CN103820572A - 一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的试剂盒和方法 - Google Patents

一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的试剂盒和方法 Download PDF

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CN103820572A
CN103820572A CN201310737274.4A CN201310737274A CN103820572A CN 103820572 A CN103820572 A CN 103820572A CN 201310737274 A CN201310737274 A CN 201310737274A CN 103820572 A CN103820572 A CN 103820572A
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porcine circovirus
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张志刚
董剑辉
张文利
张晓杰
李爽
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Beijing Vicaren Biological Technology Co., Ltd.
Beijing University of Agriculture
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Abstract

本发明的一个目的是提供一种检测猪细小病毒和猪圆环病毒2型病毒的核苷酸引物,分别为PPVF、PPVR、PCV2F和PCV2R,其中序列PPVF和PPVR为检测猪细小病毒的正义引物和反义引物,序列PCV2F和PCV2R为检测猪圆环病毒2型的正义引物和反义引物。本发明提供的猪细小病毒和猪圆环病毒2型两重PCR检测方法,一次反应能同时检测出PPV和PCV2两种病毒,所用2对引物特异性较好,引物相互之间有较低的同源性及互补性,所述引物敏感性较好。该方法具有简便、快速、经济、高效等优势,利于临床的大量检测,在临床诊断上具有较好的应用前景。

