期刊
INTERNATIONAL JOURNAL OF TRYPTOPHAN RESEARCH
卷 13, 期 -, 页码 -出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1178646920977013
关键词
Tryptophan metabolism; cancers; TCGA; differentially expressed gene; gene pair correlation
资金
- Tour de Cure Foundation
- National Health and Medical Research Council (NHMRC)
- Macquarie University
Tryptophan metabolism plays essential roles in both immunomodulation and cancer development. Indoleamine 2,3-dioxygenase, a rate-limiting enzyme in the metabolic pathway, is overexpressed in different types of cancer. To get a better understanding of the involvement of tryptophan metabolism in cancer development, we evaluated the expression and pairwise correlation of 62 genes in the metabolic pathway across 12 types of cancer. Only gene AOX1, encoding aldehyde oxidase 1, was ubiquitously downregulated, Furthermore, we observed that the 62 genes were widely and strongly correlated in normal controls, however, the gene pair correlations were significantly lost in tumor patients for all 12 types of cancer. This implicated that gene pair correlation coefficients of the tryptophan metabolic pathway could be applied as a prognostic and/or diagnostic biomarker for cancer.
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