CN104388582A - A型通用流感病毒的数字pcr检测试剂盒及检测方法 - Google Patents

A型通用流感病毒的数字pcr检测试剂盒及检测方法 Download PDF

Info

Publication number
CN104388582A
CN104388582A CN201410592623.2A CN201410592623A CN104388582A CN 104388582 A CN104388582 A CN 104388582A CN 201410592623 A CN201410592623 A CN 201410592623A CN 104388582 A CN104388582 A CN 104388582A
Authority
CN
China
Prior art keywords
digital pcr
pcr detection
detection kit
primer
specific probe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410592623.2A
Other languages
English (en)
Inventor
雷永良
刘敏
陈秀英
王晓光
叶灵
叶碧峰
梅建华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201410592623.2A priority Critical patent/CN104388582A/zh
Publication of CN104388582A publication Critical patent/CN104388582A/zh
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/70Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving virus or bacteriophage
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/68Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
    • C12Q1/6844Nucleic acid amplification reactions
    • C12Q1/686Polymerase chain reaction [PCR]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Immunology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biophysics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Genetics & Genomics (AREA)
  • Virology (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

一种A型通用流感病毒的数字PCR检测试剂盒,包括逆转录酶、数字PCR缓冲液PCR MasterMix、A型流感病毒基因标准品,数字PCR检测试剂盒还包括上游引物、下游引物和特异性探针,上游引物A-FP:5’-GACCRATCCTGTCACCTCTGAC-3’;下游引物A-RP:5’-AGGGCATTYTGGACAAAKCGTCTA-3’;特异性探针A-P:5’-FAM-TGCAGTCCTCGCTCACTGGGCACG-BHQ1-3’,其中FAM为荧光报告基团,BHQ1为荧光淬灭基团;并采用数字PCR检测方法,方法简单,时间快结果准确。

