JP7226738B2 - Container for cell concentration - Google Patents

Container for cell concentration Download PDF

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JP7226738B2
JP7226738B2 JP2019064476A JP2019064476A JP7226738B2 JP 7226738 B2 JP7226738 B2 JP 7226738B2 JP 2019064476 A JP2019064476 A JP 2019064476A JP 2019064476 A JP2019064476 A JP 2019064476A JP 7226738 B2 JP7226738 B2 JP 7226738B2
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container
cell
cell concentration
cells
concentrate
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JP2020162447A (en
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義久 鈴木
薫 尾前
博史 井川
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Fukoku Co Ltd
Shiga University of Medical Science NUC
Foundation for Biomedical Research and Innovation at Kobe
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Fukoku Co Ltd
Shiga University of Medical Science NUC
Foundation for Biomedical Research and Innovation at Kobe
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M1/00Apparatus for enzymology or microbiology
    • C12M1/26Inoculator or sampler

Description

本発明は細胞懸濁液を収容して遠心分離により濃縮する細胞濃縮用容器に関する。 TECHNICAL FIELD The present invention relates to a container for cell concentration in which a cell suspension is accommodated and concentrated by centrifugation.

従来、細胞懸濁液を収容して遠心分離する必要があることから、強度が得やすい硬質容器が多用されていたが、可撓性容器を用いて遠心分離する技術も知られている。
例えば下記特許文献1では、一部又は全部が可撓性を有する容器本体に、大きな容積の第1の収容部と、遠心沈殿物を収容するための小さな容積の第2の収容部とを設けた遠心分離用容器が提案されている。この遠心分離用容器では、第1の収容部の上部にポート部が設けられていて、遠心分離後に第1の収容部と第2の収容部との境界部分の容器壁を外側から密着させることで、ポート部と第2の収容部を非連通状態にして、第2の収容部の細胞を分離したり洗浄したりしていた。
このような容器では、第2の収容部に収容された分離後の目的細胞を第2の収容部から回収するような場合に、容器に変形等が生じると、手間を要するものであった。
Conventionally, since it is necessary to store a cell suspension and perform centrifugal separation, a hard container that is easy to obtain strength has been used in many cases, but a technique of centrifuging using a flexible container is also known.
For example, in Patent Document 1 below, a container body having flexibility partially or entirely is provided with a large-capacity first container and a small-capacity second container for containing centrifugal sediment. A centrifugation vessel has been proposed. In this container for centrifugation, the port portion is provided in the upper portion of the first containing portion, and the container wall at the boundary portion between the first containing portion and the second containing portion is brought into close contact with the outside after centrifugation. In this case, the port and the second container are placed in a state of non-communication to separate or wash the cells in the second container.
In such a container, if the container is deformed or the like, it is troublesome to collect the separated target cells from the second container from the second container.

下記特許文献2では、有核細胞と不要細胞とを含む細胞含有液から不要細胞を分離して回収バッグに有核細胞を回収し、または濃縮することが行われていた。この文献では、高遠心力で遠心分離するとともにフィルタによるろ過を用いて分離した後でコニカルチューブなどに移し、さらに遠心分離して単核球が回収されていた。そのため容器の移し替えなどに手間を要していた。 In Patent Document 2 below, unnecessary cells are separated from a cell-containing liquid containing nucleated cells and unnecessary cells, and the nucleated cells are collected in a collection bag or concentrated. In this document, mononuclear cells are recovered by centrifuging with a high centrifugal force and separating using filtration with a filter, transferring to a conical tube or the like, and further centrifuging. Therefore, it took time and effort to transfer the container.

下記特許文献3では、血液の血漿成分、白血球、赤血球等の分離精度を高めるために遠心分離器にかける血液バッグにおいて、容器の上端や下端、更には中腹にチューブを接続して各成分を分離して各チューブから流出させていた。そのため少量の成分の場合には、容器内や回収するまでの経路などに残留して無駄が生じ易かった。 In Patent Document 3 below, in a blood bag that is centrifuged to increase the separation accuracy of blood plasma components, white blood cells, red blood cells, etc., tubes are connected to the upper and lower ends of the container, and further to the middle of the container to separate each component. and let it flow out of each tube. Therefore, in the case of a small amount of the component, it tends to be wasteful because it remains in the container or in the route until it is collected.

さらに、下記特許文献4では、容量部Aと容量部Bからなり、容量部Aの下部に容量部Bがあり、容量がA>Bで、容量部Aと容量部Bが容易に分離又は分断可能に設けられた遠心分離用容器が提案されている。しかしながら、この遠心分離容器をバッグから分離した容量部Bの細胞をシリンジ等で取り出すようにしているため、分離後の細胞を回収するのに手間を要していた。 Furthermore, in Patent Document 4 below, a capacitor portion A and a capacitor portion B are provided, the capacitor portion B is located below the capacitor portion A, the capacitance is A>B, and the capacitor portion A and the capacitor portion B can be easily separated or divided. A possible centrifuge container has been proposed. However, since the cells in the volume part B separated from the bag of the centrifugation container are taken out with a syringe or the like, it takes time and effort to recover the separated cells.

特開2011-125813号公報JP 2011-125813 A 国際公開WO2005/035737号公報International publication WO2005/035737 特開平08-82621号公報JP-A-08-82621 特開2008-220319号公報JP 2008-220319 A

以上のように、上記何れの技術であっても、可撓性を有する容器を用いて遠心分離により沈降する細胞を回収したり濃縮したりする従来のシステムでは、容器の移し替えなどの際に手間を要したり、無駄が生じたりし易かった。 As described above, in any of the above techniques, in a conventional system that uses a flexible container to collect and concentrate cells sedimented by centrifugation, when the container is transferred, etc. It was easy to take time and waste.

そこで本発明では、簡易な構造で閉鎖系を保ちつつ細胞濃縮を行うことができるとともに、細胞濃縮液を容易に無駄なく抜き取りし易い細胞濃縮用容器を提供することを目的とする。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a container for cell concentration that has a simple structure and allows cell concentration to be performed while maintaining a closed system, and from which the cell concentrate can be easily drawn out without waste.

上記目的を達成する本発明の細胞濃縮用容器は、可撓性の容器本体の一端部に排出部を有し、目的細胞を含有する細胞懸濁液が密封状態で収容されて遠心分離されることで、一端側に目的細胞が沈降して細胞濃縮液が生成される細胞濃縮用容器であって、容器本体は、第1収容部と、第1収容部の一端側の底部に第1収容部と連通して設けられて細胞濃縮液が貯留される第2収容部と、を有し、第1収容部の一端側には、第1収容部の軸に沿って幅が縮小する縮小部が設けられることで底部第2収容部側に向けて下り勾配に形成され、第2収容部は、クリップにより外側から圧迫して密封可能であるとともに閉塞されないように曲げることが可能な可撓性チューブにより形成され、接合部を介して第1収容部の縮小部の端部に接合され、接合部は、成形体からなり、第1収容部の内側に収容されて気密に接合されるとともに第1収容部の軸方向に突出した筒部に第2収容部が外嵌して気密に接合され、排出部は、第2収容部の一端部に流路を有する硬質部材を備えていて、流路が抜取具を貫通させて細胞濃縮液を抜き取り可能な弾性部材により閉塞されていることを特徴としている。
本発明では、排出部は、弾性部材を貫通した抜取具の先端開口が弾性部材の隣接位置に配置されるように、抜取具を当接させて抜取具の挿入位置を規制可能に構成されていてもよい。
本発明では、目的細胞が単核球であって、該単核球を含有する細胞懸濁液から単核球を濃縮する細胞濃縮用容器であってもよい。
The container for cell concentration of the present invention, which achieves the above object, has a discharge part at one end of a flexible container body, and a cell suspension containing target cells is accommodated in a sealed state and centrifuged. Thus, in the cell concentration container in which the target cells are sedimented on one end side and the cell concentrate is produced, the container main body includes the first container and the first container at the bottom of the one end side of the first container. a second storage portion provided in communication with the portion and in which the cell concentrate is stored , and a reduced portion whose width is reduced along the axis of the first storage portion on one end side of the first storage portion. is provided, the bottom part is formed downwardly toward the second housing part side, and the second housing part can be sealed by pressing it from the outside with a clip, and can be bent so as not to be closed. It is formed of a sex tube and is joined to the end of the contracted portion of the first accommodation portion via a joining portion, the joining portion is made of a molded body, and is housed inside the first accommodation portion and joined airtightly. The second housing portion is fitted over and airtightly joined to the cylindrical portion protruding in the axial direction of the first housing portion, and the discharge portion includes a hard member having a flow path at one end of the second housing portion, The channel is characterized in that it is blocked by an elastic member that allows the extractor to penetrate and extract the concentrated cell solution.
In the present invention, the discharge part is configured to allow the extraction tool to come into contact and regulate the insertion position of the extraction tool so that the tip opening of the extraction tool passing through the elastic member is arranged at a position adjacent to the elastic member. may
In the present invention, the target cells are mononuclear cells, and a cell concentration container for concentrating mononuclear cells from a cell suspension containing the mononuclear cells may be used.