Description

一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的试剂盒和方法
技术领域
本发明提供了一种检测猪细小病毒、猪圆环病毒2型病毒及其混合感染的试剂盒和方法,属于生物技术领域。 
技术背景
猪细小病毒(Porcine parvovirus,PPV)、猪圆环病毒2型病毒(Porcine circocirus type2,PCV2)是目前常见的引起猪繁殖障碍病的DNA病毒。目前, 
很多猪场都存在上述病毒引起的疾病,给养猪业造成巨大的经济损失。临床上常呈现混合感染,主要表现为受感染母猪产死胎、畸形胎、木乃伊胎及病弱仔猪,不容易区分。 
发明内容
本发明的一个目的是提供一种检测猪细小病毒和猪圆环病毒2型病毒的核 
苷酸引物,分别为PPVF、PPVR、PCV2F和PCV2R,其中序列PPVF和PPVR为检测猪细小病毒的正义引物和反义引物,序列PCV2F和PCV2R为检测猪圆环病毒2型的正义引物和反义引物。 
本发明的第二个目的是提供一种用于检测猪细小病毒和猪圆环病毒2型病 
毒的试剂盒,由以下组分组成:(1)DNA提取试剂为购自北京康为世纪生物技术有限公司的DNA提取试剂盒;(2)2×PCR Mix,包含终浓度为0.4mM的dNTP、4.0mM的MgSO4、80mM的KC1、20mM的Tris-C1和0.1U/μL的Taq DNA聚合酶;(3)引物混合液,含终浓度12μM的猪细小病毒正义引物和反义引物,同时含终浓度为10μM的猪圆环病毒2型正义引物和反义引物;(4)DNA阳性对照,包含35μg/mLPPV和30μg/mLPCV2;(5)阴性对照:DEPC水;(6)高压灭菌水; 
本发明的第三个目的是提供一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的方法,包括如下步骤: 
(1)提取样品总DNA; 
(2)用权利要求1中所述引物对待测样本进行PCR扩增,PCR反应体系为:2×PCRMix12.5μL、引物混合液2μL、模板1μL、高压灭菌水9.5μL,总体积25μL;扩增条件为94℃预变性5min,94℃变性30S,57℃退火30S,72℃延伸45S,循环35cycles,最后72℃延伸8min。同时设阴性对照和阳性对照,阳性对照含 
35μg/mLPPV和30μg/mLPCV2,阴性对照为DEPC水; 
(3)电泳; 
(4)结果分析。 
本发明的实验证明,本发明提供的猪细小病毒和猪圆环病毒2型两重PCR检测方法,一次反应能同时检测出PPV和PCV2两种病毒,所用2对引物特异性较好,引物相互之间有较低的同源性及互补性,所述引物敏感性较好。该方法具有简便、快速、经济、高效等优势,利于临床的大量检测,在临床诊断上具有较好的应用前景。 
附图说明
图1为PPV、PCV2两重PCR以及单项PCR电泳图结果 
图2为PPV、PCV2两重PCR特异性电泳图结果 
图3(3a、3b)为PPV、PCV2两重PCR敏感性电泳图结果 
具体实施方式
下述实施例中所使用的实验方法如无特殊说明,均为常规方法;所用的材料、试剂等,如无特殊说明,均可从商业途径得到。 
实施例1猪细小病毒(PPV)、猪圆环病毒2型病毒(PCV2)、两重PCR检测方法 建立。 
1引物设计:在GenBank中查找多个毒株,对其进行同源性分析,利用Primer5对上述保守区进行引物设计,对设计出来的两种病毒引物进行引物二聚体分析,以避免引物之间形成稳定的引物二聚体,并对每对引物的扩增序列进行同源性或互补性分析,避免它们之间有较高的同源性或互补性,从而确定2种病毒的引物序列,见表1。 
表1 
Figure 808773DEST_PATH_GSB0000123716410000031
2、PCR反应条件优化 
利用本试剂盒的DNA提取试剂分别提取猪细小病毒(PPV)和猪圆环病毒2型(PCV2)基因组DNA,提取方法参照DNA提取试剂盒操作说明进行。分别以PPV基因组DNA和PCV2基因组DNA和PPV+PCV2混合基因组DNA(体积比为1∶1)为模板,利用本试剂盒进行PCR扩增。所述试剂盒2xPCR Mix,包含终浓度为0.4mM的dNTP、4.0mM的MgSO4、80mM的KC1、20mM的Tris-C1和0.1U/μL的Taq DNA聚合酶;引物混合液,含终浓度12μM的猪细小病毒正义引物和反义引物,同时含终浓度为10μM的猪圆环病毒2型正义引物和反义引物;DNA阳性对照,包含35μg/mLPPV和30μg/mLPCV2;阴性对照为DEPC水;反应总体系为25μL,各试剂的用量如表2所示: 
表2 
编号 2xPCR Mix 引物混合液 模板 灭菌水
1 12.5μL 4μL 阳性对照试样2μL 6.5
2 12.5μL 4μL PPV DNA   2μL 6.5
3 12.5μL 4μL PCV2 DNA 2μL 6.5
4 12.5μL 4μL 灭菌水2μL 6.5
优化后的程序为:94℃预变性2min;94℃变性30s,57℃退火30s,72℃延伸45s,35个循环;72℃延伸8min,4℃保存。 
结果如图1所示,其中1为PPV+PCV2基因组DNA,2为PPV基因组DNA,3为PCV2基因组DNA,4为灭菌水作为空白对照。可以看出,1得到358bp和752bp产物,2得到358bp产物,3得到752bp产物,空白对照无扩增条带。 
分别将上述PCR产物送去测序,结果为:358bp的PCR产物的核苷酸序列为PPVGenbank号的KC969643.1的第248-605位核苷酸;752bp的PCR产物的核苷酸序列为PCV2的Genbank号的FJ667593.1的第177-928位核苷酸;因此扩增产物通过测序,其序列与GenBank中查出PCVII、PPV的已知序列比较,证实是目的基因。’ 
3、特异性检测 
分别检测上述涉及的PCR反应的引物PPVF、PPVR、PCV2F和PCV2R的特异性,方法如下: 
分别提取PRRSV(猪繁殖与呼吸综合征病毒)、CSFV(猪瘟病毒)、BVDV(牛病毒性腹泻病毒)、RV(猪轮状病毒)、TEGV(猪传染性胃肠炎病毒)、PEDV(猪流行性腹泻病毒)的RNA,反转录得到PRRSV的eDNA、CSFV的cDNA、BVDV的eDNA、RV的cDNA、TEGV的的cDNA、PEDV的cDNA;提取PCV2(猪圆环病毒2型)、PPV(猪细小病毒)、PRV(猪伪狂犬病毒)的DNA,得到PPVDNA、PCV2DNA和PRV DNA;分别以得到的eDNA和DNA为模板,本试剂盒的引物混合液为引物,按照步骤2中的PCR体系和程序进行扩增,结果如图2的1—9所示,其中1为PPV,2为PRRSV,3为CSFV,4为BVDV,5为RV,6为TEGV,7为PEDV,8为PRV,9为PCV2,可以看出,只有PPV和PCV2有目的条带,分别为358bp和785bp,其他均未见非特异性带,说明两套引物特异性高。 
4、敏感性检测 
通过分光光度计检测步骤2中得到的PPV基因DNA和PCV2基因DNA浓度,分别为1200μg/μL和1000μg/μL。将PPV基因DNA、PCV2基因DNA、PPV基因DNA和PCV2基因DNA混合液(体积比为1:1)进行10倍系列稀释后分别作为模板,以本试剂盒的引物混合液为引物,按照步骤2的体系和程序进行扩增。 
结果见图3a所示,1-6分别为PPV基因DNA的101-106倍稀释的模板;7-12分别为PCV2基因DNA的101-106倍稀释的模板;图3B所示1-6为PPV、PCV DNA混合液的101-106倍稀释的模板;可以看出,无论哪种模板,103倍稀释的模板有比较清晰地目的条带,104倍稀释的模板有比较弱的目的条带,稀释105倍及以上的模板已完全看不到目的条带。 
实验证明本发明的两重PCR可以检测到PPV基因DNA的最小浓度为 
1.2ng/μL,PCV2基因DNA的最小浓度为1.0ng/μL。 
5、重复性 
对PPV、PCV2两重PCR方法进行多次重复试验实验结果稳定。 
6临床样本检测 
利用本实验建立猪细小病毒和猪圆环病毒2型病毒PCR检测试剂盒,对从吉林和河北12个县市采集到的110份猪血清样品进行猪细小病毒和猪圆环病毒2型病毒的检测,同时设阴阳性对照。检测结果为:PPV阳性17份,阳性率为15.45%;PCV2阳性59份,阳性率为53.64%。 
序列如下: 
PPVF:CAGCAGCACCTAGAAGTGAA 
PPVR:GTTCCTGGGTGTTGGTCTCC 
PCV2F:TTTATTGTTGGCGAGGAGGGTA 
PCV2R:TCCGTGGATTGTTCTGTAGCAT 。
Figure ISA0000099639950000011
Figure ISA0000099639950000021

