Phosphoglycerate kinase 1 as a promoter of metastasis in colon cancer.

Abstract:

:Oxidative stress due to intratumoral hypoxia in solid cancer has been shown to be associated with increased mortality. Phosphoglycerate kinase 1 (PGK1) is an enzyme of the glycolytic pathway, which is regulated by hypoxia-inducible factor-1α (HIF-1α) and has been described for its role in tumor progression and metastasis in several malignancies. We investigated whether the expression of PGK1 varies between metastatic and non-metastatic colon cancer. We compared PGK1 expression in colon cancer patients either with or without metastasis via polymerase chain reaction (PCR) and immunohistochemistry. Microarray analysis was performed to test altered gene expression after PGK1 silencing, using isolates from HCT116 cell lines. PCR results showed an increased expression of PGK1 in colon cancer tissue from metastatic patients in comparison to patients with no metastasis (fold change 2.6, p<0.001). Immunohistochemical staining of PGK1 showed stronger staining in metastatic tissue in comparison to non-metastatic cancer tissue according to a semi-quantitative evaluation. Microarray and subsequent pathway analysis provided 4 genes of interest (CYR61, FOS, JUN and EGR1) used for pathway proposal. The results indicate that increased expression of PGK1 in colon cancer tissue is associated with metastasis. Furthermore, we propose several genes induced by PGK1 that could account for cell migration, mainly EGR1 and CYR61 together with the transcription factors FOS and JUN.

journal_name

Int J Oncol

authors

Ahmad SS,Glatzle J,Bajaeifer K,Bühler S,Lehmann T,Königsrainer I,Vollmer JP,Sipos B,Ahmad SS,Northoff H,Königsrainer A,Zieker D

doi

10.3892/ijo.2013.1971

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

586-90

issue

2

eissn

1019-6439

issn

1791-2423

journal_volume

43

pub_type

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