Choriocarcinoma in Vitro: Evidence for Exchange of Enzymes Between Culture Medium and Cells

J. B. Edlow, P. O. Kohler, J. C. Robinson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


β-Glucuronidase and hexosaminidase isoenzyme patterns of choriocarcinoma in culture are similar to those of placenta. We present evidence for an exchange of enzymes between the culture medium and choriocarcinoma cells. The β-glucuronidase pattern for choriocarcinoma grown in medium supplemented with horse serum has a component, not found in placenta, with electrophoretic mobility identical to that of the single band of horse serum β-glucuronidase. Hexosaminidase activity in the culture medium removed was 40% higher than the medium added to the culture. The suggestion is made that the extra β-glucuronidase isoenzyme is derived from the serum supplement of the culture medium and that the increase in hexosaminidase activity in the medium removed from the culture is consistent with the release of this enzyme from the cells.

Original languageEnglish (US)
Pages (from-to)798-801
Number of pages4
JournalProceedings of the Society for Experimental Biology and Medicine
Issue number3
StatePublished - Dec 1972
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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