CN101052720B - Method of detecting H5 or H7 avian influenza virus - Google Patents
Method of detecting H5 or H7 avian influenza virus Download PDFInfo
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Abstract
An oligonucleotide primer capable of specifically hybridizing with an arbitrary base sequence designed from the base sequence of hemagglutinin of H5 or H7 avian influenza virus; a method of nucleic acid amplification using the primer; a method of diagnosing any infection with H5 or H7 avian influenza virus through detection of nucleic acid amplification; and a kit for influenza diagnosis.
Description
Technical field
The present invention relates to the detection method of H5 type or H7 type bird flu virus, more specifically relate to the Oligonucleolide primers that is used to detect H5 type or H7 type bird flu virus, the H5 type that uses this primer or H7 type bird flu virus detection method, influenza diagnostic method and be used to diagnose the test kit of influenza.
Background technology
Influenza is epidemic viral respiratory organs transmissible disease, suffers from the patient and has the wide age level from infant to the elderly, and usually be fatal.At present, infected poultry and the H5 type bird flu virus that forms problem did not infect the mankind originally.But, found infection in Hong Kong in 1997 to the people, this time be 6 death of 18 patients in the groove.Do not find infection again fortunately, but get into 2004, found infection, have 8 people dead, 16 people are arranged in Vietnam in Thailand to the people in Thailand and Vietnam to the people.
HPAIV also has the H7 type except that the H5 type, the H7 type roughly is divided into Europe class and american type according to its sequence.2003 in Holland popular time report has 1 people dead, also reported the popular of H7 type bird flu virus in 2003 to 2004 in the U.S..
At present, the detection end user A type influenza virus quick diagnosis reagent kit of bird flu virus.But, more detailed analyses such as the antigen analysis of the isolating virus of evaluation needs of the hypotype of institute's infective virus and gene test.
Therefore the diagnosis of employing virus separation and Culture that can obtain reliable result can't be diagnosed owing to need a few days fast.Can separate than virus and carry out method of diagnosing more quickly and have some kinds, RT-PCR method wherein is considered to that to compare detection sensitivity higher with other method.But, for present disclosed RT-PCR method, have and report that it is compared and can't detect virus with highly sensitive with the infection valency of virus, even be negative in the inspection of employing RT-PCR method, can not get rid of the infection of bird flu.Therefore, hope occurring can be rapidly and detect the test procedure of H5 and H7 type bird flu virus in high sensitivity.
Patent documentation 1: european patent application discloses specification sheets No. 1310565
Patent documentation 2: the public table of Japanese Patent 2004-509648 communique
Non-patent literature 1:Lau LT. etc., Biochem.Biophys.Res.Commun., vol.313, p.336-342 (2004)
Non-patent literature 2:Shang S. etc., Biochem.Biophys.Res.Commun., vol.302, p.377-383 (2003)
Non-patent literature 3:Collins RA. etc., Biochem.Biophys.Res.Commun., vol.300, p.507-515 (2003)
Non-patent literature 4:Lee MS. etc., J.Virol.Methods, vol.97, p.13-22 (2001)
Non-patent literature 5:Munch M. etc., Arch.Virol., vol.146, p.87-97 (2001)
The announcement of invention
In order to solve above-mentioned problem; The inventor conscientiously studies the back and finds; Make and the oligonucleotide primer that the base sequence of H5 or H7 type avian influenza virus specific is hybridized, through the base sequence of LAMP (loop-mediated isothermal amplification, loop-mediated isothermal amplification) method amplification H5 or H7 type avian influenza virus specific; Can detect H5 or H7 type bird flu virus in high sensitivity, thereby accomplish the present invention.
That is, the present invention provides following (1)～(8).
(1) according to be selected from any base sequence of 693～959 base sequence of the hemagglutinin base sequence of the H5 type bird flu virus of sequence numbering 1 expression or with the Oligonucleolide primers of its complementary base sequence design.
(2), wherein, comprise the oligonucleotide that is selected from following (a)～(c) like (1) described Oligonucleolide primers:
(a) be selected from the base sequence of sequence numbering 2～7 expression or with the oligonucleotide that contains 15 bases of successive at least of its complementary base sequence;
(b) can with the oligonucleotide of aforementioned (a) described oligonucleotide hybridize under stringent condition;
(c) comprise aforementioned (a) or (b) 1 in the described oligonucleotide～several base base sequence of being replaced, lack, insert or adding, oligonucleotide with primer function.
(3) like (1) or (2) described Oligonucleolide primers; It is characterized in that; 3 ' end side from the target nucleic acid of the hemagglutinin of H5 type bird flu virus selects note to do the base sequence zone of F3c, F2c, F1c; Select note to do the base sequence zone of B3, B2, B1 from 5 ' end side, when complementary base sequence note is separately made F3, F2, F1 and B3c, B2c, B1c, constitute by the base sequence that is selected from following (a)～(d):
(a) have the F2 zone of target nucleic acid at 3 ' end side, have the base sequence in the F1c zone of target nucleic acid at 5 ' end side;
(b) has the base sequence in the F3 zone of target nucleic acid;
(c) have the B2 zone of target nucleic acid at 3 ' end side, have the base sequence in the B1c zone of target nucleic acid at 5 ' end side;
(d) has the base sequence in the B3 zone of target nucleic acid.
(4) like the described Oligonucleolide primers in (1)～(3), it is characterized in that, can increase, to 3 ' end, constitute by the base sequence that is selected from following (a)～(b) from 5 ' end to the base sequence of H5 type avian influenza virus specific:
(a) 5 '-(with the base sequence complementary base sequence of sequence numbering 2)-(base sequence arbitrarily of base several 0～50)-(base sequence of sequence numbering 3)-3 ';
(b) 5 '-(base sequence of sequence numbering 5)-(base sequence arbitrarily of base several 0～50)-(with the base sequence complementary base sequence of sequence numbering 6)-3 '.
(5) detection method of H5 type bird flu virus is characterized in that, uses the described Oligonucleolide primers in (1)～(4), carries out the amplified reaction in the target nucleic acid zone of H5 type bird flu virus.
Like the detection method of (5) described H5 type bird flu virus, it is characterized in that (6) amplified reaction in the target nucleic acid zone of H5 type bird flu virus adopts the LAMP method.
(7) diagnostic method of influenza is characterized in that, through using the described Oligonucleolide primers in (1)～(4), detects the amplification in the target nucleic acid zone of H5 type bird flu virus, and whether diagnosis has the infection of H5 type bird flu virus.
(8) test kit is characterized in that, comprises the described Oligonucleolide primers in (1)～(4) that is used to diagnose influenza.
