WO2003097787A1 - Dispositif de culture de cellules - Google Patents
Dispositif de culture de cellules Download PDFInfo
- Publication number
- WO2003097787A1 WO2003097787A1 PCT/FR2003/001496 FR0301496W WO03097787A1 WO 2003097787 A1 WO2003097787 A1 WO 2003097787A1 FR 0301496 W FR0301496 W FR 0301496W WO 03097787 A1 WO03097787 A1 WO 03097787A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- enclosure
- mouth
- cells
- air
- 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.)
- Ceased
Links
Classifications
-
- 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
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/06—Plates; Walls; Drawers; Multilayer plates
-
- 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
Definitions
- the present invention relates to a cell culture device allowing their treatment by different media while avoiding their manipulation.
- the document FR 2 659 347 (published on 13/151991) describes a device for the culture of cells comprising an enclosure intended to receive the cells.
- the enclosure comprises a horizontal support formed by two glass plates juxtaposed and spaced so as to form between them a slot having a width less than the diameters of the cells.
- the cells to be treated are positioned on the slot.
- This enclosure is intended to contain liquid culture or pulse media.
- the various liquid media are successively injected into the enclosure by separate tubes positioned above the wall supporting the cells. Part of the liquid contained injected into the enclosure is evacuated by one or more tubing (s) located (s) below the wall. Another part of this liquid is evacuated by overflow.
- the cells are held on the slit by virtue of the depression caused by the aspiration of the liquid medium by the evacuation tube (s).
- a device is intended in particular for the culture of oocytes, fertilized eggs or embryos, etc.
- a culture medium is injected into the enclosure and the cells to be activated are positioned in this culture medium.
- the culture medium rich in ions is then removed and simultaneously replaced by an impulse medium containing Ca 2+ ions.
- the cells are subjected to an electric field pulse which causes the transient electro-waterproofing of their plasma membrane and the penetration of Ca 2+ ions inside. cells.
- the impulse medium is in turn evacuated and replaced by the culture medium.
- An advantage of this device is that it allows the treatment of cells by different media while avoiding their manipulation.
- a problem posed by this type of device is that the replacement of one medium by another is relatively long, which limits the frequency of alternation of the media in the enclosure.
- a minimum time of injection of the pulse medium is necessary (of the order of 40 seconds) to replace the culture medium with the medium d 'impulse. This minimum time indeed guarantees sufficient washing of the cells by the pulse medium.
- the pulse medium would contain residual ions from the culture medium. During the application of the electric field, these ions would induce a trans-membrane ion current which would cause the destruction of cells.
- Another problem with washing is that prolonged exposure of cells in the pulse medium with low ionic strength disturbs the balance of the cells and exposes them to deleterious effects. To preserve cell survival, it is therefore necessary to reduce the cell washing time.
- An object of the invention is to provide a cell culture device making it possible to quickly replace the medium in which the cells are placed.
- the cells tend to translate along the slit of the support element towards the center of the chamber where they group. They are compressed against each other. Reducing the space between cells changes the efficiency of washing at the periphery of each cell.
- these films can constitute conductivity bridges between the electrodes. These conductivity bridges establish a short circuit between the electrodes. This results in a significant decrease in the efficiency of the applied electric field.
- the invention provides a device intended in particular for cell culture comprising an enclosure intended to receive the cells, said enclosure comprising at least one liquid injection duct, the surface of the liquid contained in the enclosure being in free contact with air, characterized in that it comprises a collecting element capable of establishing with the free surface of the liquid at least one liquid bridge, the collecting element comprising a mouthpiece positioned substantially at the level of the free surface of the liquid contained in the enclosure, the mouth being maintained in depression so that it absorbs a flow of air which drives the surface film of the liquid via the liquid bridge.
- the device of the invention makes it possible to create a liquid bridge in the form of a meniscus between the free surface of the liquid and the collecting element. This meniscus regulates by surface balance the surface tensions on the surface of the liquid contained in the enclosure.
- Such a device makes it possible, thanks to the air flow, to continuously eliminate the excess liquid in the enclosure and thus to maintain a constant level of liquid.
- the collecting element is positioned on a rim of a wall of the enclosure, its mouth being set back from the wall.
- a portion of the rim located in front of the mouth of the collecting element is covered with a hydrophilic substance.