本発明の細胞濃縮用容器は、弾性部材にスリットが設けられているのが好適である。
上記目的を達成する本発明の細胞濃縮方法は、上記の細胞濃縮用容器を用いた細胞濃縮方法であって、細胞濃縮用容器に細胞懸濁液を収容して密封し、第1収容部の側周面を支持する内周面と、第1収容部の縮小部を支持する傾斜面と、第2収容部及び排出部を配置する内部配置部と、を有するアダプタに細胞濃縮用容器を支持させて遠心分離機に装着し、遠心分離を行って第2収容部に細胞濃縮液を生成させ、第2収容部内の細胞濃縮液を抜取具の先端開口を弾性部材の隣接位置に配置して抜き取ることで細胞濃縮液を得ることを特徴としている。
本発明の細胞濃縮方法では、目的細胞が単核球であって、この単核球を含有する細胞懸濁液から単核球を濃縮してもよい。
It is preferable that the cell concentration container of the present invention is provided with a slit in the elastic member.
The cell concentration method of the present invention for achieving the above object is a cell concentration method using the above cell concentration container, wherein the cell suspension is contained in the cell concentration container and sealed, and the first container is The cell concentration container is supported by the adapter having an inner peripheral surface that supports the side peripheral surface, an inclined surface that supports the contracted portion of the first accommodating portion, and an internal arrangement portion that arranges the second accommodating portion and the discharge portion. and attach it to a centrifuge, perform centrifugation to generate a concentrated cell solution in the second container, and dispose the concentrated cell solution in the second container so that the tip opening of the extraction tool is adjacent to the elastic member. It is characterized by obtaining a cell concentrate by extracting.
In the cell enrichment method of the present invention, the target cells are mononuclear cells, and the mononuclear cells may be enriched from the cell suspension containing the mononuclear cells.

本発明の細胞濃縮用容器によれば、容器本体が可撓性を有するので、密封状態で容積を増減でき、簡易な構造で閉鎖系を保ちつつ細胞濃縮のための各操作を行うことができる。
そして、容器本体には、第1収容部の一端側の底部に第2収容部が連通して設けられ、第1収容部の一端側の底部が第2収容部側に下り勾配で形成され、さらに第2収容部の一端部に排出部が設けられて先端から細胞濃縮液を抜き取り可能に閉塞されている。
そのため、遠心分離により目的細胞が一端側に沈降して集まることで、第2収容部における排出部の先端から抜き取り易い位置に細胞濃縮液が生成される。従って、この細胞濃縮液を直接無駄なく抜き取ることができる。しかも、細胞濃縮液を第2収容部、すなわち、細胞濃縮液の集積部位の先端から抜き取るため、可撓性で変形し易い容器本体であっても変形を抑えて抜き取り操作を行い易い。
よって、本発明にあっては、簡易な構造で閉鎖系を保ちつつ細胞濃縮を行うことができるとともに、細胞濃縮液を容易に無駄なく確実に抜き取ることが可能な細胞濃縮用容器を提供することができる。
According to the container for cell concentration of the present invention, since the container body has flexibility, the volume can be increased and decreased in a sealed state, and each operation for cell concentration can be performed while maintaining a closed system with a simple structure. .
Then, the container body is provided with a second storage portion communicating with a bottom portion on one end side of the first storage portion, and the bottom portion on one end side of the first storage portion is formed with a downward slope toward the second storage portion side, Furthermore, a discharge part is provided at one end of the second storage part and is closed so that the cell concentrate can be extracted from the tip.
Therefore, the target cells are sedimented and collected at one end side by centrifugation, and a cell concentrate is generated at a position where it is easy to extract from the tip of the discharge section in the second storage section. Therefore, this cell concentrate can be drawn directly without waste. In addition, since the cell concentrate is extracted from the second storage portion, that is, the tip of the accumulation portion of the cell concentrate, even if the container body is flexible and easily deformable, deformation can be suppressed and the extracting operation can be easily performed.
Therefore, according to the present invention, it is an object of the present invention to provide a container for cell concentration that can concentrate cells while maintaining a closed system with a simple structure and from which the cell concentrate can be easily and reliably extracted without waste. can be done.

本発明の細胞濃縮用容器において、目的細胞が単核球であって、単核球を含有する細胞懸濁液から単核球を濃縮すれば、細胞濃縮液を無駄なく抜き取って有効に使用することができる。
本発明の細胞濃縮用容器において、第2収容部が可撓性チューブにより形成され、排出部が第2収容部を外側から加圧して閉塞する構成であれば、外側から第2収容部を容易に開閉して細胞濃縮液を抜き取ることができ、操作性がよい。
In the container for cell concentration of the present invention, when the target cells are mononuclear cells and the mononuclear cells are concentrated from the cell suspension containing the mononuclear cells, the cell concentrate can be extracted without waste and used effectively. be able to.
In the container for cell concentration of the present invention, if the second storage part is formed of a flexible tube and the discharge part is configured to pressurize the second storage part from the outside to close it, the second storage part can be easily opened from the outside. The cell concentrate can be extracted by opening and closing the lid, and the operability is good.

本発明の細胞濃縮用容器において、排出部が先端に流路を有する硬質部材を備え、抜取具を貫通させることができる弾性部材により流路が閉塞されていれば、抜取具を貫通させることで容易に細胞濃縮液を抜き取ることができ、しかも抜取具を貫通させる際に硬質部材を支持して操作することができるため操作性がよい。また、硬質部材の内径に弾性部材を装着するため、嵌合代、すなわち、硬質部材の内径に対する弾性部材の封止力をコントロールすることが容易となり、確実な封止を行うことができる。なお、弾性部材にスリットが設けられていれば、抜取具が太くても弾性部材を貫通させることができ、細胞濃縮液をより大径の流路から抜き取ることができ、抜き取る際に細胞に損傷等を与えることを防止できる。よって、確実な封止力を得ながら、細胞濃縮液の抜き取りを容易に行うことができる。
さらに、弾性部材を貫通した抜取具の先端開口を弾性部材の隣接位置に配置可能に構成していれば、細胞濃縮液を抜取具により抜き取る際、内部に細胞濃縮液が残留し難く、無駄なく抜き取ることができる。
In the container for cell concentration of the present invention, if the discharging part has a rigid member having a flow path at the tip thereof, and the flow path is blocked by an elastic member through which the extraction tool can be passed, the extraction tool can be passed through. The cell concentrate can be easily extracted, and the hard member can be supported and operated when the extractor is passed through, resulting in good operability. Moreover, since the elastic member is attached to the inner diameter of the hard member, it becomes easy to control the fitting allowance, that is, the sealing force of the elastic member with respect to the inner diameter of the hard member, so that reliable sealing can be achieved. In addition, if the elastic member is provided with a slit, the elastic member can be penetrated even if the extractor is thick, and the cell concentrate can be extracted from a channel with a larger diameter, and the cells are damaged during extraction. etc. can be prevented. Therefore, it is possible to easily extract the cell concentrate while obtaining a reliable sealing force.
Furthermore, if the tip opening of the extractor penetrating the elastic member can be arranged at a position adjacent to the elastic member, when the cell concentrate is extracted by the extractor, it is difficult for the concentrated cell solution to remain inside the extractor without waste. can be extracted.

本発明の実施形態に係る細胞濃縮用容器の正面図である。1 is a front view of a cell concentration container according to an embodiment of the present invention; FIG. 本発明の実施形態に係る細胞濃縮用容器の排出部の構成を説明する図である。FIG. 4 is a diagram illustrating the configuration of the discharge section of the cell concentration container according to the embodiment of the present invention; 本発明の実施形態に係る細胞濃縮用容器を遠心分離機に装着する際に使用するアダプタを示し、(a)は断面図、(b)は底面図である。1 shows an adapter used when attaching a cell concentration container according to an embodiment of the present invention to a centrifuge, where (a) is a cross-sectional view and (b) is a bottom view.

