WO2004003198A1 - アレルギー性疾患の検査方法、および治療のための薬剤 - Google Patents
アレルギー性疾患の検査方法、および治療のための薬剤 Download PDFInfo
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- WO2004003198A1 WO2004003198A1 PCT/JP2003/008199 JP0308199W WO2004003198A1 WO 2004003198 A1 WO2004003198 A1 WO 2004003198A1 JP 0308199 W JP0308199 W JP 0308199W WO 2004003198 A1 WO2004003198 A1 WO 2004003198A1
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- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2227/00—Animals characterised by species
- A01K2227/10—Mammal
- A01K2227/105—Murine
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/03—Animal model, e.g. for test or diseases
- A01K2267/0306—Animal model for genetic diseases
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- 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
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/112—Disease subtyping, staging or classification
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- 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
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/136—Screening for pharmacological compounds
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- 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
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/158—Expression markers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/20—Dermatological disorders
- G01N2800/202—Dermatitis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/24—Immunology or allergic disorders
Definitions
- the present invention provides a method for testing an allergic disease using the expression of a NOR-1 gene associated with an allergic disease as an index, and a method for screening a therapeutic drug candidate for an allergic disease.
- the present invention relates to a drug for treating allergic diseases.
- Allergic diseases such as atopic dermatitis are considered to be multifactorial diseases. These diseases are caused by the interaction of the expression of many different genes, and the expression of these individual genes is affected by several environmental factors. Therefore, it is very difficult to elucidate the specific genes that cause specific diseases.
- allergic diseases are thought to be related to the expression of mutated or defective genes, or overexpression or decreased expression of specific genes. Understanding the role of gene expression in disease requires an understanding of how genes are involved in efforts and how external stimuli, such as drugs, alter gene expression There is.
- DD Differen-Chanole display
- the differential display method was first developed in 1992 by Liang and Pardee (Science, 1992, 257: 967-971). By using this method, dozens of samples or more can be screened at a time and expressed in those samples. It is possible to detect a gene whose expression has changed. Using such methods to examine genes that have been mutated or whose expression changes with time and environment is expected to provide important information for elucidating pathogenic genes. These genes include those whose expression is affected by environmental factors.
- the leukocyte histamine release test and the lymphocyte blastogenesis test are methods for observing the immune system's response to allergens at low temperatures. These methods are complicated in operation.
- a method of using the immune response observed when a patient is actually brought into contact with an allergen to diagnose allergens is also known. Prick's tests, scratch tests, patch tests, intradermal reactions, or provocation tests are included in this type of test. While these tests can directly diagnose a patient's allergic reaction, it can be described as a highly invasive test that actually exposes the subject to allergens.
- test methods have been attempted to prove the involvement of allergic reactions regardless of the allergen.
- a high serum IgE level may indicate that the patient has an allergic reaction.
- the serum IgE value is information corresponding to the total amount of allergen-specific IgE. IgE regardless of the type of allergen Determining the total dose is easy, but IgE may be low in patients with diseases such as non-atopic bronchitis.
- Eosinophil counts and ECP levels are diagnostic parameters associated with delayed or allergic inflammatory responses following type I allergy. Eosinophil numbers are said to reflect the development of allergic symptoms. ECP (eosinophil cationic protein), a protein contained in eosinophil granules, is also strongly activated with asthma attacks. These diagnostic items certainly reflect allergic symptoms. However, the range that can be actually used as a diagnostic index is limited.
- the present invention has been made in view of such circumstances, and an object thereof is to identify a gene associated with an allergic disease. Furthermore, the present invention provides a method for testing an allergic disease using the expression of the gene as an index, a method for screening a candidate compound for a therapeutic drug for an allergic disease, and a drug for treating an allergic disease. The purpose is to do.
- the present inventors have prepared from a plurality of human blood based on the procedure of the “Fluorescent DD (DD) method” already established (T. Ito et al., 1994, FEBS Lett. 351: 231-236).
- DD system capable of analyzing RNA samples of leukocyte cells has been developed (Japanese Patent Application No. 11-12048) 9). Using this system, we attempted to identify genes whose expression levels differed specifically for allergic diseases.
- the present inventors compared some parameters related to allergic symptoms in patients with atopic dermatitis, which is a typical allergic disease, between the exacerbation period and the remission period of skin inflammatory symptoms. did. As a result, a decrease in eosinophils during remission was observed in some patients. In general, eosinophils are regarded as a representative clinical index of atopic dermatitis, and the present inventors have paid attention to this finding. And, if it is possible to isolate genes whose expression levels change in eosinophils between the exacerbation period and remission period of the same patient, it is possible to isolate genes directly involved in atopic dermatitis I thought it would be.
- eosinophils were collected during the exacerbation period and remission period of atopic dermatitis, and the above system was used to screen for genes whose expression levels change in eosinophils.
- the sequence “2250-01” showing a significantly higher expression level was successfully isolated in patients in whom eosinophil reduction was observed during remission.
- NOR-1 nuclear orphan receptor
- the NOR-1 receptor is an orphan receptor, and no in vivo ligand-activator has been found so far.
- the present inventors have developed a high-throughput system for searching for a ligand, and have succeeded in obtaining a compound which is considered to have a transcription activation activity of NOR-1 by using this system.
- the compound is a prostaglandin (PGA derivative) having a pentenone structure in the mouth, and it was considered that it may be an in vivo ligand of the NOR-1 receptor.
- a PGA derivative is a ligand active substance of NOR-1.
- the present inventors simulated the binding position of the PGA derivative to the NOR-1 ligand binding region using a pharmacophore model, and found that the PGA derivative matched the binding pocket based on the structure-activity relationship information in the reporter system of the PGA derivative.
- Compounds other than derivatives were selected from the database. These compounds are expected to function as ligands for the NOR-1 receptor.
- Compounds that induce the expression of the NOR-1 gene or compounds that bind to the N0R-1 receptor and promote transcriptional activity are expected to have a therapeutic effect on allergic diseases.
