JP7357599B2 - 細胞外小胞分離法、コロイド粒子とその調製方法 - Google Patents
細胞外小胞分離法、コロイド粒子とその調製方法 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/06—Making microcapsules or microballoons by phase separation
- B01J13/14—Polymerisation; cross-linking
- B01J13/18—In situ polymerisation with all reactants being present in the same phase
- B01J13/185—In situ polymerisation with all reactants being present in the same phase in an organic phase
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/12—Agar or agar-agar, i.e. mixture of agarose and agaropectin; Derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/20—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the sorbent material
- B01D15/206—Packing or coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
- B01D15/265—Adsorption chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
- B01D15/38—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving specific interaction not covered by one or more of groups B01D15/265 and B01D15/30 - B01D15/36, e.g. affinity, ligand exchange or chiral chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/42—Selective adsorption, e.g. chromatography characterised by the development mode, e.g. by displacement or by elution
- B01D15/424—Elution mode
- B01D15/426—Specific type of solvent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/20—After-treatment of capsule walls, e.g. hardening
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
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Description
本発明のコロイド粒子が細胞外小胞を効率的に分離できることを証明するために、次の実験を特別に行った。
(1)アガロース粒子の調製
(1)クロマトグラフカラムの充填
(1)クロマトグラフカラムの充填
実施例3の実験操作条件および手順は、基本的に上記表2の実施例2と同じであり、違いは、サンプル分析において抗体磁気ビーズ法を使用していないことにあり、ELISAで検出されたCD9/CD9信号値を精製前の細胞培養培液と比較し、かつ細胞外小胞の回収率を推定し、同時にいずれのコロイド粒子もCD9/CD9抗体活性を有することを確認した。
(1)クロマトグラフカラムの充填
Claims (9)
- 細胞外小胞の分離に用いるコロイド粒子を調製する方法であり、
水とアガロースで2wt%~6wt%の濃度のアガロース溶液を調製し、90℃~100℃に加熱してから、5wt%~20wt%の濃度の界面活性剤と50wt%~60wt%の濃度の鉱油を前記アガロース溶液に加えて乳化し、第1コロイド材料を形成し、
前記第1コロイド材料をふるいでふるいにかけ、粒子径範囲が25μm~500μmの第2コロイド材料を得て、前記第2コロイド材料を洗剤で洗浄して、油分や不純物を除去し、
洗浄した前記第2コロイド材料に濃度0.1M~0.5Mの架橋剤を添加し、攪拌して第3コロイド材料を形成し、
前記第3コロイド材料を有機溶剤で洗浄し、次に前記第3コロイド材料を修飾溶液で表面修飾して、生体適合性分子で表面が修飾されたコロイド粒子を得て、
そのうち、前記修飾溶液が生体適合性分子を含み、前記修飾溶液に含まれる前記生体適合性分子の濃度は0.1Mから0.5Mであり、前記生体適合性分子は、CMC(カルボキシメチルセルロースナトリウム,sodium carboxymethyl cellulose)、MC(メチルセルロース,methyl cellulose)、グリシン(glycine)、アスパラギン酸(aspartic acid)、グルタミン酸(glutamic acid)、ウシ血清アルブミン(BSA)、胎児ウシ血清(FBS)またはそれらの組み合わせである、
コロイド粒子の調製方法。 - 前記界面活性剤が、Triton X-100、Tween 20、Tween 80、Span 80、またはそれらの組み合わせである、請求項1に記載のコロイド粒子の調製方法。
- 前記洗剤が、SDS(ドデシル硫酸ナトリウム,sodium dodecyl sulfate)、DOC(デオキシコール酸ナトリウム,sodium deoxycholate)、CTAB(臭化ヘキサデシルトリメチルアンモニウム,cetyltrimethylammonium bromide)、またはそれらの組み合わせである、請求項1に記載のコロイド粒子の調製方法。
- 前記架橋剤が、エピクロロヒドリン(epichlorohydrin)、DCP(1,3‐ジクロロ‐2‐プロパノール/1,3-dichloro-2-propanol)、2,3‐ジブロモプロパノール(2,3-dibromopropanol)、ジビニルスルホン(divinyl sulfone)、ビスオキシラン(bis-oxiranes)またはそれらの組み合わせである、請求項1に記載のコロイド粒子の調製方法。
- 前記有機溶剤が、アセトン(acetone)、エタノール(ethanol)、メタノール(methanol)またはそれらの組み合わせである、請求項1に記載のコロイド粒子の調製方法。
- エタノールの使用濃度は20%から75%、アセトンの使用濃度は20%から75%であり、メタノールの使用濃度は20%から75%である、請求項5に記載のコロイド粒子の調製方法。
- 請求項1から6のいずれか一項に記載のコロイド粒子の調製方法で調製されたコロイド粒子を準備し、
前記コロイド粒子をカラムに充填し、ふるい板で前記コロイド粒子を軽く押してその表面を均し、
PBSバッファで数回すすいだ後、生物学的サンプルを前記カラムに加え、前記生物学的サンプルとカラム内の前記コロイド粒子を18℃から24℃で作用させ、
PBSバッファを前記カラムに加え入れて溶離及び/または遠心分離して、中段の溶離溶液を収集し、前記中段の溶離溶液には細胞外小胞が含まれる、細胞外小胞の分離方法。 - 前記生物学的サンプルが、細胞培養液、血漿、血清、尿液、脳脊髄液(cerebrospinal fluid)、または羊水(amniotic fluid)を含む、請求項7に記載の細胞外小胞の分離方法。
- 前記カラムがオープンカラム、遠心分離カラムあるいはフラッシュカラムである、請求項7に記載の細胞外小胞の分離方法。
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