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Comparative proteomics and global genome-wide expression data implicate role of ARMC8 in lung cancer

  • Amin, Asif (Department of Biotechnology, University of Kashmir) ;
  • Bukhari, Shoiab (Department of Biotechnology, University of Kashmir) ;
  • Mokhdomi, Taseem A (Department of Biotechnology, University of Kashmir) ;
  • Anjum, Naveed (Department of Biotechnology, University of Kashmir) ;
  • Wafai, Asrar H (Department of Biotechnology, University of Kashmir) ;
  • Wani, Zubair (Department of Biotechnology, University of Kashmir) ;
  • Manzoor, Saima (Department of Biotechnology, University of Kashmir) ;
  • Koul, Aabid M (Department of Biotechnology, University of Kashmir) ;
  • Amin, Basit (Department of Biotechnology, University of Kashmir) ;
  • Qurat-ul-Ain, Qurat-ul-Ain (Department of Biotechnology, University of Kashmir) ;
  • Qazi, Hilal (Centre of Research for Development, University of Kashmir) ;
  • Tyub, Sumira (Centre of Research for Development, University of Kashmir) ;
  • Lone, Ghulam Nabi (Department of Cardiovascular and Thoracic Surgery, Sher-i-Kashmir Institute of Medical Sciences) ;
  • Qadri, Raies A (Department of Biotechnology, University of Kashmir)
  • Published : 2015.05.18

Abstract

Background: Cancer loci comprise heterogeneous cell populations with diverse cellular secretions. Therefore, disseminating cancer-specific or cancer-associated protein antigens from tissue lysates could only be marginally correct, if otherwise not validated against precise standards. Materials and Methods: In this study, 2DE proteomic profiles were examined from lysates of 13 lung-adenocarcinoma tissue samples and matched against the A549 cell line proteome. A549 matched-cancer-specific hits were analyzed and characterized by MALDI-TOF/MS. Results: Comparative analysis identified a total of 13 protein spots with differential expression. These proteins were found to be involved in critical cellular functions regulating pyrimidine metabolism, pentose phosphate pathway and integrin signaling. Gene ontology based analysis classified majority of protein hits responsible for metabolic processes. Among these, only a single non-predictive protein spot was found to be a cancer cell specific hit, identified as Armadillo repeat-containing protein 8 (ARMC8). Pathway reconstruction studies showed that ARMC8 lies at the centre of cancer metabolic pathways. Conclusions: The findings in this report are suggestive of a regulatory role of ARMC8 in control of proliferation and differentiation in lung adenocarcinomas.

Keywords

Lung adenocarcinoma;ARMC8;MALDI-TOF/MS

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