Cigarette smoke induces mitochondrial metabolic reprogramming in lung cells

Hitendra S. Solanki, Niraj Babu, Ankit P. Jain, Mohd Younis Bhat, Vinuth N. Puttamallesh, Jayshree Advani, Remya Raja, Kiran K. Mangalaparthi, Mahesh M. Kumar, T. S.Keshava Prasad, Premendu Prakash Mathur, David Sidransky, Harsha Gowda, Aditi Chatterjee

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Cellular transformation owing to cigarette smoking is due to chronic exposure and not acute. However, systematic studies to understand the molecular alterations in lung cells due to cigarette smoke are lacking. To understand these molecular alterations induced by chronic cigarette smoke exposure, we carried out tandem mass tag (TMT) based temporal proteomic profiling of lung cells exposed to cigarette smoke for upto 12 months. We identified 2620 proteins in total, of which 671 proteins were differentially expressed (1.5-fold) after 12 months of exposure. Prolonged exposure of lung cells to smoke for 12 months revealed dysregulation of oxidative phosphorylation and overexpression of enzymes involved in TCA cycle. In addition, we also observed overexpression of enzymes involved in glutamine metabolism, fatty acid degradation and lactate synthesis. This could possibly explain the availability of alternative source of carbon to TCA cycle apart from glycolytic pyruvate. Our data indicates that chronic exposure to cigarette smoke induces mitochondrial metabolic reprogramming in cells to support growth and survival.

Original languageEnglish (US)
Pages (from-to)58-70
Number of pages13
JournalMitochondrion
Volume40
DOIs
StatePublished - May 2018

Keywords

  • Cigarette smoking
  • Mass spectrometry
  • Metabolism
  • NSCLC

ASJC Scopus subject areas

  • Molecular Medicine
  • Molecular Biology
  • Cell Biology

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