EP1807208B1 - Arrangement for integrated and automated dna or protein analysis in a single-use cartridge, method for producing such a cartridge and operating method for dna or protein analysis using such a cartridge - Google Patents
Arrangement for integrated and automated dna or protein analysis in a single-use cartridge, method for producing such a cartridge and operating method for dna or protein analysis using such a cartridge Download PDFInfo
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- EP1807208B1 EP1807208B1 EP05801513A EP05801513A EP1807208B1 EP 1807208 B1 EP1807208 B1 EP 1807208B1 EP 05801513 A EP05801513 A EP 05801513A EP 05801513 A EP05801513 A EP 05801513A EP 1807208 B1 EP1807208 B1 EP 1807208B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502723—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by venting arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/11—Automated chemical analysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/2575—Volumetric liquid transfer
Description
Anordnung zur integrierten und automatisierten DNA- oder Protein-Analyse in einer einmal verwendbaren Cartridge, Herstellungsverfahren für eine solche Cartridge und Betriebsverfahren der DNA- oder Protein-Analyse unter Verwendung einer solchen CartridgeArrangement for integrated and automated DNA or protein analysis in a single-use cartridge, production method for such a cartridge and operating method of DNA or protein analysis using such a cartridge
Die Erfindung bezieht sich auf eine Anordnung zur integrierten und automatisierten DNA- oder Protein-Analyse in einer einmal verwendbaren Cartridge. Als Cartridge wird dabei eine flache Karte im Scheckkartenformat bezeichnet. Daneben bezieht sich die Erfindung auf die Herstellung einer solchen Cartridge. Schließlich bezieht sich die Erfindung auch auf ein Betriebsverfahren für eine DNA- oder Protein-Analyse unter Verwendung einer solchen Cartridge.The invention relates to an assembly for integrated and automated DNA or protein analysis in a disposable cartridge. Cartridge is a flat card in credit card format. In addition, the invention relates to the production of such a cartridge. Finally, the invention also relates to an operational method for DNA or protein analysis using such a cartridge.
Zur Nukleinsäureanalytik, beispielsweise zur Analytik von weißen Blutzellen aus Vollblut, zwecks Beantwortung von humangenomischen Fragestellungen müssen zunächst in einer ersten Station als Probenvorbereitungsschritt die Zellen aufgebrochen und anschließend die dabei freigesetzte DNA isoliert werden. In einer zweiten Station erfolgt eine PCR (Polymerase Chain Reaction = Polymerase-Ketten-Reaktion) zur selektiven DNA-Vervielfältigung (Amplifikation), um die Konzentration der nachzuweisenden DNA soweit zu erhöhen, dass diese in einer dritten Station nachgewiesen werden kann.For nucleic acid analysis, for example for the analysis of white blood cells from whole blood, in order to answer human-genomic questions, the cells must first be broken open in a first station as a sample preparation step and then the DNA released in the process must be isolated. In a second station, a PCR (Polymerase Chain Reaction = polymerase chain reaction) for selective DNA amplification (amplification), in order to increase the concentration of the DNA to be detected so far that it can be detected in a third station.
Im Labor werden letztere Teilprozesse separat nach bekanntem Stand der Technik durchgeführt. Die vorstehend erläuterten drei Stationen beinhalten jeweils mehrere Arbeitsschritte und werden voneinander unabhängig mit unterschiedlichen Geräten durchgeführt. Die einzelnen Arbeitsschritte erfolgen weitgehend manuell.In the laboratory, the latter sub-processes are carried out separately according to the known state of the art. The three stations explained above each involve several work steps and are performed independently of each other with different devices. The individual steps are largely manual.
Die Realisierung dieser Schritte ist vom Vorhandensein von Laborgeräten - wie einer Zellaufschluss-Apparatur, einem PCR-Gerät (sog. Thermocycler), evtl. einem PCR-Gerät, das für quantitative PCR geeignet ist, einer Elektrophorese-Apparatur, einer Hybridisierungsstation, einem optischen Reader, sog. Eppendorf-Tubes, mehreren Pipettier-Geräten sowie einem Kühlbehälter für Reagenzien - abhängig und muss von geschultem Personal unter Einhaltung von Sicherheitsvorschriften bezüglich Infektionsgefahr, Abfallentsorgung od. dgl. durchgeführt werden. Insbesondere müssen mehrere volumetrische, d.h. genaue, Dosierungen (Pipettieren) von Reagenzlösungen durchgeführt werden. Solche Arbeitsschritte sind zeitaufwendig und kostenintensiv.The realization of these steps is the presence of laboratory equipment - such as a cell disruption apparatus, a PCR device (so-called Thermocycler), possibly a PCR device, which is for quantitative PCR is suitable, an electrophoresis apparatus, a hybridization station, an optical reader, so-called Eppendorf Tubes, several pipetting devices and a cooling container for reagents - depending and must od trained personnel in compliance with safety regulations regarding risk of infection, waste disposal od . be performed. In particular, multiple volumetric, ie accurate, dosages (pipetting) of reagent solutions must be performed. Such steps are time consuming and costly.
