WO2005094187A2 - ラベル用物質とキメラ物質、これらの物質の作製方法、並びに該ラベル用物質を用いて生体物質を捕捉、構造解析又は/及び同定する方法 - Google Patents
ラベル用物質とキメラ物質、これらの物質の作製方法、並びに該ラベル用物質を用いて生体物質を捕捉、構造解析又は/及び同定する方法 Download PDFInfo
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- WO2005094187A2 WO2005094187A2 PCT/JP2005/006077 JP2005006077W WO2005094187A2 WO 2005094187 A2 WO2005094187 A2 WO 2005094187A2 JP 2005006077 W JP2005006077 W JP 2005006077W WO 2005094187 A2 WO2005094187 A2 WO 2005094187A2
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- 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
- G01N33/531—Production of immunochemical test materials
- G01N33/532—Production of labelled immunochemicals
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- 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
- Y10T436/13—Tracers or tags
Definitions
- the present invention relates to a label substance capable of binding to a probe substance capable of interacting with a biological substance and having a function of specifically recognizing an antibody, and a bioassay technique using the label substance.
- a substance serving as a probe for detecting a target substance (hereinafter, referred to as a probe) is provided on a surface of a substrate such as a metal thin film, synthetic resin, glass, or a solid phase such as a bead.
- a probe substance After immobilizing a “probe substance” in advance, a technique for capturing and recovering a target substance by utilizing specific interaction between the substances, and analyzing the structure of the target substance by mass spectrometry or the like can be mentioned. If this technique is used, it is possible to detect substances that interact with the probe substance.
- a substance called a linker, spacer, tag, or the like is interposed or labeled between the probe substance and the solid phase surface, so that the probe is formed. Attempts may be made to adjust the binding force between the substance and the solid surface, to eliminate steric hindrance, and to improve the efficiency of use of the reaction space.
- Such technologies have become important elemental technologies such as surface plus, biosensor technology such as Montreson sensor, microarray chip integrating DNA and protein, and immunoprecipitation.
- the "avidin-biotin binding system” is widely and generally used for immobilizing a probe substance on the surface of a solid phase.
- Avidin is a glycoprotein that binds specifically to biotin.
- This avidin has been used to immobilize DNA, peptides, proteins, etc., which have been biotinylated because of its extremely high affinity for biotin.
- avidin-pyotin system is used for immunological assays such as Enzyme Inomatousie (EIA). It is also widely used in the field of fixed tissue staining.
- Patent Document 1 discloses that after binding a biotinylated antigen or antibody to immobilized avidin or streptavidin, the sample is contacted with a solution of the antibody or a labeled compound that specifically binds to the antigen in the sample.
- Patent Document 2 discloses a technique for obtaining a DNA microarray by spotting a solution containing a biotinylated probe DNA on a solid-phased membrane on which avidin molecules are immobilized in a single layer.
- Non-Patent Document 1 discloses the following technology. First, the recombinant protein fused with the epitope peptide tag is expressed, and the antibody beads are subjected to cell extraction using beads on which an antibody that specifically recognizes the epitope peptide tag is immobilized. Mix with liquid. The target protein in the cell extract is trapped via the recombinant protein, the beads are washed well, and the epitope 'tag peptide is added in an excessive amount, and the protein trapped on the beads is added to the added peptide. The target protein (and the fusion of the recombinant protein) is eluted into the liquid phase by substituting
- Non-Patent Document 1 discloses an interaction analysis technique using a fusion having a structure of "protein-peptide tag". Since the protein-peptide tag fusion is a fusion of homologous substances arranged in series by amino acids, it is a substance that can be synthesized by using a gene translation system in a living body.
- Patent Document 1 JP-A-09-133683.
- Patent Document 2 JP-A-2002-153272.
- Non-Patent Document 1 Experimental Medicine Separate Volume “Experimental Lecture in the Post-Genome Era” 2 “Proteome Analysis Method Z Protein Expression” Advanced Technology of Functional Analysis and Genomic Medicine “Drug Discovery Research” (Yodosha), Toshiaki Isobe, Nobuhiro Takahashi, P 166—174.
- biotin since biotin has low solubility, it has a basic problem that it is difficult to use it as a linker with poor handling properties. Since this biotin itself easily interacts with an unspecified protein or the like, it is not preferable to use a biotin-dried substance as the probe substance, particularly when the target substance to be identified is a protein or the like.
- a biotinylated substance when introduced into cells, a biopolymer containing an unspecified number of proteins is non-specifically adsorbed to the biotinylated substance, and this is used as a probe substance. It is also undesirable to do so.
- a conventional interaction analysis technique using a "protein-epitope 'tag peptide fusion” is a concept in which substances composed of amino acids are fused to each other. This is based on the technology of synthesizing a protein-epitope 'tag peptide fusion using an intracellular translation system.
- the present invention provides a label substance that can be reversibly fixed (reversibly attached and detached) to a solid phase surface, facilitates the recovery of a target substance using the label substance, and It is a main object of the present invention to provide a technique capable of reliably and accurately identifying a target biological substance interacting with a probe substance bound to a substance for use.
