EP3793720A1 - Mikroarray-transformer - Google Patents
Mikroarray-transformerInfo
- Publication number
- EP3793720A1 EP3793720A1 EP19724814.9A EP19724814A EP3793720A1 EP 3793720 A1 EP3793720 A1 EP 3793720A1 EP 19724814 A EP19724814 A EP 19724814A EP 3793720 A1 EP3793720 A1 EP 3793720A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- array
- dna
- molecules
- template
- spots
- 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.)
- Pending
Links
Classifications
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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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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16B—BIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
- G16B25/00—ICT specially adapted for hybridisation; ICT specially adapted for gene or protein expression
- G16B25/30—Microarray design
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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
- B01J2219/00527—Sheets
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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
- B01J2219/00608—DNA 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
- B01J2219/00583—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
- B01J2219/00659—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
- B01J2219/00718—Type of compounds synthesised
- B01J2219/0072—Organic compounds
- B01J2219/00722—Nucleotides
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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
- B01J2219/00725—Peptides
Definitions
- the invention relates to a method for microarray transformation in which, by using a transformation matrix cavity chip, a template array can be copied onto a planar support and the information or spatial arrangement is thereby changed so that a transformed second array results.
- the invention also relates to a device for carrying out such a method.
- DNA microarrays are an accumulation of many different, small dots (spots) with DNA on a solid substrate.
- spots small dots
- a relatively novel method for the production of DNA microarrays is to synthesize the DNA on the surface by means of a polymerase using a DNA template (W02009034181A2, W02010100265A1). This is a fixed
- primers synthesis starting points for the DNA polymerase.
- a mix consisting of the individual synthesis building blocks, the DNA polymerase and the template is added to this very surface.
- the synthesis is highly parallel up to several thousand points.
- the reaction space of each of these points was physically separated to ensure an independent synthesis reaction. This can represent a spatial separation over microcavities to the limitation of the diffusion.
- complementary DNA strands from DNA pools are hybridized to an existing DNA microarray.
- the complementary DNA molecules each have a reactive group with which it is possible to attach them to a second substrate in which both are brought into contact.
- This substrate now contains the complementary DNA molecules of the original DNA microarray and has the same local resolution.
- a copy produced in this way is comparable to the negative of an analogous photograph ([4], [5], [6], [1 1], [12], US20060141245A1),
- hybridized DNA molecules are significantly shorter than the DNA molecules of the DNA microarray to be amplified.
- the hybridized DNA molecules in this case serve as primers for a DNA extension reaction using DNA polymerase.
- the polymerase is an enzyme that can extend a DNA strand based on a template accordingly.
- a master cavity chip has DNA primers on its surface that are complementary to the DNA of an existing DNA microarray. This chip is filled with PCR mix and placed on the DNA microarray to be replicated. By means of a PCR, the information of the DNA of the DNA microarray is transferred into the master cavity chip and stored. In a second step, the cavity chip is filled again with PCR mix and closed with an empty microarray. Subsequently, another PCR is performed to transfer the DNA molecules from the master cavity chip to the new surface. This thus represents an exact replica of the original DNA microarray. (W02010100265A1)
- Output array always determines the shape of the spots and determined. Besides, they are
- an array is basically printed by a printer during a copying process.
- a single DNA sample must be used, which requires a lengthy preparation. This makes the process time consuming and costly.
- lengthy washing between printing operations is necessary to prevent and reduce contamination between spots.
- the spacing of the spots is chosen to be sufficiently large to prevent running into one another and contamination.
- Another disadvantage of the prior art methods is that the shape of the spots is very limited and only near-round spots are possible.
- the drying of the liquid spots has an effect on the homogeneity of the spots, so that there is a difference in the result between the edge area and the center of the spot.
- Each step of the synthesis requires a single mask and extends the DNA strand by only one base. There is a certain percentage of errors per step. As a result, the length of the DNA strand affects the quality of the result. After each step of the synthesis, a washing step must be performed and the mask replaced, making the method time-consuming and costly.
