TY - JOUR
T1 - N-acetylglucosaminyltransferase V and β1-6 branching N-linked oligosaccharides are associated with good prognosis of patients with bladder cancer
AU - Ishimura, Hirofumi
AU - Takahashi, Toshiko
AU - Nakagawa, Hiroaki
AU - Nishimura, Shin Ichiro
AU - Arai, Yoichi
AU - Horikawa, Yohei
AU - Habuchi, Tomonori
AU - Miyoshi, Eiji
AU - Kyan, Atsushi
AU - Hagisawa, Shigeru
AU - Ohyama, Chikara
PY - 2006/4/15
Y1 - 2006/4/15
N2 - Purpose: N-acetylglucosaminyltransferaseV (GnT-V) is an enzyme that catalyzes β1-6 branching of N-acetylglucosamine on asparagine (N)-linked oligosaccharides (N-glycan) of cell proteins. We examined the relationship between GnT-V expression and clinicopathologic features of the patients with bladder cancer. Experimental Design: We immunohistochemically examined GnT-V expression in paraffin-embedded bladder cancer specimen using anti-GnT-V monoclonal antibody. We compared GnT-V expression with cause-specific survival of the patients with bladder cancer treated by radical cystectomy. Kaplan-Meier survival curves were generated to show the cause-specific survival. Univariate and multivariate analyses were carried out to compare GnT-V expression with other clinical and pathologic variables. We also evaluated mRNA expression of GnT-V and N-linked oligosaccharide structure in bladder cancer specimens. Results: Immunohistochemistry revealed that GnT-V expression inversely correlated with tumor grade and stage. The incidence of positive GnT-V expression in bladder cancer was significantly higher in low-grade/superficial cancer than in high-grade/invasive cancer. The patients whose tumor was positive for GnT-V survived significantly longer than those whose tumor was negative for GnT-V. Univariate and multivariate analyses revealed that GnT-V expression was an independent predictor of prognosis of the patient. The expression of GnT-V mRNA determined by reverse transcription-PCR was consistent with the results with immunohistochemistry for tumor samples. Carbohydrate structural analysis revealed that superficial bladder cancer is rich in branched N-linked oligosaccharides, for which biosynthesis GnT-V is responsible. Conclusions: GnT-V and its resultant β1-6 branching N-linked oligosaccharides are closely related to low malignant potential and good prognosis of the patients with bladder cancer.
AB - Purpose: N-acetylglucosaminyltransferaseV (GnT-V) is an enzyme that catalyzes β1-6 branching of N-acetylglucosamine on asparagine (N)-linked oligosaccharides (N-glycan) of cell proteins. We examined the relationship between GnT-V expression and clinicopathologic features of the patients with bladder cancer. Experimental Design: We immunohistochemically examined GnT-V expression in paraffin-embedded bladder cancer specimen using anti-GnT-V monoclonal antibody. We compared GnT-V expression with cause-specific survival of the patients with bladder cancer treated by radical cystectomy. Kaplan-Meier survival curves were generated to show the cause-specific survival. Univariate and multivariate analyses were carried out to compare GnT-V expression with other clinical and pathologic variables. We also evaluated mRNA expression of GnT-V and N-linked oligosaccharide structure in bladder cancer specimens. Results: Immunohistochemistry revealed that GnT-V expression inversely correlated with tumor grade and stage. The incidence of positive GnT-V expression in bladder cancer was significantly higher in low-grade/superficial cancer than in high-grade/invasive cancer. The patients whose tumor was positive for GnT-V survived significantly longer than those whose tumor was negative for GnT-V. Univariate and multivariate analyses revealed that GnT-V expression was an independent predictor of prognosis of the patient. The expression of GnT-V mRNA determined by reverse transcription-PCR was consistent with the results with immunohistochemistry for tumor samples. Carbohydrate structural analysis revealed that superficial bladder cancer is rich in branched N-linked oligosaccharides, for which biosynthesis GnT-V is responsible. Conclusions: GnT-V and its resultant β1-6 branching N-linked oligosaccharides are closely related to low malignant potential and good prognosis of the patients with bladder cancer.
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U2 - 10.1158/1078-0432.CCR-05-1938
DO - 10.1158/1078-0432.CCR-05-1938
M3 - Article
C2 - 16638859
AN - SCOPUS:33646388649
VL - 12
SP - 2506
EP - 2511
JO - Clinical Cancer Research
JF - Clinical Cancer Research
SN - 1078-0432
IS - 8
ER -