- an organic compound having a chemical structure capable of binding to a probe substance capable of interacting with a biological substance and “an antibody specifically bound to the organic compound and specifically recognized as an antibody” And a peptide for labeling.
- the substance constitution of the "label substance” is simply described as “organic compound peptide”.
- a probe substance other than a peptide or protein capable of interacting with a biological substance and "a peptide which is directly or indirectly bound to the probe substance and specifically recognized by an antibody” Provides a chimeric material that is also composed of power.
- the “indirect binding” described above means a binding in which another substance is interposed between the probe substance and the peptide.
- the substance composition of the "chimeric substance” is briefly described as follows: (1) “probe substance (other than peptide or protein)-peptide”; (2) “probe substance (other than peptide or protein)-intermediate substance. —Peptide ”, which is any one of the above (1) and (2).
- the "probe substance” is a substance other than a peptide or a protein, that is, a substance other than a substance having an amino acid sequence, and particularly a low molecular weight compound can be considered. This makes it possible to provide a completely new “chimeric substance”, which is a complex of a peptide and a substance completely different from the peptide, and is useful for trapping a target substance.
- this "chimeric substance" is not composed only of amino acids and cannot be synthesized by a gene translation system of a living body, the conventional protein-epitope • tag peptide fusion composed of only amino acids is It can be said that it is a complex between heterogeneous substances that has completely different ideas.
- any substance other than a peptide or protein, other than a low-molecular compound can be appropriately adopted according to the purpose.
- nucleic acids, lipids, sugars, low molecular hormones (excluding peptide hormones), toxic substances, endocrine disruptors, neurotransmitters and the like can be used. If a toxic substance or an endocrine disrupting substance is used, the substance that interacts with the substance can be identified, so that the causative substance such as toxicity and the mechanism of the toxicity can be identified.
- the "organic compound” which is an essential member of the labeling substance according to the present invention, and " ⁇ " is an “organic compound” (intercalating substance) which can be a member of the chimeric substance according to the present invention mainly comprises: It is a substance that functions as a spacer.
- the organic compound is not particularly limited as long as it has a chemical structure capable of binding to the probe substance.
- an oil having a carboxyl group at at least one terminal It is a soluble or water-soluble organic compound that is capable of binding to the peptide via the carboxyl group.
- the "peptide” which is an essential member of the labeling substance or chimeric substance according to the present invention, is a peptide that is specifically recognized by an antibody and is capable of binding to an organic compound or a probe substance. If so, it is not narrowly limited.
- an epitope-tag peptide such as a flag (FLAG) peptide (amino acid sequence: Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys) can be employed.
- FLAG flag peptide
- the antibody that recognizes this peptide is an anti-epitope ′ tag peptide antibody, for example, an anti-flag (FLAG) peptide antibody.
- an organic compound, a peptide bound to the organic compound and specifically recognized by an antibody, and a powerful labeling substance are linked via one terminal functional group of the organic compound.
- the present invention provides a “method for producing a label substance” for producing the above-described label substance or chimeric substance based on a solid phase method.
- Producing or manufacturing a labeling substance based on the “solid phase method” has the advantage that its synthesis can be easily controlled.
- a protecting group is introduced into one terminal functional group of an organic compound
- another free terminal functional group is immobilized on a solid support, and then the protecting group of the organic compound is removed.
- a labeling substance consisting of a substance consisting of “organic compound peptide” can be prepared.
- the one-terminal functional group is immobilized on a solid phase, and then an organic compound is bonded to the N-terminal or C-terminal of the peptide.
- a labeling substance consisting of a substance consisting of “organic compound-peptide” can be prepared.
- probe substance-organic compound-peptide a probe substance such as a low-molecular compound is introduced into the free terminal functional group of the organic compound in the label substance thus produced.
- probe substance-organic compound-peptide a probe substance-organic compound-peptide that also has a material composition ability can be obtained.
- an organic compound having a chemical structure capable of binding to a probe substance capable of interacting with a biological substance, and a peptide which binds to the organic compound and is specifically recognized by an antibody
- the present invention provides a "biological substance capturing method" using a powerful label substance.
- A a sample solution containing a biological substance complex composed of the probe substance to which the label substance is bound and a biological substance interacting with the probe substance is used. And (B) a step of proceeding the interaction between the antibody immobilized on the solid phase surface and the peptide in the label substance constituting the biomaterial complex.
- a “method of capturing biological material” that is performed at least.
- a biological substance complex which is a constituent substance of "biological substance-probe substance-label substance (organic compound peptide)"
- biological substance-probe substance-label substance organic compound peptide
- A biological substance-probe substance-label substance
- B material composition of “biological substance—probe substance—label substance (organic compound—peptide) antibody solid phase” is formed.
- the biological substance can be captured on the solid phase surface via the label substance or the like.
- a label substance comprising: an organic compound bound to a probe substance interacting with a biological substance; and a peptide bound to the organic compound and capable of specifically recognizing an antibody.
