WO2016056512A1 - 細胞捕捉デバイス - Google Patents
細胞捕捉デバイス Download PDFInfo
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- WO2016056512A1 WO2016056512A1 PCT/JP2015/078211 JP2015078211W WO2016056512A1 WO 2016056512 A1 WO2016056512 A1 WO 2016056512A1 JP 2015078211 W JP2015078211 W JP 2015078211W WO 2016056512 A1 WO2016056512 A1 WO 2016056512A1
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- flow path
- introduction
- cell
- filter
- liquid
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Definitions
- the present invention relates to a cell trapping device for trapping specific cells that have entered a test solution with a filter.
- cancers called “malignant tumors” cause serious problems in maintaining the life of living organisms when they progress.
- various treatment methods have been studied.
- Metastasis is caused by cancer cells invading into blood vessels or lymphatic vessels, spreading through the body via these cells, and cancer cells moving to other organs. Therefore, the measurement of the presence and amount of cancer cells in the blood is important information for predicting cancer metastasis.
- Cancer cells circulating in a human body through such blood vessels or lymphatic vessels are called circulating tumor cells (CTC).
- Patent Document 1 discloses a manufacturing method using a filter semiconductor technology, the shape of a cell unit housing a filter, and the structure of a flow channel for flowing blood and processing liquid. Specifically, a configuration is shown in which cancer cells are captured by flowing blood containing cancer cells into a cell unit containing a filter, and cells existing on the filter are identified as cancer cells by staining. Yes.
- Patent Documents 2 and 3 a cell dispersion containing at least one of cancer cells and immune cells is allowed to pass through, and at least one of the cancer cells and the immune cells is subjected to physical action, chemical action and A body fluid treatment system including a cell treatment cartridge capable of imparting at least one kind of physiologically active action is disclosed.
- Patent Document 4 discloses a microfluidic device including a polydimethylsiloxane (PDMS) upper member having a sample supply port above and below a nickel substrate having a fine through hole in a nickel substrate, and a lower member having a sample discharge port. Is disclosed.
- PDMS polydimethylsiloxane
- Patent Documents 1 to 4 when the devices described in Patent Documents 1 to 4 are used, there is a concern that the efficiency of sample processing is significantly reduced and the measurement accuracy is lowered when air is mixed into the flow path of the device. In addition, there is a concern that foreign substances in the treatment liquid accumulate on the filter and hinder cell capture.
- the present invention has been made in view of the above, and in particular, it is possible to suppress the entry of air into the vicinity of a filter that captures cells and remove foreign substances in the liquid, and to perform processing related to cell capture with high reproducibility. It is an object to provide a possible cell trapping device.
- a cell trapping device includes one or more introductions for introducing a test solution containing cells or a treatment solution for processing cells in the test solution into the inside.
- a cell capturing device comprising: a housing portion that houses at least one
- the apparatus further comprises a pretreatment section that is provided on the introduction flow path at a position separated from the connection portion with the introduction area, and is formed by a space area having a diameter larger than the diameter of the introduction flow path.
- the pretreatment section By providing the pretreatment section in the introduction flow path, bubbles mixed in the treatment liquid flowing through the introduction flow path or the test liquid are separated and stored in the space area of the pretreatment section.
- the specific gravity of the bubbles is smaller than that of the liquid, the separated bubbles move to the upper part of the liquid and are stored. Therefore, it is possible to suppress the supply of the processing liquid or the test liquid in which bubbles are mixed toward the vicinity of the filter disposed downstream of the pretreatment unit, and to perform the processing related to the cell capture with high reproducibility.
- the pretreatment unit includes a second filter in which a plurality of through holes are formed in the thickness direction and the treatment liquid or the test liquid is disposed so as to pass through the through holes. be able to.
- the pretreatment unit includes the second filter, foreign matters in the liquid can be removed, so that it is possible to perform processing related to cell capture in the filter with high reproducibility.
- the second filter in the pretreatment unit, the effect of removing bubbles is improved, and the accuracy of the processing related to cell capture is also improved.
- the flow path between the space region and the introduction region may be configured to pass through the outside of the housing part.
- the structure inside the housing portion can be prevented from becoming complicated, and thus the manufacturing cost can be reduced. It becomes.
- the end of the introduction region can be curved. By making the end of the introduction region curved, it is possible to further prevent bubbles from being stored in the introduction region 51.
- a cell capture device capable of performing a process related to cell capture with high reproducibility.
- FIG. 1 is a diagram illustrating a configuration of a cell trapping apparatus including a cell trapping device according to the first embodiment.
- the cell capture device is a device that captures cells contained in blood by filtering blood, which is a test solution, with a filter.
- the cells captured by the filter are stained using a treatment liquid such as a staining liquid, thereby identifying the cells and counting the number of individual cells.
