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2014 ; 150
(2
): 184-91
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Peripheral CD27-CD21- B-cells represent an exhausted lymphocyte population in
hepatitis C cirrhosis
#MMPMID24434272
Doi H
; Tanoue S
; Kaplan DE
Clin Immunol
2014[Feb]; 150
(2
): 184-91
PMID24434272
show ga
Hepatitis C cirrhosis is associated with a profound disappearance of memory
B-cells. We sought to determine if this loss is associated with the expansion of
the CD27(-)CD21(-) tissue-like memory B-cells with features of B-cell exhaustion.
To this end, we quantified the frequency of CD27(-)CD21(-) B-cells in healthy,
non-cirrhotic HCV-infected, and cirrhotic patients. We examined the expression of
putative inhibitory receptors, the proliferative and immunoglobulin-secreting
capacity of CD27/CD21-defined B-cell subsets upon B-cell receptor and/or CD40
stimulation. We found that CD27(-)CD21(-) B-cells are significantly increased in
frequency relative to healthy donors in HCV-infected patients. CD27(-)CD21(-)
B-cells were hypoproliferative relative to naïve and resting memory B-cells upon
agonistic stimulation, but retained similar capacity for antibody secretion.
CONCLUSION: CD27(-)CD21(-) tissue-like memory B-cells with exhausted
proliferation circulate at increased frequency in cirrhotic and non-cirrhotic
HCV-infected patients. This B-cell subset does not appear anergic, exhibiting
immunoglobulin-secreting capacity on CD40 agonism indistinguishable from other
CD27/CD21-defined B-cell subsets.