WO2002001224A1 - Procede d'evaluation de l'activite de liaison d'un ligand a une proteine de liaison aux ligands - Google Patents
Procede d'evaluation de l'activite de liaison d'un ligand a une proteine de liaison aux ligands Download PDFInfo
- Publication number
- WO2002001224A1 WO2002001224A1 PCT/JP2001/005501 JP0105501W WO0201224A1 WO 2002001224 A1 WO2002001224 A1 WO 2002001224A1 JP 0105501 W JP0105501 W JP 0105501W WO 0201224 A1 WO0201224 A1 WO 0201224A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- binding
- ligand
- antibody
- protein
- substance
- Prior art date
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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
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6854—Immunoglobulins
- G01N33/6857—Antibody fragments
-
- 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
-
- 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
Definitions
- the present invention relates to a method for evaluating the binding activity between a ligand and a ligand-binding protein.
- Background technology Ming ''
- BIAC0RE TM surface plasmon resonance sensor
- BIAC0RE TM The basic structure of BIAC0RE TM consists of a light source and a prism, a detector and a microchannel.
- the ligand is immobilized on a cassette-type sensor chip, and the analyte is injected there. If both have an affinity, the amount of binding is detected optically.
- the principle of detection is a phenomenon called surface plasmon resonance.
- the incident light at a certain angle is used to excite surface plasmons and is attenuated.
- the angle varies depending on the change in the concentration of the solvent in contact with the metal thin film (sensor).
- BIAC0RE TM is one of detecting this change.
- 1000RU (resonance units). 1000RU is the change amount when bound protein of about l ng on thin gold sensor surface 1 Yuzuru 2, it is possible to sufficiently detect a change of about 50 RU (50 pg) if protein.
- the sensor is a computer that comes with BIAC0RE TM Is converted into a binding curve called a gram and drawn on a computer display in real time (Toru Natsume et al., (1995) Experimental Medicine, 13, P563-569.) (Karl sson, R. et al, (1991) J. Immunol. Methods 145, p229-240.) 0
- BIAC0RE TM allows the kinetic parameters of the antibody to be measured, namely the dissociation constant (KD), the dissociation rate constant (Kdi ss) and the association rate constant (K ass).
- An object of the present invention is to provide a simple and highly accurate method for measuring the biological activity of a ligand (in particular, an antibody).
- the present inventors studied a method for measuring the binding activity by quantifying the amount of binding of an antibody to an antigen in order to easily evaluate the biological activity of an antibody in vitro without kinetic analysis. By correcting the antibody concentration using a quantitative system for the amount of protein A and antibody bound, a highly accurate and simple antibody activity evaluation test method was successfully established, and the present invention was completed.
- the present invention provides a method for evaluating the binding activity between a ligand and a ligand-binding protein, which comprises measuring the binding activity between the ligand and the ligand-binding protein, and binding the ligand with the ligand-binding protein.
- Either the ligand or the ligand binding protein may be immobilized.
- the ligand may be an antigen or its antibody, an enzyme or its substrate protein, or a ligand for various receptors.
- the ligand may be an antibody, and the ligand binding protein may be an antigen peptide.
- the second ligand binding substance is the antibody constant region (Fc portion, L chain / region, L chain ⁇ Region, etc.), and a substance that specifically binds to a portion other than the antigen binding site such as a sugar chain, and in particular, may be a substance that specifically binds to the Fc portion of an antibody.
- the substance that specifically binds to the Fc portion of the antibody may be protein A, protein G, protein L, Fc receptor or lectin.
- a FLAG protein may be bound to a ligand, and a substance that specifically binds to the FLAG protein may be used as the second ligand-binding protein.
- the ligand-binding protein and the second ligand-binding substance may be immobilized, respectively, and the same sample containing the ligand may be reacted with each other to measure the respective binding activity values.
- the ligand is an antibody
- the ligand binding protein is an antigen peptide
- the second ligand binding substance is protein A.
- the binding activity between the antigen peptide and the antibody may be corrected by the binding activity between the antibody and the second ligand binding substance.
- the binding activity between the antibody and the antigen peptide can be evaluated by the binding activity ratio of the antibody calculated by the following formula (I). Binding activity between antibody and antigen peptide
- Binding activity between the antibody and the second ligand-binding substance The binding activity between the antibody and the antigen peptide is calculated by the following formula (II).
- the binding activity between the antibody and the second ligand-binding substance is calculated as follows: It can be calculated by equation (III).
- Antibody and antigen peptide Binding concentration of antibody and antigen peptide in unknown sample.
- the binding activity of the antibody of the unknown sample to the antigen can be evaluated by the binding activity ratio of the antibody calculated by the following formula ( ⁇ ). Binding activity between antibody and antigen peptide
- Antibody binding activity ratio (%) -X 100 (1,) Binding activity value of antibody to protein A
- the binding activity value of antibody to antigen is calculated by the following formula (II), and the binding activity value of antibody to protein A Can be calculated by the following formula ( ⁇ ⁇ ).
- Antibody and antigen peptide Binding concentration of antibody and antigen peptide in unknown sample.
- X 100 (II ⁇ ) binding activity The binding concentration of antibody and protein A in the standard sample The binding concentration of antibody to antigen peptide and the binding concentration of antibody to protein A were determined by surface plasmon resonance, fluorescence polarization measurement, Radioimmunoassay (RIA), enzyme-labeled solid-phase immunoassay (ELISA), HPLC, ultracentrifugation, titration calorimeter, etc. Of these, measurement by surface plasmon resonance is convenient because the interaction between the antibody and the antigen can be monitored in real time without labeling.
- the antibody to be subjected to the method of the present invention may be an antibody against any antigen, and may be an antibody against parathyroid hormone-related peptide (hereinafter referred to as “PTHrP”) (hereinafter referred to as “anti-antibody”).
- PTHrP antibody an antibody against the IL-6 receptor, an antibody against the HM1.24 antigen, an antibody against tissue factor (TF), and the like.
- Antibodies can be either monoclonal or polyclonal. However, monoclonal antibodies are preferred. 'The class of antibody may be any of IgM, IgD, IgG, IgA and IgE, but IgG is preferred. Also, the subclass of the H chain may be any of IgGl, IgG2, IgG3, and IgG4, but IgGl and IgG4 are desirable, and the subclass of the L chain may be any of ⁇ and ⁇ .
- the monoclonal antibody may be humanized, humanized or chimerized.
- those that can be measured by the measurement method of the present invention include antibody fragments such as Fab and (Fab ') 2 and reconstituted single chain Fv and the like.
- the antibody does not form an oligomer such as a dimer, or has a small amount of formed oligomer (preferably 5% or less).
- the “second ligand binding substance” refers to a substance that binds to a ligand at a site other than the binding site with a ligand binding protein (referred to as “first ligand binding substance”).
- first ligand binding substance refers to a substance that binds to a ligand at a site other than the binding site with a ligand binding protein
- the second ligand-binding substance is specific to a portion of the antibody other than the antigen-binding site, such as the constant region (Fc portion, L chain ⁇ region, L chain ⁇ region, etc.) and sugar chain.
- the constant region Fc portion, L chain ⁇ region, L chain ⁇ region, etc.
- sugar chain refers to a substance that binds specifically.
- the substance that binds to the Fc portion include protein T, protein G, and Fc receptor.
- Substances that bind to the L chain ⁇ region include protein L, anti- ⁇ antibodies and the like.
- lectins such as protein A, protein G, Fc receptor, protein L, RCA, LCA, and Con A are preferable, and more preferably, protein A, Protein G and protein L, most preferably protein A.
- the present invention also provides a kit for evaluating the binding activity between a ligand and a ligand-binding protein, comprising a ligand-binding protein and a second ligand-binding substance.
- the ligand binding protein may be an antigen peptide.
- the kit of the present invention may further include other reagents and the like.
- the kit of the present invention comprises a reagent (for immobilizing a substance that binds to an antigen and an antibody other than the antigen-binding site) on a sensor chip.
- Any reagent may be used as long as it activates a functional group such as an amino group, a thiol group, or an aldehyde group and binds to a chip, for example, N-ethyl- ⁇ '-(3-dimethylaminopropyl ) Carbodiimide hydrochloride, ⁇ -hydroxysuccinimide, ethanoylamine hydrochloride, 2- (2-pyridinyldithio) ethanamine hydrochloride, cysteine, biotinhydrazide)) and the like.
- the method and kit for evaluating the activity of a ligand (eg, an antibody) of the present invention can be used without adding a purification operation even if a heterologous protein is present as an impurity, a medium, or a stabilizing agent in a sample solution. For example, it is possible to evaluate the binding activity ratio as an antibody) molecule. Therefore, it can be used for quality control of antibody in the manufacturing process or as a purified drug substance, process control, and study of formulation design.
- the binding activity ratio finally obtained by the method for evaluating the activity of the ligand (for example, antibody) of the present invention and the kit is not the concentration of the active ingredient in the sample solution but the second activity of the ligand (for example, antibody). Is the specific activity of the ligand binding activity relative to the ligand binding activity. Therefore, if the value is 100% or more, some degradation occurs in the portion other than the antigen-binding site (for example, Fc portion) of the antibody, and if it is 100% or less, some degradation occurs in the antigen-binding site of the antibody. The possibility is suggested. From this, it can be used for stability tests and setting of expiration dates by combining with other physical property evaluation methods.
- the method and kit for evaluating the activity of a ligand (for example, an antibody) of the present invention can also be used for selecting highly active proteins (in particular, mutant proteins, various monoclonal antibodies, etc.). In particular, it is effective for selecting a mutant protein having high biological activity or stability by point mutation or the like. Antibodies are particularly useful for selecting reconstituted antibodies such as chimeric antibodies and humanized antibodies from natural antibodies. In addition, multiple charged heterogeneous components detected in the protein substance (need to be used when applying the protein This is also an effective method for evaluating whether or not the detected plurality of minor peaks) are rProduced-Related Subs tances].
- ligand eg, antibody
- highly active proteins particularly, blood factors, mutant proteins, various monoclonal antibodies, etc.
- body fluids such as blood and serum
- Antibody fragments such as Fab, (Fab ') 2 , single-chain Fv ) And its binding activity can be measured simply and with high accuracy.
- FIG. 1 shows a sensorgram when PTHrP (1-34 + Cys) was immobilized.
- FIG. 3 shows a calibration curve (Duplicate) in the quantification of the amount of PTHrP binding.
- FIG. 4 shows the cycles that were ignored from day one due to sensorgram disturbances.
- FIG. 5 shows a sensorgram when protein A is immobilized.
- FIG. 6 shows a sensorgram (ICcycle, protein A) at the time of measuring anti-PTHrP antibody a (2. Og / mL).
- FIG. 7 shows a calibration curve (Duplicate) for quantification of the amount of protein A bound. This description includes part or all of the contents as disclosed in the description of Japanese Patent Application No. 2000-192829, which is a priority document of the present application. BEST MODE FOR CARRYING OUT THE INVENTION
- amount of binding PTHrP Contact and protein A anti-PTHrP antibody was respectively measured by BIAC0RE TM, a measure of the amount of binding of the anti-PTHrP antibody against PTHrP of anti-PTHrP antibody to protein A
- BIAC0RE TM a measure of the amount of binding of the anti-PTHrP antibody against PTHrP of anti-PTHrP antibody to protein A
- an anti-PTHrP antibody is produced according to the method described in W098 / 13388.
- HBS buffer HBS-EP Buf fer
- the anti-PTHrP antibody is diluted with water to prepare a solution of the anti-PTHrP antibody at an appropriate concentration (for example, 100 to 500 g), and this solution is diluted with HBS buffer to obtain various solutions.
- a sensor chip CM5 (BIAC0RE Inc., Code # BR- 1000- 14) to BIAC0RE TM sets, flow HBS buffer at a flow rate of 5 ⁇ 20 L / min.
- EDC N-ethyl-N '-(3-dimethylaminopropyl) -carbodiimide hydrochloride
- NHS N-hydroxysuccinimide
- a borate buffer solution of, for example, 150 L, PTHrP (1-34 + Cys) (a synthetic peptide obtained by adding Cys to the C-terminus of the peptide 34 of PTHrP )
- 40 mL of acetic acid buffer solution of cysteine sodium chloride for example, 150 xL of formic acid buffer solution of cysteine sodium chloride, 10 zL of glycine-hydrochloric acid buffer solution, for example, and IOL of 10 mM aqueous hydrochloric acid solution.
- l-34 + Cys is immobilized on the chip.
- EDC solution and NHS solution are mixed in equal volumes, for example, to 100 each.Acetate buffer solution of protein A, for example, 40 xL, ethanolamine-hydrochloride buffer, for example, 100 L, and daricin-hydrochloride buffer, for example, Protein A is immobilized on the chip by successively flowing, for example, 10 L of a 10 L aqueous solution of 10 mM hydrochloric acid.
- binding activity ratio (%) is calculated by the following equation. Binding activity of anti-PTHrP antibody Binding activity value of anti-PTHrP antibody and PTHrP
- Binding activity to protein A Concentration of binding between anti-PTHrP antibody and protein A-immobilized chip x of a standard sample
- the present invention will be specifically described by the following examples. These examples are illustrative and do not limit the scope of the invention.
- BIACORE TM upgrade (made by BIAC0RE)
- Sensor Chip Sensor Chip CM5: (made by BIACORE)
- Spectrophotometer DU-640 (BECKMAN)
- Running Buf fer HBS buf fer BIA Certifed (0. O IM HEPES pH 7.4, 0.15 M NaCl, 3 mM EDTA, 0.0053 ⁇ 4 (v / v) Surfactant P20) (BIACORE) Code # BR -1001-88 NHS: 0.05 M N-ydroxysuccinimide, amine coupling kit (BIACORE) Code # BR-1000-50
- EDC 0.2 M N-ethyl-N '-(3-dimethylaminopropyl) -carbodiimide hydrochloride, amine coupling kit (BIACORE) Code # BR-1000-50
- Ethanol amine-HCl (pH 8.5): Amine coupling kit (BIACORE) Code # BR-1000-50
- PTHrP (Table 34 + Cys): Synthetic product by Sude Corporation (cus tom pep tide JH 365, 21/11/94, B-CAL 35a.a.)
- Anti-PTHrP antibody a, b, c, d, e, f in house However, all are for research lot II.
- the flow rate was set to 5 L / min, the reagent was injected according to Table 1, and the antigen PTHrP (l-34 + Cys) was immobilized by the thiol coupling method.
- anti-PTHrP antibody 4 lots a, b, c, d ⁇ Then, the amount of PTHrP binding was measured by the following operation, and the difference between rods was examined.
- the unknown samples b, c, d are HBS solutions were prepared respectively.
- the flow rate was set to 5 L / min, the reagent was injected according to Table 2, and protein A was immobilized by the amine coupling method.
- the amount of PTHrP binding was measured by the same operation as in (1).
- the same measurement was performed on the protein A-immobilized chip to obtain a sensorgram and a binding amount.
- Figure 1 shows the immobilization of PTHrP.
- Fig. 2 shows a typical example of one gram of the obtained sensor.
- the sample concentration used for the quantification of the amount bound to the PTHrP (l-34 + Cys) -immobilized chip was determined using the conditions used in this experiment, ie, the concentrations of the standard samples for the calibration curve were 0,, 2, 3, 4, 5 g / mL At 6 points, the concentration of the unknown sample was set to about half, 2 g / mL.
- Figure 5 shows the immobilization of protein A. Based on the linearity of the sensorgram and the calibration curve (Figs. 6 and 7) obtained from the prepared protein A-immobilized chip, it was determined that the amount of ligand immobilized could be used for the quantitative system. In addition, it was confirmed that the calibration curve was sufficiently linear in the concentration range of 0 to 5 ⁇ g / mL used for measurement with the PTHrP (1-34-Cys) -immobilized chip. Therefore, the sample concentration for quantitative determination of the binding amount to the protein A-immobilized chip was set to the same condition as the PTHrP (l-34-Cys) -immobilized chip for both the calibration curve sample and the unknown sample.
- Binding activity value for PTHrP -X 100
- CAL binding activity was calculated using e.3 and summarized in a table (Table 8).
- f was 97.0%. Since the% cv value of the seven-time repeat accuracy was 0.95%, this difference was a significant difference, and it was suggested that ⁇ slightly reduced the activity with the antigen.
- Anti-PTHrP antibody binding activity ratio (BIAC0 E) (%)
- Binding activity value for PTHrP X100
- the present invention provides a simple and accurate method for measuring the biological activity of a ligand.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001267833A AU2001267833A1 (en) | 2000-06-27 | 2001-06-27 | Method of evaluating binding activity of ligand to ligand-binding protein |
JP2002506106A JP3515101B2 (ja) | 2000-06-27 | 2001-06-27 | リガンドとリガンド結合蛋白質との結合活性を評価する方法 |
EP01943834A EP1296140A4 (en) | 2000-06-27 | 2001-06-27 | METHOD OF MEASURING THE BINDING ACTIVITY OF LIGANDS WITH LIGANDING BINDING PROTEINS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000192829 | 2000-06-27 | ||
JP2000-192829 | 2000-06-27 |
Publications (1)
Publication Number | Publication Date |
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WO2002001224A1 true WO2002001224A1 (fr) | 2002-01-03 |
Family
ID=18691907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/005501 WO2002001224A1 (fr) | 2000-06-27 | 2001-06-27 | Procede d'evaluation de l'activite de liaison d'un ligand a une proteine de liaison aux ligands |
Country Status (5)
Country | Link |
---|---|
US (1) | US20030138870A1 (ja) |
EP (1) | EP1296140A4 (ja) |
JP (1) | JP3515101B2 (ja) |
AU (1) | AU2001267833A1 (ja) |
WO (1) | WO2002001224A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009099149A1 (ja) * | 2008-02-07 | 2009-08-13 | Shiseido Company, Ltd. | 抗d-アミノ酸モノクローナル抗体及び、抗d-アミノ酸モノクローナル抗体を用いたd-アミノ酸の免疫学的分析方法 |
JP2011007664A (ja) * | 2009-06-26 | 2011-01-13 | Fujifilm Corp | 抗体のスクリーニング方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE360208T1 (de) * | 2000-11-30 | 2007-05-15 | Chugai Pharmaceutical Co Ltd | Messverfahren für die bindungsaktivität eines liganden bindenden proteins mit geringer chemischer stabilität für den ersten liganden |
JP2005209795A (ja) * | 2004-01-21 | 2005-08-04 | Koito Mfg Co Ltd | 発光モジュール及び灯具 |
JPWO2006109533A1 (ja) * | 2005-03-31 | 2008-10-23 | 国立大学法人大阪大学 | 細胞膜表面抗原エピトープに対する抗体の作製法及びアッセイ法 |
AU2009255777A1 (en) * | 2008-06-02 | 2009-12-10 | Ge Healthcare Bio-Sciences Ab | Concentration assay |
US20160003815A1 (en) * | 2013-03-15 | 2016-01-07 | Inanovate, Inc. | Method, system, and device for analyte detection and measurement using longitudinal assay |
JP6625519B2 (ja) * | 2013-03-15 | 2019-12-25 | イナノベイト, インコーポレイテッド | アッセイシステムおよびカートリッジデバイス |
CN110398590B (zh) * | 2019-06-21 | 2022-11-15 | 深圳大学 | 传感芯片及应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09504859A (ja) * | 1993-05-24 | 1997-05-13 | フアーマシア・バイオセンサー・アー・ベー | 親和性及び反応速度特性の決定方法 |
WO1997045746A2 (en) * | 1996-05-29 | 1997-12-04 | Mcgill University | Prion protein binding proteins and uses thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5602041A (en) * | 1994-08-26 | 1997-02-11 | Sea Run Holdings, Inc. | Fish serum as a blocking reagent |
US5922845A (en) * | 1996-07-11 | 1999-07-13 | Medarex, Inc. | Therapeutic multispecific compounds comprised of anti-Fcα receptor antibodies |
US6737056B1 (en) * | 1999-01-15 | 2004-05-18 | Genentech, Inc. | Polypeptide variants with altered effector function |
-
2001
- 2001-06-27 WO PCT/JP2001/005501 patent/WO2002001224A1/ja not_active Application Discontinuation
- 2001-06-27 EP EP01943834A patent/EP1296140A4/en not_active Withdrawn
- 2001-06-27 AU AU2001267833A patent/AU2001267833A1/en not_active Abandoned
- 2001-06-27 JP JP2002506106A patent/JP3515101B2/ja not_active Expired - Fee Related
- 2001-06-27 US US10/312,346 patent/US20030138870A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09504859A (ja) * | 1993-05-24 | 1997-05-13 | フアーマシア・バイオセンサー・アー・ベー | 親和性及び反応速度特性の決定方法 |
WO1997045746A2 (en) * | 1996-05-29 | 1997-12-04 | Mcgill University | Prion protein binding proteins and uses thereof |
Non-Patent Citations (1)
Title |
---|
See also references of EP1296140A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009099149A1 (ja) * | 2008-02-07 | 2009-08-13 | Shiseido Company, Ltd. | 抗d-アミノ酸モノクローナル抗体及び、抗d-アミノ酸モノクローナル抗体を用いたd-アミノ酸の免疫学的分析方法 |
JP2011007664A (ja) * | 2009-06-26 | 2011-01-13 | Fujifilm Corp | 抗体のスクリーニング方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1296140A4 (en) | 2005-06-29 |
US20030138870A1 (en) | 2003-07-24 |
JP3515101B2 (ja) | 2004-04-05 |
EP1296140A1 (en) | 2003-03-26 |
AU2001267833A1 (en) | 2002-01-08 |
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