WO2002074433A2 - Method and devices for applying reagents to punctiform locations - Google Patents
Method and devices for applying reagents to punctiform locations Download PDFInfo
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- WO2002074433A2 WO2002074433A2 PCT/EP2002/002940 EP0202940W WO02074433A2 WO 2002074433 A2 WO2002074433 A2 WO 2002074433A2 EP 0202940 W EP0202940 W EP 0202940W WO 02074433 A2 WO02074433 A2 WO 02074433A2
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- stamp
- pits
- carrier
- measuring carrier
- reagents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6813—Hybridisation assays
- C12Q1/6834—Enzymatic or biochemical coupling of nucleic acids to a solid phase
- C12Q1/6837—Enzymatic or biochemical coupling of nucleic acids to a solid phase using probe arrays or probe chips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00351—Means for dispensing and evacuation of reagents
- B01J2219/00382—Stamping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00497—Features relating to the solid phase supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00497—Features relating to the solid phase supports
- B01J2219/00527—Sheets
- B01J2219/00536—Sheets in the shape of disks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00585—Parallel processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00596—Solid-phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
- B01J2219/00612—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports the surface being inorganic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
- B01J2219/00614—Delimitation of the attachment areas
- B01J2219/00621—Delimitation of the attachment areas by physical means, e.g. trenches, raised areas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
- B01J2219/00623—Immobilisation or binding
- B01J2219/00626—Covalent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
- B01J2219/00632—Introduction of reactive groups to the surface
- B01J2219/00637—Introduction of reactive groups to the surface by coating it with another layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00659—Two-dimensional arrays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/0068—Means for controlling the apparatus of the process
- B01J2219/00702—Processes involving means for analysing and characterising the products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00718—Type of compounds synthesised
- B01J2219/0072—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C40—COMBINATORIAL TECHNOLOGY
- C40B—COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
- C40B60/00—Apparatus specially adapted for use in combinatorial chemistry or with libraries
- C40B60/14—Apparatus specially adapted for use in combinatorial chemistry or with libraries for creating libraries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/005—Assays involving biological materials from specific organisms or of a specific nature from viruses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/195—Assays involving biological materials from specific organisms or of a specific nature from bacteria
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2500/00—Screening for compounds of potential therapeutic value
Definitions
- the invention is based on methods and devices for applying reagents to punctiform points.
- Punctiform places are usually understood to mean those places which are in the order of magnitude of the pits of a CD (compact disc) or less. Such places do not have to be round, but can also have a substantially square, rectangular or other shape.
- the punctiform points preferably have dimensions in the micrometer range, for example diameters between 0.6 to 2.5 ⁇ m. Another example is a size of 0.6 x 0.9 ⁇ m or smaller.
- reagents are to be applied to punctiform areas.
- Molecules are to be applied to precisely defined, very small places on a single-use carrier. Very complex variations of different molecules are applied to different places. Direct and spatially reproducible addressing of the structures should be achieved. Such an arrangement could be used, among other things, for complex analytical detection methods, the majority of which are based on the optical detection of molecular properties.
- Another application would be the creation of molecular libraries on a support.
- So-called gene chips are either by direct synthesis of oligonucleotides on the support material or by systematic Application made using a pipetting robot. These methods can only be used to a limited extent. The density and precision of the spots is limited, which affects the quality.
- the invention has for its object to provide a way to apply a large number of different reagents to precisely addressable, selectable point-like locations on a measurement carrier.
- the invention proposes a method with the features mentioned in claim 1.
- the invention also proposes an apparatus for performing this method and a stamp. Further developments of the invention are the subject of dependent claims, the wording of which, like the wording of the abstract, is made by reference to the content of the description.
- CD-ROM Equally suitable as the CD are their further developments, such as CD-ROM, CD-R and DVD as well as magneto-optical and magnetic carriers.
- CD-ROM Compact Disc-ROM, CD-R and DVD
- magneto-optical and magnetic carriers are their further developments, such as magneto-optical and magnetic carriers.
- CD-ROM Compact Disc-ROM, CD-R and DVD as well as magneto-optical and magnetic carriers.
- CD-R magneto-optical and magnetic carriers.
- CD-R magneto-optical and magnetic carriers
- the method proposed by the invention proceeds in such a way that at least one stamp is used which has punctiform points which correspond exactly to a subset of the punctiform points of the measuring carrier. Correspondence is to be understood as a mirror image.
- the reagents are applied to the punctiform points of the stamp in a thin layer.
- the stamp is exactly aligned with the measuring carrier and placed or pressed onto it.
