EP2171035A1 - Procédé et dispositif permettant de collecter des cellules biologiques issues d'une culture de cellules souches - Google Patents

Procédé et dispositif permettant de collecter des cellules biologiques issues d'une culture de cellules souches

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Publication number
EP2171035A1
EP2171035A1 EP08785094A EP08785094A EP2171035A1 EP 2171035 A1 EP2171035 A1 EP 2171035A1 EP 08785094 A EP08785094 A EP 08785094A EP 08785094 A EP08785094 A EP 08785094A EP 2171035 A1 EP2171035 A1 EP 2171035A1
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EP
European Patent Office
Prior art keywords
substrate
cells
receiving
main
cell
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Withdrawn
Application number
EP08785094A
Other languages
German (de)
English (en)
Inventor
Charli Kruse
Günter FUHR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP2171035A1 publication Critical patent/EP2171035A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
    • C12M33/14—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus with filters, sieves or membranes
    • 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
    • C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus

Definitions

  • the invention relates to a method for receiving biological cells from a plurality of stem cells, in which the cells to be picked migrate by means of their natural cell movement onto a receiving substrate. Furthermore, the invention relates to a substrate arrangement for receiving biological cells from a plurality of stem cells, wherein the substrate arrangement comprises two substrates, between which the cells to be picked up can be transmitted by their natural cell movement.
  • the cell movement (English: cell locomotion) generally includes a change in location of a complete cell on the solid surface of the substrate or in cell material by a rearrangement of adhesive contacts of cell organs (membrane organs, for example membrane evaginations).
  • the natural cell movement is described, for example, by M. Abercrombie et al. in “Experimental Cell Research", Vol. 67, 1971, pp. 359-367 and by L.P. Cramer in "Biochem. Soc., Symp.”, Vol. 65, 1999, pp. 173-205.
  • 2006/051735 A1 describes a transfer of biological cells by natural cell movement between a carrier and a probe. Since the transfer is due to the natural cell movement, mechanical or biochemical minimizes mixing influences on the cells and prevents unphysiological interventions, such as trypsinization of the cell material.
  • the combination of a carrier and a probe described in US 2006/051735 A1 represents a special tool whose practical applicability may be limited by the following problems. Since the probe is for receiving a single cell from the carrier or for transmitting a single cell to the carrier, it is necessary to transmit a plurality of cells for serial operation or to use a plurality of probes. In the first case, there is the disadvantage of a high expenditure of time, while the second variant would be limited to the combination of a few probes for reasons of space. Furthermore, the probe is only suitable for transporting the cell. For further examinations or treatments, the cell must be transferred from the probe to another substrate.
  • a further disadvantage may be that all cells involved in the transfer, that is to say both the cells in the cell material on the support and also the cell to be transferred, have the natural cell movement.
  • the selective removal of individual cells or small cell groups from the cell material on the support therefore requires measures to avoid transmission of unwanted cells. For example, it may be necessary for the carrier and probe to be moved during transmission. Furthermore, for selective removal of certain cells, it may be necessary to observe the orientation of the support and the probe and the migration of the cell in question with a microscope. Because of the disadvantages mentioned restrictions are out ⁇ clearly the automation of the conventional art.
  • Another disadvantage of the conventional technique is that for the selective transmission of certain cells, previous knowledge about these cells must be available.
  • the differentiated cells For example, if in a stem cell culture in which some cells have differentiated (for example, differentiation to nerve cells), the differentiated cells are to be taken for further study or application, the differentiated cells in the stem cell culture must be identified. To date, this requires an invasive procedure in the stem cell culture, such as a specific staining, which is an undesirable effect on the cells.
  • biological cells on a substrate typically form a cell layer with few cell layers or a single cell layer (monolayer).