- the present invention relates to a method for detecting an allergic disease using as an index the expression of the N0R-1 gene, which is highly expressed during an allergic disease, particularly during a remission period accompanied by a decrease in eosinophils, and a method for treating an allergic disease. More specifically, the present invention relates to a method for screening a drug candidate compound, and a drug for treating an allergic disease.
- a reagent for testing an allergic disease comprising a polynucleotide encoding a NOR-1 receptor protein or an oligonucleotide having a nucleotide sequence complementary to a complementary strand thereof and having a length of at least 15 bases;
- a polynucleotide encoding a NOR-1 receptor protein (b) a polynucleotide that hybridizes under stringent conditions to a polynucleotide encoding a NOR-1 receptor protein, wherein the polynucleotide is expressed in eosinophils along with a decrease in eosinophils during the remission of atopic dermatitis.
- a method for detecting the effect of a candidate compound on the expression level of a polynucleotide encoding a NOR-1 receptor protein comprising the following steps (1) and (2): (1) Contacting a candidate compound with a cell or cell extract containing DNA having a structure in which the transcription regulatory region of the gene encoding the NOR-1 receptor protein is functionally linked to a reporter gene Process, and
- (10) a method according to (9), comprising detecting the effect of the candidate conjugate on the activity, and selecting a compound that increases the activity compared to a control, the NOR-1 receptor A method for screening a compound that increases the expression level of a gene encoding a protein,
- a method of screening a candidate compound for a therapeutic drug for an allergic disease comprising the following steps (1) to (4):
- a therapeutic agent for allergic diseases comprising as an active ingredient a compound obtainable by the screening method according to any of (10) to (12);
- a therapeutic drug for an allergic disease comprising as an active ingredient prostagnadin having a pentenone structure which can be obtained by the screening method according to any one of (10) to (12);
- Prostaglandins having a cyclopentenone structure include prostaglandin A 2 , prostaglandin A or 16,16-dimethyl prostaglandin A 2 , 15 (R) -15-methyl prostaglandin A 2 , Selected from the group consisting of 16-phenoxytetranor prostaglandin A 2 , 17-phenyl trinor prostaglandin A 2 , 15-dexoxy-delta 12,14-prostaglandin J 2 , and 8-isoprostaglandin; (16) The drug for treating an allergic disease according to (16),
- an allergotic disease model animal comprising a transgenic non-human vertebrate having reduced expression intensity of the polynucleotide according to (a) or (b) below in eosinophil cells,
- the transgenic animal is a knockout animal The model animal described in [20],
- a cell is contacted with a conjugate or a prostaglandin having a cyclopentenone structure obtainable by the screening method according to any one of [10;] to [12].
- the cell is an eosinophil cell, (22) or the method of inducing apoptosis according to (23),
- an apoptosis inducer comprising a compound obtainable by the screening method according to any one of [10] to [: 12] or a prostaglandin having a pentenone structure.
- Prostaglandin having a cyclopentenone structure is: Prostaglandin A 2 , prostaglandin, 16,16-dimethyl prostaglandin A 2 , 15 (R) ⁇ 15-methyl prostaglandin A 2 , 16-phenoxytetranor prostaglandin A 2 , 17-phenyl trinor prostaglandin A 2 , 15-deoxy-delta 12,14-prostaglandin J 2 , and 8-iso An apoptosis-inducing agent according to (27), which is selected from the group consisting of prostaglandins.
- the present inventors have studied the NOR-1 (MINOR) gene (sometimes simply referred to as "N0R-1") in the comparison between the exacerbation period and the remission period in patients with atopic dermatitis. In addition, it was found that the expression level was increased in eosinophils of patients in remission with a decrease in eosinophils. Therefore, the subject can be tested for an allergic disease by indicating the expression level of the NOR-1 gene.
- NOR-1 MINOR
- the present invention provides a method for testing allergic monogenic disease, which comprises measuring the expression level of the N0R-1 gene.
- a preferred embodiment of the method of the present invention comprises the following steps.
- NOR-1 (MINOR) receptor is a nucleus constituting three subfamilies with various names as shown in Table 1. It is an r-type of inner orphan receptor, and is mainly called NOR-1 across species. table 1
- NOR-1 (MINOR) receptor proteins Information on the amino acid sequence of these NOR-1 (MINOR) receptor proteins or the nucleotide sequence of the gene encoding the protein is known to those skilled in the art. It can be easily obtained from a gene database or the like. Specifically, the nucleotide sequence of the gene encoding the human N0R-1 receptor protein (NOR-1 gene) is shown in SEQ ID NO: 1, and the amino acid sequence of the NOR-1 receptor protein is shown in SEQ ID NO: 2. .
- an allergic disease is a general term for diseases associated with allergic reactions. More specifically, it can be defined as identifying an allergen, demonstrating a deep link between exposure to the allergen and the development of the lesion, and demonstrating an immunological mechanism for the lesion.
- the immunological mechanism means that white blood cells show an immune response by stimulation of allergen. Examples of allergens include mite antigens and pollen antigens.
- allergic diseases can include bronchial asthma, allergic rhinitis, atopic dermatitis, hay fever, or insect allergy.
- Allergic diathesis is a genetic factor transmitted from a parent with an allergic disease to a child.
- a familial allergic disease is also called atopic disease, and the genetic factors that cause it are predisposed to atopy.
- Atopic dermatitis is a generic name given to atopic diseases, especially those accompanied by dermatological symptoms.
- the test for an allergic disease in the present invention includes the following tests. For example, a test to determine whether the subject is affected by an allergic disease, a test to determine whether the subject is susceptible to an allergic disease, or a determination of whether allergic symptoms are improving And the like for inspection.
- the N0R-1 gene of the present invention showed an increased expression level in eosinophils of atopic dermatitis patients in remission, particularly with a decrease in eosinophils. Since eosinophils are a representative clinical marker for atopic dermatitis, clinical markers associated with their reduction are useful for determining the therapeutic effect. More specifically, increased expression of the NOR-1 gene indicates that allergic disease is being improved with eosinophil depletion.
- the severity of atopic dermatitis correlates with the number of eosinophils, and aggressive reduction of eosinophil counts may lead to treatment.