- a treatment liquid such as a staining liquid
- the test solution includes blood, lymph, and the like, and specific cells to be captured include rare cells such as CTC, circulating endothelial cells (CEC), and vascular endothelial precursor cells. (Circulating endogenous producer cells: CEP) and the like.
- a cell capture device 100 includes a cell capture device 1 in which a filter for capturing cells is provided, and a soft tube for supplying a treatment liquid (reagent) to the cell capture device 1. And a test liquid flow path 4 made of a soft tube for supplying blood to the cell trapping device 1 is provided.
- a plurality of processing liquid storage containers 5 in which different processing liquids (reagents) are placed are provided on the upstream side of the processing liquid flow path 3.
- the treatment liquid to be put into the treatment liquid storage container 5 includes a staining liquid for staining cells, a washing liquid for washing cells captured by a filter, and the like for protecting cells from degeneration, alteration, decay, etc. Examples thereof include a permeation solution for allowing a fixing solution and a staining solution to permeate cells.
- the plurality of treatment liquid storage containers 5 shown in FIG. 1 are sealed by a sealing member 5A, but this configuration is not particularly limited.
- a hard tube 6A connected to the soft tube 6 is inserted to form individual flow paths (processing liquid flow paths). These flow paths are connected to the selection valve 8, and the processing liquid to be connected to the processing liquid flow path 3 is selected by rotating the selection valve 8, and the selected processing liquid is accommodated.
- the hard tube 6A and the soft tube 6 inserted into the treated liquid storage container 5 and the treated liquid flow path 3 are connected.
- the structure of 6 A of hard tubes and the soft tube 6 can be changed suitably.
- a blood storage container 10 test solution storage container
- the cell capture device 1 is configured to supply either one of the treatment liquid and the blood instead of supplying the treatment liquid and the blood simultaneously. Control of which of the treatment liquid and blood is supplied is switched by valves 21 and 22 attached to the treatment liquid flow path 3 and the test liquid flow path 4, respectively. For example, when supplying blood to the cell capture device 1, the valve 21 is closed and the valve 22 is opened. As the valves 21 and 22, pinch valves that pressurize and deform the soft tube to block the flow can be used.
- the pump 24 has a structure capable of changing the flow rate of the liquid in the flow path by changing the rotation speed.
- a peristaltic pump (peristaltic pump) that sequentially moves a peristaltic point due to pressurization on a soft tube can be used.
- a liquid such as a processing liquid or blood flows in the direction toward the cell capturing device 1 through the processing liquid flow path 3 or the test liquid flow path 4 and is supplied to the cell capturing device 1.
- the liquid that has passed through the cell trapping device 1 flows into the waste liquid container 16 through the discharge channel 9.
- the cell trapping device 1 is provided with at least one pretreatment unit that performs pretreatment of the treatment solution or the test solution. Specifically, a first pretreatment unit that performs pretreatment of the treatment liquid is provided on the flow path connected to the treatment liquid flow path 3 that supplies the treatment liquid to the cell capture device 1, and blood is supplied to the cell capture device 1. A second pretreatment unit for pretreating the test liquid is provided on the flow path connected to the test liquid flow path 4 for supplying the test liquid. Details of the cell trapping device 1 will be described later.
- control unit 30 selection means
- the selection valve 8, the valves 21, 22, 23 and the pump 24 are driven according to instructions from the control unit 30.
- the control unit 30 is provided with a program input function for inputting a program that enables control such as driving and stopping for each of the above-described units.
- a drive mechanism that operates in order is added.
- the control unit 30 selection unit selects a line through which the liquid flows, and based on the selection result, the control unit 30 gives instructions to the respective units to open and close the valve and drive the pump (liquid supply unit). Is called.
- FIGS. 2 is an external perspective view of the cell trapping device
- FIG. 3 is a configuration diagram from the front of the cell trapping device
- FIG. 4 is a block diagram from the top of the cell trapping device
- 6 is an exploded perspective view of the cell trapping device.
- the cell trapping device 1 is configured such that a frame member 13 including a filter 11 having a plurality of through holes 12 is sandwiched between a lid member 50 and a storage member 60.
- the lid member 50 and the storage member 60 function as a housing part.
- the filter 11 is disposed in a space formed inside the lid member 50 and the storage member 60 when they are combined.
- the filter 11 is made of, for example, metal, and has a plurality of through holes 12 formed in the thickness direction.
- the size of the cell trapping device 1 is preferably such that the length of one side of the lid member 50 in a top view is 10 mm to 100 mm, more preferably 15 mm to 70 mm, and more preferably 20 mm to More preferably, it is 30 mm.
- the thickness is preferably 2 mm to 20 mm, more preferably 3 mm to 15 mm, and even more preferably 5 to 10 mm from the viewpoint of the movable range in the height direction of the observation instrument. Note that when the cell trapping device 1 is reinforced by being sandwiched by clips or the like, the thickness does not include the thickness of the clip.
