WO2005054296A1 - メチルリジンを認識する抗体及びその製造方法並びにその利用 - Google Patents
メチルリジンを認識する抗体及びその製造方法並びにその利用 Download PDFInfo
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- WO2005054296A1 WO2005054296A1 PCT/JP2004/017959 JP2004017959W WO2005054296A1 WO 2005054296 A1 WO2005054296 A1 WO 2005054296A1 JP 2004017959 W JP2004017959 W JP 2004017959W WO 2005054296 A1 WO2005054296 A1 WO 2005054296A1
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- Prior art keywords
- antibody
- methyllysine
- protein
- lysine
- methylated
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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
- G01N33/577—Immunoassay; Biospecific binding assay; Materials therefor involving monoclonal antibodies binding reaction mechanisms characterised by the use of monoclonal antibodies; monoclonal antibodies per se are classified with their corresponding antigens
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/44—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material not provided for elsewhere, e.g. haptens, metals, DNA, RNA, amino acids
Definitions
- Antibody recognizing methyllysine method for producing the same, and use thereof
- the present invention relates to an antibody that can be used for detecting methyllysine, which is one of post-translational modifications of a protein, a method for producing the same, and a method for detecting a methylated protein using the antibody.
- Proteins are known to undergo various post-translational modifications that do not function as they are after being translated. For example, phosphorylation of proteins is important as a signal cascade when transmitting extracellular signals to the nucleus, or as a control factor for normal cell cycle progression. It is important for progress. When a protein is ubiquitinated, it is carried to the proteanome and degraded, losing its activity. On the other hand, many proteins are activated by the signal peptide being cut off by the signal peptidase present in the small receptor membrane. In this way, proteins undergo various modifications after translation, so that proteins perform their functions at the right place at the right time.
- Non-Patent Document 2 Heparin-binding hemagglutinin (HBHA) molecules, which are important for Mycobacterium tuberculosis to adhere to epithelial cells, have been reported to have increased resistance to proteases due to methylylation in the heparin-binding region.
- Non-Patent Document 3 Elongation factor 1a (EF-1 ⁇ ) catalyzes GTP-dependent ribosome binding of aminoacyl-tRNA molecules.
- EF-1 ⁇ Elongation factor 1a
- a method using a probe molecule specific to the modification can be considered.
- a wide variety of antibodies that recognize phosphoric acid cinnamate are commercially available and widely used.
- Antibodies useful for finding new modified proteins in the future are considered to be antibodies that can recognize only the target modified amino acid as much as possible, without depending on the surrounding amino acid sequence.
- phosphoric acid cinnamate an antibody having such properties has been developed and marketed. However, there is no report on such an antibody with respect to methyllysine. The current status of anti-methyllysine antibodies reported so far is as follows.
- Patent Document 1 Antibodies (Patent Document 1) have been developed and are commercially available (commercially available from SantaCruz, etc.), but of course, these antibodies do not recognize a wide variety of methyllysine-containing proteins.
- an anti-methyllysine antibody (Egret polyclonal antibody) obtained by using histone HI molecule chemically methylated as an immunogen has been developed and marketed (abeam), but this antibody can recognize only dimethyllysine. The ability to recognize non-histone methylated proteins is also poor.
- the monoclonal antibody mAb 4057D2 which has the ability to recognize M. tuberculosis HBHA molecules and inhibit the inoculation of M. tuberculosis bacteria to the outside of the lungs, is capable of recognizing methyl-Hidden-type HBHA molecules. It has been reported that a laminin-binding protein having a lysine-rich domain, such as HBHA, can also be recognized as the methyli-dani type. Therefore, it is considered that this antibody recognizes a cluster of methyllysine present in the protein. However, it is considered that the recognition ability of the Methylidani protein without any other lysine-rich domain is never strong (Non-Patent Document 5). Thus, tampering is not affected by surrounding amino acids. There is no report that teaches or suggests an antibody capable of recognizing methyllysine residues in proteins. A method for widely recognizing various methyl amide proteins has not yet been established.
