Abstract
Autoimmune disorders are induced by various environmental and occupational substances. Among the most typical factors involving these substances, it is well known that silica exposure causes not only pulmonary fibrosis known as silicosis, but also induces autoimmune diseases such as rheumatoid arthritis known as Caplan's syndrome, systemic sclerosis, systemic lupus erythematosus, and anti-neutrophil cytoplasmic autoantibody (ANCA)-related vasculitis/nephritis. To investigate the immunological effects of silica, a focus on the occurrence of autoimmune dysfunction may clarify these autoimmune diseases and develop effective tools for observing silicosis patients (SIL). In this review, our investigation concerns the autoantibodies found in SIL, alteration of CD95/Fas and related molecules in SIL, case-oriented and in vitro analyses of silica-induced activation of responder and regulatory T cells, and supposed mechanisms of reduction of CD4+25+FoxP3+ regulatory T cells (Treg) in SIL. Further studies are required to investigate Th17 and the interaction with Treg in SIL to understand the cellular and molecular mechanisms of environmental and occupational autoimmune disorders.
| Original language | English |
|---|---|
| Pages (from-to) | 743-748 |
| Number of pages | 6 |
| Journal | Immunobiology |
| Volume | 217 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 2012 |
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Keywords
- Autoimmune
- CD95/Fas
- Regulatory t cell
- Silica
- Systemic sclerosis
ASJC Scopus subject areas
- Immunology
- Immunology and Allergy
- Hematology
Cite this
Environmental factors producing autoimmune dysregulation - Chronic activation of T cells caused by silica exposure. / Lee, Suni; Hayashi, Hiroaki; Maeda, Megumi; Chen, Ying; Matsuzaki, Hidenori; Takei-Kumagai, Naoko; Nishimura, Yasumitsu; Fujimoto, Wataru; Otsuki, Takemi.
In: Immunobiology, Vol. 217, No. 7, 07.2012, p. 743-748.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Environmental factors producing autoimmune dysregulation - Chronic activation of T cells caused by silica exposure
AU - Lee, Suni
AU - Hayashi, Hiroaki
AU - Maeda, Megumi
AU - Chen, Ying
AU - Matsuzaki, Hidenori
AU - Takei-Kumagai, Naoko
AU - Nishimura, Yasumitsu
AU - Fujimoto, Wataru
AU - Otsuki, Takemi
PY - 2012/7
Y1 - 2012/7
N2 - Autoimmune disorders are induced by various environmental and occupational substances. Among the most typical factors involving these substances, it is well known that silica exposure causes not only pulmonary fibrosis known as silicosis, but also induces autoimmune diseases such as rheumatoid arthritis known as Caplan's syndrome, systemic sclerosis, systemic lupus erythematosus, and anti-neutrophil cytoplasmic autoantibody (ANCA)-related vasculitis/nephritis. To investigate the immunological effects of silica, a focus on the occurrence of autoimmune dysfunction may clarify these autoimmune diseases and develop effective tools for observing silicosis patients (SIL). In this review, our investigation concerns the autoantibodies found in SIL, alteration of CD95/Fas and related molecules in SIL, case-oriented and in vitro analyses of silica-induced activation of responder and regulatory T cells, and supposed mechanisms of reduction of CD4+25+FoxP3+ regulatory T cells (Treg) in SIL. Further studies are required to investigate Th17 and the interaction with Treg in SIL to understand the cellular and molecular mechanisms of environmental and occupational autoimmune disorders.
AB - Autoimmune disorders are induced by various environmental and occupational substances. Among the most typical factors involving these substances, it is well known that silica exposure causes not only pulmonary fibrosis known as silicosis, but also induces autoimmune diseases such as rheumatoid arthritis known as Caplan's syndrome, systemic sclerosis, systemic lupus erythematosus, and anti-neutrophil cytoplasmic autoantibody (ANCA)-related vasculitis/nephritis. To investigate the immunological effects of silica, a focus on the occurrence of autoimmune dysfunction may clarify these autoimmune diseases and develop effective tools for observing silicosis patients (SIL). In this review, our investigation concerns the autoantibodies found in SIL, alteration of CD95/Fas and related molecules in SIL, case-oriented and in vitro analyses of silica-induced activation of responder and regulatory T cells, and supposed mechanisms of reduction of CD4+25+FoxP3+ regulatory T cells (Treg) in SIL. Further studies are required to investigate Th17 and the interaction with Treg in SIL to understand the cellular and molecular mechanisms of environmental and occupational autoimmune disorders.
KW - Autoimmune
KW - CD95/Fas
KW - Regulatory t cell
KW - Silica
KW - Systemic sclerosis
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U2 - 10.1016/j.imbio.2011.12.009
DO - 10.1016/j.imbio.2011.12.009
M3 - Article
VL - 217
SP - 743
EP - 748
JO - Immunobiology
JF - Immunobiology
SN - 0171-2985
IS - 7
ER -