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Related Experiment Videos

Alkaline phosphatase expression in human cell lines derived from primary hepatomas.

T Tokiwa1, A Endo, J Sato

  • 1Division of Pathology, Okayama University Medical School, Japan.

Experimental Cell Biology
|January 1, 1989
PubMed
Summary

Variant-like alkaline phosphatase (ALP) isozymes were detected in human hepatoma cell lines. This abnormal ALP may aid in identifying hepatoma cell lines, particularly those negative for alpha-fetoprotein (AFP) or albumin.

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Area of Science:

  • Biochemistry
  • Oncology
  • Molecular Biology

Background:

  • Alkaline phosphatase (ALP) is a crucial enzyme with various isozymes.
  • Distinguishing between liver-type ALP and abnormal variants is important in diagnosing liver cancers.
  • Hepatocellular carcinoma (HCC) and other liver cancers often exhibit altered ALP profiles.

Purpose of the Study:

  • To investigate the isozyme patterns of alkaline phosphatase (ALP) in human liver cancer cell lines.
  • To identify novel ALP variants that could serve as biomarkers for hepatoma.
  • To assess the utility of variant-like ALP in identifying cell lines lacking traditional markers like alpha-fetoprotein (AFP).

Main Methods:

  • Electrophoretic analysis of alkaline phosphatase (ALP) isozymes.

Related Experiment Videos

  • Utilized human cell lines derived from hepatoblastoma, hepatocellular carcinoma (HCC), and cholangiocellular carcinoma.
  • Compared detected ALP isozymes with known liver-type and variant ALP patterns.

    • Main Results:

    • Most tested liver cancer cell lines exhibited a standard liver-type ALP isozyme.
    • An abnormal, variant-like ALP isozyme was identified in one hepatoblastoma and two HCC cell lines.
    • One of the variant-like ALP-positive HCC cell lines was negative for alpha-fetoprotein (AFP).

    Conclusions:

    • Variant-like ALP isozymes represent a potential biomarker for human hepatoma.
    • This abnormal ALP can be particularly useful for identifying hepatoma cell lines that do not express AFP or albumin.
    • Further research into variant-like ALP could improve diagnostic strategies for liver cancers.