WO2005033261A2 - Verfahren und versorgungseinheit zur überwachung von veränderungen und zuständen in reaktionskammern - Google Patents
Verfahren und versorgungseinheit zur überwachung von veränderungen und zuständen in reaktionskammern Download PDFInfo
- Publication number
- WO2005033261A2 WO2005033261A2 PCT/EP2004/052405 EP2004052405W WO2005033261A2 WO 2005033261 A2 WO2005033261 A2 WO 2005033261A2 EP 2004052405 W EP2004052405 W EP 2004052405W WO 2005033261 A2 WO2005033261 A2 WO 2005033261A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- supply unit
- passage channel
- reaction
- reaction space
- Prior art date
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
-
- 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
- B01L2200/0684—Venting, avoiding backpressure, avoid gas bubbles
-
- 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
- B01L2300/04—Closures and closing means
- B01L2300/046—Function or devices integrated in the closure
-
- 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
- B01L2300/04—Closures and closing means
- B01L2300/046—Function or devices integrated in the closure
- B01L2300/048—Function or devices integrated in the closure enabling gas exchange, e.g. vents
Definitions
- reaction chambers Investigations on cell cultures are carried out in reaction chambers. Cells, cell components, MNA, RNA, enzymes, antibodies and chemical compounds can be monitored and / or reacted in the reaction space. Reaction chambers are known in which sensor systems of different types are located on the bottom of the reaction space.
- the invention relates to a method for monitoring changes and conditions in reaction chambers and a supply unit, which is required for investigations on cell cultures for the introduction of a liquid culture medium.
- Known devices are used to supply the cells with fresh culture medium or an active ingredient dissolved in this culture medium or to remove used medium from the cell culture area in a certain time sequence.
- the medium supplied and the cell culture area must be protected against contamination by microorganisms and against excessive evaporation. These are important prerequisites for the sensitive measurement of cellular reactions.
- DE 19920811 describes a device for carrying out tests on cell cultures which are in a liquid culture medium.
- a separating body is provided which is approachable to the cell culture located on a receptacle and delimits a reaction space on the upper side of the culture medium.
- One or more passage channels are provided within the separating body, which lead into the small-volume subspace of the receptacle.
- the convective mixing of the medium located in the reaction chamber and in the reservoir space is carried out by supplying a certain liquid quantity of culture medium to the reaction space and sucking it off again via the pressure passage channel.
- the convective mixing takes place via the flow channel between the separating body and the receptacle.
- On the underside of the separating body there is a profile with a convex curvature, which allows air or gas bubbles to escape.
- Liquids can store or release gases depending on the ambient conditions (gas exchange with the environment), the saturation state always being sought. Depending on the temperature and pressure, this can lead to considerable gas deposits. When relaxation and temperature increase some of the gas is released back into the environment, which can lead to the formation of bubbles. In closed systems, these bubbles can be transported and lead to disturbances in chemical, physical and biological processes, measurement results or the measurement environment (e.g. damage to the cell carpet or within a reaction space, prevention of chemical reactions on surfaces due to the formation of air bubbles).
- a disadvantage of the prior art is that gas bubbles can arise which impair the cell culture or the measurement by the sensors.
- Some of these systems can partially or almost completely degas the liquid.
- care must be taken here that gas cannot be taken up again when the liquids are transported onwards (gas-impermeable transport containers / pipes / hoses).
- degassing can change the properties of the liquid (e.g. denaturing proteins by heating) or affect the sensors.
- the described degassing processes are not suitable for applications based on semi-open systems, working with living (e.g. oxygen-consuming) cells and / or which do not allow any manipulation of the liquid.
- the object of the invention is to enable an air bubble-free measurement in reaction chambers for monitoring changes and conditions in reaction chambers. Degassing should be avoided entirely.
- the method for monitoring changes and states in reactive On chambers is characterized in that a fluid is drawn off or pumped out of a storage container and transported to a supply unit.
- the fluid drips or flows via a second passage channel (inlet channel) into a drip chamber, so that air bubbles that are transported with the fluid remain at the fluid boundary or immediately escape into the environment. You can therefore not get into the reaction space.
- the fluid forms a supply above a head and a reaction space.
- the height of the fluid limit and thus the storage volume is determined with the aid of a first passage channel (suction channel) and a fluid exchange takes place in the reaction space through the suction via the suction channel and the consequent flow of the fluid out of the drip room.
- the height of the fluid limit and thus the storage volume is determined with the aid of a third passage channel (emergency suction channel).
- the change in the fluid or a surface in the reaction space is triggered by living cells and / or chemical, biochemical and / or immunological reactions, the fluid supply and disposal taking place simultaneously or in succession.
- the reaction space can be changed by a lifting mechanism of the head support.
- the fluid in the drip chamber is thereby mixed with the fluid in the reaction chamber.
