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Decreased Tumorigenicity Correlates with Expression of Altered Cell Surface Carbohydrates in Lec9 CHO Cells
- Source :
- Molecular and Cellular Biology. 6:1268-1275
- Publication Year :
- 1986
- Publisher :
- Informa UK Limited, 1986.
-
Abstract
- To investigate a role for surface carbohydrates in cellular malignancy, 15 different glycosylation-defective CHO cell mutants were examined for their tumorigenic and metastatic capacities after subcutaneous injection into nude mice. Most of the glycosylation mutants displayed similar or slightly decreased tumorigenicity compared with parental CHO cells. Neither parental CHO cells nor any of the mutants were observed to metastasize. However, independent isolates of one mutant type, Lec9, showed a dramatic reduction in tumor formation. The altered carbohydrates expressed at the surface of Lec9 cells appeared to be responsible for their loss of tumorigenicity, because revertants for lectin resistance were able to form tumors, and a double mutant (Lec9.Lec1) that expressed a Lec1 glycosylation phenotype also formed tumors. Finally, Lec9 cells were able to form tumors in gamma-irradiated nude mice, suggesting that recognition by an irradiation-sensitive host cell(s) was responsible for their reduced tumorigenicity in untreated nude mice.
- Subjects :
- Glycosylation
Mutant
Cell
Carbohydrates
Mice, Nude
Biology
medicine.disease_cause
Cell Line
Cell membrane
chemistry.chemical_compound
Mice
Cricetulus
Cricetinae
medicine
Animals
Neoplasm Metastasis
Molecular Biology
Mutation
Chinese hamster ovary cell
Cell Membrane
Ovary
Cell Biology
Molecular biology
Phenotype
medicine.anatomical_structure
Cell Transformation, Neoplastic
chemistry
Cell culture
Female
Research Article
Subjects
Details
- ISSN :
- 10985549
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Molecular and Cellular Biology
- Accession number :
- edsair.doi.dedup.....4b45c52bffc81ef416698579108f548a
- Full Text :
- https://doi.org/10.1128/mcb.6.4.1268-1275.1986