CN102220419A - Nested PCR (Polymerase Chain Reaction) detection and fluorescence PCR detection kit for universal type malaria and subtypes thereof - Google Patents
Nested PCR (Polymerase Chain Reaction) detection and fluorescence PCR detection kit for universal type malaria and subtypes thereof Download PDFInfo
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Abstract
The invention provides a nested PCR (Polymerase Chain Reaction) detection and fluorescence PCR detection kit for universal type malaria and subtypes thereof. The kit comprises a PCR buffer solution and a Taq DNA (Deoxyribonucleic Acid) polymerase mixture, and primers and probes shown as SEQ ID NO:1-26. The kit can be used for detecting plasmodium specificity and plasmodium subtypes such as malignant malaria, tertian malaria, ovale malaria, quartan malaria and the like. A domestic rare imported ovale malaria case is found with the help of the kit. The kit can be applied to the malarious detection in clinic and port.
Description
Technical field
The invention belongs to the molecular Biological Detection field, the nest-type PRC that is particularly related to the universal and somatotype of a kind of malaria detects and fluorescence PCR detection reagent kit, and this test kit can detect four kinds of plasmodium specific specificity such as plasmodium specificity and subtertian malaria, vivax malaria, ovale malaria, quartan malaria.
Background technology
The malaria diagnosis gold standard is a microscopy, and it not only needs the operator to have rich experience, and when parasitemia densities was low, failing to pinpoint a disease in diagnosis appearred in microscopy easily; Even experienced professional microscopy person detects protozoon low density sample, the susceptibility of microscopy and specificity also can significantly descend.For domestic rare ovale malaria and quartan malaria, misjudge easily.The limitation of tradition microscopy method and skilled microscopy personnel's shortage cause making a definite diagnosis of malaria case and defficulty in diagnosing, become new challenge in the malaria monitoring.And when plasmodium polyinfection takes place, microscopy is difficult for the ring bodies of the ring bodies of subtertian malaria or early stage trophont and vivax malaria is distinguished, and particularly the polypide form changes after the medication, and the worm kind is differentiated difficult, occur mistaken diagnosis easily, influenced the metainfective treatment of plasmodium like this.Therefore, use traditional microscopy method to make " gold " standard and be difficult to the higher diagnostic method of assess effectiveness.
Both at home and abroad nest-type PRC and real-time fluorescence PCR technology are applied to the rapid detection and the somatotype of malaria in recent years, it can judge accurately whether suspected case is infected with malaria or is carried plasmodium, so that in time find and take necessary prevention and control measure, prevent this transmissible disease importing into and spread out of in the frontier port.But, also lack at present the method and the test kit of four kinds of plasmodium somatotypes such as can detecting plasmodium specificity and subtertian malaria, vivax malaria, ovale malaria, quartan malaria.
Summary of the invention
The invention provides the nest-type PRC and the fluorescence PCR detection reagent kit of the universal and somatotype of a kind of malaria, this test kit can detect four kinds of plasmodium somatotypes such as plasmodium specificity and subtertian malaria, vivax malaria, ovale malaria, quartan malaria, detects with this test kit and has also found the domestic rare Introduced cases ovale malaria disease example of an example.
The present invention adopts following technical scheme:
Malaria of the present invention nest-type PRC universal and somatotype detects and fluorescence PCR detection reagent kit, comprise PCR damping fluid and Taq archaeal dna polymerase mixture, also comprise primer and the probe (as SEQ ID NO:1-26 shown in) listed as table 1, wherein, W represents A or T, Y represents C or T, and M represents base A or C, and R represents base A or G.Described somatotype comprises: subtertian malaria, vivax malaria, ovale malaria and four kinds of types of quartan malaria.Primer and the probe of described nucleotide sequence shown in SEQ ID NO:1-3 is used for the universal fluorescent PCR detection of malaria.Primer and the probe fluorescent PCR that be used for subtertian malaria of described nucleotide sequence shown in SEQ ID NO:4-6 detects, primer and the probe fluorescent PCR that be used for vivax malaria of described nucleotide sequence shown in SEQ ID NO:7-9 detects, the fluorescent PCR that the primer of described nucleotide sequence shown in SEQ ID NO:10-11 is used for ovale malaria detects, and primer and the probe fluorescent PCR that be used for quartan malaria of described nucleotide sequence shown in SEQ IDNO:12-14 detects.The primer of described nucleotide sequence shown in SEQ ID NO:15-18 is used for the universal nest-type PRC of malaria and detects, the primer of described nucleotide sequence shown in SEQ ID NO:15-16 and 19-20 is used for the subtertian malaria nest-type PRC and detects, the primer of described nucleotide sequence shown in SEQ ID NO:15-16 and 21-22 is used for the vivax malaria nest-type PRC and detects, the primer of described nucleotide sequence shown in SEQ ID NO:15-16 and 23-24 is used for the ovale malaria nest-type PRC and detects, and the primer of described nucleotide sequence shown in SEQ IDNO:15-16 and 25-26 is used for the quartan malaria nest-type PRC and detects.
Universal nest-type PRC detects with rPLUout-FP, rPLUout-RP, rPLUin-FP, rPLUin-RP primer; The somatotype nest-type PRC detects the Auele Specific Primer of using rPLUout-FP, rPLUout-RP and detecting subtertian malaria, vivax malaria, ovale malaria, quartan malaria; Fluorescent PCR detects to be used universal respectively or subtertian malaria, vivax malaria, the specific primer of quartan malaria and fluorescence labeling probe; Ovale malaria fluoroscopic examination OVA-FP and OVA-RP primer.Each primer probe sequence (being 5 '-3 ') is as shown in table 1 below, and table 1 is primer and the probe that plasmodium nest-type PRC and fluorescent PCR detect.
