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Expression of the FGFR1 gene in human breast-carcinoma cells

✍ Scribed by Jocelyne Jacquemier; José Adelaide; Patricia Parc; Frédérique Penault-Llorca; Jacqueline Planche; Odile Delapeyriere; Daniel Birnbaum


Publisher
John Wiley and Sons
Year
1994
Tongue
French
Weight
742 KB
Volume
59
Category
Article
ISSN
0020-7136

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✦ Synopsis


Fibroblast growth factors (FGF) constitute a family of at least 9 members which act through high-affinity tyrosine-kinase receptors encoded by 4 distinct genes. In humans, the FGFRl gene is located in chromosomal region 8 ~1 2 . I t s amplification and expression were examined in a panel of I10 breast carcinoma samples by Southern-and Northern-blot analyses. FGFRl was amplified in 9yo and overexpressed in about l5Yo of the tumors studied. In situ hybridization experiments were performed on tissue sections of normal breast and tumors with a high level of FGFRl expression. In both normal and tumoral tissues, FGFRl RNA was detected in the epithelial cells. Overexpression of FGFRI seems to be associated with small, welldifferentiated diploid tumors.


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