- the bond between the “biological substance, the probe substance, the label substance (organic compound, peptide) and the antibody solid phase” and the “peptide / antibody” in the substance composition is reversibly removable. If it is capable, it has the following characteristics, so that the bond can be dissociated under mild conditions.
- the biological substance complex having the structure of "biological substance probe substance labeling substance (organic compound-peptide)” is eluted and recovered by solid phase surface force.
- biological substance probe substance labeling substance organic compound-peptide
- the present invention provides a “method of recovering intracellular biological material”.
- an organic compound, a peptide bound to the organic compound and capable of specifically recognizing an antibody, and a powerful labeling substance are combined with one terminal functional group of the organic compound.
- a substance having a structure of “organic compound peptide” is labeled (labeled) with respect to the probe substance to obtain “probe substance—organic compound—peptide”. Then, this is introduced into a cell by a predetermined method, and a biological substance complex called “intracellular biological substance—organic compound peptide” is obtained in the cell, taken out of the cell, and collected.
- the “intracellular biological substance” includes, for example, proteins, peptides, nucleic acids, sugars, lipids, hormones and the like.
- the biological substance complex in the sample solution undergoes a procedure of dissociation, elution, and recovery after being captured on the solid phase surface by using the specific binding of the peptide of the label substance and the antibody, and finally, In addition, it is possible to analyze and identify biological materials in cells.
- the “probe substance” in the present invention is a substance that serves as a probe (detector) for a target substance to be interacted with, and the “label substance” is chemically labeled on the probe substance. Substance.
- the "chimeric substance” is, for example, a heterologous substance such as a "low molecular compound” and a “peptide”, a “nucleic acid” and a “peptide”, a “sugar” and a “peptide”, a “lipid” and a “peptide”.
- a heterologous substance such as a "low molecular compound” and a “peptide”
- a “nucleic acid” and a "peptide” a "peptide”
- a “sugar” and a “peptide” a "lipid” and a “peptide”.
- Interaction broadly means a non-covalent bond, a covalent bond, a chemical bond including a hydrogen bond, or a dissociation between substances.
- hybridization is a complementary bond between nucleic acids (nucleotide chains).
- Macromolecule, macromolecule, low molecule, low molecule Widely encompasses specific binding or association of low molecules.
- Epitope 'tag peptide is an oligopeptide of about 10 amino acids that is specifically recognized by an epitope (antigenic determinant) portion of an antibody.
- epitope antigenic determinant
- the method using the label substance or the chimeric substance according to the present invention can be reversibly attached to and detached from the solid phase surface, so that the solid phase surface force can be dissociated and eluted under very mild conditions. Therefore, it is possible to easily and freely capture and recover the target biological substance trapped by the probe substance bound to the label substance or the probe substance constituting the chimeric substance.
- control of synthesis can be freely performed. For example, it is possible to freely adjust the amphiphilicity of the organic compound bound to the peptide, select or adjust the structure of the organic compound, and design the molecular length of the peptide or organic compound according to the purpose. .
- FIG. 1 is a schematic diagram showing the concept and form of a labeling substance and a chimeric substance according to the present invention. This will be described based on 1.
- the symbol L represents the "substance for labeling" of the present invention
- the symbol H represents one embodiment of the "chimeric substance” of the present invention (the probe substance and the peptide are separated via an organic compound). Example of a combined configuration) is shown.
- chimeric substances having a structure in which a probe substance and a peptide are directly bonded can also be adopted, and such substances are also within the scope of the present invention.
- the labeling substance L is composed of an organic compound represented by the symbol S, a peptide T bound to one end S of the organic compound S, and a force.
- the organic compound S which is an essential member of the label substance L, is as narrow as possible as long as it has a chemical structure capable of binding to the probe substance P that can interact with a biological substance. Not limited.
- Examples of the organic compound S include a fat-soluble or water-soluble organic compound having a carboxyl group at at least one terminal S.
- the organic compound S can form an amide bond with the peptide T via a hydroxyl group.
- the kinetics of the uptake of the labeling substance L into cells can be adjusted, and the uptake of the labeling substance L in the Assy system can be adjusted. There are advantages to being able to adjust the handling and gender.
- the organic compound S functions as a spacer
- a compound having a linearly extending structure is particularly preferable, and the molecular length may be designed according to the purpose or need.
- the organic compound S considered to be particularly suitable for the labeling substance L according to the present invention is a water-soluble organic compound having the following chemical structure (see chemical formula 1). This organic compound has a polyether chain and has carboxylic acids at both ends. [0059] [Formula 1]
- next candidate organic compound S has a polyether chain as described above, and has an amino group at one end (refer to Formula 2).
- organic compound S a fat-soluble organic compound having the following chemical structure (see chemical formula 3) can also be employed.
- the organic compound S has an alkyl chain, and has carboxylic acid at both ends. Since such organic compound S is fat-soluble, it easily penetrates a membrane having a high affinity for a biological membrane.