Vom Stand der Technik sind Einrichtungen zur biochemischen Analyse bekannt, die entsprechend der
Davon ausgehend ist Aufgabe der Erfindung die Realisierung eines preisgünstigen, einfach handhabbaren, kompletten DNA-oder Protein-Analyse-Vorganges in einer miniaturisierten Cartridge. Insbesondere sollen folgende Verbesserungen im Vergleich zur Labormethode realisiert werden:
- Eine vollständige Integration aller Stoffe (evtl. außer Wasser) in einer geschlossenen einmal verwendbaren Cartridge;
- eine Bevorratung der Reagenzien in einer bei Raumtemperatur lagerstabilen Form;
- eine automatische Durchführung aller Prozesse in der Cartridge;
- keine manuellen Arbeitsschritte, außer Injektion der zu analysierenden Probe, z.B. Blut;
- Kein direkter Kontakt mit gesundheitsgefährdenden Stoffen (Blut und Reagenzien-Abfall verbleiben in der Cartridge);
- Cartridge-Geometrie erlaubt eine effiziente und schnelle Thermozyklisierung;
- alle Detektionsvorgänge sollen elektrisch ablaufen und einfach auszulesen sein;
- die verwendete Cartridge ist klein und kostengünstig herzustellen.
- A complete integration of all substances (possibly water) in a closed single-use cartridge;
- storage of the reagents in a storage-stable form at room temperature;
- an automatic execution of all processes in the cartridge;
- no manual operations, except injection of the sample to be analyzed, eg blood;
- No direct contact with harmful substances (blood and reagent waste remain in the cartridge);
- Cartridge geometry allows efficient and fast thermocycling;
- all detection processes should be electrical and easy to read out;
- The cartridge used is small and inexpensive to manufacture.
Die Aufgabe ist erfindungsgemäß durch eine Anordnung mit einer Cartridge gemäß Patentanspruch 1 gelöst. Die Herstellung einer solchen Cartridge ist Gegenstand des Patentanspruches 33. Betriebsverfahren mit solchen Cartridges sind Gegenstand der nebengeordneten Patentansprüche 37 und 41. Dabei ist Anspruch 37 auf die DNA-Analyse und Anspruch 41 auf die Protein-Analyse gerichtet. Weiterbildungen der Anordnung, des Herstellungsverfahrens und der Betriebsweise bei der Analyse sind in den jeweiligen Unteransprüchen angegeben.The object is achieved by an arrangement with a cartridge according to claim 1. The production of such a cartridge is the subject of claim 33. Operating methods with such cartridges are the subject of the independent claims 37 and 41. In this case, claim 37 is directed to the DNA analysis and claim 41 to the protein analysis. Further developments of the arrangement, the manufacturing method and the operation in the analysis are given in the respective subclaims.
Die Erfindung geht insbesondere von der
Demgegenüber ist Gegenstand der Erfindung eine solche einmal verwendbare Cartridge mit einem System aus Mikrokanälen und/oder Mikrokavitäten für einen vorgegebenen Prozessablauf nach der Probenaufnahme, wobei die Cartridge Strukturen zur Aufnahme der Trockenreagenzien aufweist und diesen Strukturen Mittel zur Durchführung sowohl des Zellaufschlusses einerseits und der PCR andererseits, aber auch der elektrochemischen Detektion zugeordnet sind. Insbesondere haben dabei die Kanäle unterschiedliche, problemangepasste Strukturen. Speziell der Aufschlusskanal hat vorteilhafterweise gestufte Querschnitt zur optimalen Benetzung mit dem Trockenreagenz, während die PCR-Kammer und die Elisa-Reagenzkanäle töpfchenförmige Vertiefungen aufweisen.In contrast, the subject of the invention is such a disposable cartridge with a system of microchannels and / or microcavities for a given process flow after sample taking, the cartridge has structures for receiving the dry reagents and these structures means for performing both the cell disruption on the one hand and the PCR on the other , but also associated with electrochemical detection. In particular, the channels have different, problem-adapted structures. Especially the digestion channel advantageously has stepped cross-section for optimal wetting with the dry reagent, while the PCR chamber and Elisa reagent channels have well-shaped wells.
Es kann somit erreicht werden, dass in einem Verfahrensablauf die Zuführung und Aufbereitung der Probe, die DNA-Amplifikation und die eigentliche Detektion der DNA möglich ist.It can thus be achieved that in a procedure the supply and preparation of the sample, the DNA amplification and the actual detection of the DNA is possible.
Durch das erfindungsgemäße System der geometrischen Strukturen in den Mikrokanälen bzw. Mikrokavitäten zur Aufnahme von Trockenreagenzien ergeben sich geeignete Randbedingungen für die DNA-Analyse einerseits und die Protein-Analyse andererseits. Folgende Merkmale und Maßnahmen sind wesentlich:
- Die im Mikrokanal bzw. in der Mikrokavität eingebrachten Reagenzien sind trockenbare Substanzen mit vernachlässigbarem Dampfdruck. Durch die bei Raumtemperatur stabilen Substanzen bleiben deren Eigenschaften für Zellaufschluss und/oder PCR und/oder Detektion erhalten. Dabei können Gemische aus den Substanzen mit Hilfsstoffen Dünnfilme bilden und können die Gemische mit dünnen Paraffinschichten wasserdicht abgedeckt sein.