The present invention also provides following (9)～(16).
(9) according to be selected from any base sequence of 19～220 base sequence of the hemagglutinin base sequence of the H5 type bird flu virus of sequence numbering 1 expression or with the Oligonucleolide primers of its complementary base sequence design.
(10), wherein, comprise the oligonucleotide that is selected from following (a)～(c) like (9) described Oligonucleolide primers:
(a) be selected from the base sequence of sequence numbering 13～18 expression or with the oligonucleotide that contains 15 bases of successive at least of its complementary base sequence;
(b) can with the oligonucleotide of aforementioned (a) described oligonucleotide hybridize under stringent condition;
(c) comprise aforementioned (a) or (b) 1 in the described oligonucleotide～several base base sequence of being replaced, lack, insert or adding, oligonucleotide with primer function.
(11) like (9) or (10) described Oligonucleolide primers; It is characterized in that; 3 ' end side from the target nucleic acid of the hemagglutinin of H5 type bird flu virus selects note to do the base sequence zone of F3c, F2c, F1c; Select note to do the base sequence zone of B3, B2, B1 from 5 ' end side, when complementary base sequence note is separately made F3, F2, F1 and B3c, B2c, B1c, constitute by the base sequence that is selected from following (a)～(d):
(a) have the F2 zone of target nucleic acid at 3 ' end side, have the base sequence in the F1c zone of target nucleic acid at 5 ' end side;
(b) has the base sequence in the F3 zone of target nucleic acid;
(c) have the B2 zone of target nucleic acid at 3 ' end side, have the base sequence in the B1c zone of target nucleic acid at 5 ' end side;
(d) has the base sequence in the B3 zone of target nucleic acid.
(12) like the described Oligonucleolide primers in (9)～(11), it is characterized in that, can increase, to 3 ' end, constitute by the base sequence that is selected from following (a)～(b) from 5 ' end to the base sequence of H5 type avian influenza virus specific:
(a) 5 '-(with the base sequence complementary base sequence of sequence numbering 13)-(base sequence arbitrarily of base several 0～50)-(base sequence of sequence numbering 14)-3 ';
(b) 5 '-(base sequence of sequence numbering 16)-(base sequence arbitrarily of base several 0～50)-(with the base sequence complementary base sequence of sequence numbering 17)-3 '.
(13) detection method of H5 type bird flu virus is characterized in that, uses the described Oligonucleolide primers in (9)～(12), carries out the amplified reaction in the target nucleic acid zone of H5 type bird flu virus.
Like the detection method of (13) described H5 type bird flu virus, it is characterized in that (14) amplified reaction in the target nucleic acid zone of H5 type bird flu virus adopts the LAMP method.
(15) diagnostic method of influenza is characterized in that, through using the described Oligonucleolide primers in (9)～(12), detects the amplification in the target nucleic acid zone of H5 type bird flu virus, and whether diagnosis has the infection of H5 type bird flu virus.
(16) test kit is characterized in that, comprises the described Oligonucleolide primers in (9)～(12) that is used to diagnose influenza.
The present invention also provides following (17)～(24).
(17) according to be selected from any base sequence of 114～333 base sequence of the hemagglutinin base sequence of the H5 type bird flu virus of sequence numbering 1 expression or with the Oligonucleolide primers of its complementary base sequence design.
(18), wherein, comprise the oligonucleotide that is selected from following (a)～(c) like (17) described Oligonucleolide primers:
(a) be selected from the base sequence of sequence numbering 24～29 expression or with the oligonucleotide that contains 15 bases of successive at least of its complementary base sequence;
(b) can with the oligonucleotide of aforementioned (a) described oligonucleotide hybridize under stringent condition;
(c) comprise aforementioned (a) or (b) 1 in the described oligonucleotide～several base base sequence of being replaced, lack, insert or adding, oligonucleotide with primer function.
(19) like (17) or (18) described Oligonucleolide primers; It is characterized in that; 3 ' end side from the target nucleic acid of the hemagglutinin of H5 type bird flu virus selects note to do the base sequence zone of F3c, F2c, F1c; Select note to do the base sequence zone of B3, B2, B1 from 5 ' end side, when complementary base sequence note is separately made F3, F2, F1 and B3c, B2c, B1c, constitute by the base sequence that is selected from following (a)～(d):
(a) have the F2 zone of target nucleic acid at 3 ' end side, have the base sequence in the F1c zone of target nucleic acid at 5 ' end side;
(b) has the base sequence in the F3 zone of target nucleic acid;
(c) have the B2 zone of target nucleic acid at 3 ' end side, have the base sequence in the B1c zone of target nucleic acid at 5 ' end side;
(d) has the base sequence in the B3 zone of target nucleic acid.
(20) like the described Oligonucleolide primers in (17)～(19), it is characterized in that, can increase, to 3 ' end, constitute by the base sequence that is selected from following (a)～(b) from 5 ' end to the base sequence of H5 type avian influenza virus specific:
(a) 5 '-(with the base sequence complementary base sequence of sequence numbering 24)-(base sequence arbitrarily of base several 0～50)-(base sequence of sequence numbering 25)-3 ';
(b) 5 '-(base sequence of sequence numbering 27)-(base sequence arbitrarily of base several 0～50)-(with the base sequence complementary base sequence of sequence numbering 28)-3 '.
(21) detection method of H5 type bird flu virus is characterized in that, uses the described Oligonucleolide primers in (17)～(20), carries out the amplified reaction in the target nucleic acid zone of H5 type bird flu virus.
Like the detection method of (21) described H5 type bird flu virus, it is characterized in that (22) amplified reaction in the target nucleic acid zone of H5 type bird flu virus adopts the LAMP method.
(23) diagnostic method of influenza is characterized in that, through using the described Oligonucleolide primers in (17)～(20), detects the amplification in the target nucleic acid zone of H5 type bird flu virus, and whether diagnosis has the infection of H5 type bird flu virus.
(24) test kit is characterized in that, comprises the described Oligonucleolide primers in (17)～(20) that is used to diagnose influenza.
The present invention also provides following (25)～(32).
(25) according to be selected from any base sequence of 874～1065 base sequence of the hemagglutinin base sequence of the H5 type bird flu virus of sequence numbering 1 expression or with the Oligonucleolide primers of its complementary base sequence design.
(26), wherein, comprise the oligonucleotide that is selected from following (a)～(c) like (25) described Oligonucleolide primers:
(a) be selected from the base sequence of sequence numbering 35～40 expression or with the oligonucleotide that contains 15 bases of successive at least of its complementary base sequence;
(b) can with the oligonucleotide of aforementioned (a) described oligonucleotide hybridize under stringent condition;
(c) comprise aforementioned (a) or (b) 1 in the described oligonucleotide～several base base sequence of being replaced, lack, insert or adding, oligonucleotide with primer function.
