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Acute lymphoblastic leukemic cells with T (thymus-derived) lymphocyte markers
Science (New York, N.Y.)
|December 28, 1973
Summary
Five of nine children with acute lymphoblastic leukemia (ALL) showed T-cell involvement, indicated by lymphoblast binding to sheep erythrocytes or reacting with thymocyte antiserum. All patients
Area of Science:
- Immunology
- Hematology
- Pediatric Oncology
Background:
- Acute lymphoblastic leukemia (ALL) is a heterogeneous cancer.
- Understanding the cellular origin of ALL is crucial for diagnosis and treatment.
Purpose of the Study:
- To investigate the immunophenotype of lymphoblasts in pediatric ALL.
- To determine the involvement of T-cells and B-cells in acute lymphoblastic leukemia.
Main Methods:
- Immunofluorescence microscopy was used to examine lymphoblasts.
- Sheep erythrocyte rosetting assay was performed.
- Antiserum to thymocytes was utilized for cell surface marker analysis.
Main Results:
- Five out of nine pediatric ALL patients exhibited lymphoblasts with T-cell markers.
- These T-cell markers included binding to sheep erythrocytes and reactivity with anti-thymocyte antiserum.
- All examined lymphoblasts lacked surface immunoglobulins, a marker for B-cells.
Conclusions:
- A subset of pediatric ALL cases may originate from T-lymphoblasts.
- The absence of B-cell markers suggests a distinct lineage in these cases.
- Immunophenotyping is essential for classifying ALL subtypes.