Overexpression of the fibroblast growth factor receptor-1 gene correlates with liver metastasis in colorectal cancer.
Expression of the fibroblast growth factor (FGF)-1, FGF-2, fibroblast growth factor receptor (FGFR)-1, and FGFR-2 genes has been reported in various cancers and is associated with poor outcomes in patients with solid tumors. This study examined the relations between the relative expression of the FGF genes and clinicopathological factors, especially invasion and metastasis, in patients with colorectal cancer. We studied surgical specimens of cancer tissue and adjacent normal mucosa obtained from 202 patients with untreated colorectal carcinoma. The relative expression levels of FGF-1, FGF-2, FGFR-1, and FGFR-2 mRNA in cancer and in normal adjacent mucosa were measured by quantitative real-time, reverse-transcription polymerase chain reaction. The relative expression level of the FGFR-2 gene was higher in normal adjacent mucosa than in cancer, whereas the relative expression levels of the FGF-1, FGF-2, and FGFR-1 genes were similar. FGFR-1 gene expression levels were higher in the presence than in the absence of liver metastasis. An analysis of the relation between clinicopathological features and gene expression showed that overexpression of FGFR-1 correlated with liver metastasis. Our results suggested that overexpression of the FGFR-1 gene might lead to liver metastasis in colorectal cancer. Overexpression of the FGFR-1 gene may thus be a useful predictor of liver metastasis in patients with colorectal cancer.
Sato
Tsutomu
T
Gastroenterological Center, Yokohama City University Medical Center, Kanagawa-ken 232-0024, Japan. t-sato@urahp.yokohama-cu.ac.jp
Oshima
Takashi
T
Yoshihara
Kazue
K
Yamamoto
Naoto
N
Yamada
Roppei
R
Nagano
Yasuhiko
Y
Fujii
Shoichi
S
Kunisaki
Chikara
C
Shiozawa
Manabu
M
Akaike
Makoto
M
Rino
Yasushi
Y
Tanaka
Katsuaki
K
Masuda
Munetaka
M
Imada
Toshio
T
D000368:Aged; D014408:Biomarkers, Tumor / Q000235:genetics; D015179:Colorectal Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000473:pathology*; D005260:Female; D016220:Fibroblast Growth Factor 1 / Q000096:biosynthesis / Q000235:genetics; D016222:Fibroblast Growth Factor 2 / Q000096:biosynthesis / Q000235:genetics; D015870:Gene Expression; D006801:Humans; D008113:Liver Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000556:secondary*; D008297:Male; D008875:Middle Aged; D012333:RNA, Messenger / Q000032:analysis; D051496:Receptor, Fibroblast Growth Factor, Type 1 / Q000096:biosynthesis / Q000235:genetics*; D051497:Receptor, Fibroblast Growth Factor, Type 2 / Q000096:biosynthesis / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction
D014408:Biomarkers, Tumor; D012333:RNA, Messenger; D016222:Fibroblast Growth Factor 2; D016220:Fibroblast Growth Factor 1; D051496:Receptor, Fibroblast Growth Factor, Type 1; D051497:Receptor, Fibroblast Growth Factor, Type 2