnglish
Pages (from-to)337-341
Number of pages5
JournalAmerican Journal of Respiratory and Critical Care Medicine
Volume177
Issue number3
DOIs
Publication statusPublished - Feb 1 2008

Keywords

  • DNA
  • Exhaled breath condensate
  • Lung tissue
  • Non-small cell lung cancer

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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