- the next candidate for the organic compound S is a fat-soluble organic compound having an alkyl chain as described above and having an amino group at one end (see Chemical Formula 4).
- the peptide T which is an essential member of the labeling substance L and the chimeric substance H, can be employed as long as it is a peptide that the antibody specifically recognizes.
- the binding terminal of the peptide T to the organic compound S or the probe substance P is not particularly limited, and may be any of the C terminal and the N terminal.
- the peptide T can function as an antibody-binding tag.
- a flag peptide amino acid sequence: Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys
- Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys which is a type of epitope-peptide tag, can be adopted according to the purpose.
- the peptide T may be replaced with one amino acid residue within a range that can be recognized by the antibody.
- FIG. 2 is a diagram schematically showing a state in which the antibody peptide T immobilized on the surface of the solid phase is specifically recognized.
- reference symbol F in FIG. 2 indicates a solid surface.
- the solid surface F represents a part of the surface of a flat substrate or the surface of a bead.
- the solid phase surface F is, for example, previously subjected to a surface treatment capable of immobilizing the antibody indicated by the symbol A.
- the solid phase surface F itself is not limited to a narrow one, and any surface configuration or material that can securely immobilize the antibody A may be used!
- Antibody A is an anti-peptide T antibody that can specifically recognize peptide T.
- FIG. 2 shows the recognition of the peptide T in the substance A for antibody A and S for labeling.
- FIG. 2 shows that a probe substance P bonded to one end of an organic compound S serving as a spacer and a liquid supply, addition, injection, etc. to a solid phase surface F region.
- Whether or not the biological substance B has interacted with the probe substance P can be detected by using a known detection principle such as a surface plasmon resonance principle or a crystal oscillator principle.
- the probe substance P may be a low-molecular compound as a representative example.
- nucleic acids other than peptides or proteins, lipids, sugars, low-molecular hormones (excluding peptide hormones), endocrine disruptors, Toxic substances, neurotransmitters and the like can also be mentioned.
- the probe substance P is a “pharmaceutical candidate substance”
- the partner biological substance B interacting with the probe substance P can be identified, the probe substance P itself is involved in the biological substance B. It can be a drug targeting disease.
- the label substance L can preferably be produced or manufactured based on a so-called "solid phase method".
- solid phase method lanthanum (manufactured by Mimotopes) can be used as the solid-support (solid-support) indicated by the symbol X in FIG. 3 and the like.
- a solid support such as polystyrene can be used. If the label substance is prepared or manufactured based on the “solid phase method”, the control of the synthesis becomes easier.
- the Flag peptide T is used under acidic conditions.
- a carboxylic acid that can be cleaved from the peptide and that becomes a carboxylic acid having a cleaved peptide terminal can be used.
- linker Y for example, a trityl linker can be used.
- chlorotrityl linker, alkoxybenzyl linker, benzyl linker and the like can be used.
- a known Fmoc method can be used for the extension reaction of peptide T. That is, the amino acid protected with the protecting group Fmoc (the amino acid side chain is protected with a t-butyl group) is coupled to the solid support X.
- This coupling is performed by using diisopropylcarbodiimide (hereinafter referred to as DIC) or the like as a condensing agent in the presence of 1-hydroxybenzotriazole (hereinafter referred to as HOBt) in DMF at room temperature for several hours. Let react for hours. Then DMF
- DIC diisopropylcarbodiimide
- HOBt 1-hydroxybenzotriazole
- the elongation of peptide T proceeds by leaving the protecting group Fmoc in a 20% piperidine (DMF) solution at room temperature for 30 minutes to deprotect, washing, and repeating the above procedure. be able to.
- DMF piperidine
- the amino acid sequence is Asp—Tyr—Lys—Asp—Asp—Asp—Asp—Lys. If it is desired to extend, an amino acid residue is added.
- Fig. 3 discloses a configuration in which a lysine residue (Lys) is additionally introduced at the terminal of the Flag peptide (symbol T). The added lysine residue (Lys)
- this introduction method can be performed using DIC or the like as a condensing agent.
- the organic compound S in addition to the water-soluble substance shown in FIG. 4 (the substance of the chemical formula 2), the same water-soluble substance of the chemical formula 1 or a fat-soluble substance such as the chemical formulas 3 and 4 described above. (Alkyl chains) can also be employed.
- labeling substance L amphiphilic, it seems effective to introduce an alkyl chain onto the amino group of the terminal lysine residue of the Flag peptide.
- a labeling substance L having a chemical structure as shown in FIG. 5 is preferable because it shows amphipathicity.
- chimera substance H example in which organic compound S is interposed, see FIG. 1 and the like
- Three preferred embodiments according to the “method of manufacturing” will be described in order with reference to FIGS.
- the case where the probe substance P is a low molecular compound will be described as a representative example.
- FIG. 6 shows a reaction when the retinoid receptor monomer indicated by the symbol P is amide-bonded to the terminal amino group of the labeling substance L.
- the organic compound S which is a spacer, whose free end is a carboxyl group is used, and is denoted by the symbol P in FIG. 7 via dihydroxysuccinimide (N-hydroxysuccinimide).