- the design of an array can only be costly and costly
- DNA is distributed digitally and randomized in a glass cavity chip and amplified by PCR.
- the production of the glass cavity chips is very complicated, and the patterns and spot shapes are limited to round and hexagonal arrangements. Furthermore, several different cavity shapes on an array are not possible. Operations such as zooming in and out are not possible with this method. It is also not possible to move spots or spot merging. A transformation of arrays is therefore excluded.
- the challenge or the task here is to get the information of the original one
- Microarrays of the prior art can not be changed after their production, except possibly extend or shorten. However, this is often only possible to a limited extent due to the poor quality of the primary DNA. Furthermore, existing formats of microarrays can not be "reformatted” purely physical, i. you always have to adapt the experiments and devices to the existing microarrays or do without experiments if suitable microarrays are not available. In addition, two microarrays can not be "put together" into one after their production.
- the invention relates to a method of microarray transformation comprising the following steps a) providing a template array, wherein the template array comprises a plurality of spots with template molecules and wherein the template molecules are preferably oligonucleotides, b) providing a cavity chip comprising a transfer matrix, c) providing a reaction mixture in the cavity chip, d) placing the precursor array on the cavity chip, e) copying process, wherein the oligonucleotides of the spots of the precursor array are copied onto the cavity chip f) providing an array surface.
- the invention thus provides a microarray which, in comparison to a
- Transfer matrix is the arrangement of the cavities and their design as well as their properties.
- reaction mixture and / or other reaction components are precoated in the cavity chip.
- Special cavity chips can be generated with any shape. These include small cavities with a specific shape in which the template molecules of the original microarray can be stored.
- RNA to cDNA wherein the sequence information is retained. It is also possible that the original template molecules or a part thereof are transferred to the cavity chip.
- an original oligonucleotide microarray (particularly preferably a DNA microarray) having a geometry 1, is transferred into a cavity chip with a geometry 2.
- the transmission can preferably take place by means of a PCR. But here are others too Methods with which biomolecules, such as DNA can be amplified, for example, isothermal DNA amplification, HDA, RPA or LAMP possible.
- the choice of primers during this transfer reaction which is also referred to as copying process in the context of the invention, also determines which spots of the original arrays are transmitted.
- the geometry 2 of the cavity chip can be transferred to a planar support, also referred to as an array surface, whereby a second-order microarray is formed.
- another transformation step can be carried out, into a cavity chip of geometry 3, whereby a 3rd order array is created. In principle, it is possible to reorder the original microarray in any order step by step.
- copying means both the 1: 1 copy (that is, for example DNA to DNA) and also other methods in which the information is copied, but the product differs from the starting molecule, e.g. DNA to protein, RNA to cDNA, RNA to protein or DNA to RNA.
- a product molecule different from the parent molecule is also called a derivative. All derivatives and derivatives of the starting molecules are possible and the person skilled in the art knows how to prepare the respective product molecules.
- RNA polymerase is used for the conversion of DNA to RNA.
- a reverse transcriptase is preferably used for the conversion of RNA into cDNA.
- DNA and / or RNA into proteins are preferably cell-free in vitro
- Transcriptional and / or translational mixes used. If DNA is to be copied to DNA, polymerases, RPA (Replication Protein A) or a system for helicase-dependent amplification (HDA) can be used.
- RPA Replication Protein A
- HDA system for helicase-dependent amplification
- a typical transformation process is preferably as follows:
- reaction mix e.g. PCR mix or cell-free expression system
- the optional steps can be combined as desired.
- the resulting shape of the resulting transformed spot is given here by the shape of the cavity of the cavity chip.
- the above-described process can also be used repeatedly and also again on already transformed arrays.
- the spatial arrangement e.g. the resulting pattern is preferably defined by the first copying step in the cavity chip.
- a modification of the molecules can also take place after that, so that a transformation of the information can take place at several points in time.
- sequence information e.g. a sequence information is retained.
- this also includes the translation of DNA or RNA into peptide sequences.