- Patent document 1 WO 02/18418 pamphlet
- Non-Patent Document 1 M.D.Litt et al., Science (USA), 2001, Vol. 293, p. 2453
- Non-Patent Document 2 K. Pethe et al., Proc. Natl. Acad. Sci. USA, (USA), 2002, Vol. 99, p.
- Non-Patent Document 3 TE Dever et al., J. Biol. Chem. (USA), 1989, vol. 264, p. 20518
- Non-Patent Document 4 WA Fonzi et al., Mol. Cell. Biol. (USA), 1985
- Non-Patent Document 5 K. Pethe et al., Proc. Natl. Acad. Sci. USA (USA), 2002, Vol. 99, p. 10759
- the main issue of the present invention is to obtain an anti-methyllysine antibody that can be used as a probe molecule therefor. It is also an object of the present invention to provide a means for obtaining an antibody having such properties.
- the present inventor has proposed that antibodies induced to be produced by immunizing an animal using a chemically methylated protein as an immunogen are not affected by surrounding amino acid residues, and that methyllysine residues are not affected.
- the antibody having such characteristics was successfully purified or monocloned. That is, the above problem can be solved by the following means.
- Anti-methyllysine antibodies that specifically bind to dimethyllysine and monomethyllysine.
- proteins other than histones are selected from keyhole limpets, such as mosquito mosinin, sea urchin serum albumin, and ovalbumin.
- the antibody according to any one of the above (1) to (6) which is a polyclonal antibody.
- a hybridoma producing an anti-methyllysine antibody wherein the hybridoma is selected from the group consisting of MEK3D7, MEK4E10, MEK5F7, MEK2-5A11, and MEK2-5B11.
- the anti-methyllysine monoclonal antibody and polyclonal antibody provided by the present invention are useful for searching for a new methyllysine-containing protein that can be a cause of disease or a diagnostic marker. Furthermore, the anti-methyl lysine monoclonal antibodies and polyclonal antibodies provided by the present invention are also useful for controlling biomolecular functions in which lysine residue methylation plays an important role, and for diagnosing diseases by detecting methyl lysine-containing proteins. .
- the method for producing an anti-methyl lysine antibody provided by the present invention has a stronger activity than before, has a wider tolerance for amino acid sequences around methyl lysine residues, and is useful for obtaining an anti-methyl lysine antibody. .
- An animal is immunized using the chemically methylated protein as an immunogen, and a hybridoma producing a monoclonal antibody is prepared according to a conventional method.
- Screen for domas By screening using a methylated protein different from the methylated protein used for the immunogen, antibodies that recognize methyllysine residues in various proteins can be obtained, not limited to specific proteins.
- Examples of the method for methylation of a protein include, for example, a method of reacting formaldehyde in the presence of sodium borohydride under conditions of pH 7 or more. 1S Any method is limited to this method. Not something.
- the proteins used for the immunogen include proteins commonly used in experiments such as keyhole limplet hemocyanin, sea urchin serum albumin, ovalbumin, human serum albumin, transferrin, and thyroglobulin. It goes without saying that it is not limited. It is also desirable that these proteins do not have a lysine-rich region like the histone proteins.
- Histone proteins have a large amount of lysine residues that cause strong basicity in the molecule, and all histone proteins have many lysine-rich regions. Therefore, when a chemically methylated histone is used as an immunogen, it is considered that an antibody against a methyllysine-rich region becomes dominant. In fact, a heron anti-methyllysine antibody (Abeam), obtained using a histone HI obtained by methylation, has excellent reactivity with histones. Not good. Therefore, as a protein used as an immunogen after methylation, a protein having a strong basicity such as histone and having a large amount of lysine-rich region should be avoided.
- Abseam heron anti-methyllysine antibody
- a protein different from the protein used for immunization can be similarly chemically methylated and used.
