DBA Lectin Binds to Highly Proliferative Mouse Erythroleukemia Cells.

Area of Science:

• Hematology
• Cell Biology
• Immunology

Background:

• Hematopoietic malignancies involve abnormal blood cell proliferation.
• Current proliferation assays like Ki-67 and CFSE can impact cell viability.
• Lectins offer a potential method to identify proliferating cells while preserving viability.

Purpose of the Study:

• To investigate the use of lectins for identifying and isolating proliferating cells within hematopoietic malignancies.
• To assess whether lectin binding preserves cell viability during proliferation analysis.

Main Methods:

• A mouse lymphocyte cell line (F5-5.F1) was stained with various biotin-conjugated lectins.
• Cells were sorted using fluorescence-activated cell sorting (FACS).
• Morphology, gene expression, and proliferation assays were performed on sorted cell populations.

Main Results:

• Dolichos biflorus agglutinin (DBA), Lens culinaris agglutinin (LCA), and Phaseolus vulgaris agglutinin (PHA-E4) effectively sorted cells based on surface phenotype.
• Gene expression analysis revealed higher expression of Myc, Ccnd1, and Ccnd2 in the DBA(High) fraction.
• DBA binding patterns correlated with Ki-67 expression and proliferation assays, with DBA(High) indicating the highest proliferative activity.

Conclusions:

• Labeling with DBA enables the selection of proliferating cells via flow cytometry.
• DBA lectin staining is a viable method for identifying and isolating actively proliferating cells in hematopoietic malignancies.