WO2001086301A1 - Composition polymère pour former la surface d'un biocapteur - Google Patents
Composition polymère pour former la surface d'un biocapteur Download PDFInfo
- Publication number
- WO2001086301A1 WO2001086301A1 PCT/JP2001/003886 JP0103886W WO0186301A1 WO 2001086301 A1 WO2001086301 A1 WO 2001086301A1 JP 0103886 W JP0103886 W JP 0103886W WO 0186301 A1 WO0186301 A1 WO 0186301A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- integer
- polymer
- hydrogen atom
- formula
- Prior art date
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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
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/544—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being organic
- G01N33/545—Synthetic resin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/688—Polyesters containing atoms other than carbon, hydrogen and oxygen containing sulfur
-
- 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
- G01N33/54353—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals with ligand attached to the carrier via a chemical coupling agent
-
- 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
- G01N33/544—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals the carrier being organic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/817—Enzyme or microbe electrode
Definitions
- the present invention relates to a polymer composition for forming a surface of a biosensor to which surface plasmon resonance (SPR) is applied, a biosensor chip surface on which such a polymer is absorbed (or adsorbed), and a composition using the composition. It relates to a method for manufacturing a biosensor chip.
- SPR surface plasmon resonance
- SPR Surface plasmon resonance
- BI ACORE available from Amersham Pharmacia Biotech Co., Ltd.
- This BI ACORE is a chip in which a carboxylated dextran matrix is immobilized on a translucent gold thin film.
- dextran matrices exhibit some resistance to non-specific adsorption of proteins, but have a considerable thickness (approximately 100 nm) so that, for example, analytes can partition into the matrix. May adversely affect thermodynamic and kinetic parameters.
- the polymer represented by is automatically deposited on a thin layer of titanium (11-5 nm) deposited on a glass support (15 nm) and on a gold layer (12 nm) on a glass substrate (se 1 f-asse mb led mono). l ay er).
- the authors suggest that monolayers formed from the above polymers with 2 to 7 ethylene glycol units are resistant to protein adsorption.
- the results indicate that, for example, when polyethylene glycol (PEG) is grafted onto glass modified with trichloromethyl vinylsilane, the shorter the PEG chain, the lower the resistance to protein adsorption. This suggests that it does not agree with the theoretical prediction (SI J eon, et al., J.
- An object of the present invention is to significantly reduce the nonspecific adsorption of any protein compared to the polymers of E. Ostuni et al., And to eliminate the above-mentioned disadvantages when using BIACORE's dextran matrix.
- An object of the present invention is to provide a polymer composition for SPR that can be significantly improved.
- the present invention provides a method for forming a surface of a biosensor using surface plasmon resonance (SPR) comprising the specific polymer (ie, a polymer represented by the following general formula (I)) as an active ingredient.
- SPR surface plasmon resonance
- L 2 and L 3 are each independently a valence bond or a linker. Where m is 0, 1 ⁇ and L 2 can be joined together to form a valence bond or one linker,
- R 1 and R 2 are independently a hydrogen atom, an alkyl group of 1 to 5 carbon atoms, and p is an integer from 2 to 5,
- X represents a hydrogen atom, a functional group or a ligand
- n is an integer from 0 to: L 0, 0 0 0, and
- n is an integer from 10 to 20;
- the present invention provides a solution or suspension of a polymer containing a polymer represented by the above general formula (I), which has a surface selected from the group consisting of gold, silver, platinum and aluminum.
- the sensor chip is processed, and the polymer is chemisorbed or absorbed on the surface via the mercapto group in the polymer, and then, if necessary, the ligand is covalently bonded through the functional group X in the polymer.
- the present invention provides a method for producing a biosensor chip applying SPR, which is characterized by the following.
- the present invention also provides use of the polymer represented by the general formula (I) for preparing a surface of a biosensor chip to which SPR is applied.
- polymers themselves represented by the general formula (I) are almost known, and even if they are novel polymers, they can be produced according to similar known polymers.
