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Activation of the TLR/MyD88/NF-κB Signal Pathway Contributes to Changes in IL-4 and IL-12 Production in Piglet Lymphocytes Infected with Porcine Circovirus Type 2 In Vitro
被引:36
作者:

Duan, Dianning
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Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China

Zhang, Shuxia
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Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China

Li, Xiaolin
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Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China

Guo, Hua
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Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China

Chen, Mengmeng
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Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China

Zhang, Yaqun
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Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China

Han, Junyuan
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Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China

Lv, Yingjun
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h-index: 0
机构:
Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China
机构:
[1] Nanjing Agr Univ, Coll Vet Med, Nanjing, Jiangsu, Peoples R China
来源:
关键词:
MULTISYSTEMIC WASTING SYNDROME;
NF-KAPPA-B;
SYNDROME PMWS;
ALVEOLAR MACROPHAGES;
PIGS;
APOPTOSIS;
PCV2;
INOCULATION;
INTERFERON;
DISEASE;
D O I:
10.1371/journal.pone.0097653
中图分类号:
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
Porcine circovirus type 2 (PCV2) causes immunosuppression in pigs. One causative factor is an imbalance in cytokine levels in the blood and lymphoid tissues. Many studies have reported changes in cytokine production, but the regulatory mechanisms involved have not yet been elucidated. In this study, we investigated alteration and regulation of IL-4 and IL-12 production in lymphocytes following incubation with PCV2 in vitro. The levels of IL-4 decreased and levels of IL-12 increased in lymphocyte supernatants, and the DNA-binding activity of NF-kappa B and the expression of p65 in the nucleus and p-I kappa B in the cytoplasm of lymphocytes increased after incubation with PCV2. However, these effects were reversed when lymphocytes were coincubated with PCV2 and the NF-kappa B inhibitor BAY11-7082. In addition, the expression of MyD88 protein increased and the expression of mRNA for the toll-like receptors (TLRs) TLR2, TLR3, TLR4 and TLR9 was upregulated when lymphocytes were incubated with PCV2. However, no change was seen in TLR7 and TLR8 mRNA expression. In conclusion, this study showed that PCV2 induced a decrease in IL-4 and an increase in IL-12 production in lymphocytes, and these changes were regulated by the TLR-MyD88-NF-kappa B signal pathway.
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