- This gene which is specifically induced by eosinophils as the number decreases, and finding a method or substance that can be actively induced from outside the cell, a new treatment for atopic dermatitis can be achieved. It may lead to a method and a diagnostic method to evaluate it.
- the expression level of the NOR-1 gene includes transcription of the gene into mRNA and translation into a protein. Therefore, the method for detecting an allergic disease according to the present invention is performed based on the comparison of the expression intensity of mRNA corresponding to the gene or the expression level of a protein encoded by the gene.
- the measurement of the expression level of the NOR-1 gene in the method for testing an allergic disease of the present invention can be carried out by those skilled in the art according to a known gene analysis method. Specifically, for example, a hybridization technique using a nucleic acid that hybridizes to the NOR-1 gene as a probe or a gene amplification technique using a DNA that hybridizes to the gene of the present invention as a primer can be used.
- the probe or primer used as the reagent for testing an allergic disease of the present invention includes a polynucleotide comprising the nucleotide sequence of SEQ ID NO: 1 or a polynucleotide comprising at least 15 nucleotides complementary to a complementary strand thereof.
- complementary strand refers to one strand of a double-stranded DNA consisting of A: T (U in the case of RNA) and G: C base pairs with respect to the other strand.
- phase-like is not limited to a case where the sequence is completely complementary in at least 15 contiguous nucleotide regions, and is at least 70%, preferably at least 80%, more preferably 90%, and still more preferably Should have a homology of 95% or more on the base sequence.
- the homology of the nucleotide sequences can be determined by anoregorhythm such as BLASTN.
- Such a polynucleotide can be used as a probe for detecting and isolating the polynucleotide encoding the protein of the present invention, and as a primer for amplifying the polynucleotide of the present invention.
- primer When used, it usually has a chain length of 15 bp to 100 bp, preferably 15 bp to 35 bp.
- a DNA having at least a part or the entire sequence of the polynucleotide of the present invention and a chain length of at least 15 bp is used.
- the 3'-side region needs to be complementary, but a restriction enzyme recognition sequence tag or the like can be added to the 5'-side.
- the “polynucleotide” in the present invention can be DNA or RNA. These polynucleotides may be synthetic (isolated) or natural.
- the probe DNA used for hybridization is usually labeled. As the labeling method, for example, the following methods can be shown.
- the term oligonucleotide means a polynucleotide having a relatively low degree of polymerization. Oligonucleotides are included in polynucleotides.
- Testing for allergic diseases using hybridization technology includes, for example, Northern hybridization, dot plotting, and DNA microarray. It can be performed using the method used. Furthermore, gene amplification techniques such as the RT-PCR method can be used. In the RT-PCR method, more quantitative analysis can be performed on the expression of the gene of the present invention by using the PCR amplification method in the gene amplification process.
- probes that are labeled with different fluorescent dyes that cancel each other's fluorescence on both ends are used to hybridize to the detection target (DNA or RNA reverse transcript).
- the detection target DNA or RNA reverse transcript.
- the two fluorescent dyes separate and the fluorescence is detected. This fluorescence is detected in real time.
- the number of copies of the target in the target sample is determined by the number of linear cycles of the PCR amplification by simultaneously measuring the standard sample whose copy number is known for the target (Holland, PM et al., 1991). Natl. Acad. Sci.
- PCR amplification monitor method for example, ABI PRISM7700 (PE Biosystems) can be used.
- the method for detecting an allergic disease of the present invention can also be performed by detecting a protein encoded by the NOR-1 gene.
- a detection method for example, a Western plotting method using an antibody that binds to a protein encoded by the gene, an immunoprecipitation method, an ELISA method, and the like can be used.
- Antibodies that bind to the NOR-1 protein used for this detection can be obtained using techniques well known to those skilled in the art.
- the antibody used in the present invention can be a polyclonal antibody or a monoclonal antibody (Milstein C, et al., 1983, Nature 305 (5934): 537-40).
- a polyclonal antibody against the protein of the present invention is obtained by removing the blood of a mammal sensitized with the antigen and subjecting the blood to a known method. More serum is separated. Serum containing a polyclonal antibody can be used as the polyclonal antibody. Alternatively, if necessary, a fraction containing a polyclonal antibody can be further isolated from the serum.
- immune cells are removed from a mammal sensitized with the above antigen, and are fused with myeloma cells.
- the hybridoma thus obtained can be cloned, and the antibody can be recovered from the culture and used as a monoclonal antibody.
- these antibodies may be appropriately labeled and used. Further, without labeling the antibody, a substance that specifically binds to the antibody, for example, protein A or protein G can be labeled and detected indirectly. As a specific detection method, for example, an ELISA method can be mentioned.
- the protein or its partial peptide used for the antigen is, for example, a NOR-1 gene or a part thereof is incorporated into an expression vector, and this is introduced into an appropriate host cell to prepare a transformant, and the transformant is transformed.
- the recombinant protein can be obtained by culturing the body to express the recombinant protein, and purifying the expressed recombinant protein from the culture body or the culture supernatant.
- an oligonucleotide consisting of a partial amino acid sequence of the amino acid sequence encoded by the NOR-1 gene can be chemically synthesized and used as an immunogen.
- eosinophil cells of a subject are preferably used as a sample.
- Eosinophil cells can be prepared from peripheral blood by a known method. That is, for example, heparin-collected blood is fractionated by centrifugation to separate white blood cells. Next, granulocytes can be separated from leukocytes by centrifugation with Ficoll, etc., and eosinophils can be further separated by depletion of neutrophils using the CD16 antibody. If the separated eosinophils are destroyed to form a lysate, it can be used as a sample for immunological measurement of the protein.
- a sample for measuring mRNA corresponding to the gene can be obtained. can do.
- eosinophil lysate and mRNA it is convenient to use a commercially available kit.
- the expression level of the gene to be used as an index in the present invention may be measured for whole blood or peripheral blood leukocyte populations without separating eosinophils.
- a change in the expression level of the gene in the cell can be obtained by correcting the measured value.
