JP6301260B2 - Rna調製法 - Google Patents
Rna調製法 Download PDFInfo
- Publication number
- JP6301260B2 JP6301260B2 JP2014543359A JP2014543359A JP6301260B2 JP 6301260 B2 JP6301260 B2 JP 6301260B2 JP 2014543359 A JP2014543359 A JP 2014543359A JP 2014543359 A JP2014543359 A JP 2014543359A JP 6301260 B2 JP6301260 B2 JP 6301260B2
- Authority
- JP
- Japan
- Prior art keywords
- rna
- pcr
- alkali metal
- biological sample
- rna extraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229930006000 Sucrose Natural products 0.000 description 1
- UZMAPBJVXOGOFT-UHFFFAOYSA-N Syringetin Natural products COC1=C(O)C(OC)=CC(C2=C(C(=O)C3=C(O)C=C(O)C=C3O2)O)=C1 UZMAPBJVXOGOFT-UHFFFAOYSA-N 0.000 description 1
- 239000007994 TES buffer Substances 0.000 description 1
- 108020004566 Transfer RNA Proteins 0.000 description 1
- HDTRYLNUVZCQOY-WSWWMNSNSA-N Trehalose Natural products O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-WSWWMNSNSA-N 0.000 description 1
- 239000007997 Tricine buffer Substances 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 229920004929 Triton X-114 Polymers 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 101100068489 Vicia faba AGPC gene Proteins 0.000 description 1
- UKTDQTGMXUHPIF-UHFFFAOYSA-N [Na].S(O)(O)=O Chemical compound [Na].S(O)(O)=O UKTDQTGMXUHPIF-UHFFFAOYSA-N 0.000 description 1
- HDTRYLNUVZCQOY-LIZSDCNHSA-N alpha,alpha-trehalose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-LIZSDCNHSA-N 0.000 description 1
- 210000004381 amniotic fluid Anatomy 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 239000007798 antifreeze agent Substances 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 239000007998 bicine buffer Substances 0.000 description 1
- OWMVSZAMULFTJU-UHFFFAOYSA-N bis-tris Chemical compound OCCN(CCO)C(CO)(CO)CO OWMVSZAMULFTJU-UHFFFAOYSA-N 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 239000006172 buffering agent Substances 0.000 description 1
- ZOAIGCHJWKDIPJ-UHFFFAOYSA-M caesium acetate Chemical compound [Cs+].CC([O-])=O ZOAIGCHJWKDIPJ-UHFFFAOYSA-M 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical class [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- LYQFWZFBNBDLEO-UHFFFAOYSA-M caesium bromide Chemical compound [Br-].[Cs+] LYQFWZFBNBDLEO-UHFFFAOYSA-M 0.000 description 1
- XQPRBTXUXXVTKB-UHFFFAOYSA-M caesium iodide Chemical compound [I-].[Cs+] XQPRBTXUXXVTKB-UHFFFAOYSA-M 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- YDMCWONVABEGBK-UHFFFAOYSA-N carbamimidoylazanium;phenoxide Chemical compound NC(N)=N.OC1=CC=CC=C1 YDMCWONVABEGBK-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- BHQCQFFYRZLCQQ-OELDTZBJSA-N cholic acid Chemical compound C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)[C@@H](O)C1 BHQCQFFYRZLCQQ-OELDTZBJSA-N 0.000 description 1
- 229960002471 cholic acid Drugs 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- KCFYHBSOLOXZIF-UHFFFAOYSA-N dihydrochrysin Natural products COC1=C(O)C(OC)=CC(C2OC3=CC(O)=CC(O)=C3C(=O)C2)=C1 KCFYHBSOLOXZIF-UHFFFAOYSA-N 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- ZMMJGEGLRURXTF-UHFFFAOYSA-N ethidium bromide Chemical compound [Br-].C12=CC(N)=CC=C2C2=CC=C(N)C=C2[N+](CC)=C1C1=CC=CC=C1 ZMMJGEGLRURXTF-UHFFFAOYSA-N 0.000 description 1
