Pathology & Oncology Research

, Volume 20, Issue 3, pp 707–717

Altered Expression of Multiple Genes Involved in Retinoic Acid Biosynthesis in Human Colorectal Cancer

  • Ekaterina S. Kropotova
  • Olga L. Zinovieva
  • Alisa F. Zyryanova
  • Vera I. Dybovaya
  • Vladimir S. Prasolov
  • Sergey F. Beresten
  • Nina Yu. Oparina
  • Tamara D. Mashkova
Research

DOI: 10.1007/s12253-014-9751-4

Cite this article as:
Kropotova, E.S., Zinovieva, O.L., Zyryanova, A.F. et al. Pathol. Oncol. Res. (2014) 20: 707. doi:10.1007/s12253-014-9751-4

Abstract

All-trans-retinoic acid (atRA), the oxidized form of vitamin A (retinol), regulates a wide variety of biological processes, such as cell proliferation and differentiation. Multiple alcohol, retinol and retinaldehyde dehydrogenases (ADHs, RDHs, RALDHs) as well as aldo-keto reductases (AKRs) catalyze atRA production. The reduced atRA biosynthesis has been observed in several human tumors, including colorectal cancer. However, subsets of atRA-synthesizing enzymes have not been determined in colorectal tumors. We investigated the expression patterns of genes involved in atRA biosynthesis in normal human colorectal tissues, primary carcinomas and cancer cell lines by RT-PCR. These genes were identified using transcriptomic data analysis (expressed sequence tags, RNA-sequencing, microarrays). Our results indicate that each step of the atRA biosynthesis pathway is dysregulated in colorectal cancer. Frequent and significant decreases in the mRNA levels of the ADH1B, ADH1C, RDHL, RDH5 and AKR1B10 genes were observed in a majority of colorectal carcinomas. The expression levels of the RALDH1 gene were reduced, and the expression levels of the cytochrome CYP26A1 gene increased. The human colon cancer cell lines showed a similar pattern of changes in the mRNA levels of these genes. A dramatic reduction in the expression of genes encoding the predominant retinol-oxidizing enzymes could impair atRA production. The most abundant of these genes, ADH1B and ADH1C, display decreased expression during progression from adenoma to early and more advanced stage of colorectal carcinomas. The diminished atRA biosynthesis may lead to alteration of cell growth and differentiation in the colon and rectum, thus contributing to the progression of colorectal cancer.

Keywords

Colorectal cancerRetinoic acid biosynthesisGene expressionTumor progression

Supplementary material

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Table S1(DOC 50 kb)
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Table S4(DOC 58 kb)

Copyright information

© Arányi Lajos Foundation 2014

Authors and Affiliations

  • Ekaterina S. Kropotova
    • 1
  • Olga L. Zinovieva
    • 1
  • Alisa F. Zyryanova
    • 1
  • Vera I. Dybovaya
    • 1
  • Vladimir S. Prasolov
    • 1
  • Sergey F. Beresten
    • 1
  • Nina Yu. Oparina
    • 1
  • Tamara D. Mashkova
    • 1
  1. 1.Engelhardt Institute of Molecular BiologyRussian Academy of SciencesMoscowRussian Federation