- steps a) to e) be repeated at least once, wherein the same cavity chip but another template array or the same template array is used in another or the same orientation.
- the template array and cavity chip are in a different orientation with respect to the repetitions. This can e.g. done by rotation of the cavity chip.
- the orientation may also be consistent, e.g. to get synergistic effects.
- the copying step comprises an amplification step.
- the amplification can be a PCR, an isothermal amplification or an RT-PCT.
- the amplification step may also describe a transcription or protein expression.
- reaction mix is a PCR mix, an isothermal amplification mix, a reverse transcription mix, a transcription mix, or a cell-free expression mix. It is also preferred that a protein synthesis takes place so that, for example, in the reaction mixture, enzymes are contained which transcribe DNA into RNA and translate RNA into protein.
- the template molecules are oligonucleotides, preferably DNA molecules or RNA molecules.
- a plurality of spots of the template array are combined in the cavity chip and / or further array, so as to produce a mixture of template molecules or the molecules derived therefrom and / or to generate a DNA or RNA which contains a plurality of partial sequences or Derivatives of these partial sequences of the template molecules from the respective spots comprises.
- spots from at least two template arrays in the further array are merged so as to create a mixture of copies and / or to produce a copy comprising a plurality of subsequences of these partial sequences
- Template molecules from the respective spots comprises.
- the invention relates to the method, wherein a spot of the template array in the further array is subdivided into a plurality of spots.
- DNA molecules be added in solution such that the molecules (template molecules or product molecules or an intermediate) are extended around this DNA sequence.
- the template molecules are DNA molecules that have all or part of short, identical DNA sequences of preferably 10-30 base pairs.
- the primers preferably carry an additional DNA sequence at the 3 'end or at the 5' end.
- the method wherein the additional sequences as a barcode for a
- Location information can be used and / or the primer can contain a sequence for T ranskription and / or cell-free synthesis It is preferred that the transformation is spatially and / or temporally limited.
- the spatial boundary is preferably given by the edge of the cavities.
- the time limit can be realized by different factors. Time-limited reaction conditions can be, for example, a temperature which is exceeded or fallen below, a pH which changes over time, the irradiation of light or electric fields.
- the invention makes it possible to change existing microarrays in terms of their spatial structure.
- spot shape, spot size and spot location It is possible to change the shape of the spots as you like, but also their position (up to the deletion of spots). This can find different applications depending on the geometry: a) In a transformation without relevant size changes, a spot is converted into a spot with approximately the same size, but the shape of the spot can be changed arbitrarily. Due to the transformation process extremely sharp edges are created and spots with previously impossible geometry can be created. b) When transforming into smaller sizes, a spot can turn into several small spots
- the DNA can be imaged in parallel or sequentially on the target spot. That the DNA may then end up being a mixture at the surface (several sequences side by side on the surface), or else a combination construct with one sequence attached to the other, thus also producing complete gene products.
- a microarray By performing multiple transformations, a microarray can theoretically be reformatted, spots removed or added from other arrays, or DNA or other biomolecules shortened or lengthened.
- An advantage of the invention is that it is thereby possible to construct or reformulate gene constructs or gene libraries combinatorially.
- first-order transformation (carrying out a first transformation) are versatile.
- a microarray in the desired spot shape be multiplied.
- Previous arrays are production-related "round".
- any structures are possible.
- an array of hexagons could be created in the first order (see also Fig. 1) and then converted back into circles in successive transformations. The same could also be shown the other way around.
- classically produced microarrays are always inhomogeneous within the single spot due to the manufacturing process.
- the transformation process of the invention is homogeneous over the entire surface, resulting in very homogeneous spots with very precise and almost arbitrary geometry. An application is therefore in the quality improvement of arrays.
- Another advantage is that multiple spots can be fused together to produce either a mixture of biomolecules such as DNA (2 or more species per spot) or a construct (e.g., fusion DNA) on the spot.
- a mixture of biomolecules such as DNA (2 or more species per spot) or a construct (e.g., fusion DNA) on the spot.
