WO2005022156A1 - タンパク質の固定化方法 - Google Patents
タンパク質の固定化方法 Download PDFInfo
- Publication number
- WO2005022156A1 WO2005022156A1 PCT/JP2004/012447 JP2004012447W WO2005022156A1 WO 2005022156 A1 WO2005022156 A1 WO 2005022156A1 JP 2004012447 W JP2004012447 W JP 2004012447W WO 2005022156 A1 WO2005022156 A1 WO 2005022156A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protein
- tag
- immobilized
- carrier
- immobilizing
- Prior art date
Links
Classifications
-
- 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
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/25375—Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.]
- Y10T436/255—Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.] including use of a solid sorbent, semipermeable membrane, or liquid extraction
Definitions
- the present invention relates to a protein immobilization method that can be widely used, for example, when immobilizing a protein on the surface of a carrier.
- one of the protein and protein to be subjected to the interaction analysis or one of the protein and compound is immobilized on a sensor chip, and then the other protein or compound is immobilized. Is applied to a sensor chip, and the mass change resulting from the protein-protein interaction or protein-compound interaction is detected as an SPR signal.
- the interaction analysis using the principle of SPR has a merit that the required amount of protein is small because it is a highly sensitive functional analysis method.
- the present invention provides a method for immobilizing various proteins of interest on a carrier regardless of the amount of the protein of interest and without non-specifically immobilizing contaminating proteins.
- the purpose of the present invention is to provide a method for immobilizing proteins that can be performed.
- the present inventors have conducted intensive studies and as a result, purified the protein having the first tag portion and the second tag portion using the first tag portion, and immobilized the purified protein on a carrier.
- the protein is allowed to act after activating the reactive group on the side of the immobilization carrier, thereby allowing the second tag portion of the protein to interact with the immobilization carrier and immobilizing the protein with the protein.
- the present invention has been found that various proteins of interest can be firmly immobilized irrespective of the amount of the protein of interest and without non-specifically immobilizing contaminating proteins, regardless of the amount of protein of interest. Was completed.
- the present invention includes the following.
- the interaction between the second tag portion and the binding site of the second tag portion of the immobilized carrier and the covalent bond between the reactive group and the protein are performed.
- a protein immobilization method wherein the protein is immobilized on the immobilization carrier.
- the first step includes a step of separating and extracting the protein using a purification means having a first tag site binding site, wherein the protein is immobilized according to (1).
- the reactive group is a carboxyl group
- amine coupling is performed between the carboxyl group and an amino group in the protein to be immobilized. Immobilization method.
- the histidine tag and the immobilized carrier are caused to interact via Ni 2 + -nitrilotriacetic acid (Ni-NTA).
- the histidine tag and the immobilized carrier are allowed to interact with each other via N-iminodiacetic acid (Ni-IDA) (7).
- Ni-IDA N-iminodiacetic acid
- the second fragment is a histidine tag
- the antibody is an anti-histidine fragment antibody
- the histidine tag is immobilized between the histidine tag and the immobilized carrier via an anti-histidine tag antibody.
- a sample containing a test substance to be detected is placed on an immobilized carrier having a protein immobilized by the protein immobilization method according to any one of (1) to (11).
- a protein-immobilized carrier, and a method for detecting affinity between the protein immobilized on the immobilized carrier and the test substance contained in the sample is placed on an immobilized carrier having a protein immobilized by the protein immobilization method according to any one of (1) to (11).
- the affinity between the protein and the test substance is detected by the principle of surface plasmon resonance. (12) The protein-test substance affinity described in (12). Detection method.
- a substrate a polysaccharide molecular chain provided on the substrate, into which a reactive group capable of covalently bonding to the protein to be immobilized has been introduced, and a protein to be immobilized, wherein the protein is as described above.
- the method for immobilizing a protein according to the present invention can be applied when immobilizing a protein on an immobilization carrier, and is not limited to a specific technical range.
- the method for immobilizing a protein according to the present invention may include surface plasmon resonance
- SPR Surface Plasmon Resonanse
- QCM quartz crystal microbalance
- DPI dual-polarization interferometry
- the method for immobilizing a protein according to the present invention is not limited to the production of a sensor chip using the principle of SPR or the principle of QCM.
- a protein chip protein array
- affinity It can also be applied when making beads (affinity columns).
- this sensor chip has a light-transmitting substrate 1, a metal film 2 provided on one main surface of the substrate 1, and an immobilization device provided on the metal film 2. And a carrier 3.
- the immobilization carrier 3 is a self-assembled monolayer (SAM) having a reactive group such as a lipoxyl group or a SAM and a lipoxymethyl dextran immobilized on the metal film 2.
- SAM self-assembled monolayer
- the immobilization carrier 3 has a reactive group that covalently binds the protein to be immobilized.
- the reactive group of the immobilization carrier 3 means a functional group that forms a covalent bond with the protein to be immobilized. Examples of the reactive group include a carboxylic group and a thiol group.
- the immobilization carrier 3 may have a polysaccharide molecular chain into which a reactive group that covalently binds to the protein to be immobilized has been introduced. When the immobilization carrier 3 has the polysaccharide molecular chain, the protein to be immobilized is covalently bonded to the reactive group present in the polysaccharide molecular chain and forms a chelate with the polysaccharide molecular chain. It is fixed to the immobilization carrier 3. Examples of the polysaccharide molecular chain include dextran.
- the immobilization carrier 3 has a second tag part binding site that binds to the second tag part of the protein to be immobilized.
