EP1242817A2 - Verfahren zur feststellung neurologisch relevanter eigenschaften eines materials - Google Patents
Verfahren zur feststellung neurologisch relevanter eigenschaften eines materialsInfo
- Publication number
- EP1242817A2 EP1242817A2 EP00987424A EP00987424A EP1242817A2 EP 1242817 A2 EP1242817 A2 EP 1242817A2 EP 00987424 A EP00987424 A EP 00987424A EP 00987424 A EP00987424 A EP 00987424A EP 1242817 A2 EP1242817 A2 EP 1242817A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- neurologically relevant
- neurologically
- relevant material
- nematode
- neurotoxic
- 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- Withdrawn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
- 239000000463 material Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 20
- 241000244206 Nematoda Species 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims description 31
- 231100000189 neurotoxic Toxicity 0.000 claims description 20
- 230000002887 neurotoxic effect Effects 0.000 claims description 20
- 108090000623 proteins and genes Proteins 0.000 claims description 9
- 230000000926 neurological effect Effects 0.000 claims description 7
- PLRACCBDVIHHLZ-UHFFFAOYSA-N 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine Chemical compound C1N(C)CCC(C=2C=CC=CC=2)=C1 PLRACCBDVIHHLZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000556 agonist Substances 0.000 claims description 4
- 239000005557 antagonist Substances 0.000 claims description 4
- 210000003169 central nervous system Anatomy 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000002703 mutagenesis Methods 0.000 claims description 4
- 231100000350 mutagenesis Toxicity 0.000 claims description 4
- 241000244202 Caenorhabditis Species 0.000 claims description 2
- 201000010099 disease Diseases 0.000 claims description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 2
- DIVDFFZHCJEHGG-UHFFFAOYSA-N oxidopamine Chemical group NCCC1=CC(O)=C(O)C=C1O DIVDFFZHCJEHGG-UHFFFAOYSA-N 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims 1
- 241001465754 Metazoa Species 0.000 description 18
- 241000282412 Homo Species 0.000 description 8
- 238000010171 animal model Methods 0.000 description 7
- 241000244203 Caenorhabditis elegans Species 0.000 description 6
- 241000124008 Mammalia Species 0.000 description 4
- 101001135571 Mus musculus Tyrosine-protein phosphatase non-receptor type 2 Proteins 0.000 description 4
- 230000003542 behavioural effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000004660 morphological change Effects 0.000 description 4
- WTDRDQBEARUVNC-LURJTMIESA-N L-DOPA Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-LURJTMIESA-N 0.000 description 2
- WTDRDQBEARUVNC-UHFFFAOYSA-N L-Dopa Natural products OC(=O)C(N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-UHFFFAOYSA-N 0.000 description 2
- 208000016285 Movement disease Diseases 0.000 description 2
- 238000011534 incubation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 241000282693 Cercopithecidae Species 0.000 description 1
- 101710138657 Neurotoxin Proteins 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 102000037865 fusion proteins Human genes 0.000 description 1
- 108020001507 fusion proteins Proteins 0.000 description 1
- 230000001418 larval effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000009630 liquid culture Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 208000035851 morphological anomaly Diseases 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000001537 neural effect Effects 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 239000002581 neurotoxin Substances 0.000 description 1
- 231100000618 neurotoxin Toxicity 0.000 description 1
- 239000002547 new drug Substances 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 238000011533 pre-incubation Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 230000000946 synaptic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- G01N33/5082—Supracellular entities, e.g. tissue, organisms
- G01N33/5085—Supracellular entities, e.g. tissue, organisms of invertebrates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/43504—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from invertebrates
- G01N2333/43526—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from invertebrates from worms
- G01N2333/4353—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from invertebrates from worms from nematodes
- G01N2333/43534—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from invertebrates from worms from nematodes from Caenorhabditis
Definitions
- the present invention relates to a method for determining neurological properties of a material;
- the present invention relates to a method for examining the suitability of a material as a pharmaceutical for mammals, that is, among others, humans.
- neurologically relevant means that the material can have an influence on the central nervous system of humans in particular, for example as a neurotoxic substance or as a substance or a material which can cancel or alleviate the action of the neurotoxic substance.
- material in the sense of the present invention means that either a single substance or compositions of several substances are used.
- the invention thus relates to a method for determining a neurologically relevant property of a material, wherein at least one nematode is used which works with at least one neurologically relevant material (agonist / antagonist) and optionally with a second neurologically relevant material of opposite direction of action (antagonist / agonist). is offset and wherein a deviation from or in the case of the use of a first and second neurologically relevant material a maintenance or resetting of a normal state allows a determination of the neurological relevance of at least one of the materials used.
- the method according to the invention can be used in particular to determine whether a certain material is likely to have a positive influence on disease-related changes in the central nervous system, particularly of humans.
- a neurotoxic substance will regularly be used as the first neurologically relevant material in the method according to the invention.
- this method is also suitable for identifying genes which are involved in the expression of the action of neurotoxic substances.
- the invention thus consists in a method in which nematodes are first subjected to a mutagenesis and the genetically modified animals or their offspring are then mixed with a neurologically relevant material, as described above.
- Those animals in which no behavioral or morphological anomalies or differences in comparison to non-mutagenized animals can be observed can carry genes which have been altered, inactivated or destroyed by the mutagenesis and whose products are not or in any other way than in non- mutagenized animals act.
