Expression of the proteolysis-inducing factor core peptide mRNA is upregulated in both tumour and adjacent normal tissue in gastro-oesophageal malignancy

D.A.C. Deans, S.J. Wigmore, H. Gilmour, Michael J. Tisdale, Kenneth C.H. Fearon, J.A. Ross

Research output: Contribution to journalArticle

Abstract

Gastro-oesophageal cancer is associated with a high incidence of cachexia. Proteolysis-inducing factor (PIF) has been identified as a possible cachectic factor and studies suggest that PIF is produced exclusively by tumour cells. We investigated PIF core peptide (PIF-CP) mRNA expression in tumour and benign tissue from patients with gastro-oesophageal cancer and in gastro-oesophageal biopsies for healthy volunteers. Tumour tissue and adjacent benign tissue were collected from patients with gastric and oesophageal cancer (n = 46) and from benign tissue only in healthy controls (n = 11). Expression of PIF-CP mRNA was quantified by real-time PCR. Clinical and pathological information along with nutritional status was collected prospectively. In the cancer patients, PIF-CP mRNA was detected in 27 (59%) tumour samples and 31 (67%) adjacent benign tissue samples. Four (36%) gastro-oesophageal biopsies from healthy controls also expressed PIF-CP mRNA. Expression was higher in tumour tissue (P = 0.031) and benign tissue (P = 0.022) from cancer patients compared with healthy controls. In the cancer patients, tumour and adjacent benign tissue PIF-CP mRNA concentrations were correlated with each other (P<0.0001, r = 0.73) but did not correlate with weight loss or prognosis. Although PIF-CP mRNA expression is upregulated in both tumour and adjacent normal tissue in gastro-oesophageal malignancy, expression does not relate to prognosis or cachexia. Post-translational modification of PIF may be a key step in determining the biological role of PIF in the patient with advanced cancer and cachexia. © 2006 Cancer Research.

Original languageEnglish
Pages (from-to)731-736
Number of pages6
JournalBritish Journal of Cancer
Volume94
Issue number5
DOIs
Publication statusPublished - 13 Mar 2006

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Proteolysis
Messenger RNA
Peptides
Neoplasms
Cachexia
Esophageal Neoplasms
Biopsy
Post Translational Protein Processing
Nutritional Status
Stomach Neoplasms
Weight Loss
Real-Time Polymerase Chain Reaction
Healthy Volunteers

Bibliographical note

Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

Keywords

  • cachexia
  • inflammation
  • prognosis
  • real-time PCR

Cite this

Deans, D.A.C. ; Wigmore, S.J. ; Gilmour, H. ; Tisdale, Michael J. ; Fearon, Kenneth C.H. ; Ross, J.A. / Expression of the proteolysis-inducing factor core peptide mRNA is upregulated in both tumour and adjacent normal tissue in gastro-oesophageal malignancy. In: British Journal of Cancer. 2006 ; Vol. 94, No. 5. pp. 731-736.
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Expression of the proteolysis-inducing factor core peptide mRNA is upregulated in both tumour and adjacent normal tissue in gastro-oesophageal malignancy. / Deans, D.A.C.; Wigmore, S.J.; Gilmour, H.; Tisdale, Michael J.; Fearon, Kenneth C.H.; Ross, J.A.

In: British Journal of Cancer, Vol. 94, No. 5, 13.03.2006, p. 731-736.

Research output: Contribution to journalArticle

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