4.6

CiteScore

2.2

Impact Factor
  • ISSN 1674-8301
  • CN 32-1810/R
Hong Li, Chunyan Gu, Yongya Ren, Yang Dai, Xiaojuan Zhu, Jing Xu, Yuhua Li, Zhenning Qiu, Jin Zhu, Yinchang Zhu, Xiaohong Guan, Zhenqing Feng. The efficacy of NP11-4-derived immunotoxin scFv-artesunate in reducing hepatic fibrosis induced by Schistosoma japonicum in mice[J]. The Journal of Biomedical Research, 2011, 25(2): 148-154. DOI: 10.1016/S1674-8301(11)60019-5
Citation: Hong Li, Chunyan Gu, Yongya Ren, Yang Dai, Xiaojuan Zhu, Jing Xu, Yuhua Li, Zhenning Qiu, Jin Zhu, Yinchang Zhu, Xiaohong Guan, Zhenqing Feng. The efficacy of NP11-4-derived immunotoxin scFv-artesunate in reducing hepatic fibrosis induced by Schistosoma japonicum in mice[J]. The Journal of Biomedical Research, 2011, 25(2): 148-154. DOI: 10.1016/S1674-8301(11)60019-5

The efficacy of NP11-4-derived immunotoxin scFv-artesunate in reducing hepatic fibrosis induced by Schistosoma japonicum in mice

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This work was supported by a grant from the National High Tech-nology Research and Development Program of China ("863"Program No.2006AA02Z415).

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  • Schistosomiasis is one of the most prevalent parasitic diseases in China, and hepatic fibrosis caused by schis-tosome infection is the principal cause of death. The aim of this study was to evaluate the efficacy of NP11-4-derived immunotoxin scFv-artesunate on Schistosoma japonicum-induced hepatic fibrosis. A single-chain variable fragment (scFv) was generated from the murine anti-Schistosoma japonicum (S. japanicum) monoclonal antibody NP11-4. The scFv was expressed as a soluble protein and purified by Ni-affinity chromatography. After conjuga-tion with artesunate, the binding ability with soluble egg antigens (SEA) was determined by an enzyme-linked immunosorbent assay (ELISA). The biological activity of purified scFv, scFv-artesunate (immunotoxin), and artesunate was detected in vivo. Image-Pro Plus software was used to analyze the size of egg granuloma and the extent of liver fibrosis. The recombinant scFv expession vector was constructed and expressed successfully. Af-ter purification by a His-trap Ni-affinity column, the scFv yield was approximately 0.8 mg/L of culture medium. ELISA results showed that chemical conjugation did not affect the binding activity of the immunotoxin. Our ani-mal experiments indicated that the immunotoxin could significantly reduce the size of egg granuloma in the liver and inhibit hepatic fibrosis. The immunotoxin could be used as a promising candidate in the targeted therapy of S. japonicum-induced hepatic fibrosis.
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