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Overexpression of ROR γt under control of the CD 2 promoter induces polyclonal plasmacytosis and autoantibody production in transgenic mice
Retinoic acid related orphan receptor gamma‐t ( ROR γt) is known to be a master regulator of T h17‐cell development. In this study, we generated ROR γt‐overexpressing transgenic ( ROR γt T g) mice in which transgene expression was driven by the CD 2 promoter, and found that these mice developed poly...
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Published in: | European journal of immunology 2012-08, Vol.42 (8), p.1999-2009 |
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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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Summary: | Retinoic acid related orphan receptor gamma‐t (
ROR
γt) is known to be a master regulator of
T
h17‐cell development. In this study, we generated
ROR
γt‐overexpressing transgenic (
ROR
γt
T
g) mice in which transgene expression was driven by the
CD
2 promoter, and found that these mice developed polyclonal plasmacytosis and autoantibody production.
ROR
γt
T
g mice were generated on a
C
57
BL
/6 background, and also were intercrossed with
B
ALB/c mice.
B
ALB/c
F
1 (
B
ALB/
F
1)
ROR
γt
T
g mice developed massive polyclonal plasma‐cytosis, and had shorter life spans. Splenomegaly and infiltration of plasma cells into the lung were observed. Hyperglobulinemia, anti‐double‐stranded
DNA
antibodies, anti‐erythrocyte antibodies, and anti‐platelet antibodies were detected in
B
ALB/
F
1
ROR
γt
T
g mice. In the present study, polyclonal plasmacytosis in
B
ALB/
F
1
ROR
γt
T
g mice appeared to be due to the induction of excessive
IL
‐6 production by
IL
‐17. We detected increased numbers of
CD
11b
+
cells that produced
IL
‐6. We also generated
IL
‐6‐deficient
ROR
γt
T
g
B
ALB/
F
1 background mice, which displayed high levels of serum
IL
‐17, but did not develop severe hyperglobulinemia. Excessive
IL
‐6 production by several cell types, including macrophages, in
B
ALB/
F
1
ROR
γt
T
g mice, might effect the development of plasma‐cytosis. These results suggest that
ROR
γt plays important roles in the development of plasmacytosis and autoantibody production. |
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ISSN: | 0014-2980 1521-4141 |
DOI: | 10.1002/eji.201142250 |