- the reagents are applied to the exact locations on which they are to be arranged.
- the pits of the subset are arranged within a coherent area of a measurement carrier and thus also of the stamp.
- Such a subset can contain, for example, 100,000 punctiform places, which are also referred to as pits within this description. It is assumed that the pits are arranged similar to a CD. However, it is not necessary to deal with depressions or elevations, but can also include those locations that can be optically distinguished from the surroundings in other ways.
- a stamp is used which addresses several subsets of pits of the measurement carrier by means of appropriately structured pits. These different subsets can then be provided with different reagents. This makes it possible to keep the number of stamps required small.
- a stamp can be used to apply several reagents to several subsets of pits.
- stamps can be used according to the invention. These can then be used one after the other to provide all pits of the measurement carrier with the appropriate materials. However, it is also possible and is proposed by the invention to use only a single stamp which applies all reagents to all pits of the measurement carrier.
- the reagents are applied to the pits of the stamp in a monomolecular layer, so that they are then applied to the pits of the measurement carrier in this layer when stamped on.
- the pits of the stamp are then released again.
- Such a stamp can be used immediately afterwards to take up a second layer of the same reagent or another reagent and to stamp it again on the measuring carrier. This can advantageously also be used to successively synthesize molecular components of a polymer chemically in the solid phase.
- the invention also proposes to use molecules that serve as a reagent in a combination. These molecules can be applied to the same pits one after the other.
- the invention therefore proposes to use the pits of the stamp to apply several different reagents to the same pits of the measuring carrier.
- a stamp can thus be used to stamp the same subsets of the measuring carrier with the same subsets of the stamp, which have different reagents.
- oligonucleotides and oligopeptides are synthesized using the so-called solid-phase technique on a solid phase.
- solid phase synthesis Each synthesis step chemically cleaves the protecting group of the previously bound nucleotide monomer with high efficiency. A new monomer is then applied in high concentration in order to achieve good saturation of the free binding sites.
- Such a solid phase synthesis is also used in the production of microarray gene chips, although optically reactive protective groups must be removed using lithographic masks and successive exposure. The nucleotide monomers are then applied over the entire chip surface.
- light-activated protective groups have the disadvantage that, on the one hand, they are split off spontaneously in small numbers and, on the other hand, less can be removed by exposure to light.
- the known conventional solid-phase synthesis (with chemically cleaved protective groups) can be used both for oligonucleotides and for oligopeptides on a corresponding array structure.
- the corresponding monomers or other polymer building blocks preferably in a highly concentrated solution, are applied to stamps and applied precisely to the corresponding carrier with the aid of these stamps.
- the remaining steps in the synthesis of the oligonucleotide or oligopeptide can be carried out using the conventional "chemical" solid phase technique.
- oligonucleotides / oligopeptides can be produced on the array surface, that is to say, for example, on the surface of a CD polycarbonate disk, without the need for protective groups which can be removed optically.
- This invention thus combines the advantages of (conventional) solid phase synthesis with those of so-called array technology.
- This aspect is to be illustrated below using the structure of an oligonucleotide. It is obvious that the corresponding technique can easily be transferred by a person skilled in the art to the production of compounds which consist of other chemical or biochemical building blocks, such as, for example, oligopeptides. In this case, for example, the corresponding amino acids are used instead of the corresponding nucleotide monomers.
- stamps are required for each position at which these nucleotides are to be incorporated, i. H. usually four stamps.
- the array surface is normally first provided with a linker, preferably a polycarbonate linker, which, however, can optionally also be applied together with the first monomers.
- the stamp is selected which fits to all locations on the support at which the synthesized oligonucleotide is to begin, for example, with monomer A.
- a high concentration of reactive monomers A (with protective group) is then applied to this stamp.
- the "first stamps" for the monomers C, G and T are selected and coated in a corresponding manner. Then the corresponding locations on the support are stamped and the monomers are transferred to these locations.
- the first stamps can also be used independently. It is not imperative that all the first stamps be coated with the monomers first and then transferred to the support.
- the unbound nucleotides are washed off the support and all protective groups are removed chemically (in one go). Then the stamps are selected that are required to add the second nucleotide monomers in the desired manner to the associated ones to apply already applied first monomers. These stamps are again coated with the corresponding monomers and these monomers (with protective group) are transferred / stamped onto the corresponding points. Then the washing step and the chemical removal of the protective groups take place again. This process is continued until the desired oligonucleotides have been synthesized. If, for example, oligonucleotides of 20 nucleic acids are to be produced at all of the locations on the support to be stamped, 20 * 4, ie 80 stamps, are required for their synthesis.