  • Certain cell types are characterized by the fact that they grow beyond the thickness of the monolayer.
  • stem cells in the adherent state form three-dimensional cell aggregates (so-called organoid bodies, see C. Kruse et al., Appl. Phys., A, Vol. 79, 2004, pp. 1617-1624, and C. Kruse et al. in Ann. Anat. x ⁇ Vol. 188 (6), 2006, pp.
  • the object of the invention is an improved method for receiving, in particular separation of biological cells from a stem cell culture that avoids the disadvantages and limitations of the conventional art. Furthermore, the object is to provide an improved substrate arrangement, with which in particular the disadvantages of the conventional combination of a carrier and a probe are overcome.
  • the invention is based on the general technical teaching to provide a method for receiving biological cells from a cell culture in which the cells move by their natural cell movement from one main substrate on which the cell culture is arranged on one or more receiving substrates on which or which a cultivation of the cells takes place.
  • the cell transfer takes place between substrates, which are both set up for a cultivation of biological cells.
  • the stated object is achieved by a substrate arrangement having at least two substrates which are positioned adjacent to one another such that the cells can be transferred from one of the substrates to the adjacent substrate by their natural cell movement.
  • the substrates comprise a main substrate on which a cell culture can be cultured, and at least one receiving substrate which is suitable for settling with cells from the cell culture of the main substrate and is set up to cultivate these cells.
  • the main substrate and the at least one receiving substrate are separate components which can be positioned adjacent to one another for cell transfer and can be separated from one another after cell transfer.
  • At least one receiving substrate may be a single cell or it may be a variety of
  • Cells (e.g., at least 10, 100, 1000, or even a million or more cells) can be simultaneously taken from the main substrate.
  • the cultivation of the cells on the at least one receiving substrate makes it possible for the cells on the receiving substrate to be subjected to further methods, in particular examinations or treatments, without further intermediate steps.
  • For the transfer of the cells on the at least one receiving substrate it is only necessary that this is arranged to match an edge of the main substrate.
  • the transmission of the cells does not require any combination of the cells on the at least one receiving substrate.
  • the at least one receiving substrate is set up for culturing cells that have migrated out of the cell culture.
  • the receiving substrate has a substrate surface whose size and material are selected such that an adherent cell culture comprising at least one cell or a multiplicity of cells (preferably at least 10 cells, eg a few thousand cells) can be formed on the receiving substrate.
  • the cells are culturable on the receiving substrate, ie the receiving substrate is for growth and / or differentiation of cells under adjustable, reproducible culture conditions.
  • a surface modification eg a molecular deposition or a micro- or nanostructurization
  • cells of at least one three-dimensional cell aggregate arranged on the main substrate are transferred to the at least one receiving substrate.
  • the three-dimensional cell aggregate is formed from stem cells, and if necessary a mixture of cell h ⁇ len of various types and preferably comprises an organoid body, as for example, by C. Kruse et al. described in the above publications.
  • the organoid body preferably has a cross-sectional dimension (eg, thickness, diameter) in the range of 50 ⁇ m to 20 mm.
  • the inventors have found that the property of organoid bodies to form a three-dimensional cell cluster in the adherent state, from the surface of which uniformly grow cells, offers a significant advantage for the invention.
  • the organoid body forms a fixed cell culture on the main substrate, ie during the transfer of cells to the at least one receiving substrate, the position of the organoid body remains unchanged.
  • Cell aggregate is impaired. There is no need for microscopic observation or control.
  • the method can advantageously be automated.
  • the permanent proliferation of organic the body exploited.
  • the growth of cells from organoid bodies can occur over long cultivation times, eg. B. be stable in the range of 1 or 2 days to 2, 10, 30 or more weeks.
  • the inclusion of cells on the at least one receiving substrate may also extend over a corresponding period of time.