- Examples of the material of the metal used for the filter 11 include, but are not limited to, gold, silver, copper, aluminum, tungsten, nickel, chromium, and alloys of these metals.
- the metal may be used alone, or may be used as an alloy with another metal or a metal oxide in order to impart functionality. From the viewpoint of price or availability, it is preferable to use nickel, copper, gold, and a metal containing these as a main component, and it is particularly preferable to use a metal containing nickel as a main component.
- the filter 57 is formed of a material mainly composed of nickel, it is preferable that the surface of nickel be plated with gold.
- the gold plating can prevent oxidation of the filter surface, the adhesion to specific cells to be captured (for example, CTC) becomes uniform, and the reproducibility of data can be improved.
- a non-metallic filter may be employed if the conditions are met.
- the thickness of the filter 11 is preferably 3 ⁇ m to 100 ⁇ m.
- the size of the region where the through hole 12 is provided in the filter 11 (which corresponds to the region through which the test solution or the processing solution can pass) is preferably 25 mm 2 to 1000 mm 2 . More preferably 25mm 2 ⁇ 400mm 2, more preferably 25mm 2 ⁇ 250mm 2.
- the size of the region where the through hole 12 is provided in the filter 11 exceeds 1000 mm 2 , the dead space increases. Further, if the size of the region where the through hole 12 is provided in the filter 11 is less than 25 mm 2 , the processing time becomes long, and problems such as filter blockage may occur.
- Examples of the opening shape of the through hole of the filter 11 include an ellipse, a circle, a rectangle, a square, a rounded rectangle, and a polygon, but are not limited thereto.
- a rounded rectangle refers to a rectangle with rounded corners. As an example of a rounded rectangle, it has two long sides of equal length and two semicircles, and a semicircular shape centered on the midpoint of the short side of the rectangle is provided outside the two short sides of the rectangle. Shape. Since the size varies depending on the type of cells to be captured, the diameter of the through hole of the filter 57 can be appropriately selected according to the type of cells to be captured.
- the frame member 13 provided around the filter 11 is not particularly limited as long as it is a member that can maintain hermeticity when sandwiched between the lid member 50 and the storage member 60.
- silicone rubber or the like is applied. can do.
- a caulking agent or the like may be applied as the frame member 13 from the viewpoint of maintaining sealing performance.
- the cell capture device 1 includes a treatment liquid side introduction flow path 31 connected to the treatment liquid flow path 3 formed of a soft tube, a test liquid side introduction flow path 41 connected to the test liquid flow path 4, and the like. Is formed. Further, the lid member 50 of the cell trapping device 1 communicates with the treatment liquid side introduction flow path 31 and the test liquid side introduction flow path 41 and is formed above the filter 11 so that the liquid is passed through the through hole 12 of the filter 11. An introduction region 51 is provided as a space for guiding. That is, in this embodiment, the “introduction channel” refers to the treatment liquid side introduction channel 31 and the test solution side introduction channel 41 provided in the cell trapping device 1 among the channels. The “treatment liquid channel” and the “blood channel” are the treatment solution channels connected to the upstream side of the treatment solution side introduction channel 31 and the test solution side introduction channel 41 of the cell trapping device 1, respectively. 3 indicates the test fluid flow path 4.
- a first pretreatment unit 70 for pretreatment of the treatment liquid is provided on the treatment liquid side introduction channel 31 for introducing the treatment liquid.
- a second pretreatment unit 80 for pretreatment of the test liquid is provided on the test liquid side introduction flow channel 41 for introducing the test liquid.
- the introduction flow path upstream of the first pretreatment section 70 is referred to as a treatment liquid side introduction flow path 31A
- the introduction flow path subsequent to the first pretreatment section 70 is referred to as a treatment liquid side introduction flow path 31B.
- the introduction flow path upstream of the second pretreatment section 80 is a test liquid side introduction flow path 41A
- the introduction flow path downstream of the second pretreatment section 80 is a test liquid side introduction flow path 41B.
- the storage member 60 is formed below the filter 11 and has a central portion deeper than the peripheral portion, and discharges the liquid that has passed through the through hole 12 of the filter 11 to the outside.
- a discharge area 61 serving as a space is provided.
- the storage member 60 is provided with a discharge channel 91 that communicates with the discharge region 61 and is connected to the discharge channel 9 and discharges the liquid in the discharge region 61 to the outside.
- the through-hole 12 provided in the filter 11 sandwiched between the lid member 50 and the storage member 60 has a size that prevents cells to be captured from passing through.
- the attachment positions of the treatment liquid flow path 3, the test liquid flow path 4 and the discharge flow path 9 with respect to the cell trapping device 1 are not limited to the positions shown in FIGS. That is, the treatment liquid flow path 3 and the test liquid flow path 4 do not need to be arranged to face each other.
