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Expression and processing of gastrin in pancreatic adenocarcinoma.

Caplin, M; Savage, K; Khan, K; Brett, B; Rode, J; Varro, A; Dhillon, A; (2000) Expression and processing of gastrin in pancreatic adenocarcinoma. Br J Surg , 87 (8) pp. 1035-1040. 10.1046/j.1365-2168.2000.01488.x.

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Abstract

BACKGROUND: Gastrin is a trophic hormone and promotes growth of gastrointestinal and non-gastrointestinal cancers. Studies both in vitro and in vivo have suggested that pancreatic cancer cells not only have the ability to respond to circulating forms of gastrin but also to respond to the autocrine production of gastrin and its precursors. The aim of this study was to identify the expression of CCK-B/gastrin receptor, progastrin, glycine-extended gastrin and amidated gastrin in both normal pancreas and pancreatic adenocarcinoma. METHODS: Tissue sections from patients with normal pancreas (n = 10) and pancreatic cancer (n = 22) were assessed using immunohistochemical methods for CCK-B/gastrin receptor, progastrin, glycine-extended gastrin and amidated gastrin expression. RESULTS: Normal pancreas showed no expression of receptor or gastrin isoforms except for occasional cells in the islets. Definite expression of CCK-B/gastrin receptor, progastrin, glycine-extended gastrin and amidated gastrin was observed in 95, 91, 55 and 23 per cent of sections from patients with pancreatic cancer respectively. CONCLUSION: Pancreatic cancer cells express CCK-B/gastrin receptor and gastrin precursor forms in most patients. Expression of the gastrin precursor forms is probably related to autocrine production. New therapeutic strategies need to be developed for the management of pancreatic cancer. Targeting gastrin and its receptor may provide a novel treatment option.

Type: Article
Title: Expression and processing of gastrin in pancreatic adenocarcinoma.
Location: England
DOI: 10.1046/j.1365-2168.2000.01488.x
Keywords: Adenocarcinoma, Gastrins, Humans, Immunohistochemistry, Neoplasm Proteins, Pancreatic Neoplasms, Receptors, Cholecystokinin
UCL classification: UCL > Office of the President and Provost
UCL > School of Life and Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Wolfson Institute and Cancer Institute Administration > Cancer Institute
URI: http://discovery.ucl.ac.uk/id/eprint/24105
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