Expression of BTK/p-BTK is different between CD5+ and CD5- B lymphocytes from Autoimmune Hemolytic Anemia/Evans syndromes

Hematology
Ningning DuanZonghong Shao

Abstract

Objective: To explore the activity of B subsets from Autoimmune Hemolytic Anemia/Evans syndrome (AIHA/ES) patients. Methods: The expression of Bruton's tyrosine kinase (BTK) and phosphorylated BTK (p-BTK) on CD5+CD19+B and CD5-CD19+B lymphocytes were detected using flow cytometry in AIHA/ES patients with different disease states, healthy controls (HCs) and chronic lymphocytic leukemia (CLL) patients. The correlations of expressed BTK and p-BTK with clinical variables were analyzed. Results: Thirty six AIHA/ES patients (16 hemolytic, 20 remission), 11 CLL patients, and 15 HCs were enrolled. The expression levels of BTK and p-BTK on CD5+B lymphocytes in AIHA/ES patients were higher than those in HCs and CLL patients. The latter two groups had no significant difference, and were positively correlated with the quantity of IgE. The ratio of p-BTK to BTK on CD5+B lymphocytes of the hemolytic and remission groups was obviously higher than that on CD5-B lymphocytes (74.62 ± 6.42% and 29.63 ± 10.19%, respectively; P = 0.001 versus 77.95 ± 9.57% and 26.29 ± 6.86%, respectively; P = 0.006). The ratio of p-BTK to BTK on CD5+B lymphocytes (54.89 ± 9.56%) and CD5-B lymphocytes (30.86 ± 12.47%) did not differ significantly in HCs (P = 0.109)....Continue Reading

References

Nov 26, 2010·Immunity·Laura BelverAlmudena R Ramiro
Dec 23, 2015·Nature Immunology·Jill HenaultMiguel A Sanjuan
Mar 13, 2016·International Journal of Hematology·Hongli ZhuZonghong Shao
Feb 10, 2018·Autoimmunity Reviews·Jean-François AugustoChristophe Richez

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Citations

May 19, 2020·British Journal of Haematology·Monica LiSita Bushan

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