Table 1
Used following software to carry out the design of above-mentioned primer probe: to use the EditSeq of Lasergene software package and MegAlign instrument to carry out dna sequence analysis and homology comparison.Detect required Auele Specific Primer and FAM fluorescent probe with Primer Express3.0 software design real-time fluorescence RT-PCR, with the general PCR primer of Primer Premier 5.0 software designs.
The using method of mentioned reagent box:
(1) universal nest-type PRC detects with rPLUout-FP, rPLUout-RP, rPLUin-FP, rPLUin-RP primer;
Carry out nest-type PRC when increasing for the first time, use rPLUout-FP, rPLUout-RP to carry out the PCR reaction, the PCR response procedures is: 94 ℃ of 2min; 94 ℃ of 1min, 52 ℃ of 1min, 72 ℃ of 2min, 35 circulations; 72 ℃ of 10min; 4 ℃.
Carry out nest-type PRC when increasing for the second time, use rPLUin-FP, rPLUin-RP primer, the PCR response procedures is: 94 ℃ of 2min; 94 ℃ of 1min, 58 ℃ of 1min, 72 ℃ of 1min, 35 circulations; 72 ℃ of 10min; 4 ℃.
(2) the somatotype nest-type PRC detects the Auele Specific Primer of using rPLUout-FP, rPLUout-RP and detecting subtertian malaria, vivax malaria, ovale malaria, quartan malaria;
Carry out nest-type PRC when increasing for the first time, use rPLUout-FP, rPLUout-RP to carry out the PCR reaction, the PCR response procedures is: 94 ℃ of 2min; 94 ℃ of 1min, 52 ℃ of 1min, 72 ℃ of 2min, 35 circulations; 72 ℃ of 10min; 4 ℃.
Carry out nest-type PRC when increasing for the second time, use subtertian malaria, vivax malaria, ovale malaria and quartan malaria Auele Specific Primer, the PCR response procedures is: 94 ℃ of 2min; 94 ℃ of 1min, 58 ℃ of 1min, 72 ℃ of 1min, 35 circulations; 72 ℃ of 10min; 4 ℃.
(3) fluorescent PCR detects and uses universal respectively or subtertian malaria, vivax malaria, the specific primer of quartan malaria and fluorescence labeling probe;
Use
Fast Universal PCR Master Mix carries out system configurations, and reaction cumulative volume 20 μ l comprise main reaction mixed solution 10 μ l, 10 μ M forward primers, 1 μ l, 10 μ M reverse primers, 1 μ l, 5 μ M probes, 1 μ l, DNA 7 μ l, simultaneously respectively with DEPCH
2O and DNA positive template are as feminine gender and positive control.Amplification and detection are carried out on ABI 7900HTFast quantitative fluorescent PCR instrument, and response procedures is: 95 ℃ of 20s; 95 ℃ of 1s, 58 ℃ of 20s, 40 circulations are collected fluorescence at 58 ℃.
(4) ovale malaria fluoroscopic examination OVA-FP and OVA-RP primer
When carrying out the real-time fluorescence PCR detection of ovale malaria: the real-time fluorescence PCR that adopts the dyestuff method of mixing to carry out ovale malaria detects.The reaction primer is OVA-FP and OVA-RP, and the real-time fluorescence PCR response procedures is: 95 ℃ of 15min; 94 ℃ of 15s, 50 ℃ of 30s, 72 ℃ of 30s (collection fluorescence), 40 circulations; At last the PCR product is carried out the melting curve analysis.
That the mentioned reagent box can be applied in is clinical, in the Check and Examination of Port.
Test kit of the present invention can detect four kinds of plasmodium somatotypes such as plasmodium specificity and subtertian malaria, vivax malaria, ovale malaria, quartan malaria, and can also find the domestic rare Introduced cases ovale malaria disease example of an example.That this test kit can be applied to is clinical, the check of malaria in the port.
Description of drawings
Fig. 1 is the figure as a result of a preferred embodiment of the universal nest-type PRC detection of plasmodium;
Fig. 2 is the figure as a result of a preferred embodiment of plasmodial specificity nest-type PRC detection;
The figure as a result of the preferred embodiment that Fig. 3 relatively detects for plasmodial microscopy and fluorescent PCR;
Fig. 3-1 is the fluorescent PCR detected result figure of 40 parts of microscopy male samples;
Fig. 3-2 is the fluorescent PCR detected result figure of the sample of 20 parts of microscopy feminine genders;
Fig. 4 is plasmodial fluorescent PCR somatotype detected result figure;
Fig. 4-1 is the fluorescent PCR detected result figure of the primer probe of quartan malaria;
Fig. 4-2 is the fluorescent PCR detected result figure of subtertian malaria;
Fig. 4-3 is the fluorescent PCR detected result figure of vivax malaria;
Fig. 4-4 is the fluorescent PCR detected result figure of Introduced cases ovale malaria;
Fig. 4-5 is the melting curve analysis chart of Introduced cases ovale malaria.
Embodiment
For making the present invention easier to understand,, further set forth the present invention below in conjunction with specific embodiment.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.
The extracting method of sample, reagent and plasmodium DNA that the present invention is used etc. is described as follows:
The sample source
30 parts of positive blood samples of malaria microscopy are provided by Yunnan Institute of Parasitic Diseases, and 10 parts of positive blood samples of malaria microscopy and 20 parts of negative blood samples of malaria microscopy are frontier port immigration fever patient's anticoagulation, are preserved by the contriver laboratory.Sample collection is vein and gets blood, 2%EDTA-Na
2Anti-doubtful ,-20 ℃ of cryopreservation.