- Preferred of these polymers are those in which m in the general formula (I) is 0 to 10 or 100. Is 0, is a valence bond,
- Li and L 2 together can be the linker defined above for, where q is an integer from 2 to 6 Or if m is other than 0, L 2 is one 0— or — 0— CH 2 CH 2 — 0—
- L 3 is a valence bond or or — (CH 2 ) r —, where r is an integer from 1 to 6, and
- X is a hydrogen atom, an aldehyde group (one CHO), a hydroxyl group, an amino group,
- R 3 and R 4 independently represent a C! O alkyl group, or R 3 and R 4 together form an ethylene group which may be substituted with d-6 alkyl NR 5 R 6 (where R 5 and R 6 are independently a hydrogen atom or a d-6 alkyl group, provided that either R 5 or R 6 is hydrogen
- R 5 and R 6 are independently a hydrogen atom or a d-6 alkyl group, provided that either R 5 or R 6 is hydrogen
- a functional group selected from the group consisting of an acryloyl group, a methacryloyl group, a vinylbenzyl group, an aryl group and a P-toluenesulfonyl group, or a group consisting of a sugar residue, biotin, an antigen or an antibody, and a nucleic acid. Which represent the ligand of choice.
- Preferred examples of the polymer used in the present invention include a polymer represented by the following general formula (I-a), for example, a polymer in which m in formula (I) is 0.
- R 3 and R 4 independently represent a d-u alkyl group, or a R 3
- n is an integer from 10 to 20,000
- r is an integer from 1 to 6.
- polymers include, for example, polymers themselves described in W096 / 32434, W096 / 33233, WO97 / 06202, JP-A-11-322916, JP-A-11-322917, or precursors thereof. Can be produced, if necessary, by modifying it by a method known per se. ,
- a 1 k is (( 6 alkyl group, M + is a potassium ion, A is a leaving group such as halogen, and R ′, R ⁇ X, n, m and L 3 is as defined above, B is
- Xa is X- L 3
- other abbreviations have the same meaning as above. .
- an alkyl group means an alkyl group which may be branched, and d- 6 or d1 () preceding the term "alkyl group” represents a carbon atom of the alkyl group. It means that the number is 1-6 or 1-10.
- examples of such alkyl groups include methyl, ethyl, n-propyl, i-propyl, n-butyl, sec-butyl, tert-butyl, n-methyl, n- Hexyl, n-octyl, n-decyl and the like.
- the ligand according to the present invention can be one of a binding pair capable of forming a biological conjugate (complex).
- a biological conjugate for example: Examples include biotin, a sugar in a sugar-lectin complex, an antigen or antibody in an antigen-antibody complex, and any nucleic acid in a nucleic acid-nucleic acid hybrid.
- These ligands are prepared by introducing a functional group (for example, an aldehyde group) present at one end of the polymer of the general formula (I) into one end of the polymer by utilizing a reaction with an amino group in the ligand. Can be.
- a ligand may be introduced after a polymer having a functional group at one end is fixed to a metal surface as described later.
- n forming the polyethylene segment is 10 or more, preferably 10 to 250, more preferably 50 to 500.
- the polymer of the general formula (I) having a mercapto group at one end can be used in various solvents, for example, tetrahydrofuran, lower alkanol (eg, ethanol), dimethylformamide, toluene, xylene, etc.
- the polymer of the general formula (I), which can be dissolved or dispersed stably, is dissolved or dispersed in such a solvent, and is one of the polymer compositions for forming the surface of a biosensor to which SPR is applied according to the present invention. It is an aspect.
- Such a polymer composition can include one or more polymers, and if necessary, other additives, such as a sulfuric acid rim that can fix the polymer to the surface at a high density. May be included.
- the polymer composition thus prepared can be in any form, typically a thin film of titanium on a glass or silicon wafer, if necessary, to improve the adhesion of gold, silver, aluminum, etc. After vapor deposition, it can be chemisorbed (or adsorbed) on gold, silver or platinum by contacting the chip with a layer of gold, silver, platinum, palladium or aluminum deposited thereon. Chemical absorption (or adsorption), without being bound by theory, is understood to occur through the formation of metal-thiolates (hereinafter also referred to as complexes) by the reaction of the polymer's mercapto groups with the metal surface. ing.
- complexes metal-thiolates
- This absorption is performed, for example, by immersing a support carrying a translucent gold thin film in the polymer solution or by flowing the polymer solution over the surface of the support.