  • the stated object is thus achieved, in particular, by a substrate arrangement with the main substrate and the at least one receiving substrate, wherein at least one three-dimensional cell aggregate, which is formed from stem cells and migrates out of the cell, is arranged on the main substrate.
  • the invention it would thus be possible to transfer exclusively cells to the at least one receiving substrate which migrate out of the organoid body, while other cells which are part of the organoid body remain on the main substrate. It allows a selective removal of the migrating cells from the stem cell culture in the organoid body. Special measures, such as tracking the adjacent substrates or monitoring the cell transfer are not required.
  • the method for receiving cells from the cell culture is in this case a process for the separation of cells from the organoid bodies, whereby, advantageously, the origin and the way the cells and optionally its change (for example, differentiation, dedifferentiation) tracked and documented ⁇ can be mented.
  • advantages may arise from the potential to form a plurality of daughter cell cultures on the receiving substrates, and / or from the possibility of exposing the cells on the different receiving substrates to different culturing conditions.
  • the substrate arrangement comprises the main substrate and a multiplicity of receiving substrates, which are formed matching the main substrate and can be positioned adjacent thereto.
  • a receiving substrate is formed to match the main substrate when the receiving substrate is positionable on the main substrate and a boundary line is formed by an edge of the main substrate, which cells overcome upon natural cell movement to reach the receiving substrate. It is preferably provided that the cells move from the main substrate directly to the receiving substrate.
  • the receiving substrates form a set of replacement parts with which the main substrate can be successively assembled. With each additional receiving substrate, additional cells can be taken up from the cell aggregate.
  • a modular system can thus be provided in which the first receiving substrate can be replaced by at least one further receiving substrate or in which an at least further receiving substrate follows the first receiving substrate.
  • the cells which are picked up by the various receiving substrates differ in their properties.
  • various inherent properties of the cells and / or different properties of the substrate surfaces of the receiving substrates can be used.
  • these cells may have different cell types, such as cells.
  • the inventors have found that the different cell types have different migration rates. Thus, starting from a start time at which the main substrate and the receiving substrate are positioned adjacent to each other, different cell types can be transferred to different receiving substrates at different times.
  • this allows a non-invasive separation of cells from the stem cell culture, in particular from the organoid body, depending on their cell types.
  • the inventors have also found that, depending on their types of differentiation, the cells may migrate to different receiving substrates by providing the receiving substrates with a modified substrate surface that is only exposed to a particular differentiation type.
  • the inventors have found evidence that, depending on previously unknown intrinsic properties, the cells may migrate or grow on different receiving substrates by providing the receiving substrates with a modified substrate surface onto which certain cells then migrate or grow.
  • the transfer of cells to a plurality of receiving substrates can be provided temporally successively on the main substrate.
  • the main substrate with the cell culture, in particular the organoid body, and a first receiving substrate for a cell transfer of a first cell group and / or a first cell type to the first receiving substrate are provided.
  • the main substrate and the first receiving substrate are separated from each other.
  • the further KuI The cells on the first receiving substrate are separated from the main substrate.
  • the steps of cell transfer and separation are repeated with at least one further receiving substrate, with further cells, in particular other cell types from the cell culture, migrating from the main substrate to the at least one further receiving substrate.
  • said separation can be achieved by cell types having different migration rates by providing the receiving substrates at predetermined time intervals on the main substrate. Furthermore, a multiplicity of daughter substrates can be colonized with cells from the cell culture. By sequentially combining the main substrate with the receiving substrates, for example, in a culturing device, a main substrate having an organoid body can be successively transferred between different receiving substrates to respectively colonize cells from the organoid body.