Reagent
Whole blood DNA extracts test kit (QIAamp DNA Blood Extraction Minikit) and dyestuff mixes method fluorescent PCR reagent (QuantiTect SYBR Green PCR Kit) available from Qiagen company, probe method fluorescent PCR reagent (
Fast Universal PCRMaster Mix) available from ABI company, the Taq archaeal dna polymerase is available from Roche company, and 100bpDNA Ladder Marker, DL2000DNA Marker and agarose are available from TaKaRa company.
The plasmodium DNA extraction
Extract test kit (QIAamp DNA Blood ExtractionMinikit) specification sheets with reference to whole blood DNA and carry out, total DNA of extraction is in-20 ℃ of cryopreservation.
(1) at the bottom of the 1.5ml centrifuge tube, adds 20 μ l Proteinase Ks.
(2) add 200 μ l blood samples to centrifuge tube, if sample less than 200 μ l use the PBS polishing.
(3) add 200 μ l buffer A L to centrifuge tube, impulse hunting 15s mixing.
Hatch 10min for (4) 56 ℃.
(5) of short duration centrifugal.
(6) add 200 μ l dehydrated alcohols, impulse hunting 15s mixing.Of short duration centrifugal.
(7) mixed solution with the 6th step is drawn on the Filter column the centrifugal 1min of 6000g.Filter column is placed on the clean collection tube.
(8) open the Filter column lid, add 500 μ l washing lotion AW1, cover lid, the centrifugal 1min of 6000g.Filter column is placed on the clean collection tube.
(9) open the Filter column lid, add 500 μ l washing lotion AW2, cover lid, the centrifugal 3min of 20000g.Filter column is placed on the clean collection tube.
(10) the centrifugal 1min. of 20000g
(11) Filter column is placed on the 1.5ml centrifuge tube, uncap adds 200 μ l buffer A E or aseptic double-distilled waters, and room temperature is placed 1min, the centrifugal 1min of 6000g.
(12) liquid that elutes is the DNA of malaria.
The amplified production electrophoretic analysis
Get 5 μ l amplified productions through 1.5% agarose gel electrophoresis, GelGreen dyeing, the gel imaging system observations is also taken pictures.
Determined dna sequence
The amplification PCR fragment is carried out sequencing by Shanghai Ying Jun Bioisystech Co., Ltd, again the BLAST comparative analysis is carried out in based composition.
Embodiment 1: a test kit of the present invention and a preferred embodiment of using in the universal nest-type PRC of malaria detects
Malaria of the present invention universal and the nest-type PRC detection of somatotype and a preferred embodiment of fluorescence PCR detection reagent kit, comprise PCR damping fluid and Taq archaeal dna polymerase mixture, also comprise primer and the probe (as SEQ ID NO:1-26 shown in) listed as table 1, wherein, W represents A or T, Y represents C or T, and M represents base A or C, and R represents base A or G.
During the universal nest-type PRC of malaria detects, the universal inner primer of available outer primer and malaria, primer sequence (being 5 '-3 ') is as follows:
Outer primer:
rPLUout-FP?TCAAAGATTAAGCCATGCAAGTGA
rPLUout-RP?CCTGTTGTTGCCTTAAACTTCC
Detect the universal inner primer of malaria:
rPLUin-FP?AAGGATAACTACGGAAAAGCTGT
rPLUin-RP?TACCCGTCATAGCCATGTTAGGCCAATACC。
Embodiment 2: a test kit of the present invention and a preferred embodiment of using in the universal nest-type PRC of malaria detects
Malaria of the present invention universal and the nest-type PRC detection of somatotype and a preferred embodiment of fluorescence PCR detection reagent kit, comprise PCR damping fluid and Taq archaeal dna polymerase mixture, also comprise primer and the probe (as SEQ ID NO:1-26 shown in) listed as table 1, wherein, W represents A or T, Y represents C or T, and M represents base A or C, and R represents base A or G.
During the universal nest-type PRC of malaria detects, the Auele Specific Primer of available outer primer and detection subtertian malaria, vivax malaria, ovale malaria, quartan malaria, primer sequence (being 5 '-3 ') is as follows:
Outer primer:
rPLUout-FP?TCAAAGATTAAGCCATGCAAGTGA
rPLUout-RP?CCTGTTGTTGCCTTAAACTTCC
Detect the primer of subtertian malaria:
rFAL-FP?TTAAACTGGTTTGGGAAAAC
rFAL-RP?ACAATGAACTCAATCATGACTACC
Detect the primer of vivax malaria:
rVIV-FP?CTTCTAGCTTAATCCACATAACTG
rVIV-RP?ACTTCCAAGCCRAAGCAAAGAAAGTCC
Detect the primer of ovale malaria:
rOVA-FP?CGGGGAAATTTCTTAGATTGC
rOVA-RP?GAGAAACAGCATGAATTGCG
Detect the primer of quartan malaria:
rMAL-FP?AACAWAGTTGTACRTTAAGAATAAACGC
rMAL-RP?AATTCCCATGCATAAAAAATTAYACAAA。
M represents base A or C, and R represents base A or G, and W represents A or T, and Y represents C or T.
