The effect of interferon gamma on epidermal growth factor receptor expression in normal and malignant ovarian epithelial cells.

Abstract:

OBJECTIVE:We examined the effect of interferon gamma on proliferation and epidermal growth factor receptor expression in ovarian cancer cell lines and normal ovarian epithelial cells. STUDY DESIGN:The tritiated thymidine incorporation assay was used to assess the effect of interferon gamma on proliferation. Scatchard analysis of anti-epidermal growth factor receptor antibody binding, and Western blotting of immunoprecipitates was used to assess the effect of interferon gamma on epidermal growth factor receptor expression. RESULTS:Although interferon gamma elicited 30% to 40% decreases in proliferation, epidermal growth factor receptor expression was strikingly increased in all four ovarian cancer cell lines. Scatchard analysis indicated that this increase occurred primarily at the cell surface, but total cellular receptor levels also were increased. In contrast, interferon gamma treatment of normal ovarian epithelial cells affected neither proliferation nor epidermal growth factor receptor levels. CONCLUSION:Because the up-regulation of epidermal growth factor receptors by interferon gamma appears to be confined to malignant cells, interferon gamma may facilitate immunotherapy and imaging of ovarian cancers by means of immunoconjugates directed against the epidermal growth factor receptor.

journal_name

Am J Obstet Gynecol

authors

Boente MP,Berchuck A,Rodriguez GC,Davidoff A,Whitaker R,Xu FJ,Marks J,Clarke-Pearson DL,Bast RC Jr

doi

10.1016/0002-9378(92)91790-h

subject

Has Abstract

pub_date

1992-12-01 00:00:00

pages

1877-82

issue

6

eissn

0002-9378

issn

1097-6868

pii

0002-9378(92)91790-H

journal_volume

167

pub_type

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