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Related Experiment Videos

Intermediate filaments as histologic markers: an overview.

M Osborn

    The Journal of Investigative Dermatology
    |July 1, 1983
    PubMed
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    Intermediate filament (IF) typing identifies cell origins and aids tumor diagnosis. This method classifies cells based on specific IF proteins like cytokeratins and neurofilaments (NFs), proving valuable in pathology.

    Area of Science:

    • Cell Biology
    • Biochemistry
    • Pathology

    Background:

    • Intermediate filaments (IFs) are crucial cytoskeletal components.
    • Different cell types express distinct IF proteins, offering insights into cellular origin.

    Purpose of the Study:

    • To classify cells and tissues based on their intermediate filament protein expression.
    • To explore the diagnostic utility of IF typing in human pathology, particularly for tumors.

    Main Methods:

    • Immunologic techniques for identifying IFs in cells and tissues.
    • Protein and DNA sequence analysis to understand IF protein relationships.
    • Review of applications in human pathologic material.

    Main Results:

    Related Experiment Videos

  • Six classes of cells identified by IFs: epithelial (cytokeratins), neuronal (neurofilaments), glial (GFA), muscle (desmin), mesenchymal (vimentin), and IF-negative.
  • IF typing accurately reflects known histologic classifications.
  • Demonstrated utility in subtyping tumors like carcinomas, neuronal tumors, gliomas, rhabdomyosarcomas, and sarcomas.

    • Conclusions:

    • Intermediate filament typing is a reliable method for determining cell and tissue origin.
    • IF typing offers significant diagnostic value in challenging cases within human pathology.