Embodiment 3: a test kit of the present invention and a preferred embodiment of using in the ovale malaria real-time fluorescence PCR detects
Malaria of the present invention universal and the nest-type PRC detection of somatotype and a preferred embodiment of fluorescence PCR detection reagent kit, comprise PCR damping fluid and Taq archaeal dna polymerase mixture, also comprise primer and the probe (as SEQ ID NO:1-26 shown in) listed as table 1, wherein, W represents A or T, Y represents C or T, and M represents base A or C, and R represents base A or G.
During the ovale malaria real-time fluorescence PCR detects, the primer that available ovale malaria real-time fluorescence PCR detects, primer sequence (being 5 '-3 ') is as follows:
The primer that the ovale malaria real-time fluorescence PCR detects:
OVA-FP?ATTAATGTGTCCTTTTCCCTATTCT
OVA-RP?GCTTTACAATCAAACGAATACATTC。
Embodiment 4: test kit of the present invention and at fluorescent PCR universal and somatotype detects a preferred embodiment of using in the malaria
Malaria of the present invention universal and the nest-type PRC detection of somatotype and a preferred embodiment of fluorescence PCR detection reagent kit, comprise PCR damping fluid and Taq archaeal dna polymerase mixture, also comprise primer and the probe (as SEQ ID NO:1-26 shown in) listed as table 1, wherein, W represents A or T, Y represents C or T, and M represents base A or C, and R represents base A or G.
During the ovale malaria real-time fluorescence PCR detects, available universal primer probe or subtertian malaria, vivax malaria, the specific primer of quartan malaria and fluorescence labeling probe.Primer probe sequence (being 5 '-3 ') is as follows:
Universal fluoroscopic examination primer and probe are as follows:
Plas-FP AGTTAAGGGAGTGAAGACGATCAGA
Plas-RP TCATCCAAMRCCTAGTCGGCATAGTTTAT
Plas-Pro?FAM-ACCGTCGTAATCTT-MGB
M represents base A or C, and R represents base A or G.
The fluoroscopic examination primer and the probe of subtertian malaria are as follows:
FAL-FP?CTTTTGAGAGGTTTTGTTACTTTGAGTAA
FAL-RP?TATTCCATGCTGTAGTATTCAAACACAA
FAL-Pro：
FAM-TGTTCATAACAGACGGGTAGTCATGATTGAGTTCA-BHQ1
The fluoroscopic examination primer and the probe of vivax malaria are as follows:
VIV-FP ACGCTTCTAGCTTAATCCACATAACT
VIV-RP ACTTCCAAGCCRAAGCAAAGAAAGTCC
VIV-Pro?FAM-TTCGTATCGACTTTGTGCGCATTTTGC-BHQ1
R represents base A or G.
The fluoroscopic examination primer and the probe of quartan malaria are as follows:
MAL-FP?CCGACTAGGTGTTGGATGATAGAGTAAA
MAL-RP?AACCCAAAGACTTTGATTTCTCATAA
MAL-Pro FAM-CTATCTAAAAGAAACACTCAT-MGB。
Embodiment 5: the application that the universal nest-type PRC of plasmodium detects
The system of twice amplification of nest-type PRC is slightly different with condition.When increasing for the first time, PCR damping fluid 2.5 μ l, 10mM dNTP 0.5 μ l, each 0.5 μ l of 10mM rPLUout-FP and rPLUout-RP primer, Taq archaeal dna polymerase 0.25 μ l, distilled water 15.75 μ l, dna profiling 5 μ l, total system 25 μ l, the laggard performing PCR reaction of mixing.The PCR response procedures is: 94 ℃ of 2min; 94 ℃ of 1min, 52 ℃ of 1min, 72 ℃ of 2min, 35 circulations; 72 ℃ of 10min; 4 ℃.When carrying out increasing the second time, get 2 μ l the first time PCR product as template, the upstream and downstream primer is changed to the upstream and downstream primer of rPLUin-FP and rPLUin-RP, distilled water increases to 18.75 μ l, all the other are with pcr amplifications for the first time; The PCR response procedures is also slightly different: 94 ℃ of 2min; 94 ℃ of 1min, 58 ℃ of 1min, 72 ℃ of 1min, 35 circulations; 72 ℃ of 10min; 4 ℃.
The universal nest-type PRC amplification of plasmodium as shown in Figure 1, swimming lane 1 is the 100bpDNA mark; Swimming lane 2 is the positive blood sample PCR result of malaria; Swimming lane 3 is the PCR positive control; Swimming lane 4 is the PCR negative control, and negative control uses sterilized water, and positive control uses synthetic malaria dna fragmentation.60 parts of blood samples detect through universal nest-type PRC, have 40 parts of blood samples to amplify the 240bp specific amplification band of expection size, are the plasmodium positive; 20 increments are the amplified band of not expection size originally, is the plasmodium feminine gender.
Embodiment 6: the application that plasmodial somatotype nest-type PRC detects
The system of twice amplification of nest-type PRC is slightly different with condition.When increasing for the first time, PCR damping fluid 2.5 μ l, 10mM dNTP 0.5 μ l, each 0.5 μ l of 10mM rPLUout-FP and rPLUout-RP primer, Taq archaeal dna polymerase 0.25 μ l, distilled water 15.75 μ l, dna profiling 5 μ l, total system 25 μ l, the laggard performing PCR reaction of mixing.The PCR response procedures is: 94 ℃ of 2min; 94 ℃ of 1min, 52 ℃ of 1min, 72 ℃ of 2min, 35 circulations; 72 ℃ of 10min; 4 ℃.When carrying out increasing the second time, get 2 μ l the first time PCR product as template, the upstream and downstream primer is for detecting the upstream and downstream primer of somatotype, distilled water increases to 18.75 μ l, all the other are with pcr amplifications for the first time; The PCR response procedures is also slightly different: 94 ℃ of 2min; 94 ℃ of 1min, 58 ℃ of 1min, 72 ℃ of 1min, 35 circulations; 72 ℃ of 10min; 4 ℃.
