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Production of fetal-like alkaline phosphatase by HeLa cells

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Abstract

Alkaline phosphatase produced by HeLa cells differs in its chemical and physical properties from the enzyme found in adult organs and tissues (Cox and Griffin, 1967). In the present study HeLa cell alkaline phosphatase was compared to a fetal form of the enzyme found in human placenta. Both enzymes have approximately the same molecular weight as judged by sucrose density gradients, and the chemical and physical properties of these alkaline phosphatases are similar. The electrophoretic pattern of the HeLa cell enzyme resembles the placental alkaline phosphatase of the heterozygous FS phenotype except that it is slower moving. Double immunodiffusion using an antibody against HeLa cell alkaline phosphatase and placental and HeLa cell enzymes as antigens shows a single line of partial identity between the two enzymes, with a small spur suggesting additional antigenic sites on the HeLa cell enzyme. The data suggest that malignant cells in culture, HeLa, are producing a fetal-like alkaline phosphatase probably by “derepression of the genome.” However, the electrophoretic and immunological characteristics of the enzyme are altered sufficiently so that it can be distinguished from the normally produced fetal enzyme.

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Authors and Affiliations

  1. Department of Medicine, New York University Medical Center, New York, New York

    Norton A. Elson & Rody P. Cox

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  1. Norton A. Elson
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  2. Rody P. Cox
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This work was supported by U.S. Public Health Service Grant GM 15508 and the Health Research Council of the City of New York.

Fourth-year student; Honors Program.

Career Scientist Health Research Council of the City of New York.

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Elson, N.A., Cox, R.P. Production of fetal-like alkaline phosphatase by HeLa cells. Biochem Genet 3, 549–561 (1969). https://doi.org/10.1007/BF00485476

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  • DOI: https://doi.org/10.1007/BF00485476

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