- the mouth is set back from the wall at a distance d of between 10 and 30 ⁇ m.
- the mouth of the manifold has an elongated shape and extends longitudinally along the edge of the wall.
- the opening has a length of the order of 2 to 4 mm. In one implementation of the invention, the opening has a height of the order of 0.15 to 0.30 mm.
- the mouth of the collecting element has a generally rectangular shape.
- the device comprises several elements positioned along the edges of the walls of the enclosure.
- the invention also relates to a method for regulating the level of a liquid contained in an enclosure intended to receive cells, said enclosure comprising at least one liquid injection duct, the surface of the liquid contained in the enclosure being in free contact with the air, characterized in that at least one liquid bridge is established with the free surface of the liquid and an air flow is sucked near the liquid bridge, so that this air flow carries the surface film of the liquid through the liquid bridge.
- FIG. 1 is a diagram representative of an example of a cell culture device in accordance with an implementation of the invention
- FIG. 2 is a detailed diagram of a collector of the device of FIG. 1,
- FIG. 1 is a sectional diagram of the collector of Figure 2.
- the cell culture device shown comprises an enclosure 100 comprising walls 11, 12, 13 defining a chamber 20 intended to contain a liquid medium .
- the chamber is filled with a liquid medium corresponding to the treatment phase of the cells in progress.
- a horizontal support element is positioned, formed by the juxtaposition of two glass plates 101 and 102.
- the glass plates 101 and 102 are kept embedded in the side walls 11 and 12 of the enclosure. These glass plates 101 and 102 are spaced so as to define between them a rectilinear slot 103 of width less than the diameter of the oocytes 10 to be treated.
- the enclosure 100 also comprises electrodes 111 and 112 extending longitudinally on either side of the slot 103.
- the culture liquid is brought into the upper part of the chamber
- the free surface of the liquid contained in the enclosure 100 forms a molecular film 30 having a convex shape.
- This film 30 is made up of an alignment of oriented molecules whose hydrophilic function is positioned towards the fluid and the hydrophobic portion is positioned towards the outside air.
- the culture device comprises collectors 40 positioned on a horizontal rim 21 of the wall 11 of the chamber 20.
- the device may include collectors positioned on flanges 22 or 23 of the walls 12 or 13 (at the locations shown in dotted lines).
- These collectors 40 can be arranged at regular intervals around the chamber 20.
- FIG 2 is a diagram showing in more detail a collector 40 of the cell culture device of Figure 1.
- Two liquid bridges 51 and 52 are formed between the surface 30 of the liquid contained in the chamber 20 and the vertical edges of the opening 42. These liquid bridges 51 and 52 are formed by deformations of the surface 30 of the liquid (or menisci) in contact with the edges of the opening 42.
- the collector 40 also comprises a discharge duct 43 connected to a suction device, not shown.
- This suction device makes it possible to aspirate the air contained in the manifold 40.
- This suction causes air circulation through the opening 42 which drives an upper portion of the liquid contained in the enclosure via the liquid bridges 51 and 52.
- the molecular film 30 on the surface of the liquid is permanently entrained by the air circulating in the collector and removed from the surface of the liquid.
- the length L of the opening has been chosen so as to be at least twice the capillary length k "1 of the liquid contained inside the enclosure. This characteristic guarantees the formation of two lateral menisci and therefore the non-sealing of the opening 42 by the liquid. The air is therefore always free to circulate through the opening 42.
- the liquids generally used for the treatment of cells generally have capillary lengths between 1 mm and 2 mm.
- the length L of the opening will therefore preferably be of the order of 2 to 4mm.
- the collector 40 is positioned set back from the wall by a distance d. Indeed, the opening must not be too close to the wall 11, in which case, the capillary forces would lead to the formation of a single liquid bridge which would close the opening 42 and which would empty the chamber 20 of the liquid which it contains.
- the opening 42 must not be too far from the wall 11, in which case the manifold would no longer have any effect on the liquid. Furthermore, a distance d of a few microns leads to the formation of a concave meniscus.
- the concave shape has several drawbacks:
- the concave shape modifies the optical path of the light and makes it more difficult for the operator to view the cells.
- the distance d is preferably between 10 and 30 ⁇ m.
- the distance d is 20 ⁇ m.