- the antibody titer can be chemically methylated, and the ability to use serum serum albumin, ovalbumin, human serum albumin, transferrin, thyroglobulin, etc.
- the present invention is not limited to this protein.
- those obtained by binding methyllysine to proteins other than those used for immunization by various methods those obtained by directly binding methyllysine to ELISA plates, or synthetic or natural peptides containing methyllysine Natural proteins can be used.
- an antibody specifically recognizing the methyli-dani site is obtained by purifying serum derived from an animal immunized with methylated KLH using an affinity column on which methyl-i-dani BSA is immobilized.
- an affinity column a column in which methyl lysine is directly bound to a gel, or a column in which a synthetic peptide, a natural peptide, or a natural protein containing methyl lysine is bound to a gel can also be used.
- an immunoassay and an immunodetection method using the antibody of the present invention it is possible to measure and detect a wide range of methylated protein.
- These methods include enzyme immunoassay (EI A), radioimmunoassay (RIA), fluorescence immunoassay (FIA), and latex agglutination, in which polystyrene particles are sensitized with this antibody. included.
- EI A enzyme immunoassay
- RIA radioimmunoassay
- FFA fluorescence immunoassay
- latex agglutination in which polystyrene particles are sensitized with this antibody. included.
- Western blotting, various tissue staining, and the like can also be performed using the present antibody. The invention's effect
- the antibody of the present invention can recognize methyllysine residues without being affected by surrounding amino acid residues, the use of these antibodies allows detection of a wider variety of methylated proteins than conventional methods. A possible method is provided. In addition, the use of these antibodies makes it possible to control biomolecular functions in which lysine residue methylation plays an important role and to diagnose diseases by detecting methyllysine-containing proteins.
- Keyhole mussels are used as proteins which are chemically methylated and used for immunogens.
- KLH hemocyanin
- KLH chemically methylated can be produced, for example, by the following method. Dissolve 10 mg of KLH in 1 ml of borate buffer (20 mM NaB0, pH 9.3) and add 0.5 mg of borated water
- Methylated KLH solution is mixed 1: 1 with Freund's complete adjuvant, adjuvant such as TiterMax Gold (CytRx), and passed through a joint repeatedly with two syringes connected by an AC joint, or sonication
- An emulsion is prepared by a method such as the above.
- the prepared antigen-containing emulsion is injected subcutaneously, intradermally, intramuscularly, intraperitoneally, or at multiple sites. After completion of the first immunization, an interval of 1 to 4 weeks is provided, and the second immunization is performed in the same manner.
- the complete Freund's adjuvant is used for the first time, it is preferable to use Freund's incomplete adjuvant for the second and subsequent immunizations. Thereafter, the immunization is continued until the titer of the anti-methyllysine antibody in the blood increases.
- the antibody titer can be measured as follows. Serum albumin was dissolved in PBS to a concentration of 10 g / ml in the same manner as in KLH, and was added to each well of a 96-well ELISA plate in a volume of 50 1 per well at a temperature of 4 ° C. ⁇ ⁇ Adsorb. Wash each well with PBS (PBST) containing 0.05% Tween 20 and use for washing. Blocking with PBST containing 1% BSA may be performed before Atsushi. Blood is collected from the orbital venous plexus, tail vein or tail artery in mice, and from the pinna vein or ear artery in rabbits. After diluting 30 times with PBST, centrifuge.
- mice monoclonal antibody When producing a mouse monoclonal antibody, after confirming that the titer is sufficiently elevated, the spleen is removed, and spleen cells are isolated.
- Rome for example, SP2 / 0-Agl4
- Cells that have successfully fused are selectively cultured in HAT (hypoxanthine'aminobuterin / thymidine) medium. After continuing the culture while replacing the medium by half the volume every few days, for about 7-14 days, measure the antibody titer of the culture supernatant. Positive cells are cloned by limiting dilution to obtain the desired antibody-producing hybridoma.
