title: Localization of expression of fibroblast growth-factors and their receptors in pancreatic adenocarcinoma by in-situ hybridization.
abstract: Growth factors may play a role in autocrine or paracrine growth control of tumour cells. We have now examined the expression pattern in vivo by in situ hybridization (ISH) on a series of 13 ductal adenocarcinomas of the pancreas using the non-radioactive digoxigenin system to generate specific antisense orientated riboprobes for FGF-1 and FGF-2, and the four FGFRs (FGFR-1, -2, -3 and -4). We confirmed the expression of both FGF/FGFR by tumour cells, with the potential of a potential autocrine loops in 46% of the cases studied. FGF-2 and FGFR-3 were the most commonly expressed ligand and receptor (46% and 76% respectively). Endothelial cells lining vessels within an around invasive tumours were frequently positive for expression of FGFR-1 and/or FGFR-3. In the normal pancreas remote from the tumour, the acinar cells were found to have a heterogeneous expression pattern for FGFRs while duct cells, islet cells and stromal components including nerves and vascular endothelium were negative. The data suggest a role for FGFs and their high affinity receptors in the control of growth of human pancreatic adenocarcinoma and its supporting stroma.
authors.affiliation: HAMMERSMITH HOSP,ROYAL POSTGRAD MED SCH,ICRF ONCOL UNIT,LONDON W12 0NN,ENGLAND. ACAD HOSP JETTE,DEPT PATHOL,B-1090 BRUSSELS,BELGIUM. HAMMERSMITH HOSP,ROYAL POSTGRAD MED SCH,DEPT SURG,LONDON W12 0NN,ENGLAND.
authors.forename: H
authors.initials: H
authors.lastname: Leung
authors.forename: C
authors.initials: C
authors.lastname: Hughes
authors.forename: G
authors.initials: G
authors.lastname: Kloppel
authors.forename: R
authors.initials: R
authors.lastname: Williamson
authors.forename: N
authors.initials: N
authors.lastname: Lemoine