Monochromosome transfer provides functional evidence for growth-suppressive genes on chromosome 14 in nasopharyngeal carcinoma

Yue Cheng, Josephine M.Y. Ko, Hong L. Lung, Paulisally H.Y. Lo, Eric J. Stanbridge, Maria L. Lung*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

23 Citations (Scopus)

Abstract

In many cancers, including nasopharyngeal carcinoma (NPC), extensive and multiple regions of allelic loss occur on chromosome 14. However, to date no functionally conclusive tumor suppressor genes have yet been identified on this chromosome. Through use of the monochromosome transfer technique, this study provides functional evidence for the importance of two discrete regions of chromosome 14. A newly established A9 mouse donor cell line containing an intact copy of chromosome 14 was used for transfer of this intact chromosome into the NPC HONEI cell line. Twelve independently established microcell hybrids demonstrated uniform loss of specific chromosome 14 loci from both endogenous and exogenous alleles. By microsatellite typing and fluorescence in situ hybridization with BAC probes, the two critical regions were localized to 14q11.2-13.1 and 14q32.1. Selective elimination of these regions during hybrid selection was strongly associated with both hybrid survival and tumor growth in vivo. This functional evidence now narrows down the candidate areas for further studies and suggests that at least two hitherto unidentified growth-related genes localized on two critical regions of chromosome arm 14q play an important role in tumorigenesis.

Original languageEnglish
Pages (from-to)359-368
Number of pages10
JournalGenes Chromosomes and Cancer
Volume37
Issue number4
DOIs
Publication statusPublished - 1 Aug 2003

Scopus Subject Areas

  • Genetics
  • Cancer Research

Fingerprint

Dive into the research topics of 'Monochromosome transfer provides functional evidence for growth-suppressive genes on chromosome 14 in nasopharyngeal carcinoma'. Together they form a unique fingerprint.

Cite this