- the binding site of the second tag portion is appropriately selected according to the second tag portion. For example, for a protein having a histidine-one tag as the second tag portion, nitritrilotriacetic acid (NTA) Or iminodiacet ic acid
- IDA dal thione S-transferase-tagged protein and maltose
- an antigen peptide is used as the second tag part.
- an antibody that reacts with the antigen peptide by an antigen-antibody reaction can be used as the second tag portion binding site as the second tag portion binding site.
- the immobilization target is not particularly limited as long as it has two tag portions, that is, a protein having a first tag portion and a second tag portion, and any protein can be applied. can do.
- the first tag portion is a tag portion used when purifying the protein to be immobilized, and is a site that interacts with the first tag portion binding site in the purification step.
- the binding site of the first tag portion is appropriately selected according to the first tag portion. For example, for a protein having a histidine-one tag as the first evening portion, nitrilotriacetic acid (NTA ) Or iminodiacetic acid (IDA), daltathione for proteins having a daluzion thione S transferase-tag as the first tag part, and maltose for proteins having a maltose-binding protein-one tag. be able to.
- an antibody that reacts with the antigen peptide by an antigen-antibody can be used as the first tag portion binding site as the first tag portion binding site.
- the first tag portion for example, histidine ligase (hereinafter, referred to as His-tag), daldin thione S-transferase one tag (hereinafter, referred to as GST-tag), maltose-binding protein one tag (hereinafter, referred to as MBP-tag), antigen peptides and the like.
- His-tag histidine ligase
- GST-tag daldin thione S-transferase one tag
- MBP-tag maltose-binding protein one tag
- a FLAG-tag, an MBP-tag and a GST-tag are preferable.
- the second tag portion is a site that interacts with the second tag portion binding site on the side of the immobilization carrier 3 and contributes to the binding between the protein and the immobilization carrier 3.
- the second tag section may be different from the first tag section, and includes the evenings listed for the first tag section.
- a His-tag and a GST-tag are preferable as the second tag portion.
- the protein is not limited at all, and a protein having any property can be applied.
- the protein may be a basic protein or an acidic protein, and may be a hydrophobic protein or a hydrophilic protein.
- the evening protein having the first and second evening portions includes a recombinant vector having the first and second evening portions and a gene encoding a protein in a frame-matched state. It can be prepared by expressing as a fusion protein of the first tag portion and the second tag portion and a protein.
- the first and second tag portions function as tags, respectively, that is, they exist on either the N-terminal or C-terminal side of the protein as long as they can interact with the tag binding site. You may do it.
- the first tag portion and the second tag portion may be adjacent or separately.
- the method for preparing the protein having the first and second evening portions to be immobilized is not limited at all, and any preparation method can be applied. For example, (1) a method of introducing a gene encoding the protein into a vector, and then introducing the recombinant vector into a host and expressing the protein in the host, or (2) a method such as a wheat germ cell-free system. Methods for expressing the protein in a cell system are mentioned.
- the plasmid DNA for introducing the gene encoding the protein having the first and second fragments to be immobilized may be a plasmid derived from an E. coli bacterium (for example, pET30b or the like).
- E. coli bacterium for example, pET30b or the like.
- PBR system PBR system
- pUC system such as pUC118, pUC119, pUC18 and pUC19, pBluescript, etc.
- Bacillus subtilis-derived plasmids eg, pUB110, pTP5, etc.
- yeast-derived plasmids for example, ⁇ system such as ⁇ 13, YCp system such as YCp50.
- phage DNA include ⁇ phage (Charon4A, Cliaron21A, EMBL3, EMBL4, AgtlOAgtlh ⁇ , etc.).
- animal viruses such as retrovirus or vaccinia virus, plant viruses such as cauliflower mosaic virus, and insect virus vectors such as baculovirus can also be used.
- the cDNA of the gene is first cut with an appropriate restriction enzyme, and then an appropriate vector]) NA And a method of inserting into a restriction enzyme site or a multiple cloning site and ligating to a vector.
- the two can be linked by the in vitro method using PCR or the in vivo method using yeast or the like. It may be a method.
- a transformant expressing the protein is obtained by introducing a recombinant vector containing a gene encoding a protein having a first tag portion and a second tag portion to be immobilized into a host.
- a host is not particularly limited as long as it can express the above-mentioned gene, but plants belonging to Poaceae, Brassicaceae, Solanaceae, Leguminosae, etc., and Escherichia such as Escherichia coli.
- a bacterium belonging to the genus Bacillus such as Bacillus subtilis, or a genus such as Pseudomonas putida; Examples include yeast such as Pombe (Schizosaccharomyces pombe), animal cells such as COS cells and CH0 cells, and insect cells such as Si9.
- yeast such as Pombe (Schizosaccharomyces pombe)
- animal cells such as COS cells and CH0 cells
- insect cells such as Si9.
- Methods for introducing the above-described recombinant vector into a plant include ordinary transformation methods, for example, an electroporation method (electroporation method), an agrobacterium method, a particle gun method, and a PEG method.
- the method for introducing the above-described recombinant vector into bacteria is not particularly limited as long as it is a method for introducing DNA into bacteria, and examples thereof include a method using calcium ions and an electro-bolization method.
- the method for introducing the above-described recombinant vector into yeast is not particularly limited as long as it is a method for introducing DNA into yeast, and examples thereof include an elect-portation method, a spheroplast method, and a lithium acetate method.
- monkey cells such as COS-7, Vero, Chinese Hams evening ovary cells (CH0 cells), and mouse / cells are used.