Claims (7)

1.一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的试剂盒和方法,其特征在于检测猪细小病毒和猪圆环病毒2型的核苷酸引物为PPVF、PPVR、PCV2F和PCV2R,其中序列PPVF和PPVR分别为检测猪细小病毒的正义引物和反义引物,序列PCV2F和PCV2R分别为检测猪圆环病毒2型的正义引物和反义引物。
2.根据权利要求1所述的一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的试剂盒和方法,其特征在于,所述的试剂盒由以下组分组成:
(1)DNA提取试剂;
(2)2×PCR Mix:由dNTP、MgSO4、KCl、Tris-Cl缓冲液和Taq DNA聚合酶等组成;
(3)引物混合液:内含终浓度为12μM的猪细小病毒正义引物和反义引物,同时含终浓度为10μM的猪圆环病毒2型正义引物和反义引物。
(4)DNA阳性对照;
(5)阴性对照:DEPC水;
(6)高压灭菌水;
3.根据权利要求2所述的试剂盒,其特征在于,所述DNA提取试剂为DNA提取试剂盒。
4.根据权利要求2所述的试剂盒,其特征在于,其中所述2×PCR Mix包含终浓度为0.4mM的dNTP、4.0mM的MgSO4、80mM的KCl、20mM的Tris-Cl和0.1U/μL的Taq DNA聚合酶,所述的检测猪细小病毒正义引物和反义引物终浓度均为12μM,所述的检测猪圆环病毒2型的正义引物和反义引物终浓度均为10μM。
5.根据权利要求2所述的试剂盒,其特征在于,其中所述阳性对照包含30μg/mLPPV和30μg/mLPCV2。
6.一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的方法,其特征在于所述的方法包括如下步骤:
(1)提取样品总DNA;
(2)用权利要求1中所述引物对待测样本进行PCR扩增;
(3)电泳;
(4)结果分析。
7.根据权利要求6所述的方法,其特征在于,PCR扩增反应体系为:2×PCR Mix12.5μL、引物混合液2μL、模板1μL、高压灭菌水9.5μL,总体积25μL;扩增条件为94℃预变性5min,94℃变性30S,57℃退火30S,72℃延伸45S,循环35cycles;最后72℃延伸8min。
CN201310737274.4A 2013-12-24 2013-12-24 一种用于检测猪细小病毒和猪圆环病毒2型病毒及其混合感染的试剂盒和方法 Pending CN103820572A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114480743A (zh) * 2022-03-15 2022-05-13 龙岩学院 同时检测猪圆环病毒2型和猪细小病毒2型的引物和方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101260442A (zh) * 2007-03-09 2008-09-10 中国农业科学院哈尔滨兽医研究所 检测猪圆环病毒、猪细小病毒、猪伪狂犬病毒、猪瘟病毒的多重实时荧光定量pcr方法
CN101565761A (zh) * 2009-05-11 2009-10-28 中国农业科学院兰州兽医研究所 一种用于检测猪细小病毒、猪圆环病毒2型、猪伪狂犬病毒及其混合感染的试剂盒和方法
CN102071259A (zh) * 2009-11-25 2011-05-25 河南农业大学 猪伪狂犬病毒、猪细小病毒与猪圆环病毒2型多重实时荧光pcr检测引物及方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101260442A (zh) * 2007-03-09 2008-09-10 中国农业科学院哈尔滨兽医研究所 检测猪圆环病毒、猪细小病毒、猪伪狂犬病毒、猪瘟病毒的多重实时荧光定量pcr方法
CN101565761A (zh) * 2009-05-11 2009-10-28 中国农业科学院兰州兽医研究所 一种用于检测猪细小病毒、猪圆环病毒2型、猪伪狂犬病毒及其混合感染的试剂盒和方法
CN102071259A (zh) * 2009-11-25 2011-05-25 河南农业大学 猪伪狂犬病毒、猪细小病毒与猪圆环病毒2型多重实时荧光pcr检测引物及方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
樊振华: "猪细小病毒和猪圆环病毒2型多重PCR检测方法的建立与应用", 《山西农业科学》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114480743A (zh) * 2022-03-15 2022-05-13 龙岩学院 同时检测猪圆环病毒2型和猪细小病毒2型的引物和方法

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