- the method described thus serves to identify genes which mediate or suppress the expression of the action, for example of neurotoxic substances.
- the invention thus furthermore relates to a method for identifying neurologically relevant genes, in which nematodes are first subjected to targeted mutagenesis and then the genetically modified animals or their offspring are exposed to at least one neurologically relevant material, as described above.
- Neurologically relevant gene in the context of the present aspect of the invention means that the gene is involved in the expression of the action of a neurologically relevant material in some way. This neurological relevance can be, for example, that the mutated nematode has a different reaction (behavior or morphology) to neurotoxic substances compared to the non-mutated nematode.
- the nematodes can be exposed to the materials to be examined in a variety of ways. For example, it is possible to cultivate the animals in petri dishes with an agar which contains neurotoxic substances on the one hand and the substances of interest on the other. But you can also easily in the animals bathe examining materials. This variant is not only particularly simple, but also enables easier standardization of the concentrations and higher throughput in a screening system. Populations of the animals are used for an investigation, which are then incubated with different solutions of the materials and in different concentrations. The inventors' experiments have now shown that substances which can revert neurotoxically induced Parkinson's in both human and non-human primates can also do so in C. elegans. This shows that C.
- elegans can be used as a suitable model system for Parkinson's.
- the observation, namely the reversion or prevention of the behavioral anomaly or the morphological change after neurotoxin treatment allows a conclusion to be drawn about the possible effectiveness and the site of action of a material whose suitability as a pharmaceutical is to be investigated.
- C. elegans as an animal model for examining materials with regard to their suitability as a pharmaceutical in humans or other mammals allows reliable predictions, in particular when it comes to the reactions to neurotoxic substances and the reversion or prevention of these reactions. It has been shown that behavioral anomalies can be brought about in a simple manner by adding neurotoxic substances to nematodes kept in liquid culture.
- test animals of the roundworm C. elegans
- a defined developmental stage e.g. Ll larval stage
- liquid medium e.g. 20 ° C
- they were exposed to the neurotoxic substance MPTP in concentrations between 16-500 ⁇ g / ml for a few hours to several days (e.g. in Figure A after three days).
- FIGS. A, B A pronounced phenotype was observed in an observation period of a few minutes to several days (in FIGS. A, B on day 6). This can result in severe movement disorders, reduced progeny or morphological changes.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Immunology (AREA)
- Hematology (AREA)
- Cell Biology (AREA)
- Chemical & Material Sciences (AREA)
- Urology & Nephrology (AREA)
- Molecular Biology (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Biotechnology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19962263A DE19962263A1 (de) | 1999-12-22 | 1999-12-22 | Verfahren zur Feststellung neurologisch relevanter Eigenschaften eines Materials |
| DE19962263 | 1999-12-22 | ||
| PCT/EP2000/013022 WO2001046690A2 (de) | 1999-12-22 | 2000-12-20 | Verfahren zur feststellung neurologisch relevanter eigenschaften eines materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1242817A2 true EP1242817A2 (de) | 2002-09-25 |
Family
ID=7933975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00987424A Withdrawn EP1242817A2 (de) | 1999-12-22 | 2000-12-20 | Verfahren zur feststellung neurologisch relevanter eigenschaften eines materials |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20030108893A1 (de) |
| EP (1) | EP1242817A2 (de) |
| AU (1) | AU2367201A (de) |
| DE (1) | DE19962263A1 (de) |
| WO (1) | WO2001046690A2 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6329566B1 (en) * | 1997-05-29 | 2001-12-11 | The General Hospital Corporation | Methods for the detection, treatment, and prevention of neurodegeneration |
| EP0996708A4 (de) * | 1997-07-11 | 2004-09-08 | Gen Hospital Corp | Transgene nematodmodell für neurologische krankheiten mit triplettwiederholungen |
| US6787125B1 (en) * | 1999-04-15 | 2004-09-07 | Devgen Nv | Compound screening method |
| GB9908677D0 (en) * | 1999-04-15 | 1999-06-09 | Devgen Nv | Compound assay |
-
1999
- 1999-12-22 DE DE19962263A patent/DE19962263A1/de not_active Ceased
-
2000
- 2000-12-20 US US10/168,558 patent/US20030108893A1/en not_active Abandoned
- 2000-12-20 EP EP00987424A patent/EP1242817A2/de not_active Withdrawn
- 2000-12-20 WO PCT/EP2000/013022 patent/WO2001046690A2/de not_active Ceased
- 2000-12-20 AU AU23672/01A patent/AU2367201A/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0146690A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2367201A (en) | 2001-07-03 |
| US20030108893A1 (en) | 2003-06-12 |
| WO2001046690A3 (de) | 2002-06-27 |
| WO2001046690A2 (de) | 2001-06-28 |
| DE19962263A1 (de) | 2001-07-12 |
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Legal Events
| Date | Code | Title | Description |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: AVENTIS PHARMA DEUTSCHLAND GMBH |
|
| 17P | Request for examination filed |
Effective date: 20021227 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SANOFI-AVENTIS DEUTSCHLAND GMBH |
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| 17Q | First examination report despatched |
Effective date: 20071012 |
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| GRAP | Despatch of communication of intention to grant a patent |
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| GRAS | Grant fee paid |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
Effective date: 20100406 |