- the method for introducing the above-described recombinant vector into animal cells is not particularly limited as long as it is a method for introducing DNA into animal cells.
- the electroporation method, calcium phosphate method, ribofect Chillon method and the like can be mentioned.
- the method for introducing the above-described recombinant vector into insect cells is not particularly limited as long as it is a method for introducing DNA into insect cells, and examples thereof include a calcium phosphate method, a lipofection method, and an electroporation method.
- PR0TEI0S manufactured by Toyobo Co., Ltd.
- PR0TEI0S manufactured by Toyobo Co., Ltd.
- a recombinant vector for wheat germ cell-free system containing a gene encoding a protein having a first tag portion and a second tag portion to be immobilized as type III eg, For example, mRNA is synthesized in a reaction system containing pEU3- ⁇ plasmid (manufactured by Toyobo) and thermoT7 RNA polymerase (manufactured by Toyobo).
- the synthesized mRNA is subjected to phenol / cloth form treatment to remove the protein, and then exchanged with a buffer for PR0TEIOS by ethanol precipitation.
- a protein having a first tag portion and a second tag portion to be immobilized is synthesized using the synthesized mRNA according to the protocol of PR0TEIOS.
- the protein to be immobilized is purified using the first tag portion.
- purifying using the first tag portion means that the first tag portion of the protein to be immobilized interacts with the binding site of the first tag portion so that the protein to be immobilized is converted into contaminating proteins and the like. It means to separate and extract from the biological material containing.
- the purification method include a method using affinity chromatography, an affinity resin and a magnetic pease.
- examples of the purification means having the first tag portion binding site include a carrier having the first tag portion binding site immobilized thereon, a column filled with the carrier, and the like. Carriers include agarose and sepharose.
- a protein to be immobilized having the FLAG tag as the first tag portion is prepared by the method described above.
- the solution containing the protein to be immobilized is brought into contact with a carrier such as agarose carrying the anti-FLAG tag antibody.
- the complex of the carrier to be immobilized and the carrier bound via the antigen-antibody reaction is separated.
- FLAG Petit By adding 2004/012447 to the complex, the protein to be immobilized can be competitively eluted. Further, the eluted protein to be immobilized can be separated from the carrier or FLAG peptide by, for example, low-speed centrifugation (for example, 2000 g).
- the reactive group of the immobilization carrier 3 is activated.
- Activation means transition of a reactive group to a state where a covalent bond can be formed with a protein to be immobilized, which is present near the reactive group.
- the immobilized carrier 3 having a lipoxyl group as a reaction group for example, a mixture of N-ethyl N '-(dimethylaminopropyl) carbodiimide (EDO and N-hydroxysucc inimide (NHS)) is used.
- EEO and N-hydroxysucc inimide N-hydroxysucc inimide
- the protein to be immobilized is allowed to act on the immobilization carrier 3, and the protein is immobilized.
- the second evening part of the protein to be immobilized interacts with the immobilization carrier 3.
- the interaction means that the second tag part binds to the second tag part binding site, and the protein is immobilized to the protein.
- the protein is relatively loosely bound to the immobilized carrier 3.
- nickel or the like is added to NTA or IDA introduced into the immobilized carrier 3.
- Metal through the nickel The His-tag and NTA or IDA form a complex Nickel can be trapped by NTA or IDA either before or after activation of the immobilized carrier 3.
- the His-tagged protein And the immobilized carrier 3 into which NTA or IDA has been introduced.
- the immobilized carrier 3 into which daryuthione is introduced and the protein are combined with a phosphate buffer solution (eg, PBS) under physiological conditions or a physiological condition.
- a phosphate buffer solution eg, PBS
- a Hepes buffer eg, HBS
- a phosphate buffer (eg, PBS) under physiological conditions or a Hepes buffer (eg, HBS) under physiological conditions are also used. They can interact when they coexist.
- the protein to be immobilized since the second tag portion of the protein to be immobilized interacts with the immobilization carrier 3, the protein to be immobilized is It is present at a relatively high concentration near the immobilization carrier 3. others 2004/012447 As a result, a covalent bond is easily formed between the activated reactive group and the protein, and a covalent bond is easily formed between the activated reactive group and the protein.
- the reactive group when the reactive group is a hydroxyl group, a covalent bond is formed between the amino group present in the protein to be immobilized and the reactive group, that is, an amide coupling is formed.
- the reactive group is a carboxyl group
- the covalent bond between the free thiol group present in the protein to be immobilized and the reactive group is formed by converting the lipoxyl group to PDEA, that is, ligand-thiol coupling.
- PDEA 2- (2-pyridinyldithio) ethaneamine hydrochloride
- the carboxyl group is reacted with cystamine diliydrocliloride, and then converted to a thiol group by reduction with dithiothrei tol (DTT). Then, a covalent bond (disulfide bond) is formed between the PDEA-formed lipoxyl group and the thiol group on the side of the immobilization carrier 3. That is, a surface thiol coupling is formed.
- DTT dithiothrei tol
- the protein to be immobilized is purified using the first tag portion, and the interaction between the second tag portion and the second tag binding site and the covalent bond between the reactive group and the protein are formed. By doing so, the protein to be immobilized can be immobilized on the immobilization carrier.
- the method for immobilizing a protein according to the present invention since the protein to be immobilized is purified using the first tag portion, the biological material containing contaminating proteins is removed, and the protein to be immobilized is removed. Can act on the immobilized carrier 3 at a high concentration.