- the low-molecular-weight drug candidate substance P in which the amino group terminal is bromoacetylated, and one terminal of the organic compound S, which is a spacer, are converted to cysteine.
- active adipic acid adipic acid, HOC (CH
- the bond is made via an intervening compound which also has reactivity with the amino group. All of them can form an ester bond and an amide bond by a reaction using DIC or the like.
- FIG. 9 and FIG. 10 are flowcharts schematically showing steps related to the method. [0099] ⁇ Method of capturing biological material>
- FIG. 9 shows a simplified process flow chart of the "biological substance capturing method" according to the present invention.
- an antibody A that specifically recognizes the peptide T in the label substance L (chimeric substance H) is immobilized on a predetermined solid surface F (see (I) in FIG. 9).
- the interaction between the antibody A immobilized on the solid phase surface F and the peptide constituting the biological substance complex C proceeds (see (III) in FIG. 9).
- the biological substance B can be captured on the solid phase surface F via the probe substance P and the label substance L.
- the peptide T in the biological substance complex C is dissociated from the antibody A immobilized on the solid phase surface F (see FIG. 10).
- FIG. 10 shows that the complex C composed of a biological substance B, a probe substance P, and a labeling substance L, which was replaced by an excessively added free peptide T, Are eluted and released in the liquid phase, and are schematically shown.
- the dissociated biological material complex C is collected from the solid surface F, and the structure of the biological material B in the biological material complex C is analyzed. Furthermore, the biological substance B that has shown a specific interaction with the probe substance P is identified.
- an organic compound S, a peptide T bound to the organic compound S and capable of specifically recognizing the antibody A, and a powerful labeling substance L are combined with one terminal functional group of the organic compound S. (See “Labeling method for labeling substance L” described above) to obtain chimeric substance H composed of constituents with organic compound S interposed. Make it.
- the chimeric substance H obtained by this label is introduced into cells. Specifically, the chimeric substance H is dissolved in an appropriate buffer (150 mM NaCl Tris 50 mM pH 7.4 or the like).
- FIG. 11 is a diagram schematically showing a state in which the chimeric substance H is introduced into the cell indicated by the symbol M.
- the target is introduced into the cell M.
- the presence of biological material B is shown.
- the chimera substance H is dissolved in dimethyl sulfoxide (DMSO) and then diluted with the above-mentioned buffer solution and the like. (Cultured cells).
- DMSO dimethyl sulfoxide
- the chimeric substance H is introduced into the cells M using Polyfect Transfection Reagent (manufactured by Qiagen) or the like ( Transfection) and incubate for an appropriate time (after 24-48 hours).
- the interaction between the probe substance P in the chimeric substance H and the biological substance B in the cell M proceeds in the cell M.
- the probe substance P binds to a specific protein (biological substance B) in the cell M to form a biological substance complex C (see ( ⁇ ) in FIG. 11).
- this biological substance complex C is used to prepare a known “immunoprecipitation using antibody A against this amino acid sequence”.
- the method can be used to extract from the inside of the cell M (see (III) in FIG. 11).
- An example of the extraction method is as follows. First, the probe substance P on which the labeling substance L is labeled, i.e., the cells M into which the substance corresponding to the chimeric substance H has been introduced is dissolved in a solubilization buffer (for example, 20 mM HEPES, pH 7.5, 150 mM NaCl, 50 mM NaF'lmM). Solubilize using Na3V04, lmMPMSF, 1% TritonX100). After adding this solubilization buffer, remove cells M, collect in a centrifuge tube, and centrifuge at 55,000 rpm, 4 ° C, 20 minutes. Subsequently, the interaction between the antibody A preliminarily immobilized on the solid phase surface F and the peptide T in the label substance L constituting the biological substance conjugate C proceeds (again, FIG. 2).
- a solubilization buffer for example, 20 mM HEPES, pH 7.5, 150 mM NaCl, 50 m
- agarose beads (Sigma) on which an antibody A that specifically recognizes a specific amino acid sequence is immobilized, are added at 4 ° C for 3 hours. By stirring, the interaction can be advanced.
- the structure of the intracellular biological substance B in the biological substance complex C is analyzed, and the intracellular biological substance B is identified.
- the stirred beads are collected by centrifugation (1,000 rpm, 4 ° C, 1 minute), washed with a solubilization buffer, and a buffer containing the FLAG peptide (symbol T) is added to the beads.
- a buffer containing the FLAG peptide symbol T
- the target intracellular biological substance B interacting with the probe substance P and the labeling substance L complex C were recovered.
- the structural analysis of the biological material B is performed, and the biological material B can be identified.
- the target intracellular biological substance B is a protein as an example
- the target protein that has become an interaction partner can be analyzed by a known tandem mass spectrometer (MSZMS). It can be identified by a known method called “mass tag method” (Yodosha “Proteome Analysis Method”, edited by Toshiaki Isobe, Nobuhiro Takahashi, P129-P142). The specific procedure is as follows.