- the treatment liquid flow path 3 and the test liquid flow path 3 on one of the four side surfaces constituting the cell trapping device 1 It is good also as a structure to which the to-be-tested liquid flow path 4 is connected. Moreover, it can also be set as the structure by which the process liquid flow path 3 and the test liquid flow path 4 are connected to an upper surface.
- the attachment position of the discharge channel 9 can be changed as appropriate.
- the mounting positions of the treatment liquid flow path 3, the test liquid flow path 4 and the discharge flow path 9 depend on the treatment liquid side introduction flow path 31, the test liquid side introduction flow path 41 and the discharge flow path 91 of the cell capture device 1. Therefore, the arrangement of the treatment liquid side introduction flow path 31, the test liquid side introduction flow path 41, and the discharge flow path 91 of the cell capture device 1 can be changed as appropriate. Further, the number of flow paths can be changed as appropriate.
- the pretreatment unit provided in the cell trapping device 1 will be further described.
- the pretreatment unit is provided to remove bubbles in the liquid flowing through the flow path.
- the test solution to be measured by the cell capturing device 1 is blood or the like, it is required to accurately measure with a smaller amount of the test solution. Further, when bubbles are mixed in the test solution or the processing solution, the accuracy of the volume introduced into the device is lowered. In addition, when bubbles remain on the filter, the introduction region 51 on the filter cannot be fully utilized, and it may be difficult to appropriately capture cells in the filter 11.
- a pretreatment unit is provided on each of the treatment liquid side introduction flow path 31 and the test liquid side introduction flow path 41, and bubbles are formed in a stage before the introduction region where the filter 11 is provided. It was set as the structure which removes. Note that the preprocessing unit is provided upstream of the introduction region where the filter 11 is provided, and is provided apart from the introduction region. That is, the pretreatment section and the introduction area are connected by a flow path having a smaller diameter than these areas. It is necessary to replace the filter and the pretreatment unit for each measurement of one test liquid.
- the filter 11 for capturing cells inside the cell capturing device 1 by including the filter 11 for capturing cells inside the cell capturing device 1 and the pretreatment unit for pretreating the test solution or the treatment solution, the measurement of a plurality of test solutions is continuously performed. It is possible to dramatically improve the efficiency of work when performing. Further, the cell trapping device can be made more compact.
- the first pretreatment unit 70 is formed as a spatial region formed by the lid member 50 and the storage member 60.
- the first pretreatment unit 70 is characterized in that its diameter is larger than that of the treatment liquid side introduction flow path 31.
- the first pretreatment unit 70 is larger than the flow path diameter of the larger flow path. The diameter is set to be large.
- the first pretreatment unit 70 is changed according to the volume so that the bubbles can stay in the first pretreatment unit 70, and the volume of the first pretreatment unit 70 is one.
- the volume is preferably 2 times or more of the volume of bubbles, and more preferably 5 times or more.
- the diameter of the treatment liquid side introduction flow path 31A is 1 mm
- the length of bubbles in the flow path may be about 1 mm to 3 mm.
- the volume of the first pretreatment unit 70 is preferably 10 mm 3 or more.
- the first pretreatment unit 70 it is preferable that a space region for storing bubbles is formed above the treatment liquid side introduction flow path 31B that is an outlet of the treatment liquid.
- an upstream processing liquid side introduction flow path 31 ⁇ / b> A is provided above the first pretreatment section 70, and the processing liquid is introduced into the first pretreatment section 70 from the processing liquid side introduction flow path 31 ⁇ / b> A.
- a processing liquid side introduction flow path 31 ⁇ / b> B is provided below the first pretreatment unit 70. That is, the processing liquid moves from the upper side to the lower side in the first pretreatment unit 70.
- the first pretreatment unit 70 is provided at a position above the inlet to the treatment liquid side introduction flow channel 31B, the treatment liquid remains from the first pretreatment unit 70 while containing bubbles. Inflow to the side introduction flow path 31B is suppressed.
- the inlet to the introduction region 51 of the treatment liquid side introduction flow path 31B (the outlet of the treatment liquid side introduction flow path 31B) and the first pretreatment unit 70 of the treatment liquid side introduction flow path 31A.
- the introduction port (exit of the treatment liquid side introduction flow path 31A) has substantially the same height. Accordingly, the outlet provided in the lid member 50 side of the processing liquid side introduction flow path 31B subsequent to the first pretreatment unit 70 is higher than the inlet provided in the storage member 60 side. Therefore, the treatment liquid side introduction flow path 31B is formed by an opening that allows the storage member 60, the frame member 13, and the lid member 50 to communicate with each other (see FIG. 3).