以下、本発明の実施形態について図を用いて詳細に説明する。
本実施形態の遠心分離用容器は、目的細胞を含有する細胞懸濁液を密封状態で収容して遠心分離することで、目的細胞が一端側に沈降して濃縮されて細胞濃縮液が生成される容器である。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the container for centrifugation of the present embodiment, the cell suspension containing the target cells is housed in a sealed state and centrifuged, so that the target cells are sedimented at one end and concentrated to generate a cell concentrate. It is a container that

本実施形態の細胞懸濁液は、生体から採取されて目的細胞を含有する懸濁液であり、生体から採取された液、又は、生体から採取された液を遠心分離、濾過等の各種の方法で分離して得られた一部の成分からなる液やその希釈液などである。本実施形態では、髄液や末梢血などから赤血球が分離されて目的細胞としての単核球が含有された液である。 The cell suspension of the present embodiment is a suspension containing target cells collected from a living body, and the liquid collected from the living body or the liquid collected from the living body is subjected to various methods such as centrifugation and filtration. It is a liquid consisting of a part of the components obtained by separation by the method, a diluted liquid thereof, and the like. In this embodiment, it is a liquid containing mononuclear cells as target cells obtained by separating erythrocytes from cerebrospinal fluid, peripheral blood, or the like.

本実施形態の細胞濃縮用容器10は、図1に示すように、可撓性の容器本体11と、容器本体11の一端部に設けられた細胞濃縮液の排出部12と、他端部に接続された連結チューブ13と、他端部に設けられた懸垂部15とを備えている。 As shown in FIG. 1, the cell concentration container 10 of the present embodiment includes a flexible container body 11, a cell concentrate outlet 12 provided at one end of the container body 11, and a It has a connected connecting tube 13 and a hanging part 15 provided at the other end.

容器本体11は、第1収容部17と、第1収容部17の一端側の底部19に第1収容部17と連通して設けられ、遠心分離時に細胞濃縮液が生成して集積される第2収容部21と、を有している。本実施形態では、第1収容部17と第2収容部21とが接合部23を介して接合されている。 The container body 11 is provided in a first storage portion 17 and a bottom portion 19 on one end side of the first storage portion 17 so as to communicate with the first storage portion 17, and a cell concentrate is generated and accumulated during centrifugation. 2 housing portion 21 and . In this embodiment, the first accommodation portion 17 and the second accommodation portion 21 are joined together via the joining portion 23 .

第1収容部17は可撓性フィルムが互いに対向して周囲で密封されることでバッグ状に形成されている。第1収容部17の一端側には、第1収容部17の軸Lに沿って幅が縮小する縮小部25が設けられている。縮小部25の端部には接合部23を介して第2収容部21が接合されていて、第1収容部17の底部19が第2収容部21側に向けて下り勾配に形成されている。 The first housing portion 17 is formed in a bag shape by sealing the periphery of flexible films facing each other. A reduced portion 25 whose width is reduced along the axis L of the first accommodation portion 17 is provided on one end side of the first accommodation portion 17 . The second accommodation portion 21 is joined to the end portion of the reduced portion 25 via the joining portion 23, and the bottom portion 19 of the first accommodation portion 17 is formed to slope downward toward the second accommodation portion 21 side. .

第1収容部17の他端部側には、細胞懸濁液を第1収容部17内に供給したり、分離液や洗浄液等を排出したりするために他の器具と連結可能な複数の連結チューブ13が連結されるともに、細胞濃縮用容器10を他の部材に安定して吊り下げるための懸垂部15が設けられて密封されている。 On the other end side of the first container 17, there are a plurality of devices that can be connected to other instruments in order to supply the cell suspension into the first container 17 and to discharge the separation liquid, washing liquid, and the like. The connecting tube 13 is connected, and a hanging portion 15 for stably hanging the cell concentration container 10 on another member is provided and sealed.

第2収容部21は、可撓性チューブにより形成されていて、接合部23を介して第1収容部17に接合され、第1収容部17から軸Lに沿って一端側へ延びている。
接合部23は、成形体からなり、外周面が第1収容部17における縮小部25の内側に収容されて気密に接合され、軸L方向に突出した筒部27に第2収容部21が外嵌して気密に接合されている。
接合部23の内部には第2収容部21の一部を構成する貫通孔が軸L方向に設けられていて、第2収容部21が第1収容部17と連通している。すなわち、接合部23、筒部27の内部容積を含めて、第2収容部21と見做すこともできる。
The second housing portion 21 is formed of a flexible tube, joined to the first housing portion 17 via a joint portion 23, and extends from the first housing portion 17 along the axis L to one end side.
The joint portion 23 is made of a molded body, and the outer peripheral surface is housed inside the reduced portion 25 of the first housing portion 17 and is airtightly joined. It is fitted and airtightly joined.
A through hole forming a part of the second accommodation portion 21 is provided inside the joint portion 23 in the direction of the axis L, and the second accommodation portion 21 communicates with the first accommodation portion 17 . In other words, the joint portion 23 and the inner volume of the cylindrical portion 27 can also be regarded as the second housing portion 21 .

排出部12は、第2収容部21の一端部に設けられ、第2収容部21の一端部を気密に閉塞するとともに、先端29から細胞濃縮液を抜き取り可能に構成されている。
この排出部12は、図2に示すように、可撓性チューブ状の第2収容部21が外嵌して気密に接合されるとともに、内部に第2収容部21の内部と連通する流路31を有する成形体からなる硬質部材33と、流路31を気密に閉塞する弾性部材35と、弾性部材35及び硬質部材33の先端を外側から囲んで加圧したうえで閉塞可能なキャップ37と、硬質部材33の近接位置で第2収容部21を外側から圧迫して密封するクレンメ等のクリップ39と、を有する。硬質部材33は少なくとも第1収容部17及び第2収容部21よりも硬質に形成されている。
The discharge part 12 is provided at one end of the second storage part 21 , airtightly closes the one end of the second storage part 21 , and is configured to be able to extract the cell concentrate from the tip 29 .
As shown in FIG. 2 , the discharge part 12 is airtightly joined with a flexible tube-shaped second housing part 21 fitted on the outside thereof, and has a flow path communicating with the inside of the second housing part 21 . 31, an elastic member 35 that airtightly closes the flow path 31, and a cap 37 that surrounds and pressurizes the tips of the elastic member 35 and the hard member 33 from the outside and closes them. , and a clip 39 such as a crimp that presses the second housing portion 21 from the outside at a position close to the hard member 33 to seal it. The hard member 33 is formed at least harder than the first accommodating portion 17 and the second accommodating portion 21 .

本実施形態では、弾性部材35はシリンジの針管や筒先など、各種の抜取具41が貫通可能に形成されている。この弾性部材35には、軸L方向にスリット43が設けられることで、より太い抜取具41が貫通し易くされている。この弾性部材35は、硬質部材33の流路31に配置された状態で、キャップ37が締め込まれることで硬質部材33を介して外周側から加圧圧縮されて密封されるように構成されている。 In this embodiment, the elastic member 35 is formed so that various extraction tools 41 such as a needle tube and a tube tip of a syringe can penetrate therethrough. A slit 43 is provided in the elastic member 35 in the direction of the axis L so that a thicker extraction tool 41 can easily pass through. The elastic member 35 is arranged in the flow path 31 of the hard member 33 and is sealed by being pressurized and compressed from the outer peripheral side via the hard member 33 by tightening the cap 37 . there is

本実施形態の排出部12は、遠心分離時に閉塞状態を維持するために、クリップ39により第2収容部21の下端を外側から加圧して閉鎖するとともに、第2収容部21の端部でキャップ37を締め込むことにより、外側から加圧して流路31を密封している。 In order to maintain the closed state during centrifugation, the discharge section 12 of this embodiment is closed by pressing the lower end of the second housing section 21 from the outside with a clip 39, and the end of the second housing section 21 is capped. By tightening 37, the channel 31 is sealed by applying pressure from the outside.

また本実施形態の排出部12は、抜取具41を排出部12に貫通させた際、抜取具41が硬質部材33やキャップ37等に当接して第2収容部21内への挿入位置が規制されており、抜取具41の先端開口41aが第2収容部21の内部における弾性部材35の隣接位置、すなわち、本実施形態においては、第2収容部21の下方内壁を構成する弾性部材35の第2収容部21内部への露出面近傍に配置することが可能となっている。 Further, in the ejection portion 12 of the present embodiment, when the extractor 41 is passed through the ejection portion 12, the extractor 41 comes into contact with the hard member 33, the cap 37, etc., and the insertion position into the second housing portion 21 is restricted. The tip opening 41a of the extraction tool 41 is adjacent to the elastic member 35 inside the second housing portion 21, that is, in the present embodiment, the elastic member 35 constituting the lower inner wall of the second housing portion 21 is positioned. It can be arranged near the surface exposed to the inside of the second housing portion 21 .