  • the receiving substrates may be arranged adjacent eg. To various portions of the edge of the main ⁇ substrate. This design is particularly suitable for the transfer of cells with the same migration speeds on receiving substrates with differently modified substrate surfaces.
  • the receiving substrates may be arranged on the main substrate in such a way that cells initially have an immediate bar migrate to the main substrate adjacent receiving substrate before they reach a receiving substrate at a greater distance from the main substrate.
  • high-rate migration cells in a time range migrate to remotely located receiving substrates by simultaneously moving cells at a slower rate of migration onto receiving substrates a short distance from the main substrate.
  • the migration of the cells can be directed or accelerated via chemotaxis, galvanotaxis or other attractors.
  • the cells migrate from the cell culture on the main substrate in at least two different directions to the at least one receiving substrate, advantages may result from an increased effectiveness of cell uptake from the cell culture.
  • the cells may migrate to a single receiving substrate which at least partially surrounds the main substrate, or may migrate to various receiving substrates which are respectively arranged in different directions of cell migration.
  • Particularly preferred is a variant in which the cells move radially on all sides from the cell culture, in particular from the organoid body on the main substrate on the at least one receiving substrate. The inventors have found that the speed of the
  • the at least one recording Substrate formed a substrate frame surrounding the main substrate.
  • the substrate frame is particularly suitable for receiving cells which migrate on all sides from the main substrate onto the at least one receiving substrate.
  • a receiving substrate is referred to as a substrate frame when the substrate surface intended to receive and cultivate the cells surrounds an area which remains free of cells during cell transfer.
  • the substrate frame may have an inner opening that forms the cell-free area and into which the main substrate can be inserted.
  • the receiving substrate for forming the substrate frame may be a substrate having a closed substrate surface on which the main substrate can be placed for cell transfer so that an outer region of the substrate remains free as a substrate surface for receiving and culturing the cells.
  • the substrate arrangement according to the invention comprises a stack of a main substrate and at least one renewable sub- strat.
  • the substrate frame thus generally has an inner edge adapted to the shape and size of the edge of the main substrate.
  • the inner edge of the substrate frame is complementary to the polygonal shape.
  • a circular shape of the main substrate and the inner edge of the substrate frame is preferred.
  • the substrate frame is also referred to as a substrate ring.
  • the circular shape offers advantages for a radially all-round uniform transfer of the cells to the receiving substrate.
  • the substrate frame may be composed of a plurality of receiving substrates (substrate segments). be set, which are positioned on different sides adjacent to the main substrate.
  • the substrate segments are separable components which, when assembled, form the substrate frame. With the substrate segments, differently modified substrate surfaces can advantageously be provided for a cell transfer.
  • the cells separated simultaneously from the cell culture on the main substrate may be subjected to various culture conditions on the substrate segments.
  • the receiving substrates can form a composite substrate.
  • the main substrate and the substrate composite can be positioned relative to each other so that the main substrate is adjacent to a respective receiving substrate of the composite substrate.
  • the main substrate and the substrate composite are movable relative to each other.
  • the composite substrate forms a flexible substrate strip, in the surface of which the receiving substrates are formed.
  • a number of the receiving substrates are provided along the length of the substrate tape.
  • the substrate tape is adapted for translational movement relative to a peripheral edge of the main substrate. The peripheral edge of the main substrate rests on the surface of the substrate tape.
  • a predetermined receiving substrate can be provided on the main substrate by the translation of the substrate tape.
  • the substrate tape may be from a substrate roll are pulled past the main substrate to accommodate cells on the various receiving substrates.