- The reagents incorporated in the microchannel or in the microcavity are dryable substances with negligible vapor pressure. The substances which are stable at room temperature retain their properties for cell disruption and / or PCR and / or detection. In this case, mixtures of the substances with auxiliary substances can form thin films and the mixtures can be covered with thin paraffin layers in a watertight manner.
Bei der Erfindung werden die Reagenzien und Hilfsstoffe bereits bei der Herstellung der Cartridge als Trockensubstanzen in Vertiefungen der Cartridgekanäle4 eingebracht. Daraus ergeben sich folgende Vorteile:
- einfache und präzise Applikation der Reagenzien bei der Herstellung der Cartridge
- Schutz der Reagenzien beim Befüllen der Reagenzkanäle, d.h. die Reagenzien werden durch einen sog. Wasserflow nicht weggespült, sondern bleiben beim Füllen des gesamten Kanals erhalten. Erst nach dem Befüllen des Kanals lösen sich die Reagenz-Spots über Diffusionsvorgänge auf und es entsteht eine homogene Reagenzlösung.
- simple and precise application of the reagents during the production of the cartridge
- Protection of the reagents during filling of the reagent channels, ie the reagents are not washed away by a so-called water flow, but are retained when filling the entire channel. Only after filling the channel, the reagent spots dissolve via diffusion processes and there is a homogeneous reagent solution.
In einer weiteren besonderen Ausführungsform sind die Vertiefungen in vordefinierten Abständen entlang des Reagenzkanals lokalisiert. Dabei können die Abstände äquidistant sein oder besonders vorteilhaft in variablen Abstandsmustern angeordnet sein.In another particular embodiment, the wells are located at predefined intervals along the reagent channel. The distances can be equidistant or be arranged particularly advantageous in variable spacing patterns.
Die Vertiefungen können vorteilhafterweise mit variablen Trockenreagenzmengen befüllt sein. Durch die Kombination von verschiedenen Trockenreagenzmengen und Abstandsmustern der Vertiefungen können die gewünschten Konzentrationsprofile der fertigen Reagenzlösungen eingestellt werden.The depressions may advantageously be filled with variable amounts of dry reagent. Through the combination of different dry reagent quantities and well spacing patterns, the desired concentration profiles of the final reagent solutions can be adjusted.
Für bestimmte Funktionen wie z.B. Zellaufschluss in Gegenwart von Magnet-Beads und Lyse-Reagenzien ist eine gleichmäßige Verteilung der unlöslichen Komponenten, d.h. der Beads, im Trockenreagenz erforderlich. Dazu werden die Magnet-Beads als Suspension in den Lyse-Kanal dispensiert. Beim Verdampfen des Lösungsmittels wird beobachtet, dass sich die Beads in die Randbereiche des Lyse-Kanals zurückziehen und eine gleichmä-βige Verteilung dadurch nicht gegeben ist. Durch stufenartige Strukturierung des Lyse-Kanal-Querschnittes verteilen sich die Magnet-Beads über die Stufen und eine gleichmäßige Verteilung wird erreicht.For certain functions, such as Cell disruption in the presence of magnetic beads and lysis reagents is a uniform distribution of the insoluble components, i. of the beads, in dry reagent required. For this purpose, the magnetic beads are dispensed as a suspension in the lysis channel. Upon evaporation of the solvent, it is observed that the beads retreat into the peripheral areas of the lysis channel and thus an even distribution is not present. By stepwise structuring of the lysis channel cross-section, the magnetic beads spread over the steps and a uniform distribution is achieved.
Damit mit der erfindungsgemäßen Cartridge gleichermaßen ein Zellaufschluss, eine PCR und ein so genannter DNA-/Protein-ELISA-Test durchgeführt werden kann, ist es vorteilhaft, dass in den Mikrokanälen bzw. Mikrokavitäten Substrate mit DNA-bindenden Eigenschaften, insbesondere die DNA-bindenden Magnet-Beads, vorhanden sind. Dabei können die Lyse-Reagenzien und die Magnet-Beads zusammen in einer einzigen Trockenmatrix enthalten sein. Weiterhin sind in der Karte auch die Reagenzien für einen ELISA-Assay vorhanden. Im Einzelnen werden für das ELISA-Assay zwei Reagenzien benötigt, d.h. als erstes Reagenz ein Label-Enzym und als zweites Reagenz ein Enzym-Substrat.In order that cell disintegration, PCR and a so-called DNA / protein ELISA test can be carried out in the same way with the cartridge according to the invention, it is advantageous that substrates with DNA-binding properties, in particular the DNA-binding properties, are present in the microchannels or microcavities Magnetic beads are present. The lysis reagents and the magnetic beads may be contained together in a single dry matrix. Furthermore, the reagents for an ELISA assay are also present in the card. Specifically, two reagents are required for the ELISA assay, i. the first reagent is a label enzyme and the second reagent is an enzyme substrate.
Insbesondere ist in der Cartridge ein Detektionsmodul zur elektrischen Detektion der Hybridisierungsvorgänge angeordnet. Das Detektionsmodul besteht vorteilhafterweise aus einem Edelmetall/Plastik-Verbund oder einem halbleiterprozessierten Siliziumchip mit Edelmetallelektroden. Für eine elektrische Detektion geeignet sind dabei insbesondere elektrochemische, magnetische oder piezoelektrische Messverfahren.In particular, a detection module for the electrical detection of the hybridization processes is arranged in the cartridge. The detection module advantageously consists of a precious metal / plastic composite or a semiconductor-processed Silicon chip with precious metal electrodes. In particular, electrochemical, magnetic or piezoelectric measuring methods are suitable for electrical detection.