本実施形態の細胞濃縮用容器10では、第1収容部17、接合部23、第2収容部21、及び硬質部材33がそれぞれ同一の樹脂又は互いに熱溶着可能な樹脂であって、収容される細胞懸濁液及び細胞濃縮液に対してより安全な樹脂により構成されており、各接合部分が熱溶着されている。 In the cell concentration container 10 of the present embodiment, the first accommodating portion 17, the joint portion 23, the second accommodating portion 21, and the hard member 33 are each made of the same resin or a resin that can be heat-welded to each other, and are accommodated. It is made of a safer resin for cell suspensions and cell concentrates, and each joint is heat-sealed.

本実施形態において、より具体的には、第1収容部17は、エチレン-酢酸ビニル共重合樹脂フィルムから袋状に形成し、接合部23は、エチレン-酢酸ビニル共重合樹脂成形体等から形成し、第2収容部21は、主として、エチレン-酢酸ビニル共重合樹脂製チューブ等から略管状に形成し、硬質部材33は、エチレン-酢酸ビニル共重合樹脂成形体等から構成される。上記の他、ポリエチレン樹脂、ポリプロピレン樹脂、エチレン-プロピレン共重合樹脂、ポリブタジエン樹脂、スチレン-ブタジエン共重合樹脂およびそれらの水素添加樹脂、ポリウレタン樹脂、ならびにそれらの樹脂の混合物などが用途に合わせて使用可能であるが、密着性、熱溶着性を考慮して適用する。密閉性、無菌状態維持、揮発性ガスの発生などを考慮すれば、熱溶着による接合が好ましく、熱溶着性のよい同一素材によって形成することが好ましい。 More specifically, in the present embodiment, the first storage portion 17 is formed in a bag shape from an ethylene-vinyl acetate copolymer resin film, and the joint portion 23 is formed from an ethylene-vinyl acetate copolymer resin molding or the like. The second accommodating portion 21 is mainly formed of an ethylene-vinyl acetate copolymer resin tube or the like in a substantially tubular shape, and the hard member 33 is composed of an ethylene-vinyl acetate copolymer resin molding or the like. In addition to the above, polyethylene resins, polypropylene resins, ethylene-propylene copolymer resins, polybutadiene resins, styrene-butadiene copolymer resins and their hydrogenated resins, polyurethane resins, and mixtures of these resins can be used according to the application. However, it is applied in consideration of adhesion and heat-weldability. In consideration of hermeticity, maintenance of sterile conditions, generation of volatile gas, etc., joining by heat welding is preferable, and it is preferable to use the same material with good heat-welding properties.

このような細胞濃縮用容器10を用いて細胞懸濁液中の目的細胞を濃縮して細胞濃縮液を得るには、予め細胞濃縮用容器10を連結チューブ13及び排出部12を閉塞した状態で滅菌しておき、連結チューブ13から細胞濃縮液と、適宜混合する成分や液と、をシリンジ等の抜取具41を用いて収容して密封する。 In order to obtain a cell concentrate by concentrating the target cells in the cell suspension using such a cell concentration container 10, the cell concentration container 10 is preliminarily closed with the connecting tube 13 and the discharge part 12 closed. After being sterilized, the cell concentrate and the components and liquids to be appropriately mixed are accommodated and sealed from the connecting tube 13 using an extractor 41 such as a syringe.

この細胞濃縮用容器10を、例えば図3(a)(b)に示すようなアダプタ45を用いて遠心分離機に装着する。アダプタ45は、遠心分離機の収容位置に設けられた治具46に細胞濃縮用容器10を安定して配置するもので、治具46の内面に対応した外周面47を有し、内側には第1収容部17の側周部を支持する内周面48aと、第1収容部17の一端側の縮小部25を支持する傾斜面48bとを有する。傾斜面48bの一端側には、軸方向に貫通して第2収容部21及び排出部12を安定して配置可能な内部配置部49が設けられている。内部配置部49は、第1収容部19の筒部27が配置される小径部49aと、第2収容部21が閉塞されないように例えば巻回するように曲げて収容される大径部49bと、を備えている。 This cell concentration container 10 is attached to a centrifuge using an adapter 45 as shown in FIGS. 3(a) and 3(b), for example. The adapter 45 stably arranges the cell concentration container 10 on the jig 46 provided at the housing position of the centrifuge. It has an inner peripheral surface 48 a that supports the side peripheral portion of the first accommodation portion 17 and an inclined surface 48 b that supports the reduced portion 25 on the one end side of the first accommodation portion 17 . At one end side of the inclined surface 48b, an internal arrangement portion 49 is provided that penetrates in the axial direction and allows the second accommodation portion 21 and the discharge portion 12 to be stably arranged. The internal arrangement portion 49 has a small diameter portion 49a in which the cylindrical portion 27 of the first housing portion 19 is arranged, and a large diameter portion 49b in which the second housing portion 21 is bent so as to be wound so as not to be blocked. , is equipped with

このアダプタ45を用いて細胞濃縮用容器10を遠心分離機に装着した状態で、遠心分離を行う。
これにより目的細胞が沈降し、順次第2収容部21の排出部12側に集積され、細胞濃縮液が生成される。細胞濃縮液の生成量が第2収容部21の容積より多い場合には、第1収容部17の縮小部25等にも細胞濃縮液が収容されてもよい。後述するクランプ51などで第1収容部17と第2収容部21を仕切る場合には、生成される細胞濃縮液の全量が収まる大きさの第2収容部21を用意して、第2収容部21に収容することが望ましい。
Centrifugation is performed in a state in which the cell concentration container 10 is attached to the centrifuge using this adapter 45 .
As a result, the target cells are sedimented and sequentially accumulated on the discharge section 12 side of the second storage section 21 to produce a cell concentrate. When the amount of cell concentrate produced is larger than the capacity of the second storage section 21, the contraction section 25 of the first storage section 17 or the like may also store the cell concentrate. When partitioning the first storage part 17 and the second storage part 21 with a clamp 51 to be described later, the second storage part 21 having a size that can accommodate the entire amount of the cell concentrate to be generated is prepared, and the second storage part 21 is desirable.

所定時間の遠心分離が終了した後、沈殿した細胞が散らないよう注意し、懸垂部15を利用して細胞濃縮用容器10を吊り下げ、図1中に仮想線で示すように、第1収容部17又は第2収容部21の外側からクランプ51で横断する位置を挟むことで、第1収容部17の内部と第2収容部21の内部とを液密に仕切る。
連結チューブ13からクランプ51より第1収容部17の他端部に収容された上清液を抜き取って排出する。
このとき予め容器本体11の側面に、懸垂部15で吊り下げたときの液面の位置を測定する目盛を設けておけば、この目盛りを基準にしてクランプ51により仕切ることで、排出する液量を調整することが可能である。
その後、必要に応じて、他の連結チューブ13から生理食塩水を添加し、同様に懸濁及び遠心分離してクランプ51で仕切って上清液を抜き取ることにより、細胞洗浄を行ってもよい。
After the centrifugation for a predetermined period of time is completed, the cell concentration container 10 is suspended using the suspension part 15 while being careful not to scatter the precipitated cells, and as indicated by the phantom line in FIG. The inside of the first accommodation portion 17 and the inside of the second accommodation portion 21 are liquid-tightly partitioned by sandwiching the crossing position with the clamp 51 from the outside of the portion 17 or the second accommodation portion 21 .
The supernatant liquid stored in the other end of the first storage portion 17 is extracted from the connecting tube 13 by the clamp 51 and discharged.
At this time, if a scale for measuring the position of the liquid surface when suspended by the suspension part 15 is provided on the side surface of the container body 11 in advance, the amount of liquid to be discharged can be determined by partitioning with the clamp 51 based on this scale. can be adjusted.
Thereafter, if necessary, cells may be washed by adding physiological saline from another connecting tube 13, similarly suspending and centrifuging the cells, partitioning the cells with a clamp 51, and removing the supernatant.

