WO2002052260A9 - Biosensor und verfahren zu seiner herstellung - Google Patents
Biosensor und verfahren zu seiner herstellungInfo
- Publication number
- WO2002052260A9 WO2002052260A9 PCT/EP2001/015225 EP0115225W WO02052260A9 WO 2002052260 A9 WO2002052260 A9 WO 2002052260A9 EP 0115225 W EP0115225 W EP 0115225W WO 02052260 A9 WO02052260 A9 WO 02052260A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- protective layer
- biosensor
- plasmon
- hydrogel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
Definitions
- the invention relates to a biosensor with a support, a plason-supporting layer arranged on the support made of a metal with free electrons or a semiconductor, an intermediate layer and an external hydrogel layer with the possibility of connecting receptors for the binding of analytes and the property of avoiding unspecific adsorption.
- Such a biosensor is e.g. known from DE 198 17 180 C2.
- the biosensor whose hydrogel layer consists of a polymer, for example dextran, amylose or celulose and whose receptors are formed, for example, by proteins (e.g. antibodies, antigens, membrane proteins), glycoproteins, nykleotids or DNA, to which an analyte (binding partner) can serve to detect certain molecules (in particular biomolecules) in a sample to be examined, for which purpose an optical plasmon resonance measurement is carried out.
- proteins e.g. antibodies, antigens, membrane proteins
- glycoproteins e.g. antibodies, antigens, membrane proteins
- nykleotids or DNA to which an analyte (binding partner) can serve to detect certain molecules (in particular biomolecules) in a sample to be examined, for which purpose an optical plasmon resonance measurement is carried out.
- a covalently bound organic compound predominantly sulfur compound
- the plasmon-bearing noble metal layer in particular gold layer
- the intermediate layer made of a polymer
- a further linker is used to bind the hydrogel (main polymer).
- the object of the invention is to create a biosensor which is comparatively simple to manufacture and which is insensitive to disturbing contamination of the plasmon-bearing layer.
- plasmon-carrying layer Contains protective layer, which is physisorbed on the plasmon-carrying layer and to which the hydrogel layer is connected.
- the physisorption provided according to the invention makes chemical binding in the manner of a linker to the plasmon-carrying layer superfluous.
- the physisorbed protective layer for example a very thin silicon oxide layer, protects the plasmon-bearing layer from contamination in an excellent manner, in particular in combination with the hydrogel layer it prevents the so-called unspecific adsorption. This result is already achieved with a thin protective layer of less than 10 nm, in particular less than 5 nm, which seals the plasmon-carrying layer, without this
- the hydrogel layer can be more easily connected to the physisorbed protective layer and known and proven coating methods can be adopted from other areas. Furthermore, when the plasmon-bearing noble metal layer is applied by vapor deposition or sputtering onto the carrier, the protective layer can also be applied in one step in a labor-saving manner.
- the invention also relates to a method for producing the biosensor according to the invention, in which a plasmon-carrying layer is applied to a carrier, which is then covered with a hydrogel layer with the interposition of an intermediate layer.
- this method is characterized in that after the plasmon-carrying layer has been applied to the intermediate layer, a protective layer is physisorbed, whereupon the hydrogel layer is attached to the intermediate layer.
- FIGS. 3 and 4 the result of optical plasmon resonance measurements (detector response curves) with a biosensor according to FIG. 1 with a physisorbed protective layer (FIG. 4) and without such a protective layer ( Figure 3) show.
- a plasmon-carrying layer 2 is arranged on a carrier 1, for example a glass prism, which can be a noble metal layer, in particular a gold layer, a silver layer or a semiconductor layer. Between the Carrier 1 and layer 2 can be provided with an adhesion promoter (not shown). As shown in FIG. 1, there is an intermediate layer 3 on layer 2.
- An ultra-thin silicon monoxide was applied to layer 2 by means of an adhesion promoter, for example nickel / chromium, titanium, chromium, by means of thermal vapor deposition, sputtering, electron beam evaporation, sol gel technology or plasma polymerization Layer (SiO layer) of less than 5 nm thickness applied. The SiO is oxidized to SiO 2 in air and forms a protective layer 4 on the plasmon-carrying layer 2.
- a hydrogel layer 6 e.g. Dextran, amylose or cellulose.
- This hydrogel layer 6 can be provided with receptors 7 in a known manner, e.g. Proteins (e.g. antibodies, antigens, membrane proteins), glycoproteins, nucleotides, DNA, to which only the analytes to be detected, mainly biomolecules, attach, provided that they are in a sample to be applied to the hydrogel layer 6.
