Abnormalities of chromosome 1 and loss of heterozygosity on 1p in primary hepatomas

Simon, D.; Knowles, B.B.; Weith, A.

Oncogene 6(5): 765-770

1991


ISSN/ISBN: 0950-9232
PMID: 1646986
Document Number: 373399
Cytogenetic analysis of eight human hepatoma-derived cell lines and one primary hepatocellular carcinoma biopsy revealed multiple chromosome abnormalities; however, only chromosome 1 was consistently affected by rearrangements. Pseudopolysomy 1 as well as chromosome 1 deletions and/or translocations that resulted in loss of the distal 1p region from at least one copy of chromosome 1 were observed in all but one of the cell lines analysed. Molecular analyses of tumor-derived and normal genomic DNA from six cases of hepatocellular carcinoma and from two of hepatoblastoma, using a panel of chromosome 1p-specific DNA probes indicated allelic loss in the distal 1p region in five of the six hepatocellular carcinomas but not in either hepatoblastoma. These results suggest the location of a gene in the distal 1p region whose functional loss may be involved in hepatocellular carcinogenesis.

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