WO2011129220A1 - 試料中の分析対象物質を測定するための検査器具及びそれを用いた分析対象物質の測定方法 - Google Patents
試料中の分析対象物質を測定するための検査器具及びそれを用いた分析対象物質の測定方法 Download PDFInfo
- Publication number
- WO2011129220A1 WO2011129220A1 PCT/JP2011/058537 JP2011058537W WO2011129220A1 WO 2011129220 A1 WO2011129220 A1 WO 2011129220A1 JP 2011058537 W JP2011058537 W JP 2011058537W WO 2011129220 A1 WO2011129220 A1 WO 2011129220A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid sample
- reagent
- reaction chamber
- plane
- inspection instrument
- Prior art date
Links
- 239000012491 analyte Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims description 57
- 238000012360 testing method Methods 0.000 title abstract description 30
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 125
- 239000007788 liquid Substances 0.000 claims abstract description 111
- 238000006243 chemical reaction Methods 0.000 claims abstract description 101
- 239000000084 colloidal system Substances 0.000 claims abstract description 85
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 62
- 238000000691 measurement method Methods 0.000 claims abstract description 38
- 238000002835 absorbance Methods 0.000 claims abstract description 24
- 238000004220 aggregation Methods 0.000 claims abstract description 18
- 230000002776 aggregation Effects 0.000 claims abstract description 18
- 239000000523 sample Substances 0.000 claims description 127
- 238000007689 inspection Methods 0.000 claims description 65
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 40
- 239000000126 substance Substances 0.000 claims description 39
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 36
- 229910052763 palladium Inorganic materials 0.000 claims description 20
- 238000004458 analytical method Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 14
- 239000013076 target substance Substances 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 12
- 230000001678 irradiating effect Effects 0.000 claims description 10
- 230000004520 agglutination Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000010970 precious metal Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 239000012472 biological sample Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 28
- 238000012123 point-of-care testing Methods 0.000 abstract description 7
- 239000000243 solution Substances 0.000 description 26
- 239000000427 antigen Substances 0.000 description 23
- 102000036639 antigens Human genes 0.000 description 23
- 108091007433 antigens Proteins 0.000 description 23
- 239000002244 precipitate Substances 0.000 description 20
- 239000004816 latex Substances 0.000 description 18
- 229920000126 latex Polymers 0.000 description 18
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 17
- 229940098773 bovine serum albumin Drugs 0.000 description 17
- 239000007983 Tris buffer Substances 0.000 description 15
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 15
- 238000002360 preparation method Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 210000004369 blood Anatomy 0.000 description 9
- 239000008280 blood Substances 0.000 description 9
- 102000012192 Cystatin C Human genes 0.000 description 8
- 108010061642 Cystatin C Proteins 0.000 description 8
- 238000005119 centrifugation Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- 238000007639 printing Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 210000002966 serum Anatomy 0.000 description 8
- 101000942118 Homo sapiens C-reactive protein Proteins 0.000 description 7
- 101000922020 Homo sapiens Cysteine and glycine-rich protein 1 Proteins 0.000 description 7
- 102000051143 human CRP Human genes 0.000 description 7
- 239000000725 suspension Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 210000000601 blood cell Anatomy 0.000 description 5
- 102000004169 proteins and genes Human genes 0.000 description 5
- 108090000623 proteins and genes Proteins 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 4
- 102000004856 Lectins Human genes 0.000 description 4
- 108090001090 Lectins Proteins 0.000 description 4
- 206010070834 Sensitisation Diseases 0.000 description 4
- 102000003675 cytokine receptors Human genes 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 239000002523 lectin Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008313 sensitization Effects 0.000 description 4
- 239000000600 sorbitol Substances 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 108020004414 DNA Proteins 0.000 description 3
- 101000912205 Homo sapiens Cystatin-C Proteins 0.000 description 3
- 238000003556 assay Methods 0.000 description 3
- 238000011088 calibration curve Methods 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 102000049632 human CST3 Human genes 0.000 description 3
- 238000003018 immunoassay Methods 0.000 description 3
- -1 mannitol Chemical compound 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 2
- 108090001008 Avidin Proteins 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 108010090804 Streptavidin Proteins 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 229960002685 biotin Drugs 0.000 description 2
- 235000020958 biotin Nutrition 0.000 description 2
- 239000011616 biotin Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 108010057085 cytokine receptors Proteins 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 229940088597 hormone Drugs 0.000 description 2
- 239000005556 hormone Substances 0.000 description 2
- 108091008039 hormone receptors Proteins 0.000 description 2
- 239000000546 pharmaceutical excipient Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- 102000009027 Albumins Human genes 0.000 description 1
- 108020004635 Complementary DNA Proteins 0.000 description 1
- 108020004394 Complementary RNA Proteins 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- MSWZFWKMSRAUBD-UHFFFAOYSA-N beta-D-galactosamine Natural products NC1C(O)OC(CO)C(O)C1O MSWZFWKMSRAUBD-UHFFFAOYSA-N 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 238000010804 cDNA synthesis Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 210000001175 cerebrospinal fluid Anatomy 0.000 description 1
- 239000012501 chromatography medium Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002299 complementary DNA Substances 0.000 description 1
- 239000003184 complementary RNA Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229960002442 glucosamine Drugs 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000010324 immunological assay Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/50273—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the means or forces applied to move the fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54313—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being characterised by its particulate form
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54386—Analytical elements
- G01N33/54387—Immunochromatographic test strips
- G01N33/54388—Immunochromatographic test strips based on lateral flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502715—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
Definitions
- the present invention relates to an inspection instrument for measuring an analyte in a sample and a method for measuring the analyte using the same. More specifically, the present invention is mainly applied in the clinical examination field, and in particular, an analyte in a liquid sample suitable for the so-called POCT field that can be quickly and easily examined at any place such as a patient bedside or an emergency site.
- TECHNICAL FIELD The present invention relates to a test instrument for measuring a precious metal colloid aggregation measurement method and a method for measuring a substance to be analyzed using the same.
- Such immunoassay test instruments are mostly test instruments with BF separation.
- An immunochromatographic test instrument is known as such a test instrument (Patent Document 1).
- This inspection instrument uses, for example, a sheet in which a liquid is movable by capillarity and a first antibody against a substance to be analyzed that may be present in a sample solution fixed to a chromatographic medium.
- the sample solution containing the second antibody labeled with the analyte for example, the second antibody labeled with colloidal gold, is developed from the chromatographic end of the test instrument, and then the immobilized first antibody A complex of the first antibody, the analyte, and the labeled second antibody is captured at the site.
- Patent Document 2 an inspection instrument that transfers a sample via a spatial flow path by pump suction is also known (Patent Document 2).
- This instrument has a sample supply port, a sample processing chamber equipped with a labeled antibody, a measurement chamber equipped with an immobilized antibody, a waste liquid chamber, and a pump connection port, each of which communicates with a flow path.
- the sample is attached to the sample supply port, and the sample is sucked and transferred to the sample processing chamber, where the labeled antibody is released and the analyte in the sample and the labeled antibody react with each other.
- Patent Document 3 a method of combining a closing member capable of opening and closing a flow path and pump pressurization with a similar measurement principle is also known (Patent Document 3).
- Patent Document 3 a method of combining a closing member capable of opening and closing a flow path and pump pressurization with a similar measurement principle.
- this method has a problem that the structure of the inspection instrument becomes complicated.
- a test instrument capable of quantifying a substance to be measured based on a latex immunoagglutination reaction that does not require BF separation is also known in the field of POCT, although there are few development examples (Patent Document 4).
- a dried (dried) antibody-sensitized latex or the like is incorporated into a test instrument.
- the liquid reagent is not a simple natural drying in advance and is a time-consuming and complicated process. It must be manufactured by lyophilization.
- antibody-sensitized particles are originally not completely soluble in water but are only dispersed, the dried antibody-sensitized particles are difficult to redisperse.
- An object of the present invention is to provide a simple test instrument that can accurately measure an analyte in a sample by dry chemistry and a method for measuring an analyte that can be measured in a short time using the same, and is suitable for the POCT field Is to provide a simple inspection instrument and measurement method. Furthermore, since measurement based on the absorbance in the visible region is possible, it can be applied to a device using a general-purpose visible spectrophotometer and can accurately measure an analyte, and a measurement method using the same Is to provide.
- the present inventors examined the development of a simple test instrument that can measure the analyte.
- noble metal colloid was used as the particles for sensitizing the antibody, and it was attached and dried in the reaction chamber of the flow path system inspection instrument, and blood cells were removed from the whole blood using a blood cell separation membrane. It has been found that when pressurized, the dry reagent is easily redispersed, and as a result, the substance to be analyzed can be accurately measured without adding other space movement processing means such as rotating operation and vibration.
- the present invention has been completed by further research based on this finding.
- An inspection instrument for measuring a substance to be analyzed in a liquid sample by a noble metal colloid agglutination measurement method; having a reaction chamber for reacting at least a liquid sample with a reagent, and at least a part of a surface constituting the reaction chamber And the reagent is a reagent capable of measuring a substance to be analyzed by a noble metal colloid aggregation measurement method; a supply unit for supplying a liquid sample; and a liquid supplied to the supply unit A flow path for transporting the sample to the reaction chamber is provided; the liquid sample supplied to the supply unit is transferred to the reaction chamber via the flow path, and the dried and attached reagent is brought into contact with the liquid sample to obtain a liquid sample.
- the Inspection equipment that can generate a pressure difference between the supply section and the reaction chamber for dispersion in it; [2].