(27) like (25) or (26) described Oligonucleolide primers; It is characterized in that; 3 ' end side from the target nucleic acid of the hemagglutinin of H5 type bird flu virus selects note to do the base sequence zone of F3c, F2c, F1c; Select note to do the base sequence zone of B3, B2, B1 from 5 ' end side, when complementary base sequence note is separately made F3, F2, F1 and B3c, B2c, B1c, constitute by the base sequence that is selected from following (a)～(d):
(a) have the F2 zone of target nucleic acid at 3 ' end side, have the base sequence in the F1c zone of target nucleic acid at 5 ' end side;
(b) has the base sequence in the F3 zone of target nucleic acid;
(c) have the B2 zone of target nucleic acid at 3 ' end side, have the base sequence in the B1c zone of target nucleic acid at 5 ' end side;
(d) has the base sequence in the B3 zone of target nucleic acid.
(28) like the described Oligonucleolide primers in (25)～(27), it is characterized in that, can increase, to 3 ' end, constitute by the base sequence that is selected from following (a)～(b) from 5 ' end to the base sequence of H5 type avian influenza virus specific:
(a) 5 '-(with the base sequence complementary base sequence of sequence numbering 35)-(base sequence arbitrarily of base several 0～50)-(base sequence of sequence numbering 36)-3 ';
(b) 5 '-(base sequence of sequence numbering 38)-(base sequence arbitrarily of base several 0～50)-(with the base sequence complementary base sequence of sequence numbering 39)-3 '.
(29) detection method of H5 type bird flu virus is characterized in that, uses the described Oligonucleolide primers in (25)～(28), carries out the amplified reaction in the target nucleic acid zone of H5 type bird flu virus.
Like the detection method of (29) described H5 type bird flu virus, it is characterized in that (30) amplified reaction in the target nucleic acid zone of H5 type bird flu virus adopts the LAMP method.
(31) diagnostic method of influenza is characterized in that, through using the described Oligonucleolide primers in (25)～(28), detects the amplification in the target nucleic acid zone of H5 type bird flu virus, and whether diagnosis has the infection of H5 type bird flu virus.
(32) test kit is characterized in that, comprises the described Oligonucleolide primers in (25)～(28) that is used to diagnose influenza.
The present invention also provides following (33)～(40).
(33) according to be selected from any base sequence of 1016～1225 base sequence of the hemagglutinin base sequence of the H7 type bird flu virus of sequence numbering 48 expression or with the Oligonucleolide primers of its complementary base sequence design.
(34), wherein, comprise the oligonucleotide that is selected from following (a)～(c) like (33) described Oligonucleolide primers:
(a) be selected from the base sequence of sequence numbering 49～54 expression or with the oligonucleotide that contains 15 bases of successive at least of its complementary base sequence;
(b) can with the oligonucleotide of aforementioned (a) described oligonucleotide hybridize under stringent condition;
(c) comprise aforementioned (a) or (b) 1 in the described oligonucleotide～several base base sequence of being replaced, lack, insert or adding, oligonucleotide with primer function.
(35) like (33) or (34) described Oligonucleolide primers; It is characterized in that; 3 ' end side from the target nucleic acid of the hemagglutinin of H7 type bird flu virus selects note to do the base sequence zone of F3c, F2c, F1c; Select note to do the base sequence zone of B3, B2, B1 from 5 ' end side, when complementary base sequence note is separately made F3, F2, F1 and B3c, B2c, B1c, constitute by the base sequence that is selected from following (a)～(d):
(a) have the F2 zone of target nucleic acid at 3 ' end side, have the base sequence in the F1c zone of target nucleic acid at 5 ' end side;
(b) has the base sequence in the F3 zone of target nucleic acid;
(c) have the B2 zone of target nucleic acid at 3 ' end side, have the base sequence in the B1c zone of target nucleic acid at 5 ' end side;
(d) has the base sequence in the B3 zone of target nucleic acid.
(36) like the described Oligonucleolide primers in (33)～(35), it is characterized in that, can increase, to 3 ' end, constitute by the base sequence that is selected from following (a)～(b) from 5 ' end to the base sequence of H7 type avian influenza virus specific:
(a) 5 '-(with the base sequence complementary base sequence of sequence numbering 49)-(base sequence arbitrarily of base several 0～50)-(base sequence of sequence numbering 50)-3 ';
(b) 5 '-(base sequence of sequence numbering 52)-(base sequence arbitrarily of base several 0～50)-(with the base sequence complementary base sequence of sequence numbering 53)-3 '.
(37) detection method of H7 type bird flu virus is characterized in that, uses the described Oligonucleolide primers in (33)～(36), carries out the amplified reaction in the target nucleic acid zone of H7 type bird flu virus.
Like the detection method of (37) described H7 type bird flu virus, it is characterized in that (38) amplified reaction in the target nucleic acid zone of H7 type bird flu virus adopts the LAMP method.
(39) diagnostic method of influenza is characterized in that, through using the described Oligonucleolide primers in (33)～(36), detects the amplification in the target nucleic acid zone of H7 type bird flu virus, and whether diagnosis has the infection of H7 type bird flu virus.
(40) test kit is characterized in that, comprises the described Oligonucleolide primers in (33)～(36) that is used to diagnose influenza.
If adopt the present invention; Through making and the oligonucleotide primer that the base sequence of H5 or H7 type avian influenza virus specific is optionally hybridized; With LAMP method amplification base sequence to H5 or H7 type avian influenza virus specific, can highly sensitive and promptly detect H5 or H7 type bird flu virus.
The simple declaration of accompanying drawing
Fig. 1 is the figure of expression H5 type bird flu virus with the result of the specificity test of primer sets; (a) and (b), (c) and (d) result when primer sets A, B, C and D are used in expression respectively; NC representes negative control; H1 representes the New Caledonia hypotype, and H3 representes Panamanian hypotype, and PC representes positive control (H5 type DNA).
Fig. 2 is the figure of expression H5 type bird flu virus with the result of the sensitivity test of primer sets, (a) and (b), (c) and (d) represent use primer sets A, B, C respectively and the result during D, 10
3～10
6The thinning ratio of expression RNA extract.
Fig. 3 is for representing that with the figure of H5 type bird flu virus with the electrophoresis result of the product of primer sets amplification, swimming lane 1 is a 100bp ladder affinity tag, and swimming lane 2 is the sample of LAMP product, and swimming lane 3 is for handling the sample that obtains with the LAMP product with Dde I.
