EP1507591A1 - Method for transferring molecules from a chemically reacting first flow into an adjacent chemically second reacting flow - Google Patents
Method for transferring molecules from a chemically reacting first flow into an adjacent chemically second reacting flowInfo
- Publication number
- EP1507591A1 EP1507591A1 EP03755135A EP03755135A EP1507591A1 EP 1507591 A1 EP1507591 A1 EP 1507591A1 EP 03755135 A EP03755135 A EP 03755135A EP 03755135 A EP03755135 A EP 03755135A EP 1507591 A1 EP1507591 A1 EP 1507591A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- flows
- molecule
- microparticle
- electrodes
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 230000005684 electric field Effects 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 239000011859 microparticle Substances 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 3
- 239000007853 buffer solution Substances 0.000 claims abstract 2
- 238000002032 lab-on-a-chip Methods 0.000 claims description 3
- 238000007877 drug screening Methods 0.000 claims 1
- 238000003541 multi-stage reaction Methods 0.000 claims 1
- 230000002123 temporal effect Effects 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 10
- 239000000243 solution Substances 0.000 description 23
- 239000002245 particle Substances 0.000 description 13
- 108020004414 DNA Proteins 0.000 description 9
- 239000000872 buffer Substances 0.000 description 8
- 108090000790 Enzymes Proteins 0.000 description 5
- 102000004190 Enzymes Human genes 0.000 description 5
- 230000003321 amplification Effects 0.000 description 5
- 229920001222 biopolymer Polymers 0.000 description 5
- 230000010354 integration Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 108020004707 nucleic acids Proteins 0.000 description 4
- 102000039446 nucleic acids Human genes 0.000 description 4
- 150000007523 nucleic acids Chemical class 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002777 nucleoside Substances 0.000 description 3
- 238000003752 polymerase chain reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000000018 DNA microarray Methods 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000008004 cell lysis buffer Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 238000009396 hybridization Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000003833 nucleoside derivatives Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 108091008146 restriction endonucleases Proteins 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000006820 DNA synthesis Effects 0.000 description 1
- 102000003960 Ligases Human genes 0.000 description 1
- 108090000364 Ligases Proteins 0.000 description 1
- 108091081062 Repeated sequence (DNA) Proteins 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
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- 238000011138 biotechnological process Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000003508 chemical denaturation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012139 lysis buffer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000003835 nucleoside group Chemical group 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 239000013612 plasmid Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000006239 protecting group Chemical group 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011535 reaction buffer Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D57/00—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C
- B01D57/02—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C by electrophoresis
-
- 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
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
-
- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00783—Laminate assemblies, i.e. the reactor comprising a stack of plates
-
- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00851—Additional features
- B01J2219/00853—Employing electrode arrangements
-
- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00905—Separation
-
- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00925—Irradiation
- B01J2219/0093—Electric or magnetic energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0636—Focussing flows, e.g. to laminate flows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/10—Integrating sample preparation and analysis in single entity, e.g. lab-on-a-chip concept
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0415—Moving fluids with specific forces or mechanical means specific forces electrical forces, e.g. electrokinetic
Definitions
- the invention relates to a method for transferring molecules from a chemically reacting first stream into an adjacent chemically reacting second stream, that is to say a method in which molecules are selectively transferred between at least two chemically reacting flows.
- biopolymers using chemical and enzymatic reagents often requires a large number of steps under different conditions in biotechnology. This requires an increasing number of steps, variety, parallelism and integration with increasingly programmable reaction management.
- biopolymer processing operations include synthesis, amplification, separation, selection, modification, cutting and assembly, labeling, detection, sorting, nano assembly and reaction control.
- synthesis, amplification, separation, selection, modification, cutting and assembly labeling, detection, sorting, nano assembly and reaction control.
- detection, sorting nano assembly and reaction control.
- nano assembly and reaction control Especially in "lab-on-a-chip” applications, a complete automated and self-sufficient sample processing is sought.