- the invention proposes to use a stamp pad as a possibility, which is filled, for example, with the aid of so-called microfluidics or by a pipetting robot.
- the stamp pad contains several reagents, it can be provided that the stamp is aligned with the stamp pad before it is brought into contact with the stamp pad.
- the stamp can be aligned in several positions with respect to a stamp pad.
- the pits of the measurement carrier and thus also of the plunger are arranged along at least one curve or line.
- the pits are arranged along at least one spiral if the measuring carrier is a rotating disk.
- portions are provided in which the curvature of the line along which the pits are arranged does not change or in a predetermined manner.
- the line can run in a straight line in these areas. While with a pure spiral the curvature changes at every point on the curve, areas can be created in which the arrangement of the pits is the same. This means that stamps can be used at several points on the measuring carrier.
- the pits of the measurement carrier and / or the stamp can be designed as elevations and / or depressions. They can also be formed in some other way if their surface properties can be distinguished visually from the surfaces surrounding them.
- the device proposed by the invention for carrying out the method contains a holder for the measuring carrier, at least one stamp which has pits corresponding to at least a subset of the pits of the measuring carrier, an alignment device for mutual alignment of the measuring carrier and stamp, and a device for wetting the pits of the stamp.
- the measuring carrier is circular disks, for example in Shape and size of CDs or the like. Then the usual methods for reading out reactions can be used with the CDs.
- the device for wetting the pits of the stamp can advantageously be a stamp pad, possibly also a plurality of stamp pads for one stamp.
- the ink pad can in particular have several departments with different reagents. These departments can be designed as coherent areas, which are mutually separated by partitions.
- the alignment of the stamp with respect to the measuring carrier can, for example, work mechanically, for example with the aid of three pyramid-like depressions in the measuring carrier and three corresponding projections of the stamp.
- An optical alignment option is also conceivable in which one or two crosshairs are brought into line.
- a similar alignment device can also be provided in order to align the stamp or a plurality of stamps with respect to the stamp pad, wherein a plurality of alignment positions can be provided here.
- a pressing device In order to bring the ink pad into contact with the measuring carrier in a reproducible manner, a pressing device can be provided.
- the invention also proposes a measuring carrier which has a multiplicity of punctiform points which are arranged in accordance with a predetermined pattern. These pits are provided with reagents, the type and arrangement of which are noted in a given data stream are.
- the punctiform points are subdivided into subsets, a specific reagent being provided for the punctiform points of each subset, which is to be used for a specific reaction.
- the subsets of pits are advantageously arranged in a coherent area.
- the invention also proposes a stamp for applying reagents to selected punctiform points on a measurement carrier having a multiplicity of punctiform points.
- Fig. 14 shows another way of producing a
- Submaster. Fig. 15 several types, such as the pits of stamps and
- Measuring carrier can be formed
- Fig. 17 shows the arrangement of several areas with identical
- the invention uses measuring carriers in which a multiplicity of point-shaped locations are arranged in accordance with a predetermined pattern. Therefore, a possibility is first described of how such measurement carriers can be manufactured in a precisely defined manner.
- Figure 1 shows schematically and simplified a cross section through a glass master 1, which is coated on one side with a photoresist 2. This forms the output for the creation of a master.
- Layer 2 of the photoresist is exposed with the aid of a controlled laser, the laser beam exposing point-like locations which are arranged along a spiral line. This forms the original spiral shown schematically in FIG. 2.
- a father 3 (see FIG. 3) is produced by nickel deposition, which thus represents a negative of the structure of FIG. 2.
- a further nickel deposition produces a mother structure 4 from the father 3, see FIG. 4.
- a son structure 5 is produced from the mother structure 4 by a further deposition process. Any number of son structures 5 can be produced.
- This son structure 5 is used to produce support structures 6 in the form of blank CDs with the aid of injection molding processes, on which all pits are present. This is shown in Figure 6. Any number of supports 6 can also be generated from any number of son structures 5.
- FIG. 7 shows how the glass master 1 shown in FIG. 2 exposes a glass master coated with negative photoresist. This results in a (“inverted”) negative substrate 7, which is shown in FIG. 7 above the glass master 1.
- a negative for a silicone stamp is produced by depositing nickel stamps or by renewed electroforming.
- This stamp 12 is shown in FIG. 9. It contains a subset of elevations 13, which are intended for contacting specific subsets of elevations 14 of the measuring carriers 6 shown in FIG.
- detector molecules can be applied to certain elevations or pits of the measuring carrier.
- FIGS. 10 and 11 show an embodiment in which a negative substrate 15 is produced through the master master after coating with negative photoresist and exposure.