- the reagent capable of measuring the analyte by the noble metal colloid agglutination measurement method contains a partner-sensitized noble metal colloid that specifically binds to the analyte, or the same substance-sensitized noble metal colloid as the partner and the analyte.
- the reaction chamber has a first plane, a second plane opposite to the first plane, and a third plane that is in contact with each of the first plane and the second plane and forms a space between the first plane and the second plane.
- a reagent containing a partner-sensitized noble metal colloid that specifically binds to the analyte is dry-attached to the first plane or the second plane opposite thereto, or In the reagent containing the same substance-sensitized noble metal colloid as the analyte, the partner is dry-attached to either the first plane or the second plane opposite to the first plane, and the other plane is the same as the analyte
- the inspection instrument according to any one of [1] to [3], wherein the noble metal colloid is a gold colloid or a palladium colloid; [5].
- the inspection instrument according to any one of [1] to [5], wherein a pressure difference is generated by pressurization; [7].
- the inspection instrument according to any one of [1] to [6], wherein the liquid sample supplied to the supply unit can be pressurized by the pressurization unit and transferred into the reaction chamber; [8].
- the inspection instrument according to any one of [1] to [7], wherein the liquid sample is a biological sample and the analysis target substance is a biological component; [9].
- a liquid sample suspected of containing the substance to be analyzed is supplied to the supply part of the inspection instrument according to any one of [1] to [9] above, and then a pressure difference is generated between the supply part and the reaction chamber.
- the present invention relates to an apparatus for measuring a target substance.
- a substance to be analyzed in a liquid sample can be accurately measured using a simple inspection instrument by dry chemistry. Furthermore, since measurement based on absorbance in the visible region is possible, it can be applied to a device using a general-purpose visible spectrophotometer and can accurately measure an analysis object in a short time.
- the instrument and measurement method are suitable for the POCT field.
- dry chemistry is a reagent for measuring a substance to be analyzed prepared in a test instrument in a dry state, and when a liquid sample is added thereto, moisture in the sample is removed as a solvent.
- the reagent is dispersed and the liquid sample and the dispersed reagent react in the reaction chamber of the inspection instrument.
- the inspection instrument of the present invention is an inspection instrument for measuring an analyte in a liquid sample by a noble metal colloid aggregation measurement method; it has a reaction chamber for reacting at least a liquid sample with a reagent, and constitutes a reaction chamber
- the reagent is dry-attached to at least a part of the surface, and the reagent is capable of measuring the analyte by a noble metal colloid aggregation measurement method, for example, a partner-sensitized noble metal that specifically binds to the analyte
- a reagent containing a colloid or the same substance-sensitized noble metal colloid as the partner and the analyte a supply unit for supplying a liquid sample; and a liquid sample supplied to the supply unit to the reaction chamber
- a liquid sample supplied to the supply unit is transferred to the reaction chamber via the flow channel, and the reagent adhered after drying is brought into contact with the liquid sample. It can generate a pressure differential in the
- the inspection instrument of the present invention includes, for example, a supply unit for supplying a liquid sample; a reaction chamber provided in the inspection instrument for reacting the liquid sample with a reagent; and a liquid sample supplied to the supply unit is transferred to the reaction chamber
- a flow path for The flow path and the reaction chamber are connected to the outside of the inspection instrument through a porous film that is air permeable and impermeable to liquid,
- the reaction chamber has a first plane, a second plane opposite to the first plane, and a third plane that is in contact with each of the first plane and the second plane and forms a space between the first plane and the second plane.
- the flow path and the reaction chamber are connected by forming a connection hole in the third surface,
- the reagent is dry adhered to at least one surface of the plane, It is an inspection instrument that pressurizes a liquid sample supplied to a supply unit by a pressurization unit provided in the supply unit and transfers the sample to a reaction chamber.
- the liquid sample is not particularly limited as long as it contains a liquid, but a biological sample is preferable, and examples thereof include a blood sample, urine, and cerebrospinal fluid.
- blood samples include serum, plasma, whole blood and the like.
- a membrane for separating the solid from the liquid sample is provided between the supply unit and the flow path in the present invention in order to perform solid-liquid separation. It is preferable.
- membrane separation using a pressure difference, preferably pressing, for example, separating and removing solid components such as blood cells, while passing only the liquid sample through the flow path.
- a pressure difference preferably pressing, for example, separating and removing solid components such as blood cells
- the noble metal colloid can be dispersed in the liquid sample by colliding and dissolving the liquid sample against the dry-adhered reagent, and the substance to be analyzed in the liquid sample can be measured by the noble metal colloid aggregation method.
- whole blood contains a large amount of complex biological components and solids such as blood cells, and therefore it is usually difficult to accurately measure only the substance to be analyzed therein.
- the inspection instrument of the present invention has an advantage that it can be applied without diluting a liquid sample with a reagent or the like. That is, when the liquid sample is a biological sample such as a blood sample, the viscosity of the sample is high and it is difficult to disperse the colloid, but in the present invention, the sample is not diluted by using a noble metal colloid or the like. Analytes can be measured.
- the noble metal colloid aggregation measurement method is a method using a noble metal colloid instead of latex in the latex aggregation measurement method.
- a noble metal colloid reagent in which a specific component is sensitized and a sample are mixed. It means a method of causing an agglutination reaction and measuring the substance to be analyzed from the degree of aggregation.
- the reagent is not particularly limited as long as it is a reagent capable of measuring a substance to be analyzed by a noble metal colloid aggregation measurement method.
- a reagent include a reagent containing a partner-sensitized noble metal colloid that specifically binds to the analyte, and a reagent containing the same substance-sensitized noble metal colloid as the partner and the analyte.
- the partner that specifically binds to the analysis target substance include an antibody against the antigen when the analysis target substance is an antigen, and an antigen against the antibody when the analysis target substance is an antibody.
- analyte and the partner that specifically binds to it include, for example, biotin and avidin or streptavidin, lectin and lectin-binding saccharide, hormone and hormone receptor, cytokine and cytokine receptor, protein A and IgG, Examples thereof include a combination of DNA or RNA and DNA or RNA complementary to them.
- the reagent will be described by taking as an example the case where the substance to be analyzed is an antigen such as CRP or cystatin C and the partner thereof is an antibody such as an anti-CRP antibody or anti-cystatin C antibody.
- the substance to be analyzed is an antibody
- the antigen and the antibody may be reversed in the description.
- a partner (antibody) -sensitized noble metal colloid that specifically binds to the analyte (antigen) is used as a reagent, the immunoaggregation complex (antigen-antibody complex) produced in the reaction is analyzed by the analyte (antigen). ) Will increase according to the amount.
- the concentration of the analyte (antigen) can be measured from the degree of increase.
- an immunoaggregate complex (antigen antibody) The complex) becomes smaller depending on the amount of the substance to be analyzed (antigen).
- an immunoagglutination inhibition method is a method in which an antigen sensitized to a noble metal colloid as a reagent is agglutinated with an antibody of the reagent.
- the agglutination reaction between the antigen-sensitized noble metal colloid of the reagent and the antibody of the reagent is inhibited, and as a result, the aggregation becomes small and the amount thereof decreases.
- biotin and avidin or streptavidin, lectin and lectin-binding saccharide, hormone and hormone receptor, cytokine and cytokine receptor, protein A and IgG, DNA or RNA Even in the case of using a combination of complementary DNA or RNA, it can be measured by a noble metal colloid aggregation measurement method in the same manner as the above-described antigen or antibody and antibody or antigen combination.
- Excipients may be added to the reagents used in the present invention.
- examples of the excipient include proteins such as albumin, amino acids such as glycine, alcohols such as mannitol, and hydrocarbon compounds such as glucose.
- As the stabilizer a substance that easily retains water in the molecule and a saccharide such as sorbitol are generally preferable.
- Substance-sensitized precious metal colloid reagents such as antibody-sensitized precious metal colloids and antigen-sensitized precious metal colloids as reagents can be prepared, for example, as follows.
- a sensitization target substance such as an antibody is added to a noble metal colloid solution, and the mixture is prepared with a buffer solution and allowed to stand at room temperature, and then a BSA coating solution is added. Subsequently, centrifugation is performed, the supernatant is discarded, and the precipitate is collected.
- a BSA coating solution is added to the precipitate to suspend the precipitate, and sonication is performed to completely disperse the precipitate.
- the suspension is added to the precipitate obtained by centrifugation and suspended to obtain a substance-sensitized noble metal colloid.
- sorbitol, a surfactant and the like are added to the obtained substance-sensitized noble metal colloid, and optionally other necessary components can be added to prepare a reagent capable of measuring the substance to be analyzed by the noble metal colloid aggregation measurement method.
- a reagent capable of measuring an analysis target substance by a noble metal colloid aggregation measurement method is dried and attached to at least a part of the surface constituting the reaction chamber.
- the liquid reagent may be applied to at least a part of the surface constituting the reaction chamber and then dried.
- the drying of the liquid reagent include natural drying and freeze drying.
- the natural drying method is preferable from the viewpoint of reagent stability.
- Reagents for measuring the analyte can be combined into one reagent and dried and adhered to the surface of the reaction chamber of the test instrument. However, considering the stability of the reagent, it is divided into two reagents. Then, they may be attached to the first plane and the second plane, respectively. When a reagent containing a partner for the analysis target substance and a reagent containing the same substance-sensitized noble metal colloid as the analysis target substance is used as the reagent, it is preferable that the first plane and the second plane are separately dried and attached.
- a noble metal colloid is used.
- the noble metal used for the noble metal colloid include gold, silver, platinum, and palladium. Gold, silver, or palladium is preferable, gold or palladium is more preferable, and gold is more preferable. This is because, when a gold colloid or a palladium colloid, particularly a gold colloid, is used, the analyte can be measured very accurately by using the inspection instrument of the present invention.
