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Construction of an adeno-associated viral vector serotype 2/1 containing human interleukin-10 and its expression in donor liver
Xin-Yu Zhang, Hong-Chi Jiang, Bei Sun, Ling-Wang Zhou, Sheng Tai, Zhi-Dong Wang, Shi-Bo Sun, De-Quan Wu, De-En Han
Xin-Yu Zhang, Sheng Tai, Zhi-Dong Wang, Shi-Bo Sun, De-Quan Wu, De-En Han, the First Department of General Surgery, the Second Clinical Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China
Hong-Chi Jiang, Bei Sun, Department of General Surgery, the First Clinical Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China
Ling-Wang Zhou, Endemic Disease Branch, Chinese Center for Disease Control, Harbin 150086, Heilongjiang Province, China
Supported by: National Natural Science Foundation of China, No. 30100177, and No. 30400416.
Correspondence to: Xin-Yu Zhang, the First Department of General Surgery, the Second Clinical Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China. xinyuzhang3052000@yahoo.com.cn
Received: April 4, 2005 Revised: April 6, 2005 Accepted: April 9, 2005 Published online: June 28, 2005
AIM: To construct an adeno-associated viral vector serotype 2/1 (AAV2/1) containing human interleukin-10 (hIL-10) gene and to observe its expression in donor liver.
METHODS: hIL-10cDNA amplified by reverse transcription polymerase chain reaction (RT-PCR) from human peripheral blood mononuclear cells was cloned into vector pMD18-T. After confirming the sequence, hIL-10cDNA was isolated and inserted into eukaryotic expression vector pSNAV. The recombinant plasmid pSNAV-hIL-10 was transfected into BHK21 cells. BHK21 cells which contained ITR-hIL-10-ITR were obtained by G418 screening. Then the cells were transfected with rHSV/r2c1 containing rep2-cap1 gene. The cells were cultured and purified to obtain rAAV2/1-hIL-10. The expression of hIL-10 gene was detected after this vector was transfer into donor liver in vivo.
RESULTS: The sequence of cloned hIL-10cDNA was identical with that published on GenBank. A new adeno-associated virus vector containing hIL-10cDNA was constructed. And the transcription and expression of hIL-10 were detected in donor liver for 24 weeks. hIL-10 was significantly expressed in test group than that in empty and rAAV2/1-GFP controls 24 wk after transferred (219.15±45.83 ng/L vs 40.02, 38.64 ng/L, P<0.05).
CONCLUSION: The adeno-associated viral vector serotype 2/1 of hIL-10 is successfully established, which provides the basis for applying IL-10 in clinical organ transplantation.
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