- the collected sample is concentrated by centrifugation, and then dissolved in an enzyme reaction buffer (100 mM Tris. PH 8.8). Next, it is digested and decomposed by "trypsin” or “lysyl endopeptidase” which is an enzyme that recognizes and cleaves a specific amino acid.
- lysyl endopeptidase can be reacted at about 37 ° C for about 12 hours so that the enzyme-substrate ratio (weight ratio) becomes 1Z100 to 1Z50 to obtain a digest. Then, the digest is measured by a tandem mass meter, and the mass value of each decomposed peptide and information on the internal amino acid sequence can be obtained.
- the database automatically searches and selects potential amino acid sequences in the database, and the sequence is fragmented for each amino acid. Calculate the mass value set when
- DCM dichloromethane
- the reaction was performed for 12 hours in the presence of 0.44 ml (0.25 M) of ( ⁇ , ⁇ -diisopropylethylamine, hereinafter “DIEA”). After the reaction, the plate was washed three times with the above DMF for 5 minutes, and further washed three times with dichloromethane for 5 minutes.
- DIEA ( ⁇ , ⁇ -diisopropylethylamine
- Asp aspartic acid
- Asp aspartic acid
- lanthanum was condensed with lanthanum in the same manner as above to prepare a Flag peptide in which each protecting group was substituted.
- FIG. 12 shows the structure of the obtained FLAG peptide.
- the Flag peptide condensed with the various spacers is condensed with various drugs and the like to prepare a chimeric compound.
- a chimeric compound was prepared by condensing a “retinoid receptor agonist” represented by the following chemical formula 5, named JS-603A-1.
- JS-603 ⁇ -1 was condensed.
- the solid support force was also dissociated using 1% TFA (DCM solution).
- TFA 90% TFA aqueous solution to remove each protecting group, a chimeric compound having a structure as shown in FIG. 13 could be prepared.
- the biological activity was evaluated using the effect of promoting shunting in blood cell carcinoma cells HL-60 cells as an index.
- Cells are cultured using RPMI 1640 medium (10% FBS + antibiotics), and the drug is diluted with the medium, added to a final concentration of 1%, and cultured in a CO incubator for 3 to 10 days.
- FIG. 14 in the group treated with the chimeric compound having a C5 alkyl chain in the spacer (100 M, 3 days), the cells were spherical suspension cells. From this, differentiation into flat adherent cells was observed (see the right photograph in FIG. 14). From these results, it was found that the chimeric compound maintained the original retinoid receptor agonist activity. From the above, it was verified that the chimeric compound according to the present invention was a chimeric substance having both the Flag peptide and a biological activity as a drug at the same time.
- HEK293 cells were adjusted to a concentration of 1.0 x 10 5 cells / ml, and 10 ml of the cells were seeded on a 10 cm petri dish and cultured overnight.
- the cultured cells were lysed with a cell lysis buffer, collected, and centrifuged to obtain a supernatant.
- the resulting supernatant was mixed with 6 to 12 nmol of a chimeric compound labeled with a Flag peptide and gently stirred for 1 hour.
- the supernatant was mixed with an anti-Flag antibody-bound agarose gel and gently stirred for 1 hour.
- the chimeric compound used in this experiment is a conjugate having alkyl chains C5 and C12 in the spacer.
- the results of identification of the target protein are shown in FIG. 15 (a photograph as a substitute for a drawing).
- a clear band which is considered to be a retinoid receptor can be confirmed (see the left photograph in Fig. 15), while it is considered that the use of a conventional biotin-labeled conjugate (comparative example) results from non-specific adsorption. Since many bands were contaminated, the band could not be identified (see the right photograph in Fig. 15).
- MSZMS tandem mass spectrometer
- a buffer for enzyme reaction 100 mM Tris, pH 8.8 was added to the cut gel.
- it was digested and decomposed with "trypsin” or "lysylendopeptidase", an enzyme that recognizes and cleaves a specific amino acid.
- lysyl endopeptidase was used. Lysyl endopeptidase was added so that the enzyme substrate ratio (weight ratio) became 1Z100 to 1Z50, and the mixture was reacted at 37 ° C for 12 hours to obtain a digest.
- the digest was measured with a tandem mass spectrometer to obtain the mass value and internal amino acid sequence information of each decomposed peptide.
- mass values of the enzymatically digested peptide fragments a candidate amino acid sequence was automatically searched and selected from the database, and a mass value set when the sequence was fragmented with each amino acid was calculated.
- the database is "SwissProtJ (Internet address:
- the present invention can reliably capture and recover a substance that has interacted with a probe substance, and thus can quickly and accurately specify a target biological substance.
- a substance that interacts with a drug candidate compound can be reliably identified, and when a toxic substance or an endocrine disrupting substance is targeted, the substance that interacts with the substance can be identified.
- the substance and mechanism can be ascertained.
- FIG. 1 is a schematic view showing the concept and material constitution of an example of a labeling substance (L) and a chimeric substance (H) according to the present invention.