  • the displacement of the composite substrate relative to the main substrate is discontinuous, there are advantages for processes in which cells alternately migrate on one of the receiving substrates and then the respective receiving substrate is separated from the main substrate.
  • the displacement of the composite substrate relative to the main substrate can be carried out continuously.
  • the cells can be transferred continuously to the composite substrate.
  • large surfaces can be populated with cells that have emigrated from a single cell culture, in particular a single organoid body.
  • Main substrate is preferably at a rate adapted to the rate of natural cell movement.
  • the speed is z. B. in the range of 1 .mu.m / h to 400 .mu.m / h.
  • FIG. 1 shows a schematic illustration of a first embodiment of the invention with a cell migration onto a substrate ring
  • FIG. 2 shows a plan view of a substrate arrangement with a stack of main and receiving substrates
  • FIGS. 3 and 4 are schematic side views of substrate arrangements according to the invention.
  • FIG. 5 shows a further schematic illustration of the first embodiment of the invention with a cell migration onto substrate segments
  • FIG. 6 shows a schematic side view of a second embodiment of the invention with a composite substrate
  • FIG. 7 shows a plan view of the embodiment of the invention shown in FIG.
  • Embodiments of the invention are described below by way of example with reference to the inclusion of stem cells and / or differentiated cells from cell aggregates (organoid bodies) formed from glandular stem cells.
  • the implementation of the invention is not limited to the use of the glandular stem cells, but also possible with other, adult or embryonic stem cells, progenitor cells and cell mixtures of human or animal origin.
  • the cell aggregates may contain different cell types, that is to say in addition to the stem cells, also progenitor cells and / or differentiated cells.
  • cells can be picked from a tissue isolate (eg, dermis, hair band). Details of the cultivation of stem cells or other cell types are not described here, as these are known per se from the standard methods of cell biology.
  • the substrate here is generally used a component which is suitable as a carrier for biological cells.
  • the substrate has a substrate surface on which the cells adhere and can perform the natural cell movement.
  • the substrate has a planar extent, it consists of a solid material, which may be rigid (eg, disc, plate) or compliant (eg, foil).
  • the main and recording substrates are interconnected.
  • the main and recording substrates have z. B. planar substrate surfaces, which are arranged adjacent to each other in the connected state or overlapping.
  • the substrate arrangement according to the invention is in a cultivation device, which is not shown in the figures.
  • the cultivation device comprises z. B. a conventional culture vessel with a liquid culture medium.
  • FIG. 1 schematically illustrates in plan view a first embodiment of the substrate arrangement 100 according to the invention a main substrate 10 and a receiving substrate 20.
  • the main substrate 10 comprises a plate in the form of a circular disk with a circular outer edge 11.
  • the main substrate 10 is z. As glass or plastic.
  • a coating for providing predetermined cultivation conditions e.g. As a coating of laminin, poly-lysine, gelatin, fibronectin or other peptides may be provided.
  • the diameter of the main substrate 10 is z. B. in the range of 0.5 mm to 2 cm.
  • the thickness of the main substrate 10 is z. B. in the range of 10 microns to 2 mm.
  • the main substrate 10 can be equipped with a schematically illustrated support element 13 (see FIG. 3).
  • the support member 13 is a protrusion facilitating manipulation of the main substrate 10 using a mechanical tool.
  • the receiving substrate 20 comprises a substrate ring 21 with a substrate surface 21.1, which is set up for culturing biological cells.
  • the substrate ring 21 has an inner opening 21.2, which is bounded by the inner edge 21.3 of the substrate ring 21.
  • the shape and size of the inner edge 21.3 is equal to the shape and size of the outer edge 11 of the main substrate 10 is selected.
  • the outer diameter of the substrate ring 21 is z. B. in the range of 5 mm to 5 cm.
  • the main substrate 10 fits positively into the inner opening 21.2 of the substrate ring 21.
  • the surfaces of the main substrate and the receiving substrate are preferably aligned.
  • the main substrate 10 and the substrate ring 21 are separate components which can be assembled for the cell transfer according to the invention.
  • FIG. 1 also shows the steps of the method according to the invention for receiving cells from a cell culture scheme. illustrated.
  • the cell culture 3 is cultured on the main substrate 10.
