International Journal of Pancreatology

, Volume 4, Issue 4, pp 391–406 | Cite as

Modulation of enzymatic activities during spontaneous and induced differentiation in a human pancreatic adenocarcinoma cell line CAPAN-1

  • N. Bensaadi
  • F. Clemente
  • N. Vaysse


Different enzymatic activities were studied in the human pancreatic cancer cell line CAPAN-1 in order to analyze their relation to differentiation. Alkaline phosphatase (Alk Ph), acid phosphatase, aminopeptidase, dipeptidyl peptidase IV, acid and neutral α-glucosidases, and acid β-galactosidase were present. Especially alkaline phosphatase, which we have found to be of the placental type isoenzyme, is being highly expressed. Spontaneous cell differentiation at confluence as well as differentiating agents: sodium butyrate and DMSO, modulated the levels of three enzymes: Alk. Ph., aminopeptidase, and acid α-glucosidase. The exposure of the cells to the differentiating agents amplified the modulations occurring during the spontaneous differentiation. Aminopeptidase and acid α-glucosidase were found to be induced by differentiation. Alk Ph specific activity was significantly increased by the spontaneous and the butyrate-induced differentiations; whereas DMSO exerted an opposite effect, probably related to its biphasic action on cell proliferation.

Key Words

Differentiation pancreatic cancer enzyme modulations alkaline phosphatase aminopeptidase glycosidases 


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Copyright information

© Humana Press Inc. 1989

Authors and Affiliations

  • N. Bensaadi
    • 1
  • F. Clemente
    • 1
  • N. Vaysse
    • 1
  1. 1.Inserm U 151CHU RangueilToulouse CedexFrance

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