Fig. 4 is the figure of expression H5 type bird flu virus with the result of the cross matching of primer sets, and B-sd representes B/ Shandong/07/97, and B-sh representes B/ Shanghai/361/2002, expression such as AIV-H1 bird flu virus H1 etc.
Fig. 5 is the figure of expression H7 type bird flu virus with the result of the reactive validation test of primer sets, the addition (copy/test) of 250,100,50 expression tRNA, and NC representes negative control.
Fig. 6 is for representing that with the figure of H7 type bird flu virus with the electrophoresis result of the product of primer sets amplification, swimming lane M is a 100bp ladder affinity tag, and swimming lane 1 is the sample of LAMP product, and swimming lane 2 is for handling the sample that obtains with the LAMP product with Pst I.
Fig. 7 is the figure of expression H7 type bird flu virus with the result of the intercrossing test of primer sets; H1 and H3 represent human influenza virus H1 type and H3 type; B-sd representes B/ Shandong/07/97, and B-sh representes B/ Shanghai/361/2002, expression such as AIV-H1 bird flu virus H1 etc.; PC representes positive control, and NC representes negative control.
Fig. 8 is for representing H7 type bird flu virus with the figure of primer sets for reactive result of various strains, (a) expression A/ Holland/219/2003, (b) expression A/ Holland/33/2003,10
5～10
8The thinning ratio of expression RNA extract.
Fig. 9 is for representing H7 type bird flu virus with the figure of primer sets for reactive result of various strains, (a) expression A/ wild duck/Holland/12/00, (b) expression A/ water wild duck/Osaka/1/2001,10
5～10
8The thinning ratio of expression RNA extract.
The best mode that carries out an invention
As the sample that uses among the present invention, can give an example for example sputum, bronchovesicular scavenging solution, nose liquid, nasal cavity liquid draw, nasal cavity scavenging solution, nasal cavity wiping liquid, pharynx wiping liquid, collutory, saliva, blood, serum, blood plasma, cerebrospinal fluid, urine, ight soil, tissue etc. come from the sample of live body of people or other animal of infection bird flu virus under a cloud.What in addition, sample also can adopt the sample that separates cell used in the self-infection experiment etc. and its nutrient solution or come from live body and culturing cell etc. contains viral sample etc.These samples can separate, extracting, concentrate, pre-treatment such as purifying.
The amplification of such nucleic acid can indispensable temperature controlled new nucleic acid TRAP---the loop-mediated isothermal amplification method (No. 00/28082 text of International Publication) that is called as the LAMP method realizes through not receiving in the PCR method of exploitations such as richness.This method is to be annealed to as on the Nucleotide of template and as complementary strand synthetic starting point the time through the 3 ' end that makes self, and combination is annealed to the primer on the ring that at this moment forms, and can realize the nucleic acid amplification of the complementary strand synthesis reaction under the constant temperature.In addition, the LAMP method is to use the high nucleic acid amplification of specificity of 4 primers in 6 zones of identification at least.
Used Oligonucleolide primers is at least 4 kinds of primers of base sequence in totally 6 zones of the base sequence of recognition template nucleic acid in the LAMP method; The zone of B3, B2, B1 is done for the zone of making F3c, F2c, F1c from the note of 3 ' end side with from the note of 5 ' end side in these 6 zones, is called as inner primers F and B and outside primers F and B respectively.In addition, the complementary sequence of F3c, F2c, F1c remembered respectively make F3, F2, F1, the complementary sequence of B3, B2, B1 is remembered respectively made B3c, B2c, B1c.Inner primer is meant " the nucleotides sequence column region that certain is specific " on the recognition objective base sequence; And have the base sequence that is made for synthetic starting point at 3 ' end, have for the oligonucleotide of this primer at 5 ' end simultaneously as the arbitrary region complementary base sequence of the nucleic acid building-up reactions resultant of starting point.Here; The primer that will comprise " base sequence that is selected from F2 " and " being selected from the base sequence of F1c " is called inner primers F (following FIP slightly), and the primer that will comprise " base sequence that is selected from B2 " and " being selected from the base sequence of B1c " is called inner primer B (following BIP slightly).On the other hand, outside primer is meant " being present in than the zone of inner primer identification more near certain specific nucleotides sequence column region of 3 ' end side " on the recognition objective base sequence, and has the oligonucleotide of the base sequence that is made for synthetic starting point.Here, the primer that will comprise " base sequence that is selected from F3 " is called outside primers F (following F3 slightly), and the primer that will comprise " base sequence that is selected from B3 " is called outside primer B (following B3 slightly).Here, the F in each primer representes complementally to combine and provide with the sense strand of detecting target base sequence the primer of synthetic starting point; On the other hand, B representes complementally to combine and provide with the antisense strand of detecting target base sequence the primer of synthetic starting point.Here, more than 10 bases, better be more than 15 bases as the length of the oligonucleotide of primer, can be chemosynthesis or natural oligonucleotide, each primer can be single oligonucleotide, also can be the mixture of multiple oligonucleotide.
In the LAMP method,, can also use other primer, promptly encircle primer except that inner primer with the outside primer.Ring primer (Loop Primer) is meant that the complementary sequence that produces on the same chain based on the amplification resultant of LAMP method is annealed each other and forms under the situation of ring, comprises the 2 kinds of primers (constituting each a kind on each double-stranded chain) with this intra-annular sequence complementary base sequence at its 3 ' end.If use this primer, then nucleic acid synthetic starting point increases, the shortening that can the realization response time and the rising (No. 02/24902 text of International Publication) of detection sensitivity.
Oligonucleotide can pass through the known method manufacturing, for example can carry out chemosynthesis.Perhaps, also can change or connect to the structure of required base sequence with natural nucleic acid with shearings such as Restriction Enzymes.Specifically, can use oligonucleotide synthesizer etc. to synthesize.In addition, can use and have 1～the known method for making of the synthesis method of the oligonucleotide of the base sequence that several base is replaced, lacks, inserted or adds etc. itself.For example, can be separately or appropriate combination use locus specificity sudden change introductory technique, dna homolog recombination method, primer elongation method or PCR method, synthetic described oligonucleotide.
As " the strict hybridization conditions " in this specification sheets, can select generally well-known condition.As stringent condition; Condition below for example can giving an example: containing 50% methane amide, 5 * SSC (150mM NaCl; The 15mM trisodium citrate), in the solution of the DNA of 50mM sodium phosphate (pH7.6), 5 * denhardt solution, 10% T 500 and 20 μ g/ml; After 42 ℃ of one evenings of hybridization, at room temperature in 2 * SSC0.1%SDS, clean once, clean twice at about 65 ℃ down with 0.1 * SSC0.1%SDS.