- the maximum absorption wavelength of colloidal gold is 500 nm or more.
- gold colloid When gold colloid is used as a noble metal colloid in the present invention, light is irradiated to the mixture obtained after agglutination reaction such as immunoaggregation reaction, and transmitted light or reflected light.
- agglutination reaction such as immunoaggregation reaction
- transmitted light or reflected light When a substance in a liquid sample is measured based on a change in absorbance derived from light, it can be measured even at a wavelength of 390 to 420 nm.
- the maximum absorption wavelength of the palladium colloid is 250 nm or less.
- the particle diameter of the noble metal colloid is usually 1 to 200 nm, preferably 20 to 150 nm.
- the noble metal colloid a colloid that is easily dispersed when contacting or colliding with a liquid sample due to a pressure difference is desirable, and the noble metal fine particles may be protected by a protective component.
- Such a noble metal colloid is not particularly limited as long as it can be dispersed when it comes into contact with a liquid sample due to the pressure difference of the present invention, but a quaternary ammonium salt type noble metal complex compound (Japanese Patent Laid-Open No.
- a high Noble metal colloid protected with a molecular pigment dispersant JP-A-11-76800, JP-A-11-80647
- noble metal colloid using sodium citrate as a dispersant JP-A-10-66861
- peptide Noble metal colloid protected with an oxide of the above or an oxide of a glucosamine compound International Publication WO2005 / 023468 pamphlet
- Noble metal colloid protected with a compound having an amino group and a carboxyl group such as amino acid Japanese Patent Laid-Open No. 2002-245854
- the flow path and the reaction chamber are connected to the outside of the inspection instrument through a porous film having air permeability and non-liquid permeability.
- a pressure difference is generated between the reaction chamber and the supply unit, and as a result, a liquid sample is sent from the supply unit to the reaction chamber via the flow path to disperse the dry reagent.
- Any means can be used as long as it can be applied.
- a pressurizing unit and a pulling unit can be exemplified, but it is preferable to use a pressurizing unit in order to make the inspection instrument a simple structure. That is, it is preferable that the sample supplied to the supply unit is pressurized by a pressurization unit provided in the supply unit so that the sample can be transferred into the reaction chamber.
- a pressure difference can be generated by pumping through a membrane or substance that allows gas to pass through the reaction chamber but not liquid.
- the upper and lower surfaces of the reaction chamber are preferably transparent. That is, it is preferable that the reaction chamber also serves as the measurement chamber. In this case, it is preferable to use a visible partial photometer in order to irradiate the reaction chamber when irradiating light to the mixed solution. Therefore, it is preferable that at least a part of the upper and lower surfaces of the reaction chamber is transparent.
- the absorbance change after the reaction is measured using a visible partial photometer that irradiates light from above and reads the change in absorbance derived from transmitted light or reflected light, and the analyte is analyzed based on the increase or decrease in the change. It can be quantified.
- the measurement method of the present invention may be used as an apparatus in combination with two visible partial photometers for irradiating light to a reaction chamber and reading transmitted light or reflected light in addition to the inspection instrument of the present invention.
- the apparatus may include a pump that constitutes a pressurizing unit that pressurizes the supply unit.
- the measurement method of the present invention uses the inspection instrument of the present invention described in detail above to supply a liquid sample to the supply part of the inspection instrument of the present invention, and then generates a pressure difference between the supply part and the reaction chamber. Obtained by allowing the liquid sample to contact the reagent in the reaction chamber, dispersing the reagent in the liquid reagent, and reacting the analyte in the liquid sample with the reagent.
- This is a method for measuring a substance to be analyzed in a liquid sample by irradiating light to the liquid mixture and measuring the substance to be analyzed in the liquid sample based on a change in absorbance derived from transmitted light or reflected light.
- the state of the sensitized precious metal colloid changes due to an antigen-antibody reaction or the like, and as a result, when light is irradiated before and after the reaction, a change in absorbance derived from transmitted light or reflected light occurs.
- Data before the reaction can be measured using a sample that does not contain the analyte as a sample, and the concentration of the analyte can be determined from the difference in absorbance before and after the reaction.
- the wavelength of light to be irradiated is preferably 340 to 800 nm, and more preferably 390 to 420 nm. This is because 390 to 420 nm has versatility as a light source used for dry chemistry.
- a case where an antibody-sensitized noble metal colloid is used as an analysis target substance will be described as an example (in the case of antibody measurement, the antigen and the antibody may be reversed).
- the noble metal colloid is a gold colloid
- the antibody-sensitized gold colloid solution of the reagent usually has a maximum absorption wavelength of 500 nm or more.
- the antibody-sensitized gold colloid solution reacts with the antigen (substance to be analyzed) in the vicinity of the maximum absorption wavelength, a large change in absorbance occurs.
- the antibody-sensitized gold colloid solution undergoes a change in absorbance when reacted with an antigen.
- the noble metal colloid is a palladium colloid
- the maximum absorption wavelength of the antibody-sensitized palladium colloid solution is usually 250 nm or less, and when it reacts with the antigen, a large change in absorbance occurs near this maximum absorption wavelength.
- the absorbance changes when the antibody-sensitized palladium colloid solution reacts with the antigen.
- the concentration of the antigen can be quantified from the degree of change in absorbance due to the reaction between the liquid sample such as the antigen-antibody reaction and the reagent. Even when other combinations are used as the analyte and the partner that specifically binds to the substance to be analyzed, it can be measured by the noble metal colloid aggregation measurement method in the same manner as described above.
- the reaction chamber when the reagent is dissolved and reacted with a liquid sample, it can be carried out, for example, by reacting at 20 to 40 ° C., preferably around 37 ° C.
- the inspection instrument can be implemented without applying a rotation operation or a vibration operation, that is, without particularly moving the space. That is, in the present invention, except that a pressure difference is generated between the supply part of the test instrument and the reaction chamber, the dry reagent is dispersed without moving the test instrument itself without any physical movement or operation from the outside. Reactions such as reactions can be carried out. In the measurement method of the present invention, it is not necessary to perform BF separation. As a result, the analysis target substance in the sample can be accurately measured using a very simple inspection instrument.
- FIG. 1 is a longitudinal sectional view of the inspection instrument
- FIG. 2 is a top view of the inspection instrument
- FIG. 3 is an exploded perspective view of the inspection instrument.
- the inspection instrument includes a first plate 1, a printing surface 1 (reference numeral 2 in the figure), an intermediate plate 6 formed of a porous film, a printing surface 2 (reference numeral 3 in the figure), and a first plate.
- the two plates 4 have a structure in which they are stacked and integrated in the vertical direction.
- a circular sample supply unit 7 is formed on the first plate 1 on the upper layer side.
- the printed surface is a black layer, there is no printed surface in the portion for applying the dry reagent, so that a recess is formed and the dry reagent can be applied to the recess.
- the printing surface 1 (printing surface 2) may be formed on one surface of the first plate 1 (second plate 4) or the intermediate plate 6 by coating, screen printing, or the like, and is formed as a film independent of these plates. After that, it may be laminated between these plates.
- a bottomed cylindrical plug 8 is detachably provided around the upper portion of the sample supply unit 7.
- the intermediate plate 6 is made of a non-liquid-permeable and air-permeable porous material such as a tetrafluoroethylene resin (PTFE resin).
- PTFE resin tetrafluoroethylene resin
- An intermediate plate 6 is provided between the first plate 1 and the second plate 4 and bonded via the printing surface 1 (2) and the printing surface 2 (3).
- the intermediate plate 6 is provided with a liquid reagent flow path 10, and a reaction chamber 11 is provided through the flow path 10. Between the sample supply unit 7 and the flow path 10, there is provided a porous film 9 having air permeability and liquid permeability.
- a predetermined amount of reagent is applied to one or both of the first plane and the second plane of the reaction chamber 11 and dried and attached, and dry reagent 1 (reference numeral 5 in the figure) and / or dry reagent 2 (reference numeral 12 in the figure). ) Is formed.
- a liquid sample is supplied from the sample supply unit 7.
- the plug 8 is put on the sample supply unit 7 and, for example, the plug 8 is pressurized with a finger.
- the air in the reaction chamber 11 and the flow path 10 is discharged to the outside from the intermediate plate 6, and the liquid sample is sent into the reaction chamber 11.
- the reagent is dried and attached to either or both of the first plane and the second plane of the reaction chamber 11, and when the liquid sample is transported into the space of the reaction chamber 11, the reagent is contained in the liquid sample. Is dispersed, and the reaction between the liquid sample and the reagent starts. Since the sample and the reagent are mixed in one space, they are mixed uniformly.
- the liquid mixture after the reaction between the liquid sample and the reagent in the reaction chamber 11 can be measured using transmitted light or reflected light.
- the entirety of the first plate 1 and the second plate 4 is formed of a light-transmitting resin, and after the reaction between the reagent and the liquid sample in the reaction chamber 11, Measurement may be performed by irradiating transmitted light having a wavelength of 405 nm from the lower side of the second plate 4 toward the first plate 1 and absorbing the transmitted light in the reaction chamber 11.
- Example 1 Method for measuring human CRP using gold colloid according to the present invention Method 1) Preparation of anti-human CRP antibody-sensitized gold colloid Sensitization of anti-human CRP antibody to gold colloid was performed as follows. 10 mL of a solution prepared by adjusting the anti-human CRP antibody to 0.2 mg / mL with Tris buffer solution is added to 10 mL of a colloidal gold solution having an average particle size of 50 nm (manufactured by Nacalai Co., Ltd., protected gold colloid solution) for 15 minutes at room temperature.