Use species-specific primer that plasmodium male blood sample is carried out the nest-type PRC amplification and see Fig. 2, Fig. 2 is plasmodial specificity nest-type PRC detected result figure, swimming lane 1:100bpDNA mark; Swimming lane 2: positive blood sample subtertian malaria pcr amplification; Swimming lane 3: negative control subtertian malaria pcr amplification; Swimming lane 4: positive control subtertian malaria pcr amplification; Swimming lane 5: negative control vivax malaria pcr amplification; Swimming lane 6: positive blood sample vivax malaria pcr amplification; Swimming lane 7: positive control vivax malaria pcr amplification; Swimming lane 8: negative control quartan malaria pcr amplification; Swimming lane 9: positive control quartan malaria pcr amplification; Swimming lane 10. positive blood sample ovale malaria pcr amplifications; Swimming lane 11: positive control ovale malaria pcr amplification; Swimming lane 12: negative control ovale malaria pcr amplification.The expectation amplified band of the positive blood sample of subtertian malaria, vivax malaria, ovale malaria and quartan malaria is respectively 204bp, 119bp, 456bp and 141bp.The result has 22 parts for subtertian malaria infects, and 13 parts are the vivax malaria infection, and 1 part is that ovale malaria infects; 3 parts is subtertian malaria/vivax malaria polyinfection.Negative control uses sterilized water, and positive control uses synthetic malaria dna fragmentation.
Embodiment 7: the application of the universal detection of fluorescent PCR
Use
Fast Universal PCR Master Mix carries out system configurations, reaction cumulative volume 20 μ l, comprise Master Mix 10 μ l, 10 μ M forward primers, 1 μ l, 10 μ M reverse primers, 1 μ l, 5 μ M probes, 1 μ l, DNA 7 μ l, simultaneously respectively with DEPC H2O and DNA positive template as feminine gender and positive control.Amplification and detection are carried out on ABI 7900HT Fast quantitative fluorescent PCR instrument, and response procedures is: 95 ℃ of 20s; 95 ℃ of 1s, 58 ℃ of 20s, 40 circulations are collected fluorescence at 58 ℃.
Universal fluoroscopic examination primer and probe are as follows:
Plas-FP AGTTAAGGGAGTGAAGACGATCAGA
Plas-RP TCATCCAAMRCCTAGTCGGCATAGTTTAT
Plas-Pro?FAM-ACCGTCGTAATCTT-MGB。
M represents base A or C, and R represents base A or G.
60 increments are originally carried out the malaria universal real time fluorescent PCR detect, need 20min detection time approximately.The figure as a result of the preferred embodiment that Fig. 3 relatively detects for plasmodial microscopy and fluorescent PCR, wherein, Fig. 3-1 is the fluorescent PCR detected result of 40 parts of microscopy male samples, the result shows that the fluorescent PCR detection of 39 parts of microscopy positive sample is all positive; Fig. 3-2 is the fluorescent PCR detected result of the sample of 20 parts of microscopy feminine genders; Swimming lane 1: positive control; Swimming lane 2,3 and 4 is respectively sample fluorescent PCR detected result 55,45 and No. 58; In the sample of 20 parts of microscopy feminine genders, 3 increments are arranged, and this is the real-time fluorescence PCR positive, and this is the real-time fluorescence PCR feminine gender for all the other 17 increments.
Embodiment 8: the application that the fluorescent PCR somatotype detects
Use
Fast Universal PCR Master Mix carries out system configurations, reaction cumulative volume 20 μ l, comprise Master Mix 10 μ l, 10 μ M forward primers, 1 μ l, 10 μ M reverse primers, 1 μ l, 5 μ M probes, 1 μ l, DNA 7 μ l, simultaneously respectively with DEPC H2O and DNA positive template as feminine gender and positive control.Amplification and detection are carried out on ABI 7900HT Fast quantitative fluorescent PCR instrument, and response procedures is: 95 ℃ of 20s; 95 ℃ of 1s, 58 ℃ of 20s, 40 circulations are collected fluorescence at 58 ℃.
Specific primer and fluorescence labeling probe.Primer probe sequence (being 5 '-3 ') respectively is as follows:
The fluoroscopic examination primer and the probe of subtertian malaria are as follows:
FAL-FP CTTTTGAGAGGTTTTGTTACTTTGAGTAA
FAL-RP TATTCCATGCTGTAGTATTCAAACACAA
FAL-Pro：
FAM-TGTTCATAACAGACGGGTAGTCATGATTGAGTTCA-BHQ1
The fluoroscopic examination primer and the probe of vivax malaria are as follows:
VIV-FP ACGCTTCTAGCTTAATCCACATAACT
VIV-RP ACTTCCAAGCCRAAGCAAAGAAAGTCC
VIV-Pro?FAM-TTCGTATCGACTTTGTGCGCATTTTGC-BHQ1
The fluoroscopic examination primer and the probe of quartan malaria are as follows:
MAL-FP?CCGACTAGGTGTTGGATGATAGAGTAAA
MAL-RP?AACCCAAAGACTTTGATTTCTCATAA
MAL-Pro FAM-CTATCTAAAAGAAACACTCAT-MGB。
The real-time fluorescence PCR that adopts the dyestuff method of mixing to carry out ovale malaria detects.Reaction system is 25 μ l, comprises 2 * PCR damping fluid, 12.5 μ l, 10mM upstream and downstream primer OVA-FP and OVA-RP each 0.75 μ l, aseptic double-distilled water 9 μ l and plasmodium template DNA 2 μ l.The real-time fluorescence PCR response procedures is: 95 ℃ of 15min; 94 ℃ of 15s, 50 ℃ of 30s, 72 ℃ of 30s (collection fluorescence), 40 circulations; At last the PCR product is carried out the melting curve analysis, program is 94 ℃ of 15s, 60 ℃ of 60s, 95 ℃ of 15s.