- HAT hyperxanthine'aminobuterin / thymidine
- the hybridoma clones obtained by the above method include MEK3D7 (Accession number FERM P-19595), MEK4E10 (Accession number FERM P-19596), MEK5F7 (Accession number FERM P-19597), MEK2-5A11 (Accession number FERM P- 19593) and MEK2-5B11 (Accession No. FERM P-19594).
- a purified antibody can be obtained by the following procedure.
- a culture solution obtained by culturing a hybridoma can be used as a source for antibody purification.
- transplanting the hybridoma into the peritoneal cavity of the mouse to produce ascites can yield a sample containing a high concentration of anti-methyllysine antibody in the ascites.
- serum containing the antibody is used.
- Antibodies can be purified using an affinity column on which a methylidani protein different from the antigen used for immunization is immobilized.
- affiliate rams having methylidani protein immobilized thereon can be obtained, for example, by the following method.
- An aldehyde or a carrier such as agarose or sepharose activated with N-hydroxysuccinimide or the like is immobilized with a protein different from the protein used in the immunization, such as serum albumin.
- the solid-phased protein is methylated using formalin and sodium borohydride. By performing such an operation, it is possible to obtain an affinity column on which methylidani protein is immobilized.
- methyllysine itself may be immobilized on a gel, or a peptide containing methyllysine may be immobilized.
- a purified antibody can be obtained by flowing a solution containing the antibody through the affinity column prepared by the above method, washing sufficiently with a buffer such as PBS, and eluting under acidic conditions or the like. Before or after the above-mentioned affinity purification, purification may be performed on a column on which an antibody-binding protein such as protein G, protein A or Protein L is immobilized.
- Recognition of a methyllysine residue independently of the surrounding amino acid sequence of the antibody obtained by the above method can be confirmed, for example, by the following method.
- the fact that the antibody recognizes a methyllysine residue indicates that the reactivity of the antibody to the immobilized methylanilide protein is inhibited by monomethyllysine, dimethyllysine or trimethyllysine added from outside. It can be confirmed by not being inhibited by lysine.
- the fact that the protein does not depend much on the surrounding amino acid sequence was confirmed by examining that different proteins, which were obtained by immobilizing different proteins, were each solid-phased, but exhibited strong binding activity even with displacement. it can.
- multiple proteins are stained when the lysate of animal cells is electrophoresed, transferred to a PVDF membrane or -trocellulose membrane, and stained with an antibody by Western blotting.
- the immunoprecipitate contained a methyl ideride protein different from that used for immunization, such as EF-1a, and vice versa.
- a band stained with an anti-methyl lysine antibody can be detected in an immunoprecipitate of an EF-1 ⁇ antibody that is known to be methylated.
- the antibody provided by the present invention is useful not only for searching for a methyllysine-containing protein as a new target molecule useful for disease diagnosis and treatment, but also for the discovery of a promising target molecule. It can be used for the purpose of controlling its function or for the purpose of diagnosis.
- Anti-methyllysine mouse monoclonal antibody-producing hybridomas exemplified by MEK3D7, MEK4E10, MEK5F7, ⁇ 2-5A11 and ⁇ 2-5B11 were prepared by the following method.
- mice were immunized as follows.
- the methylated KLH solution was mixed 1: 1 with TiterMax Gold (CytRx), and repeatedly passed through the joint with two syringes connected by an AC joint to produce an emulsion.
- the prepared antigen-containing emulsion was immunized subcutaneously or intraperitoneally three or four times at intervals of one to four weeks.
- a single amount of the antigen used was 50-100 / zg of methylated KLH.