最終の遠心分離を行った後、クランプ51を外して濃縮細胞をタッピング等で外部から解して懸濁させる。
この状態で、シリンジ等の抜取具41を排出部12の先端から挿入して弾性部材35を貫通させ、抜取具41の先端開口41aを第2収容部21の内部における弾性部材35の隣接位置に配置し、第2収容部21内の液を抜き取ることで細胞濃縮液を得ることができる。
After the final centrifugation, the clamp 51 is removed and the concentrated cells are loosened from the outside by tapping or the like and suspended.
In this state, an extractor 41 such as a syringe is inserted from the distal end of the discharge portion 12 to pass through the elastic member 35 , and the tip opening 41 a of the extractor 41 is positioned adjacent to the elastic member 35 inside the second housing portion 21 . A cell concentrate can be obtained by arranging and extracting the liquid in the second container 21 .

以上のような本実施形態の細胞濃縮用容器10によれば、容器本体11が可撓性を有するので、密封状態で容積を増減でき、簡易な構造で閉鎖系を保ちつつ細胞濃縮のための各操作を行うことができる。 According to the cell concentration container 10 of the present embodiment as described above, since the container body 11 is flexible, the volume can be increased and decreased in a sealed state, and the cell concentration can be performed while maintaining a closed system with a simple structure. Each operation can be performed.

本実施形態の細胞濃縮用容器10では、容器本体11には、第1収容部17の一端側の底部19に第2収容部21が連通して設けられ、第1収容部17の一端側の底部19が第2収容部21側に下り勾配で設けられ、さらに第2収容部21の一端部に排出部12が設けられて先端29から細胞濃縮液を抜き取り可能に閉塞している。 In the cell concentration container 10 of the present embodiment, the container main body 11 is provided with the second containing portion 21 communicating with the bottom portion 19 on the one end side of the first containing portion 17 . A bottom portion 19 is provided with a downward slope toward the second storage portion 21 , and a discharge portion 12 is provided at one end of the second storage portion 21 to block the tip 29 so that the cell concentrate can be extracted.

そのため、遠心分離により目的細胞が一端側に沈降して集まることで、第2収容部21における排出部12の先端29から抜き取り易い位置に細胞濃縮液が生成する。よって、この細胞濃縮液を短い距離で容易に且つ無駄なく抜き取ることができる。しかも細胞濃縮液を先端29から直接抜き取るため、可撓性で変形し易い容器本体11であってもこの変形に影響されずに抜き取り操作を行うことができる。
従って、本実施形態の細胞濃縮用容器10によれば、簡易な構造で閉鎖系を保ちつつ細胞濃縮を行うことができるとともに、細胞濃縮液を容易に無駄なく確実に抜き取ることが可能である。
Therefore, the target cells are sedimented and gathered at one end side by centrifugation, so that a cell concentrate is generated at a position in the second storage part 21 that is easily extracted from the tip 29 of the discharge part 12 . Therefore, this cell concentrate can be easily and without waste over a short distance. Moreover, since the cell concentrate is directly extracted from the tip 29, even the flexible and easily deformable container body 11 can be extracted without being affected by the deformation.
Therefore, according to the cell concentration container 10 of the present embodiment, the cell concentration can be performed while maintaining a closed system with a simple structure, and the cell concentrate can be easily and reliably extracted without waste.

本実施形態では、細胞濃縮用容器10で多量の細胞懸濁液から少量の細胞濃縮液を生成するため、可撓性の容器本体11が大きくて取り扱う際に各種の変形が生じ易く、その一方で第2収容部21が小さく形成されている。そのため、第2収容部21の一端部に設けられた排出部12の先端29から、抜取具41により細胞濃縮液を抜き取ることで、大きく変形し易い第1収容部17に関係なく、細胞濃縮液を抜き取り操作することができ、細胞濃縮液を容易に無駄なく抜き取ることが可能である。ここでは目的細胞が単核球であり、単核球が濃縮された細胞濃縮液を無駄なく抜き取って有効に使用することができる。 In this embodiment, since a small amount of cell concentrate is produced from a large amount of cell suspension in the cell concentration container 10, the flexible container body 11 is large and easily deformed in various ways during handling. , the second accommodating portion 21 is formed small. Therefore, by extracting the cell concentrate with the extraction tool 41 from the tip 29 of the discharge part 12 provided at one end of the second storage part 21, the cell concentrate can be extracted regardless of the first storage part 17, which is easily deformed. can be extracted, and the cell concentrate can be easily extracted without waste. Here, the target cells are mononuclear cells, and the cell concentrate in which the mononuclear cells are concentrated can be extracted without waste and used effectively.

本実施形態の細胞濃縮用容器10によれば、第2収容部21が可撓性チューブにより形成され、排出部12が第2収容部21を外側から加圧して閉塞する構成であれば、外側から第2収容部21を容易に開閉して細胞濃縮液を抜き取ることができ、操作性がよい。 According to the cell concentration container 10 of the present embodiment, if the second storage part 21 is formed of a flexible tube and the discharge part 12 presses the second storage part 21 from the outside to close it, The second container 21 can be easily opened and closed to extract the cell concentrate, and the operability is good.

本実施形態の細胞濃縮用容器10によれば、排出部12が先端29に流路31を有する硬質部材33を備え、抜取具41が貫通可能な弾性部材35により流路31が閉塞されている。そのため、抜取具41を弾性部材35に貫通させることで容易に細胞濃縮液を抜き取ることができ、その際、硬質部材33を支持して操作することができるので、操作性を向上できる。
また、硬質部材33の内径からなる流路31に弾性部材35を装着しているので、嵌合代、すなわち、硬質部材33の内径に対する弾性部材35の封止力をコントロールすることが容易であり、確実な封止を行うことができる。これにより排出部12に高い遠心力がかかる場合にも確実な封止が可能である。
According to the cell concentration container 10 of the present embodiment, the discharge part 12 includes the hard member 33 having the channel 31 at the tip 29, and the channel 31 is blocked by the elastic member 35 through which the extraction tool 41 can pass. . Therefore, by allowing the extractor 41 to penetrate the elastic member 35, the cell concentrate can be easily extracted, and at that time, the hard member 33 can be supported and operated, so that operability can be improved.
Further, since the elastic member 35 is attached to the flow path 31 formed by the inner diameter of the hard member 33, it is easy to control the fitting allowance, that is, the sealing force of the elastic member 35 with respect to the inner diameter of the hard member 33. , a reliable sealing can be achieved. As a result, reliable sealing is possible even when a high centrifugal force is applied to the discharge part 12 .

本実施形態の細胞濃縮用容器10では、弾性部材35にスリット43が設けられているため、抜取具41が太くても弾性部材35を貫通させることができ、細胞濃縮液をより大径の流路31から抜き取ることができ、抜き取る際に細胞に損傷等を与えることを防止できる。 In the cell concentration container 10 of the present embodiment, since the elastic member 35 is provided with the slit 43, even if the extractor 41 is thick, the elastic member 35 can be penetrated, and the cell concentrate can flow in a larger diameter. The cells can be extracted from the channel 31, and the cells can be prevented from being damaged during extraction.

本実施形態の細胞濃縮用容器10によれば、弾性部材35を貫通した抜取具41の先端開口41aが弾性部材35の隣接位置に配置可能に構成されている。そのため細胞濃縮液を抜取具41により抜き取る際、第2収容部21の細胞濃縮液を底まで抜き取ることができ、細胞濃縮液が内部に残留し難く、無駄なく抜き取ることができる。 According to the cell concentration container 10 of the present embodiment, the tip opening 41 a of the extractor 41 passing through the elastic member 35 can be arranged at a position adjacent to the elastic member 35 . Therefore, when extracting the cell concentrate with the extractor 41, the cell concentrate in the second storage part 21 can be extracted to the bottom, and the cell concentrate is less likely to remain inside and can be extracted without waste.