- the protein can be concentrated to a high concentration in the vicinity of the immobilization carrier 3 in order to cause the interaction between the second tag portion and the second tag portion binding site. it can. Therefore, according to the method for immobilizing a protein according to the present invention, even when a small amount of protein, which is difficult to be present at a high concentration in the vicinity of the immobilization carrier 3 in the conventional method, is to be immobilized, contamination can be prevented.
- the protein to be immobilized can be covalently bound to the immobilization carrier 3 without immobilizing the protein nonspecifically.
- the sensor chip prepared by applying the protein immobilization method according to the present invention can be used in a system for detecting a test substance having an affinity for an immobilized protein.
- test substance means a substance having an affinity for the immobilized protein.
- the test substance may be any known compound or a novel compound, for example, nucleic acids, carbohydrates, lipids, proteins, peptides, amino acids, low-molecular organic compounds, and compounds prepared using combinatorial chemistry technology. Libraries, random peptide libraries produced by solid phase synthesis or phage display, or natural components derived from microorganisms, animals, plants, marine organisms, and the like.
- a prism 4 provided on a main surface opposite to a main surface provided with an immobilized carrier 3 on a substrate 1, and a prism 4 provided on a main surface.
- a light source 6 that impinges the polarized light 5 on the sensor chip via the prism, a detection unit 8 on which the reflected light 7 reflected by the metal film 2 is incident on the polarized light 5 incident via the prism 4, and an immobilization in which the protein is immobilized.
- a flow cell 9 in contact with the carrier 3.
- the solution containing the sample containing the test substance to be detected flows into the flow cell 9, and the dark portion of the reflected light 7 changes from I to
- the detector 8 detects the amount of shift to II.
- the change in mass on the surface of one sensor chip is plotted on the vertical axis as a result of detection, and the time change in mass is displayed as measurement data (one gram of sensor).
- the rate of this change in refractive index is substantially the same for all biomolecules (proteins, nucleic acids, and lipids), and interactions can be viewed in real time without labeling the biomolecules.
- any protein can be immobilized regardless of the type of protein, and at the same time, the protein can be immobilized firmly for a long period of time. Therefore, screening of new drug targets or new drug candidate compounds using various types of proteins becomes possible.
- FIG. 1 is a cross-sectional view of a main part of a sensor chip manufactured by applying the protein immobilization method according to the present invention.
- FIG. 2 is a schematic configuration diagram for explaining the configuration of an analyzer using the principle of SPR.
- FIG. 3 is a photograph showing the results of analysis of proteins (cyclophilin A and FKBP12) purified using a His tag by SDS-PAGE and CBB staining.
- FIG. 4 is a characteristic diagram showing one gram of a sensor when unpurified proteins (cyclophilin A and FKBP12) are concentrated (affinity concentration) on a sensor chip using a His tag.
- FIG. 5 is a photograph showing a result of analyzing a protein (cyclophilin A) purified using a FLAG tag by SDS-PAGE and CBB staining.
- Fig. 6 is a characteristic diagram showing a gram of a sensor when a protein (cyclophilin A) purified using FLAG is concentrated on a sensor chip using a His tag (affinity-concentration). .
- FIG. 7 shows the sensorgram of the protein (cyclophilin A) purified by FLAG tag and immobilized on the sensor chip via covalent bond (amin coupling) and His tag.
- FIG. Figure 8 shows that after purifying proteins (PPART and RAR- ⁇ ) with the FLAG tag, the purified protein was bound to the sensor chip via a covalent bond (amin coupling) and a His tag.
- FIG. 6 is a characteristic diagram showing a sensorgram when immobilized.
- FIG. 9 is a characteristic diagram showing the results of measuring the binding between cyclophilin A and cyclosporin A immobilized by applying the protein immobilization method according to the present invention, and the binding between FKBP12 and FK506 immobilized. is there. Explanation of symbols
- Comparative Example 1 a method for purifying a trace protein expressed in a wheat germ cell-free system using a His tag will be described.
- cyclophilin A hereinafter referred to as rcypj
- FKBP 12 hereinafter referred to as “FKBP”
- the above protein was subcloned into the plasmid vector pEU3- ⁇ (manufactured by Toyobo) for wheat germ cell-free system by genetic manipulation. It was made to become.
- the base sequence and amino acid sequence of the His tag were as shown below.
- PR0TEI0S manufactured by Toyobo Co., Ltd. was used as a wheat embryo cell-free system.
- each protein expression plasmid for a cell-free wheat germ cell constructed by genetic manipulation was used as type III, and the plasmid was prepared using tliermoT7 RNA polymerase (manufactured by Toyobo).
- mRNA was synthesized at 37 ° C for 4 hours.
- the synthesized niRNA was subjected to phenol / cloth-form treatment to remove proteins, and then exchanged with a buffer for PR0TEIOS by ethanol precipitation.
- protein was synthesized at 26 for 20 hours in a 0.3 ml reaction system based on the protocol of PR0TEIOS.
- a sample in which the same reaction was performed without using mRNA was also prepared as a control.
- About 0.3 ml of the synthesis reaction product is centrifuged at high speed.
- the collected beads are mixed with an elution buffer (PBS pH 7.4 / 0.05% Tween20 / 250 mM imidazole, etc.) 1 and left at room temperature for 5 to 10 minutes.
- the supernatant was collected as an eluate (E1).
- the same operation was performed once again, and the eluate (E2) was recovered.
- Fig. 3 shows the results of analysis of the sample obtained by the above-described operations by SDS-PAGE and CBB staining.
