EP1507591A1 - Verfahren zum überführen von molekülen aus einem chemisch reagierenden ersten strom in einen benachbarten chemisch reagierenden zweiten strom - Google Patents
Verfahren zum überführen von molekülen aus einem chemisch reagierenden ersten strom in einen benachbarten chemisch reagierenden zweiten stromInfo
- 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- Withdrawn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
Classifications
-
- 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.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Molecular Biology (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
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 (de) | 2002-05-24 | 2003-05-26 | Verfahren zum überführen von molekülen aus einem chemisch reagierenden ersten strom in einen benachbarten chemisch reagierenden zweiten strom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1507591A1 true EP1507591A1 (de) | 2005-02-23 |
Family
ID=29557288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03755135A Withdrawn EP1507591A1 (de) | 2002-05-24 | 2003-05-26 | Verfahren zum überführen von molekülen aus einem chemisch reagierenden ersten strom in einen benachbarten chemisch reagierenden zweiten strom |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1507591A1 (de) |
| AU (1) | AU2003232825A1 (de) |
| WO (1) | WO2003099440A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004047953A1 (de) * | 2004-10-01 | 2006-04-20 | Rudolf Rigler | Selektion von Partikeln im laminaren Fluss |
| US11504645B2 (en) | 2013-06-19 | 2022-11-22 | Universiteit Leiden | Two-phase electroextraction from moving phases |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4015187B2 (ja) * | 1994-10-22 | 2007-11-28 | ブリティッシュ ニュークリア フュエルズ パブリック リミティド カンパニー | 不混和性流体間の拡散移動のための方法及び装置 |
| DE69728269T2 (de) * | 1996-06-14 | 2005-03-10 | University Of Washington, Seattle | Absorbtionsverbessertes differentielles extraktionsverfahren |
| JP2002503334A (ja) * | 1996-09-04 | 2002-01-29 | テクニカル ユニバーシティ オブ デンマーク | 粒子の分離と分析用のマイクロフローシステム |
| WO2002083988A2 (en) * | 2001-04-12 | 2002-10-24 | Astra Zeneca Ab | Micro-engineered reactors |
-
2003
- 2003-05-26 EP EP03755135A patent/EP1507591A1/de not_active Withdrawn
- 2003-05-26 AU AU2003232825A patent/AU2003232825A1/en not_active Abandoned
- 2003-05-26 WO PCT/EP2003/005500 patent/WO2003099440A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03099440A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003232825A1 (en) | 2003-12-12 |
| WO2003099440A1 (de) | 2003-12-04 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20041127 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
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| AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
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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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| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20100630 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20110111 |