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一株鸽Ⅰ型副粘病毒的分离鉴定及F基因遗传进化分析 被引量:2
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作者 李祥 孙静 +6 位作者 智敏 杨晓宇 付恬 吕欣孺 马沛然 杨思远 柴洪亮 《野生动物学报》 北大核心 2019年第2期440-444,共5页
东北某动物园鸽群发生异常死亡,采集病死鸽脏器,通过SPF鸡胚进行病毒分离,采用血凝试验和RT-PCR试验,鉴定结果显示尿囊液呈Ⅰ型副粘病毒核酸阳性。通过对F基因进行测序和遗传进化分析,结果表明,分离株BS0904裂解位点基序为112RRQKRF117... 东北某动物园鸽群发生异常死亡,采集病死鸽脏器,通过SPF鸡胚进行病毒分离,采用血凝试验和RT-PCR试验,鉴定结果显示尿囊液呈Ⅰ型副粘病毒核酸阳性。通过对F基因进行测序和遗传进化分析,结果表明,分离株BS0904裂解位点基序为112RRQKRF117,符合NDV强毒株的典型分子特征;分离株F基因与疫苗株LaS ota、B1、Clone 30、VG/GA、V-4、Mukteswar及经典强毒株F48E9的核苷酸同源性较低,仅为84. 2%—85. 8%;而与2011—2013年在中国多个地区鸽中所分离毒株核苷酸同源性则高达98. 8%—99. 9%,并且在遗传进化树上位于同一分支,属于ClassⅡ,基因型为Ⅵb-EU/re。该基因型毒株在中国鸽群中有较长时间、较大范围的流行传播,且与疫苗株遗传进化关系较远,说明疫苗株不能对鸽群提供有效的免疫保护,因此为了更好地对鸽群进行Ⅰ型副粘病毒的有效防控,需要针对Ⅵb基因型研发新疫苗。 展开更多
关键词 型副粘病毒 F基因 Ⅵb基因型 遗传进化分析
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多聚酶链反应区分血清Ⅰ型MDV强弱毒株 被引量:1
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作者 卢春 陈溥言 蔡宝祥 《中国兽医学报》 CAS CSCD 1996年第3期248-251,共4页
选用血清Ⅰ型马立克氏病病毒(MDV_1)基因组中位于132bp正向重复序列两侧的2段寡聚核苷酸为多聚酶链反应(PCR)的引物,分别对Ⅰ型MDV强毒株(京-1株)和弱毒株(Md11/75C株)的核酸进行基因扩增。结果显... 选用血清Ⅰ型马立克氏病病毒(MDV_1)基因组中位于132bp正向重复序列两侧的2段寡聚核苷酸为多聚酶链反应(PCR)的引物,分别对Ⅰ型MDV强毒株(京-1株)和弱毒株(Md11/75C株)的核酸进行基因扩增。结果显示:该弱毒株核酸基因中含6个或更多个拷贝数的132bp正向重复序列,而强毒株核酸基因中仅含2个,相同引物对Ⅱ型、Ⅲ型MDV(SB-1株,Fc126株)和禽网状内皮组织增生病病毒(REV)核酸作PCR扩增,未检出任何核酸片段。 展开更多
关键词 马立克氏病病毒 血清 多聚酶链反应 毒株
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In silico prediction of monovalent and chimeric tetravalent vaccines for prevention and treatment of dengue fever
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作者 Vijayakumar Subramaniyan Ramesh Venkatachalam +1 位作者 Prabhu Srinivasan Manogar Palani 《The Journal of Biomedical Research》 CAS CSCD 2018年第3期222-236,共15页
Reverse vaccinology method was used to predict the monovalent peptide vaccine candidate to produce antibodies for therapeutic purpose and to predict tetravalent vaccine candidate to act as a common vaccine to cover al... Reverse vaccinology method was used to predict the monovalent peptide vaccine candidate to produce antibodies for therapeutic purpose and to predict tetravalent vaccine candidate to act as a common vaccine to cover all the dengue virus serotypes. Envelope(E)-proteins of DENV-1-4 serotypes were used for vaccine prediction using NCBI,Uniprot/Swissprot, Swiss-prot viewer, VaxiJen V2.0, TMHMM, BCPREDS, Propred-1, Propred and MHC Pred. Eproteins of DENV-1-4 serotypes were identified as antigen from which T cell epitopes, through B cell epitopes, were predicted to act as peptide vaccine candidates. Each selected T cell epitope of E-protein was confirmed to act as vaccine and to induce complementary antibody against particular serotype of dengue virus. Chimeric tetravalent vaccine was formed by the conjugation of four vaccines, each from four dengue serotypes to act as a common vaccine candidate for all the four dengue serotypes. It can be justifiably concluded that the monovalent 9-mer T cell epitope for each DENV serotype can be used to produce specific antibody against dengue virus and a chimeric common tetravalent vaccine candidate to yield a comparative vaccine to cover any of the four dengue virus serotype. This vaccine is expected to be highly immunogenic against dengue fever. 展开更多
关键词 dengue serotypes dengue virus vaccine E-proteins MHC and
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