- lane A (apply) is the protein synthesis reactant before purification
- lane F (flow-through) is the residue after separation and recovery of beads
- lanes E1 and E2 are shown.
- the left lane of each lane A is a molecular weight marker.
- two bands (arrow “NS” in FIG. 3) were detected at around 50 kDa together with the target protein FKBP or Cyph. Since this band was also detected in the non-expression sample, it was inferred that the protein was intrinsic to the wheat germ cell-free system and had activity similar to the His tag.
- Cyph and FKBP were used as proteins.
- the protein is a plasmid vector for wheat germ cell-free system by genetic manipulation
- the cDNA was subcloned into PEU3-Ni1 to make a fusion protein with a His tag at the C-terminus.
- PR0TEIOS manufactured by Toyobo
- an NTA sensor chip prepared by the present inventors was used.
- the NTA sensor chip has a dextran disposed on a substrate.
- BIACORE S51 manufactured by Biacore
- mRNA and further proteins were synthesized in the same manner as in Comparative Example 1 from each protein expression plasmid for a wheat germ cell-free system constructed by genetic manipulation.
- a sample in which the same reaction was performed without using mRNA was also prepared as a control.
- About 0.3 ml of the synthesis reaction product was subjected to high-speed centrifugation (12000 g, 10 minutes) to remove the precipitate, and used as a protein sample or a control sample used for the following measurement.
- the CM5 sensor chip (manufactured by Biacore) is washed with pure water, and mixed with a mixture of 0.8 Nethyl-N '-(dime teyl aminopropyl) carbodi imide (EDC) 0.27M N-hydroxysucc inimide (NHS).
- EDC Nethyl-N '-(dime teyl aminopropyl) carbodi imide
- NHS N-hydroxysucc inimide
- the sensor chip was processed for 10 minutes. Subsequently, the sensor chip was treated for 2 hours with 16 mg / ml of N- (5-amino-to carboxypentyl) iminodiacetic acid, disodium salt, mono ydraie (AB-NTA). Next, the sensor chip was washed with pure water, and further washed with 50 mM NaOH and 50 HC1.
- NTA-sensor chip was used as NTA-sensor chip.
- one NTA sensor chip was set in BIACORE S51, and the system was filled with running buffer (PBS PH7.4 / 0.005. Tween20, etc.).
- Spot 1 was treated with 0.5 M NiCl 2 at a flow rate of 10 L / min for 1 minute (spot 2 was not treated), and Ni 2+ was bound only to spot 1 of the NTA sensor chip.
- the system both spots 1 and 2) was then treated with the protein sample or control sample (non-expressing sample) diluted 10-fold in running buffer at a flow rate of 10 L / min for 3 minutes.
- Figure 4 shows the sensorgram for the above operation.
- spot 1 (+ Ni ion)
- about 1700 RU of protein was bound on the sensor chip for Cyph and about 1800 RU for FKBP, whereas about 1500 MJ of protein was found on the sensor chip for the control sample. Bound. Therefore, when concentration (affinity concentration) is performed without purification, not only the target protein but also contaminating proteins derived from the cell-free system of wheat germ are concentrated on the sensor chip, and moreover, the target protein is more contaminated than the target protein. It was speculated that there was more protein.
- spot 2 (-Ni ion) had a binding amount of only about 200 RU in all samples, contaminant proteins bound with affinity for Ni ion in spot 1 as well as the target protein described above. was thought to be.
- Example 1 describes a method for purifying a trace protein expressed in a wheat germ cell-free system using a FLAG tag.
- Cyph was used as the protein.
- the above-mentioned protein was subcloned into the wheat embryo cell-free plasmid vector PEU3-NII by genetic manipulation, and a fusion protein with a His tag and a FLAG tag at the N-terminus was used. did.
- the FLAG tag is the first tag section in the present invention.
- the nucleotide and amino acid sequences of the His tag and FLAG tag sequences were as shown below.
- PR0TEI0S manufactured by Toyobo Co., Ltd. was used as a wheat embryo cell-free system.
- niRNA and proteins were synthesized in the same manner as in Comparative Example 1 from an expression plasmid for a wheat embryo cell-free system constructed by genetic manipulation.
- a sample in which the same reaction was performed without using DLRNA was also prepared.
- about 0.3 ml of the synthesis reaction product was subjected to high-speed centrifugation (12000 g, 10 minutes) to remove the precipitate, mixed with M2 agarose (Sigma) 25 ⁇ 1, and left at room temperature for 1 hour. Collect M2 agarose from the above mixture by low-speed centrifugation (2000g, 3 minutes) and buffer
- the mixture was mixed with 0.1 mg / ml of FLAG peptide (manufactured by Sigma) 501 and left at room temperature for 1 hour. T JP2004 / 012447 The supernatant separated from the mixture by low-speed centrifugation was recovered as an eluate (E1). The same operation was performed once again, and the eluate (E2) was recovered.
- FIG. 5 shows the results of analyzing the samples obtained by the above operations by SDS-PAGE and CBB staining.
- lane A (Apply) is a protein synthesis reaction product before purification
- lanes E1 and E2 show an eluate (E1) and an eluate (E2), respectively.
- the left lane of each lane A is a molecular weight marker.
- E1 and E2 only the target protein, Cyph, was detected, and contaminating protein that could cause a problem was not detected.
- Example 2 the present invention is applied to a method in which a trace protein expressed in a wheat germ cell-free system is purified by FLAG, and then concentrated on a sensor chip with a His tag (affinity-concentration). explain.
- Cyph was used as the protein.