- FIG. 2 shows a biosensor modified compared to FIG. 1, but which in the same way has a carrier 1, a plasmon-carrying layer 2 and a hydrogel layer 6 with receptors 7.
- the intermediate layer 8 has a protective layer 9, for the formation of which a polymer, for example polyacrylic acid, was applied to the surface of the layer 2 by means of plasma polymerization.
- the hydrogel layer 6 is attached to this polymer layer 9 serving as a protective layer by means of a linker 10.
Landscapes
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002237253A AU2002237253A1 (en) | 2000-12-22 | 2001-12-21 | Biosensor and method of producing the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000164146 DE10064146A1 (de) | 2000-12-22 | 2000-12-22 | Biosensor und verfahren zu seiner Herstellung |
| DE10064146.6 | 2000-12-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2002052260A2 WO2002052260A2 (de) | 2002-07-04 |
| WO2002052260A9 true WO2002052260A9 (de) | 2002-09-19 |
| WO2002052260A3 WO2002052260A3 (de) | 2002-11-14 |
Family
ID=7668367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2001/015225 Ceased WO2002052260A2 (de) | 2000-12-22 | 2001-12-21 | Biosensor und verfahren zu seiner herstellung |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2002237253A1 (de) |
| DE (1) | DE10064146A1 (de) |
| WO (1) | WO2002052260A2 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004061211A (ja) * | 2002-07-26 | 2004-02-26 | Shimadzu Corp | 蛍光検出方法及び装置 |
| JP2006322939A (ja) * | 2005-05-19 | 2006-11-30 | Agilent Technol Inc | 結合したリガンドを有するエバネッセント波センサー |
| US7889347B2 (en) | 2005-11-21 | 2011-02-15 | Plexera Llc | Surface plasmon resonance spectrometer with an actuator driven angle scanning mechanism |
| US7463358B2 (en) * | 2005-12-06 | 2008-12-09 | Lumera Corporation | Highly stable surface plasmon resonance plates, microarrays, and methods |
| US20080188010A1 (en) * | 2007-02-01 | 2008-08-07 | Fujifilm Corporation | Biosensor substrate |
| JP5021408B2 (ja) * | 2007-09-26 | 2012-09-05 | 富士フイルム株式会社 | バイオセンサー |
| US8004669B1 (en) | 2007-12-18 | 2011-08-23 | Plexera Llc | SPR apparatus with a high performance fluid delivery system |
| FR2946433B1 (fr) | 2009-06-05 | 2013-07-12 | Ecole Polytechnique Dgar | Utilisation d'une couche de silicium amorphe et procede d'analyse |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8618133D0 (en) * | 1986-07-24 | 1986-09-03 | Pa Consulting Services | Biosensors |
| GB8705650D0 (en) * | 1987-03-10 | 1987-04-15 | Pa Consulting Services | Assay technique |
| DE19805809C2 (de) * | 1998-02-12 | 2000-02-17 | Biotul Bio Instr Gmbh | Bestimmung der Oberflächenplasmonen-Resonanz mit Hilfe von örtlich oder zeitlich modifizierten Schichten |
| JP2000039401A (ja) * | 1998-03-24 | 2000-02-08 | Dainippon Printing Co Ltd | 表面プラズモン共鳴バイオセンサ―用測定セル及びその製造方法 |
| DE19853428A1 (de) * | 1998-11-19 | 2000-05-25 | Biotul Bio Instr Gmbh | Biosensor mit modifizierter Edelmetalloberfläche und Verfahren zu seiner Herstellung |
| DE19817180C2 (de) * | 1998-04-17 | 2000-04-27 | Biotul Bio Instr Gmbh | Biosensor mit modifizierter Edelmetalloberfläche und Verfahren zu seiner Herstellung |
| DE19818360C2 (de) * | 1998-04-24 | 2000-05-31 | Suisse Electronique Microtech | Dextranbeschichtete Oberfläche |
-
2000
- 2000-12-22 DE DE2000164146 patent/DE10064146A1/de not_active Withdrawn
-
2001
- 2001-12-21 WO PCT/EP2001/015225 patent/WO2002052260A2/de not_active Ceased
- 2001-12-21 AU AU2002237253A patent/AU2002237253A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE10064146A1 (de) | 2002-07-04 |
| WO2002052260A2 (de) | 2002-07-04 |
| WO2002052260A3 (de) | 2002-11-14 |
| AU2002237253A1 (en) | 2002-07-08 |
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