- Example 2 Method for measuring human cystatin C using gold colloid according to the present invention
- Method 1) Preparation of anti-human cystatin C antibody-sensitized gold colloid
- Sensitization of anti-human cystatin C antibody to gold colloid was carried out as follows. After adding 3 mL of a solution prepared by adjusting the anti-human cystatin C antibody to a concentration of 150 ⁇ g / mL with Tris buffer solution in 9 mL of a colloidal gold solution having an average particle size of 50 nm (manufactured by Wine Red Chemical Company), the mixture was allowed to stand at room temperature for 15 minutes 9 mL of BSA coating solution was added.
- Example 3 Method for measuring human CRP using palladium colloid according to the present invention
- Method 1) Preparation of anti-human CRP antibody-sensitized palladium colloid Sensitization of anti-human CRP antibody to palladium colloid was carried out as follows. 8 mL of an anti-human CRP antibody solution adjusted with a Tris buffer so that the protein concentration is 0.2 mg / dL is added to 8 mL of a palladium colloid solution (manufactured by Wine Red Chemical Co., Ltd.) having an average particle size of 76 nm, and left at room temperature for 15 minutes. After that, 8 mL of the BSA coating solution was added and allowed to stand for 15 minutes.
- a palladium colloid solution manufactured by Wine Red Chemical Co., Ltd.
- the reagents and samples used are as follows.
- Reagent for colloidal palladium preparation BSA coating solution Tris 10 mM pH 9.2
- BSA bovine serum albumin
- PEG average molecular weight 20,000
- Tris buffer Tris 10 mM pH 9.2
- Comparative Example 1 Measurement of human CRP using other than precious metal colloid
- An anti-human CRP antibody-sensitized latex (polystyrene polymer) reagent using latex instead of the precious metal colloid was prepared, and the same experiment as in Example 1 was performed.
- the absorbance caused by the turbidity during photometry was inhibited by the scattered light of the latex, and the absorbance could not be obtained depending on the concentration.
- the latex reagent is poorly dispersed and diffusible, and it was impossible to completely disperse and diffuse the dried particles after supplying the specimen.
- Dispersion and diffusibility problems are the same even when colored latex particles that do not easily generate scattered light are used, and cannot be applied as a dry reagent. Moreover, in the examination of the dry reagent using the TIA method, the change in absorbance obtained was extremely small, and a low concentration protein such as CRP could not be quantified.
- the analyte substance in the liquid sample can be accurately measured using a simple examination instrument by dry chemistry. Furthermore, since measurement based on absorbance in the visible region is possible, it can be applied to a device using a general-purpose visible spectrophotometer and can accurately measure an analysis object in a short time.
- the instrument and measurement method are suitable for the POCT field.
Landscapes
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Urology & Nephrology (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- General Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Cell Biology (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Pathology (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
そのような検査器具として、イムノクロマト検査器具が知られている(特許文献1)。この検査器具は、例えば、液体が毛管現象で移動可能な多孔質材であるシート上に、試料溶液中に存在しうる分析対象物質に対する第一抗体をクロマトグラフ媒体に固定したものを用いる。その検査器具のクロマトの末端から該分析対象物質に対する標識化された第二抗体、例えば金コロイドで標識化された第二抗体を含む該試料溶液を展開させ、次いで、固定化された第一抗体部位に、第一抗体と分析対象物質と標識第二抗体との複合体を捕捉させる。未反応の標識抗体は下流に移動してしまうため、固定化抗体部位には、分析対象物質が試料中に存在する場合にのみ、金コロイド等による着色が観察される。しかし、この方法は、もともと金コロイド等の着色があるかどうかを目視で分析対象物質の有無を判断するだけであり、定量的に測定することはできないという問題があった。
その問題を解決するため、同様な測定原理において、流路開閉可能な閉塞部材とポンプ加圧とを組み合わせる方法も知られている(特許文献3)。しかし、この方法は、検査器具の構造が複雑になるという問題があった。
[1].液状試料中の分析対象物質を貴金属コロイド凝集測定法により測定するための検査器具であって;少なくとも液状試料を試薬と反応させる反応室を有し、反応室を構成する面の少なくとも一部に試薬が乾燥付着されており、かつ、試薬が、分析対象物質を貴金属コロイド凝集測定法で測定可能な試薬であり;さらに、液状試料を供給するための供給部;およびその供給部に供給された液状試料を反応室まで移送するための流路を備え;供給部に供給された液状試料を、流路を経由して反応室内に移送させて乾燥付着された試薬を液状試料に接触させて液状試料中に分散させるための供給部と反応室に圧力差を発生させうる、検査器具;
[2].分析対象物質を貴金属コロイド凝集測定法で測定可能な試薬が、分析対象物質に特異的に結合するパートナー感作貴金属コロイドを含む試薬、または該パートナーと該分析対象物質と同じ物質感作貴金属コロイドを含む試薬である、上記[1]に記載の検査器具;
[3].反応室は、第1の平面、これに対向する第2の平面、および第1の平面および第2の平面それぞれに接し第1の平面と第2の平面との間に空間を形成する第3の面で形成されており、分析対象物質に特異的に結合するパートナー感作貴金属コロイドを含む試薬が、第1の平面またはこれに対向する第2の平面に乾燥付着され、あるいは、該パートナーと該分析対象物質と同じ物質感作貴金属コロイドを含む試薬において、該パートナーが第1の平面またはこれに対向する第2の平面のいずれかに乾燥付着され、その他の平面に該分析対象物質と同じ物質感作貴金属コロイドが乾燥付着された、上記[1]または[2]に記載の検査器具;
[4].貴金属コロイドが金コロイドまたはパラジウムコロイドである、上記[1]から[3]のいずれかに記載の検査器具;
[5].流路および反応室は、通気性があり且つ非通液状性の多孔性膜を介して検査器具外部と接続されている、上記[1]から[4]のいずれかに記載の検査器具;
[6].加圧により圧力差を発生させる、上記[1]から[5]のいずれかに記載の検査器具;
[7].供給部に供給された液状試料を、加圧部によって加圧して反応室内に移送可能な、上記[1]から[6]のいずれかに記載の検査器具;
[8].液状試料が生体試料であり、分析対象物質が生体成分である、上記[1]から[7]のいずれかに記載の検査器具;
[9].供給部と流路の間に、液状試料から固体を分離するための膜を有する、上記[1]から[8]のいずれかに記載の検査器具;
[10].分析対象物質を含むと疑われる液状試料を、上記[1]から[9]のいずれかに記載の検査器具の供給部に供給し、次いで、供給部と反応室に圧力差を発生させて流路を経由して液状試料を反応室に移送させ、反応室中の試薬に液状試料を接触させて試薬を液状試料中に分散させ、液状試料中の分析対象物質を試薬と反応させ、得られる混合液に光を照射して透過光または反射光由来の吸光度変化に基づいて液状試料中の分析対象物質を測定する、液状試料中の分析対象物質の測定方法;
[11].混合液に光を照射する際、反応室に照射する、上記[10]に記載の測定方法;
[12].照射する光の波長が340~800nmの範囲内である、上記[10]または[11]に記載の測定方法;
[13].照射する光の波長が390~420nmの範囲内である、上記[12]に記載の測定方法;および
[14].上記[1]から[9]のいずれかに記載の検査器具に加えて、反応室に光を照射し透過光または反射光を読み取るための可視部分光光度計を組み合わせた、液状試料中の分析対象物質を測定するための装置
