Integrative analysis of cancer pathway progression and coherence

Ertugrul Dalkic, Daniel Elwin Walter Nash, Mohammad Kasim Fassia, Christina Chan

Research output: Contribution to journalArticle

Abstract

We analyzed the cancer pathways in the KEGG (Kyoto Encyclopedia of Genes and Genomes) database. The database provides a collective of signaling pathway members involved in cancer progression. However, the KEGG cancer pathways, unlike signaling pathways, have not been analyzed extensively with gene expression and mutation data. We transformed the colorectal cancer pathway into discrete X and Y scales and analyzed the relative expression levels of adenoma and carcinoma samples as well as the distribution of mutation targets. The X scale corresponds to the downstream location in a pathway, whereas the Y scale corresponds to the stage of the tumor. The gene expression values of the early stage pathway members are significantly higher than of the rest of the pathway members in colorectal adenoma tissues. The colorectal cancer pathway shows some degree of coherence in the carcinoma samples. The correlated gene pairs responsible for the coherence of the colorectal cancer pathway in the carcinoma samples are supported, in part, by the literature and may suggest novel regulatory associations. Finally, there are more mutation targets in the nucleus as well as the late tumor stages of the KEGG colorectal cancer pathway.

LanguageEnglish (US)
Pages473-485
Number of pages13
JournalProteomics - Clinical Applications
Volume3
Issue number4
DOIs
StatePublished - 2009

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Encyclopedias
Colorectal Neoplasms
Genes
Genome
Carcinoma
Adenoma
Mutation
Neoplasms
Databases
Gene Expression
Neoplasm Genes
Gene expression
Tumors
Tissue

Keywords

  • Biological pathways
  • Cancer
  • Systems biology

ASJC Scopus subject areas

  • Clinical Biochemistry

Cite this

Integrative analysis of cancer pathway progression and coherence. / Dalkic, Ertugrul; Walter Nash, Daniel Elwin; Fassia, Mohammad Kasim; Chan, Christina.

In: Proteomics - Clinical Applications, Vol. 3, No. 4, 2009, p. 473-485.

Research output: Contribution to journalArticle

Dalkic, Ertugrul ; Walter Nash, Daniel Elwin ; Fassia, Mohammad Kasim ; Chan, Christina. / Integrative analysis of cancer pathway progression and coherence. In: Proteomics - Clinical Applications. 2009 ; Vol. 3, No. 4. pp. 473-485
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