- the formation method of the process liquid side introduction flow path 31B is not specifically limited, For example, it manufactures by providing the structure corresponding to a flow path in the metal mold
- the flow path may be formed by closing a part of the through hole with a plug after providing the through hole.
- the second preprocessing unit 80 is also provided in the same manner as the first preprocessing unit 70. That is, the second pretreatment unit 80 is formed as a space region formed by the lid member 50 and the storage member 60. In addition, an outlet of the upstream test liquid side introduction channel 41A (introduction port to the second pretreatment unit) is provided above the second pretreatment unit 80, and the second from the test solution side introduction channel 41A. A treatment liquid is introduced into the pretreatment unit 80. Further, a test solution side introduction flow channel 41B is provided below the second pretreatment unit 80.
- test solution side introduction flow path 41B An inlet to the introduction region 51 of the test solution side introduction flow channel 41B (an outlet of the test solution side introduction flow channel 41B) and an introduction port to the second pretreatment unit 80 of the test solution side introduction flow channel 41A ( The outlet of the test solution side introduction flow path 41A is substantially the same height. Therefore, in the test solution side introduction flow channel 41 ⁇ / b> B subsequent to the second pretreatment unit 80, the outlet provided on the lid member 50 side is higher than the inlet provided on the storage member 60 side. Therefore, the test solution side introduction flow path 41B is formed by an opening that allows the storage member 60, the frame member 13, and the lid member 50 to communicate with each other (see FIG. 3).
- the arrangement and shape of the treatment liquid side introduction flow paths 31A and 31B and the test liquid side introduction flow paths 41A and 41B are the same as the arrangement of the introduction region 51 that becomes a space for guiding the liquid to the through hole 12 of the filter 11. Since it is determined by the arrangement of the first preprocessing unit 70 and the second preprocessing unit 80, it can be changed as appropriate.
- the cell trapping device 1 is configured by overlapping the lid member 50 and the storage member 60 with the frame member 13 including the filter 11 interposed therebetween. At this time, after aligning each member, it is good also as a structure which fixes these from the outer peripheral side with a clip etc., It is good also as a structure fixed by thermocompression bonding etc. Then, the treatment liquid flow path 3, the test liquid flow path 4, and the discharge flow path 9 are connected to the treatment liquid side introduction flow path 31, the test liquid side introduction flow path 41, and the discharge flow path 91, respectively. Is attached to the cell capturing device 100.
- the processing liquid supplied from the processing liquid storage container 5 is supplied to the introduction region 51 of the filter 11 through the first pretreatment unit 70 of the cell trapping device 1.
- the bubbles in the processing liquid stay above the first pretreatment unit 70, the bubbles are removed from the processing liquid.
- the treatment liquid from which the bubbles are removed passes through the treatment liquid side introduction flow path 31B in the cell trapping device 1, passes through the introduction region 51, the filter 11, and the discharge region 61, and is discharged out of the cell capture device 1 from the discharge flow passage 91.
- the blood supplied from the blood storage container 10 is supplied to the introduction region 51 of the filter 11 through the second pretreatment unit 80 of the cell trapping device 1.
- the bubbles in the processing liquid stay above the second pretreatment unit 80, the bubbles are removed from the processing liquid.
- the treatment liquid from which the bubbles have been removed passes through the test solution side introduction flow channel 41B in the cell capture device 1 and passes through the introduction region 51, the filter 11 and the discharge region 61, and is discharged from the discharge flow channel 91 to the outside of the cell capture device 1. Is done.
- the inside of each of these apparatuses and the flow path provided for connecting them are preliminarily filled with a washing solution, physiological saline, pure water, or the like. It is preferable to use it.
- the first pretreatment unit 70 is provided on the treatment liquid side introduction flow path 31, and the second pretreatment unit 80 is provided on the test liquid side introduction flow path 41.
- the process liquid or test liquid side which flows through the process liquid side introduction flow path 31 by the internal pressure of a process liquid or a test liquid falling temporarily.
- Bubbles mixed in the test liquid flowing through the introduction channel 41 are separated and stored in the space region of the pretreatment unit.
- the specific gravity of the bubbles is smaller than that of the liquid, the separated bubbles move to the upper part of the liquid and are stored.
- the first pretreatment unit 70 and the second pretreatment unit 80 are separated from the connection portion with the introduction region where the filter 11 is provided, so that the separated bubbles Is suppressed from flowing to the introduction region 51 side, it is possible to perform the processing related to cell capture with high reproducibility.
- the introduction region 51 and the discharge region 61 where the filter 11 is provided, the first pretreatment unit 70, and the second pretreatment unit 80 are the same casing (the lid member 50 and the housing). It is the structure accommodated in the member 60). In this case, the lengths of the treatment liquid side introduction flow path 31 and the test liquid side introduction flow path 41 can be further shortened.
- the flow path is configured to be long, it is conceivable that the amount of liquid necessary for measurement increases as a result.
