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Differential expression of CD54/intercellular adhesion molecule-1 in myeloid leukemias and in lymphoproliferative

M Maio1, A Pinto, A Carbone

  • 1Division of Experimental Oncology 2, CRO Aviano, Italy.

Blood
|August 15, 1990
PubMed

Insights

CD54/intercellular adhesion molecule-1 (ICAM-1) expression varies across hematologic malignancies. This study found CD54 is present on myeloid and B-lymphoid cells but absent in T-lymphoid malignancies, potentially indicating malignancy grade.

Area of Science:

  • Hematology
  • Immunology
  • Oncology

Background:

  • CD54, also known as intercellular adhesion molecule-1 (ICAM-1), is a cell surface glycoprotein.
  • Its expression patterns in various hematologic malignancies are not fully elucidated.
  • Understanding CD54 expression may offer insights into disease characteristics and prognosis.

Purpose of the Study:

  • To investigate the heterogeneous expression of CD54 on malignant cells in a cohort of patients with hematologic malignancies.
  • To correlate CD54 expression with specific subtypes and differentiation stages of myeloid and lymphoid malignancies.
  • To explore the potential relationship between CD54 expression levels and the degree of malignancy.

Main Methods:

  • Indirect immunofluorescence staining was employed using the monoclonal antibody (MoAb) CL203.4.
  • Malignant cells from 269 patients diagnosed with myeloid, B-lymphoid, and T-lymphoid malignancies were analyzed.
  • Expression levels of CD54 were quantified and correlated with clinical and immunophenotypic data.

Main Results:

  • CD54 was heterogeneously expressed across hematologic malignancies, detected in 57/118 myeloid and 69/135 B-lymphoid malignancies, but not in 16 T-lymphoid malignancies.
  • In myeloid malignancies, CD54 was preferentially expressed in stem cell-derived types like chronic myelogenous leukemia in blast phase and myelodysplastic syndromes.
  • CD54 expression in B-lymphoid malignancies correlated with differentiation stage and grade, with higher levels in more mature or aggressive forms like "bright SIg" CLL and high-grade B-NHL.

Conclusions:

  • CD54 expression is a variable marker in hematologic malignancies, absent in T-lymphoid types.
  • Its differential expression in myeloid malignancies associates with stem cell origin and specific subtypes.
  • In B-lymphoid malignancies, CD54 levels may reflect differentiation stage and degree of malignancy, suggesting prognostic relevance.

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