Zur Anwendung der Erfindung der erfindungsgemäßen Cartridge ist insbesondere ein Eingabeport für eine Vollblutprobe vorhanden. Weiterhin sind Mittel zur Zufuhr von Wasser vorhanden, beispielsweise Zufluss-Ports zum Anschluss an eine externe Wasserzufuhr oder ein integriertes Wasserreservoir. In den Mikrokanälen bzw. Mikrokavitäten haben trockene Puffersubstanzen definierte Ionenstärke nach der Wasserzufuhr.In particular, an input port for a whole blood sample is available for use of the invention of the cartridge according to the invention. Furthermore, there are means for supplying water, for example inflow ports for connection to an external water supply or an integrated water reservoir. In the microchannels or microcavities dry buffer substances have defined ionic strength after the water supply.
Bei Anwendung der Erfindung zur Analytik von weißen Blutzellen aus Vollblut sind vorteilhafterweise Mittel zum Mischen einer Vollblutprobe mit Wasser bzw. einer Pufferlösung vorhanden. Dabei sind Mittel zum Durchströmen des mit Lyse-/Bead/Reagenz beschichteten Mikrokanals bzw. Mikrokavität mit Blut bzw. Blut/Wasser- oder Blut/Puffer-Gemische vorhanden.When applying the invention for the analysis of white blood cells from whole blood means are advantageously present for mixing a whole blood sample with water or a buffer solution. In this case, means for flowing through the lysis / bead / reagent coated microchannel or microcavity with blood or blood / water or blood / buffer mixtures are present.
Für die in der erfindungsgemäßen Cartridge bei Anwendung speziell zur DNA-Analyse durchzuführende PCR sind weiterhin Mittel zum Generieren eines Magnetfeldes zum Fixieren des DNA-/Magnetbead-Komplexes in einer PCR-Kavität vorhanden. Für diesen Zweck muss die PCR-Kavität geeignet verschlossen werden können und müssen Mittel zur Thermozyklisierung vorhanden sein.For the PCR to be carried out in the cartridge according to the invention, especially for DNA analysis, there are also means for generating a magnetic field for fixing the DNA / magnetic bead complex in a PCR cavity. For this purpose, the PCR cavity must be suitably sealed and must have means for thermal cycling.
Schließlich ist es bei der erfindungsgemäßen Cartridge wesentlich, dass Mittel zum Lagern von verbrauchtem Probenmaterial und verbrauchten Reagenzien vorhanden sind, die Abfall-Reservoirs bilden. Dabei müssen die Mittel zur keimdichten, zell- bzw. partikelfreien Entlüftung von mindestens einem Abfallreservoir geeignet sein. Zum Auslesen der Cartridge in einem Auslesegerät, das nicht Gegenstand der Erfindung ist, müssen schließlich Mittel zur Fixierung der Cartridge vorhanden sein.Finally, with the cartridge of the present invention, it is essential that there are means for storing spent sample material and spent reagents that form waste reservoirs. In this case, the means for germ-proof, cell or particle-free ventilation of at least one waste reservoir must be suitable. To read the cartridge in a reading device, which is not the subject of the invention, finally, means for fixing the cartridge must be present.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Figurenbeschreibung von Ausführungsbeispielen anhand der Zeichnung in Verbindung mit den Patentansprüchen. Es zeigen in jeweils schematischer Darstellung
- Figur 1
- eine Cartridge mit einer Übersicht über einzelne Mikrokanal-/ Kavitäten-Systeme mit den zugehörigen Funktionsbezeichnungen,
- Figur 2
- die Draufsicht auf einen Zellaufschlusskanal,
- Figur 3
- den Querschnitt durch den Zellaufschlusskanal gemäß
Figur 5 , - Figur 4
- zwei Alternativen des Durchflusskanalquerschnittes in vergrößerter Darstellung,
- Figur 5
- die Draufsicht auf die PCR-Kammer in
Figur 1 , - Figuren 6
- und 7 den Querschnitt durch die PCR-Kammer gemäß
Figur 5 , - Figur 8
- die Draufsicht auf einen ELISA-Reagenzkanal in Figur 1,
- Figuren 9, 10
- den Querschnitt des ELISA-Reagenzkanals gemäß
Figur 8 sowie die - Figuren 11 bis 23
- die Draufsicht auf die Cartridge gemäß Figur 1 in verschiedenen Verfahrenszuständen während einer automatisierten Auswertung.
- FIG. 1
- a cartridge with an overview of individual microchannel / cavity systems with the associated function names,
- FIG. 2
- the top view of a cell disruption channel,
- FIG. 3
- the cross section through the Zellaufschlusskanal according to
FIG. 5 . - FIG. 4
- two alternatives of the flow channel cross-section in an enlarged view,
- FIG. 5
- the top view of the PCR chamber in
FIG. 1 . - FIGS. 6
- and Figure 7 shows the cross-section through the PCR chamber according to
FIG. 5 . - FIG. 8
- the top view of an ELISA reagent channel in Figure 1,
- FIGS. 9, 10
- the cross-section of the ELISA reagent channel according to
FIG. 8 as well as the - FIGS. 11 to 23
- the top view of the cartridge of Figure 1 in various process states during an automated evaluation.