- the liquid in the drip chamber is drawn into the reaction chamber (by sucking the liquid out of the reaction chamber).
- a membrane is arranged in the reaction space in such a way that parts of the reaction space are excluded from a direct flow through the fluid.
- a first passage channel opening into the reaction space serves as a suction device for a fluid.
- the fluid is admitted via a second passage channel above the fluid limit.
- Sensor systems for detecting the change in the fluid are arranged in the reaction space and or in the first passage.
- the head carrier consists of a head with a shaft-shaped shaft and a thickening for receiving the second passage channel.
- a further embodiment shows that the second passage channel for the supply of the fluid is arranged next to the head carrier.
- the first passage is in the bottom of the reaction space.
- the surface of the supply unit is covered with a hydrophobic and / or hy- provided with a hydrophilic coating.
- a head carrier 1 which delimits the reaction space 2 is located in a receiving container 10.
- Cells, cell components, DNA, RNA, enzymes, antibodies and chemical compounds can be monitored and / or reacted in the reaction space 2.
- Sensor systems 13 of different types can be located on the bottom of the reaction space 2 and / or in the first passage 5. This can e.g. electrical, optical and / or acoustic sensors.
- a membrane 14 in the reaction space 2 can e.g. Restrain suspension cells or other movable reaction components in the reaction space 2 or prevent a direct inflow (shear forces) of adherently growing cells or reaction components on surfaces.
- FIG. 2 shows how overflow can be prevented by the head support 1 according to the invention with the first passage 5 as the suction, the second passage 6 as the inlet and the third passage 11 as the emergency suction.
- the head support 1 has a head 7 with an adjoining stem-shaped shaft 8.
- a first passage 5 opening into the reaction chamber 2 serves as a suction device for a fluid 3.
- the inlet takes place via a second passage 6 into a drip chamber above the fluid boundary 4.
- This second passage channel 6 is located in a thickened portion 9, for example, tapered in the shape of a stem to the stem-shaped shaft 8. This arrangement makes it possible for no undesired bubbles or gases to arise in the reaction space 2.
- a certain quantity of liquid of culture medium is supplied to the already existing fluid 3 from a reservoir via a hose and / or pipe system.
- the fluid 3 drips or flows over the second passage channel 6 in the drip chamber. Air bubbles remain at the fluid boundary 4 or immediately escape into the environment.
- the fluid is sucked out of the reaction chamber 2 via the first passage channel 5.
- unused, bubble-free culture medium always gets into the reaction space 2 by the fluid 3 flowing in from the supply in the drip space.
- the fluid 3 in the drip chamber is drawn into the reaction chamber 2 by suction of the liquid from the reaction chamber 2.
- the height of the fluid limit 4 and thus the storage volume is determined with the aid of the first passage 5.
- the height of the fluid limit 4 can also be determined using the third passage 11 as an emergency suction channel.
- FIG. 3 shows a further embodiment of the arrangements for the first and second passage channels 5, 6.
- the second passage channel 6 for the supply of the fluid is arranged next to the head carrier 1 and the first passage channel 5 in the bottom of the reaction space 2.
- other equivalent arrangements are also possible.
- reaction space 2 If the reaction space 2 is changed by a lifting mechanism of the head support 1, the fluid 3 in the drip space mixes with the fluid in the reaction space 2.
- the properties of the fluids on the surfaces are influenced such that air bubbles in the fluids can escape more easily and bubbles directly at the flow head in intercepted in the immediate vicinity of the reaction space 2 and prevented from being transported to the reaction space 2.
- the advantages of the new system are, on the one hand, the simple structure and, on the other hand, that there is no change in the medium (liquid) since the gas content in the fluid is not changed (degasifier (heat, vacuum)). There is no ultrasonic degassing or heating.
- the cells can be adequately supplied with gases (eg OZ).
- gases eg OZ.
- a reference electrode or other external sensors that may be necessary for the measurement can be placed in such a way that they themselves or their electrolyte have no unwanted influence on the measurement.
