What question did this study set out to answer?

To examine the regulation and distribution of ICAM-1 expression across stages of human lymphohematopoietic differentiation and in lymphoid malignancies.

May 15, 1989BloodOpen Access

Regulation of expression of a human intercellular adhesion molecule (ICAM-1) during lymphohematopoietic differentiation

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To examine the regulation and distribution of ICAM-1 expression across stages of human lymphohematopoietic differentiation and in lymphoid malignancies.
Analyzed cell-surface ICAM-1 and LFA-1 levels on bone marrow progenitors, circulating blood cells, and mature lymphoid tissue subsets.
Evaluated ICAM-1 induction in B cells, T cells, macrophages, and granulocytes following in vitro activation with mitogens.
Profiled ICAM-1 expression across hematopoietic neoplasms, comparing solitary lymphoma masses against diffuse lymphomas and chronic lymphocytic leukemia.
ICAM-1 was weakly expressed or absent on circulating blood cells but significantly expressed on select bone marrow progenitors and strongly upregulated upon in vitro mitogen activation across all tested lineages.
While LFA-1 was consistently positive across differentiation stages, ICAM-1 expression fluctuated widely, indicating that ICAM-1 availability controls LFA-1/ICAM-1-mediated homotypic adhesion.
High ICAM-1 levels correlated with localized, adhesive tumor architecture in solitary lymphoma masses, whereas diffuse lymphoma and chronic lymphocytic leukemia cells exhibited weak expression.

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Implication

Laboratory study reveals dynamic regulation of ICAM-1 during hematopoietic differentiation, indicating that ICAM-1 levels govern lymphocyte adhesion and lymphoid tumor dissemination.

Cite This Study

Boyd et al. (1989) studied this question.

synapsesocial.com/papers/6a7e3e26b44705ee468565c5 https://doi.org/10.1182/blood.v73.7.1896.bloodjournal7371896

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Implication

Laboratory study reveals dynamic regulation of ICAM-1 during hematopoietic differentiation, indicating that ICAM-1 levels govern lymphocyte adhesion and lymphoid tumor dissemination.

Regulation of expression of a human intercellular adhesion molecule (ICAM-1) during lymphohematopoietic differentiation

Key Points

Discussion

Implication

Cite This Study

Regulation of expression of a human intercellular adhesion molecule (ICAM-1) during lymphohematopoietic differentiation

Key Points

Discussion

Implication

Cite This Study

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