Effect of differentiation agents on expression of CA 125, alkaline phosphatase, and cytokeratins in human ovarian adenocarcinoma cells (OVCA 433).

Abstract:

:A number of chemical agents have been found to influence the proliferation, morphology, enzymatic activity, and antigen expression of neoplastic cells toward a more differentiated phenotype. We studied the effects of differentiating agents retinoic acid, sodium butyrate, and dibutyryl cyclic AMP on the expression of the tumor-associated antigen CA 125 and several biochemical markers of differentiation in cultured OVCA 433 ovarian cancer cells. Treatment of OVCA 433 cells with these agents for 96 hr reduced cellular proliferation and altered cellular morphology. Quantitation of cell surface CA 125 using flow cytometry revealed that CA 125 expression was reduced by 35-50%. The amount of CA 125 antigen shed into the culture media was reduced to a similar degree. In addition, differentiation inducers markedly enhanced cellular alkaline phosphatase activity and induced the expression of a 65-67-kDa cytokeratin. These findings provide support for the induction of a more differentiated phenotype by these agents.

journal_name

Gynecol Oncol

journal_title

Gynecologic oncology

authors

Brooks SE,Timmerman J,Lau CC,Tsao SW,Knapp RC,Sheets EE

doi

10.1016/0090-8258(91)90356-a

subject

Has Abstract

pub_date

1991-09-01 00:00:00

pages

265-72

issue

3

eissn

0090-8258

issn

1095-6859

journal_volume

42

pub_type

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