- a gene to be used as an index in the present invention based on a measured value of the expression level of a gene (housekeeping gene) which is specifically expressed in eosinophils and whose expression level does not largely fluctuate regardless of the state of the cell The expression level measurement can be corrected.
- the protein to be detected is a secretory protein
- the amount of the target protein contained in a body fluid sample such as blood or serum of the subject is measured to determine the gene encoding the protein. Comparison of expression levels is possible.
- the present invention also relates to an animal model for allergic diseases comprising a transgenic non-human animal in which the expression level of the polynucleotide described in the following (a) or (b) is reduced in eosinophil cells.
- the expression level decrease includes a knockout state in which the function of a gene has been substantially lost.
- the state in which the function of a gene is substantially lost means the expression of the gene or the activity of the protein encoded by this gene. A state in which sex cannot be found.
- the expression level of the gene can be confirmed, for example, by quantitative PCR as described in Examples. In addition, the fact that the activity of the protein as a translation product is not substantially found can be confirmed by comparison with a normal state.
- transgenic animals include, for example, animals that have been unable to express the original protein activity by introducing mutations in the coding region of the gene and artificially causing amino acid sequence mutations or termination codons. And so on. Mutations in the amino acid sequence can indicate substitutions, deletions, insertions, or additions.
- the expression itself of the gene of the present invention can be regulated by mutating the transcription regulatory region of the gene.
- transgenic animals for specific genes are known. That is, a method in which a gene and an egg are mixed and treated with calcium phosphate, or a method in which a gene is directly introduced into a nucleus of a pronuclear stage egg with a micropipette under a phase contrast microscope (microinjection method, US Pat. No. 4,873,191).
- Transgenic animals can be obtained by methods using embryonic stem cells (ES cells).
- ES cells embryonic stem cells
- a method of introducing a gene into a retrovirus vector and infecting an egg, and a sperm vector method of introducing a gene into an egg via sperm have been developed.
- the sperm vector method is a genetic recombination method in which a foreign gene is introduced into sperm cells by attaching a foreign gene to sperm or by electroporation or the like, and then fertilizing the egg to introduce the foreign gene ( M. Lavitranoet et al. Cell, 57, 717, 1989).
- transgenic animal of the present invention can be prepared using any vertebrate other than human. Specifically, transgenic animals have been created in which vertebrates such as mice, rats, porch egrets, miniature pigs, goats, sheep, and porcupines have had their gene introduction and expression levels altered.
- the expression of homologue in a non-human animal species of the human NOR-1 gene having the nucleotide sequence shown in SEQ ID NO: 1 is suppressed.
- Knockout animals are included. By observing the phenotype of a knockout animal, the function of the knocked out gene can be specifically known.
- the expression of the NOR-1 gene consisting of the nucleotide sequence shown in SEQ ID NO: 1 was elevated in eosinophils during remission with reduction of eosinophils in atopic dermatitis in humans. Therefore, an animal in which the homolog is knocked out is useful as a model animal for allergic diseases. For example, if the knockout animal according to the present invention develops dermatitis or shows a change in a measurement value related to any allergic disease, a screening system that searches for a compound that has an action to restore it can be constructed. .
- Methods for producing knockout animals are known. For example, a method for producing a knockout animal by performing homologous recombination using an embryonic stem cell in a mouse and selecting an embryonic stem cell in which one allele is modified / disrupted is selected. For example, a fertilized egg is injected with embryonic stem cells whose genes have been manipulated to obtain a chimeric animal in which cells derived from embryonic stem cells and cells derived from embryos are mixed. When this chimeric animal (a chimera is a single individual formed from somatic cells based on two or more fertilized eggs) is bred to a normal mouse, all of one allele is altered and destroyed. Terozygotes can be made. Furthermore, homozygotes can be prepared by crossing heterozygotes. The transgenic animal according to the present invention includes both these heterozygotes and homozygotes.
- the recombination is a recombination that occurs between two genes that have the same or very similar nucleotide sequences in the genetic recombination mechanism.
- PCR can be used to select cells that have undergone homologous recombination.
- a PCR reaction was performed using a part of the inserted gene and a part of the region expected to be inserted as primers, and it was found that homologous recombination had occurred in the cells in which the amplification product was formed.
- neomycin resistance gene is linked to the introduced gene, and the cells are selected by neomycin resistance after introduction. Can be easily selected using known methods and their modifications.
- the present inventors have succeeded in establishing a transgenic (TG) mouse in which the expression of the human NOR-1 gene is actually induced by the actin promoter, as shown in Examples described later.
- TG transgenic
- the above-mentioned TG mouse can be shown.
- the transgenic animal according to the present invention can be used for screening of drugs for treating or preventing allergic diseases, which will be described later, as well as for elucidating the mechanism of allergic diseases and for further improving the safety of screened compounds. Useful for testing.
- the expression level of the N0R-1 gene is increased in eosinophils of atopic dermatitis patients in remission with eosinophil depletion. Therefore, animals in which the expression level of the NOR-1 gene or a gene functionally equivalent to this gene in eosinophil cells has been artificially reduced should be used as model animals for allergic diseases. Can be.
- the decrease in the expression level in eosinophils includes a decrease in the expression level of the gene in the whole leukocyte population. That is, the expression level of the gene is decreased not only by eosinophils but also by the expression level of the gene in the whole leukocyte population.
- the functionally equivalent gene usually means any of the genes described in the above (a) or (b). More specifically, the gene functionally equivalent in the present invention includes a gene that hybridizes under stringent conditions to a gene encoding NOR-1. Generally, the following conditions can be shown as stringent conditions in the present invention. For example, hybridization is carried out at 4 ⁇ SSC at 65 ° C., and washing is performed at 65 ° C. for 1 hour using 0.1 ⁇ SSC. The temperature conditions for hybridization and washing, which greatly affect the stringency, can be adjusted according to the melting temperature (Tm). Tm occupies the hybridizing base pair.
- Tm melting temperature
- model animal in the present invention for example, the above-described transgenic animal or the like can be used.