- the pretreatment unit in which the pretreatment unit is integrated, it is possible to prevent the flow path from becoming long due to the provision of the pretreatment unit. Moreover, since the increase in the number of parts by providing a pre-processing part can be prevented, handling property also improves. Furthermore, compared with the case where the pre-processing unit is a separate configuration, the cost for providing the pre-processing unit can also be suppressed.
- the end portion (the boundary portion between the side surfaces and the boundary portion between the side surface and the top surface) in the introduction region 51 above the filter is curved. preferable. If there are corners at these parts, bubbles may remain. Therefore, it is possible to further prevent bubbles from being stored in the introduction region 51 by making the end portion on the upper side of the introduction region 51 curved.
- FIGS. 7 is an external perspective view of the cell trapping device
- FIG. 8 is a configuration diagram from the front of the cell trapping device
- FIG. 9 is a block diagram from the top of the cell trapping device.
- 11 is an exploded perspective view of the cell trapping device.
- the cell capture device 1A according to the second embodiment is different from the cell capture device according to the first embodiment in the following points. That is, the processing liquid side introduction flow path 31B between the first pretreatment section 70 and the introduction area 51 and the test liquid side introduction flow path 41B between the second pretreatment section 80 and the introduction area 51 are provided.
- a foreign matter removal filter (second filter) is provided in the first pretreatment unit 70 and the second pretreatment unit 80 in that the body member is protruded outward from the lid member 50 and the storage member 60. This is different from the cell capturing device 1 according to the first embodiment.
- the cell trapping device according to the first embodiment can realize a more compact shape because the flow path is provided inside the casing.
- the internal flow path configuration may be complicated, the manufacturing cost may increase.
- the cell capturing device according to the second embodiment has a configuration in which the processing liquid side introduction channel 31B and the test solution side introduction channel 41B pass through the outside of the casing unit, thereby reducing the manufacturing cost of the casing unit. Reduction is being achieved.
- the treatment liquid side introduction flow path 31B and the test liquid side introduction flow path 41B are configured to be removable by passing through the outside, the operability is improved.
- the treatment liquid side introduction flow path 31B and the test liquid side introduction flow path 41B protrude outward from the lid member 50 and the storage member 60.
- the attachment positions of the treatment liquid side introduction flow path 31B and the test liquid side introduction flow path 41B (connection positions with respect to the first pretreatment section 70, the second pretreatment section 80, and the introduction area 51) are the same as those of the cell trapping device 1. is there.
- the treatment liquid side introduction flow path 31B and the test liquid side introduction flow path 41B may be constituted by, for example, a silicone tube or the like, or may be constituted by a metal tube or the like.
- the treatment liquid side introduction flow path 31B and the test liquid side introduction flow path 41B are made of a flexible material such as a silicone tube, for example, the treatment liquid side introduction flow path 31B and the test liquid side introduction flow path It can also be set as the structure which provides the valve mechanism etc. which press 41B from the outside. Further, the treatment liquid side introduction flow path 31 ⁇ / b> B and the test liquid side introduction flow path 41 ⁇ / b> B projecting to the outside can be configured to be removable from the casing portion constituted by the lid member 50 and the storage member 60. In this case, a configuration is adopted in which only the housing portion including the filter 11 is removed from the measuring apparatus, and the processing liquid side introduction flow path 31B and the test liquid side introduction flow path 41B are attached to the apparatus side. Is also possible.
- the treatment liquid side introduction channel 31B can be provided outside the cell capture device 1.
- a fluid circuit equivalent to the treatment liquid side introduction flow path 31B can be provided on the apparatus side where the cell trapping device 1 is attached.
- the first pretreatment unit 70 and the second pretreatment unit 80 are provided with foreign matter removal filters 75 and 85, respectively.
- the plurality of through holes that are formed in the thickness direction of the foreign matter removal filter 85 and are arranged so that the test liquid can pass are sufficiently larger than the hole diameter of the filter 11 and do not capture the cells to be captured. It is preferable that In this case, it is possible to suitably remove only the foreign matter in the test solution, and it is possible to prevent erroneous capture of the cells to be captured.
- the foreign matter removal filter 75 arranged so that the treatment liquid passes through the plurality of through holes is not particularly limited in the hole diameter and the like, as long as the foreign matter in the treatment liquid can be removed. It is preferable that foreign matters having such a size as to interfere are removed in advance. That is, it is preferably equal to or smaller than the pore size of the filter that captures cells.
- the metal material used for the foreign matter removing filters 75 and 85 include, but are not limited to, gold, silver, copper, aluminum, tungsten, nickel, chrome, and alloys of these metals.