- a construct e.g., fusion DNA
- Another advantage is that a spot can be split into several small spots. This allows more accurate measurements, higher homogeneity, better binding kinetics (according to Ekins, Ambient Analyte Theory) and thus a higher signal yield.
- the transformation process requires only one cavity chip in addition to the output array, some reaction mix, e.g. PCR mix (usually between 5 and 10 pl) and a copy surface on which the 1st order array is applied. This makes the production more unique
- the device comprises a set of transformation matrices in the form of cavity chips, which depending on the order of their application, an affine
- This set of transformation matrices is then a set of individual operations that can replace each other.
- mathematical affine mapping that is, a point mirroring can also be done as a reflection followed by a 180 ° rotation.
- transformation method be used to produce DNA, RNA or proteins. It is preferably possible to generate new DNA combinations.
- the invention relates to a device for carrying out a transformation according to the invention, comprising
- a cavity chip comprising a transfer matrix
- the transfer matrix spatially limits the reaction. This is done in particular by the cavities and their borders.
- the invention relates to a cavity chip for carrying out a transformation process of the invention.
- the cavities of the cavity chip comprise a volume of less than 100 nl. Particularly preferred are volumes of less than 50 nl, most preferably less than 20 nl. It was surprising that particularly good results could also be achieved with volumes in the picoliter range.
- the shape of the cavities can be chosen arbitrarily. Round, hexagonal or triangular shapes are possible. In principle, however, any desired shape can be used.
- Example 1 Sequence, shape and / or space transformation a) ST Addition of different information per spot
- Step 1
- Two primary arrays form the initial position. Both arrays may have the same or different spot sizes, symmetries and spacings. The orientation of the DNA Molecules on the surface as well as the length of the DNA does not matter. The only common feature of both arrays is that all DNA molecules must have a similar, short homologous DNA sequence of about 10-30 base pairs, a so-called.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix. After completion of the PCR, the same DNA species are present in the transmitter chip, which are also present on the starting DNA microarray. Their spatial arrangement has also been preserved. As a result, both the spatial, as well as the content information of the primary array was thus transferred to the Mattermikchip.
- This transmitter chip is then placed on the second primary array. Again, a scan is performed using a standard PCR mix. Due to the homologous sequences of both original DNA microarrays, two scenarios are conceivable. If a DNA spot of the second microarray encounters an empty cavity, the DNA molecules are readily transferred into this cavity as in the first scan. However, if the DNA spot hits a cavity in which the DNA of the first starting array already exists, then both DNA strands are fused together on the cavity surface. New DNA molecules are created that carry both the information from the first and the second original DNA microarray.
- the stored information in the form of fused DNA molecules or original DNA molecules of the transmitter chip can be copied by PCR and a standard PCR mix to a new, empty, specially functionalized surface. b) ST Addition of the same information per spot
- planar introduction can be done by an array which has significantly larger structures than the transfer matrix, or over the entire transfer matrix, when the DNA is coated around the e.g. is to be extended, brings directly into solution.
- Step 1
- a primary array which contains a certain number of different DNA molecules.
- the spot size, symmetry, distances, and quantity does not matter, as well as the Orientation of the DNA molecules on the surface.
- an additional DNA sequence can be introduced by adding it in solution, so that the entire transfer area is extended or changed by this DNA sequence.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix. After completion of the PCR, the same DNA species are present in the transmitter chip, which are also present on the starting DNA microarray. Their spatial arrangement has also been preserved. As a result, both the spatial, as well as the content information of the primary array was thus transferred to the Mattermikchip.
- the transmitter chip is now filled with fresh DNA mix and a template, which has homologous sequences to the already existing DNA molecules. This template is added in abundance, so that it can not impoverish in the subsequent fusion PCR.
- the cavity chip is now sealed with a non-functionalized surface and then a standard PCR is performed.
- the stored information in the form of DNA molecules of the transmitter chip can be copied to a new, empty, specially functionalized surface by means of PCR and a standard PCR mix.
