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Lectin binding patterns in diffuse large cell lymphoma.

H J Ree, L Raine, J P Crowley

    Cancer
    |December 1, 1983
    PubMed
    Summary
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    Lectin binding patterns in diffuse large cell lymphoma (DLCL) tissues reveal distinct tumor cell and macrophage-histiocyte characteristics. Specific lectin reactions, like RCA and c-PNA, correlate with patient survival, suggesting prognostic value.

    Area of Science:

    • Oncology
    • Immunohistochemistry
    • Biomarker Discovery

    Background:

    • Diffuse large cell lymphoma (DLCL) is an aggressive non-Hodgkin lymphoma.
    • Understanding the tumor microenvironment, including macrophage-histiocytes, is crucial for DLCL prognosis.
    • Lectins are proteins that bind carbohydrates, offering potential insights into cellular heterogeneity.

    Purpose of the Study:

    • To investigate the lectin binding profiles of tumor cells and stromal macrophage-histiocytes in DLCL specimens.
    • To correlate these lectin binding patterns with patient survival outcomes.
    • To explore the potential of lectin binding as a prognostic biomarker in DLCL.

    Main Methods:

    • Paraffin-embedded lymph node specimens from DLCL patients were analyzed.

    Related Experiment Videos

  • A panel of lectins, including Ricinus communis agglutinin (RCA), Arachis hypogaea (c-PNA), Concanavalin A (Con A), Triticum vulgaris A (WGA), and Phaseolus vulgaris A (PHA), were used for staining.
  • Lectin binding patterns (cell surface vs. cytoplasmic) were assessed in tumor cells and stromal macrophage-histiocytes.

    • Main Results:

    • Varying degrees of lectin binding were observed with RCA, c-PNA, Con A, WGA, and PHA in most patients.
    • Tumor cells showed cell surface binding, while macrophage-histiocytes exhibited cytoplasmic binding.
    • Specific combinations of lectin binding, such as RCA+ on tumor cells and c-PNA+ on stromal macrophage-histiocytes, were associated with longer survival (>2 years).
    • Absence of c-PNA binding in stromal macrophage-histiocytes correlated with shorter survival.

    Conclusions:

    • Lectin binding analysis reveals heterogeneity in both DLCL tumor cells and their surrounding stromal macrophage-histiocytes.
    • Distinct lectin binding profiles, particularly involving RCA and c-PNA, demonstrate prognostic significance in DLCL.
    • These findings suggest that lectin staining could serve as a valuable tool for predicting patient outcomes in DLCL.