In den Figuren haben gleiche bzw. gleichwirkende Elemente gleiche Bezugszeichen. Insbesondere die
In
Aus der Draufsicht gemäß
Aus
Wie erwähnt hat die Cartridge 100 insbesondere einen EingabePort 102 für eine Vollblutprobe. Dazu sind Mittel zur Zufuhr von Wasser vorhanden. Es kann ein Zuflussport zum Anschluss an eine externe Wasserzufuhr vorhanden sein oder der Zuflussport kann an ein integriertes Wasser-Reservoir angeschlossen werden.In particular, as mentioned, the
Die Mikrokanäle bzw. Mikrokavitäten 101 bis 131 sind im Normalfall mit trockenen Puffersubstanzen gefüllt, die eine definierte Ionenstärke nach Wasserzufuhr gewährleisten. Für die Blutanalyse sind Mittel zum Mischen von Vollblutprobe und Wasser bzw. der Pufferlösung und/oder Mittel zum Durchströmen eines mit einem Lyse-Bead-Reagenz beschichteten Mikrokanals bzw. der Mikrokavität mit Blut oder mit Blut-Wasser- bzw. Blut-Puffer-Gemisch vorhanden.The microchannels or
Im Kanalsystem sind weite Bereich 106, 107, 108, 109 als Reservoirs für die Aufnahme von Abfall ("Waste") vorgesehen. Daneben ist ein Bereich mit Kanälen 131 bzw. 131' für die Aufnahme unterschiedlicher ELISA-Reagenzien vorhanden.In the channel system,
In den
Speziell in der Darstellung gemäß der
In den
Die sachgerechte Durchführung der PCR mit ventilgesteuerter Thermozyklisierung innerhalb einer Cartridge wird im Einzelnen in den parallelen Anmeldungen
Aus den
In den
Die Auswertung wird nachfolgend anhand elf konkreter Verfahrens-Teilschritte a) bis m) verdeutlicht, nachdem die Cartridge in ein Auswertegerät mit Mitteln zur Aufnahme der Cartridge eingeschoben und das Auswertegerät bei darin fixierter Cartridge aktiviert ist. Unter Bezugnahme auf
- a) Es wird ca. 10 µl Blut als Messprobe eingefüllt. Über die
Dosierkapillare 105 wird 1 µl automatisch dosiert. - b) Das überschüssige Blut wird in den Leerraum 106 (Waste 1) gewaschen.
- c) Anschließend werden 1 µl Blutprobe mit Wasser verdünnt und in
den Zellaufschlusskanal 110 transferiert. Dort finden der Zellaufschluss (Lyse) der Blutzellen sowie das Binden der freigesetzten DNA an die Magnet-Beads statt. - d) Anschließend werden die Magnet-Beads in die PCR-Kammer transferiert und dort gesammelt. Es findet ein Waschvorgang statt, wobei die Waschlösung im Leerraum 107 (Waste 2) gesammelt wird.
- e) Nunmehr ist der Waschvorgang abgeschlossen.
- f) Anschließend werden die PCR-
Kammerventile 122, 122' geschlossen und die PCR durchgeführt. - g) Während der PCR wird gleichermaßen der ELISA-
Reagenzkanal 131, der das Enzymsubstrat enthält, mit Wasser gefüllt. - h) Gleichermaßen wird während der PCR der ELISA-Reagenz kanal 131', der das Label-Enzym enthält, mit Wasser gefüllt.
- i) Nach der PCR werden die PCR-
Kammerventile 122, 122' geöffnet und das PCR-Produkt wird über das Detektionsmodul 130 (in den Waste 3, Kanal 108) geleitet, wo die Hybridisierung mit den spezifischen Fängersonden erfolgt. - j) Der Enzym-Substrat-Kanal wird in den Abfallkanal 108 (Waste 3) entlüftet.
- k) Der Label-Enzym-Kanal wird in den Abfallkanal 108 (Waste 3) entlüftet.
- l) Die Label-Enzym-Lösung fließt über
das Detektionsmodul 130 zum Labeln in den Abfallbereich 109 (Waste 4). - m) Die Enzym-Substrat-Lösung fließt über
das Detektionsmodul 130 zur enzymatisch-elektrochemischen Detektion der Hybridisierung in den Abfallbereich 109 (Waste 4).
- a) About 10 μl of blood is added as a test sample. 1 μl is dosed automatically via the
dosing capillary 105. - b) The excess blood is washed into the void 106 (Waste 1).
- c) Subsequently, 1 μl of blood sample is diluted with water and transferred into the
cell disruption channel 110. There, the cell disruption (lysis) of the blood cells and the binding of the liberated DNA to the magnetic beads take place. - d) Subsequently, the magnetic beads are transferred to the PCR chamber and collected there. There is a washing process, wherein the washing solution in the void 107 (Waste 2) is collected.
- e) Now the washing process is completed.
- f) Subsequently, the
PCR chamber valves 122, 122 'are closed and the PCR is performed. - g) Similarly, during the PCR, the
ELISA reagent channel 131 containing the enzyme substrate is filled with water. - h) Similarly, during the PCR, the ELISA reagent channel 131 'containing the label enzyme is filled with water.