Description

A型通用流感病毒的数字PCR检测试剂盒及检测方法
技术领域
本发明涉及一种A型通用流感病毒的数字PCR检测试剂盒机检测方法,可应用于A型通用流感病毒引起的实验室应急检测。
背景技术
目前,原有的定量PCR对原有的样本核酸只能进行相对定量,需要依靠标准曲线或参照基因来测定核酸量,是对起始样品的绝对定量。依靠Ct值常不能很好分辨:拷贝数变异、突变检测、基因相对表达研究(如等位基因不平衡表达)、二代测序结果验证、miRNA表达分析、单细胞基因表达分析等。而目前的荧光检测方法周期长,且对病毒是否为阳性的检测存在不确定结果,导致多次检测,或检测结果不准确。
发明内容
本发明要解决上述现有技术存在的问题,提供一种能够直接数出DNA分子的个数的方法,大大提高了检测灵敏度、精确性,适合重大传染病的早期筛查。
本发明解决其技术问题采用的技术方案:这种A型通用流感病毒的数字PCR检测试剂盒,包括逆转录酶、数字PCR缓冲液PCRMasterMix、A型流感病毒基因标准品,数字PCR检测试剂盒还包括上游引物、下游引物和特异性探针,上游引物、下游引物和特异性探针序列如下:
上游引物A-FP:5’-GACCRATCCTGTCACCTCTGAC-3’;
下游引物A-RP:5’-AGGGCATTYTGGACAAAKCGTCTA-3’;
特异性探针A-P:5’-FAM-TGCAGTCCTCGCTCACTGGGCACG-BHQ1-3’;
其中FAM为荧光报告基团,BHQ1为荧光淬灭基团;
其中A型流感病毒基因标准品序列如下:
GACCAATCCTGTCACCTCTGACTAGGGGGATTTTGGGATTTGTATTCACGCTCACCGTGCCCAGTGAGCGAGGACTGCAGCGTAGACGCTTTGTCCAAAATGCCCT。
其中数字PCR检测试剂盒中组分含有:
这种A型通用流感病毒的数字PCR检测方法,按照以下步骤进行:
(1)打开两份病毒核酸样品放入试管中,分别放入水浴42℃,金属浴65℃中,提取病毒核酸待检样本RNA;
(2)在试管中加入10ul的逆转录酶,10ul的逆转录酶由5ul的RNA模版、3ul的dH2O、1ul的Oligo或Random6引物、1ul的dNTP组成,将待检样本RNA逆转录为cDNA;
(3)在65℃环境中放置5min,然后在冰上快速冷却;该步通过RNA模板变性增强反转录效果
(4)加入4.5ul的dH2O、4ul的5*buffer、1ul的RTase和0.5ul的TNase抑制剂;
(5)轻轻混合均匀,在42℃的环境中放置30~60min;
(6)在95℃5min灭活酶,冰中保存;
(7)体系加入样本模板cDNA,每个20ul反应体系中含10ul数字PCR缓冲液PCRMasterMix,250nM探针,900nM引物,反应温度为:先95℃10min,再94℃30s→58℃60s,这样不停地循环变换温度40次;然后放在98℃的温度下10min,4℃保存或分析。温度变换的作用是荧光信号嵌入到病毒核酸中,使紫外读取仪能识别病毒,如果是阴性样品,随着仪器温度的升降,探针中荧光信号并不能嵌入,所以仪器判读结果为无信号。
(8)通过仪器读取20000个微孔中的荧光值。
这种数字PCR原理是微滴化处理,将每个样品分形成20,000个液滴,主要采用当前分析化学热门研究领域的微流控或微滴化方法,将大量稀释后的核酸溶液分散至芯片的微反应器孔中,每个反应器的核酸模板数少于或者等于1个。这样经过PCR循环之后,有一个核酸分子模板的反应器就会给出荧光信号,没有模板的反应器就没有荧光信号。根据相对比例和反应器的体积,就可以推算出原始溶液的核酸浓度。
为了进一步完善PCR仪器对于检测病毒量少的样本,ct值介于30~40之间的阳性不确定情况,本实验大大提高微量检测能力,进一步完善检测下限,给出更可靠的数据,进一步完善检测精确度,使样本核酸载量不再依靠标准品来推算,避免得出结果值波动幅度,明确定量样品中的核酸数量。
本发明有益的效果是:本发明提供的检测试剂和方法不但对于A型通用流感病毒灵敏度高,而且检测快速(通常只需4-5小时),能够及时满足疾病防控需求,提高检测灵敏度、可重复性。实验结果变异系数CV值小于10%,实验做了40份标本,均取得明显的效果。可以弥补荧光定量PCR检测限不足,筛查并快速判定可疑样本。
具体实施方式
下面结合实施例对本发明作进一步说明:
这种A型通用流感病毒的数字PCR检测试剂盒,包括逆转录酶、数字PCR缓冲液PCRMasterMix、A型流感病毒基因标准品,数字PCR检测试剂盒还包括上游引物、下游引物和特异性探针,上游引物、下游引物和特异性探针序列如下:
上游引物A-FP:5’-GACCRATCCTGTCACCTCTGAC-3’;
下游引物A-RP:5’-AGGGCATTYTGGACAAAKCGTCTA-3’;
特异性探针A-P:5’-FAM-TGCAGTCCTCGCTCACTGGGCACG-BHQ1-3’,
其中FAM为荧光报告基团,BHQ1为荧光淬灭基团;
其中A型流感病毒基因标准品序列如下:
GACCAATCCTGTCACCTCTGACTAGGGGGATTTTGGGATTTGTATTCACGCTCACCGTGCCCAGTGAGCGAGGACTGCAGCGTAGACGCTTTGTCCAAAATGCCCT。
其中数字PCR检测试剂盒中组分含有:
这种A型通用流感病毒的数字PCR检测方法,按照以下步骤进行:
(1)打开两份病毒核酸样品放入试管中,分别放入水浴42℃,金属浴65℃中,提取待检样本RNA;
(2)在试管中加入10ul的逆转录酶,10ul的逆转录酶由5ul的RNA模版、3ul的dH2O、1ul的Oligo或Random6引物、1ul的dNTP组成,将待检样本RNA逆转录为cDNA;
(3)在65℃环境中放置5min,然后在冰上快速冷却;
(4)加入4.5ul的dH2O、4ul的5*buffer、1ul的RTase和0.5ul的TNase抑制剂;
(5)轻轻混合均匀,在42℃的环境中放置30~60min;
(6)在95℃5min灭活酶,冰中保存。
(7)体系加入样本模板cDNA,每个20ul反应体系中含10ul数字PCR缓冲液PCRMasterMix,250nM探针,900nM引物,反应温度为:先95℃10min,再94℃30s→58℃60s,这样不停地循环变换温度40次;然后放在98℃的温度下10min,4℃保存或分析。
(8)通过仪器读取20000个微孔中的荧光值。仪器购自上海thermofisher公司,型号为QuantStudio3D。
标本数40份,结果对于病毒载量大于200c/ul的样品,数字PCR方法与荧光定量PCR方法结果一致性为98%,对于病毒载量小于200c/ul的样品,荧光定量PCR方法ct值介于32~40之间,判定样品可疑。数字PCR方法可以精确计算出样本中的病毒载量。
参照附表:本实施例中,咽拭子40个
通过数字PCR方法检测出来的数据,可以精确计算出样本中的病毒载量,从而可以明确确定病毒是否为阳性,不存在不确定结果。
虽然本发明已通过参考优选的实施例进行了描述,但是,本专业普通技术人员应当了解,在权利要求书的范围内,可作形式和细节上的各种各样变化。

