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Related Experiment Videos

Carcinoma-associated cytostructural antigenic alterations: detection by lectin binding.

D R Howard, P Ferguson, J G Batsakis

    Cancer
    |June 15, 1981
    PubMed
    Summary

    Tumor-associated carbohydrate precursor antigen (T-antigen) is frequently found in benign breast lesions but shows altered expression in malignant breast cancer. This suggests T-antigen may play a role in breast cancer immune response modulation.

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    Area of Science:

    • Oncology
    • Immunology
    • Glycobiology

    Background:

    • Tumor cell glycoproteins can influence anti-tumor immunity and immune evasion.
    • Blood group antigens and precursors have been implicated in anti-neoplasia immune responses.

    Purpose of the Study:

    • To investigate the expression of the T-antigen, a carbohydrate precursor antigen of the MN blood group system, in benign and malignant breast lesions.
    • To explore the potential role of T-antigen in the immune response to breast carcinoma.

    Main Methods:

    • Examined 44 benign and malignant breast lesions using immunohistochemistry.
    • Utilized peanut agglutinin (PNA) lectin binding to detect T-antigen presence and localization.

    Main Results:

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  • T-antigen was detected in 19 of 22 benign breast lesions, primarily on the luminal cytoplasmic membrane.
  • Malignant breast lesions displayed a different T-antigen expression pattern, with 17 of 22 carcinomas showing diffuse cytoplasmic T-antigen.
  • Five poorly differentiated carcinomas showed no detectable T-antigen.

    • Conclusions:

    • T-antigen expression patterns differ significantly between benign and malignant breast tissues.
    • Altered T-antigen expression in breast cancer may be associated with tumor differentiation and immune modulation.
    • Further research is warranted to elucidate the specific role of T-antigen in breast carcinoma's immune interactions.