  • the cell culture 3 comprises one or more organoid bodies containing stem cells.
  • the cultivation of the cell culture 3 with the formation of the organoid body on the main substrate 10 takes place while the main substrate 10 is still separated from the substrate ring 21 or already inserted therein.
  • organoid body cells 1, 2 migrate from the cell culture 3 radially all sides (see arrows).
  • the cells 1, 2 migrate to the substrate ring 21, on which a further cultivation of the cells takes place.
  • the main substrate 10 and the receiving substrate 20 are separated from each other (see the lower part of Fig. 1).
  • the time of separation is chosen depending on the specific conditions of use of the invention. For example, the separation can take place after a predetermined transfer time (eg 1 hour to 14 days) or after reaching a predetermined degree of colonization of the receiving substrate 20.
  • Receiving substrate 20 (not shown in Figure 1) are combined to transfer more cells on the other receiving substrate. Furthermore, the cell culture formed on the substrate ring 21 further steps of treatment and / or examination, such. B. undergo further differentiation.
  • FIG. 2 illustrates a modified variant of a substrate arrangement 100 in which a plurality of receiving substrates 20. 20.2, 20.3 are combined with a main substrate 10 as a substrate stack.
  • the main substrate 10 with the cell culture 3 comprises a circular disc which rests on the first receiving substrate 20.1.
  • the first receiving substrate 20.1 likewise comprises a circular disk which lies on the second receiving substrate 20.2, which in turn lies on the third receiving substrate 20.3. Since the receiving substrates 20.1, 20.2 and 20.3 have different diameters, a substrate ring is formed by a concentric arrangement on each of the receiving substrates.
  • the first substrate ring which surrounds the main substrate 10 on all sides, is formed by the part of the first receiving substrate 20. 1 not covered by the main substrate 10.
  • the thickness of the main substrate 10 is preferably chosen to be less than 1 mm, in particular less than 250 ⁇ m.
  • the main substrate 10 for example, from a plastic film, for. B. polyurethane.
  • the thicknesses of the receiving substrates 20.1 and 20.2 preferably also have a thickness which is less than 1 mm, in particular less than 250 ⁇ m.
  • the contiguous edges of the main and receiving substrates may be tapered to facilitate cell migration between the substrates.
  • the main substrate 10 is placed with the cell culture 3 on the stack of receiving substrates 20.1, 20.2 and 20.3.
  • the cells migrating out of the cell culture 3 move radially on all sides towards the substrate rings due to the natural cell movement. Since the different cell types that migrate out of the cell culture 3 may differ in their migration rates, the cell transfer can be separated into cell types. So After a predetermined time of cell transfer (eg 1 to 2 hours to 14 days), the fastest cells reach the outermost substrate ring 21.3, while the remaining cells are located on the inner substrate rings 21.1, 21.2. Subsequently, a separation of the main substrate 10 from the receiving substrates 20.1, 20.2 and 20.3 and a separation of the receiving substrates from each other. The main substrate 10 with the cell culture 3 is then placed on a further substrate stack to accommodate further cells from the cell culture 3. The receiving substrates 20.1, 20.2 and 20.3 are subjected to further cultivation steps.
  • the principle of forming a substrate stack shown in Figure 2 is not limited to the combination of the main substrate 10 with three recording substrates, but correspondingly also possible, for example, with a single recording substrate or more than three recording substrates.
  • the receiving substrates may comprise substrate rings with different inner diameters, which are placed on a main substrate.
  • the main substrate 10 lies on a flat substrate as described in FIG. By its part not covered by the main substrate 10, the Radiosub- strat 20 (substrate ring 21) is formed.
  • the cell culture 3 is arranged, from which cells 1, 2 emigrate and are transferred to the substrate ring 21. After the settlement of the substrate ring 21 with the cells 1, 2, the main substrate 10 may be removed from the Sub-area ⁇ strat with the cell culture 3 and fed to further process steps, become.
  • the main substrate 10 on the support member 13 with a mechanical tool (not shown) is taken.
  • Figure 4 illustrates the reverse principle of forming a substrate stack, in which the main substrate 10 forms a support for an annular receiving substrate 20 having an inner opening 21.2.
  • the cell culture 3 rests immobile on the receiving substrate 10 in the inner opening 21.2 of the receiving substrate 20.