なお上記実施形態は、本発明の範囲内において適宜変更可能である。
上記実施形態では、目的細胞の例として単核球の例について説明したが、細胞懸濁液を遠心分離することで、沈降して細胞濃縮可能な細胞であれば特に限定されない。例えば浮遊系の細胞であっても接着性細胞であってもよく、また各種の手法により培養された培養細胞であっても、各種の細胞スフェロイド等であってもよい。
また上記実施形態では、細胞濃縮用容器10の容器本体11として、第1収容部17が可撓性フィルムからなるバッグにより構成され、第2収容部21がチューブにより構成され、両者が接合された例について説明したが、第1収容部17及び第2収容部21が連続した可撓性フィルムにより一体に形成された容器であってよい。例えば第1収容部17の一端側に縮小部25が設けられるとともに、縮小部25の下端に第1収容部17より幅狭の第2収容部21が設けられた連続したフィルムからなる容器本体11を構成することも可能である。その場合、第2収容部21の一方側の端部に、例えば硬質部材33を気密に接合して貫通流路31を第2収容部21の内部と連通させてもよい。
It should be noted that the above embodiment can be appropriately modified within the scope of the present invention.
In the above embodiments, mononuclear cells were described as an example of target cells, but there is no particular limitation as long as the cells can be sedimented and cell-concentrated by centrifuging the cell suspension. For example, they may be floating cells or adherent cells, cultured cells cultured by various techniques, or various cell spheroids.
In the above-described embodiment, as the container body 11 of the cell concentration container 10, the first containing portion 17 is configured by a bag made of a flexible film, and the second containing portion 21 is configured by a tube, which are joined together. Although an example has been described, the container may be a container in which the first accommodation portion 17 and the second accommodation portion 21 are integrally formed of a continuous flexible film. For example, a container body 11 made of a continuous film having a contraction portion 25 provided at one end of a first accommodation portion 17 and a second accommodation portion 21 narrower than the first accommodation portion 17 at the lower end of the contraction portion 25. It is also possible to configure In that case, for example, a hard member 33 may be airtightly joined to one end of the second accommodation portion 21 to allow the through passage 31 to communicate with the inside of the second accommodation portion 21 .

さらに上記実施形態では、排出部12として、硬質部材33の流路31を弾性部材35で閉塞してキャップ37で密封した構造と、クレンメ等のクリップ39で第2収容部21の端部を加圧して閉鎖した構造と、との両方を設けた例について説明したが、何れか一方の構造のみを設けることも可能である。
また排出部12は開閉可能な構成としてもよく、例えばスクリューキャップによる開閉機構、針通栓、閉塞栓付コネクタなどとし、排出部12と第2収容部21との間で外側から閉塞する構成とすることも可能である。その場合、排出部からの漏れを確実に防止することができ、排出部12に高い遠心力がかかる場合に有効である。
さらに、上記実施形態では、第2収容部21の長さが比較的短いものについて説明したが、第2収容部21を主として可撓性チューブで構成する場合、第2収容部21として、より長い可撓性チューブを採用することも可能である。遠心分離機にセットするときには、可撓性チューブからなる第2収容部21が閉塞されないように曲げて、排出部12を容器の上方や遠心分離時の回転中心側の位置に保持し、その状態で遠心分離するようにしても良い。この場合、排出部12が容器上方や遠心分離時の回転中心方向に位置するので、排出部12に掛かる遠心力を緩和することができる。
Furthermore, in the above-described embodiment, the discharge portion 12 has a structure in which the flow path 31 of the hard member 33 is closed with the elastic member 35 and sealed with the cap 37, and the end portion of the second accommodation portion 21 is added with a clip 39 such as a clamp. Although an example has been described in which both the squeeze closed structure and the are provided, it is also possible to provide only one structure.
The discharge part 12 may be configured to be openable and closable. For example, an opening and closing mechanism using a screw cap, a needle plug, a connector with a blocking plug, or the like may be used, and the discharge part 12 and the second storage part 21 may be closed from the outside. It is also possible to In this case, leakage from the discharge portion can be reliably prevented, which is effective when high centrifugal force is applied to the discharge portion 12 .
Furthermore, in the above-described embodiment, the length of the second housing portion 21 is relatively short. It is also possible to employ flexible tubing. When setting in the centrifuge, the second accommodating part 21 made of a flexible tube is bent so as not to be closed, and the discharge part 12 is held above the container or at the position near the center of rotation during centrifugation. You may make it centrifuge by . In this case, since the discharge part 12 is positioned above the container or in the direction of the center of rotation during centrifugal separation, the centrifugal force acting on the discharge part 12 can be alleviated.

次に、本発明の実施例について説明する。
図1に示すような細胞濃縮用容器10を用い、末梢血から単核球を濃縮及び回収した。
細胞濃縮用容器10は、第1収容部17がエチレン酢酸ビニル共重合体のフィルムからなり、第2収容部21がポリ塩化ビニルのチューブからなり、接合部23がポリエチレンの成形体からなる。この細胞濃縮用容器10は予めガンマ線照射により滅菌した。
Next, examples of the present invention will be described.
Mononuclear cells were concentrated and recovered from peripheral blood using a cell concentration container 10 as shown in FIG.
In the cell concentration container 10, the first containing portion 17 is made of an ethylene-vinyl acetate copolymer film, the second containing portion 21 is made of a polyvinyl chloride tube, and the joint portion 23 is made of a polyethylene molding. This cell concentration container 10 was previously sterilized by gamma ray irradiation.

針21GセーフタッチPSVセット(商標)を用いて、CPDA液入り血液バッグに120mL末梢血を採取した。なお、CPDA液入り血液バッグには、CPDA液16.8mLが入っていた。
末梢血5mLをサンプリングして血液成分測定を行い、白血球数、リンパ球数、単球数を測定した。白血球数、リンパ球数から末梢血110mL中の総単核球数を計算したところ、有核細胞数は6700cells/μLで、120mL中では804cells×10/120mLであった。また単核球数は2770cells/μLで、120mL中で332.4cells×10/120mLであった。
120 mL peripheral blood was collected into blood bags containing CPDA fluid using a needle 21G SafeTouch PSV Set™. The blood bag containing the CPDA liquid contained 16.8 mL of the CPDA liquid.
5 mL of peripheral blood was sampled to measure blood components, and white blood cell count, lymphocyte count, and monocyte count were measured. When the total mononuclear cell count in 110 mL of peripheral blood was calculated from the white blood cell count and lymphocyte count, the nucleated cell count was 6700 cells/μL, and 804 cells×10 6 /120 mL in 120 mL. The mononuclear cell count was 2770 cells/μL, which was 332.4 cells×10 6 /120 mL in 120 mL.

CPDA液入り血液バッグのCPDA液含有末梢血136.8mLから、120mLを遠心分離機(SEPAX2、商標)の分離に用いることから、遠心分離機(SEPAX2、商標)での分離前の末梢血110mLに含まれる細胞数は、それぞれ有核細胞数が646.5cells×10/110mLで、単核球数が267.3 cells×10/110mLとなった。 From 136.8 mL of CPDA liquid-containing peripheral blood in the blood bag containing CPDA liquid, 120 mL is used for separation by the centrifuge (SEPAX2, trademark), so that 110 mL of peripheral blood before separation by the centrifuge (SEPAX2, trademark) The number of cells contained was 646.5 cells×10 6 /110 mL for nucleated cells and 267.3 cells×10 6 /110 mL for mononuclear cells.

遠心分離機(SEPAX2、商標)により単核球の分離及び回収を行った。
CPDA液含有末梢血120mL(末梢血量は110mL)、ヒトリンパ球分離用媒体(Ficoll-Paque PREMIUM 1.073、GEヘルスケア社製、商標)100 mL、生理食塩水1000mLを用いて、遠心分離機(SEPAX2、商標)にセットし、単核球の分離の工程プログラムを実行して、回収用バッグに45mLの単核球懸濁液を回収した。
Separation and recovery of mononuclear cells was performed by a centrifuge (SEPAX2™).
CPDA solution-containing peripheral blood 120 mL (peripheral blood volume is 110 mL), human lymphocyte separation medium (Ficoll-Paque PREMIUM 1.073, GE Healthcare, trademark) 100 mL, physiological saline 1000 mL, centrifuge (SEPAX2™), the mononuclear cell isolation process program was run, and 45 mL of mononuclear cell suspension was collected in a collection bag.

詳細には、ヒトリンパ球分離用媒体91mLを遠心チャンバーへ導入し、CPDA液含有末梢血を遠心チャンバーに導入し、合計量211mLとし、15分間、所定の遠心力を印加し、遠心分離を行った。バフィーコート及び血漿を退避用バッグへ一時退避させて、赤血球を廃棄した。 Specifically, 91 mL of the human lymphocyte separation medium was introduced into the centrifugation chamber, the peripheral blood containing the CPDA solution was introduced into the centrifugation chamber, the total amount was 211 mL, and a predetermined centrifugal force was applied for 15 minutes to perform centrifugation. . The buffy coat and plasma were temporarily evacuated to the evacuation bag, and red blood cells were discarded.