- Methylated serum albumin hereinafter referred to as BSA
- BSA Methylated serum albumin
- 4 days before the injection Methylidani KLH dissolved in PBS was administered intraperitoneally and 3 days before in the tail vein (dosage was 100 ⁇ g / mouse G
- the measurement of the antibody titer was performed as follows. Pelleted serum albumin methylated in the same manner as KLH was dissolved in PBS to a concentration of 10 g / ml in PBS, and added to each well of a 96-well ELISA plate at a volume of 50 1 per well. ⁇ ⁇ Adsorbed. Each well was washed with PBS (PBST) containing 0.05% Tween 20 and used for attestation. Blood was collected using the tail artery, diluted 30-fold with PBST, and centrifuged. A dilution series was prepared from the obtained supernatant with PBST, and then added to each well of an ELISA plate coated with methylated BSA at a ratio of 50: 1.
- HRP horseradish peroxidase
- the fusion between the antibody-producing cells and the myeloma was performed as follows. Three days after intravenous antigen administration, the spleen was removed and spleen cells were isolated. The 5 ⁇ 10 7 cells were separately cultured and fused with 1 ⁇ 10 7 mouse myeloma SP2 / 0-Agl4 by using polyethylene glycol. The successfully fused cells were selectively cultured in HAT (hypoxanthine 'aminopterin' thymidine) medium. After culturing was continued for 11 days while changing the medium by half every several days, the antibody titer of the culture supernatant was measured. Positive-well cells were cloned by limiting dilution to obtain the desired antibody-producing hybridoma.
- HAT hyperxanthine 'aminopterin' thymidine
- the isotypes of antibodies derived from MEK5F7, MEK2-1A3, MEK2-1H9, MEK2-5A11, MEK2-5B11 and MEK2-5G1 are IgG2a ⁇ , IgGl ⁇ , IgGl ⁇ , IgG2a, IgG2a ⁇ , IgG2a ⁇ , IgG3, respectively.
- Fig. 1 shows the results obtained by examining the reactivity of an antibody purified by a protein G column from the culture supernatant of the hybridoma obtained in this manner by ELISA. The method is the same as that for measuring antibody titers in blood. As shown in the figure, it was a compelling factor that any of the culture supernatants contained an antibody that reacts with the immobilized methylated BSA.
- the anti-methyllysine ⁇ heron polyclonal antibody was prepared by the following procedure. ⁇ Two herons (female Japanese white breeds) were immunized with methylated KLH at the first dose of 0.15 mg / animal and at the second time at the fifth dose of 0.3 mg / animal. The first dose was administered subcutaneously on the back as an emulsion with Freund's complete adjuvant, and the second and subsequent doses were given as an emulsion with Freund's incomplete adjuvant. All immunizations were performed at 2-week intervals, and one week after the final immunization, whole blood was collected to prepare antisera. Antiserum was obtained in a total of 118 ml for two birds.
- Fig. 2 shows the immobilized methylidani of the purified anti-methyllysine / egg polyclonal antibody.
- Purification was performed using an affinity ram with an immobilized antiserum force, such as a polyclonal antibody.
- a methylidani protein-immobilized affinity column was prepared by the following method. First, as a first step, a carrier having BSA immobilized thereon was prepared. Aminolink Immobilization kit of Pierce was used for immobilization. After 2 ml of agarose carrier activated with aldehyde was equilibrated with 5 ml of coupling buffer, 10 mg of BSA dissolved in 2 ml of coupling buffer was added. Further, 200 1 of the reductant solution was dried and bound at room temperature for 6 hours. After washing the carrier with 5 ml coupling buffer, 5 ml of 1 M ethanolamine is added and 200 ⁇ l of reductant After adding the solution, the reaction was carried out at room temperature for 30 minutes.
- the resultant was washed four times with 5 ml of a wash solution, and then equilibrated with a 0.5 M borate buffer (pH 9.4). After draining, 2 mg of NaBH dissolved in 2 ml of borate buffer was added, and formalin was further added 21 times every 5 minutes for 5 times.
- the reaction was allowed to proceed at room temperature for 30 minutes, and then washed with PBS.
- the affinity column can also be used for purification of a monoclonal antibody.
