Changes in N-acetylglucosaminyltransferase III, IV and V in renal cell carcinoma
- PMID: 9201254
- PMCID: PMC12200469
- DOI: 10.1007/BF01208642
Changes in N-acetylglucosaminyltransferase III, IV and V in renal cell carcinoma
Abstract
The activities of N-acetylglucosaminyltransferase (GnT) III, IV and V were determined in 10 cases of renal cell carcinoma (RCC) and compared with the normal kidney cortex (NKC) regions of the same kidney resected from RCC patients. It was found that the GnT III and GnT IV activities decreased consistently in all samples of RCC, while GnT V activity increased, decreased or did not change in different samples. The mean levels of GnT III and GnT IV activities in RCC were found to be very significantly lower than those of NKC on statistical analysis, but the mean value of GnT V activity was almost identical in RCC and NKC. The decrease in GnT activities in RCC were compatible with the decrease in bisecting N-acetylglucosamine (GlcNAc) and antennary number of complex-type N-glycans in gamma-glutamyltranspeptidase (gamma-GT) partially purified from RCCs as studied with concanavalin A (ConA) affinity column chromatography, which showed a decrease of unbound fraction and increase of bound fractions.
References
-
- Bradford MM (1976) A rapid and sensitive method for quantitation of microquantities of protein utilizing the principle of protein dye binding. Anal Biochem 72:248–254 - PubMed
-
- Brewer CF, Bhattacharyya L (1986) Specificity of Concanavalin A binding to asparagine linked glycopeptides. A nuclear magnetic relaxation dispersion study. J Biol Chem 261:7306–7310 - PubMed
-
- Brockhausan I, Narasimhan S, Schachter H (1988) The biosynthesis of highly branched N-glycans, Studies on the sequential pathway and functional role ofN-acetylglucosaminyl transferase I, II, III, IV, V and VI. Biochimie 70:1521–1533 - PubMed
-
- Dennis JW (1988) Asn-linked oligosaccharide processing and malignant potential. Cancer Survey 7:573–595 - PubMed