Landscapes
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Zoology (AREA)
- Biomedical Technology (AREA)
- Sustainable Development (AREA)
- Microbiology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Immunology (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/515,805 US7527965B2 (en) | 2002-05-21 | 2003-05-16 | Cell culture device |
| EP03752829A EP1507846A1 (fr) | 2002-05-21 | 2003-05-16 | Dispositif de culture de cellules |
| JP2004506446A JP4410848B2 (ja) | 2002-05-21 | 2003-05-16 | 細胞培養装置 |
| AU2003260552A AU2003260552A1 (en) | 2002-05-21 | 2003-05-16 | Cell culture device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206185A FR2839979B1 (fr) | 2002-05-21 | 2002-05-21 | Dispositif de culture de cellules |
| FR02/06185 | 2002-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003097787A1 true WO2003097787A1 (fr) | 2003-11-27 |
Family
ID=29414954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2003/001496 Ceased WO2003097787A1 (fr) | 2002-05-21 | 2003-05-16 | Dispositif de culture de cellules |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7527965B2 (fr) |
| EP (1) | EP1507846A1 (fr) |
| JP (1) | JP4410848B2 (fr) |
| AU (1) | AU2003260552A1 (fr) |
| FR (1) | FR2839979B1 (fr) |
| WO (1) | WO2003097787A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006089354A1 (fr) * | 2005-02-23 | 2006-08-31 | M.B.T.L. Limited | Dispositif de culture |
| EP2304016B1 (fr) * | 2008-07-16 | 2012-06-27 | Cook Medical Technologies LLC | Dispositif microfluidique de manipulation et de conservation de cellules |
| EP2603517B1 (fr) * | 2010-05-12 | 2023-07-19 | Cellectis | Chambre de mélange dynamique et d'électroporation et système |
| WO2018044699A1 (fr) | 2016-08-27 | 2018-03-08 | 3D Biotek, Llc | Bioréacteur |
| CN110190189B (zh) * | 2019-06-06 | 2020-08-04 | 河南大学 | 一种纤维液桥薄膜制备装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19948473A1 (de) * | 1999-10-08 | 2001-04-12 | Nmi Univ Tuebingen | Verfahren und Vorrichtung zum Messen an in einer flüssigen Umgebung befindlichen Zellen |
| WO2001059447A1 (fr) * | 2000-02-11 | 2001-08-16 | Yale University | Electrodes patch-clamp planes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991013977A1 (fr) * | 1990-03-12 | 1991-09-19 | Institut National De La Recherche Agronomique (Inra) | Procede de stimulation artificielle de cellules et dispositif de culture d'ovocytes |
| US6423536B1 (en) * | 1999-08-02 | 2002-07-23 | Molecular Dynamics, Inc. | Low volume chemical and biochemical reaction system |
-
2002
- 2002-05-21 FR FR0206185A patent/FR2839979B1/fr not_active Expired - Fee Related
-
2003
- 2003-05-16 EP EP03752829A patent/EP1507846A1/fr not_active Withdrawn
- 2003-05-16 US US10/515,805 patent/US7527965B2/en not_active Expired - Fee Related
- 2003-05-16 JP JP2004506446A patent/JP4410848B2/ja not_active Expired - Fee Related
- 2003-05-16 AU AU2003260552A patent/AU2003260552A1/en not_active Abandoned
- 2003-05-16 WO PCT/FR2003/001496 patent/WO2003097787A1/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19948473A1 (de) * | 1999-10-08 | 2001-04-12 | Nmi Univ Tuebingen | Verfahren und Vorrichtung zum Messen an in einer flüssigen Umgebung befindlichen Zellen |
| WO2001059447A1 (fr) * | 2000-02-11 | 2001-08-16 | Yale University | Electrodes patch-clamp planes |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2839979B1 (fr) | 2004-08-20 |
| JP2005525812A (ja) | 2005-09-02 |
| EP1507846A1 (fr) | 2005-02-23 |
| FR2839979A1 (fr) | 2003-11-28 |
| AU2003260552A1 (en) | 2003-12-02 |
| JP4410848B2 (ja) | 2010-02-03 |
| US7527965B2 (en) | 2009-05-05 |
| US20050233441A1 (en) | 2005-10-20 |
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