- i) After the PCR, the
PCR chamber valves 122, 122 'are opened and the PCR product is passed over the detection module 130 (into the waste 3, channel 108) where hybridization with the specific capture probes occurs. - j) The enzyme-substrate channel is vented into the waste channel 108 (waste 3).
- k) The label enzyme channel is vented to waste channel 108 (waste 3).
- l) The label enzyme solution flows into the waste area 109 (waste 4) via the
labeling detection module 130. - m) The enzyme-substrate solution flows via the
detection module 130 for enzymatic-electrochemical detection of the hybridization in the waste area 109 (Waste 4).
Damit ist das Analyseverfahren abgeschlossen. Insbesondere bei einer elektrochemischen Detektion können die anfallenden Signale elektrisch ausgelesen und prozessorgestützt gemäß vorgegebenem Programm ausgewertet werden.This concludes the analysis process. In particular, in an electrochemical detection, the resulting signals can be read out electrically and processor-based evaluated according to a predetermined program.
Die anhand der
Es ist auch möglich, dass auf den offenen Kartengrundkörper 101 vor dem abdeckseitigen Abschluss und Fertigstellung der Cartridge bestimme Sondereinrichtungen, beispielsweise als Dichtungsmaterialien und/oder Entlüftungsmaterialien, aufgebracht werden.It is also possible that on the
Das konkrete Messverfahren wurde anhand der
Abschließend wird speziell für die DNA-Analyse nochmals das integrierte Betriebsverfahren der oben im Einzelnen beschriebenen Cartridge als Kombination bzw. in der Abfolge der einzelnen Teilschritte zusammengefasst:
- Aufgeben der Probe in Cartridge
- Einschieben der Cartridge in Auslesegerät,
- Starten des vollautomatischen Assays
- Proben-Dosierung über Dosierstrecke
- Waschen der Dosierstrecke
- Verdünnen der Probe und Einbringen in Lyse-Kanal
- Verweilen im Lyse-Kanal
- Sammeln des DNA-Bead-Komplexes durch Beadsammler in der PCR-Kammer
- Waschen des DNA-Bead-Komplexes mit Wasser
- Verschließen der PCR-Kammer
- Durchführung der PCR
- Während der PCR: Füllen der beiden ELISA-Reagenzkanäle mit Wasser
- Öffnen der PCR-kammer
- Transport des PCR-Produkts in Detektionskammer
- Hybridisierung in der Detektionskammer
- Entlüften der beiden ELISA-Reagenzkanäle
- Füllen und Spülen der Detektionskammer mit ELISA Reagenz 1
- Füllen und Spülen der Detektionskammer mit ELISA-Reagenz 2
- Durchführung der elektrochemischen Messungen.
- Place the sample in cartridge
- Inserting the cartridge into the reader,
- Start the fully automatic assay
- Sample dosing via dosing line
- Washing the dosing section
- Dilute the sample and place in lysis channel
- Linger in the lysis channel
- Collect the DNA Bead complex by bead collectors in the PCR chamber
- Wash the DNA bead complex with water
- Close the PCR chamber
- Execution of the PCR
- During the PCR: Fill the two ELISA reagent channels with water
- Open the PCR chamber
- Transport of the PCR product in detection chamber
- Hybridization in the detection chamber
- Vent the two ELISA reagent channels
- Fill and rinse the detection chamber with ELISA reagent 1
- Fill and rinse the detection chamber with ELISA reagent 2
- Carrying out the electrochemical measurements.
Bei den elektrochemischen Messungen erfolgt zunächst das Durchspülen der Detektionskammer mit einer ein Enzymlabel tragenden Antikörperlösung (ELISA-Reagenz 1). Dann erfolgt das Durchspülen der Detektionskammer mit Enzymsubstrat (ELISA-Reagenz 2). Die elektrochemischen Messungen werden in an sich bekannter Weise bei vorgebbaren, unterschiedlichen Temperaturen und änderbarer Fließgeschwindigkeiten der Enzym-substrat-Lösung durchgeführt.In electrochemical measurements, the detection chamber is first flushed with an antibody solution carrying an enzyme label (ELISA reagent 1). Then, the rinsing of the detection chamber with enzyme substrate (ELISA reagent 2). The electrochemical measurements are carried out in a manner known per se at predeterminable, different temperatures and changeable flow rates of the enzyme-substrate solution.
Für die Protein-Analyse werden entsprechende Vorgehensweisen angewandt, wobei in diesem Fall die PCR nicht zum Tragen kommt.For protein analysis, appropriate procedures are used, in which case the PCR does not apply.
Claims (43)
- Arrangement for the integrated and automated DNA or protein analysis of a measurement sample in a single-use cartridge (card) filled with dried reagents, with the following features for the automatic performance in the cartridge of all measures necessary for the process analysis made up of individual component processes:- in the cartridge (100) a system of microchannels and/or of microcavities (101 to 131) for microfluidic process technology is present;- the microchannels or the microcavities (101 to 131) have predefined depressions to accommodate reagents, wherein- the reagents are stored ready in a storage-stable form at defined sites in the microchannels or the microcavities (101 to 131) of the cartridge (100);- means are present for making the dry-stored reagents available for the relevant component process in suitable form, in particular as a liquid reagent.