- An example of the purification of the anti-methyllysine mouse monoclonal antibody is shown below.
- the mice were euthanized by ether anesthesia, and ascites fluid was collected. 2 ml of ascites was diluted two-fold with PBS and applied to an affinity column equilibrated with PBS.
- Fig. 3 shows that the monoclonal antibodies and the egret polyclonal antibody established this time bind to the BSA, KLH, and ovalbumin (OVA) proteins, respectively.
- the antibody is a methyl-specific site-specific antibody. If it is desired to remove the antibody exhibiting the non-specific reaction, the absorption may be carried out on a column on which non-methylidani KLH is immobilized.
- methylyl lysines of the ⁇ -amino group of lysine There are three types of methylyl lysines of the ⁇ -amino group of lysine: monomethyllysine, dimethyllysine, and trimethyllysine. In order to further confirm whether the reactivity to any of these was strong and the specificity to methyllysine, competition experiments with each modified amino acid were performed. After adsorbing the antigen to the ELISA plate using 10 g / ml methylated BSA at 50 1 / well, react each antibody at 1 g / ml with various concentrations of modified lysine or unmodified lysine.
- the membrane is washed and reacted with HRP-labeled anti-mouse IgG for mouse monoclonal antibody or HRP-labeled anti-Peagle IgG for rabbit egron polyclonal antibody.
- the band is washed with Amersham Bioscience's ECL Plus chemiluminescence reagent. Detected. The results are shown in FIG. As shown in the figure, all of the mouse monoclonal antibodies exemplified here detected a plurality of bands thought to be methylidani proteins, indicating that they were useful for detecting intracellular methylidani proteins. .
- the band between the molecular weights of 14.4k and 21.5k is a histone, and from the comparison of the band intensities, the anti-methyllysine antibody established this time is higher than the commercially available antibody regardless of whether it is a monoclonal antibody or polyclonal antibody. You can see that it is excellent.
- the established antibody detects methylidani, a molecule already known to be methylidani. Confirmation experiments using immunoprecipitation were performed to see if they could be done.
- Elongation factor 1a is a protein with a molecular weight of about 50 kD, which is known to be methylated at several points in the molecule. The band at a molecular weight near 50 kD in Fig. 5 can hit it. High.
- MOLT-4F cells were digested with a protease inhibitor mixture (Complete Mini EDTA-free, Roche) in lysis buffer (120 mM NaCl, 1 mM CaCl, 0.5% Nonidet P-40, 50 mM Tris-HC1, pH8.0)
- Immunoprecipitation was performed using an anti-methyllysine antibody MEK2-5B11 or a commercially available anti-EF-1 ⁇ antibody (Upstate, clone CBP-KK1).
- the immunoprecipitate was developed by SDS polyacrylamide electrophoresis, transferred to a PVDF membrane, and detected with an HRP-labeled anti-methyllysine antibody MEK3D7 or anti-EF-1 ⁇ antibody.
- HRP-labeled anti-mouse IgG was used as a secondary antibody.
- Color development was performed with ECL plus from Amersham Bioscience.
- Figure 6 shows the results. The figure shows a magnified view of the vicinity of a molecular weight of 50 kD.
- FIG. 7 shows the results of detection by the HRP-labeled anti-methyllysine antibody MEK3D7 after transfer to the PVDF membrane. As shown in the figure, it can be seen that this antibody detects multiple spots of methyllysine-containing proteins Brief Description of Drawings
- FIG. 1 is a diagram showing the results of an ELISA test for the reactivity of an anti-methyllysine mouse monoclonal antibody with solid-phase methyl BSA.
- A Results for mouse monoclonal antibodies produced by clone MEK3D2, MEK3D7, MEK4E10, MEK5F5, and MEK5F7
- B Results for mouse monoclonal antibodies produced.
- FIG. 2 is a diagram showing the results of an ELISA test for the reactivity of an anti-methyllysine / egg polyclonal antibody with solid-phase BIG-Methyl BSA.
