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Human chromosome II inhibits tumorigenicity of a murine squamous cell carcinoma cell line

Human chromosome II inhibits tumorigenicity of a murine squamous cell carcinoma cell line Loss of heterozygosity (LOH) of mouse chromosome 7 has been consistently demonstrated in chemically induced murine squamous cell carcinomas (SCCs). The region of this chromosome presenting LOH in the mouse tumors is syntenic to human chromosome segments II p I5 and II q. To determine whether the introduction of human chromosome (Hchr) II can suppress the growth of murine SCC, we injected four clones of a chemically induced murine SCC cell line bearing an Hchr II into athymic BALB/c nude mice. All microcell hybrid clones with Hchr II (CH721Hchr II) had latency periods twice as long as those of the parental CH72 cells and control hybrids containing a Hchr 12. Tumor‐derived cells from CH721Hchr II hybrids had lost centromeric and telomeric sequences from Hchr II. All repressed cell lines grew significantly m e slowly in vitro than did the controls. These results suggest that Hchr II contains a tumor‐suppressor gene capable of inhibiting tumorigenicity in chemically induced SCC, confirming common pathways in the development of human neoplasias and the murine model. © 1995 Wiley‐Liss, Inc. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Genes, Chromosomes and Cancer Wiley

Human chromosome II inhibits tumorigenicity of a murine squamous cell carcinoma cell line

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References (26)

Publisher
Wiley
Copyright
Copyright © 1995 Wiley‐Liss, Inc., A Wiley Company
ISSN
1045-2257
eISSN
1098-2264
DOI
10.1002/gcc.2870130108
Publisher site
See Article on Publisher Site

Abstract

Loss of heterozygosity (LOH) of mouse chromosome 7 has been consistently demonstrated in chemically induced murine squamous cell carcinomas (SCCs). The region of this chromosome presenting LOH in the mouse tumors is syntenic to human chromosome segments II p I5 and II q. To determine whether the introduction of human chromosome (Hchr) II can suppress the growth of murine SCC, we injected four clones of a chemically induced murine SCC cell line bearing an Hchr II into athymic BALB/c nude mice. All microcell hybrid clones with Hchr II (CH721Hchr II) had latency periods twice as long as those of the parental CH72 cells and control hybrids containing a Hchr 12. Tumor‐derived cells from CH721Hchr II hybrids had lost centromeric and telomeric sequences from Hchr II. All repressed cell lines grew significantly m e slowly in vitro than did the controls. These results suggest that Hchr II contains a tumor‐suppressor gene capable of inhibiting tumorigenicity in chemically induced SCC, confirming common pathways in the development of human neoplasias and the murine model. © 1995 Wiley‐Liss, Inc.

Journal

Genes, Chromosomes and CancerWiley

Published: May 1, 1995

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