Mechanism of apoptosis induced by cisplatin and VP-16 in PANC-1 cells

Anticancer Res. 1997 Sep-Oct;17(5A):3445-50.

Abstract

Cisplatin and VP-16 were used to study the induction of apoptosis in Panc-1 cells. Cisplatin and VP-16 inhibited the growth of Panc-1 cells. After 2 hours exposure to cisplatin or VP-16, attached and detached cells were subjected to TUNEL staining to calculate the ratio of apoptosis. In detached cells TUNEL positive ratios increased in a time- and dose-dependent manner. In Western blotting, Bax expression was obviously up-regulated, but Bcl-2 remained almost constant. The results suggested that in Panc-1 cells cisplatin and VP-16 induced apoptotic cell death which was mediated through the interaction of Bax expression in the presence of mutated p53.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / pharmacology
  • Apoptosis / drug effects*
  • Cell Adhesion / drug effects
  • Cisplatin / pharmacology*
  • DNA Fragmentation
  • Dose-Response Relationship, Drug
  • Etoposide / pharmacology*
  • Genes, p53
  • Growth Inhibitors / pharmacology
  • Humans
  • Pancreatic Neoplasms
  • Proto-Oncogene Proteins / metabolism
  • Proto-Oncogene Proteins c-bcl-2 / metabolism
  • Tumor Cells, Cultured
  • bcl-2-Associated X Protein

Substances

  • Antineoplastic Agents
  • BAX protein, human
  • Growth Inhibitors
  • Proto-Oncogene Proteins
  • Proto-Oncogene Proteins c-bcl-2
  • bcl-2-Associated X Protein
  • Etoposide
  • Cisplatin