| | |  | | | | Record from Web of Science® | | | | | | |
| H-BLOOD-GROUP ANTIGEN CARRIED BY CD44V MODULATES TUMORIGENICITY OF RAT COLON-CARCINOMA CELLS |
|
|
| Author(s): LABARRIERE N, PIAU JP, OTRY C, DENIS M, LUSTENBERGER P, MEFLAH K, LEPENDU J |
| Source: CANCER RESEARCH Volume: 54 Issue: 23 Pages: 6275-6281 Published: DEC 1 1994 |
| Times Cited: 52 References: 35 |
| Abstract: Expression of carbohydrate ABH blood group antigens is oncodevelopmentally regulated and their presence on tumor cells constitutes a prognostic factor. However, it is not clear whether they directly affect tumor behavior. Using a rat model of colon carcinoma, we previously observed an association between the presence of H blood group antigens and tumorigenicity in syngeneic animals. In the present study, we show by immunoprecipitation experiments that cell surface H blood group antigens of a highly tumorigenic clone (PROb) are essentially carried by splice variants of the CD44 molecule containing exon V6. PROb cells were then transfected with an antisense fragment of the gene coding for a rat alpha(1-2)fucosyltransferase. This enzyme allows synthesis of H antigens from various beta-galactoside precursors. Transfected subclones of PROb cells were obtained which had significantly decreased enzymatic activity and H antigenic: cell surface levels. In contrast, no such changes were observed in control cells transfected with either the empty vector or with a sense fragment of the gene. Compared to controls, the antisense-transfected cells were far less tumorigenic in syngeneic animals. These results show that H blood group antigens at the surface of PROb colon carcinoma cells contribute to tumor progression. The presence of the fucosylated structures on CD44 could modulate the functions of this adhesion molecule. |
| Document Type: Article |
| Language: English |
Addresses:
1. INST BIOL, INSERM, CJF 9011, DEPT BIOCHEM MED, F-44035 NANTES 01, FRANCE |
| Publisher: AMER ASSOC CANCER RESEARCH, PUBLIC LEDGER BLDG, SUITE 816, 150 S. INDEPENDENCE MALL W., PHILADELPHIA, PA 19106 |
| Subject Category: Oncology |
| IDS Number: PU942 |
| ISSN: 0008-5472 |
|
| | | | | | | | | Record from Web of Science® | | | | | | | | | |