- the metal may be used alone, or may be used as an alloy with another metal or a metal oxide in order to impart functionality. From the viewpoint of price or availability, it is preferable to use nickel, copper, gold, and a metal containing these as a main component, and it is particularly preferable to use a metal containing nickel as a main component. Further, when the foreign matter removing filters 75 and 85 are formed of a material containing nickel as a main component, it is preferable that the nickel surface is gold-plated.
- the oxidation of the filter surface can be prevented by the gold plating, the foreign matter removal performance can be maintained high. It is also preferable to coat the surface of the filter with a polymer that is harmless to cells. However, in this case, adhesion to cells is not required.
- the first pretreatment unit 70 and the second pretreatment unit 80 can remove foreign matters. 11 can be performed with high reproducibility. Further, by providing the foreign matter removal filters 75 and 85 in the first pretreatment unit 70 and the second pretreatment unit 80, the effect of removing bubbles in the first pretreatment unit 70 and the second pretreatment unit 80 is also improved. This is considered that separation of bubbles is promoted by the foreign matter removal filters 75 and 85 when the processing liquid or the test solution passes through the foreign matter removal filters 75 and 85. Therefore, when the foreign matter removal filters 75 and 85 are provided, the effect of removing bubbles is improved, and the accuracy of processing related to cell capture is also improved.
- the filter 11 and the foreign matter removal filters 75 and 85 are constituted by a single sheet 11A, and the frame member 13 is provided on the outer periphery of the sheet 11A (FIG. 10).
- the filter 11 and the foreign matter removal filters 75 and 85 are configured can be changed as appropriate.
- the sheet 11A is configured as described above, the first pretreatment unit 70, the second pretreatment unit 80, the introduction region 51, and the discharge region 61 are connected on the upper surface side or the lower surface side of the sheet 11A. It is good also as a structure which arrange
- FIG. 12 is a view showing a modified example of the configuration of the filter portion in the cell trapping device 1.
- a filter 11B having through-holes 12 and foreign matter removing filters 75A and 85A are provided for a frame member 13A provided with three openings for filters.
- FIGS. 13 is a configuration diagram from the front of the cell trapping device
- FIG. 14 is a configuration diagram from the top of the cell trapping device
- FIGS. 15 and 16 are exploded perspective views of the cell trapping device.
- the cell capture device 1B according to the third embodiment is different from the cell capture device according to the first embodiment in the following points. That is, it is different from the cell capturing device 1 according to the first embodiment in that the second pretreatment unit 80 is not provided.
- the test solution side introduction flow channel 41 is directly connected to the introduction region 51 without passing through the second pretreatment unit. For this reason, the test liquid is introduced from the test liquid flow path 4 to the introduction region 51 without passing through the second pretreatment unit or the like.
- the pretreatment is not necessary for the test solution because air bubbles are sufficiently removed.
- the second pretreatment unit is not provided as in the cell trapping device 1B, the flow path can be further shortened, and the amount of the test solution used can be reduced.
- a pretreatment unit may be provided only on a part of the introduction channels. Even in such a case, since the bubbles from the liquid that has passed through the pretreatment unit can be removed, reproducibility can be improved with respect to cell capture.
- the cell capture device which concerns on this invention is not limited to the above, A various change can be performed.
- the case where the cell capturing device 1 is configured by the lid member 50 and the storage member 60 has been described.
- the shape of the casing unit configured by the lid member 50 and the storage member 60 is appropriately changed. can do.
- the number of introduction flow paths should just be one or more, and is not specifically limited.
- a valve or the like may be further provided on the treatment liquid side introduction flow path, the test liquid side introduction flow path, and the discharge flow path of the cell trapping device 1 to control the liquid flow in the device.
