Increased inosine-5'-phosphate dehydrogenase gene expression in solid tumor tissues and tumor cell lines - PubMed

Affiliations

• PMID: 1356621
• DOI: 10.2172/10148922

Increased inosine-5'-phosphate dehydrogenase gene expression in solid tumor tissues and tumor cell lines

F R Collart et al. Cancer Res. 1992.

Abstract

Inosine-5'-phosphate (IMP) dehydrogenase, a regulatory enzyme of guanine nucleotide biosynthesis, may play a role in cell proliferation and malignancy. To assess this role we examined IMP dehydrogenase expression in a series of human solid tumor tissues and tumor cell lines in comparison with their normal counterparts. Increased IMP dehydrogenase gene expression was observed in brain tumors relative to normal brain tissue and in sarcoma cells relative to normal fibroblasts. Similarly, in several B- and T-lymphoid leukemia cell lines, elevated levels of IMP dehydrogenase mRNA and cellular enzyme were observed in comparison with the levels in peripheral blood lymphocytes. These results are consistent with an association between increased IMP dehydrogenase expression and either enhanced cell proliferation or malignant transformation.

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