Claims (3)

1.一种A型通用流感病毒的数字PCR检测试剂盒,包括逆转录酶、数字PCR缓冲液PCRMasterMix、A型流感病毒基因标准品,其特征是:所述数字PCR检测试剂盒还包括上游引物、下游引物和特异性探针,所述上游引物、下游引物和特异性探针序列如下:
上游引物A-FP:5’-GACCRATCCTGTCACCTCTGAC-3’;
下游引物A-RP:5’-AGGGCATTYTGGACAAAKCGTCTA-3’;
特异性探针A-P:5’-FAM-TGCAGTCCTCGCTCACTGGGCACG-BHQ1-3’,
其中FAM为荧光报告基团,BHQ1为荧光淬灭基团;
所述A型流感病毒基因标准品序列如下:
GACCAATCCTGTCACCTCTGACTAGGGGGATTTTGGGATTTGTATTCACGCTCACCGTGCCCAGTGAGCGAGGACTGCAGCGTAGACGCTTTGTCCAAAATGCCCT。
2.根据权利要求1所述的A型通用流感病毒的数字PCR检测试剂盒,其特征是:所述数字PCR检测试剂盒中组分含有:
3.一种A型通用流感病毒的数字PCR检测方法,按照以下步骤进行:
(1)打开两份病毒核酸样品放入试管中,分别放在水浴42℃、金属浴65℃中,提取病毒核酸待检样本RNA;
(2)在试管中加入10ul的逆转录酶,10ul的逆转录酶由5ul的RNA模版、3ul的dH2O、1ul的Oligo或Random6引物、1ul的dNTP组成,将待检样本RNA逆转录为cDNA;
(3)在65℃环境中放置5min,然后在冰上快速冷却;
(4)加入4.5ul的dH2O、4ul的5*buffer、1ul的RTase和0.5ul的TNase抑制剂;
(5)轻轻混合均匀,在42℃的环境中放置3060min;
(6)在95℃5min灭活酶,冰中保存;
(7)体系加入样本模板cDNA,每个20ul反应体系中含10ul数字PCR缓冲液PCRMasterMix,250nM探针,900nM引物,反应温度为:先95℃10min,再94℃30s→58℃60s,这样不停地循环变换温度40次;然后放在98℃的温度下10min,4℃保存或分析;
(8)通过仪器读取20000个微孔中的荧光值。
CN201410592623.2A 2014-10-29 2014-10-29 A型通用流感病毒的数字pcr检测试剂盒及检测方法 Pending CN104388582A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410592623.2A CN104388582A (zh) 2014-10-29 2014-10-29 A型通用流感病毒的数字pcr检测试剂盒及检测方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410592623.2A CN104388582A (zh) 2014-10-29 2014-10-29 A型通用流感病毒的数字pcr检测试剂盒及检测方法

Publications (1)

Publication Number Publication Date
CN104388582A true CN104388582A (zh) 2015-03-04

Family

ID=52606538

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410592623.2A Pending CN104388582A (zh) 2014-10-29 2014-10-29 A型通用流感病毒的数字pcr检测试剂盒及检测方法

Country Status (1)