- FIG. 2 is a diagram schematically showing a state in which an antibody (A) immobilized on a solid phase surface (F) specifically recognizes a peptide (T) in a labeling substance (L). is there.
- FIG. 3 is a view showing a configuration in which one lysine residue (Lys) is added and introduced to the terminal of a Flag peptide bound to a solid support (X) via a linker (Y).
- FIG. 4 is a view showing one embodiment in which an organic compound (S) is introduced into a Flag peptide (T) bound to a solid support (X).
- FIG. 5 is a view showing one example of a chemical structure of an amphiphilic labeling substance (L).
- FIG. 6 is a view showing a preferred example of a method for labeling a probe substance (P) with a labeling substance (L) (a method for producing a chimeric substance H).
- FIG. 7 is a view showing another preferred embodiment of the same method.
- FIG. 8 is a view showing still another preferred embodiment of the method.
- FIG. 9 is a view schematically showing a process flow of a “biological substance capturing method” according to the present invention.
- FIG. 10 is a view schematically showing a state in which a biological substance complex (C) is substituted by an excessively added peptide (T), and is dissolved and released in a liquid phase.
- FIG. 11 is a diagram schematically showing a state in which a complex of a labeling substance (L) and a probe substance (P) is introduced into or removed from a cell (M). .
- FIG. 12 is a view showing a configuration (structure) of a Flag peptide obtained by an experiment according to Example 1.
- FIG. 13 is a view showing a configuration (structure) of a chimeric compound obtained by an experiment according to Example 1. It is.
- FIG. 14 is a drawing-substituting photograph showing the results of the experiment according to Example 2 (in the group treated with the chimeric compound having a C5 alkyl chain in the spacer, the cells were separated from spherical floating cells to flat adherent cells.
- a photograph as a substitute for a drawing The right photograph is a photograph according to the example, and the left photograph is a photograph of the control group.
- FIG. 15 is another drawing substitute photograph (drawing substitute photograph showing the result of identifying the target protein) showing the experimental results according to Example 2.
- the left photograph is a photograph relating to the example, and the right photograph is a photograph relating to the comparative example.
- H chimeric substance heterologous complex of peptide and probe substance
- T peptide eg, epitope-tag peptide
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Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002561411A CA2561411A1 (en) | 2004-03-31 | 2005-03-30 | Labeling substance and chimera substance, process for preparing these substances, and method of biosubstance trapping, structural analysis or/and identification with use of the labeling substance |
US10/594,119 US8053194B2 (en) | 2004-03-31 | 2005-03-30 | Labeling substance and chimeric substance and method for preparing the same and method for capturing, structurally analyzing and/or identifying biological substance by means of the labeling substance |
AU2005227785A AU2005227785A1 (en) | 2004-03-31 | 2005-03-30 | Labeling substance and chimera substance, process for preparing these substances, and method of biosubstance trapping, structural analysis or/and identification with use of the labeling substance |
JP2006511728A JP4832291B2 (ja) | 2004-03-31 | 2005-03-30 | ラベル用物質とキメラ物質、これらの物質の作製方法、並びに該ラベル用物質を用いて生体物質を捕捉、構造解析又は/及び同定する方法 |
DE602005023286T DE602005023286D1 (de) | 2004-03-31 | 2005-03-30 | Verfahren zum biosubstanzeinfang, zur strukturanalyse oder/und identifizierung unter verwendung einer markierungssubstanz |
EP05721660A EP1731908B1 (en) | 2004-03-31 | 2005-03-30 | Method of biosubstance trapping, structural analysis or/and identification with use of a labeling substance |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004102879 | 2004-03-31 | ||
JP2004-102879 | 2004-03-31 | ||
JP2004112335 | 2004-04-06 | ||
JP2004-112335 | 2004-04-06 |
Publications (3)
Publication Number | Publication Date |
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WO2005094187A1 WO2005094187A1 (ja) | 2005-10-13 |
WO2005094187A2 true WO2005094187A2 (ja) | 2005-10-13 |
WO2005094187A3 WO2005094187A3 (ja) | 2005-12-08 |
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ID=35064192
Family Applications (1)
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PCT/JP2005/006077 WO2005094187A2 (ja) | 2004-03-31 | 2005-03-30 | ラベル用物質とキメラ物質、これらの物質の作製方法、並びに該ラベル用物質を用いて生体物質を捕捉、構造解析又は/及び同定する方法 |
Country Status (7)
Country | Link |