- the invention contributes to this broad technical field of application, in which computer-controlled and parallel transfer of biopolymers in small volumes between a large number of different reaction solutions.
- microreactor systems with electrical fields is generally limited to arrangements that generate fields in the longitudinal direction of the flow and thus only use the electrophoretic effect for particle separation or serve to transport the particles.
- the fields created can be pulsed or harmonically modulated fields that are actually capable of avoiding electrolysis within certain parameter limits (concentration, current density, potential differences).
- An adaptation to the particle types, however, is hardly possible.
- the use of protected electrodes by gels or polymers prevents the rigid attachment of ions and the redox conversion of the particles to be transported.
- the static biochips currently mostly used only allow a few process steps per chip. This makes further process integration very difficult.
- the invention proposes a method according to claim 1; individual embodiments of the invention are specified in the subclaims.
- the invention therefore describes a method for converting a molecule, molecular complex or microparticle in a first flow into a second flow flowing adjacent to the first flow and contacting it at least in regions along a boundary layer, the at least two laminar flows having different chemical compositions, which contain, in particular, mutually incompatible reaction agents (for example catalysts, buffers) in order to cause reactions on the molecule, molecular complex or microparticles to be transferred, it also being provided that
- reaction agents for example catalysts, buffers
- the invention thus proposes (bio) molecules or (bio) molecule complexes induced by electrical fields from a first flowing medium with which the molecule can initiate a (bio) chemical reaction into a second flowing medium to which the molecule can also react (bio-) chemically.
- the transfer of the reactant in the form of the (bio) molecule or complex thus takes place in the flow.
- the peculiarity of the invention consists precisely in this selective addressing, which takes place through the parameters of the electric field.
- Inhomogeneous electric fields have proven to be particularly advantageous for transverse transport.
- the transverse transport according to the invention preferably utilizes the dipole moment of a molecule, a molecular complex or a particle, which follows this in particular in an inhomogeneous electric field.
- the type of application of the electric fields is selected such that the flowing media are not exposed to any electrochemical reactions.
- Electrodes are inserted into the channel in a sequence that runs transversely to the direction of flow so that they do not disturb the flow conditions.
- the electrode spacing ranges between l ⁇ m and lOO ⁇ m depending on the channel width and task. If the induced transport path is longer than the width of the mixture layer, molecules can be affected by a reaction condition, i.e. Reaction solution to the other (and returned if desired).
- the molecules can be the biomolecules themselves or other reagents (see Fig. 1).
- the electrodes are addressed individually and pulsed with digital voltages or by means of analog voltages in such a way that particle transport starts due to electrophoresis or electromigration across the flow direction.
- digital voltages with which the pulse duration and duty cycle can be set, electrolytic phenomena, especially in the high salt area, can be avoided by undermining the electrode kinetics.
- Electrodes with gels or polymers prevent the rigid attachment of ions and the redox conversion of the particles to be transported. 5.
- the individual control of the electrodes also makes it possible to adapt the electrical parameters to the types of particles to be moved, so that neighboring types of particles are influenced less or not at all.
- the use of the neighboring 'laminar flow technology allows a high degree of integration and prevents contamination.
- the electrode-controlled transfer of biomolecules between solutions is quick and reversible and can even cause the samples to concentrate with minimal losses.
- the use of the digital fields enables individual control of a large number of electrodes, so that the particles can be specifically addressed and disruptive effects such as electrolytic phenomena can be avoided.
- Very small field strengths can be achieved by using small rectangular electrodes with small distances between them.
- the fields can be made inhomogeneous, so that particles with a stronger dipole than ion character can also be influenced effectively.
- PCR polymerase chain reaction
- the clinical diagnosis of pathogenic organisms usually consists of several reaction steps, the reaction conditions of which are incompatible. The most important steps are the disruption of the cells and the extraction and detection of the nucleic acid.