に関する。
流路および反応室は、通気性があり且つ非通液状性の多孔性膜を介して検査器具外部と接続されており、
反応室は、第1の平面、これに対向する第2の平面、および第1の平面および第2の平面それぞれに接し第1の平面と第2の平面との間に空間を形成する第3の面で形成されており、
流路と反応室とは、第3の面に連結孔が形成されることにより、連結されており、
平面の少なくとも一つの面に試薬が乾燥付着されており、
供給部に供給された液状試料を供給部に設けられた加圧部によって加圧して、反応室内に移送する、検査器具である。
血液試料としては、血清、血漿、全血等を例示できる。本発明において供給部と流路の間に、液状試料から固体を分離するための膜を有することが好ましい。特に液状試料が全血等で、血球等の固形成分を含む場合は、固液分離をするため、本発明において供給部と流路の間に、液状試料から固体を分離するための膜を有することが好ましい。
膜を用いる場合、液状試料を供給部に適用した後、圧力差、好ましくは押圧を利用して膜分離、例えば、血球等の固形分を分離除去しながら、液状試料のみを流路を経由して反応室に送り込む。その結果、液状試料を、乾燥付着された試薬に衝突させて溶解させることにより貴金属コロイドを液状試料中に分散させ液状試料中の分析対象物質を貴金属コロイド凝集法にて測定することができる。一般に、全血は、多量の複雑な生体成分や血球等の固体を含んでいるのでその中の分析対象物質のみを正確に測定することは通常困難である。しかし、本発明においては圧力差による膜分離を用いる場合、指先等から簡単に採取可能な全血を希釈することなく全血中の分析対象物質を測定することができる。このように、本発明の検査器具においては、液状試料を試薬等で希釈することなく適用できる長所を有する。すなわち、液状試料が、血液試料等の生体試料の場合、その試料の粘性が高くなりコロイドを分散させにくいにもかかわらず、本発明においては、貴金属コロイド等を用いることにより試料を希釈することなく分析対象物質を測定可能である。
そのような試薬として、分析対象物質に特異的に結合するパートナー感作貴金属コロイドを含む試薬、該パートナーと該分析対象物質と同じ物質感作貴金属コロイドを含む試薬を例示できる。分析対象物質に特異的に結合するパートナーとは、分析対象物質が抗原の場合にはその抗原に対する抗体、分析対象物質が抗体の場合は、その抗体に対する抗原を例示できる。分析対象物質とそれに特異的に結合するパートナーとの他の組み合わせとしては、例えば、ビオチンとアビジンやストレプトアビジン、レクチンとレクチン結合性糖類、ホルモンとホルモンレセプター、サイトカインとサイトカインレセプター、プロテインAとIgG、DNAもしくはRNAとそれらに相補的なDNAもしくはRNA等の組み合わせが挙げられる。
試薬として分析対象物質(抗原)に特異的に結合するパートナー(抗体)感作貴金属コロイドを用いる場合は、反応中で生成される免疫凝集複合体(抗原抗体複合体)が、分析対象物質(抗原)の量に応じて大きくなる。その大きくなる度合いから分析対象物質(抗原)の濃度を測定できる。
一方、試薬として該パートナー(抗体)と該分析対象物質(抗原)と同じ物質(抗原)感作貴金属コロイドとの両方を含む試薬を用いる場合、反応中で生成される免疫凝集複合体(抗原抗体複合体)が、分析対象物質(抗原)の量に応じて小さくなる。これは一般的に免疫凝集阻止法ともよばれ、試薬としての貴金属コロイドに感作した抗原と、試薬の抗体とを凝集反応させる方法である。この方法では、試料の抗原が測定系内に入ると、試薬の抗原感作貴金属コロイドと試薬の抗体の凝集反応は阻害され、結果的に凝集が小さくなり、その量が減少する。
分析対象物質とそれに特異的に結合するパートナーとして、例えば、ビオチンとアビジンやストレプトアビジン、レクチンとレクチン結合性糖類、ホルモンとホルモンレセプター、サイトカインとサイトカインレセプター、プロテインAとIgG、DNAもしくはRNAとそれらに相補的なDNAもしくはRNA等の組み合わせを用いる場合にも、上記した抗原もしくは抗体と抗体もしくは抗原の組み合わせと同様にして、貴金属コロイド凝集測定法により測定することができる。
本発明に用いる試薬には、賦形剤、安定化剤、緩衝剤、界面活性剤を加えてもよい。
上記賦形剤としては、例えば、アルブミン等の蛋白質、グリシン等のアミノ酸、マンニトール等のアルコール類、グルコース等の炭化水素化合物を例示できる。
安定化剤としては、水を分子に保持しやすい物質、ソルビトール等の糖類が一般的には好ましい。
本発明において、貴金属コロイドの粒径は、通常、1~200nm、好ましくは20~150nmである。貴金属コロイドとしては、圧力差により液状試料と接触または衝突したとき、分散容易なものが望ましく、貴金属微粒子が保護成分により保護されていてもよい。
そのような貴金属コロイドとしては、本発明の圧力差により液状試料と接触したときに分散可能であれば特に限定しないが、4級アンモニウム塩型貴金属錯体化合物(特開2001-192712号公報)、高分子顔料分散剤で保護された貴金属コロイド(特開平11-76800号公報、特開平11-80647号公報)、分散剤としてクエン酸ナトリウムを用いた貴金属コロイド(特開平10-66861号公報)、ペプチドの酸化物やグルコサミン化合物の酸化物で保護された貴金属コロイド(国際公開WO2005/023468号パンフレット)、アミノ酸のようなアミノ基とカルボキシル基を持つ化合物で保護された貴金属コロイド(特開2002-245854号公報)を例示できる。
本発明において引圧手段を用いるときは、例えば、反応室にガスは通すが、液体は通さない膜または物質をとおしてポンプで引くことにより圧力差を生じさせることができる。
この場合、混合液に光を照射する際、反応室に照射するため、可視部分光光度計を用いることが好ましい。そのため、反応室の上下の面の少なくとも一部は、透明であることが好ましい。この場合、上から光を照射して透過光または反射光由来の吸光度変化を読み取る可視部分光光度計を用いて、反応後の吸光度変化を測定し、その変化の増減に基づいて分析対象物質を定量することができる。
以下、分析対象物質として抗原を測定するため、抗体感作貴金属コロイドを用いた場合を例として説明する(抗体測定の場合は、抗原と抗体とを逆にすればよい)。貴金属コロイドが金コロイドの場合、試薬の抗体感作金コロイド溶液は、通常、極大吸収波長が500nm以上である。抗体感作金コロイド溶液は、極大吸収波長付近では、その抗原(分析対象物質)と反応すると、吸光度の大きな変化がおこる。一方、390~420nmでも、抗体感作金コロイド溶液は、抗原と反応すると吸光度の変化が起こる。また、貴金属コロイドがパラジウムコロイドの場合、抗体感作パラジウムコロイド溶液の極大吸収波長は通常250nm以下であり、その抗原と反応した際にはこの極大吸収波長付近で吸光度の大きな変化がおきるが、390~420nmでも、抗体感作パラジウムコロイド溶液と抗原とが反応すると吸光度の変化がおこる。本発明においては、抗原抗体反応等の液状試料と試薬との反応による吸光度の変化の度合いから抗原の濃度を定量することができる。
分析対象物質とそれに特異的に結合するパートナーとして、他の組み合わせを用いる場合にも、上記したと同様にして、貴金属コロイド凝集測定法により測定することができる。
反応室では、液状試料により、該試薬を溶解させて反応させるときには、例えば、20~40℃、好ましくは37℃付近で反応させることにより実施できる。
本発明にかかる検査器具の好ましい一実施形態として検査器具を図面に基づいて説明する。図1に検査器具の縦断面図、図2に検査器具の上面図、図3に検査器具の分解斜視図をそれぞれ示す。
検査器具は、図1から3に示すように、第1プレート1、印刷面1(図中符号2)、多孔性膜で形成される中間プレート6、印刷面2(図中符号3)および第2プレート4が、上下方向に積層され一体化された構造を有する。上層側の第1プレート1には、円形の試料供給部7が形成されている。なお、印刷面は黒く塗られた層となっているが、ドライ試薬を塗るための部分には印刷面がないためくぼみを形成し、そのくぼみにドライ試薬を塗布できるよう設定されている。印刷面1(印刷面2)は、第1プレート1(第2プレート4)または中間プレート6の一面にコーティングやスクリーン印刷等により形成されてもよく、これらのプレートとは独立したフィルムとして形成された後にこれらのプレート間に積層されてもよい。試料供給部7の上部周囲には、有底円筒形状の栓体8が着脱可能に設けられている。第1プレート1および第2プレート4には、加工容易な樹脂材料が使用され、例えば、スチレン・アクリロニトリル樹脂(ABS樹脂)などが用いられる。中間プレート6には、非通液状性で通気性の多孔質材、例えば、四フッ化エチレン樹脂(PTFE樹脂)などが用いられる。
第1プレート1と第2プレート4との間に、中間プレート6が設けられ、印刷面1(2)および印刷面2(3)を介して接着している。中間プレート6には、液状試薬の流路10が設けられ、流路10に通じて反応室11が設けられている。試料供給部7と流路10の間には、通気性があり且つ通液状性の多孔性の膜9が設けられている。
反応室11の第1の平面および第2の平面いずれか、あるいは両方に試薬が所定量塗布され乾燥付着されて、ドライ試薬1(図中符号5)および/またはドライ試薬2(図中符号12)を形成している。
反応室11での液状試料と試薬との反応後の混合液の測定は、透過光または反射光を用いて測定できる。透過光または反射光を用いる光学測定は、第1プレート1および第2プレート4の全体を光透過性のある樹脂で形成し、反応室11で試薬と液状試料との反応後に混合液に、例えば、第2プレート4の下方から第1プレート1に向かってたとえば、波長405nmの透過光を照射し、反応室11での透過光の吸収により測定すればよい。
実施例1
本発明による金コロイドを用いたヒトCRPの測定方法
1.方法
1)抗ヒトCRP抗体感作金コロイドの調製
金コロイドへの抗ヒトCRP抗体の感作は以下のように行った。
平均粒径50nmの金コロイド溶液(ナカライ社販売、保護金コロイド溶液)10mLに、抗ヒトCRP抗体をTris緩衝液で0.2mg/mLとなるように調整した溶液10mLを加え室温にて15分間静置した後、BSAコート溶液を10mL加えた。その後、15,000rpmで10分間遠心分離を行い、上清を廃棄し沈殿物を回収した。この沈殿物にBSAコート溶液を20mL加え沈殿物を懸濁し、30秒間超音波処理を行い完全に分散させた。次いで遠心分離を行い得られた沈殿物に懸濁液を1mL加えて懸濁し、抗ヒトCRP抗体感作金コロイドを得た。
2)ドライ試薬の調製
上記1)にて得られた抗ヒトCRP抗体感作金コロイドにソルビトールを終濃度2%、界面活性剤を終濃度0.1%となるように添加した。
3)検査器具の作製およびその操作
上記の通り調製した試薬は、2枚のPETシート上に、0.375μL、0.5μLとなるように各々塗布し自然放置にて乾燥した。乾燥後、塗布されたシートは、検体流路を含むシートをはさみ貼り合わせて、図1から3に示す構成の検査器具を作製した。試料は反応セル体積2.5容中に1容となるように供給部に導入し、押圧にて流路を経由して反応室に導入し、試薬を溶解させた。測定は試料導入後、10分間、37℃で反応させ、試薬が塗布された部分に対して波長405nmで測光し、反応後の吸光度を求めた。
金コロイド調製用試薬:
BSAコート溶液
Tris 10mM pH9.2
BSA (ウシ血清アルブミン) 1.0%
PEG(平均分子量 20,000) 0.1%
Tris緩衝液
Tris 10mM pH9.2
懸濁液
Tris 100mM pH9.2
試料:
インフォームドコンセントの得られたヒト血清(n=30)を用いた。
既存法との相関性はインフォームドコンセントの得られたヒト血清(n=30)を用い、既存法(ラテックス法)との相関性を確認した。
相関性の確認には既存法として、N-アッセイ LA CRP D-type(ニットーボーメディカル社製)を用い、日立7180型自動分析装置にて測定を行った。また、ドライ試薬の検量線は、CRP濃度既知の管理血清を用い作成した。