- FIG. 3-1 A diagram showing the results of examining the reactivity of the anti-methyllysine monoclonal antibody MEK3D2 against methylated and unmethylated BSA, KLH and OVA by ELISA.
- FIG. 3-2 A diagram showing the results of examining the reactivity of anti-methyllysine monoclonal antibodies (B) MEK 3D7 and (C) MEK 4E10 against methylated and unmethylated BSA, KLH and OVA by ELISA. .
- FIG. 3-3 Diagram showing the results of an ELISA test for the reactivity of (D) MEK 5F5 and (E) MEK 5F7 anti-methyllysine monoclonal antibodies against methylated and unmethylated BSA, KLH and OVA. .
- FIG. 3-5 Reactivity of anti-methyllysine monoclonal antibodies (H) MEK2-5A11 and (I) MEK2-5B11 against methylated and unmethylated BSA, KLH and OVA were examined by ELISA. The figure showing the result.
- FIG. 4-1 The results of examining the inhibition of the reactivity of the anti-methyllysine antibody MEK3D2 to solid-phase methyl BSA by lysine, monomethyllysine, dimethyllysine and trimethyllysine FIG.
- FIG. 4-5 Inhibition of the reactivity of (H) MEK 2-5A11 and (I) MEK 2-5B11 on immobilized methyl BSA by lysine, monomethyl lysine, dimethyl lysine and trimethyl lysine was examined. The figure showing the result.
- FIG. 5 is a diagram showing the results of detection of a methyllysine-containing protein in a lysate of MOLT-4F cells using a monoclonal antibody and a polyclonal antibody using Western blotting.
- MOLT-4F cell-soluble lysate Neutralized anti-methyllysine antibody or anti-EF-1a antibody was precipitated by Western blotting using anti-methyllysine antibody and anti-EF-1 ⁇ antibody.
- FIG. 7 is a diagram showing the results of detection of MOLT_4F cell soluble lysate after development by two-dimensional electrophoresis and HRP-labeled MEK3D7 antibody. Copy on paper (Note: Electronic data is the original)
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JP2005515969A JPWO2005054296A1 (ja) | 2003-12-02 | 2004-12-02 | メチルリジンを認識する抗体及びその製造方法並びにその利用 |
US10/581,811 US20070111255A1 (en) | 2003-12-02 | 2004-12-02 | Antibodies recognizing methyllysine, process for producing the same and utilization thereof |
EP04819907A EP1707576A1 (en) | 2003-12-02 | 2004-12-02 | Antibodies recognizing methyllysine, process for producing the same and utilization thereof |
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WO2007074864A1 (ja) * | 2005-12-28 | 2007-07-05 | Advanced Life Science Institute, Inc. | アシンメトリックジメチルアルギニンを認識する抗体及びその製造方法並びに翻訳後修飾アミノ酸含有タンパク質の検出方法 |
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JP6051373B2 (ja) * | 2011-12-02 | 2016-12-27 | オンコセラピー・サイエンス株式会社 | 癌の治療および診断の標的遺伝子としてのsmyd2 |
WO2016011920A1 (en) | 2014-07-25 | 2016-01-28 | Pmt Biolabs Inc | Alysine monomethylated derivative and corresponding antibody and use thereof |
CN108084047B (zh) * | 2014-07-25 | 2020-12-15 | 杭州景杰生物科技有限公司 | 一种制备特异性的丙酰甲基化赖氨酸泛抗体方法 |
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WO2002018418A1 (en) * | 2000-08-25 | 2002-03-07 | University Of Virginia Patent Foundation | Antibodies specific for methylated lysines in histones |
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- 2004-12-02 EP EP04819907A patent/EP1707576A1/en not_active Withdrawn
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US20070111255A1 (en) | 2007-05-17 |
JPWO2005054296A1 (ja) | 2008-02-28 |
EP1707576A1 (en) | 2006-10-04 |
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