Volume 44, Issue 4 pp. 731-737
Human Cancer
Full Access

Cell fusion in tumor development and progression: Occurrence of cell fusion in primary methylcholanthrene-induced tumorigenesis

M. B. Fortuna

M. B. Fortuna

Laboratory of Cell Biology, AMC Cancer Research Center, 1600 Pierce Street, Denver, CO 80214, USA

Search for more papers by this author
M. J. Dewey

M. J. Dewey

Department of Biology, University of South Carolina, Columbia, SC 29208, USA

Search for more papers by this author
P. Furmanski

Corresponding Author

P. Furmanski

Laboratory of Cell Biology, AMC Cancer Research Center, 1600 Pierce Street, Denver, CO 80214, USA

Laboratory of Cell Biology, AMC Cancer Research Center, 1600 Pierce Street, Denver, CO 80214, USASearch for more papers by this author
First published: 15 October 1989
Citations: 29

Abstract

Definitive evidence for the occurrence of cell fusion in tumorigenesis was sought in methylcholanthrene-induced sarcomas. This was approached by using allophenic mice generated from strains differing for electrophoretic variants of the ubiquitous, dimeric enzyme glucose phosphate isomerase, with fusion assessed by heterodimer formation. Eighty-three carefully trimmed primary tumor samples (from 23 individual tumors in allophenic mice) were analyzed, as were 1,140 clones derived from them. In all primary tumor samples, zymograms exhibited one GPI homopolymeric band. Expression of a hybrid band (indicative of a fusion event) was not observed in these samples. However, 9 (0.8%) of the tumor clones demonstrated a distinct and reproducible hybrid band which was uniformly lost upon recloning. Our data suggest that cell fusion, although uncommon, occurs in the clonogenic cell fraction during primary MCA tumorigenesis and is followed rapidly by chromosome segregation.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.