Influenza virus is a RNA viruses.Template is under the situation of RNA in the LAMP method, through adding ThermoScript II in the reaction solution when template is DNA, can likewise carry out nucleic acid amplification reaction (RT-LAMP method).
The inventor is to can increase for the primer base sequence of the LAMP method of the base sequence of H5 type avian influenza virus specific and combination thereof conscientiously after the research apace; According to the base sequence (with the base sequence of sequence numbering 1 expression) of the hemagglutinin of H5 type bird flu virus, these 4 groups of A, B, C and D below having selected are as primer sets.In addition; The sequence of these primers is different fully with the sequence of primer with the NASBA (based on the amplification of nucleotide sequence, Nucleic Acid Sequence-BasedAmplification) of the detection that is used for H5 type bird flu virus of (for example patent documentation 2) reported.
(primer sets A)
FIP19c:5 '-ACCATATTCCAACTCACTTTTCATAATTTCATTGCTCCAGAATATGC-3 ' (sequence numbering 8)
BIP5:5 '-CAAACTCCAATGGGGGCATGGTGAGAGGGTGTAT-3 ' (sequence numbering 9)
F3m6:5 '-GGAGTTCTTCTGGACAA-3 ' (sequence numbering 4)
B3m:5 '-GTCGCAAGGACTAATCT-3 ' (sequence numbering 10)
LF24:5 '-GAGTCCCCTTTCTTGACAAT-3 ' (sequence numbering 11)
LB1:5 '-GATAAACTCTAGTATGCCA-3 ' (sequence numbering 12)
(primer sets B)
FIP:5 '-GGGCATGTGTAACAGTAACGTTAAACAACTCGACAGAGCA-3 ' (sequence numbering 19)
BIP:5 '-TGGAAAAGACACACAATGGGAACATCCAGCTACACTACAATC-3 ' (sequence numbering 20)
F3:5 '-CAGATTTGCATTGGTTACCA-3 ' (sequence numbering 15)
B3:5 '-CGTCACACATTGGGTTTC-3 ' (sequence numbering 21)
LF:5 '-TTCCATTATTGTGTCAACC-3 ' (sequence numbering 22)
LB8:5 '-CGATCTAGATGGAGTGAAGC-3 ' (sequence numbering 23)
(primer sets C)
FIP:5 '-CACATTGGGTTTCCGAGGAGATCTAGATGGAGTGAAGCC-3 ' (sequence numbering 30)
BIP:5 '-TTCATCAATGTGCCGGAATGGGTTGAAATCCCCTGGGTA-3 ' (sequence numbering 31)
F3:5 '-GGAAAAGACACACAATGGG-3 ' (sequence numbering 26)
B3:5 '-GCTCAATAGGTGTTTCAGTT-3 ' (sequence numbering 32)
LF6:5 '-CCAGCTACACTACAATCTCT-3 ' (sequence numbering 33)
LB6:5 '-TCCAGCCAATGACCTCTG-3 ' (sequence numbering 34)
(primer sets D)
FIP:5 '-TCGCAAGGACTAATCTGTTTGACATACACCCTCTCACCAT-3 ' (sequence numbering 41)
BIP:5 '-TACCCCTCAAAGAGAGAGAAGATCCTCCCTCTATAAAACCTG-3 ' (sequence numbering 42)
F3:5 '-TCTAGTATGCCATTCCACAA-3 ' (sequence numbering 37)
B3:5 '-ACCATCTACCATTCCCTG-3 ' (sequence numbering 43)
LF8:5 '-TCACATATTTGGGGCATTCC-3 ' (sequence numbering 44)
LB8:5 '-AGAGAGGACTATTTGGAGCT-3 ' (sequence numbering 45)
In addition; The inventor is to can increase for the primer base sequence of the LAMP method of the base sequence of H7 type avian influenza virus specific and combination thereof conscientiously after the research apace; According to the base sequence (with the base sequence of sequence numbering 1 expression) of the hemagglutinin of H7 type bird flu virus, the primer sets E below having selected.
(primer sets E)
22FIP:5 '-ACCACCCATCAATCAAACCTTCTATTTGGTGCTATAGCGG-3 ' (sequence numbering 55)
22BIP:5 '-TTCAGGCATCAAAATGCACAAGCCTGTTATTTGATCAATTGCTG-3 ' (sequence numbering 56)
22F3m:5 '-TTCCCGAAATCCCAAA-3 ' (sequence numbering 51)
22B3:5 '-GGTTAGTTTTTTCTATAAGCCG-3 ' (sequence numbering 57)
22-9LF:5 '-CCCATCCATTTTCAATGAAAC-3 ' (sequence numbering 58)
22-9LB:5 '-ACTGCTGCAGATTACAAAAG-3 ' (sequence numbering 59)
The enzyme that uses during nucleic acid is synthetic gets final product not special the qualification so long as have the active template dependency of strand displacement nucleic acid synthetic enzyme.As such enzyme, the Klenow fragment of the Bst archaeal dna polymerase of can giving an example (big fragment), Bca (exo-) archaeal dna polymerase, e. coli dna polymerase I etc. better are Bst archaeal dna polymerase (big fragments).
As the ThermoScript II of using in the RT-LAMP method, RNA is got final product not special the qualification so long as have as the active enzyme of the synthetic cDNA of template.As such enzyme, can give an example AMV, clone's AMV, the ThermoScript II of MMLV and Superscript II, ReverTraAce, Thermoscript etc. better are the ThermoScript II of AMV or clone's AMV.In addition, as the Bca archaeal dna polymerase, have reverse transcriptase activity and these two kinds of active enzymes of dna polymerase activity, then can carry out the RT-LAMP reaction with a kind of enzyme if use.
Enzyme and the ThermoScript II used during nucleic acid is synthetic can obtain by purifying from virus or bacterium etc., also can process through recombinant gene.In addition, these enzymes can carry out changes such as fragmentation or amino acid whose displacement.
The detection of the reacted nucleic acid amplification product of LAMP can be used technique known.For example; Can use the labeled oligonucleotide or the fluorescence intercalator method (Japanese Patent Laid is opened the 2001-242169 communique) of the base sequence that specific recognition amplification obtains to detect, the reaction solution after also can reaction being finished directly carry out agarose gel electrophoresis and easily detect.Through agarose gel electrophoresis, the LAMP amplified production is detected with the different multiple band of base length with being scalariform.In addition, in the LAMP method, because nucleic acid is synthetic, substrate is reacted and the generation magnesium pyrophosphate the also certifiable degree of reaction solution gonorrhoea to naked eyes by mass consumption as the pyrophosphate ion of by product and the mg ion of coexistence.Therefore; Can be through use to reacting this gonorrhoea of determining instrument affirmation that the turbidity rising that finishes in back or the reaction continue to carry out optical observation; For example use conventional spectrophotometer to confirm that the absorbancy of 400nm changes, and also can detect nucleic acid amplification reaction (No. 01/83817 text of International Publication).