- a further advantage is that the reaction space can be irrigated, the space for “passing through” air bubbles is no longer necessary. Likewise, by reducing the reaction space, changes in the fluid due to surface reactions can be detected and smaller volumes of test substances / test materials are made possible.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Analytical Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Genetics & Genomics (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04791117A EP1667795A2 (de) | 2003-10-03 | 2004-10-01 | Verfahren und versorgungseinheit zur berwachung von veränderungen und zuständen in reaktionskammern |
JP2006530271A JP2007507335A (ja) | 2003-10-03 | 2004-10-01 | 反応チャンバ内の変化および状態を監視する方法および管理ユニット |
US10/574,338 US20070037285A1 (en) | 2003-10-03 | 2004-10-01 | Method and supply unit for monitoring changes and states in reaction chambers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10346451A DE10346451B4 (de) | 2003-10-03 | 2003-10-03 | Verfahren zur Überwachung von Veränderungen und Zuständen in Reaktionskammern |
DEDE10346451.4 | 2003-10-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2005033261A2 true WO2005033261A2 (de) | 2005-04-14 |
WO2005033261A3 WO2005033261A3 (de) | 2005-05-26 |
WO2005033261B1 WO2005033261B1 (de) | 2005-07-14 |
Family
ID=34399314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/052405 WO2005033261A2 (de) | 2003-10-03 | 2004-10-01 | Verfahren und versorgungseinheit zur überwachung von veränderungen und zuständen in reaktionskammern |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070037285A1 (de) |
EP (1) | EP1667795A2 (de) |
JP (1) | JP2007507335A (de) |
DE (1) | DE10346451B4 (de) |
WO (1) | WO2005033261A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7276351B2 (en) | 2003-09-10 | 2007-10-02 | Seahorse Bioscience | Method and device for measuring multiple physiological properties of cells |
US8658349B2 (en) * | 2006-07-13 | 2014-02-25 | Seahorse Bioscience | Cell analysis apparatus and method |
US8202702B2 (en) * | 2008-10-14 | 2012-06-19 | Seahorse Bioscience | Method and device for measuring extracellular acidification and oxygen consumption rate with higher precision |
DE102009036695B3 (de) * | 2009-08-07 | 2011-04-07 | Hp Medizintechnik Gmbh | Einsatz für ein Well in einer Multiwellplatte und dessen Verwendung |
CN104471052B (zh) | 2012-11-13 | 2017-06-13 | 海马生物科学公司 | 用于基于控制介质流动的三维组织测量的装置和方法 |
WO2015187717A1 (en) | 2014-06-02 | 2015-12-10 | Seahorse Bioscience | Single column microplate system and carrier for analysis of biological samples |
US10883978B2 (en) * | 2017-01-31 | 2021-01-05 | Agilent Technologies, Inc. | Method and device for calibration of biological flux |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19920811A1 (de) * | 1999-05-06 | 2000-11-16 | Micronas Intermetall Gmbh | Vorrichtung zur Durchführung von Untersuchungen an Zellkulturen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS615774A (ja) * | 1984-06-19 | 1986-01-11 | Kyowa Hakko Kogyo Co Ltd | 発酵槽から発酵液の無菌採取装置 |
JPH0697991B2 (ja) * | 1986-07-31 | 1994-12-07 | エイブル株式会社 | 多孔性素材を用いる化学反応方法及び装置 |
US6017483A (en) * | 1997-07-18 | 2000-01-25 | Becton Dickinson And Company | Receptacle with a fused coating on an interior surface and an injection molding process for forming the article |
DE10019862A1 (de) * | 2000-04-18 | 2001-11-08 | Cell Lining Ges Fuer Zellkulti | Verfahren und Vorrichtung zur Automatisierung des Medienwechsels in Zellkulturen |
WO2002072423A1 (en) * | 2001-03-09 | 2002-09-19 | Biomicro Systems, Inc. | Microplate lid |
DE50210515D1 (de) * | 2001-07-16 | 2007-08-30 | Theodor Lauboeck | Verfahren und vorrichtung zur bereitung eines mit mikroorganismen befrachteten fluides, mikroorganismen enthaltender stoff sowie verfahren zur veränderung der wachstumsbedingungen von pflanzen |
-
2003
- 2003-10-03 DE DE10346451A patent/DE10346451B4/de not_active Expired - Fee Related
-
2004
- 2004-10-01 JP JP2006530271A patent/JP2007507335A/ja not_active Withdrawn
- 2004-10-01 EP EP04791117A patent/EP1667795A2/de not_active Ceased
- 2004-10-01 US US10/574,338 patent/US20070037285A1/en not_active Abandoned
- 2004-10-01 WO PCT/EP2004/052405 patent/WO2005033261A2/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19920811A1 (de) * | 1999-05-06 | 2000-11-16 | Micronas Intermetall Gmbh | Vorrichtung zur Durchführung von Untersuchungen an Zellkulturen |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN Bd. 012, Nr. 248 (C-511), 13. Juli 1988 (1988-07-13) -& JP 63 036783 A (ISHIKAWA SEISAKUSHO:KK; others: 01), 17. Februar 1988 (1988-02-17) * |
Also Published As
Publication number | Publication date |
---|---|
DE10346451B4 (de) | 2007-08-02 |
EP1667795A2 (de) | 2006-06-14 |
WO2005033261B1 (de) | 2005-07-14 |
JP2007507335A (ja) | 2007-03-29 |
DE10346451A1 (de) | 2005-05-12 |
US20070037285A1 (en) | 2007-02-15 |
WO2005033261A3 (de) | 2005-05-26 |
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