その後、生理食塩水で遠心チャンバーを洗浄した後、退避用バッグからバフィーコート及び血漿を遠心チャンバーへ戻して生理食塩水を加えて遠心分離し、上清みを廃棄した。遠心チャンバーの洗浄及び生理食塩水を加えた遠心分離の操作を2回繰り返した。
生成物に生理食塩水を加えて45mLにして回収用バッグに収容した。
回収用バッグからシリンジで細胞懸濁液45mLを回収し、細胞懸濁液2mLを無菌試験用容器にサンプリングして無菌試験に供した。その結果、菌の検出は認められなかった。
Thereafter, after washing the centrifugation chamber with physiological saline, the buffy coat and plasma were returned from the evacuation bag to the centrifugal chamber, physiological saline was added, centrifugation was performed, and the supernatant was discarded. The operation of washing the centrifugation chamber and centrifugation with physiological saline was repeated twice.
The product was made up to 45 mL with saline and placed in a collection bag.
45 mL of the cell suspension was recovered from the recovery bag with a syringe, and 2 mL of the cell suspension was sampled in a sterile test container and subjected to a sterility test. As a result, no bacteria were detected.

また細胞懸濁液1mLをサンプリングし、多項目自動血球分析装置(XN-Series、シメックス社製、商標)で血液成分測定を行い、リンパ球数、単球数を測定した。上記データを用いて細胞回収率を算出し、トリパンブルー試薬を用いて細胞生存率を計測した。
その結果、有核細胞数は4208cells/μLで、45mL中では189.4cells×10/45mLであった。単核球数は3970cells/μLで、45mL中では178.7cells×10/45mL、42mL中では166.7cells×10/42mLであった。
In addition, 1 mL of the cell suspension was sampled, and blood components were measured using a multi-item automatic blood cell analyzer (XN-Series, Simex Co., Ltd., trademark) to measure the lymphocyte count and monocyte count. Cell recovery was calculated using the above data, and cell viability was measured using trypan blue reagent.
As a result, the number of nucleated cells was 4208 cells/μL, and 189.4 cells×10 6 /45 mL in 45 mL. The mononuclear cell count was 3970 cells/μL, 178.7 cells×10 6 /45 mL in 45 mL and 166.7 cells×10 6 /42 mL in 42 mL.

細胞回収率を計算すると(178.7 cells×10)/(267.3cells×10)×100で66.8%となった。また生存率は99.5%であった。
なお細胞懸濁液45mLの一部を無菌試験用容器にサンプリングして無菌試験に供したところ、菌の検出は認められなかった。
The cell recovery rate was calculated as (178.7 cells×10 6 )/(267.3 cells×10 6 )×100, which was 66.8%. Moreover, the survival rate was 99.5%.
When a portion of 45 mL of the cell suspension was sampled in a sterility test container and subjected to a sterility test, no bacteria were detected.

次に、図1に示すような細胞濃縮用容器10を用いて細胞濃縮を行った。
細胞懸濁液42mLを収容した細胞濃縮用容器10に83mLの生理食塩水を注入し、全量125mLとした。細胞濃縮用容器10を図3に示す形状保持アダプタを装着してテーブルトップ冷却遠心機 5500(株式会社久保田製作所製)にセットし、20度に設定したうえで、650Gで10分間遠心分離して細胞濃縮を行った。細胞濃縮後に液漏れがないことを確認した。
Next, cell concentration was performed using a cell concentration container 10 as shown in FIG.
83 mL of physiological saline was injected into the cell concentration container 10 containing 42 mL of the cell suspension to make the total volume 125 mL. The cell concentration container 10 is fitted with the shape-retaining adapter shown in FIG. 3, set in a table-top refrigerated centrifuge 5500 (manufactured by Kubota Seisakusho Co., Ltd.), set to 20 degrees, and centrifuged at 650 G for 10 minutes. Cell enrichment was performed. It was confirmed that there was no liquid leakage after cell concentration.

細胞濃縮後、沈殿した細胞が散らないよう注意し、懸垂部15を利用して細胞濃縮用容器10を吊り下げ、第1収容部17の外側からクランプ51で図1に仮想線で示すように横断する位置を挟むことで、第1収容部17の内部と第2収容部21の内部とを液密に仕切り、第2収容部21に細胞濃縮液を収容した。
このときクランプ51から排出部12までの第2収容部21に収容される細胞濃縮液の液量が4mL以下になるようにした。
After cell concentration, be careful not to scatter the precipitated cells, suspend the cell concentration container 10 using the suspension part 15, and clamp 51 from the outside of the first storage part 17 as shown by the phantom line in FIG. By sandwiching the crossing position, the inside of the first container 17 and the inside of the second container 21 were liquid-tightly partitioned, and the cell concentrate was stored in the second container 21 .
At this time, the liquid volume of the cell concentrate stored in the second storage portion 21 from the clamp 51 to the discharge portion 12 was set to 4 mL or less.

第1収容部17の他端部に設けられた連結チューブ13からクランプ51上部の上清みを抜き取った。
この上清みからエンドトキシン測定用サンプルを回収し、エンドトキシン測定システム(Endosafe(R)-PTS (PTS100)、登録商標、和研薬株式会社製)によりエンドトキシン量を測定したところ、測定値が0.05 EU/mL未満であり、日本薬局方の髄腔に投与する医薬品の基準のエンドトキシン値を満足するものであった。なおSample RT CVは0%、Spike RT CVは10.6%、Spike Recoveryは92%であった。
The supernatant above the clamp 51 was extracted from the connecting tube 13 provided at the other end of the first accommodating portion 17 .
A sample for endotoxin measurement was collected from this supernatant, and the amount of endotoxin was measured using an endotoxin measurement system (Endosafe(R)-PTS (PTS100), registered trademark, manufactured by Wakenyaku Co., Ltd.), and the measured value was 0.00. 05 EU/mL, which satisfies the Japanese Pharmacopoeia standard endotoxin value for drugs administered into the intrathecal cavity. Sample RT CV was 0%, Spike RT CV was 10.6%, and Spike Recovery was 92%.

その後、クランプ51を外して濃縮細胞をタッピング等で外部から解して懸濁させた。
シリンジを排出部12の先端から挿入して弾性部材35を貫通させ、シリンジの先端開口41aを第2収容部21の内部における弾性部材35の隣接位置に配置し、細胞懸濁液をシリンジで抜き取った。シリンジ内の細胞懸濁液の体積を測定したところ、採取量は4mLであった。
After that, the clamp 51 was removed, and the concentrated cells were loosened from the outside by tapping or the like and suspended.
A syringe is inserted from the tip of the discharge part 12 to penetrate the elastic member 35, the tip opening 41a of the syringe is arranged at a position adjacent to the elastic member 35 inside the second storage part 21, and the cell suspension is extracted with the syringe. rice field. When the volume of the cell suspension in the syringe was measured, the collected volume was 4 mL.

得られた細胞濃縮液の単核球数を測定した。
シリンジ内の細胞懸濁液の一部をサンプリングし、多項目自動血球分析装置(XN-Series、シメックス社製、商標)で血液成分測定を行い、リンパ球数、単球数を測定した。上記データを用いて単核球の細胞回収率を算出し、トリパンブルー試薬を用いて細胞生存率を計測した。
その結果、有核細胞数は40304cells/μLで、4mL中では161.2cells×10/4mLであった。単核球数は37851cells/μLで、4mL中では151.4cells×10/4mLであった。
The mononuclear cell count of the obtained cell concentrate was measured.
A portion of the cell suspension in the syringe was sampled, and blood components were measured using a multi-item automatic blood cell analyzer (XN-Series, manufactured by Simex Co., Ltd., trademark) to determine the number of lymphocytes and monocytes. Using the above data, the cell recovery rate of mononuclear cells was calculated, and the cell viability was measured using the trypan blue reagent.
As a result, the number of nucleated cells was 40304 cells/μL, which was 161.2 cells×10 6 /4 mL in 4 mL. The mononuclear cell count was 37851 cells/μL and 151.4 cells×10 6 /4 mL in 4 mL.

細胞回収率を計算すると、(151.4cells×10)/(166.7cells×10)×100=90.8%となった。また生存率は99%であった。
なお、シリンジ内の細胞濃縮液の一部を無菌試験用容器にサンプリングして無菌試験に供したところ、菌の検出は認められなかった。
The cell recovery rate was calculated as (151.4 cells×10 6 )/(166.7 cells×10 6 )×100=90.8%. Moreover, the survival rate was 99%.
When a portion of the cell concentrate in the syringe was sampled in a sterility test container and subjected to a sterility test, no bacteria were detected.