- Arrangement according to Claim 1, characterized in that the depressions have at least one step with step heights of 10 to 500 µm.
- Arrangement according to Claim 1, characterized in that the depressions have a length of ca. 1 mm and a depth of about 100 µm.
- Arrangement according to Claim 2, characterized in that the depressions are cylindrical, wherein the length represents the diameter.
- Arrangement according to one of the previous claims, characterized in that the reagents introduced into the micro-channels or into the microcavities (101 to 131) have the following properties:- they are dryable substances with negligible vapor pressure, which are stable at room temperature, so that the properties remain unchanged for one cell disintegration or one PCR or for the detection of biochemical quantities.
- Arrangement according to Claim 5, characterized in that mixtures of the particular substance with additives form thin films which adhere to the walls.
- Arrangement according to Claim 6, characterized in that the substances or mixtures introduced into parts of the micro-channels or microcavities (101 to 131) are watertightly covered with thin paraffin wax layers.
- Arrangement according to one of the previous Claims 5-7, characterized in that the substances introduced into parts of the microchannels or microcavities (101 to 131) have DNA- or protein-binding properties.
- Arrangement according to one of the previous Claims 5-8, characterized in that the substances introduced into parts of the microchannels or microcavities (101 to 131) are magnetic beads with specific binding properties.
- Arrangement according to Claim 9, characterized in that the magnetic beads are coated with antibodies.
- Arrangement according to Claim 9, characterized in that the magnetic beads are coated with DNA-binding substances.
- Arrangement according to one of the previous Claims 9-11, wherein lysis reagents and magnetic beads are simultaneously present, characterized in that the lysis reagents and the magnetic beads are contained in a single dry matrix.
- Arrangement according to one of the previous claims, characterized in that a so-called DNA ELISA assay or protein ELISA assay (130, 131) can be performed, wherein a label enzyme (reagent 1) and an enzyme substrate (reagent 2) are present as reagents for the ELISA assay (130, 131).
- Arrangement according to one of the previous claims, characterized in that a detection module (130) for the electrical detection of the hybridization processes is present.
- Arrangement according to Claim 14, characterized in that the detection module (130) consists of a noble metal/plastic composite.
- Arrangement according to Claim 14, characterized in that the detection module consists of a semiconductor-processed silicon chip with noble metal electrodes.
- Arrangement according to Claim 14, characterized in that electrochemical, magnetic and/or piezoelectric measurement methods are used as means for the electrical detection.
- Arrangement according to one of the previous claims, characterized in that the cartridge (100) has an input port (102) for a whole blood sample.
- Arrangement according to one of the previous claims, characterized in that means (103 to 103"') for the introduction of water, in particular an inlet port, is present.
- Arrangement according to claim 19, characterized in that an inlet port for connection to an external water source is present.
- Arrangement according to Claim 19, characterized in that the inlet port is connected to an integrated water reservoir.
- Arrangement according to one of the previous claims, characterized in that the microchannels or microcavities (101 to 131) are filled with dry buffer substances of defined ionic strength after addition of water.
- Arrangement according to one of the previous claims, characterized in that means for the mixing of whole blood samples and water or the buffer solution are present.
- Arrangement according to one of the previous claims, characterized in that means for passing blood or blood-water or blood-buffer mixture through the microchannel or microcavity coated with lysis bead reagent are present.
- Arrangement according to one of the previous claims, characterized in that means for generating a magnetic field for the purpose of immobilizing the DNA/magnetic bead or protein/ magnetic bead complex are present.
- Arrangement according to one of the previous claims, characterized in that means for generating a magnetic field for the purpose of immobilizing the DNA/magnetic bead complex in a PCR cavity are present.
- Arrangement according to Claim 26, characterized in that means for closure of the PCR cavity are present.
- Arrangement according to one of the previous claims, characterized in that means for the thermocycling of the sample are present.
- Arrangement according to one of the previous claims, characterized in that in the cartridge (card) means for the storage of used sample material and/or used reagents are present.
- Arrangement according to claim 29, characterized in that the means for the storage of used sample material and/or used reagents constitute waste reservoirs.
- Arrangement according to Claim 30, characterized in that means for the germproof, particle- or cell-free venting of the waste reservoirs are present.
- Arrangement according to one of the previous claims, characterized in that means for the immobilization of the cartridge in a reading device are present.
- Method for the production of a cartridge used in the arrangement according to Claim 1 or one of Claims 2 to 32, with the following process steps:- a cartridge base with channels and/or cavities is made from polymer,- reagents are spotted into the open channels, which comprise geometric structures in the form of depressions, and dried there,- the channels and/or cavities are closed with a film.
- Production method according to Claim 33, characterized in that the card base is produced by injection molding technology.
- Production method according to Claim 33, characterized in that special materials, such as for example sealing membranes, venting membranes or the like are applied onto the card body.
- Production method according to Claim 33, characterized in that, before the sealing of the card body, a detection module with measurement devices is introduced, in particular glued in.
- Operating method for DNA analysis in an arrangement according to Claim 1 or in one of Claims 2 to 32, with the following measures:- introduction of the sample into the cartridge,- insertion of the cartridge into a reading device,- starting of the fully automatic assay.