- 229960005542 ethidium bromide Drugs 0.000 description 1
- 102000013165 exonuclease Human genes 0.000 description 1
- 210000001808 exosome Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000002523 gelfiltration Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 229960000789 guanidine hydrochloride Drugs 0.000 description 1
- PJJJBBJSCAKJQF-UHFFFAOYSA-N guanidinium chloride Chemical compound [Cl-].NC(N)=[NH2+] PJJJBBJSCAKJQF-UHFFFAOYSA-N 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 210000002751 lymph Anatomy 0.000 description 1
- 230000002934 lysing effect Effects 0.000 description 1
- 235000010335 lysozyme Nutrition 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 229940099607 manganese chloride Drugs 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000002679 microRNA Substances 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 239000002853 nucleic acid probe Substances 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- IYGIARHSFFLWKG-UHFFFAOYSA-M potassium sodium acetate nitrate Chemical compound C(C)(=O)[O-].[Na+].[N+](=O)([O-])[O-].[K+] IYGIARHSFFLWKG-UHFFFAOYSA-M 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000019419 proteases Nutrition 0.000 description 1
- 235000004252 protein component Nutrition 0.000 description 1
- 238000003753 real-time PCR Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002336 ribonucleotide Substances 0.000 description 1
- 125000002652 ribonucleotide group Chemical group 0.000 description 1
- 108020004418 ribosomal RNA Proteins 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003297 rubidium Chemical class 0.000 description 1
- FOGKDYADEBOSPL-UHFFFAOYSA-M rubidium(1+);acetate Chemical compound [Rb+].CC([O-])=O FOGKDYADEBOSPL-UHFFFAOYSA-M 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 235000010262 sodium metabisulphite Nutrition 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000009870 specific binding Effects 0.000 description 1
- 210000003802 sputum Anatomy 0.000 description 1
- 208000024794 sputum Diseases 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
- C12N15/1003—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor
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- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6806—Preparing nucleic acids for analysis, e.g. for polymerase chain reaction [PCR] assay
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- C07H1/06—Separation; Purification
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- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H1/00—Processes for the preparation of sugar derivatives
- C07H1/06—Separation; Purification
- C07H1/08—Separation; Purification from natural products
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Description
本発明において、生物試料から非分解のRNAを調製するために、アルカリ金属塩と界面活性剤を使用し、検体に内在するリボヌクレアーゼによるRNAの分解を防止しながら、その後の酵素反応に供試可能なRNAを調製する。
マウス血液から、以下の手順でRNAを抽出し、抽出したRNAを鋳型としてRT−PCRを行い、RNAに由来する増幅断片をアガロースゲル電気泳動により確認した。