All ingredients required when using primer of the present invention to carry out the detection of nucleic acid amplification can make up and test kitization in advance.Specifically, as primer of the present invention or the required various oligonucleotide of ring primer, as 4 kinds of dNTP of nucleic acid synthetic substrate, carry out nucleic acid synthetic archaeal dna polymerase, have the enzyme of reverse transcriptase activity, the damping fluid that the condition that is suitable for enzyme reaction is provided and salt, make the protective material of enzyme and form stableization and reagent that the detection of the resultant of reaction that adopts as required is required provides with the form of test kit.
Embodiment
Below, the embodiment that gives an example specifies the present invention, but the present invention does not receive any qualification of these embodiment.
Embodiment 1:H5 type bird flu virus is with reactive affirmation of primer sets
Reactive affirmation of primer is carried out through following method.The composition of reaction soln that is used for carrying out through the LAMP method nucleic acid amplification is following.In addition, the synthetic trust QIAGEN company of primer, the product that uses OPC (reversed phase column chromatography) purifying to obtain.
20mM?Tris-HCl?pH8.8
10mM?KCl
8mM?MgSO
4
1.4mM?dNTP
10mM(NH
4)
2SO
4
0.8M trimethyl-glycine (SIGMA)
0.1％Tween20
1.6μM?FIP
1.6μM?BIP
0.2μM?F3
0.2μM?B3
0.8μM?LF
0.8μM?LB
AMV ThermoScript II 2U (Finnzyme)
Bst archaeal dna polymerase 16U (NEB)
In above-mentioned reaction soln, add 10
4H5 DNA (the HK/213/03 of copy; Provide by National Institute of Communicable Diseases), carry out RT-LAMP reaction 60 minutes at 62.5 ℃.Use real-time turbidity measurement device LA-320C (Rong Yan chemistry), in real time reaction is detected.Consequently, 4 kinds of primer sets (primer sets A, B, C and D) are confirmed amplification.
In addition, for these 4 groups, use the RNA that extracts from as New Caledonia hypotype (H1N1) of cultivating virus and Panamanian hypotype (H3N2) to carry out the specificity test as template.Fig. 1 is the result's of expression specificity test figure.As shown in Figure 1, use under the situation of each primer sets, all do not find the amplification of H1 type and H3 type.Can know that by The above results all primer sets are all high for the specificity of H5 type.
Then, use the RNA that extracts from as Vietnam/JP1203/04 (H5N1) that cultivates virus, carry out sensitivity test.Because it is not clear to extract the template amount of RNA, therefore use aqua sterilisa dilution 10 with deoxyribonuclease
3～10
6RNA doubly is as template samples.Fig. 2 is the result's of expression sensitivity test figure.When using primer sets A, even dilute 10
5Sample is doubly also confirmed amplification, and sensitivity is the highest.
Embodiment 2: the affirmation of the product that obtains with primer sets amplification with H5 type bird flu virus
LAMP product for obtaining with primer sets A amplification uses the affirmation of electrophoresis and Restriction Enzyme Dde I.Fig. 3 is the figure of expression electrophoresis result.Swimming lane 2 by Fig. 3 can be confirmed the distinctive trapezoidal pattern of LAMP product significantly.In addition, the sample of having handled with Dde I (swimming lane 3) is confirmed to digest.Can know that by above result target sequence is by amplification specifically.
Embodiment 3:H5 type bird flu virus is with the evaluation (intercrossing test) of primer sets
With 18 kinds of the totals of human influenza virus's A/ New Caledonia/20/99 (H1N1), A/ Panama/2007/99 (H3N2), B/ Shandong/07/97 and B/ Shanghai/361/2002 and bird flu virus H1～H15 (except that H5) as sample.Carry out the extracting of RNA from cultivating virus with QIAamp Viral RNA Kit (QIAGEN company) respectively, 5 μ L extracts are used for RT-LAMP reaction (using primer sets A as primer).
Can know by Fig. 4 (a) with (b), not find amplification through all samples of RT-LAMP method.Therefore, confirm the specificity height of RT-LAMP method.
Embodiment 4:H5 type bird flu virus is with the evaluation (sensitivity test) of primer sets
Use the bird flu H5 type strain (CH/ mountain pass 7/04) of confirming infection in 2004 in the mountain pass county and the H5 type strain of confirming to infect in Vietnam in 2004 (VN/JP1203/04) as template samples.Respectively will be from cultivating RNA that viral extracting obtains aqua sterilisa stepwise dilution (10 with deoxyribonuclease
4～10
8), the RT-PCR method is used 10 μ L diluents, and RT-LAMP method (using primer sets A as primer) is used 5 μ L diluents.
The condition of being published on the website of the transmissible disease information center of RT-PCR method modification National Institute of Communicable Diseases is carried out.Promptly; Use commercially available test kit (TaKaRa One Step RNA PCR Kit (AMV)); Carried out reverse transcription reaction 30 minutes at 50 ℃, after 2 minutes, repeat 30 94 ℃ 1 minute, 45 ℃ 1 minute, 72 ℃ circulations of 1 minute 94 ℃ of processing; Carried out lengthening reaction 10 minutes in 72 ℃ again, preserve at 4 ℃.
The primer that uses in the RT-PCR method and the composition of reaction soln are following.
Primer (the length of PCR product: 708bp)
H5515f:5 '-CATACCCAACAATAAAGAGG-3 ' (sequence numbering 46)
H51220r:5 '-GTGTTCATTTTGTTAATGAT-3 ' (sequence numbering 47)
Reaction soln
RNA extract 10 μ L
10 * One Step RNA PCR damping fluid, 5 μ L
10mM?dNTP?5μL
25mM?MgCl
2?10μL
Ribonuclease inhibitor 1 μ L
AMV ThermoScript II 1 μ L
AMV-optimizes Taq 1 μ L
H5?515f(10μM)2μL
H5?1220r(10μM)2μL
The aqua sterilisa of deoxyribonuclease suitably adds and reaction solution is adjusted to 50 μ L
Adopt the result of the amplification of RT-PCR method and RT-LAMP method to gather and be shown in table 1.In the table 1, the ratio of the sample that increases is represented to confirm in the hurdle of RT-LAMP method.In addition, the amplification among the RT-PCR is confirmed electrophoretic result (in the table 1, zero expression can detect amplification, and * expression can't detect amplification) through naked eyes.