- it is possible to disrupt cells by adding lysis buffer in order to release genomic or plasmid DNA. After digestion, unnecessary cell components, such as cell wall pieces or proteins, have to be removed.
- This DNA preparation can be solved by adjacent laminar flows if the cells are placed in cell lysis buffer in one channel and a transport buffer in the adjacent channel.
- the DNA will be transferred from the cell lysis buffer into a transport buffer using electrical fields which are directed transversely to the direction of flow and can be used directly for further manipulations, such as restriction, or for detection, e.g. by means of hybridization.
- a problem with the multiple restriction digestion of DNA is the sometimes very different buffer conditions of the individual restriction enzymes. Adjacent laminar flows can solve this problem if the various buffers with the corresponding enzymes run side by side and only the DNA is transferred.
- the cut DNA can be ligated in a further channel with the appropriate enzyme / reaction solution with a target sequence.
- nucleic acids consists of the repeated sequence of several work steps.
- a start nucleoside is elongated by coupling 5 'chemically protected nucleosides.
- the protective group is then removed and the next nucleoside is coupled.
- the product is chemically oxidized.
- the individual steps can be solved by the arrangement of the corresponding laminar flows and the electrode-induced transport of the growing synthesis product according to the invention.
- Fig. 1 A microstructured channel system with sudden contact of the laminar flows.
- the white arrows indicate the direction of the laminar flows (1).
- (2) marks the contact point of these rivers.
- the dark rectangles (3) stand for electrode arrays with which components can be transferred from one flow to another. The method is not limited to two parallel channels
- Fig. 2 A microstructured channel system with a switching channel (4).
- the labeling is analogous to Fig. 1.
- the process is not limited to two channels.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10223138 | 2002-05-24 | ||
DE10223138 | 2002-05-24 | ||
PCT/EP2003/005500 WO2003099440A1 (en) | 2002-05-24 | 2003-05-26 | Method for transferring molecules from a chemically reacting first flow into an adjacent chemically second reacting flow |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1507591A1 true EP1507591A1 (en) | 2005-02-23 |
Family
ID=29557288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03755135A Withdrawn EP1507591A1 (en) | 2002-05-24 | 2003-05-26 | Method for transferring molecules from a chemically reacting first flow into an adjacent chemically second reacting flow |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1507591A1 (en) |
AU (1) | AU2003232825A1 (en) |
WO (1) | WO2003099440A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004047953A1 (en) * | 2004-10-01 | 2006-04-20 | Rudolf Rigler | Selection of particle possessing predetermined property from population encompassing multiplicity of different particles, comprises providing population of different particles, and labeling particles which possess predetermined property |
EP3011305B1 (en) * | 2013-06-19 | 2022-08-10 | Universiteit Leiden | Two-phase electroextraction from moving phases |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996012540A1 (en) * | 1994-10-22 | 1996-05-02 | Central Research Laboratories Limited | Method and apparatus for diffusive transfer between immiscible fluids |
US5971158A (en) * | 1996-06-14 | 1999-10-26 | University Of Washington | Absorption-enhanced differential extraction device |
WO1998010267A1 (en) * | 1996-09-04 | 1998-03-12 | Technical University Of Denmark | A micro flow system for particle separation and analysis |
JP2004530044A (en) * | 2001-04-12 | 2004-09-30 | アストラゼネカ アクチボラグ | Micro-engineered reactor |
-
2003
- 2003-05-26 WO PCT/EP2003/005500 patent/WO2003099440A1/en not_active Application Discontinuation
- 2003-05-26 EP EP03755135A patent/EP1507591A1/en not_active Withdrawn
- 2003-05-26 AU AU2003232825A patent/AU2003232825A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03099440A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2003232825A1 (en) | 2003-12-12 |
WO2003099440A1 (en) | 2003-12-04 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MATHIS, HARALD Inventor name: RUECKER, THOMAS Inventor name: MCCASKILL, JOHN, SIMPSON |
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