- a negative substrate 18, mirror-image spiral, is produced from the negative substrate 15 by exposure. This negative substrate 18 is used in a similar way to produce a son substrate 16, see FIG. 12, with the aid of which an inverse CD 17 can be produced by injection molding.
- the pits protrude from the side of the CD facing away from the laser.
- a further substrate can be produced with the original spiral by exposure to a positive photoresist. This can be further processed according to FIGS. 8 and 9 into masters for silicone stamps, which subsets of the "negative" pits protruding from the CD can address.
- an etching mask is created by congruent mastering, which addresses defined subsets of lands. Applying a photo-resistive layer to a son and then exposing it through the congruent etching mask subsequently permits targeted etching of the son.
- FIG. 13 shows in more detail an alternative method step to the method shown in FIG. 8.
- a laser double head 20 contains two permanently connected laser heads.
- a laser head is used to generate a weak reading beam, represented by the double arrow 21.
- This Read beam 21 reads out the negatively oriented CD master 22.
- the laser head 20 contains a second strong laser, which generates a write beam 23 in a controlled manner.
- This write beam 23 can be switched on and off by the logic of the double head 20.
- a connected computer searches for the subset of the master's pits to be copied and controls the read-write logic.
- the fixed coupling of the two laser heads in conjunction with a definition of a parallel alignment to the axis of rotation, ensures a spatial 1: 1 structure of the subset structure of the pits.
- the actual procedure for manipulating the stamp consists in curing or introducing suitable material into the master stamp structure 24, which is held on the underside of a stamp holder 25, for example by negative pressure.
- Material on the underside of the stamp holder 25, for example plastic material 26, is cured by exposure to the writing beam 23.
- the excess material 26 is removed, for example by rinsing with solvent. Tracking is only in the reading direction, since both heads are rigidly connected and the entire head is moved. The focus is adjusted in both arms.
- FIG. 14 shows a device which is similar to the device according to FIG. 13. It is used here to create a positive sub-copy of a CD master. Connected by the axis 27, the CD master 22 and the sub copy 28 of the CD master to be produced rotate synchronously with one another. The side of the copy 28 facing the laser head 20 is coated with a layer 29 of photoresist which can be exposed by the writing beam 23. A connected computer searches for the subgroup of the master CD pits to be copied and controls the read-write logic. Attention is paid to an adapted focus size of the two beams, namely the reading beam 21 and the writing beam 23. With the same size of the focus of the two beams, this results in a 1: 1 copy of the pits.
- FIG. 13 shows a device which is similar to the device according to FIG. 13. It is used here to create a positive sub-copy of a CD master. Connected by the axis 27, the CD master 22 and the sub copy 28 of the CD master to be produced rotate synchronously with one another. The side
- this layer is transferred to the elevations 22 of the measurement carrier 20 upon contact between the stamp 21 and the measurement carrier 20.
- the punctiform points of the measurement carrier 20 are again designed as elevations 22.
- the punctiform points of the stamp 21, on the other hand, are formed as depressions 24. Such depressions 24 can serve to receive the reagent to be transferred as drops. This also allows the reagent to be transferred upon contact between the stamp 21 and the measuring carrier 20.
- FIG. 15 c shows a third possibility, in which the stamp 21 is designed with a smooth surface 25.
- the reagent to be transferred can also be applied to this smooth surface 25 as point-like spots. This also enables a transfer to the elevations 22 of the measurement carrier 20.
- the punctiform points of the measurement carrier 20 can also be designed differently, namely also as depressions or smooth Make a smooth surface so that the role of the stamp 21 and measuring carrier 20 can be reversed.
- Figure 16 shows a section of an ink pad.
- This stamp pad contains arcuate sections 26 in which a particular reagent is present.
- the departments are arranged in concentric circles, along a spiral or linear. They are separated from one another by areas 27, 28 without reagent.
- Each area 26 of the stamp pad corresponds to a specific area of punctiform points on the stamp and thus also on the measurement carrier. For example, 100,000 punctiform elevations can be arranged in a region of the stamp corresponding to a region 26, which then stamp a corresponding number of pits of the measurement carrier with a specific material.
- the invention uses circular disks in the form of conventional CDs or similar derivatives as measuring carriers.
- the pits on the CD's are arranged along a spiral that constantly changes their curvature. Deviations from a correct spiral shape can, however, be corrected by the usual reading devices.
- the invention now proposes to consciously produce deviations from the spiral shape, for example in the shape as shown in FIG. 17.
- the pits are arranged along a straight line, in which case the connection between the pits of one area and the pits of a next area is established by a line 31, which ensures that the spiral shape is achieved again overall.