- DESCRIPTION OF SYMBOLS 1 ... Cell capture device 5 ... Processing liquid storage container, 10 ... Blood storage container (test liquid storage container), 11 ... Filter, 31 ... Processing liquid side introduction flow path, 41 ... Test liquid side introduction flow path, 50 DESCRIPTION OF SYMBOLS ... Lid member 51 ... Introduction
- acquisition apparatus 5 ... Processing liquid storage container, 10 ... Blood storage container (test liquid storage container), 11 ... Filter, 31 ... Processing liquid side introduction flow path, 41 ... Test liquid side introduction flow path, 50 DESCRIPTION OF SYMBOLS ... Lid member 51 ... Introduction
- acquisition apparatus 5
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Abstract
Description
図1は第1実施形態に係る細胞捕捉デバイスを含む細胞捕捉装置の構成を説明する図である。細胞捕捉装置は、被検液である血液をフィルタによってろ過することで血液中に含まれる細胞を捕捉する装置である。また、フィルタにより捕捉された細胞について、染色液等の処理液を用いて染色することで、細胞の特定及び細胞の個体数のカウント等が行われる。以下の実施形態では、被検液が血液であり、捕捉対象となる細胞が血中循環がん細胞(Circulating Tumor Cell:CTC)である場合について説明するが、この点については限定されない。例えば、被検液としては、血液、リンパ液等が挙げられ、捕捉対象となる特定の細胞としては、CTCを始めとする希少細胞、循環内皮細胞(Circulating endothelial cells:CEC)、血管循環内皮前駆細胞(Circulating endothelial progenitor cells:CEP)等が挙げられる。
次に、第1実施形態に係る細胞捕捉デバイス1について、図2~図6を用いて説明する。図2は、細胞捕捉デバイスの外観斜視図であり、図3は、細胞捕捉デバイスの正面からの構成図であり、図4は、細胞捕捉デバイスの上面からの構成図であり、図5及び図6は、細胞捕捉デバイスの分解斜視図である。
次に、第2実施形態に係る細胞捕捉デバイスについて、図7~図11を参照しながら説明する。図7は、細胞捕捉デバイスの外観斜視図であり、図8は、細胞捕捉デバイスの正面からの構成図であり、図9は、細胞捕捉デバイスの上面からの構成図であり、図10及び図11は、細胞捕捉デバイスの分解斜視図である。
次に、第3実施形態に係る細胞捕捉デバイスについて、図13~図16を参照しながら説明する。図13は、細胞捕捉デバイスの正面からの構成図であり、図14は、細胞捕捉デバイスの上面からの構成図であり、図15及び図16は、細胞捕捉デバイスの分解斜視図である。
Claims (4)
- 細胞を含む被検液又は被検液中の細胞を処理するための処理液を内部に導入するための1以上の導入流路と、
前記被検液又は前記処理液を外部に排出するための排出流路と、
複数の貫通孔が厚み方向に形成されて、前記導入流路と前記排出流路との間の流路上に前記被検液又は前記処理液が該貫通孔を通過するように配置されたフィルタと、
前記導入流路と前記排出流路との間の流路上にあって前記フィルタと前記導入流路の間に形成される導入領域と、
前記フィルタと前記排出流路との間に形成される排出領域と、
前記導入流路の少なくとも一部と、前記導入領域と、前記排出領域とを内部に収容する筐体部と、を備える細胞捕捉デバイスであって、
少なくとも1つの前記導入流路上であって前記導入領域との接続部分とは離間した位置に設けられ、前記導入流路の径よりもその径が大きな空間領域により形成された前処理部を更に備える細胞捕捉デバイス。 - 前記前処理部は、複数の貫通孔が厚み方向に形成されて、前記処理液又は前記被検液が該貫通孔を通過するように配置された第2のフィルタを備える請求項1に記載の細胞捕捉デバイス。
- 前記空間領域と前記導入領域との間の流路が前記筐体部の外方を経由していることを特徴とする請求項1又は2に記載の細胞捕捉デバイス。
- 前記導入領域の端部が湾曲していることを特徴とする請求項1~3のいずれか一項に記載の細胞捕捉デバイス。
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SG11201702864QA SG11201702864QA (en) | 2014-10-08 | 2015-10-05 | Cell-capturing device |
EP15849728.9A EP3205712A4 (en) | 2014-10-08 | 2015-10-05 | Cell-capturing device |
US15/517,926 US20170356898A1 (en) | 2014-10-08 | 2015-10-05 | Cell-capturing device |
CN201580054224.3A CN107109332A (zh) | 2014-10-08 | 2015-10-05 | 细胞捕获器件 |
JP2016553097A JP6164375B2 (ja) | 2014-10-08 | 2015-10-05 | 細胞捕捉デバイス |
KR1020177011703A KR20170066512A (ko) | 2014-10-08 | 2015-10-05 | 세포 포착 디바이스 |
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2015
- 2015-10-05 CN CN201580054224.3A patent/CN107109332A/zh active Pending
- 2015-10-05 SG SG11201702864QA patent/SG11201702864QA/en unknown
- 2015-10-05 JP JP2016553097A patent/JP6164375B2/ja not_active Expired - Fee Related
- 2015-10-05 WO PCT/JP2015/078211 patent/WO2016056512A1/ja active Application Filing
- 2015-10-05 KR KR1020177011703A patent/KR20170066512A/ko unknown
- 2015-10-05 EP EP15849728.9A patent/EP3205712A4/en not_active Withdrawn
- 2015-10-05 US US15/517,926 patent/US20170356898A1/en not_active Abandoned
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EP3205712A1 (en) | 2017-08-16 |
EP3205712A4 (en) | 2018-05-09 |
KR20170066512A (ko) | 2017-06-14 |
SG11201702864QA (en) | 2017-06-29 |
US20170356898A1 (en) | 2017-12-14 |
CN107109332A (zh) | 2017-08-29 |
JP6164375B2 (ja) | 2017-07-19 |
JPWO2016056512A1 (ja) | 2017-07-06 |
TW201619369A (zh) | 2016-06-01 |
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