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Altered B-cell receptor signaling kinetics distinguish human follicular lymphoma B cells from tumor-infiltrating nonmalignant B cells by Jonathan M. Irish,

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Presentation on theme: "Altered B-cell receptor signaling kinetics distinguish human follicular lymphoma B cells from tumor-infiltrating nonmalignant B cells by Jonathan M. Irish,"— Presentation transcript:

1 Altered B-cell receptor signaling kinetics distinguish human follicular lymphoma B cells from tumor-infiltrating nonmalignant B cells by Jonathan M. Irish, Debra K. Czerwinski, Garry P. Nolan, and Ronald Levy Blood Volume 108(9):3135-3142 November 1, 2006 ©2006 by American Society of Hematology

2 Distinguishing BCR signaling events and FL biopsy cell subsets by flow cytometry. Jonathan M. Irish et al. Blood 2006;108:3135-3142 ©2006 by American Society of Hematology

3 Activation of BCR signaling varies among primary FL samples and contrasts with that of normal B cells and a lymphoma cell line. Jonathan M. Irish et al. Blood 2006;108:3135-3142 ©2006 by American Society of Hematology

4 Rapid activation of BCR-mediated signaling in the presence of H2O2 is a common feature of FL sample B cells and differs from normal PBMC B cells. Jonathan M. Irish et al. Blood 2006;108:3135-3142 ©2006 by American Society of Hematology

5 Altered BCR signaling kinetics distinguish individual FL samples. Jonathan M. Irish et al. Blood 2006;108:3135-3142 ©2006 by American Society of Hematology

6 Tumor cell–specific BCR-mediated Btk, Syk, Erk1/2, and p38 signaling. Jonathan M. Irish et al. Blood 2006;108:3135-3142 ©2006 by American Society of Hematology

7 Tumor cell–specific BCR-mediated Syk signaling. Jonathan M. Irish et al. Blood 2006;108:3135-3142 ©2006 by American Society of Hematology

8 Tumor cell–specific BCR-mediated signaling is common in FL. (A) BCR-mediated signaling at 4 and 30 minutes following BCR cross-linking in the presence of H2O2 (α-μ/γ+ H2O2) was measured in subsets of the CD20+ B cells from 4 FL patient samples (FL-P07, FL-P... Jonathan M. Irish et al. Blood 2006;108:3135-3142 ©2006 by American Society of Hematology


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