Construction and analysis of an experimental Streptococcus iniae DNA vaccine

doi:10.1016/j.vaccine.2010.03.071

IOCAS-IR > 实验海洋生物学重点实验室

	Construction and analysis of an experimental Streptococcus iniae DNA vaccine
	Sun, Yun 1,2; Hu, Yong-hua 1; Liu, Chun-sheng 1,2; Sun, Li 1
	2010-05-21
发表期刊	VACCINE
ISSN	0264-410X
卷号	28 期号:23 页码:3905-3912
文章类型	Article
摘要	Streptococcus iniae is a severe aquaculture pathogen that can also infect humans and animal. A putative secretory antigen, Slat 0, was identified from a pathogenic S. iniae strain by in vivo-induced antigen technology. Using turbot as an animal model, the immunoprotective effect of Sia10 was examined as a DNA vaccine in the form of plasmid pSia10, which expresses sia10 under the cytomegalovirus immediate-early promoter. In fish vaccinated with pSia10, transcription of sia10 was detected in muscle, liver, spleen, and kidney at 7, 14, 21, 28, 35, 42, and 49 days post-vaccination. In addition, production of Sia10 protein was also detected in the muscle tissues of pSia10-vaccinated fish. Fish vaccinated with pSia10 exhibited a relative percent survival (RPS) of 73.9% and 92.3%, respectively, when challenged with high and low doses (producing a cumulative mortality of 92% and 52%, respectively, in the control groups) of S. iniae. Immunological and transcriptional analyses showed that vaccination with pSia10(i) induced much stronger chemiluminescence response and significantly higher levels of nitric oxide production and acid phosphatase activity in head kidney macrophages; (ii) caused the production of specific serum antibodies, which afforded apparent immunoprotection when transferred passively into naive fish; and (iii) upregulated the expression of the genes encoding proteins that are possibly involved in both innate and adaptive immune responses. Taken together, these results indicated that pSia10 is an effective vaccine candidate and may be used in the control of S. iniae infection in aquaculture. (C) 2010 Elsevier Ltd. All rights reserved.; Streptococcus iniae is a severe aquaculture pathogen that can also infect humans and animal. A putative secretory antigen, Slat 0, was identified from a pathogenic S. iniae strain by in vivo-induced antigen technology. Using turbot as an animal model, the immunoprotective effect of Sia10 was examined as a DNA vaccine in the form of plasmid pSia10, which expresses sia10 under the cytomegalovirus immediate-early promoter. In fish vaccinated with pSia10, transcription of sia10 was detected in muscle, liver, spleen, and kidney at 7, 14, 21, 28, 35, 42, and 49 days post-vaccination. In addition, production of Sia10 protein was also detected in the muscle tissues of pSia10-vaccinated fish. Fish vaccinated with pSia10 exhibited a relative percent survival (RPS) of 73.9% and 92.3%, respectively, when challenged with high and low doses (producing a cumulative mortality of 92% and 52%, respectively, in the control groups) of S. iniae. Immunological and transcriptional analyses showed that vaccination with pSia10(i) induced much stronger chemiluminescence response and significantly higher levels of nitric oxide production and acid phosphatase activity in head kidney macrophages; (ii) caused the production of specific serum antibodies, which afforded apparent immunoprotection when transferred passively into naive fish; and (iii) upregulated the expression of the genes encoding proteins that are possibly involved in both innate and adaptive immune responses. Taken together, these results indicated that pSia10 is an effective vaccine candidate and may be used in the control of S. iniae infection in aquaculture. (C) 2010 Elsevier Ltd. All rights reserved.
关键词	Streptococcus Iniae Dna Vaccine Immune Genes Passive Immunization
学科领域	Immunology ; Medicine, Research & Experimental
DOI	10.1016/j.vaccine.2010.03.071
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000278985600006
引用统计	被引频次：46[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5924
专题	实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Sun, Yun,Hu, Yong-hua,Liu, Chun-sheng,et al. Construction and analysis of an experimental Streptococcus iniae DNA vaccine[J]. VACCINE,2010,28(23):3905-3912.
APA	Sun, Yun,Hu, Yong-hua,Liu, Chun-sheng,&Sun, Li.(2010).Construction and analysis of an experimental Streptococcus iniae DNA vaccine.VACCINE,28(23),3905-3912.
MLA	Sun, Yun,et al."Construction and analysis of an experimental Streptococcus iniae DNA vaccine".VACCINE 28.23(2010):3905-3912.

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