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US (1) | US8053194B2 (ja) |
EP (1) | EP1731908B1 (ja) |
JP (1) | JP4832291B2 (ja) |
AU (1) | AU2005227785A1 (ja) |
CA (1) | CA2561411A1 (ja) |
DE (1) | DE602005023286D1 (ja) |
WO (1) | WO2005094187A2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9902690B2 (en) | 2013-12-27 | 2018-02-27 | Novus International, Inc. | Ethoxylated surfactants |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20130225789A1 (en) * | 2012-02-29 | 2013-08-29 | Yi Sun | Polyethylene Glycol Having Hetero Multiple Functional Groups |
MX357969B (es) | 2014-06-23 | 2018-08-01 | Rehrig Pacific Co | Barril de plastico para cerveza. |
US10584306B2 (en) | 2017-08-11 | 2020-03-10 | Board Of Regents Of The University Of Oklahoma | Surfactant microemulsions |
Citations (3)
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JPH09133683A (ja) | 1995-11-10 | 1997-05-20 | Mikio Nakayama | 抗原又は抗体の検出シート、検出キット及び検出方法 |
WO2000011208A1 (en) | 1998-08-25 | 2000-03-02 | University Of Washington | Rapid quantitative analysis of proteins or protein function in complex mixtures |
JP2002153272A (ja) | 2000-11-24 | 2002-05-28 | Inst Of Physical & Chemical Res | 生体分子マイクロアレイ |
Family Cites Families (12)
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EP0488152A3 (en) | 1990-11-30 | 1992-11-25 | Hitachi, Ltd. | Method for immunoassay and apparatus therefor |
JPH04204379A (ja) * | 1990-11-30 | 1992-07-24 | Hitachi Ltd | 生体成分分析法 |
AU1068295A (en) * | 1993-12-09 | 1995-06-27 | Novartis Ag | Process for the production of combinatorial compound libraries |
JPH09133687A (ja) * | 1995-11-13 | 1997-05-20 | Meiji Denki Kogyo Kk | 採血試験管における血清量測定装置 |
US5998152A (en) * | 1998-03-09 | 1999-12-07 | Tularik Inc. | High-throughput screening assays for modulators of nucleic acid topoisomerases |
ATE340870T1 (de) * | 1998-04-03 | 2006-10-15 | Compound Therapeutics Inc | Adressierbare protein arrays |
JP4110221B2 (ja) * | 2000-03-30 | 2008-07-02 | 浩 長澤 | 反応検出チップ及びその作製方法 |
US20020068367A1 (en) * | 2000-10-11 | 2002-06-06 | Coffen David L. | Linker and method for solid phase combinatorial synthesis |
US7045283B2 (en) * | 2000-10-18 | 2006-05-16 | The Regents Of The University Of California | Methods of high-throughput screening for internalizing antibodies |
US7488710B2 (en) * | 2001-01-10 | 2009-02-10 | The United States Of America As Represented By The Department Of Health And Human Services | SFRP and peptide motifs that interact with SFRP and methods of their use |
WO2003102585A2 (en) * | 2002-06-03 | 2003-12-11 | Pamgene B.V. | Biomolecular kinetics method using a flow-through microarray |
US7473535B2 (en) | 2002-08-20 | 2009-01-06 | The Institute For Systems Biology | Chemical reagents and methods for detection and quantification of proteins in complex mixtures |
-
2005
- 2005-03-30 DE DE602005023286T patent/DE602005023286D1/de active Active
- 2005-03-30 JP JP2006511728A patent/JP4832291B2/ja not_active Expired - Fee Related
- 2005-03-30 US US10/594,119 patent/US8053194B2/en not_active Expired - Fee Related
- 2005-03-30 CA CA002561411A patent/CA2561411A1/en not_active Abandoned
- 2005-03-30 WO PCT/JP2005/006077 patent/WO2005094187A2/ja active Application Filing
- 2005-03-30 EP EP05721660A patent/EP1731908B1/en not_active Expired - Fee Related
- 2005-03-30 AU AU2005227785A patent/AU2005227785A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09133683A (ja) | 1995-11-10 | 1997-05-20 | Mikio Nakayama | 抗原又は抗体の検出シート、検出キット及び検出方法 |
WO2000011208A1 (en) | 1998-08-25 | 2000-03-02 | University Of Washington | Rapid quantitative analysis of proteins or protein function in complex mixtures |
JP2002153272A (ja) | 2000-11-24 | 2002-05-28 | Inst Of Physical & Chemical Res | 生体分子マイクロアレイ |
Non-Patent Citations (2)
Title |
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"Experimental Medicine, Supplementary Volume, Post-Genome Era Experimental Course-2", article "Analysis of proteome/frontier technology in protein expression and its functional analysis and study on genomic medicine and drug discovery", pages: 166 - 174 |
See also references of EP1731908A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9902690B2 (en) | 2013-12-27 | 2018-02-27 | Novus International, Inc. | Ethoxylated surfactants |
Also Published As
Publication number | Publication date |
---|---|
WO2005094187A3 (ja) | 2005-12-08 |
US8053194B2 (en) | 2011-11-08 |
EP1731908A4 (en) | 2008-05-28 |
JP4832291B2 (ja) | 2011-12-07 |
US20070287152A1 (en) | 2007-12-13 |
CA2561411A1 (en) | 2005-10-13 |
JPWO2005094187A1 (ja) | 2008-02-14 |
EP1731908A2 (en) | 2006-12-13 |
EP1731908B1 (en) | 2010-09-01 |
DE602005023286D1 (de) | 2010-10-14 |
AU2005227785A1 (en) | 2005-10-13 |
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