- the present invention provides a method for detecting the effect of a candidate compound on the expression level of the polynucleotide of the present invention.
- the expression level of the NOR-1 gene is significantly increased in eosinophils of atopic dermatitis patients in remission with a decrease in eosinophils. Therefore, a therapeutic agent for an allergic disease can be obtained by selecting a compound capable of increasing the expression level based on a method for detecting the effect on the expression level of these genes.
- the compound that increases the expression level of a gene is a compound that has an action of inducing any of the steps of gene transcription, translation, and protein activity expression.
- the present invention further provides a method for detecting the activity (transcription activating ability) of the NOR-1 gene product protein in addition to the expression level of the NOR-1 gene, and further comprises providing a method for detecting the NOR-1 gene product protein.
- the method for detecting the effect of the candidate compound on the expression level of the polynucleotide of the present invention can be performed in vivo or in vitro.
- the test animal includes, for example, an allergic disease model animal, or an allergic monogenic disease comprising a transgenic non-human animal in which expression of the gene described in (a) or (b) in eosinophil cells is suppressed. Model animals can be used.
- the detection of the effect on the expression level in iniw according to the present invention can be performed, for example, according to the following steps. (1) Step of administering a candidate compound to a test animal (2) a step of measuring the expression level of the polynucleotide according to (a) or (b) in eosinophil cells of a test animal
- a transgenic animal having reduced expression of the NOR-1 gene by expressing antisense of the N0R-1 gene can be used.
- Such a transgenic animal can be created, for example, as follows. That is, first, a full-length sequence or a partial sequence of the sequence of the N0R-1 gene is incorporated in a reverse direction downstream of an appropriate promoter sequence to construct an antisense RNA expression vector. By introducing this expression vector into the nucleus, a transgenic animal expressing the antisense of the NOR-1 gene and having reduced expression of the NOR-1 gene can be obtained.
- a promoter whose transcription is regulated by a substance such as an appropriate drug is used as a motor used in the expression vector, the expression level of the NOR-1 gene in transgenic animals can be adjusted by administering the substance. can do.
- the N0R- By administering a drug candidate compound to the model animal in which the expression of the N0R-1 gene has been reduced in this way and monitoring the action of the compound on the expression of the NOR-1 gene in eosinophils of the model animal, the N0R- The effect of the drug candidate compound on the expression level of one gene can be detected.
- drugs that are involved in various forms in the expression of the NOR-1 gene can be selected.
- drug candidate compounds having the following action points can be found.
- a candidate compound is brought into contact with cells expressing the gene described in the above (a) or (b), and the expression level of the gene is detected.
- cells for use in step (1) can be obtained by inserting these polynucleotides into an appropriate expression vector and introducing the vector into an appropriate host cell.
- Usable vectors and host cells may be any as long as they can express the gene of the present invention. Examples of host cells in the host-vector system include Escherichia coli, yeast, insect cells, animal cells, and the like, and available vectors can be appropriately selected.
- Examples of a method for introducing a vector into a host include a biological method, a physical method, and a chemical method.
- Biological methods include, for example, a method using a virus vector, a method using a specific receptor, a cell fusion method (HVJ (Sendai virus), polyethylene glycol (PEG), an electric cell fusion method, micronuclear fusion). Law
- Examples of the 'physical method' include a method using a microinjection method, an electoral-portion method, and a method using a gene particle gun.
- Chemical methods include calcium phosphate precipitation, liposome method, DEAE dextran method, protoplast method, erythrocyte ghost method, erythrocyte membrane ghost method, and microcapsule method.
- leishocyte leukocytes can also be used as the cells expressing the polynucleotide described in the above (a) or (b).
- leishocyte leukocytes can also be used.
- established leukocyte cells include leukocyte-derived established cells such as Eol, YY-1, HL-60, TF-1, and AML14.3D10.
- leukocyte cell lines cell lines derived from eosinophils are: It is suitable for the detection method of the present invention.
- Examples of cell lines derived from eosinophils include Eo1, YY-1, AML14.3D10 and the like.
- Eol (Eol-1: Saito H et al, Establishment and character ization of a new human eosinophilic leukemia cell line. Blood 66, 1233 1240, 1985) can be obtained from Hayashibara Institute. Similarly, YY-1 (Ogata N et al, The activat ion od the JAK2 / STAT5 pathway is commonly involved in signaling through the human IL-5 receptor. Int. Arch.Allergy Immunol., Suppl 1, 24-27, 199 7 ) Is provided by Site Signal Laboratory.
- AML14.3D10 (Baumann MA et al, The AML14 and AML14.3D10 cell lines: a long-overdue model for the st udy of eosinophils and more.Stem cells, 16, 16-24, 1998) Commercially available from Paul CC at Research Service, VA Medical Center Dayton.
- HL-60 clone 15 which is an undifferentiated leukocyte cell line, can differentiate into eosinophils and become an eosinophil cell line when cultured for about one week in the presence of butyric acid. Wear. Eosinophils can be distinguished morphologically by the presence of eosinophil granules in polymorphonuclear nuclei. Morphological observation is performed by Giemsa staining or Diff Quick staining. In general, a human leukocyte cell line containing eosinophils can be established by closing immortalized cells from a leukemia patient sample.
- eosinophil cell line by a known method, if necessary.
- a candidate conjugate is added to the established leukocyte cells. Thereafter, the expression level of the polynucleotide described in the above (a) or (b) in the leukemia leukocyte cells is measured, and a compound that increases the expression level of the gene is selected.
- Transformed cells in which the expression of the polynucleotide described in the above (a) or (b) is regulated can be used as the cells for the detection method in the present invention.
- Such transformed cells include, for example, antisense Examples include cells transformed with an expression vector.
- Transformed cells using the antisense expression vector can be obtained according to the same principle as in the preparation of the transgenic animal. Using the obtained transformed cells, the effect of the candidate compound on the expression level of the gene can also be detected.
- the expression levels of the polynucleotides described in the above (a) or (b) can be compared by detecting not only the expression levels of the proteins encoded by these genes but also the corresponding mRNAs. You can also.