- the optimum temperature varies depending on the type of the polymer used, it can be generally between the melting point and the boiling point of the solvent. Considering the operational convenience, it is preferable that the temperature be around room temperature. Process at around room temperature In this case, the contact time between the metal surface and the polymer solution is usually about 30 minutes, but may be 124 hours or more.
- the polymer of the general formula (I) is absorbed (or adsorbed) on the metal surface, but the unabsorbed or unadsorbed polymer may be washed and removed if necessary.
- the concentration of the polymer in the polymer solution is not particularly limited as long as the polymer is in a state of being dissolved or uniformly dispersed, but generally, 10 200 / g / m 1 is preferable.
- the metal surface (eg, sensor chip surface) on which the polymer of the general formula (I) formed as described above is chemically absorbed (or adsorbed) via a mercapto group is covered with polyethylene glycol segments having an appropriate chain length. Therefore, it is considered that the surface charge is substantially zero, or substantially zero, without being directly affected by the metal surface.
- species eg, positively charged proteins
- N-succinimidol-3- (2-pyridylthio) propionate (SPDP) 0.4 mmo 1 (0.125 g) was dissolved in a small amount of distilled THF as a terminator, and the above-mentioned polymerization reaction solution was dropped to this solution under an equal pressure. The mixture was added dropwise under ice-cooling using a funnel. After stopping the reaction by stirring overnight, the polymer was recovered through washing with saturated saline, extraction with chloroform through form, reprecipitation from ether, and freeze-drying with benzene. The structure of the recovered polymer was confirmed by 1 H-NMR, and the amount of SPDP residue introduced at the end was confirmed by UV absorption of 2-thiopyridone released by reaction with 2-mercaptoethanol. did.
- PEG-SS-Py 2.0 x 10- 2 mmo 1 (10 Omg) was dissolve in distilled water 4m 1, and further 5 times mo 1 of dithiothreitol 0. lmmo 1 a (15.42mg) was added, 30 at room temperature For a minute.
- the polymer (hereinafter abbreviated as PEG5000) was recovered through washing with saturated saline solution, extraction of form from black mouth and reprecipitation from ether.
- the structure of the recovered polymer was confirmed by 1 H-NMR, and the terminal SH group was quantified by reaction with 2_pyridinoledisulfide (2-PDS).
- a polymer of n 10000 was obtained.
- the respective polymers are abbreviated as PEG 2000 and PEG 10000.
- the Mn value indicates the molecular weight of the PEG segment.
- the quantification results were PEG2000, PEG5000 and PEG 100, respectively.
- 00 is front (RUstart) and adsorption to adsorb and after SDS wash (RU S)
- DS RU value
- a laser beam of a specific wavelength is irradiated so that it is totally reflected, and the refractive index is measured.
- the amount 1 n gZmm 2 is asked to set coefficients
- these RU saturation values were divided by the molecular weight of the polymer, and the number of polymers adsorbed per 1 nm 2 was defined as the density of the fixed polymer.
- Example 2 Adsorption characteristics of various proteins on polymer adsorption surface
- PEG2000, PEG5000 and PEG10000 significantly reduce the non-specific adsorption of various proteins compared to CM5 with dextran adsorbed on the surface.
- Lysozyme and Avidin About 11-15 to 20 are reduced.
- a sensor chip in which non-specific adsorption of a biological component or the like to the biosensor surface is eliminated. Therefore, it can be used in the biosensor manufacturing industry and the diagnostic business using such a sensor.