[table 1]
When comparing RT-LAMP method and RT-PCR method, all strains all are the sensitivity of RT-LAMP method up to 10～100 times.
Embodiment 5:H7 type bird flu virus is with reactive affirmation of primer sets
Reactive affirmation of primer sets E is carried out through following method.The composition of reaction soln that is used for carrying out through the LAMP method nucleic acid amplification is following.In addition, the synthetic trust QIAGEN company of primer, the product that uses OPC (reversed phase column chromatography) purifying to obtain.
20mM?Tris-HCl?pH8.8
10mM?KCl
8mM?MgSO
4
1.4mM?dNTP
10mM(NH
4)
2SO
4
0.8M trimethyl-glycine (SIGMA)
0.1％Tween20
1.6μM?FIP
1.6μM?BIP
0.2μM?F3
0.2μM?B3
0.8μM?LF
0.8μM?LB
AMV ThermoScript II 2U (Finnzyme)
Bst archaeal dna polymerase 16U (NEB)
On A/ Holland/219/2003 (H7N7) base sequence (fragment that comprises the base sequence shown in the sequence numbering 1) cloning vector of recombinating of (separating the strain that obtains when death occurring), prepare tRNA through responsive transcription in Holland.The tRNA that makes is joined in the above-mentioned reaction soln with the amount of 250,100 or 50 copy/tests,, use real-time turbidity measurement device LA-200 (テ ラ メ Star Network ス), carry out amplified reaction and detection 62.5 ℃ of reactions 35 minutes.
The addition of tRNA is that the situation of 250,100 and 50 copy/tests and the real-time detected result of negative control are shown in Fig. 5.Can know by this result, also detect amplification to 50 copy/tests.
Embodiment 6: the affirmation of the product that obtains with primer sets amplification with H7 type bird flu virus
LAMP product for obtaining with primer sets E amplification uses the affirmation of electrophoresis and Restriction Enzyme Pst I.Fig. 6 is the figure of expression electrophoresis result.M representes the terraced affinity tag of 100bp, and swimming lane 1 is the sample of untreated LAMP product, the sample of swimming lane 2 for the LAMP product is obtained with Pst I digestion.Swimming lane 1 by Fig. 6 can be confirmed the distinctive trapezoidal pattern of LAMP product significantly.In addition, the sample of having handled with Pst I (swimming lane 2) is confirmed to digest.Can know that by above result target sequence is by amplification specifically.
Embodiment 7:H7 type bird flu virus is with the evaluation (intercrossing test) of primer sets
18 kinds of the totals of human influenza virus's A/ New Caledonia/20/99 (H1N1), A/ Panama/2007/99 (H3N2), B/ Shandong/07/97 and B/ Shanghai/361/2002 and bird flu virus H1～H15 (except that H7) as sample, are investigated the specificity of primer.Carry out the extracting of RNA from cultivating virus with QIAamp Viral RNA Kit (QIAGEN company) respectively, the extracting RNA of diluting 100 times is used for the RT-LAMP reaction.In addition, positive control (PC) uses the tRNA of preparation among the embodiment 5, and negative control uses zero(ppm) water.
Can know that by Fig. 7 all samples are not all found amplification.Therefore, confirm the specificity height of primer sets of the present invention.
Embodiment 8:H7 type bird flu virus is with the evaluation (to the reactivity of various strains) of primer sets
4 kinds of H7 type bird flu virus genomes as template samples, are investigated the sensitivity to various viruses.Respectively will be from cultivating RNA that viral extracting obtains aqua sterilisa stepwise dilution (10 with deoxyribonuclease
5～10
8), use 5 μ L diluents.
The result of the real-time detection with each viral genome during as template samples is shown in Fig. 8 and 9.For A/ Holland/219/2003 (H7N7) and A/ Holland/33/2003 (H7N7), can detect to 10
7Doubly dilution (with reference to Fig. 8) for A/ wild duck/Holland/12/2003 (H7N3) and A/ water wild duck/Osaka/1/2001 (H7N7), can detect to 10
6Doubly dilution (with reference to Fig. 9).Can know primer sets of the present invention and above-mentioned 4 kinds of strains reaction by above result.
The possibility of utilizing on the industry
If adopt the present invention, can highly sensitive and promptly detect the H5 type or H7 type bird flu virus.
Sequence table
< 110>Eiken Chemical (EIKEN KAGAKU KABUSHIKI KAISHA)
National Institute of Communicable Diseases (National Institute of Infectious Diseases)
< 120>detection method of H5 type or H7 type bird flu virus
<130>FP05-0385-00
<160>59
<170>PatentIn?version?3.1
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<210>36
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<400>47
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<211>1737
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<400>48
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ttctatgcag?agatgaaatg?gctcctgtca?aacacagaca?atgctgcttt?cccgcaaatg 540
actaagtcat?acaagaacac?aaggaaagac?ccagctctga?taatatgggg?gatccaccat 600
tccggatcaa?ctacagaaca?gaccaagcta?tatgggagtg?gaaacaaact?gataacagtt 660
gggagttcta?attaccaaca?gtcctttgta?ccgagtccag?gagcgagacc?acaagtgaat 720
ggccaatctg?gaagaattga?ctttcattgg?ctgatactaa?accctaatga?cacggtcact 780
ttcagtttca?atggggcctt?catagctcca?gaccgtgcaa?gctttctgag?agggaagtcc 840
atgggaattc?agagtgaagt?acaggttgat?gccaattgtg?aaggagattg?ctatcatagt 900
ggagggacaa?taataagtaa?tttgcccttt?cagaacataa?atagcagggc?agtaggaaaa 960
tgtccgagat?atgttaagca?agagagtctg?ctgttggcaa?caggaatgaa?gaatgttccc 1020
gaaatcccaa?agaggaggag?gagaggccta?tttggtgcta?tagcgggttt?cattgaaaat 1080
ggatgggaag?gtttgattga?tgggtggtat?ggcttcaggc?atcaaaatgc?acaaggggag 1140
ggaactgctg?cagattacaa?aagcacccaa?tcagcaattg?atcaaataac?agggaaatta 1200
aatcggctta?tagaaaaaac?taaccaacag?tttgagttaa?tagacaacga?attcactgag 1260
gttgaaaggc?aaattggcaa?tgtgataaac?tggaccagag?attccatgac?agaagtgtgg 1320
tcctataacg?ctgaactctt?agtagcaatg?gagaatcagc?acacaattga?tctggccgac 1380
tcagaaatga?acaaactgta?cgaacgagtg?aagagacaac?tgagagagaa?tgccgaagaa 1440
gatggcactg?gttgcttcga?aatatttcac?aagtgtgatg?acgactgcat?ggccagtatt 1500
agaaacaaca?cctatgatca?cagcaagtac?agggaagaag?caatacaaaa?tagaatacag 1560