Fig. 4 is plasmodial fluorescent PCR somatotype detected result figure; Fig. 4-1 is the fluorescent PCR detected result figure of the primer probe of quartan malaria, and the fluorescent PCR that swimming lane 1 and 2 is respectively subtertian malaria and quartan malaria system detects; Swimming lane 3 and 4 is respectively subtertian malaria and quartan malaria negative control.Fig. 4-2 is the fluorescent PCR detected result figure of subtertian malaria, and Fig. 4-3 is the fluorescent PCR detected result figure of vivax malaria, and Fig. 4-4 is the fluorescent PCR detected result figure of Introduced cases ovale malaria, and Fig. 4-5 is the melting curve analysis chart of Introduced cases ovale malaria.Found that 24 parts of subtertian malarias (Fig. 4-2), 11 parts of vivax malarias (Fig. 4-3), 1 part of subtertian malaria/vivax malaria polyinfection, 1 part of ovale malaria infect (Fig. 4-4), 3 parts fail somatotype.
Nest-type PRC by blood sample detects and the fluorescent PCR detection, has found a routine Introduced cases ovale malaria case.Its nest-type PRC amplification size is about 450bp; Fig. 4-4 is the fluorescent PCR detected result figure of Introduced cases ovale malaria; The fluorescent PCR amplification is tangible sigmoid curve, and the ovale malaria fluorescent PCR of swimming lane 1:58 blood sample detects; Swimming lane 2: the positive control fluorescent PCR detects; Swimming lane 3: the negative control fluorescent PCR detects.Fig. 4-5 is the melting curve analysis of Introduced cases ovale malaria, the melting curve of swimming lane 1:58 blood sample amplified fragments; Swimming lane 2: the melting curve of positive control amplified fragments; Swimming lane 3: the melting curve of negative control amplified fragments; As seen from the figure, the melting curve Tm value of amplified fragments is 72.5 ℃; The nest-type PRC amplified fragments of Introduced cases ovale malaria is sent to order-checking, and sequential analysis shows that expanding fragment length is 434bp, and the based composition of sequence is as follows:
CGGGGAAATTTCTTAGATTGCTTCCTTCAGTACCTTATGAGAAATCAAAGTCTTTGGGTTCTGGGGCGAGTATTCGCGCAAGCGAGAAAGTTAAAAGAATTGACGGAAGGGCACCACCAGG CGTGGAGCTTGCGGCTTAATTTGACTCAACACGGGGAAACTCACTAGTTTAAGACAAGAGTAGGATTGACAGATTAATAGCTCTTTCTTGATTTCTTGGA TGGTGATGCATGGCCGTTTTTAGTTCGTGAATATGATTTGTCTGGTTAATTCCGATAACGAACGAGATCTTAACCTGCTAATTAGCGGCGAATACGTTAT
The underscore base is the upstream and downstream primer position of amplification.This sequence is delivered on the GenBank, and the GenBank accession number is JF505386.
Embodiment 9: the comparison of plasmodium microscopy and nest-type PRC amplification method
Plasmodium microscopy and nest-type PRC amplification method are compared (table 2), 18 parts of subtertian malarias, two kinds of detected results of 11 parts of vivax malarias and 17 parts of negative blood samples are consistent, 2 parts of microscopies are that vivax malaria and 2 parts of negative samples of microscopy are shown as subtertian malaria through the nest-type PRC amplification, the sample that 2 parts of microscopies are subtertian malaria is shown as vivax malaria through the nest-type PRC amplification, 1 part of negative sample of microscopy is shown as ovale malaria through the nest-type PRC amplification, 2 parts of microscopies are that the sample that subtertian malaria and 1 part of microscopy are vivax malaria is shown as subtertian malaria/vivax malaria polyinfection through the nest-type PRC amplification, the positive blood sample of 1 part of microscopy vivax malaria is failed somatotype through nest-type PRC, and 2 parts of microscopies are that the sample that subtertian malaria and 1 part of microscopy are vivax malaria is shown as feminine gender through the nest-type PRC amplification.
The plasmodium nest-type PRC of table 2 blood sample and microscopy result are relatively
To carry out sequencing with the specificity nest-type PRC amplified band of the inconsistent blood sample of microscopy result, the blast that sequencing result is carried out ncbi database analyzes, found that sequence is the corresponding plasmodial SSU rDNA gene order of amplification, confirm that the nest-type PRC amplification is correct.
Last institute should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although the present invention has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical solution of the present invention.