  • the cell 1, 2 migrating from the cell culture colonize the substrate surface of the receiving substrate 20, where a further cultivation of the cells 1, 2 takes place.
  • FIG. 5 illustrates a further variant of the invention in which a plurality of substrate segments 22.1, 22.2 and 22.4, which surround the main substrate 10, are provided as receiving substrates 20.
  • the substrate segments 22.1 to 22.4 in the assembled state form a substrate ring which can be populated with cells, as described above with reference to FIG. After cell transfer, substrate segments 22.1 to 22.4 can be separated (see arrows). After the separation of different substrate segments may be combined with ⁇ each other to bring the cells to the substrate segments to interact.
  • the separation may comprise a displacement of the substrate segments 22.1 to 22.4 on a common carrier, which forms a further receiving substrate 20.4.
  • the cells can migrate from the substrate segments 22.1 to 22.4 onto the further receiving substrate 20.4 and interact therewith.
  • FIG. 5 schematically illustrates that the receiving substrate 20 may have a biologically active coating.
  • the biologically active coating may, for. Fibronectin, another matrix molecule, a polymer or immobilizing signaling molecules.
  • the coating may be homogeneously formed (22.1), have a surface density gradient (22.2) or comprise at least one coating substance (22.3, 22.4). Different coating substances may partially overlap at the transition between the substrate segments (22.3, 22.4).
  • patterns of the coating may be provided with detail structures with typical dimensions in the ⁇ m or mm scale. Due to the biologically effective coating of the substrate segments, different cultivation conditions are created on the different parts of the receiving substrate 20. For example, the stem cells that migrate out of the cell culture 3 can be differently differentiated on the substrate segments 22.1 to 22.4. After separation of the substrate segments and / or transfer to the common receiving substrate 20.4, the differentially differentiated cells can interact with each other. According to a further variant, different recording substrates can be colonized with cells from different cell cultures (not shown in FIG. 5). After the cell transfer to the receiving substrates , a mutual interaction of the different cells can be provided.
  • FIGS ⁇ and 7 show a second embodiment of the invention, in which the receiving substrates 20, 20.1, ... are part of a substrate strip 23, in a schematic side view and top view.
  • the substrate arrangement 100 comprises the main substrate 10 for receiving the cell culture 3 and the substrate strip 23.
  • the main substrate 10 is arranged in a stationary manner in a cultivation device and z. B. on a wall 30 of a cultivation vessel (not shown) attached.
  • On the Main substrate 10 may be provided with an adhesion-reducing coating 14 (eg of PTFE, alginate, polysaccharides) to restrict the movement of cells towards the edge 11.
  • a depression 15 of the main substrate 10 serves to receive the cell culture 3.
  • the substrate tape 23 comprises a flexible material, e.g. As plastic, on the surface of the receiving substrates 20, 20.1 are formed.
  • the receiving substrates 20, 20. 1 comprise separate regions of the surface of the substrate strip 23.
  • the substrate strip 23 has a thickness of z. B. 250 microns and a width of z. B. 10 mm.
  • the receiving substrates 20, 20.1 are coated with various biologically active coatings, for. From laminin, fibronectin or other bioactive molecules used for specific adhesion of cells.
  • the substrate tape 23 is disposed in a substrate roll 24 below the main substrate 10.
  • the substrate belt 23 is guided past the substrate roller 24 via deflection rollers (not shown) on the edge 11 of the main substrate 10 in such a way that cells 1, 2 can migrate onto the respectively adjacent receiving substrate 20, 20.1.
  • the translational movement (see arrow) of the substrate strip 24 takes place, for example, at a speed in the range from 1 ⁇ m / h to 400 ⁇ m / h.
  • the band is switched on discontinuously more rapidly in order to create distances with less or without cell colonization.
  • the band can then be severed at these distances without damaging the remaining cells.
  • this is arranged on the main substrate 10. Due to the natural cell movement, the cells 1, 2 migrating out of the cell culture 3 move over the edge 11 onto the adjacent receiving substrate 20.
  • the substrate band 23 becomes relative to the receiving substrates 20, 20 moved to the edge 11 of the main substrate 10.
  • cell culture 3 comprising eg an organoid body or a tissue isolate
  • Further culture steps, treatments and / or examinations may be followed by separate cells.