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- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Urology & Nephrology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Molecular Biology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Cell Biology (AREA)
- Biotechnology (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
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- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001583193A JP3446065B2 (ja) | 2000-05-11 | 2001-05-10 | バイオセンサーの表面形成用ポリマー組成物 |
AU56679/01A AU5667901A (en) | 2000-05-11 | 2001-05-10 | Polymer composition for forming surface of biosensor |
US10/275,904 US6927033B2 (en) | 2000-05-11 | 2001-05-10 | Polymer composition for forming surface of biosensor |
EP01930017A EP1279959A4 (en) | 2000-05-11 | 2001-05-10 | POLYMER COMPOSITION FOR FORMING THE SURFACE OF A BIOSENSOR |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-138472 | 2000-05-11 | ||
JP2000138472 | 2000-05-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001086301A1 true WO2001086301A1 (fr) | 2001-11-15 |
Family
ID=18646075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/003886 WO2001086301A1 (fr) | 2000-05-11 | 2001-05-10 | Composition polymère pour former la surface d'un biocapteur |
Country Status (5)
Country | Link |
---|---|
US (1) | US6927033B2 (ja) |
EP (1) | EP1279959A4 (ja) |
JP (1) | JP3446065B2 (ja) |
AU (1) | AU5667901A (ja) |
WO (1) | WO2001086301A1 (ja) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6602669B2 (en) | 2000-07-11 | 2003-08-05 | Northwestern University | Method of detection by enhancement of silver staining |
WO2003076933A1 (fr) * | 2002-03-11 | 2003-09-18 | Toudai Tlo, Ltd. | Surface en poly(ethylene oxyde) a structure de type pinceau presentant une densite elevee |
US6645721B2 (en) | 1996-07-29 | 2003-11-11 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6673548B2 (en) | 1996-07-29 | 2004-01-06 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
WO2004022583A1 (ja) * | 2002-09-09 | 2004-03-18 | Japan Science And Technology Agency | リンカー化合物及びリガンド、並びにそれらの製造方法 |
US6750016B2 (en) | 1996-07-29 | 2004-06-15 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6767702B2 (en) | 1996-07-29 | 2004-07-27 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6773884B2 (en) | 1996-07-29 | 2004-08-10 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6812334B1 (en) | 1996-07-29 | 2004-11-02 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
WO2005010529A1 (ja) * | 2003-07-28 | 2005-02-03 | Tokyo University Of Science, Educational Foundation | 非特異吸着を抑制した基材表面 |
US6984491B2 (en) | 1996-07-29 | 2006-01-10 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US7186814B2 (en) | 2001-11-09 | 2007-03-06 | Nanosphere, Inc. | Bioconjugate-nanoparticle probes |
US7323309B2 (en) | 2000-03-28 | 2008-01-29 | Northwestern University | Bio-barcodes based on oligonucleotide-modified particles |
JPWO2005111618A1 (ja) * | 2004-05-18 | 2008-03-27 | 独立行政法人理化学研究所 | 物質固定化剤、それを用いた物質固定化方法及びそれを用いた物質固定化基体 |
CN100398554C (zh) * | 2002-09-09 | 2008-07-02 | 独立行政法人科学技术振兴机构 | 链化合物和配体、及其制备方法 |
US7964414B2 (en) | 2005-03-22 | 2011-06-21 | Fujifilm Corporation | Biosensor with suppressed non-specific adsorption |
US9239329B2 (en) | 2006-12-18 | 2016-01-19 | Japan Science And Technology Agency | Method of measuring interaction between biomaterial and sugar chain, method of evaluating biomaterial in sugar chain selectivity, method of screening biomaterial, method of patterning biomaterials, and kits for performing these methods |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1646912A (zh) * | 2002-04-03 | 2005-07-27 | 独立行政法人科学技术振兴机构 | 担载了聚乙二醇化纳米粒子的生物传感器芯片表面 |
US20040191815A1 (en) * | 2003-01-15 | 2004-09-30 | Motoki Kyo | Array having oligonucleotides on a metal substrate |
US7631798B1 (en) * | 2008-10-02 | 2009-12-15 | Ernest Long | Method for enhancing the solderability of a surface |
US8660628B2 (en) | 2009-12-21 | 2014-02-25 | Medtronic Minimed, Inc. | Analyte sensors comprising blended membrane compositions and methods for making and using them |
Citations (3)
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WO1996032434A1 (fr) * | 1995-04-14 | 1996-10-17 | Kazunori Kataoka | Oxydes de polyethylene ayant un groupe saccharide a une extremite et un groupe fonctionnel different a l'autre extremite, et procede pour produire lesdits oxydes de polyethylene |
WO1996033233A1 (fr) * | 1995-04-19 | 1996-10-24 | Kazunori Kataoka | Copolymeres en blocs heterotelecheliques et procede de production |