- Step 1
- Step 2 It is used primary array, which contains a certain number of different DNA molecules.
- the spot size, symmetry, spacings and quantity are irrelevant, as well as the orientation of the DNA molecules on the surface.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix.
- the DNA of the primary array can be transferred by PCR into the transmitter chip by selecting the primer used in full length or partial length. The spatial information is completely preserved.
- the stored information in the form of DNA molecules of the transmitter chip can be copied by PCR and a standard PCR mix to a new, empty, specially functionalized surface. d) RT Zoom
- Step 1
- the spot size, symmetry, distances, and quantity are irrelevant, as well as the orientation of the DNA molecules on the surface.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix.
- the geometry and arrangement of the transmitter chip is chosen so that it is equal to that of the output microarray.
- the cavity diameter is chosen so that the cavity is either larger or smaller than the DNA spot of the primary array.
- the stored information in the form of DNA molecules of the transmitter chip can be copied to a new, empty, specially functionalized surface by means of PCR and a standard PCR mix. e) RT rotation
- Step 1
- Step 2 It is used primary array, which contains a certain number of different DNA molecules.
- the spot size, symmetry, spacings and quantity are irrelevant, as well as the orientation of the DNA molecules on the surface.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix. After completion of the PCR, the same DNA species are present in the transmitter chip, which are also present on the starting DNA microarray. Their spatial arrangement has also been preserved. As a result, both the spatial, as well as the content information of the primary array was thus transferred to the Mattermikchip.
- Step 4 The transmitter chip is rotated by a certain angle and by a certain point.
- the stored information in the form of DNA molecules of the transmitter chip can be copied to a new, empty, specially functionalized surface by means of PCR and a standard PCR mix.
- Step 1
- the spot size, symmetry, spacings and quantity are irrelevant, as well as the orientation of the DNA molecules on the surface.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix. After completion of the PCR, the same DNA species are present in the transmitter chip, which are also present on the output DNA microarray. Their spatial arrangement has also been preserved. As a result, both the spatial, as well as the content information of the primary array was thus transferred to the Mattermikchip.
- the transmitter chip is shifted by a certain length in the x or y direction.
- the stored information in the form of DNA molecules of the transmitter chip can be copied by PCR and a standard PCR mix to a new, empty, specially functionalized surface.
- Step 1
- the spot size, symmetry, distances, and quantity are irrelevant, as well as the orientation of the DNA molecules on the surface.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix.
- the structure of the transmitter chip is chosen so that any number of points of the primary array is transferred to the same structure of the transmitter chip.
- the biomolecules are not fused thereby, but merely mixed in the same structure.
- the stored information in the form of DNA molecules of the transmitter chip can be copied by PCR and a standard PCR mix to a new, empty, specially functionalized surface.
- the resulting secondary array now consists of mixed spots. Individual monoclonal spots may also be present depending on the choice of the structure of the transmitter chip. h) RT resolution
- Step 1
- the spot size, symmetry, distances, and quantity are irrelevant, as well as the orientation of the DNA molecules on the surface.
- a scan of one of the primary arrays is made by means of a transmitter chip and a conventional PCR mix by means of PCR.
- the structure of the transmitter chip is chosen so that either more or fewer structures compared to the primary array are available.
- the stored information in the form of DNA molecules of the transmitter chip can be copied by PCR and a standard PCR mix to a new, empty, specially functionalized surface.
- the resulting secondary array now consists of more or fewer spots compared to the primary array.
- Step 1
- the spot size, symmetry, distances, and quantity are irrelevant, as well as the orientation of the DNA molecules on the surface.
- a scan of one of the primary arrays is made by PCR using a transmitter chip and a conventional PCR mix.
- the structure of the transmitter chip is chosen to have a different shape than the spots of the primary array (e.g., stars or elongated spots).
- Transmitter chip which are also present on the initial DNA microarray. Their spatial arrangement has also been preserved. As a result, both the spatial, as well as the content information of the primary array was thus transferred to the thesisakachip.