attgacccag?tcaaactaag?cagcggctac?aaagatgtga?tactttggtt?tagcttcggg 1620
gcatcatgtt?tcatacttct?ggccattgca?atgggccttg?tcttcatatg?tgtgaagaat 1680
ggaaacatgc?ggtgcactat?ttgtatataa?gtttggaaaa?acacccttgt?ttctact 1737
<210>49
<211>21
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>49
aaggtttgat?tgatgggtgg?t 21
<210>50
<211>19
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>50
ctatttggtg?ctatagcgg 19
<210>51
<211>16
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>51
ttcccgaaat?cccaaa 16
<210>52
<211>22
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>52
ttcaggcatc?aaaatgcaca?ag 22
<210>53
<211>22
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>53
cagcaattga?tcaaataaca?gg 22
<210>54
<211>22
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>54
cggcttatag?aaaaaactaa?cc 22
<210>55
<211>40
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>55
accacccatc?aatcaaacct?tctatttggt?gctatagcgg 40
<210>56
<211>44
<212>DNA
< 213>artificial
<220>
< 223>primer [
<400>56
ttcaggcatc?aaaatgcaca?agcctgttat?ttgatcaatt?gctg 44
<210>57
<211>22
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>57
ggttagtttt?ttctataagc?cg 22
<210>58
<211>21
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>58
cccatccatt?ttcaatgaaa?c 21
<210>59
<211>20
<212>DNA
< 213>artificial
<220>
< 223>primer
<400>59
actgctgcag?attacaaaag 20
Claims (6)
1. the Oligonucleolide primers group is characterized in that, contains 4 kinds of primers being made up of the base sequence of following (i)-(iv) record, and this primer can increase for the base sequence of H5 type avian influenza virus specific:
(i) base sequence of sequence numbering 8, perhaps, with the base sequence complementary base sequence of sequence numbering 8;
The (ii) base sequence of sequence numbering 9, perhaps, with the base sequence complementary base sequence of sequence numbering 9;
The (iii) base sequence of sequence numbering 4, perhaps, with the base sequence complementary base sequence of sequence numbering 4;
The (iv) base sequence of sequence numbering 10, perhaps, with the base sequence complementary base sequence of sequence numbering 10.
2. Oligonucleolide primers group as claimed in claim 1 is characterized in that, also contain by following (v)-(vi) 2 kinds of primers forming of base sequence of record:
(the v) base sequence of sequence numbering 11; Perhaps with the base sequence complementary base sequence of sequence numbering 11;
(the vi) base sequence of sequence numbering 12; Perhaps with the base sequence complementary base sequence of sequence numbering 12.
3. the purposes of claim 1 or 2 described Oligonucleolide primers groups is characterized in that, is used for the reagent of modulation detection H5 type bird flu virus, and this virus is that amplified reaction with the target nucleic acid zone of carrying out H5 type bird flu virus is a characteristic.
4. purposes as claimed in claim 3 is characterized in that, the amplified reaction in the target nucleic acid zone of H5 type bird flu virus adopts the LAMP method.
5. the purposes of claim 1 or 2 described Oligonucleolide primers groups is characterized in that, is used to modulate the reagent whether diagnosis has the infection of H5 type bird flu virus.
6. test kit is characterized in that, comprises the claim 1 or the 2 described Oligonucleolide primers groups that are used to diagnose influenza.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP318214/2004 | 2004-11-01 | ||
| JP2004318214 | 2004-11-01 | ||
| JP2005148487 | 2005-05-20 | ||
| JP148487/2005 | 2005-05-20 | ||
| PCT/JP2005/019710 WO2006049061A1 (en) | 2004-11-01 | 2005-10-26 | Method of detecting h5 or h7 avian influenza virus |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101601847A Division CN101613700B (en) | 2004-11-01 | 2005-10-26 | Method of detecting H5 or H7 avian influenza virus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101052720A CN101052720A (en) | 2007-10-10 |
| CN101052720B true CN101052720B (en) | 2012-12-26 |
Family
ID=38783491
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800376057A Expired - Fee Related CN101052720B (en) | 2004-11-01 | 2005-10-26 | Method of detecting H5 or H7 avian influenza virus |
| CN2009101601847A Expired - Fee Related CN101613700B (en) | 2004-11-01 | 2005-10-26 | Method of detecting H5 or H7 avian influenza virus |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101601847A Expired - Fee Related CN101613700B (en) | 2004-11-01 | 2005-10-26 | Method of detecting H5 or H7 avian influenza virus |
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| CN (2) | CN101052720B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575649B (en) * | 2008-06-02 | 2011-08-03 | 中国农业科学院兰州兽医研究所 | Quick detection technology for H9 type avian influenza virus |
| CN111218529B (en) * | 2020-03-13 | 2023-06-23 | 湖南融健生物科技有限公司 | Primer composition, kit and method for detecting novel coronaviruses |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040142319A1 (en) * | 2000-10-05 | 2004-07-22 | Yu Albert Cheung-Hoi | Kit for detecting non-pathogenic or pathogenic influenza a subtype h5 virus |
-
2005
- 2005-10-26 CN CN2005800376057A patent/CN101052720B/en not_active Expired - Fee Related
- 2005-10-26 CN CN2009101601847A patent/CN101613700B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040142319A1 (en) * | 2000-10-05 | 2004-07-22 | Yu Albert Cheung-Hoi | Kit for detecting non-pathogenic or pathogenic influenza a subtype h5 virus |
Non-Patent Citations (3)
| Title |
|---|
| M.MUNCH, ET AL,.DETECTION AND SUBTYPING (H5 AND H7) OF AVIANTYPE A INFLUENZA VIRUS BY REVERSETRANSCRIPTION-PCR AND PCR-ELISA.ARCH VIROL146.2001,14687-97. * |
| 吴阳升，等，.一种新的高速快速核酸恒温扩增方法－LAMP法.生物技术14 4.2004,14(4),76-78. |
| 吴阳升,等,.一种新的高速快速核酸恒温扩增方法-LAMP法.生物技术14 4.2004,14(4),76-78. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101613700B (en) | 2011-12-28 |
| CN101613700A (en) | 2009-12-30 |
| CN101052720A (en) | 2007-10-10 |
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