以上における各工程での細胞数と細胞回収率と細胞生存率とを表1にまとめた。

Figure 0007226738000001
Table 1 summarizes the cell number, cell recovery rate, and cell survival rate in each step above.
Figure 0007226738000001

またエンドトキシン測定量及び無菌試験結果を表2にまとめた。

Figure 0007226738000002
Table 2 summarizes the measured amount of endotoxin and the results of the sterility test.
Figure 0007226738000002

表1から明らかなように、末梢血から遠心分離機(SEPAX2、商標)で単核球懸濁液を回収し、細胞濃縮用容器10により単核球濃縮液の回収を行ったところ、4mL以下で回収することができ、細胞回収率は90.8%と高回収率であった。
末梢血採取後、遠心分離機(SEPAX2、商標)での細胞分離、細胞濃縮用容器10での細胞濃縮、最終製品であるシリンジへの充填において、安全性の確認として、エンドトキシン測定、無菌試験を実施したが、特に問題となる結果は無かった。
As is clear from Table 1, when a mononuclear cell suspension was collected from peripheral blood with a centrifuge (SEPAX2, trademark) and a mononuclear cell concentrate was collected with the cell concentration container 10, the result was 4 mL or less. The cell recovery rate was as high as 90.8%.
After peripheral blood collection, cell separation in a centrifuge (SEPAX2, trademark), cell concentration in the cell concentration container 10, and filling into the final product syringe, endotoxin measurement and sterility test are performed to confirm safety. I tried it, but it didn't give me any results.

10 細胞濃縮用容器
11 容器本体
12 排出部
13 連結チューブ
15 懸垂部
17 第1収容部
19 底部
21 第2収容部
23 接合部
25 縮小部
27 筒部
29 先端
31 流路
33 硬質部材
35 弾性部材
37 キャップ
39 クリップ
41 抜取具
41a 先端開口
43 スリット
45 アダプタ
47 外周面
48 傾斜面
49 内部配置部
51 クランプ
10 Cell concentration container 11 Container body 12 Discharge part 13 Connection tube 15 Hanging part 17 First storage part 19 Bottom part 21 Second storage part 23 Joint part 25 Reduction part 27 Cylindrical part 29 Tip 31 Flow path 33 Hard member 35 Elastic member 37 Cap 39 Clip 41 Extractor 41a Tip opening 43 Slit 45 Adapter 47 Peripheral surface 48 Inclined surface 49 Internal arrangement portion 51 Clamp

Claims (6)

可撓性の容器本体の一端部に排出部を有し、目的細胞を含有する細胞懸濁液が密封状態で収容されて遠心分離されることで、一端側に前記目的細胞が沈降して細胞濃縮液が生成される細胞濃縮用容器であって、
前記容器本体は、第1収容部と、前記第1収容部の前記一端側の底部に該第1収容部と連通して設けられて前記細胞濃縮液が貯留される第2収容部と、を有し、
前記第1収容部の一端側には、該第1収容部の軸に沿って幅が縮小する縮小部が設けられることで前記底部前記第2収容部側に向けて下り勾配に形成され、
前記第2収容部は、クリップにより外側から圧迫して密封可能であるとともに閉塞されないように曲げることが可能な可撓性チューブにより形成され、接合部を介して前記第1収容部の前記縮小部の端部に接合され、
前記接合部は、成形体からなり、前記第1収容部の内側に収容されて気密に接合されるとともに前記第1収容部の軸方向に突出した筒部に前記第2収容部が外嵌して気密に接合され、
前記排出部は、前記第2収容部の前記一端部に流路を有する硬質部材を備えていて、前記流路が抜取具を貫通させて前記細胞濃縮液を抜き取り可能な弾性部材により閉塞されている、細胞濃縮用容器。
A flexible container body has a discharge part at one end, and a cell suspension containing target cells is contained in a sealed state and centrifuged to precipitate the target cells at one end. A cell concentration container in which a concentrate is produced,
The container body includes a first storage part, and a second storage part provided at the bottom of the first storage part on the one end side so as to communicate with the first storage part and in which the cell concentrate is stored. have
At one end side of the first housing portion, a reduced portion whose width is reduced along the axis of the first housing portion is provided so that the bottom portion slopes downward toward the second housing portion ,
The second housing portion is formed of a flexible tube that can be sealed by pressing from the outside with a clip and that can be bent so as not to be closed. is joined to the end of the
The joint portion is made of a molded body, is housed inside the first housing portion and is airtightly joined, and the second housing portion is externally fitted to a cylindrical portion protruding in the axial direction of the first housing portion. are hermetically joined,
The discharge part includes a hard member having a flow path at the one end of the second storage part, and the flow path is closed by an elastic member that allows an extraction tool to penetrate and extract the cell concentrate. A container for cell concentration.
前記排出部は、前記弾性部材を貫通した前記抜取具の先端開口が前記弾性部材の隣接位置に配置されるように、前記抜取具を当接させて該抜取具の挿入位置を規制可能に構成されている、請求項1に記載の細胞濃縮用容器。 The discharge part is configured to allow the extraction tool to come into contact with the extraction tool so that the tip opening of the extraction tool penetrating the elastic member is arranged at a position adjacent to the elastic member, thereby regulating the insertion position of the extraction tool. The container for cell concentration according to claim 1, wherein the container is 前記目的細胞が単核球である、請求項1に記載の細胞濃縮用容器。 The container for cell concentration according to claim 1, wherein the target cells are mononuclear cells. 前記弾性部材にスリットが設けられている、請求項1に記載の細胞濃縮用容器。 The container for cell concentration according to claim 1, wherein the elastic member is provided with a slit. 請求項1又は2に記載の細胞濃縮用容器を用いた細胞濃縮方法であって、 A cell concentration method using the container for cell concentration according to claim 1 or 2,
前記細胞濃縮用容器に細胞懸濁液を収容して密封し、 housing and sealing the cell suspension in the container for cell concentration,
前記第1収容部の側周面を支持する内周面と、前記第1収容部の前記縮小部を支持する傾斜面と、前記第2収容部及び前記排出部を配置する内部配置部と、を有するアダプタに、前記第2収容部を巻回するように曲げた状態で収容するとともに前記細胞濃縮用容器を支持させて遠心分離機に装着し、 an inner peripheral surface that supports the side peripheral surface of the first accommodating portion, an inclined surface that supports the reduced portion of the first accommodating portion, an internal arrangement portion that arranges the second accommodating portion and the discharging portion; The second storage part is accommodated in a wound state in an adapter having a
遠心分離を行って前記第2収容部に細胞濃縮液を生成させ、 Centrifuging to generate a cell concentrate in the second container,
前記抜取具の先端開口を前記弾性部材の隣接位置に配置して前記第2収容部内の細胞濃縮液を抜き取ることで細胞濃縮液を得る、細胞濃縮方法。 A cell concentration method, wherein a cell concentrate is obtained by extracting the cell concentrate from the second container with the tip opening of the extraction tool positioned adjacent to the elastic member.
前記目的細胞が単核球であって、単核球を含有する細胞懸濁液から単核球を濃縮する、請求項5に記載の細胞濃縮方法。 6. The cell enrichment method according to claim 5, wherein the target cells are mononuclear cells, and the mononuclear cells are enriched from a cell suspension containing the mononuclear cells.
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Citations (5)

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JP2009189280A (en) 2008-02-13 2009-08-27 Olympus Corp Centrifugal separation container and centrifugal separation apparatus
WO2012017663A1 (en) 2010-08-04 2012-02-09 財団法人ヒューマンサイエンス振興財団 Mononuclear cell separation column, mononuclear cell separation system, method for separating out mononuclear cells, mononuclear cells, and drug for internal administration
JP2012044876A (en) 2010-08-24 2012-03-08 Olympus Corp Centrifugal container
JP2012510272A (en) 2008-12-01 2012-05-10 バクスター・インターナショナル・インコーポレイテッド Apparatus and method for treating biological material
JP2015057287A (en) 2014-11-25 2015-03-26 独立行政法人国立がん研究センター Centrifugal separation tool

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009189280A (en) 2008-02-13 2009-08-27 Olympus Corp Centrifugal separation container and centrifugal separation apparatus
JP2012510272A (en) 2008-12-01 2012-05-10 バクスター・インターナショナル・インコーポレイテッド Apparatus and method for treating biological material
WO2012017663A1 (en) 2010-08-04 2012-02-09 財団法人ヒューマンサイエンス振興財団 Mononuclear cell separation column, mononuclear cell separation system, method for separating out mononuclear cells, mononuclear cells, and drug for internal administration
JP2012044876A (en) 2010-08-24 2012-03-08 Olympus Corp Centrifugal container
JP2015057287A (en) 2014-11-25 2015-03-26 独立行政法人国立がん研究センター Centrifugal separation tool

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