Sequence table
＜120〉a kind of malaria nest-type PRC universal and somatotype detects and fluorescence PCR detection reagent kit
<160>26
<170>PatentIn?version?3.2
<210>1
<211>25
<212>DNA
＜213〉artificial sequence Plas-FP
<400>1
AGTTAAGGGA GTGAAGACGATCAGA 25
<210>1
<211>29
<212>DNA
＜213〉artificial sequence Plas-RP
<400>2
TCATCCAAMR?CCTAGTCGGC?ATAGTTTAT 29
<210>1
<211>14
<212>DNA
＜213〉artificial sequence Plas-Pro
<400>3
ACCGTCGTAA?TCTT 14
<210>1
<211>29
<212>DNA
＜213〉artificial sequence FAL-FP
<400>4
CTTTTGAGAG?GTTTTGTTAC?TTTGAGTAA 29
<210>1
<211>28
<212>DNA
＜213〉artificial sequence FAL-RP
<400>5
TATTCCATGC?TGTAGTATTC?AAACACAA 28
<210>1
<211>35
<212>DNA
＜213〉artificial sequence FAL-Pro
<400>6
TGTTCATAAC?AGACGGGTAG?TCATGATTGA?GTTCA 35
<210>1
<211>26
<212>DNA
＜213〉artificial sequence VIV-FP
<400>7
ACGCTTCTAG?CTTAATCCAC?ATAACT 26
<210>1
<211>27
<212>DNA
＜213〉artificial sequence VIV-RP
<400>8
ACTTCCAAGC?CRAAGCAAAG?AAAGTCC 27
<210>1
<211>27
<212>DNA
＜213〉artificial sequence VIV-Pro
<400>9
TTCGTATCGA?CTTTGTGCGC?ATTTTGC 27
<210>1
<211>25
<212>DNA
＜213〉artificial sequence OVA-FP
<400>10
ATTAATGTGT?CCTTTTCCCT?ATTCT 25
<210>1
<211>25
<212>DNA
＜213〉artificial sequence OVA-RP
<400>11
GCTTTACAAT?CAAACGAATA?CATTC 25
<210>1
<211>28
<212>DNA
＜213〉artificial sequence MAL-FP
<400>12
CCGACTAGGT?GTTGGATGAT?AGAGTAAA 28
<210>1
<211>26
<212>DNA
＜213〉artificial sequence MAL-RP
<400>13
AACCCAAAGA?CTTTGATTTC?TCATAA 26
<210>1
<211>21
<212>DNA
＜213〉artificial sequence MAL-Pro
<400>14
CTATCTAAAA?GAAACACTCAT 21
<210>1
<211>24
<212>DNA
＜213〉artificial sequence rPLUout-FP
<400>15
TCAAAGATTA?AGCCATGCAA?GTGA 24
<210>1
<211>22
<212>DNA
＜213〉artificial sequence rPLUout-RP
<400>16
CCTGTTGTTG?CCTTAAACTT?CC 22
<210>1
<211>23
<212>DNA
＜213〉artificial sequence rPLUin-FP
<400>17
AAGGATAACT?ACGGAAAAGC?TGT 23
<210>1
<211>30
<212>DNA
＜213〉artificial sequence rPLUin-RP
<400>18
TACCCGTCAT?AGCCATGTTA?GGCCAATACC 30
<210>1
<211>20
<212>DNA
＜213〉artificial sequence rFAL-FP
<400>19
TTAAACTGGT?TTGGGAAAAC 20
<210>1
<211>24
<212>DNA
＜213〉artificial sequence rFAL-RP
<400>20
ACAATGAACT?CAATCATGAC?TACC 24
<210>1
<211>24
<212>DNA
＜213〉artificial sequence rVIV-FP
<400>21
CTTCTAGCTT?AATCCACATA?ACTG 24
<210>1
<211>27
<212>DNA
＜213〉artificial sequence rVIV-RP
<400>22
ACTTCCAAGC?CRAAGCAAAG?AAAGTCC 22
<210>1
<211>21
<212>DNA
＜213〉artificial sequence rOVA-FP
<400>23
CGGGGAAATT?TCTTAGATTG?C 21
<210>1
<211>20
<212>DNA
＜213〉artificial sequence rOVA-RP
<400>24
GAGAAACAGC?ATGAATTGCG 20
<210>1
<211>28
<212>DNA
＜213〉artificial sequence rMAL-FP
<400>25
AACAWAGTTG?TACRTTAAGA?ATAAACGC 28
<210>1
<211>28
<212>DNA
＜213〉artificial sequence rMAL-RP
<400>26
AATTCCCATG?CATAAAAAAT?TAYACAAA 28
Claims (12)
1. a malaria nest-type PRC universal and somatotype detects and fluorescence PCR detection reagent kit, comprise PCR damping fluid and Taq archaeal dna polymerase mixture, it is characterized in that, also comprise primer and the probe of nucleotide sequence shown in SEQID NO:1-26, wherein, W represents base A or T, and Y represents base C or T, M represents base A or C, and R represents base A or G.
2. test kit according to claim 1 is characterized in that, described somatotype comprises: subtertian malaria, vivax malaria, ovale malaria and four kinds of types of quartan malaria.
3. test kit according to claim 1 is characterized in that, primer and the probe of described nucleotide sequence shown in SEQ IDNO:1-3 is used for the universal fluorescent PCR detection of malaria.
4. test kit according to claim 1 is characterized in that, primer and the probe fluorescent PCR that be used for subtertian malaria of described nucleotide sequence shown in SEQ IDNO:4-6 detects.
5. test kit according to claim 1 is characterized in that, primer and the probe fluorescent PCR that be used for vivax malaria of described nucleotide sequence shown in SEQ IDNO:7-9 detects.
6. test kit according to claim 1 is characterized in that, the fluorescent PCR that the primer of described nucleotide sequence shown in SEQ IDNO:10-11 is used for ovale malaria detects.
7. test kit according to claim 1 is characterized in that, primer and the probe fluorescent PCR that be used for quartan malaria of described nucleotide sequence shown in SEQ IDNO:12-14 detects.
8. test kit according to claim 1 is characterized in that, the primer of described nucleotide sequence shown in SEQ IDNO:15-18 is used for the universal nest-type PRC of malaria and detects.