- the cDNA was subcloned into the wheat embryo cell-free plasmid vector PEU3-NII by genetic manipulation, with a His tag and FLAG fragment at the N-terminus.
- the fusion protein was added.
- the FLAG tag is the first tag part in the present invention
- the His tag is the second tag part.
- PR0TEI0S Toyobo Co., Ltd.
- An NTA sensor chip (Biaco chip (Biacore)) was used as the sensor chip.
- the NTA sensor chip has a dextran disposed on a substrate.
- BIACORE3000 manufactured by Biacore
- mRNA and protein were synthesized in the same manner as in Comparative Example 1 from 5 g of an expression plasmid for a cell-free wheat germ constructed by genetic manipulation. At this time, a sample in which the same reaction was performed without using mRNA (non-expression sample) was also prepared as a control. Next, about 0.3 ml of the synthesis reaction product was subjected to high-speed centrifugation (12000 g, 10 minutes) to remove the precipitate, mixed with M2 agarose (manufactured by Sigma) 251, and left at room temperature for 1 hour. Collect M2 agarose from the above mixture by low-speed centrifugation (2000g, 3 minutes), and buffer
- the mixture was mixed with 0.1 mg / ml of FLAG peptide (manufactured by Sigma) and left at room temperature for 1 hour.
- the supernatant separated from the mixture by low-speed centrifugation was collected as an eluate.
- the eluate collected from a sample synthesized using mRNA was used as a protein sample, and the eluate collected from a non-expression sample was used as a control sample.
- the NTA sensor chip was set on the BIACORE3000, and the system was filled with a running buffer (such as PBS pH 7.4 / 0.005% Tween20).
- the system was then treated with 0.5M NiCl, at a flow rate of 10 / L / min for 1 minute, to allow N to bind to the NTA sensor chip.
- the system was then treated with the protein or control sample for 1 minute at a flow rate of 10 L / min.
- Figure 6 shows the sensorgram for the above operation. Approximately 5100 RU of protein bound to the sensor chip in the evening protein sample, whereas only about 60 IOJ of protein bound to the sensor chip in the control sample. The results showed that once purified with the FLAG tag, only the target protein, Cypli, was effectively concentrated on the sensor chip.
- Example 3 a small amount of protein expressed in a wheat germ cell-free system by applying the present invention was purified using a FLAG tag, and then covalently bonded to a sensor chip (amin coupling). And a method for immobilizing the purified protein via a His tag.
- Cyph was used as the protein.
- cDNA was subcloned into the above-mentioned protein into a wheat embryo cell-free plasmid vector pEU3-NII by genetic manipulation, and a His tag and a FLAG tag were added to the N-terminus. It was made to be a fusion protein.
- the FLAG tag is the first tag unit in the present invention
- the His tag is the second tag unit.
- PR0TEI0S manufactured by Toyobo Co., Ltd.
- the sensor chip the NTA sensor chip (Biaco chip (Biacore)) used in Example 2 was used.
- the measurement device used was BIAC0RE3000 (manufactured by Piacore).
- mRNA and protein were synthesized in the same manner as in Example 2, and the eluate was recovered.
- the eluate collected from the sample synthesized using mRNA was used as the protein sample for fixation, and the eluate collected from the non-expression sample was solidified. 2004/012447 Used as control sample for regular use.
- the NTA sensor chip was set on the BIACORE3000, and the system was filled with running buffer (such as PBS pH 7.4 / 0.0053 ⁇ 4 Tween20).
- running buffer such as PBS pH 7.4 / 0.0053 ⁇ 4 Tween20.
- the system was treated with 0.5 M NiCl 2 at a flow rate of 10 wL / min for 1 minute to bind N 2 on one NTA sensor chip.
- the fixed reaction was terminated by decomposing the unreacted active intermediate by treating for 7 minutes and treating the system with 25 OmM imidazole buffer for 1 minute at a flow rate of 10 nL / min.
- the protein was removed from the surface of the sensor chip, and the sensorgram in the above procedure is shown in Figure 7.
- About 5600 IUJ of protein was immobilized on the sensor chip for the protein sample for fixation, whereas about 5600 IUJ for the control sample for fixation. Only the 280R11 protein was immobilized on the sensor chip, indicating that only the target protein, Cyph, was effectively immobilized on the sensor chip.
- Example 4 describes a method for immobilizing a protein in the same manner as in Example 3, except that PPAR r and RAR- ⁇ were used as the protein.
- BIACORE S51 manufactured by Biacore
- one NTA sensor chip used in Comparative Example 2 was used as a sensor chip.
- Fig. 8 shows the sensorgram in the above operation.
- PPAR T about 4700 RU of protein was fixed.
- RAR- ⁇ about 3400RU of protein is immobilized. It was.
- Example 5 describes a method for measuring the protein-test substance interaction using a protein expressed in a wheat germ cell-free system immobilized on a sensor chip by applying the present invention.
- Cyph and FKBP were used as proteins.
- test substances cyclosporin A, which is known to bind to Cyph, and FK506, which is known to bind to FKBP, were used.
- BIACORE S51 manufactured by Biacore
- the NTA sensor chip used in Comparative Example 2 was used as a sensor chip.
- the operation of fixing the evening protein to one sensor chip was performed in the same manner as in Example 3.
- FKBP was fixed at about 2000 RU at spot 1 and Cyph was fixed at about 3400 RU at spot 2 of the same flow cell.
- LuM cyclosporin A was injected into the above sensor chip for 1.5 minutes, left for about 8 minutes until the response returned to the baseline, and then luM FK506 was injected for 1.5 minutes.