- the above-described mRNA sample preparation step is performed instead of the protein sample preparation step. Detection of mRNA or protein can be performed by a known method as described above.
- a transcriptional regulatory region of the NOR-1 gene can be obtained, and a reporter atssay system can be constructed.
- the reporter-assay system refers to an assay system that screens for a transcriptional regulatory factor acting on the transcriptional regulatory region, using the expression level of a reporter gene expressed under the control of the transcriptional regulatory region as an index downstream of the transcriptional regulatory region. .
- transcription control region examples include a promoter, an enhancer, and a CMT box, a TATA box, etc. which are usually found in a promoter region.
- CAT chloramphenicol acetyltransferase gene transfer gene, luciferase (lucif erase) gene, growth hormone gene, etc.
- CAT chloramphenicol acetyltransferase gene transfer gene, luciferase (lucif erase) gene, growth hormone gene, etc.
- Those skilled in the art can obtain the transcription regulatory region of the NOR-1 gene by a general method, for example, the following method.
- a human genomic DNA library such as a BAC library, a YAC library, etc. by a method using PCR or hybridization, and the sequence of the cDNA is obtained.
- a genomic DNA clone containing The transcription regulatory region of the NOR-1 gene is estimated based on the obtained genome DNA sequence, and the transcription regulatory region is obtained. Place the resulting transcriptional regulatory region upstream of the reporter gene Crawling to construct a reporter construct.
- the resulting reporter construct is introduced into a cultured cell line to obtain a transformant for screening.
- the action of the candidate conjugate on the transcription regulatory region can be evaluated.
- screening of a compound that changes the expression level of the polynucleotide can be performed.
- the present invention relates to a method for screening a compound that changes the expression level of the polynucleotide described in the above (a) or (b), comprising the following steps.
- the present invention detects the effect of a candidate compound on the expression level of the polynucleotide in in >> o and / or ⁇ 'iro, and selects a compound that increases the expression level compared to a control.
- the present invention relates to a method for screening a compound acting on a transcription regulatory region by a reporter assay utilizing the transcription regulatory region of the NOR-1 gene.
- a compound that induces the expression of NOR-1 gene can be obtained by selecting a compound that increases the expression of the reporter transgene compared to the target, based on the results of the reporter assay according to the present invention.
- the present invention relates to a method for screening an agonist or an antagonist that binds to a ligand domain.
- the NOR-1 (MINOR) receptor protein found by the present inventors as a protein associated with an allergic disease is an orphan receptor, and no in vivo ligand active substance has been found so far.
- the ligand active substance of NOR-1 protein is thought to directly activate NOR-1 in eosinophil cells and promote apoptosis. Therefore, the ligand active substance of NOR-1 receptor is allergic It is expected to be a therapeutic drug for diseases. Usually, by searching for a compound that can bind to a receptor protein, it is possible to obtain a ligand for the receptor.
- the present invention provides a method for screening a candidate compound for a therapeutic drug for an allergic disease, which comprises selecting a compound capable of binding to the NOR-1 protein.
- the test compound is brought into contact with the NOR-1 receptor protein, then the binding activity between the NOR-1 receptor protein and the test compound is measured, and the compound that binds to the NOR-1 receptor protein is determined. select. In addition to simply binding, the transcriptional activity of NOR-1 is measured, and agonists and antagonists are selected.
- the NOR-1 receptor protein in the present method also includes its partial peptide.
- the measurement of the binding activity between the NOR-1 receptor protein and the test compound in the above method can be carried out by those skilled in the art using a known method.
- the screening method of the present invention can be performed by a West Western blotting method. Specifically, a cDNA library using a phage vector (Agtll, ZAPII, etc.) was prepared from tissues or cells that are expected to express a protein (test protein) that binds to the NOR-1 protein. This is expressed on LB-agarose, and the expressed protein is immobilized on the filter. Next, NOR-1 protein is biotin-labeled or purified as a fusion protein with GST protein, which is reacted with the above filter, and plaques expressing the test protein are detected using a streptavidin-anti-GST antibody or the like. By performing the above, the binding activity can be evaluated.
- a cDNA library using a phage vector Agtll, ZAPII, etc.
- Another embodiment of the method for screening a candidate compound for a therapeutic drug for allergic diseases of the present invention includes the following steps.
- DNA capable of expressing a fusion protein of a N0R-1 receptor protein or a ligand domain of the protein and a transcriptional regulatory protein Providing a cell into which DNA having a structure in which a reporter gene is functionally linked downstream of a DNA sequence to which the protein binds is introduced.
- the term “functionally bound” in the above method means that when the N0R-1 receptor protein or a ligand binding region of the protein binds to a ligand of the receptor protein or a ligand-like compound, It refers to the state in which the reporter gene is linked so that it can be expressed.
- GAL4 protein can be suitably used as the “transcription regulatory region-binding protein” in the above method.
- the “DNA sequence capable of binding to a transcription regulatory region binding protein” includes, for example, a GAL4-binding DNA region.
- the above-mentioned screening method of the present invention can be performed in high throughput.
- the NOR-1 protein or its partial peptide is usually expressed in yeast cells by fusing it with the GAL4 DNA binding IB region and binding to the N0R-1 protein or its partial peptide.
- a cDNA library was prepared that could be expressed in a form fused with the VP16 or GAL4 transcriptional activation region, and introduced into the yeast cells described above. (When a protein that binds to the NOR-1 protein or a partial peptide containing its ligand-binding domain is expressed in yeast cells, the reporter gene is activated by the binding of both, and a positive clone can be confirmed.) .
- the protein encoded by the cDNA can be obtained by introducing the isolated cDNA into Escherichia coli for expression. This makes it possible to prepare a protein or its gene that binds to the NOR-1 protein or its partial peptide.
- reporter genes used in the two hybrid systems include, for example, HIS3 gene, Ade2 gene, LacZ gene, CAT gene, Norenfuefuse, PAI-1 (Plasminogen activator inhibitor typel) jfcfe gene and the like. However, it is not limited to these. Screening by the two-hybrid method can also be performed using a mammalian cell or the like in addition to yeast.