9. test kit according to claim 1 is characterized in that, the primer of described nucleotide sequence shown in SEQ IDNO:15-16 and 19-20 is used for the subtertian malaria nest-type PRC and detects.
10. test kit according to claim 1 is characterized in that, the primer of described nucleotide sequence shown in SEQ IDNO:15-16 and 21-22 is used for the vivax malaria nest-type PRC and detects.
11. test kit according to claim 1 is characterized in that, the primer of described nucleotide sequence shown in SEQ IDNO:15-16 and 23-24 is used for the ovale malaria nest-type PRC and detects.
12. test kit according to claim 1 is characterized in that, the primer of described nucleotide sequence shown in SEQ IDNO:15-16 and 25-26 is used for the quartan malaria nest-type PRC and detects.
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Cited By (10)
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| CN102676651A (en) * | 2012-03-09 | 2012-09-19 | 广西壮族自治区疾病预防控制中心 | Quickly-nested PCR (polymerase chain reaction) malaria molecular diagnosis reagent kit and detection method |
| CN104450903A (en) * | 2014-12-01 | 2015-03-25 | 中检国研(北京)科技有限公司 | Probe for classificatory diagnosis of four plasmodia infecting human, kit and using method thereof |
| CN104531840A (en) * | 2014-11-26 | 2015-04-22 | 中华人民共和国上海出入境检验检疫局 | Rapid and sensitive plasmodium falciparum detection method |
| CN104561268A (en) * | 2014-11-26 | 2015-04-29 | 中华人民共和国上海出入境检验检疫局 | Rapid and high-throughput plasmodium detection method |
| CN104561269A (en) * | 2014-11-26 | 2015-04-29 | 中华人民共和国上海出入境检验检疫局 | Rapid and sensitive detection method for plasmodium vivax |
| CN104762379A (en) * | 2015-03-30 | 2015-07-08 | 湖南圣湘生物科技有限公司 | Plasmodium detection kit |
| CN105002266A (en) * | 2014-04-23 | 2015-10-28 | 江苏奇天基因生物科技有限公司 | Universal method for detecting malaria by using recombinase-mediated isothermal nucleic acid amplification technology |
| WO2016051177A3 (en) * | 2014-10-01 | 2016-05-19 | Arcis Biotechnology Holdings Limited | Methods and kits |
| WO2020132408A3 (en) * | 2018-12-20 | 2020-07-23 | Gen-Probe Incorporated | Compositions and methods for detecting plasmodium species nucleic acid |
| CN116377100A (en) * | 2022-09-16 | 2023-07-04 | 深圳生科原生物有限公司 | Plasmodium typing detection kit and detection method thereof |
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| CN102676651B (en) * | 2012-03-09 | 2014-07-09 | 广西壮族自治区疾病预防控制中心 | Quickly-nested PCR (polymerase chain reaction) malaria molecular diagnosis reagent kit and detection method |
| CN102676651A (en) * | 2012-03-09 | 2012-09-19 | 广西壮族自治区疾病预防控制中心 | Quickly-nested PCR (polymerase chain reaction) malaria molecular diagnosis reagent kit and detection method |
| CN105002266A (en) * | 2014-04-23 | 2015-10-28 | 江苏奇天基因生物科技有限公司 | Universal method for detecting malaria by using recombinase-mediated isothermal nucleic acid amplification technology |
| US10889810B2 (en) | 2014-10-01 | 2021-01-12 | Arcis Biotechnology Holdings Limited | Methods and kits |
| US10711264B2 (en) | 2014-10-01 | 2020-07-14 | Arcis Biotechnology Holdings Limited | Methods and kits |
| EP3305917A1 (en) * | 2014-10-01 | 2018-04-11 | Arcis Biotechnology Holdings Limited | Methods and kits |
| WO2016051177A3 (en) * | 2014-10-01 | 2016-05-19 | Arcis Biotechnology Holdings Limited | Methods and kits |
| CN104561268A (en) * | 2014-11-26 | 2015-04-29 | 中华人民共和国上海出入境检验检疫局 | Rapid and high-throughput plasmodium detection method |
| CN104561269A (en) * | 2014-11-26 | 2015-04-29 | 中华人民共和国上海出入境检验检疫局 | Rapid and sensitive detection method for plasmodium vivax |
| CN104561269B (en) * | 2014-11-26 | 2018-09-18 | 中华人民共和国上海出入境检验检疫局 | A kind of plasmodium vivax detecting method of rapid sensitive |
| CN104531840A (en) * | 2014-11-26 | 2015-04-22 | 中华人民共和国上海出入境检验检疫局 | Rapid and sensitive plasmodium falciparum detection method |
| CN104450903A (en) * | 2014-12-01 | 2015-03-25 | 中检国研(北京)科技有限公司 | Probe for classificatory diagnosis of four plasmodia infecting human, kit and using method thereof |
| CN104762379A (en) * | 2015-03-30 | 2015-07-08 | 湖南圣湘生物科技有限公司 | Plasmodium detection kit |
| WO2020132408A3 (en) * | 2018-12-20 | 2020-07-23 | Gen-Probe Incorporated | Compositions and methods for detecting plasmodium species nucleic acid |
| CN113412335A (en) * | 2018-12-20 | 2021-09-17 | 基因探针股份有限公司 | Compositions and methods for detecting plasmodium nucleic acids |
| CN116377100A (en) * | 2022-09-16 | 2023-07-04 | 深圳生科原生物有限公司 | Plasmodium typing detection kit and detection method thereof |
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