Country Link
CN (1) CN104388582A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113186353A (zh) * 2021-05-28 2021-07-30 杭州晶佰生物技术有限公司 针对c型逆转录病毒的数字pcr检测用引物及检测方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110028188A (ko) * 2009-09-11 2011-03-17 주식회사 엘지생명과학 실시간 다중 역전사 중합효소 연쇄반응에 의한 일반 인플루엔자 a와 신종 인플루엔자의 동시 검출방법
US20140005066A1 (en) * 2012-06-29 2014-01-02 Advanced Liquid Logic Inc. Multiplexed PCR and Fluorescence Detection on a Droplet Actuator
CN103571865A (zh) * 2013-11-05 2014-02-12 中华人民共和国北京出入境检验检疫局 内含a型流感病毒m基因装甲rna标准物质

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110028188A (ko) * 2009-09-11 2011-03-17 주식회사 엘지생명과학 실시간 다중 역전사 중합효소 연쇄반응에 의한 일반 인플루엔자 a와 신종 인플루엔자의 동시 검출방법
US20140005066A1 (en) * 2012-06-29 2014-01-02 Advanced Liquid Logic Inc. Multiplexed PCR and Fluorescence Detection on a Droplet Actuator
CN103571865A (zh) * 2013-11-05 2014-02-12 中华人民共和国北京出入境检验检疫局 内含a型流感病毒m基因装甲rna标准物质

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113186353A (zh) * 2021-05-28 2021-07-30 杭州晶佰生物技术有限公司 针对c型逆转录病毒的数字pcr检测用引物及检测方法

Similar Documents

Publication Publication Date Title
Valihrach et al. Circulating miRNA analysis for cancer diagnostics and therapy
Santiago Trends and innovations in biosensors for COVID‐19 mass testing
van Kasteren et al. Comparison of seven commercial RT-PCR diagnostic kits for COVID-19
Tribolet et al. MicroRNA biomarkers for infectious diseases: from basic research to biosensing
Ishii et al. Microfluidic quantitative PCR for simultaneous quantification of multiple viruses in environmental water samples
Tan et al. Evaluation of extraction kits and RT-qPCR systems adapted to high-throughput platform for circulating miRNAs
JP6602374B2 (ja) 試料の分析方法
US10978173B2 (en) Method for reducing noise level of data set for a target analyte
EP3090372B1 (en) Detection and correction of jumps in real-time pcr signals
Ong et al. Comparison of the GeneFinderTM COVID-19 Plus RealAmp Kit on the sample-to-result Platform ELITe InGenius to the national reference method: An added value of N gene target detection?
CN106755350A (zh) cfDNA文库qPCR定量标准品的制备方法
Lee et al. A new approach of digital PCR system for non-invasive prenatal screening of trisomy 21
CN104818338A (zh) 一种直接实时荧光定量pcr的方法
CN101475988A (zh) 一种实时荧光定量pcr实验内标的设计方法
Chandra et al. The fungal biome of the oral cavity
Gordillo et al. Evaluation of the COBAS TaqMan 48 real-time PCR system for quantitation of hepatitis B virus DNA
CN105200164A (zh) 巴泰病毒实时荧光定量rt-pcr检测方法及试剂盒
CN111149170A (zh) 分析试样内靶分析物的方法及装置
CN104388582A (zh) A型通用流感病毒的数字pcr检测试剂盒及检测方法
Winter et al. Circulating tumour cell RNA characterisation from colorectal cancer patient blood after inertial microfluidic enrichment
US20180247015A1 (en) Multiple dataset analysis for determining the presence or absence of target analyte
Bornemann et al. Performance of the Sofia SARS-CoV-2 rapid antigen test as frontline test in a university hospital, Germany
Voermans et al. Performance evaluation of a rapid molecular diagnostic, MultiCode based, sample-to-answer assay for the simultaneous detection of Influenza A, B and respiratory syncytial viruses
Zhang et al. Evaluation validation of a qPCR curve analysis method and conventional approaches
Wu et al. RatioCRISPR: A ratiometric biochip based on CRISPR/Cas12a for automated and multiplexed detection of heteroplasmic SNPs in mitochondrial DNA

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20150304

RJ01 Rejection of invention patent application after publication