- the present inventors have applied a two-hybrid system using mammalian cells to construct a high-snoreput system capable of screening for a ligand that increases the transcriptional activation function of the N0R-1 protein. .
- This system is an improvement of the conventional two-hybrid system in mammals, and the outline of this system is shown in FIG. 3 (for details, see Examples below).
- the screening method of the present invention can be preferably performed using the high-throughput system developed by the above-mentioned investigators.
- NOR-1 is different from other subfamilies (biS) in that not only the ligand-binding domain but also the AF1 domain near the N-terminus (Fig. 4) is important for transcriptional activity.
- the N0R-1 protein that forms a fusion protein with GAL4 in the above method is preferably not only a ligand domain but also a full-length protein.
- NOR-1 is induced to be expressed in a state in which leukocytes such as atopic dermatitis peripheral blood are hyperactive, and as a result, it is highly possible that apoptosis is induced in cells.
- Ligands present in vivo may be present in places where nuclear receptors are highly expressed.
- the present inventors carried out screening according to the above-mentioned method using a low-molecular-weight fat-soluble mediator, which is expected to be produced under such conditions, as a ligand-complement test compound.
- the present inventors have proposed that, among the lipophilic mediators, ligand actives [[4 substances, prostaglandin A 2 (prostaglandin A 2 ), prostaglandin (prostaglandin), 16, 16-dimethinole prostaglandin A 2] (16, 16-dimethyl prostaglandin A 2 ), 15 (R) -15-methyl prostaglandin A 2 (15 (R) -15-methyl prostaglandin A 2 ), 16-phenoxytetranor prostaglandin A 2 (16-phenoxy tetranor prostaglandin A 2 ), 17- phenylene Honoré Rinonore ⁇ b Sutaguranjin A 2 (17- phenyl trinor prostaglandin A 2), 15- Dokishi - Anoreta 12, 14 prostaglandin J 2 (15 deoxy-deltal2 Prostaglandin J 2 ), 8-iso prostaglandin (8-iso prostaglandin), etc. were successfully obtained.
- These compounds are prostaglandins having
- Screening for a compound that binds to the N0R-1 protein can also be carried out using ab initia mouth chromatography.
- the NOR-1 protein is immobilized on a carrier of an affinity column, and a test sample that is expected to express a protein that binds to the N0R-1 protein is applied here.
- the test sample include a cell extract and a cell lysate.
- the column can be washed and the protein bound to the NOR-1 protein can be prepared.
- the obtained protein can be obtained by, for example, analyzing the amino acid sequence of the protein, synthesizing oligo DNA based on the amino acid sequence, and screening the cDNA library using the DNA as a DNA to obtain a DNA encoding the protein. Can be obtained.
- a biosensor utilizing the surface plasmon resonance phenomenon can be used as a means for detecting or measuring the bound compound.
- a biosensor using the surface plasmon resonance phenomenon can observe the interaction between the NOR-1 protein and the test compound in real time as a surface plasmon resonance signal (for example, BIAcore, manufactured by Pharmacia). Therefore, it is possible to evaluate the binding between the NOR-1 protein and the test compound by using a pyrosensor such as BIAcore.
- Isolation of compounds that bind to the NOR-1 protein can be routinely performed by those skilled in the art. Methods other than the above include, for example, a method in which a synthetic compound, a natural product bank, or a random phage peptide display library is allowed to act on immobilized N0R-1 protein, and a molecule that binds to the protein of the present invention is screened. Can be shown.
- kits can also include candidate compounds and instructions used as positive and negative controls.
- the kit for detecting the effect of the candidate conjugate on the expression level of the NOR-1 gene and the transcriptional activation mechanism according to the present invention modifies the expression level of the NOR-1 gene and the transcriptional activation mechanism It can be used as a compound screening kit.
- the candidate test compound used in the screening method of the present invention is not particularly limited, and examples thereof include a compound prepared by an existing chemical method such as a steroid derivative, a compound prepared by combinatorial chemistry, Animal 'plant group Examples include a mixture containing a plurality of compounds such as a tissue extract or a microorganism culture, a purified protein, an expression product of a gene library, and a library of synthetic peptides.
- a low-molecular-weight fat-soluble mediator as the test candidate compound.
- the compound selected by the screening method of the present invention is useful as a therapeutic drug for allergic diseases.
- the expression of the NOR-1 gene is increased in eosinophils along with the decrease in eosinophils during the period of remission of atopic dermatitis. Therefore, compounds that can enhance the expression or function of this gene can be expected to have the effect of suppressing the symptoms of atopic dermatitis. Further, the compound selected by the screening method of the present invention is expected to be a therapeutic drug for allergic diseases having a completely new mechanism of activation of NOR-1 and accompanying induction of eosinophil apoptosis. You.
- the present invention provides a therapeutic agent for an allergic disease containing, as an active ingredient, a compound obtainable by the screening method of the present invention.
- the above-mentioned compounds also include conjugates in which a part of the structure of the compound which can be isolated by using the screening method of the present invention is converted by addition, deletion and Z or substitution.
- the present inventors have proposed a cyclopentenone structure as a compound (NOR-1 ligand active substance) that enhances the transcriptional activation ability of NOR-1 among the lipophilic '14 mediators. Prostaglandin was found.
- a therapeutic agent for allergic disease of the present invention for example, a therapeutic agent for allergic disease containing, as an active ingredient, a prostaglandin having a cyclopentenone structure obtainable by the screening method of the present invention is preferably mentioned.
- the prostaglandin include prostaglandin A 2 (prostaglandin A 2 ), prostaglandin A (s) 16,16-dimethyl prostaglandin A 2 (16,16-dimethyl prostaglandin A 2 ), 15 (R) -15-methyl prostaglandin A 2 (15 (R) -15-methyl prostaglandin A 2 ), 16-phenoxytetranole prostaglandin A.
- Examples include 8-iso prostaglandin A and the like.
