Absence of K-ras mutations in the pancreatic parenchyma of patients with chronic pancreatitis

David Hsiang, Helmut Friess, Markus W. Büchler, Matthias Ebert, John Butler, Murray Korc

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

BACKGROUND: Human pancreatic cancers exhibit a high frequency of K-ras mutations. METHODS: In this study we used oligonucleotide specific hybridization to compare the frequency of K-res mutations in genomic DNA samples prepared from 21 normal pancreatic tissues, 26 chronic pancreatitis tissues, and 24 pancreatic cancers. RESULTS: None of the DNA samples from normal or chronic pancreatitis tissues exhibited a K-ras mutation at codons 12 or 13 of K-res. In contrast, 17 of 24 DNA pancreatic cancers harbored a K- ras mutation. Validity of the methodology was confirmed by genotyping 7 human pancreatic cancer cell lines. Analysis of focal areas of proliferation from 5 chronic pancreatitis and 5 pancreatic cancer samples processed by selective ultraviolet radiation fractionation (SURF), a procedure used to enrich DNA isolation from foci of proliferating cells, revealed complete concordance with total genomic DNA analysis. CONCLUSIONS: These findings indicate that the pancreatic parenchyma in patients with chronic pancreatitis most frequently does not possess a K-ras mutation.

Original languageEnglish (US)
Pages (from-to)242-246
Number of pages5
JournalAmerican Journal of Surgery
Volume174
Issue number3
DOIs
StatePublished - Sep 1997
Externally publishedYes

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Chronic Pancreatitis
Pancreatic Neoplasms
Mutation
DNA
Codon
Oligonucleotides
Radiation
Cell Line

ASJC Scopus subject areas

  • Surgery

Cite this

Absence of K-ras mutations in the pancreatic parenchyma of patients with chronic pancreatitis. / Hsiang, David; Friess, Helmut; Büchler, Markus W.; Ebert, Matthias; Butler, John; Korc, Murray.

In: American Journal of Surgery, Vol. 174, No. 3, 09.1997, p. 242-246.

Research output: Contribution to journalArticle

Hsiang, David ; Friess, Helmut ; Büchler, Markus W. ; Ebert, Matthias ; Butler, John ; Korc, Murray. / Absence of K-ras mutations in the pancreatic parenchyma of patients with chronic pancreatitis. In: American Journal of Surgery. 1997 ; Vol. 174, No. 3. pp. 242-246.
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