- Figure 9 shows the sensorgram for the above operation. When cyclosporin A was injected, a response of about 43 RU was detected only in the Cyph spot, and when FK506 was injected, a response of about 51 RU was detected only in the FKBP spot.
- a protein to be immobilized having a first tag portion and a second tag portion is purified using the first tag portion, and the reactive group on the immobilization carrier side is activated. Subsequently, the second tag portion of the protein is allowed to interact with the immobilized carrier, and the protein is covalently bonded to the immobilized carrier.
- Tan according to the present invention According to the protein immobilization method, various proteins of interest can be firmly immobilized on the immobilization carrier regardless of the amount of the target protein and without non-specifically immobilizing contaminating proteins. can do. Sequence listing free text
- SEQ ID NOs: 1 and 2 are the base sequence and amino acid sequence of a His tag (including a stop codon), respectively.
- SEQ ID NOS: 3 and 4 are the base sequence and amino acid sequence of the His tag and FLAG tag (including the start codon), respectively.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005513496A JP4754352B2 (ja) | 2003-08-29 | 2004-08-24 | タンパク質の固定化方法 |
US10/569,883 US7754497B2 (en) | 2003-08-29 | 2004-08-24 | Method for immobilizing proteins |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-307588 | 2003-08-29 | ||
JP2003307588 | 2003-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005022156A1 true WO2005022156A1 (ja) | 2005-03-10 |
Family
ID=34269446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/012447 WO2005022156A1 (ja) | 2003-08-29 | 2004-08-24 | タンパク質の固定化方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7754497B2 (ja) |
JP (1) | JP4754352B2 (ja) |
WO (1) | WO2005022156A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008545984A (ja) * | 2005-06-09 | 2008-12-18 | バブラハム・インスティテュート | 繰り返し調製可能なタンパク質アレイ |
JP2011514972A (ja) * | 2008-03-11 | 2011-05-12 | アイティーアイ・スコットランド・リミテッド | 表面接着物 |
WO2018154390A1 (en) | 2017-02-27 | 2018-08-30 | Teijin Pharma Limited | Humanized antibody for treating or preventing cognitive disorders, process for producing the same, and agent for treating or preventing cognitive disorders using the same |
JP2019529904A (ja) * | 2016-09-12 | 2019-10-17 | エージェリオン・ファーマシューティカルズ・インコーポレーテッド | 抗レプチン中和抗体を検出する方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2378936B1 (es) * | 2009-12-01 | 2013-08-13 | Universidad De Zaragoza | Soportes biofuncionalizados covalentemente. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10512140A (ja) * | 1994-12-23 | 1998-11-24 | ルードヴィッヒ・インスティテュート・フォア・キャンサー・リサーチ | アッセイ、受容体蛋白質およびリガンド |
JP2001505764A (ja) * | 1996-11-06 | 2001-05-08 | ベー エル アー ハー エム エス ディアグノスティカ ゲーエムベーハー | レセプター結合アッセイ、該レセプター結合アッセイに適した組換え融合レセプター、その調製のためのベクター、及び該レセプター結合アッセイを実施するためのキット |
WO2002033044A2 (en) * | 2000-10-18 | 2002-04-25 | The Regents Of The University Of California | Methods of high-throughput screening for internalizing antibodies |
JP2002523059A (ja) * | 1998-08-19 | 2002-07-30 | ノボザイムス アクティーゼルスカブ | 基質置換での酵素活性スクリーン |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2098960C (en) * | 1992-07-10 | 2004-11-02 | Richard Barner | Bio specifically recognizing surfaces on solid supports and method for their preparation |
GB9518429D0 (en) * | 1995-09-08 | 1995-11-08 | Pharmacia Biosensor | A rapid method for providing kinetic and structural data in molecular interaction analysis |
US6576478B1 (en) * | 1998-07-14 | 2003-06-10 | Zyomyx, Inc. | Microdevices for high-throughput screening of biomolecules |
US6406921B1 (en) * | 1998-07-14 | 2002-06-18 | Zyomyx, Incorporated | Protein arrays for high-throughput screening |
JP3345401B2 (ja) * | 1998-08-25 | 2002-11-18 | ユニバーシティ オブ ワシントン | 複合した混合物中のタンパク質またはタンパク質機能の迅速定量分析 |
FR2786564B1 (fr) | 1998-11-27 | 2001-04-13 | Commissariat Energie Atomique | Capteur de pression a membrane comportant du carbure de silicium et procede de fabrication |
US20020019009A1 (en) * | 1999-12-09 | 2002-02-14 | Roggen Erwin Ludo | High throughput screening (HTS) assays |
WO2001072458A1 (en) * | 2000-03-27 | 2001-10-04 | Zyomyx, Inc. | Site-specific, covalent bioconjugation of proteins |
AU2001269906A1 (en) * | 2000-06-19 | 2002-01-02 | Zyomyx, Inc. | Methods for immobilizing polypeptides |
CA2434139C (en) * | 2001-01-23 | 2014-05-27 | President And Fellows Of Harvard College | Nucleic-acid programmable protein arrays |