- Operating method according to Claim 37, with the following steps during operation of the fully automatic assay:- sample dispensing takes place via a dispensing section,- the dispensing section is washed,- the measurement sample is diluted and introduced into the lysis channel,- by residence in the lysis channel, a cell disintegration takes place,- the DNA-bead complex formed is carried into the PCR chamber by a liquid flow and held in the PCR chamber by means of a bead collector,- a washing of the DNA-bead complex with water takes place,- the PCR chamber is closed,- the PCR is performed,- after completion of the PCR, the PCR product is transported into the detection chamber,- hybridization processes with specific capture probes take place in the detection chamber,- the flushing of the detection chamber with labeling enzyme takes place,- the flushing of the detection chamber with enzyme substrate takes place,- the electrochemical measurements are performed,- the electrochemical measurements are performed at various temperatures and various flow rates of the enzyme-substrate solution.
- Operating method according to Claim 38, characterized in that during the PCR the ELISA reagent channels are filled with water.
- Operating method according to Claim 38, characterized in that after the hybridization both ELISA channels are vented, that next the detection chamber is firstly flushed gas bubble-free with the first ELISA reagent and then flushed gas bubble-free with the second ELISA reagent, and that the electrochemical measurement is then performed.
- Operating method for protein analysis in an arrangement according to Claim 1 or in one of Claims 2 to 32, with the following measures:- introduction of the sample into the cartridge,- insertion of the cartridge into a reading device,- starting of the fully automatic assay.
- Operating method according to Claim 41, with the following steps during operation of the fully automatic assay:- sample dispensing takes place via a dispensing section,- the dispensing section is washed,- the measurement sample is diluted and transported into the detection chamber by a liquid flow,- binding processes between the proteins of the measurement sample and specific capture antibodies or capture proteins take place in the detection chamber,- the flushing of the detection chamber with an antibody solution bearing an enzyme label (ELISA reagent 1) takes place,- the flushing of the detection chamber with enzyme substrate (ELISA reagent 2) takes place,- the electrochemical measurements are performed.
- Operating method according to Claim 42, characterized in that after the hybridization both ELISA channels are vented, that next the detection chamber is firstly flushed gas bubble-free with the first ELISA reagent and then flushed gas bubble-free with the second ELISA reagent, and that the electrochemical measurement is then performed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004050576 | 2004-10-15 | ||
PCT/EP2005/055303 WO2006042838A1 (en) | 2004-10-15 | 2005-10-17 | Arrangement for integrated and automated dna or protein analysis in a single-use cartridge, method for producing such a cartridge and operating method for dna or protein analysis using such a cartridge |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1807208A1 EP1807208A1 (en) | 2007-07-18 |
EP1807208B1 true EP1807208B1 (en) | 2013-03-20 |
Family
ID=35432485
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05801513A Active EP1807208B1 (en) | 2004-10-15 | 2005-10-17 | Arrangement for integrated and automated dna or protein analysis in a single-use cartridge, method for producing such a cartridge and operating method for dna or protein analysis using such a cartridge |
EP05803183.2A Active EP1796838B1 (en) | 2004-10-15 | 2005-10-17 | Method for carrying out an electrochemical measurement on a liquid measuring sample in a measuring chamber that can be accessed by lines |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP05803183.2A Active EP1796838B1 (en) | 2004-10-15 | 2005-10-17 | Method for carrying out an electrochemical measurement on a liquid measuring sample in a measuring chamber that can be accessed by lines |
Country Status (5)
Country | Link |
---|---|
US (2) | US20090130658A1 (en) |
EP (2) | EP1807208B1 (en) |
JP (1) | JP4546534B2 (en) |
CN (2) | CN101039751B (en) |
WO (2) | WO2006042734A1 (en) |
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2005
- 2005-10-17 EP EP05801513A patent/EP1807208B1/en active Active
- 2005-10-17 JP JP2007536193A patent/JP4546534B2/en not_active Expired - Fee Related
- 2005-10-17 WO PCT/EP2005/011156 patent/WO2006042734A1/en active Application Filing
- 2005-10-17 CN CN2005800352245A patent/CN101039751B/en not_active Expired - Fee Related
- 2005-10-17 US US11/665,380 patent/US20090130658A1/en not_active Abandoned
- 2005-10-17 CN CNB2005800352122A patent/CN100534619C/en not_active Expired - Fee Related
- 2005-10-17 EP EP05803183.2A patent/EP1796838B1/en active Active
- 2005-10-17 US US11/665,331 patent/US7851227B2/en active Active
- 2005-10-17 WO PCT/EP2005/055303 patent/WO2006042838A1/en active Application Filing
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US7851227B2 (en) | 2010-12-14 |
JP2008517259A (en) | 2008-05-22 |
EP1807208A1 (en) | 2007-07-18 |
CN101039750A (en) | 2007-09-19 |
JP4546534B2 (en) | 2010-09-15 |
US20090130658A1 (en) | 2009-05-21 |
CN101039751B (en) | 2010-05-05 |
CN101039751A (en) | 2007-09-19 |
CN100534619C (en) | 2009-09-02 |
WO2006042838A1 (en) | 2006-04-27 |
US20090136922A1 (en) | 2009-05-28 |
EP1796838B1 (en) | 2014-10-08 |
EP1796838A1 (en) | 2007-06-20 |
WO2006042734A1 (en) | 2006-04-27 |
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