JP6732033B2 - 培地評価方法、培地、及び培養方法 - Google Patents
培地評価方法、培地、及び培養方法 Download PDFInfo
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- JP6732033B2 JP6732033B2 JP2018542410A JP2018542410A JP6732033B2 JP 6732033 B2 JP6732033 B2 JP 6732033B2 JP 2018542410 A JP2018542410 A JP 2018542410A JP 2018542410 A JP2018542410 A JP 2018542410A JP 6732033 B2 JP6732033 B2 JP 6732033B2
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- 238000011156 evaluation Methods 0.000 title claims description 93
- 238000012136 culture method Methods 0.000 title description 3
- 239000002609 medium Substances 0.000 claims description 195
- 239000002245 particle Substances 0.000 claims description 105
- 239000006249 magnetic particle Substances 0.000 claims description 54
- 230000014759 maintenance of location Effects 0.000 claims description 50
- 238000011084 recovery Methods 0.000 claims description 44
- 239000001963 growth medium Substances 0.000 claims description 36
- 230000004907 flux Effects 0.000 claims description 10
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 6
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 5
- 239000004626 polylactic acid Substances 0.000 claims description 5
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- 238000004062 sedimentation Methods 0.000 description 52
- 238000000034 method Methods 0.000 description 21
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- 238000005516 engineering process Methods 0.000 description 8
- 230000004927 fusion Effects 0.000 description 8
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000011324 bead Substances 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 229920002148 Gellan gum Polymers 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000000216 gellan gum Substances 0.000 description 4
- 235000010492 gellan gum Nutrition 0.000 description 4
- 229920000609 methyl cellulose Polymers 0.000 description 4
- 239000001923 methylcellulose Substances 0.000 description 4
- 235000010981 methylcellulose Nutrition 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
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- 239000013049 sediment Substances 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 238000010191 image analysis Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 210000000130 stem cell Anatomy 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000007910 cell fusion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004113 cell culture Methods 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
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- 235000014655 lactic acid Nutrition 0.000 description 1
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- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Dispersion Chemistry (AREA)
- Biotechnology (AREA)
- Cell Biology (AREA)
- Microbiology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
本実施形態では、培地中に分散させた粒子の沈降速度を測定し、測定された沈降速度を培地の適性を示す指標値とした。
本実施形態では、培地中に分散させた磁性粒子に磁場を印加した場合の移動量を用いて培地の適性の評価を行った。
・・・(1)
上記(1)式により導出された、粒子数の比が0.5となるXhalfの値が、培地42における磁性粒子44に作用する磁力と保持力とがつり合う距離x(以下、「つり合い距離xhalf」という)を示す。
2016年9月30日出願の日本国特許出願2016−195053号の開示は、その全体が参照により本明細書に取り込まれる。
本明細書に記載された全ての文献、特許出願、及び技術規格は、個々の文献、特許出願、及び技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。
12 培地
