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CD 24 hi CD 27 + B cells from patients with allergic asthma have impaired regulatory activity in response to lipopolysaccharide
Summary Background Regulatory B cells have been identified that strongly reduce allergic and auto‐immune inflammation in experimental models by producing IL ‐10. Recently, several human regulatory B‐cell subsets with an impaired function in auto‐immunity have been described, but there is no informat...
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Published in: | Clinical and experimental allergy 2014-04, Vol.44 (4), p.517-528 |
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Main Authors: | , , , , , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Background
Regulatory B cells have been identified that strongly reduce allergic and auto‐immune inflammation in experimental models by producing
IL
‐10. Recently, several human regulatory B‐cell subsets with an impaired function in auto‐immunity have been described, but there is no information on regulatory B cells in allergic asthma.
Objective
In this study, the frequency and function of
IL
‐10 producing B‐cell subsets in allergic asthma were investigated.
Methods
Isolated peripheral blood B cells from 13 patients with allergic asthma and matched healthy controls were analyzed for the expression of different regulatory B‐cell markers. Next, the B cells were activated by lipopolysaccharide (
LPS
), CpG or through the B‐cell receptor, followed by co‐culture with endogenous memory
CD
4
+
T cells and house dust mite allergen DerP1.
Results
Lower number of
IL
‐10 producing B cells were found in patients in response to
LPS
, however, this was not the case when B cells were activated through the B‐cell receptor or by CpG. Further dissection showed that only the
CD
24
hi
CD
27
+
B‐cell subset was reduced in number and
IL
‐10 production to
LPS
. In response to DerP1,
CD
4
+
T cells from patients co‐cultured with
LPS
‐primed total B cells produced less
IL
‐10 compared to similar cultures from controls. These results are in line with the finding that sorted
CD
24
hi
CD
27
+
B cells are responsible for the induction of
IL
‐10
+
CD
4
+
T cells.
Conclusions
Taken together, these data indicate that
CD
24
hi
CD
27
+
B cells from allergic asthma patients produce less
IL
‐10 in response to
LPS
leading to a weaker
IL
‐10 induction in T cells in response to DerP1, which may play a role in allergic asthma. |
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ISSN: | 0954-7894 1365-2222 |
DOI: | 10.1111/cea.12238 |