TY - JOUR
AU - Herz,, Fritz
AB - Abstract Alkaline phosphatase isoenzyme expression of human tumor xenografts was studied by the growing of KB cells in immunosuppressed neonatal LEW rats. In culture these cells produced the oncoamniotic (FL) isoenzyme as the major form and the Regan isoenzyme as a minor fraction as well as a “hybrid” that shared properties of both of the other isoenzymes. Despite a reduction in specific activity, this isoenzyme pattern was essentially unchanged during in vivo growth. KB cells “pretreated” in culture with the glucocorticold prednisolone in hyperosmolal medium exhibited a decrease in the levels of the oncoamniotic (FL) isoenzyme and an increase in the Regan isoenzyme. During growth of pretreated cells in vivo, a time-dependent resumption in the expression of the oncoamniotic (FL) isoenzyme was associated with the disappearance of the Regan isoenzyme. This shows that the expression of the oncoamniotic (FL) isoenzyme is not restricted to human tumor cells monophenotypic with respect to alkaline phosphatase. 2 Supported by Public Health Service grant CA22360 from the National Cancer Institute. This content is only available as a PDF. Author notes 3 Department of Anatomy and The Oral Health Research Center, School of Dentistry, Fairleigh Dickinson University, Hackensack, N.J. 07601. 4 Department of Pathology, Montefiore Hospital and Medical Center, Albert Einstein College of Medicine, Bronx, N.Y. 10467. 5 We thank Elissa M. Leahy and Alexander Schermer for excellent technical assistance.
TI - Expression of KB Cell Alkaline Phosphatase Isoenzymes During Growth in Immunosuppressed LEW Rats
JF - JNCI: Journal of the National Cancer Institute
DO - 10.1093/jnci/63.2.357
DA - 1979-08-01
UR - https://www.deepdyve.com/lp/oxford-university-press/expression-of-kb-cell-alkaline-phosphatase-isoenzymes-during-growth-in-8qBin24Txi
SP - 357
EP - 362
VL - 63
IS - 2
DP - DeepDyve
ER -