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Abstract

La présente invention concerne un procédé permettant de collecter des cellules biologiques (1, 2) issues d'une culture cellulaire (3), lequel procédé consiste à mettre en culture la culture cellulaire sur un substrat principal (10), à transférer les cellules du substrat principal (10) sur au moins un substrat de collecte (20, 20.1, 20.2, 20.3, 20.4...), les cellules (1, 2) se déplaçant naturellement sur le ou les substrats de collecte (20, 20.1, 20.2, 20.3, 20.4...) et une mise en culture des cellules (1, 2) étant prévue sur le ou les substrats de collecte (20, 20.1, 20.2, 20.3,...), puis à séparer l'un de l'autre le substrat principal (10) et le ou les substrats de collecte (20, 20.1, 20.2, 20.3, 20.4...). L'invention concerne également un dispositif substrat (100) permettant de mettre à disposition des cellules biologiques (1, 2) d'une culture cellulaire (3).
EP08785094A 2007-08-02 2008-07-25 Procédé et dispositif permettant de collecter des cellules biologiques issues d'une culture de cellules souches Withdrawn EP2171035A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007036150A DE102007036150A1 (de) 2007-08-02 2007-08-02 Verfahren und Vorrichtung zur Aufnahme von biologischen Zellen aus einer Stammzellenkultur
PCT/EP2008/006141 WO2009015837A1 (fr) 2007-08-02 2008-07-25 Procédé et dispositif permettant de collecter des cellules biologiques issues d'une culture de cellules souches

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EP2171035A1 true EP2171035A1 (fr) 2010-04-07

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US (1) US20110020933A1 (fr)
EP (1) EP2171035A1 (fr)
DE (1) DE102007036150A1 (fr)
WO (1) WO2009015837A1 (fr)

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JP6391388B2 (ja) * 2014-09-24 2018-09-19 キヤノン株式会社 放射線撮像装置
US10000732B2 (en) * 2015-11-20 2018-06-19 National Health Research Institutes Microfluidic dual-well device for highthroughput single-cell capture and culture
EP4065687A4 (fr) * 2019-11-27 2024-04-10 Agency Science Tech & Res Dispositif d'étude topographique, et moules matriciels et procédés associés

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WO2004027017A1 (fr) * 2002-09-11 2004-04-01 Cytopharm Gmbh Procede pour le traitement de cultures cellulaires
WO2005001073A1 (fr) * 2003-06-23 2005-01-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procede pour differencier des cellules souches en cellules qui produisent une hormone pancreatique

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DE19714987C1 (de) * 1997-04-10 1998-09-24 Deutsches Krebsforsch Vorrichtung zur Isolation von Partikeln, insbesondere von Zellen
JP2000098258A (ja) * 1998-09-24 2000-04-07 Olympus Optical Co Ltd マイクロマニピュレータ
IL161426A0 (en) * 2001-11-30 2004-09-27 Bristol Myers Squibb Co Liquid interface configurations for automated patch clamp recording
DE10307487A1 (de) 2003-02-21 2004-09-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtungen zur verletzungsfreien Bewegung einer Sonde durch biologisches Zellmaterial
EP1747264B1 (fr) * 2004-05-21 2012-09-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Systemes de culture tissulaire et organique multicellulaires

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WO2004027017A1 (fr) * 2002-09-11 2004-04-01 Cytopharm Gmbh Procede pour le traitement de cultures cellulaires
WO2005001073A1 (fr) * 2003-06-23 2005-01-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procede pour differencier des cellules souches en cellules qui produisent une hormone pancreatique

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See also references of WO2009015837A1 *

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US20110020933A1 (en) 2011-01-27
DE102007036150A1 (de) 2009-02-05
WO2009015837A1 (fr) 2009-02-05

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