既存法をX、本発明法をYとして相関性を確認した。図4に示したように、Y=0.9849X+0.007、相関係数0.9925と良好な結果が得られた。このことから本発明の測定方法は金コロイドを用いてヒトCRPを正確に測定できているといえる。
本発明による金コロイドを用いたヒトシスタチンCの測定方法
1.方法
1)抗ヒトシスタチンC抗体感作金コロイドの調製
金コロイドへの抗ヒトシスタチンC抗体の感作は以下のように行った。平均粒径50nmの金コロイド溶液(ワインレッドケミカル社製)9mLに、抗ヒトシスタチンC抗体をTris緩衝液で150μg/mLとなるように調整した溶液3mLを加え室温にて15分間静置した後、BSAコート溶液を9mL加えた。その後、15,000rpmで10分間遠心分離を行い、上清を廃棄し沈殿物を回収した。この沈殿物にBSAコート溶液を9mL加え沈殿物を懸濁し、30秒間超音波処理を行い完全に分散させた。次いで遠心分離を行い得られた沈殿物に懸濁液を705μL加えて懸濁し、抗ヒトシスタチンC抗体感作金コロイドを得た。
2)ドライ試薬の調製
上記1)にて得られた抗ヒトシスタチンC抗体感作金コロイドにソルビトールを終濃度2%、界面活性剤を終濃度0.1%となるように添加した。
3)検査器具の作製およびその操作
上記の通り調製した試薬は、2枚のPETシート上に、0.375μL、0.5μLとなるように各々塗布し乾燥した。乾燥後、塗布されたシートは、検体流路を含むシートをはさみ貼り合わせた。試料は反応セル体積2.5容中に1容となるように導入し、試薬を溶解させた。測定は試料導入後、7分間、37℃で反応させ、試薬が塗布された部分に対して波長405nm、800nmで測光し、反応後の吸光度を求めた。
金コロイド調製用試薬:
BSAコート溶液
Tris 10mM pH9.2
BSA(ウシ血清アルブミン) 1.0%
PEG(平均分子量 20,000) 0.1%
Tris緩衝液
Tris 10mM pH9.2
懸濁液
Tris 100mM pH9.2
試料:
インフォームドコンセントの得られたヒト血清(n=28)を用いた。
既存法との相関性はインフォームドコンセントの得られたヒト血清(n=28)を用い、既存法(ラテックス法)との相関性を確認した。
相関性の確認には既存法として、N-アッセイ LA シスタチンC(ニットーボーメディカル社製)を用い、日立7180型自動分析装置にて測定を行った。また、ドライ試薬の検量線は、シスタチンC濃度既知の管理血清を用い作成した。
既存法をX、本発明法をYとして相関性を確認した。図5に示したように、Y=0.9429X+0.0635、相関係数0.9710と良好な結果が得られた。このことから本発明の測定方法は金コロイドを用いてヒトシスタチンCを正確に測定できているといえる。
本発明によるパラジウムコロイドを用いたヒトCRPの測定方法
1.方法
1)抗ヒトCRP抗体感作パラジウムコロイドの調製
パラジウムコロイドへの抗ヒトCRP抗体の感作は以下のように行った。
平均粒径76nmのパラジウムコロイド溶液(ワインレッドケミカル社製)8mLに、タンパク濃度0.2mg/dLとなるようにTris緩衝液で調整した抗ヒトCRP抗体溶液を8mL加え、室温で15分間静置した後、BSAコート溶液を8mL加え、15分静置した。その後、15,000rpmで20分間遠心分離を行い、上清を廃棄し沈殿物を回収した。この沈殿物にBSAコート溶液を16mL加え沈殿物を懸濁し、60秒間超音波処理を行い完全に分散させた。次いで、15,000rpmで20分間遠心分離を行い、得られた沈殿物に懸濁液を600μL加えて懸濁し、抗ヒトCRP抗体感作パラジウムコロイドを得た。
2)ドライ試薬の調製
上記1)にて得られた抗ヒトCRP抗体感作パラジウムコロイドにグルコースを終濃度2%、界面活性剤を終濃度0.6%となるように添加した。
3)検査器具の作製およびその操作
上記の通り調製した試薬は、1枚のPETシート上に、0.5μLとなるように塗布し乾燥した。乾燥後、試薬を塗布したPETシートと試薬を塗布していないもう一枚のPETシートとで、検体流路を含むシートをはさみ貼り合わせた。試料は反応セル体積 2.5容中に1容となるように導入し、試薬を溶解させた。測定は試料導入後、10分間、37℃で反応させ、試薬が塗布された部分に対して波長405nmで測光し、反応後の吸光度を求めた。
パラジウムコロイド調製用試薬:
BSAコート溶液
Tris 10mM pH9.2
BSA (ウシ血清アルブミン) 1.0%
PEG(平均分子量 20,000) 0.1%
Tris緩衝液
Tris 10mM pH9.2
懸濁液
Tris 200mM pH9.2
試料:
インフォームドコンセントの得られたヒト血漿(n=21)を用いた。
既存法との相関性はインフォームドコンセントの得られたヒト血清(n=21)を用い、既存法(ラテックス法)との相関性を確認した。
相関性の確認には既存法として、N-アッセイ LA CRP D-type(ニットーボーメディカル社製)を用い、日立7180型自動分析装置にて測定を行った。また、ドライ試薬の検量線は、CRP濃度既知の管理血漿を用い作成した。
既存法をX、本発明法をYとして相関性を確認した。図6に示したように、Y=1.0207X+0.252、相関係数0.9817と良好な結果が得られた。このことから本発明の測定方法はパラジウムコロイドを用いてヒトCRPを正確に測定できているといえる。
貴金属コロイド以外を用いたヒトCRPの測定
貴金属コロイドの代わりにラテックスを用いた抗ヒトCRP抗体感作ラテックス(ポリスチレン重合体)試薬を調製し、実施例1と同様の実験を行った。
ラテックス試薬では測光時の濁度によって生じた吸光度はラテックスの散乱光によって阻害され、濃度依存的に吸光度を得ることが出来なかった。加えて、ラテックス試薬は分散、拡散性に乏しく、検体供給後に乾燥状態の粒子を完全に分散、拡散させることは不可能だった。
分散、拡散性の問題は散乱光を生じにくい着色ラテックス粒子を用いても同様であり、ドライ試薬として適応させることはできなかった。
また、TIA法を用いたドライ試薬の検討では、得られる吸光度変化が極端に小さく、CRPのような低濃度のタンパク質を定量することはできなかった。
2 印刷面1
3 印刷面2
4 第2プレート
5 ドライ試薬1
6 中間プレート
7 供給部
8 栓体
9 膜
10 流路
11 反応室
12 ドライ試薬2
Claims (14)
- 液状試料中の分析対象物質を貴金属コロイド凝集測定法により測定するための検査器具であって;少なくとも液状試料を試薬と反応させる反応室を有し、反応室を構成する面の少なくとも一部に試薬が乾燥付着されており、かつ、試薬が、分析対象物質を貴金属コロイド凝集測定法で測定可能な試薬であり;さらに、液状試料を供給するための供給部;およびその供給部に供給された液状試料を反応室まで移送するための流路を備え;供給部に供給された液状試料を、流路を経由して反応室内に移送させて乾燥付着された試薬を液状試料に接触させて液状試料中に分散させるための供給部と反応室に圧力差を発生させうる、検査器具。
- 分析対象物質を貴金属コロイド凝集測定法で測定可能な試薬が、分析対象物質に特異的に結合するパートナー感作貴金属コロイドを含む試薬、または該パートナーと該分析対象物質と同じ物質感作貴金属コロイドを含む試薬である、請求項1に記載の検査器具。
- 反応室は、第1の平面、これに対向する第2の平面、および第1の平面および第2の平面それぞれに接し第1の平面と第2の平面との間に空間を形成する第3の面で形成されており、分析対象物質に特異的に結合するパートナー感作貴金属コロイドを含む試薬が、第1の平面またはこれに対向する第2の平面に乾燥付着され、あるいは、該パートナーと該分析対象物質と同じ物質感作貴金属コロイドを含む試薬において、該パートナーが第1の平面またはこれに対向する第2の平面のいずれかに乾燥付着され、その他の平面に該分析対象物質と同じ物質感作貴金属コロイドが乾燥付着された、請求項1または2に記載の検査器具。
- 貴金属コロイドが金コロイドまたはパラジウムコロイドである、請求項1から3のいずれかに記載の検査器具。
- 流路および反応室は、通気性があり且つ非通液状性の多孔性膜を介して検査器具外部と接続されている、請求項1から4のいずれかに記載の検査器具。
- 加圧により圧力差を発生させる、請求項1から5のいずれかに記載の検査器具。
- 供給部に供給された液状試料を、加圧部によって加圧して反応室内に移送可能な、請求項1から6のいずれかに記載の検査器具。
- 液状試料が生体試料であり、分析対象物質が生体成分である、請求項1から7のいずれかに記載の検査器具。
- 供給部と流路の間に、液状試料から固体を分離するための膜を有する、請求項1から8のいずれかに記載の検査器具。
- 分析対象物質を含むと疑われる液状試料を、請求項1から9のいずれかに記載の検査器具の供給部に供給し、次いで、供給部と反応室に圧力差を発生させて流路を経由して液状試料を反応室に移送させ、反応室中の試薬に液状試料を接触させて試薬を液状試料中に分散させ、液状試料中の分析対象物質を試薬と反応させ、得られる混合液に光を照射して透過光または反射光由来の吸光度変化に基づいて液状試料中の分析対象物質を測定する、液状試料中の分析対象物質の測定方法。
- 混合液に光を照射する際、反応室に照射する、請求項10に記載の測定方法。
- 照射する光の波長が340~800nmの範囲内である、請求項10または11に記載の測定方法。
- 照射する光の波長が390~420nmの範囲内である、請求項12に記載の測定方法。
- 請求項1から9のいずれかに記載の検査器具に加えて、反応室に光を照射し透過光または反射光を読み取るための可視部分光光度計を組み合わせた、液状試料中の分析対象物質を測定するための装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/639,582 US10670586B2 (en) | 2010-04-14 | 2011-04-04 | Test instrument for measuring analyte in sample by an aggregation assay using a metal colloid and using a reagent attached in a dry state in a reaction chamber, and method for measuring analyte using same |
CN201180024890.4A CN102906567B (zh) | 2010-04-14 | 2011-04-04 | 用于测定样品中的分析对象物质的检查器具及使用其的分析对象物质的测定方法 |
KR1020127026521A KR101787791B1 (ko) | 2010-04-14 | 2011-04-04 | 시료 중의 분석 대상 물질을 측정하기 위한 검사 기구 및 그것을 사용한 분석 대상 물질의 측정 방법 |
EP11768741.8A EP2560005B1 (en) | 2010-04-14 | 2011-04-04 | Test instrument for measuring analyte in sample, and method for measuring analyte using same |
JP2012510620A JP5831448B2 (ja) | 2010-04-14 | 2011-04-04 | 試料中の分析対象物質を測定するための検査器具及びそれを用いた分析対象物質の測定方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010093142 | 2010-04-14 | ||
JP2010-093142 | 2010-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011129220A1 true WO2011129220A1 (ja) | 2011-10-20 |
Family
ID=44798597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/058537 WO2011129220A1 (ja) | 2010-04-14 | 2011-04-04 | 試料中の分析対象物質を測定するための検査器具及びそれを用いた分析対象物質の測定方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10670586B2 (ja) |