以下の組成のRNA抽出試薬を調製した。
塩化リチウム、75mM TAPS(pH8.0)、2.25mM CaCl2、15mM MgCl2、175mM グリコール酸、5mM デオキシコール酸、50mM EDTA、0.05% Triton X−100
マウスより血液を回収した。抗凝固剤としてはヘパリンを用いた。このマウス血液2μlにRNA抽出試薬を18μl添加し、75℃にて5分間インキュベートした。インキュベート後の溶液を室温まで冷却した後、2μlのDNase I(10Unitsに相当する量)を添加し、42℃/5分間→75℃/10分間インキュベートした。
上記にて調製したRNA試料を室温まで冷却し、それを鋳型としてRT−PCRを行い、検体に由来する核酸の増幅断片を得た。RT−PCRは、H3F3A mRNAを標的とし、フォワードプライマーF1(5’−GGCCTCACTTGCCTCCTGCAA−3’;配列番号1)、リバースプライマーR1(5’−GCAAGAGTGCGCCCTCTACTG−3’;配列番号2)をプライマーセットとして用いた。RT−PCRはPrimeScript One Step RT−PCR Kit Ver.2(タカラバイオ社製)を用い、上記で調製したRNA試料を反応溶液に対して2%容量添加し行った。反応は、50℃/30分間の逆転写反応、94℃/1分間の逆転写酵素の失活処理の後、94℃/15秒間→62℃/15秒間→72℃/15秒間のPCRサイクルを30サイクル行った。また、ネガティブコントロールとして増幅断片がDNAに由来するものではないことを確認するために、逆転写反応をせずに、94℃/15秒間→60℃/15秒間→72℃/15秒間のPCRサイクルを30サイクル行った。次に、RT−PCR産物を常法に基づきアガロースゲル電気泳動に供し、増幅断片を可視化した。
マウス血液から、以下の手順でRNAを抽出し、抽出したRNAを鋳型としてRT−PCRを行い、RNAに由来する増幅断片をアガロースゲル電気泳動により確認した。
以下の組成のアルカリ金属塩を含むRNA抽出試薬を調製した。
0.7M アルカリ金属塩、75mM TAPS(pH8.0)、2.25mM CaCl2、15mM MgCl2、175mM グリコール酸、5mM デオキシコール酸、50mM EDTA、0.05% Triton X−100
調製したRNA抽出試薬を用いて、実施例1と同様の手法により、マウスより血液を回収し、RNAを抽出した。
実施例1と同様の手法により、上記にて抽出したRNA試料を鋳型としてRT−PCRを行い、各検体に由来する核酸の増幅断片を得た。
マウス血液から、以下の手順でRNAを抽出し、抽出したRNAを鋳型としてRT−PCRを行い、増幅断片をアガロースゲル電気泳動により確認した。
以下の組成の強カオトロピック物質もしくは多価金属塩もしくはアンモニウム塩を含むRNA抽出試薬を調製した。
0.7 M強カオトロピック物質もしくは多価金属塩もしくはアンモニウム塩、75mM TAPS(pH8.0)、2.25mM CaCl2、15mM MgCl2、175mM グリコール酸、5mM デオキシコール酸、50mM EDTA、0.05% Triton X−100
調製したRNA抽出試薬を用いて、実施例1と同様の手法により、マウスより血液を回収し、RNAを抽出した。
実施例1と同様の手法により、上記にて抽出したRNA試料を鋳型としてRT−PCRを行った。
マウス血液から、以下の手順でRNAを抽出し、抽出したRNAを鋳型としてRT−PCRを行い、増幅断片をアガロースゲル電気泳動により確認した。
以下の組成の界面活性剤を含まないRNA抽出試薬を調製した。
0.7M 塩化リチウム、75mM TAPS(pH8.0)、2.25mM CaCl2、15mM MgCl2、50mM EDTA
調製したRNA抽出試薬を用いて、実施例1と同様の手法により、マウスより血液を回収し、検体からRNAを抽出した。
実施例1と同様の手法により、上記にて抽出したRNA試料を鋳型としてRT−PCRを行った。
ヒト培養細胞であるHEK293T細胞及びJurkat細胞から、以下の手順でRNAを抽出し、その存在をアガロースゲル電気泳動により確認した。
以下の組成の塩化リチウムを含むRNA抽出試薬を調製した。
0.7M 塩化リチウム、75mM TAPS(pH8.0)、2.25mM CaCl2、15mM MgCl2、175mM グリコール酸、5mM デオキシコール酸、50mM EDTA、0.05% Triton X−100
103〜105個分の培養細胞を遠心分離し、ペレットとして回収した。この細胞ペレットにRNA抽出試薬を18μl添加し、75℃にて5分間インキュベートした。インキュベート後の溶液を室温まで冷却した後、2μlのDNase I(10 Units分)を添加し、42℃/5分間→75℃/10分間インキュベートした。
上記にて抽出したRNA試料を室温まで冷却し、それぞれを鋳型としてRT−PCRを行い、細胞に由来する核酸の増幅断片を得た。RT−PCRは、ACTB mRNAを標的とし、フォワードプライマーF2(5’−AGATGGCCACGGCTGCT−3’;配列番号3)、リバースプライマーR2(5’−AACCGCTCATTGCCAATGG−3’;配列番号4)をプライマーセットとして用いた。RT−PCRはPrimeScript One Step RT−PCR Kit Ver.2(タカラバイオ社製)を用い、上記で調製したRNA試料を反応溶液に対して2%容量添加し行った。反応は、50℃/30分間の逆転写反応、94℃/1分間の逆転写酵素の失活処理の後、94℃/15秒間→60℃/15秒間→72℃/15秒間のPCRサイクルを30サイクル行った。また、ネガティブコントロールとして、逆転写反応をせずに、94℃/15秒間→60℃/15秒間→72℃/15秒間のPCRサイクルを30サイクル行った。次に、RT−PCR産物を常法に基づきアガロースゲル電気泳動に供し、増幅断片を可視化した。
Claims (6)
- アルカリ金属塩、並びにグリコール酸類及びデオキシコール酸類を含む界面活性剤を含み、アルカリ金属塩の濃度が0.3〜5.0Mである
ことを特徴とする、生物試料中のRNAを抽出するための試薬。 - アルカリ金属塩が、アルカリ金属ハロゲン化物である、請求項1に記載の試薬。
- アルカリ金属塩が、塩化リチウムである、請求項1又は2に記載の試薬。
- 請求項1〜3のいずれかに記載の試薬を有することを特徴とする、RNA抽出キット。
- 請求項1〜3のいずれかに記載の試薬、又は請求項4に記載のRNA抽出キットを用いることを特徴とする、生物試料中のRNAを抽出する方法。
- 下記工程(a)〜(b):
(a)請求項1〜3のいずれかに記載の試薬を用いて、生物試料からRNAを抽出する工程、および
(b)工程(a)で得られたRNA抽出液を、さらなる精製工程または希釈工程を行うことなく、酵素反応溶液に直接基質として混合し、酵素反応を開始する工程
を含む、生物試料中のRNAを抽出する方法。
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