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Proc Natl Acad Sci U S A. 1988 Jul;85(13):4861-4.

Human HST1 (HSTF1) gene maps to chromosome band 11q13 and coamplifies with the INT2 gene in human cancer.

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  • 1Chromosome Research Unit, Faculty of Science, Hokkaido University, Sapporo, Japan.


The human HST1 gene, previously designated the hst gene, and now assigned the name HSTF1 for heparin-binding secretory transforming factor in human gene nomenclature, was originally identified as a transforming gene in DNAs from human stomach cancers by transfection assay with mouse NIH 3T3 cells. The amino acid sequence of the product deduced from DNA sequences of the HST1 cDNA and genomic clones had approximately 40% homology to human basic and acidic fibroblast growth factors and mouse Int-2-encoded protein. We have mapped the human HST1 gene to chromosome 11 at band q13.3 by Southern blot hybridization analysis of a panel of human and mouse somatic cell hybrids and in situ hybridization with an HST1 cDNA probe. The HST1 gene was found to be amplified in DNAs obtained from a stomach cancer and a vulvar carcinoma cell line, A431. In all of these samples of DNA, the INT2 gene, previously mapped to human chromosome 11q13, was also amplified to the same degree as the HST1 gene.

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