- the stored information in the form of DNA molecules of the transmitter chip can be copied by PCR and a standard PCR mix to a new, empty, specially functionalized surface.
- the resulting secondary array now consists of spots of different shape compared to the primary array.
- FIG. 1 Regressive transformation (big to small). An array of hexagons has been transformed into smaller circles. The illustration shows a section of 2 hexagons.
- FIG. 1 Progressive transform (small to large) The array on the left was transformed into a large spot array (right) with much larger cavities. Depending on the exact location of the original spots different products can be produced.
- the lower red dot (A) was transformed into a red circle (A) with a much larger diameter.
- the red dot (A) above was fused with the overlying green dot (C) to a yellow circle (B).
- a green spot Small on the left, large on the right
- 2 green (C) and 2 red spots (A) (left) were converted to a traffic light (red (A), yellow (B), green (C) (right)).
- FIG. 3 Allocation of the transformation The data from FIG. 2 were superimposed here in order to render the transformation clearer. One sees very well, which small spots as germs of the have contributed to larger spots. Some of the small red spots did not produce any signal in this experiment. For the green points, there is a much clearer allocation.
- FIGS 4 to 17 show particularly preferred embodiments of the invention.
- Microarrays are printed, i. tiny drops come to a surface and are then different in size (A), not exactly in position (B) or inhomogeneous or have an irregular shape (C), etc. Automated capture of spots is difficult.
- FIG. 5 structure optimization
- Microarrays are printed, i. the drops usually have roundish to oval shapes, now any structures can be created
- FIG. 6 Reduction 1
- the format of arrays is determined by the printing process, i.
- the size of the spots is limited by the minimum delivery amount down, as well as their distance to avoid bleeding the spots
- the format of arrays is determined by the printing process, i.
- the size of the spots is limited by the minimum delivery amount down, as well as their distance to avoid bleeding the spots
- FIG. 9 Enlargement 1
- the format of arrays is determined by the printing process, i. the size of the spots is limited by the maximum delivery amount and concentration upwards.
- Figures 10, 11 and 12 magnification 2a, 2b and 2c
- the DNA of individual spots can not be subsequently fused or mixed to allow for additive effects (for example, when two DNAs together first interact with a protein), or allosteric effects (when a DNA is needed to activate or activate a protein) which then binds to another DNA, eg, initiation sequences or the lac promoter or lac repressor).
- Two or more spots can be fused and the DNA mixed either side by side, or linearly one after the other.
- FIG. 16 Splitting
- the DNA is first taken from a template 1, then from a template 2, to then produce as a result a combinatorial mixture. It is thus possible to generate a total of n * m combinatorial mixtures with n and m spots on the original arrays.
- FIG. 23 shows a schematic representation of a typical transformation process.
- Cavity chips with a reaction mix e.g. PCR mix or cell-free expression system and placement of the original array on the cavity chip
- b Performing a copying reaction, e.g. a PCR.
- c opening, washing and blocking of the chip
- d filling of the cavity chip with reaction mix and sealing it with an empty array surface.
- e performing a copying reaction, e.g. a PCR.
- f washing and blocking of the newly formed array (transformed array) and the cavity chip.
- Figure 24 shows another example of a possible application.
- Transmitter chip Also called cavity chip; Device used for local
- Microarray which serves as Ausganslage and was produced according to the current state of the art; preferably DNA or RNA array
- Transformation is made. It represents the end result of the array transformation.
- RT space transformation changing the information of the location and / or the geometry compared to the primary array
- RT resolution space transformation resolution change increase or
- Each cavity of the transmitter chip hits one or more points of the primary array. No points are left out.
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PCT/EP2019/062502 WO2019219757A1 (de) | 2018-05-15 | 2019-05-15 | Mikroarray-transformer |
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- 2019-05-15 WO PCT/EP2019/062502 patent/WO2019219757A1/de unknown
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CN112218708A (zh) | 2021-01-12 |
CN112218708B (zh) | 2023-06-16 |
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