- the provision of regions 29, 30 in which the curve has a constant curvature has the advantage that the regions 29, 30 can be processed with the same stamp. There is also no need for areas with straight lines trending arrangements of the pits to act. Concentric circles are also possible.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002336236A AU2002336236A1 (en) | 2001-03-16 | 2002-03-16 | Method and devices for applying reagents to punctiform locations |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10113708.7 | 2001-03-16 | ||
DE10113708A DE10113708A1 (en) | 2001-03-16 | 2001-03-16 | Applying reagents to measurement bearer pits involves aligning stamp relative to bearer and bringing stamp into contact with bearer, whereby reagent remains on corresponding bearer pits |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002074433A2 true WO2002074433A2 (en) | 2002-09-26 |
WO2002074433A3 WO2002074433A3 (en) | 2003-02-20 |
Family
ID=7678363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/002940 WO2002074433A2 (en) | 2001-03-16 | 2002-03-16 | Method and devices for applying reagents to punctiform locations |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002336236A1 (en) |
DE (1) | DE10113708A1 (en) |
WO (1) | WO2002074433A2 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4591567A (en) * | 1982-04-21 | 1986-05-27 | California Institute Of Technology | Recombinant DNA screening system including fixed array replicator and support |
WO1997007429A1 (en) * | 1995-08-18 | 1997-02-27 | President And Fellows Of Harvard College | Self-assembled monolayer directed patterning of surfaces |
DE19543232A1 (en) * | 1995-11-07 | 1997-05-15 | Knoell Hans Forschung Ev | Production of matrix-bound miniaturised combinatorial polymer and oligomer library |
WO1999051770A1 (en) * | 1998-04-03 | 1999-10-14 | Zuhong Lu | A method for the preparation of compound micro array chips and the compound micro array chips produced according to said method |
US6013446A (en) * | 1996-05-13 | 2000-01-11 | Motorola, Inc. | Methods and systems for biological reagent placement |
WO2000026677A1 (en) * | 1998-10-30 | 2000-05-11 | Burstein Laboratories, Inc. | Trackable optical discs with concurrently readable analyte material |
WO2000036416A1 (en) * | 1998-12-17 | 2000-06-22 | Kimberly-Clark Worldwide, Inc. | Patterned deposition of antibody binding proteins for optical diffraction-based biosensors |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4981783A (en) * | 1986-04-16 | 1991-01-01 | Montefiore Medical Center | Method for detecting pathological conditions |
US6368877B1 (en) * | 1997-06-25 | 2002-04-09 | Massachusetts Institute Of Technology | Self-assembling peptide surfaces for cell patterning and interactions |
DE19818999A1 (en) * | 1998-04-28 | 2000-01-20 | Biotechnolog Forschung Gmbh | Device for creating freely definable repertoires |
-
2001
- 2001-03-16 DE DE10113708A patent/DE10113708A1/en not_active Withdrawn
-
2002
- 2002-03-16 AU AU2002336236A patent/AU2002336236A1/en not_active Abandoned
- 2002-03-16 WO PCT/EP2002/002940 patent/WO2002074433A2/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4591567A (en) * | 1982-04-21 | 1986-05-27 | California Institute Of Technology | Recombinant DNA screening system including fixed array replicator and support |
WO1997007429A1 (en) * | 1995-08-18 | 1997-02-27 | President And Fellows Of Harvard College | Self-assembled monolayer directed patterning of surfaces |
DE19543232A1 (en) * | 1995-11-07 | 1997-05-15 | Knoell Hans Forschung Ev | Production of matrix-bound miniaturised combinatorial polymer and oligomer library |
US6013446A (en) * | 1996-05-13 | 2000-01-11 | Motorola, Inc. | Methods and systems for biological reagent placement |
WO1999051770A1 (en) * | 1998-04-03 | 1999-10-14 | Zuhong Lu | A method for the preparation of compound micro array chips and the compound micro array chips produced according to said method |
WO2000026677A1 (en) * | 1998-10-30 | 2000-05-11 | Burstein Laboratories, Inc. | Trackable optical discs with concurrently readable analyte material |
WO2000036416A1 (en) * | 1998-12-17 | 2000-06-22 | Kimberly-Clark Worldwide, Inc. | Patterned deposition of antibody binding proteins for optical diffraction-based biosensors |
Also Published As
Publication number | Publication date |
---|---|
WO2002074433A3 (en) | 2003-02-20 |
AU2002336236A1 (en) | 2002-10-03 |
DE10113708A1 (en) | 2002-09-19 |
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