WO1997006202A1 (fr) * | 1995-08-10 | 1997-02-20 | Kazunori Kataoka | Polymere sequence pourvu de groupes fonctionnels aux deux extremites |
Family Cites Families (1)
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IL93020A (en) * | 1990-01-09 | 1995-06-29 | Yeda Res & Dev | Biosensors comprising a lipid bilayer doped with ion channels anchored to a recording electrode by bridging molecules |
-
2001
- 2001-05-10 WO PCT/JP2001/003886 patent/WO2001086301A1/ja active Application Filing
- 2001-05-10 US US10/275,904 patent/US6927033B2/en not_active Expired - Fee Related
- 2001-05-10 AU AU56679/01A patent/AU5667901A/en not_active Abandoned
- 2001-05-10 JP JP2001583193A patent/JP3446065B2/ja not_active Expired - Fee Related
- 2001-05-10 EP EP01930017A patent/EP1279959A4/en not_active Withdrawn
Patent Citations (3)
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WO1996032434A1 (fr) * | 1995-04-14 | 1996-10-17 | Kazunori Kataoka | Oxydes de polyethylene ayant un groupe saccharide a une extremite et un groupe fonctionnel different a l'autre extremite, et procede pour produire lesdits oxydes de polyethylene |
WO1996033233A1 (fr) * | 1995-04-19 | 1996-10-24 | Kazunori Kataoka | Copolymeres en blocs heterotelecheliques et procede de production |
WO1997006202A1 (fr) * | 1995-08-10 | 1997-02-20 | Kazunori Kataoka | Polymere sequence pourvu de groupes fonctionnels aux deux extremites |
Non-Patent Citations (2)
Title |
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PAVEY K.D. ET AL.: "SPR analysis of the total reduction of protein adsorption to surfaces coated with mixtures of long- and short-chain polyethylene oxide block copolymers", BIOMATERIALS, vol. 20, no. 9, 1999, pages 885 - 890, XP002941783 * |
Cited By (40)
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US6828432B2 (en) | 1996-07-29 | 2004-12-07 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6750016B2 (en) | 1996-07-29 | 2004-06-15 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6673548B2 (en) | 1996-07-29 | 2004-01-06 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6677122B2 (en) | 1996-07-29 | 2004-01-13 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
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US6861221B2 (en) | 1996-07-29 | 2005-03-01 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
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US6777186B2 (en) | 1996-07-29 | 2004-08-17 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6812334B1 (en) | 1996-07-29 | 2004-11-02 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6903207B2 (en) | 1996-07-29 | 2005-06-07 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6902895B2 (en) | 1996-07-29 | 2005-06-07 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6878814B2 (en) | 1996-07-29 | 2005-04-12 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US6767702B2 (en) | 1996-07-29 | 2004-07-27 | Nanosphere, Inc. | Nanoparticles having oligonucleotides attached thereto and uses therefor |
US7323309B2 (en) | 2000-03-28 | 2008-01-29 | Northwestern University | Bio-barcodes based on oligonucleotide-modified particles |
US6602669B2 (en) | 2000-07-11 | 2003-08-05 | Northwestern University | Method of detection by enhancement of silver staining |
US7186814B2 (en) | 2001-11-09 | 2007-03-06 | Nanosphere, Inc. | Bioconjugate-nanoparticle probes |
WO2003076933A1 (fr) * | 2002-03-11 | 2003-09-18 | Toudai Tlo, Ltd. | Surface en poly(ethylene oxyde) a structure de type pinceau presentant une densite elevee |
US7214500B2 (en) | 2002-03-11 | 2007-05-08 | Toudai Tlo, Ltd. | Brush-like structured surface of poly(ethylene oxide) having elevated density |
US7320867B2 (en) | 2002-09-09 | 2008-01-22 | Japan Science And Technology Agency | Linker compound, ligand, and producing method thereof |
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US9239329B2 (en) | 2006-12-18 | 2016-01-19 | Japan Science And Technology Agency | Method of measuring interaction between biomaterial and sugar chain, method of evaluating biomaterial in sugar chain selectivity, method of screening biomaterial, method of patterning biomaterials, and kits for performing these methods |
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JP3446065B2 (ja) | 2003-09-16 |
EP1279959A1 (en) | 2003-01-29 |
US20030171506A1 (en) | 2003-09-11 |
AU5667901A (en) | 2001-11-20 |
EP1279959A4 (en) | 2006-07-05 |
US6927033B2 (en) | 2005-08-09 |
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