DE10164309A1 (de) * | 2001-12-28 | 2003-07-10 | Fraunhofer Ges Forschung | Verbesserte strukturiert-funktionale Bindematrices für Biomoleküle |
JP2004170195A (ja) | 2002-11-19 | 2004-06-17 | Reverse Proteomics Research Institute Co Ltd | タンパク質の固定化方法 |
-
2004
- 2004-08-24 WO PCT/JP2004/012447 patent/WO2005022156A1/ja active Application Filing
- 2004-08-24 JP JP2005513496A patent/JP4754352B2/ja not_active Expired - Fee Related
- 2004-08-24 US US10/569,883 patent/US7754497B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10512140A (ja) * | 1994-12-23 | 1998-11-24 | ルードヴィッヒ・インスティテュート・フォア・キャンサー・リサーチ | アッセイ、受容体蛋白質およびリガンド |
JP2001505764A (ja) * | 1996-11-06 | 2001-05-08 | ベー エル アー ハー エム エス ディアグノスティカ ゲーエムベーハー | レセプター結合アッセイ、該レセプター結合アッセイに適した組換え融合レセプター、その調製のためのベクター、及び該レセプター結合アッセイを実施するためのキット |
JP2002523059A (ja) * | 1998-08-19 | 2002-07-30 | ノボザイムス アクティーゼルスカブ | 基質置換での酵素活性スクリーン |
WO2002033044A2 (en) * | 2000-10-18 | 2002-04-25 | The Regents Of The University Of California | Methods of high-throughput screening for internalizing antibodies |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008545984A (ja) * | 2005-06-09 | 2008-12-18 | バブラハム・インスティテュート | 繰り返し調製可能なタンパク質アレイ |
JP2011514972A (ja) * | 2008-03-11 | 2011-05-12 | アイティーアイ・スコットランド・リミテッド | 表面接着物 |
JP2019529904A (ja) * | 2016-09-12 | 2019-10-17 | エージェリオン・ファーマシューティカルズ・インコーポレーテッド | 抗レプチン中和抗体を検出する方法 |
JP7139317B2 (ja) | 2016-09-12 | 2022-09-20 | アムリット・ファーマシューティカルズ・インコーポレイテッド | 抗レプチン中和抗体を検出する方法 |
US11709166B2 (en) | 2016-09-12 | 2023-07-25 | Amryt Pharmaceuticals Inc. | Methods of detecting anti-leptin neutralizing antibodies |
WO2018154390A1 (en) | 2017-02-27 | 2018-08-30 | Teijin Pharma Limited | Humanized antibody for treating or preventing cognitive disorders, process for producing the same, and agent for treating or preventing cognitive disorders using the same |
WO2018154392A1 (en) | 2017-02-27 | 2018-08-30 | Teijin Pharma Limited | Humanized antibody for treating or preventing cognitive disorders process for producing the same, and agent for treating or preventing cognitive disorders using the same |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005022156A1 (ja) | 2006-10-26 |
US20090098568A1 (en) | 2009-04-16 |
US7754497B2 (en) | 2010-07-13 |
JP4754352B2 (ja) | 2011-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6475630B2 (ja) | ストレプトアビジン突然変異タンパク質およびそれらを使用する方法 | |
JP4875846B2 (ja) | 固定化方法 | |
Le Brun et al. | The structural orientation of antibody layers bound to engineered biosensor surfaces | |
JP5553336B2 (ja) | ペプチド、当該ペプチドの用途及び生産方法並びに当該ペプチドが固定化された固相及びその生産方法 | |
Hahnefeld et al. | Determination of kinetic data using surface plasmon resonance biosensors | |
Islam et al. | Direct construction of an open-sandwich enzyme immunoassay for one-step noncompetitive detection of thyroid hormone T4 | |
Shen et al. | Surface orientation control of site-specifically immobilized nitro-reductase (NfsB) | |
US20100203653A1 (en) | Protein G-Oligonucleotide Conjugate | |
KR101141737B1 (ko) | 신규한 항체 고정화용 융합단백질 | |
Ferrari et al. | Binary polypeptide system for permanent and oriented protein immobilization | |
Pollheimer et al. | Reversible biofunctionalization of surfaces with a switchable mutant of avidin | |
WO2010047419A1 (en) | Immobilization substrate and method for producing the same | |
WO2005075996A1 (ja) | 表面プラズモン共鳴抗体アレイセンサ作製用基板及びその作製方法 | |
WO2005022156A1 (ja) | タンパク質の固定化方法 | |
Liu et al. | An optical surface plasmon resonance biosensor for determination of tetanus toxin | |
EP1379644A2 (en) | Protein analysis by means of immobilized arrays of antigens or antibodies | |
KR101766271B1 (ko) | 면역화학적 분석에서 표적 특이적 신호증폭을 담당하는 범용성 재조합 2차 항체 유사체 | |
Chen et al. | A Metal‐Chelating Piezoelectric Sensor Chip for Direct Detection and Oriented Immobilization of PolyHis‐Tagged Proteins | |
CN105466912B (zh) | 一种检测阿尔法突触核蛋白的方法 | |
Tang et al. | Two-dimensional protein nanoarray as a carrier of sensing elements for gold-based immunosensing systems | |
KR100979282B1 (ko) | 실리카 결합단백질을 이용한 바이오-실리카 칩 및 그제조방법 | |
TW201803888A (zh) | 藉由IgG結合肽之抗體之特異性裝飾 | |
Ricklin | Surface plasmon resonance applications in drug discovery: with an emphasis on small molecule and low affinity systems | |
JP2005112800A (ja) | Nmrによる膜蛋白質とリガンドの相互作用解析に用いる膜蛋白質再構成法 | |
Franklin et al. | Seeing beneath the surface of biomolecular interactions: real-time characterization of label-free binding interactions using Biacore’s optical biosensors |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005513496 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10569883 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |