Volume 19, No 8, Aug 2009
ISSN: 1001-0602
EISSN: 1748-7838 2018
impact factor 17.848*
(Clarivate Analytics, 2019)
Volume 19 Issue 8, August 2009: 962-972
ORIGINAL ARTICLES
Trichosanthin functions as Th2-type adjuvant in induction of allergic airway inflammation
Yuan Wang1, Kairui Mao1, Shuhui Sun2, Guomei Lin1, Xiaodong Wu1, Gang Yao1 and Bing Sun1,3,4
1Laboratory of Molecular Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
2Laboratory of Molecular Virology, Shanghai Medical School, Fudan University, Shanghai 200032, China
3Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200025, China
4E-institutes of Shanghai Universities Immunology Division, Shanghai 200025, China
Correspondence: Bing Sun, Gang Yao,(bsun@sibs.ac.cn; yaogang@sibs.ac.cn )
is important to understand the pathogenesis of asthma induced by natural allergens, which could exclude the interference of artificial adjuvant and provide insights of natural immune response in the disease. In the present study, we show that Trichosanthin (TCS) could induce airway inflammation even without the help of alum. Furthermore, TCS appeared capable of replacing alum to promote OVA-specific airway inflammation. TCS induced accumulation of IL-4-producing eosinophils in peritoneum at an early stage and the adjuvant function of TCS was eliminated by blockage of IL-4 at this stage. Finally, the eosinophils triggered by TCS from WT mice, but not from IL-4-deficient mice were shown to function as adjuvant for the induction of OVA-specific Th2 responses. Our data indicate that TCS is not only an allergen, but also a Th2-type adjuvant modulating the switching of immune responses to a Th2 pathway. This chain of events results from IL-4 production by eosinophils at an early stage of TCS-priming. In conclusion, TCS may be useful as a Th2 adjuvant, and innate immune cells, such as eosinophils, may be a good target to study the initiation of Th2 response.
is important to understand the pathogenesis of asthma induced by natural allergens, which could exclude the interference of artificial adjuvant and provide insights of natural immune response in the disease. In the present study, we show that Trichosanthi
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