Abstract
Electrophoresis of cytosol prepared from normal and malignant tissue samples of uterine cervix and endometrium revealed interesting differences which may be relevant to the characteristic alterations in glucose metabolism associated with tumour development. Hexokinase II was detected in 30% of the cancer material from both sources, but in none of the samples of normal cervix. A duplet band of 6-phosphogluconate dehydrognease was seen in the majority of the cancer samples but in no sample of normal cervix, it appeared to be partly due to ageing of the sample, and is not phenotypically related to the malignant process. Analysis of genetic variance for phosphoglucomutase at the PGM1 locus revealed a highly significant excess of the PGM1-1 phenotype in patients with cancer of the endometrium, which may reflect susceptibility to endometrial cancer in patients with this phenotype. At the PGM2 locus, samples of malignant cervix were deficient in "Band f" compared with normal cervix samples, all of which showed this band. Conversely, gene products of the PGM3 locus were found in most samples of malignant cervix and a small minority of normal cervix samples. Compared with the isomorphic distribution of lactate dehydrogenase enzymes in normal uterine tissue, cancers showed a shift towards either a more anodal or a more cathodal pattern. The former may be associated with tumours enjoying a good oxygen supply, and the latter with tumours which, because of their depth or poor blood supply have to function under less aerobic conditions.
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Marshall, M., Neal, F. & Goldberg, D. Isoenzymes of hexokinase, 6-phosphogluconate dehydrogenase, phosphoglucomutase and lactate dehydrogenase in uterine cancer. Br J Cancer 40, 380–390 (1979). https://doi.org/10.1038/bjc.1979.192
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DOI: https://doi.org/10.1038/bjc.1979.192
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