EP (1) | EP2560005B1 (ja) |
JP (1) | JP5831448B2 (ja) |
KR (1) | KR101787791B1 (ja) |
CN (1) | CN102906567B (ja) |
WO (1) | WO2011129220A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014115246A (ja) * | 2012-12-12 | 2014-06-26 | Ttm:Kk | 体液成分の検査器具 |
WO2014192937A1 (ja) * | 2013-05-30 | 2014-12-04 | 公立大学法人大阪府立大学 | 被検出物質の検出装置および方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6576843B2 (ja) * | 2016-01-22 | 2019-09-18 | 株式会社日立ハイテクノロジーズ | 自動分析装置及びその散乱光測定光学系評価用標準液 |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04299262A (ja) | 1991-03-28 | 1992-10-22 | Rohto Pharmaceut Co Ltd | イムノクロマトグラフ法による物質検出法 |
JPH0734370Y2 (ja) * | 1989-07-15 | 1995-08-02 | 三浦工業株式会社 | ボイラ缶体内の腐食進度検出装置 |
JPH09196920A (ja) | 1995-11-15 | 1997-07-31 | Nihon Medi Physics Co Ltd | 体液成分分析器具および分析方法 |
JPH1066861A (ja) | 1996-08-28 | 1998-03-10 | Mitsui Mining & Smelting Co Ltd | 銀コロイド液、その製造方法、透明導電膜用コーティング材及び透明導電膜 |
JPH1176800A (ja) | 1997-07-17 | 1999-03-23 | Nippon Paint Co Ltd | 貴金属又は銅の固体ゾル及び製造方法並びに塗料組成物及び樹脂成型物 |
JPH1180647A (ja) | 1997-07-17 | 1999-03-26 | Nippon Paint Co Ltd | 貴金属又は銅のコロイド溶液及びその製造方法並びに塗料組成物及び樹脂成型物 |
JP2001192712A (ja) | 1999-12-29 | 2001-07-17 | Daiken Kagaku Kogyo Kk | 金属超微粒子及びその製造方法 |
JP2002245854A (ja) | 2001-02-20 | 2002-08-30 | Bando Chem Ind Ltd | 金属コロイド液及びその製造方法 |
JP2003254896A (ja) * | 2002-02-28 | 2003-09-10 | Kokusai Gijutsu Kaihatsu Co Ltd | 試料カートリッジ、試料分析装置及び方法 |
WO2005023468A1 (ja) | 2003-08-28 | 2005-03-17 | Tama-Tlo, Ltd. | 貴金属コロイド、貴金属微粒子、組成物および貴金属微粒子の製造方法 |
JP2007114162A (ja) | 2005-10-24 | 2007-05-10 | Matsushita Electric Ind Co Ltd | アッセイ方法、それを実施するためのセンサデバイス、およびセンサデバイス用測定装置 |
JP2007139658A (ja) * | 2005-11-21 | 2007-06-07 | Sharp Corp | アレルゲン検出方法及びアレルゲン検出装置 |
JP2009270878A (ja) | 2008-05-02 | 2009-11-19 | Ttm:Kk | 体液成分の分析器具 |
JP2010019794A (ja) * | 2008-07-14 | 2010-01-28 | Alfresa Pharma Corp | 反応性物質が結合した微小粒子の安定化方法および該微小粒子含有試薬 |
JP2010032505A (ja) * | 2008-06-30 | 2010-02-12 | Arkray Inc | 目的物質の検出方法、それに用いる検出試薬およびその用途 |
JP2010510525A (ja) * | 2006-11-22 | 2010-04-02 | スリーエム イノベイティブ プロパティズ カンパニー | 流体の抗体を含有する装置及び方法 |
Family Cites Families (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7807532A (nl) * | 1978-07-13 | 1980-01-15 | Akzo Nv | Metaal-immunotest. |
JPS59173760A (ja) * | 1983-03-24 | 1984-10-01 | Teikoku Hormone Mfg Co Ltd | 免疫化学的測定方法及びその試薬 |
GB8331514D0 (en) * | 1983-11-25 | 1984-01-04 | Janssen Pharmaceutica Nv | Visualization method |
US4756884A (en) * | 1985-08-05 | 1988-07-12 | Biotrack, Inc. | Capillary flow device |
US6143576A (en) * | 1992-05-21 | 2000-11-07 | Biosite Diagnostics, Inc. | Non-porous diagnostic devices for the controlled movement of reagents |
JPH08507148A (ja) * | 1993-02-17 | 1996-07-30 | カーディオヴァスキュラー ダイアグノスティクス,インク. | 固相化学カスケードイムノアッセイおよびアフィニティアッセイ |
JPH0734370A (ja) | 1993-07-15 | 1995-02-03 | Brother Ind Ltd | 刺繍データ作成表示装置 |
JP2597576Y2 (ja) * | 1993-12-03 | 1999-07-05 | 積水化学工業株式会社 | 便潜血検査装置 |
US6582921B2 (en) * | 1996-07-29 | 2003-06-24 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses thereof |
US6974669B2 (en) * | 2000-03-28 | 2005-12-13 | Nanosphere, Inc. | Bio-barcodes based on oligonucleotide-modified nanoparticles |
AU7928600A (en) | 1999-10-21 | 2001-04-30 | Oy Medix Biochemica Ab | A test strip provided device with a lid-provided pretreatment portion |
US6569674B1 (en) * | 1999-12-15 | 2003-05-27 | Amersham Biosciences Ab | Method and apparatus for performing biological reactions on a substrate surface |
US7201833B2 (en) * | 2001-06-04 | 2007-04-10 | Epocal Inc. | Integrated solid-phase hydrophilic matrix circuits and micro-arrays |
CA2468674A1 (en) * | 2001-12-05 | 2003-06-12 | University Of Washington | Microfluidic device and surface decoration process for solid phase affinity binding assays |
CN1217192C (zh) | 2002-11-21 | 2005-08-31 | 北京博奥生物芯片有限责任公司 | 光电化学标记物和用其进行光电化学分析的方法、仪器与试剂盒 |
ATE487941T1 (de) * | 2003-03-10 | 2010-11-15 | Sekisui Medical Co Ltd | Verfahren zur untersuchung von proben und probenbehälter zur verwendung bei dem untersuchungsverfahren |
JP2004325192A (ja) | 2003-04-23 | 2004-11-18 | Azwell Inc | 金コロイド凝集法によるハプテンの測定方法および測定キット |
US7435381B2 (en) * | 2003-05-29 | 2008-10-14 | Siemens Healthcare Diagnostics Inc. | Packaging of microfluidic devices |
JP2005283250A (ja) | 2004-03-29 | 2005-10-13 | Alfresa Pharma Corp | 金コロイド凝集反応の測定方法 |
US8232045B2 (en) * | 2005-03-29 | 2012-07-31 | Inverness Medical Switzerland Gmbh | Colloidal metal conjugates |
JP2006292410A (ja) * | 2005-04-06 | 2006-10-26 | Matsushita Electric Ind Co Ltd | 分析装置およびそれに使用する分析デバイス |
JP2007248101A (ja) | 2006-03-14 | 2007-09-27 | Ttm:Kk | 液状流体の検査器具および検査方法 |
DE102006042774A1 (de) | 2006-09-12 | 2008-03-27 | Qimonda Ag | Verfahren zur Herstellung einer elektrischen Ankontaktierung |
EP2129803A4 (en) | 2007-02-27 | 2010-11-03 | Univ Northwestern | FIXING MOLECULES TO NANOPARTICLES |
JP2010197046A (ja) * | 2007-05-28 | 2010-09-09 | Tanaka Holdings Kk | バイオセンサー |
JPWO2009037785A1 (ja) | 2007-09-21 | 2011-01-06 | 株式会社ティー・ワイ・エー | 体液成分の分析器具の検査方法および体液成分の分析器具 |
WO2009054538A1 (ja) * | 2007-10-22 | 2009-04-30 | Alfresa Pharma Corporation | 免疫学的微小粒子の凝集反応を用いる検体のアクロレイン付加体の測定方法および測定用キット |
EP2230516B1 (en) * | 2007-12-07 | 2013-04-10 | Alfresa Pharma Corporation | Method of immunoassaying specimen using aggregation reaction of microparticles and assay kit |
