Volume 37, Issue 2 pp. 233-240
Experimental Cancer
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Altered growth properties and cell surface changes in ras transformed mouse bladder epithelium

I. C. Summerhayes

I. C. Summerhayes

Institute of Cancer Research: Royal Cancer Hospital, Chester Beatty Laboratories, Fulham Road, London SW3 6JB, UK

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P. Malone

P. Malone

Institute of Cancer Research: Royal Cancer Hospital, Chester Beatty Laboratories, Fulham Road, London SW3 6JB, UK

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K. Visvanathan

K. Visvanathan

Institute of Cancer Research: Royal Cancer Hospital, Chester Beatty Laboratories, Fulham Road, London SW3 6JB, UK

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First published: 15 February 1986
Citations: 8

Abstract

Transfection of the c-Ha-ras-1 oncogene, cloned from EJ/T24 cells, into different mouse bladder epithelial cell lines resulted in the acquisition of tumorigenic potential and, in all but one cell line (MB331), anchorage-independent growth. Sera from syngeneic mice bearing tumours immunoprecipitated an 18 kDa protein from ras-transfected urothelial cells which was not detectable in their parental counterparts. Screening of a limited panel of mouse cell lines showed this protein to be urothelium-specific and associated with the expression of an activated ras gene. Polyoma middle T and v-myc-transfected bladder epithelial cells did not express this 18kDa protein. Localization of this protein to the cell surface was demonstrated by immunofluorescence and absorption studies.

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