14 粒子
20 光源
22 平行光
24 カメラ
40 容器
41 底面
42 培地
44 磁性粒子
50 磁石
Claims (7)
- 細胞塊を浮遊させた状態で培養する培地の適性を評価する培地評価方法であって、
容器内に収容された培地中に複数の磁性粒子を分散させ、
前記容器内に磁場を印加し、
磁場発生源からの予め定められた距離から予め定められた領域の範囲に含まれる前記磁性粒子の磁場印加前後の粒子数の個数比が、予め定められた値となる距離xを測定し、
測定された距離xを培地の適性を示す指標値とする、
培地評価方法。 - 前記予め定められた領域の範囲は、磁性粒子の粒径の3倍以上、100倍以下の範囲である、
請求項1に記載の培地評価方法。 - 前記磁性粒子として、粒径が100μmであり、かつ密度が1.4g/cm3であり、かつマグネタイト含有率が40%の磁性ポリ乳酸粒子を使用する、
請求項1または請求項2に記載の培地評価方法。 - 前記磁場の印加は、表面磁束密度が150mT以上、250mT以下の磁石を前記容器の予め定められた一方向の面に配置することにより行う、
請求項1から請求項3のいずれか1項に記載の培地評価方法。 - 前記磁性粒子として、粒径が100μmであり、かつ密度が1.4g/cm3であり、かつマグネタイト含有率が40%の磁性ポリ乳酸粒子を使用し、
前記磁場の印加は、表面磁束密度が200mTの磁石を前記容器の予め定められた一方向の面に配置することにより行われ、測定された指標値が予め定められた範囲内である前記培地を適正な培地であると判定する、
請求項1または請求項2に記載の培地評価方法。 - 前記予め定められた範囲の上限値は、培地が前記細胞塊を保持する保持性能に基づいて予め定められた値である、
請求項5に記載の培地評価方法。 - 前記予め定められた範囲の下限値は、培地から細胞塊を回収する回収効率に基づいて予め定められた値である、
請求項5または請求項6に記載の培地評価方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016195053 | 2016-09-30 | ||
JP2016195053 | 2016-09-30 | ||
PCT/JP2017/033606 WO2018061847A1 (ja) | 2016-09-30 | 2017-09-15 | 培地評価方法、培地、及び培養方法 |
Publications (2)
Publication Number | Publication Date |
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JPWO2018061847A1 JPWO2018061847A1 (ja) | 2019-08-29 |
JP6732033B2 true JP6732033B2 (ja) | 2020-07-29 |
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JP2018542410A Active JP6732033B2 (ja) | 2016-09-30 | 2017-09-15 | 培地評価方法、培地、及び培養方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US11435276B2 (ja) |
EP (1) | EP3521416B1 (ja) |
JP (1) | JP6732033B2 (ja) |
KR (1) | KR20190040334A (ja) |
CN (1) | CN109844096A (ja) |
WO (1) | WO2018061847A1 (ja) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPWO2004078961A1 (ja) * | 2003-03-07 | 2006-06-08 | メビオール株式会社 | 浮遊担体および浮遊・回収方法 |
CN101416059A (zh) * | 2003-07-17 | 2009-04-22 | 格洛伯塞尔解决方案公司 | 自动化细胞培养系统及方法 |
WO2007081161A1 (en) * | 2006-01-11 | 2007-07-19 | Korea Institute Of Science And Technology | An apparatus and method for separating biological particles using difference between gravity and magnetic force |
TWI719697B (zh) | 2014-01-23 | 2021-02-21 | 日商日產化學股份有限公司 | 液體組成物 |
JP2016099238A (ja) * | 2014-11-21 | 2016-05-30 | 株式会社東芝 | 磁性体粒子の濃度測定装置および濃度測定方法 |
JP2016195053A (ja) | 2015-04-01 | 2016-11-17 | トヨタ自動車株式会社 | 膜電極接合体の製造方法 |
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2017
- 2017-09-15 CN CN201780060847.0A patent/CN109844096A/zh active Pending
- 2017-09-15 JP JP2018542410A patent/JP6732033B2/ja active Active
- 2017-09-15 WO PCT/JP2017/033606 patent/WO2018061847A1/ja unknown
- 2017-09-15 EP EP17855802.9A patent/EP3521416B1/en active Active
- 2017-09-15 KR KR1020197008912A patent/KR20190040334A/ko not_active Application Discontinuation
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2019
- 2019-03-26 US US16/364,186 patent/US11435276B2/en active Active
Also Published As
Publication number | Publication date |
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KR20190040334A (ko) | 2019-04-17 |
JPWO2018061847A1 (ja) | 2019-08-29 |
US20190219492A1 (en) | 2019-07-18 |
WO2018061847A1 (ja) | 2018-04-05 |
US11435276B2 (en) | 2022-09-06 |
EP3521416A1 (en) | 2019-08-07 |
CN109844096A (zh) | 2019-06-04 |
EP3521416A4 (en) | 2019-08-28 |
EP3521416B1 (en) | 2020-07-01 |
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