JP4980945B2 (ja) * | 2008-02-12 | 2012-07-18 | 富士フイルム株式会社 | 金属粒子及びそれを用いた検査方法 |
US20090286692A1 (en) | 2008-04-15 | 2009-11-19 | Wainwright Norman R | Cartridge and Method for Sample Analysis |
TWI369574B (en) | 2008-07-09 | 2012-08-01 | Coretronic Corp | Illuminating device of projecting apparatus |
JP5238412B2 (ja) | 2008-08-28 | 2013-07-17 | 株式会社東芝 | X線キャリブレーション用ファントム及びx線ct装置 |
JP5219221B2 (ja) | 2009-07-08 | 2013-06-26 | 株式会社ティー・ティー・エム | 試薬チップ押圧機構を備えた体液分析装置 |
-
2011
- 2011-04-04 US US13/639,582 patent/US10670586B2/en not_active Expired - Fee Related
- 2011-04-04 CN CN201180024890.4A patent/CN102906567B/zh active Active
- 2011-04-04 KR KR1020127026521A patent/KR101787791B1/ko active IP Right Grant
- 2011-04-04 JP JP2012510620A patent/JP5831448B2/ja active Active
- 2011-04-04 EP EP11768741.8A patent/EP2560005B1/en active Active
- 2011-04-04 WO PCT/JP2011/058537 patent/WO2011129220A1/ja active Application Filing
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0734370Y2 (ja) * | 1989-07-15 | 1995-08-02 | 三浦工業株式会社 | ボイラ缶体内の腐食進度検出装置 |
JPH04299262A (ja) | 1991-03-28 | 1992-10-22 | Rohto Pharmaceut Co Ltd | イムノクロマトグラフ法による物質検出法 |
JPH09196920A (ja) | 1995-11-15 | 1997-07-31 | Nihon Medi Physics Co Ltd | 体液成分分析器具および分析方法 |
JPH1066861A (ja) | 1996-08-28 | 1998-03-10 | Mitsui Mining & Smelting Co Ltd | 銀コロイド液、その製造方法、透明導電膜用コーティング材及び透明導電膜 |
JPH1176800A (ja) | 1997-07-17 | 1999-03-23 | Nippon Paint Co Ltd | 貴金属又は銅の固体ゾル及び製造方法並びに塗料組成物及び樹脂成型物 |
JPH1180647A (ja) | 1997-07-17 | 1999-03-26 | Nippon Paint Co Ltd | 貴金属又は銅のコロイド溶液及びその製造方法並びに塗料組成物及び樹脂成型物 |
JP2001192712A (ja) | 1999-12-29 | 2001-07-17 | Daiken Kagaku Kogyo Kk | 金属超微粒子及びその製造方法 |
JP2002245854A (ja) | 2001-02-20 | 2002-08-30 | Bando Chem Ind Ltd | 金属コロイド液及びその製造方法 |
JP2003254896A (ja) * | 2002-02-28 | 2003-09-10 | Kokusai Gijutsu Kaihatsu Co Ltd | 試料カートリッジ、試料分析装置及び方法 |
WO2005023468A1 (ja) | 2003-08-28 | 2005-03-17 | Tama-Tlo, Ltd. | 貴金属コロイド、貴金属微粒子、組成物および貴金属微粒子の製造方法 |
JP2007114162A (ja) | 2005-10-24 | 2007-05-10 | Matsushita Electric Ind Co Ltd | アッセイ方法、それを実施するためのセンサデバイス、およびセンサデバイス用測定装置 |
JP2007139658A (ja) * | 2005-11-21 | 2007-06-07 | Sharp Corp | アレルゲン検出方法及びアレルゲン検出装置 |
JP2010510525A (ja) * | 2006-11-22 | 2010-04-02 | スリーエム イノベイティブ プロパティズ カンパニー | 流体の抗体を含有する装置及び方法 |
JP2009270878A (ja) | 2008-05-02 | 2009-11-19 | Ttm:Kk | 体液成分の分析器具 |
JP2010032505A (ja) * | 2008-06-30 | 2010-02-12 | Arkray Inc | 目的物質の検出方法、それに用いる検出試薬およびその用途 |
JP2010019794A (ja) * | 2008-07-14 | 2010-01-28 | Alfresa Pharma Corp | 反応性物質が結合した微小粒子の安定化方法および該微小粒子含有試薬 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2560005A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014115246A (ja) * | 2012-12-12 | 2014-06-26 | Ttm:Kk | 体液成分の検査器具 |
WO2014192937A1 (ja) * | 2013-05-30 | 2014-12-04 | 公立大学法人大阪府立大学 | 被検出物質の検出装置および方法 |
US9903861B2 (en) | 2013-05-30 | 2018-02-27 | Osaka Prefecture University Public Corporation | Device and method for detecting an analyte |
Also Published As
Publication number | Publication date |
---|---|
JP5831448B2 (ja) | 2015-12-09 |
CN102906567B (zh) | 2015-02-04 |
US20130084651A1 (en) | 2013-04-04 |
KR20130066576A (ko) | 2013-06-20 |
US10670586B2 (en) | 2020-06-02 |
JPWO2011129220A1 (ja) | 2013-07-18 |
EP2560005A4 (en) | 2014-04-09 |
CN102906567A (zh) | 2013-01-30 |
EP2560005B1 (en) | 2016-12-07 |
EP2560005A1 (en) | 2013-02-20 |
KR101787791B1 (ko) | 2017-10-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Gaikwad et al. | Advances in point-of-care diagnostic devices in cancers | |
JP4360652B2 (ja) | イムノクロマト法試薬用標識シリカナノ粒子、イムノクロマト法試薬、それを用いたイムノクロマト法用テストストリップ、及びイムノクロマト法用蛍光検出システム | |
AU2009233755B2 (en) | Sensitive immunoassays using coated nanoparticles | |
JP4514824B2 (ja) | イムノクロマト法試薬用標識シリカナノ粒子の製造方法、イムノクロマト法用コンジュゲートパッドの製造方法、及びそれを用いたイムノクロマト法用テストストリップの使用方法 | |
JP4216838B2 (ja) | 非連続式免疫分析装置及びこれを利用した免疫分析方法 | |
EP2284538B1 (en) | Biosensor | |
US20110229913A1 (en) | Method for Amplification of Signal in Immunochromatographic Assay and Immunochromatographic Kit Using the Method | |
JP5351054B2 (ja) | 不溶性担体粒子の製造方法、不溶性担体粒子、測定試薬、検体分析用具および免疫比濁法 | |
JP5006459B1 (ja) | 標識用複合粒子 | |
JP5831448B2 (ja) | 試料中の分析対象物質を測定するための検査器具及びそれを用いた分析対象物質の測定方法 | |
JP4980944B2 (ja) | 免疫学的測定方法 | |
CN205538994U (zh) | 一种高灵敏时间分辨荧光免疫层析检测试剂装置 | |
JP2012215494A (ja) | イムノクロマト測定法ならびにそれに用いられるキットおよびシステム | |
US20140011190A1 (en) | Method for performing a rapid test | |
JP7533226B2 (ja) | イムノクロマト試験片およびそれを用いた測定方法 | |
WO2014051141A1 (ja) | 無希釈系イムノクロマトグラフ法試薬において希釈試料を測定するための添加物 | |
WO2020166699A1 (ja) | イムノクロマト試験片およびそれを用いた測定方法 | |
KR20130090174A (ko) | 퀀칭 시스템을 이용한 바이오 센서 및 이를 이용한 측정방법 | |
KR20150111391A (ko) | 면역크로마토그래피 분석용 디바이스 | |
JPS6262291B2 (ja) | ||
Kim et al. | Development of a High-performance COVID-19 Diagnostic Kit Employing Improved Antibody-quantum dot Conjugate | |
TW202424489A (zh) | 診斷分析裝置、診斷分析套組以及用於識別分析物的存在的方法 | |
JP2010091353A (ja) | バイオセンサおよびバイオセンサ用不溶性粒状マーカー | |
JP2009222562A (ja) | 測定チップとそれを用いた測定方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180024890.4 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11768741 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012510620 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13639582 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20127026521 Country of ref document: KR Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2011768741 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011768741 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |