EP1999473A1 - Method for determining the therapeutic effectiveness of substances - Google Patents
Method for determining the therapeutic effectiveness of substancesInfo
- Publication number
- EP1999473A1 EP1999473A1 EP07723385A EP07723385A EP1999473A1 EP 1999473 A1 EP1999473 A1 EP 1999473A1 EP 07723385 A EP07723385 A EP 07723385A EP 07723385 A EP07723385 A EP 07723385A EP 1999473 A1 EP1999473 A1 EP 1999473A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sample
- peptide
- protein
- cell
- tissue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
-
- 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
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/502—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics for testing non-proliferative effects
- G01N33/5023—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics for testing non-proliferative effects on expression patterns
-
- 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
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/5044—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics involving specific cell types
-
- 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
Definitions
- the present invention relates to a method for determining the therapeutic efficacy of substances which contain as active ingredient at least one therapeutically active, biotechnologically produced protein and / or peptide.
- the present invention relates to a method for determining the therapeutic efficacy of substances containing as active ingredient at least one therapeutically active, biotechnologically produced protein and / or peptide, the method comprising the steps of: a) providing a cell, blood or tissue sample of human or animal origin or a sample of microbial origin, wherein the cell, blood or tissue sample or microbial sample is in a predefined biological state and for which at least one therapeutically active, biotechnologically generated protein and / or peptide has relevant target structures; b) labeling the at least one therapeutically active, biotechnologically produced protein and / or peptide while maintaining its in vivo binding properties; c) applying a reagent solution containing the at least one labeled therapeutically active protein and / or peptide to the sample, wherein the
- Psoriasis is a chronic inflammation of the skin, characterized by abnormal proliferation of the epidermal cells (hyperplasia) and increased cutaneous blood flow and in addition to the involvement of fingernails in some of the patients in addition to a disease of the joints leads so-called psoriatic arthritis.
- the treatment options depend on the disease being developed in the individual patient and often require a combination of several drugs.
- physical therapies such as UV irradiation exist at various points preparing preparations ranging from tar or nourishing ointments over the administration of vitamin A or D derivatives (eg Zorac®, Daivonex®) to the administration of hormones.
- efalizumab (Raptiva®). It is a humanized monoclonal IgG1 antibody directed against the molecule CD11a.
- CD11a ⁇ -L integrin
- CD18 ⁇ 2 integrin
- heterodimeric LFA-1 lymphocyte function-associated antigen-1
- LFA-I is expressed on lymphocytes, monocytes and neutrophils and plays an important role in cell-cell adhesion processes.
- efalizumab showed a significant improvement in the disease in 30-40% of patients within 12 weeks in clinical trials, thus offering at least some of the patients a new, promising form of therapy.
- WO 2005/112568 discloses a method for diagnosing or predicting the response of a patient to treatment with T-cell-reducing medicaments. For example, this method identifies various haplotypes that suggest that treatment with Alefacept (Amevive®) is promising. Alefacept belongs to the group of biologics or biologics and can be used to treat psoriasis.
- Alefacept belongs to the group of biologics or biologics and can be used to treat psoriasis.
- a disadvantage of such DNA-based methods is their complexity and the restriction to T cell-associated diseases.
- biologics do not work the same way in all patients. So far, a prediction of the principal effectiveness for the individual patient is hardly possible and is done according to the trial-and-error principle. Accordingly, it has not been possible in the run-up to a treatment to optimize dose detection and suitable therapy monitoring for the individual case.
- a method for determining the therapeutic efficacy of substances which contain as active ingredient at least one therapeutically active, biotechnologically produced protein and / or peptide comprises the following method steps: a) Provision of a cell, blood or tissue sample of human or animal origin or a sample of microbial origin, wherein the cell, blood or tissue sample or microbial sample is in a predefined biological state and for which at least one therapeutically active, biotechnologically generated protein and / or peptide have relevant target structures; b) labeling the at least one therapeutically active, biotechnologically produced protein and / or peptide while maintaining its in vivo binding properties; c) applying a reagent solution containing the at least one labeled therapeutically active protein and / or peptide to the sample, wherein the application of the reagent solution takes place under predefined application conditions and with predefined concentrations of the labeled therapeutically active and biotechnologically produced protein and / or peptide; d) determination of the binding behavior of the
- the advantage achievable with the invention consists, inter alia, in the fact that the method according to the invention, based on in-vitro binding studies, provides detailed information about the actual in-vivo action and activity Biologics side effect properties in the organ reference, thereby allowing both the prediction of the efficacy of the drug or biologics in question for the individual patient and targeted therapy management and monitoring with proven efficacy of the drug.
- the possibility of prediction also advantageously allows pharmacological-pharmaceutical development processes to be significantly shortened. Furthermore, it allows the reduction of animal studies and clinical trials.
- the application conditions according to method step c) include the variation of carrier solutions, temperature and pressure conditions.
- At least one of the therapeutically active biotechnologically produced proteins or peptides is selected from the group: efalizumab, alefacept, infliximab, etanercept, basiliximab, daclizumab, muromonab, trastuzumab, ibritumomab, bevacizumab, cetuximab, rituximab, omalizumab, alemtuzumab, adalimumab or polyclonal antibodies.
- Polyclonal antibodies may be, for example, a horse anti-T cell immune serum or rabbit anti-human T cell immune serum.
- the labeling according to process step b) is carried out by covalent binding of one or more fluorochromes and / or by covalent binding of one or more biotin molecules and / or by covalent binding of one or more dioxigenin molecules and / or Labeling with a secondarily labeled antibody and / or a radioactive label to the therapeutically active, biotechnologically produced protein and / or peptide.
- a fluorochrome used for labeling is, for example, fluorescein isothiocyanate (FITC).
- the determination of the binding behavior of the therapeutically active, biotechnologically produced protein and / or peptide at the relevant target structures of the samples according to method step d) comprises the detection of at least one labeling pattern of the labeled protein and / or peptide.
- the signal strength of the marker pattern is determined and compared with the signal strength of a marker pattern determined under the same experimental conditions of at least one reference sample Reference sample is a cell, blood or tissue sample or sample of microbial origin comparable to the sample tested.
- the reference sample can thereby be in a biological state comparable to the examined sample or in another biological state which differs from that of the examined samples.
- the biological conditions include healthy or disease-related conditions of cell, blood or tissue samples or microbial samples.
- the cell or tissue sample may be a skin tissue affected by psoriasis, an inflammatory skin disease, a skin tumor, an inflammatory tissue or a tumor tissue, and a normal, healthy skin tissue in the reference sample.
- a kit according to the invention for carrying out the methods described above comprises at least one therapeutically active, biotechnologically produced protein and / or peptide and at least one marker molecule, wherein the marker molecule does not influence the in vivo binding properties of the protein and / or peptide.
- the marker molecule may comprise fluorochromes and / or biotin molecules and / or dioxigenin molecules as well as additionally secondary antibodies.
- the therapeutically active, biotechnologically produced protein and / or peptide is selected from the following group: efalizumab, alefacept, infliximab, etanercept, basiliximab, daclizumab, muromonab, trastuzumab, ibritumomab, bevacizumab, cetuximab, rituximab, omalizumab, alemtuzumab, adalimumab or polyclonal antibodies .
- Polyclonal antibodies may be, for example, a horse anti-T cell immune serum or rabbit anti-human T cell immune serum.
- a biochip is additionally provided for carrying out the methods described above, wherein the biochip is a cell,
- Origin and the sample is in a predefined biological state and has relevant target structures for at least one therapeutically active biotechnologically produced protein and / or peptide.
- the therapeutically active, biotechnologically produced protein and / or peptide is chosen from the following group: efalizumab,
- Ibritumomab Ibritumomab, bevacizumab, cetuximab, rituximab, omalizumab, alemtuzumab,
- Adalimumab or polyclonal antibodies may be, for example, a horse anti-T cell immune serum or rabbit anti-human T cell immune serum.
- the therapeutically active, biotechnologically produced protein and / or peptide efalizumab and the cell or tissue sample is a skin sample which has been fixed while preserving the relevant target structures.
- the predefined biological condition of the skin sample is acutely psoriatic.
- Efalizumab will covalently labeled with fluorescein-5-exuccinimidyl ester, while retaining its in vivo binding properties.
- the labeled efalizumab is solubilized, with the screening conditions chosen to be as close as possible to the in vivo situation in the organ reference.
- the in-solution, labeled efalizumab and optionally at least one other in solution against different cell types and / or structural components of the extracellular matrix and / or structures characteristic of cell proliferation, activation and adhesion are characterized , directed marker molecule sequentially applied to the skin sample.
- the fluorescence labeling pattern is detected.
- the individual marking patterns are digitized and processed.
- the digitization and quantification of the detected signals is carried out by a method as described, for example, in EP 1 181 525.
- phase contrast image is first recorded. This is followed by the automatic detection of the molecular patterns for single and / or multiple epitopes. These images are made accessible by the aforementioned digitization of a computer-aided evaluation.
- the phase contrast image detected before the acquisition of the fluorescence images is used for the correct, pixel-precise superimposition of the corresponding fluorescence images.
- the images thus oriented are subjected to background and false exposure correction in a second step and finally freed in a third step from any artifacts and / or defective pixels. This is done by applying a mask operation which marks the erroneous signals as invalid and excludes them from the following evaluation.
- the digitized, processed images are binarized under the control of a specialist.
- One pixel represents the topographic micro unit (TMU) at an area of 450x450 nm 2 at 20x optical magnification.
- TMU topographic micro unit
- the area of the digitized visual field is below this Conditions maximum 2000 x 2000 pixels.
- the frequency of occurring pixel signals for the detected combinatorial marker patterns is set in relation to the horizontal width of the skin sample.
- the vertical gradient of the considered skin sample can be taken into account, which is formed from tissue in the transition, growth and differentiation state.
- the "pixel events normalized to horizontal skin width" parameter hereinafter referred to as PEN, is obtained.
- the relevant target structures of the skin sample are mainly in the dermal compartment.
- the detected, digitized and processed labeling patterns are used to determine the binding behavior of the labeled efalizumab in this compartment.
- the evaluation of the determined binding behavior with regard to the efficacy of efalizumab in the concrete in vivo organ reference is made by comparing the in vitro identification and quantification data for the determined efalizumab binding structures with the typical identification and quantification data for acute psoriatic skin samples responding to efalizumab ,
- the range of quantification values delineated with the aid of the further labeling molecules is between 1.1 ⁇ 10 3 PEN for MPO and 115 ⁇ 10 3 PEN for pan-CK and CD 138.
- Efalizumab binding structures are up to 15 times greater in acute psoriatic skin samples against unaffected skin samples of the patient suffering from acute psoriasis and up to 32 times against healthy skin.
- the quantitative values are 39.697 ⁇ 10.263 PEN.
- the presence of efalizumab binding structures with quantitatively increased PEN values compared to healthy skin means that efalizumab is in principle effective for the individual patient and also enables the determination of an optimal, individually adapted dosage via the quantification data.
- the therapeutically effective, biotechnologically produced protein and / or peptide efalizumab and the cell or tissue sample is a skin sample which has been fixed with preservation of the relevant target structures.
- the predefined biological condition of the skin sample is a non-affected skin sample of an acute psoriatic patient.
- an unaffected skin sample of an acutely psoriatic patient with principal efficacy of efalizumab over healthy control skin, there is a quantitative increase of the efalizumab binding structures up to 3-fold with PEN values of 2.598 ⁇ 2.448.
- the therapeutically effective, biotechnologically produced protein and / or peptide efalizumab and the cell or tissue sample is a skin sample which has been fixed with preservation of the relevant target structures.
- the predefined biological condition of the skin sample is a healthy skin sample of a non-psoriatic patient.
- the quantitative determination of efalizumab binding structures in healthy skin yields values of 1.205 ⁇ 873 PEN.
- the therapeutically effective, biotechnologically produced protein and / or peptide efalizumab and the cell or tissue sample is a skin sample which has been fixed with preservation of the relevant target structures.
- the predefined biological condition of the skin sample is an acute psoriatic skin sample.
- the relevant cellular targets are in T lymphocyte subpopulations which are positive for CD3, CD8, CD4, CD45RA, CLA and CD45R0.
- the TMU-based determination of the localization of efalizumab binding structures leads to colocalization values of up to 84% for CD3 + -, up to 80% for CD8 + -, up to 93% for CD4 + DCD3 + -, up to 54% for CD45RA + , up to 73% for CLA + , and up to 87% for CD45R0 + T lymphocytes.
- the basic efficacy of efalizumab for the specific patient can be determined by the characteristic of certain T lymphocytes as the target structure of efalizumab during its therapeutic application.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Biochemistry (AREA)
- Cell Biology (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Pathology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Organic Chemistry (AREA)
- Toxicology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Biophysics (AREA)
- General Engineering & Computer Science (AREA)
- Genetics & Genomics (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006012613A DE102006012613B4 (en) | 2006-03-17 | 2006-03-17 | Method for determining the therapeutic effectiveness of substances |
PCT/EP2007/002418 WO2007107320A1 (en) | 2006-03-17 | 2007-03-19 | Method for determining the therapeutic effectiveness of substances |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1999473A1 true EP1999473A1 (en) | 2008-12-10 |
Family
ID=38086290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07723385A Withdrawn EP1999473A1 (en) | 2006-03-17 | 2007-03-19 | Method for determining the therapeutic effectiveness of substances |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100311083A1 (en) |
EP (1) | EP1999473A1 (en) |
JP (1) | JP2009530590A (en) |
DE (1) | DE102006012613B4 (en) |
WO (1) | WO2007107320A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1722231A3 (en) * | 2005-04-27 | 2009-03-11 | MPB MelTec Patent- und Beteiligungsgesellschaft mbH | Method for identification of somatic stem cells |
DE102007056198B4 (en) * | 2007-11-21 | 2012-01-26 | Niels Grabe | Assessment of the effect of an endogenous or exogenous effect on epithelial tissue by mapping the tissue using labeled histological tissue sections |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19709348C2 (en) * | 1996-05-29 | 1999-07-01 | Schubert Walter Dr Md | Automatic multi-epitope ligand mapping process |
ATE265676T1 (en) * | 1996-05-29 | 2004-05-15 | Walter Dr Schubert | AUTOMATED DEVICE AND METHOD FOR MEASURING AND DETERMINING MOLECULES OR PARTS THEREOF |
WO2002084290A1 (en) * | 2001-04-13 | 2002-10-24 | Chugai Seiyaku Kabushiki Kaisha | Method of quantifying antigen expression |
JP4424987B2 (en) * | 2001-09-20 | 2010-03-03 | ボード オブ リージェンツ, ザ ユニバーシティ オブ テキサス システム | Measurement of circulating therapeutic antibodies, antigens and antigen / antibody complexes using an ELISA assay |
WO2005017529A1 (en) * | 2003-07-29 | 2005-02-24 | Genentech, Inc. | Assay for human anti cd20 antibodies and uses therefor |
US7183057B2 (en) * | 2004-03-31 | 2007-02-27 | Dermtech International | Tape stripping methods for analysis of skin disease and pathological skin state |
-
2006
- 2006-03-17 DE DE102006012613A patent/DE102006012613B4/en not_active Expired - Fee Related
-
2007
- 2007-03-19 JP JP2008558733A patent/JP2009530590A/en active Pending
- 2007-03-19 EP EP07723385A patent/EP1999473A1/en not_active Withdrawn
- 2007-03-19 US US12/282,687 patent/US20100311083A1/en not_active Abandoned
- 2007-03-19 WO PCT/EP2007/002418 patent/WO2007107320A1/en active Application Filing
Non-Patent Citations (2)
Title |
---|
LI KING C.P. ET AL: "Combined vascular targeted imaging and therapy: a paradigm for personalized treatment.", JOURNAL OF CELLULAR BIOCHEMISTRY. SUPPLEMENT 2002 LNKD- PUBMED:12552604, vol. 39, 2002, pages 65 - 71, ISSN: 0733-1959 * |
See also references of WO2007107320A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20100311083A1 (en) | 2010-12-09 |
WO2007107320A1 (en) | 2007-09-27 |
JP2009530590A (en) | 2009-08-27 |
DE102006012613B4 (en) | 2010-01-14 |
DE102006012613A1 (en) | 2007-09-20 |
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Inventor name: BOECKELMANN, RAIK Inventor name: POMMER, ANSGAR, JOSEF Inventor name: BASTIAN, ANJA Inventor name: SCHULZE, YANINA Inventor name: KOENNECKE, MANDY Inventor name: PHILIPSEN, LARS Inventor name: GOLLNIK, HARALD Inventor name: BONNEKOH, BERND Inventor name: BARTSCH, SEBASTIAN |
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