- the substance having a ligand activity of the NOR-1 receptor of the present invention is considered to induce eosinophil apoptosis and have an antiallergic effect. Therefore, the present invention provides an apoptosis inducer containing a ligand of the NOR-1 receptor as an active ingredient, and a therapeutic drug for an allergic disease containing a ligand of the NOR-1 receptor as an active ingredient.
- the apoptosis inducer of the present invention is preferably an eosinophil apoptosis inducer.
- Examples of the ligand for the NOR-1 receptor include the above-mentioned prostaglandins having a pentenone structure, and the compounds described in Tables 14 to 58 described later.
- Other compounds that affect the transcription of N0R-1 include, for example, the literature "Abayratna Wa nsa KS, Harris Jl, Yan G, Ordentlich P, Muscat GE, The AF-1 domain of NO R-1 / NR4A3 mediates trans-act Compounds described in ivation, coactivator recruitment, and action by the purine anti-metabolite 6-Mercaptopurine; J Biol Chem. 2003 April 22 [E-publication ahead of print] J.
- those skilled in the art can easily develop a synthetic ligand for N0R-1 (MINOR) by inferring from a docking study with the three-dimensional structure of N0R-1.
- a “docking study” is usually a 3D query based on the tertiary structure of a receptor, a compound that will be sold to the ligand-binding domain from a three-dimensional database of several hundred thousand compounds, and a conformation. Means to search on a computer.
- the docking study is performed, for example, according to the following procedures (1) to (4).
- references related to 3D Pharamocophore search include, for example, Pharmacophore Perception, Development, ana Use in Drug Design (Iul Biotechnology Series, 2) -US-ISBN: 0963681761 (Hardcover) Guner, Osman F. (Edt) / Publisher: Intl Univ Line Published 1999/12.
- a drug containing such a synthetic ligand as an active ingredient is also included in the therapeutic agent for an allergic disease of the present invention.
- the present inventors have found for the first time that the expression of the NOR-1 receptor of the present invention is specifically induced in eosinophils, and have therefore searched for low-molecular ligands of the receptor. More specifically, the pharmacophore model simulates the binding position of the PGA derivative to the NOR-1 ligand binding region, and, based on the structure-activity relationship information in the PGA derivative reporter system, Compounds were selected from the database. Accordingly, the ligands of the NOR-1 receptor of the present invention include the compounds selected as described above. More specifically, the compounds listed in Tables 14 to 58 can be shown. These compounds are believed to be more useful than agonist antibodies to the receptors of the present invention.
- the present inventors have also found that eosinophil CD30 ligand stimulation increases the expression of the NOR-1 gene.
- the present invention relates to an agent for inducing the expression of the NOR-1 gene, which comprises a ligand for the eosinophil CD30 receptor.
- the expression inducer is expected to be a therapeutic drug for allergic diseases by controlling the expression of the downstream gene of Norl in eosinophils to induce eosinophil apoptosis.
- the remedy for allergic diseases of the present invention can also be produced by mixing with a physiologically acceptable carrier, excipient, diluent or the like.
- the key of the present invention The therapeutic agent for allergic disease can be administered orally or parenterally for the purpose of ameliorating allergic symptoms.
- dosage forms such as granules, powders, tablets, capsules, solvents, emulsions, and suspensions can be selected.
- Parenteral preparations include, for example, injections, suppositories, liniments and the like. Examples of the injection include a subcutaneous, a preparation, an intramuscular injection, an intraperitoneal injection, and the like.
- the dosage varies depending on the age, sex, weight and condition of the patient, therapeutic effect, administration method, processing time, or the type of active ingredient contained in the pharmaceutical composition, but is usually once per adult.
- the present inventors have found that apoptosis is induced in cells by enhancing the expression of the NOR-1 receptor protein. Therefore, it is possible to induce apoptosis by activating NOR-1 protein in cells. Therefore, the present invention provides a method for inducing cell apoptosis, which comprises activating a NOR-1 receptor protein in a cell. The above method also includes a method of inducing cell apoptosis by activating the expression of the NOR-1 gene.
- apoptosis is induced by contacting a cell with a compound obtainable by the screening method of the present invention or a prostadalandin having a pentenone structure.
- the cells in the above method of the present invention are preferably eosinophil cells. It is known that peripheral blood eosinophil counts decrease during remission in the treatment of atopic dermatitis. Therefore, by eosinophils specifically leading to cell death using the method of the present invention, It is possible to treat sexual diseases. That is, the present method is useful as a method for treating allergic diseases.
- the compounds obtainable by the screening method of the present invention or the prostaglandins having a pen-mouthed pentenone structure are considered to have an effect of inducing apoptosis. Also provided is an apoptosis inducing agent.
- FIG. 1 is a graph showing the expression level (copy / ng RNA) of 2250-01 in atopic dermatitis patients (patient Nos. 1 to 7) corrected by S-actin during the exacerbation period and the remission period.
- FIG. 2 is a graph showing the expression level of the NOR-1 gene measured at the 0RF site only in patients whose eosinophil count decreases from the bad period to the remission period.
- FIG. 3 is a diagram schematically showing a ligand search system for the NOR-1 receptor constructed by the present inventors. And the full length gene of ret inoic acid X receptor (RXR) a in Y. These are transfected into NIH3T3 cells, and the induced luciferase activity is measured.
- RXR ret inoic acid X receptor
- FIG. 4 is a diagram schematically showing the structure of the NOR-1 receptor protein.
- FIG. 5 is a diagram showing the NOR-1 transcriptional activation effect of prostaglandin A 2 and rostagland in A, when the system of FIG. 3 is used.
- Figure 6 shows that the pharmacophore model simulates the binding position of the PGA derivative to the NOR-1 ligand binding region, using 15 (10 -15 -methyl-g-staglandin A 2 (15 (R)- 15_Methyl- Prostaglandin A. It is a figure of in gamma mode 1).
- FIG. 7 is a graph showing the results of the transcriptional activity reduction of Prostaglandin A 2 by LBD deletion mutants of NOR-1.
- ALBD is a deletion mutant.
- FIG. 8 is a diagram illustrating a state in which PGA1 and PGA2 are coupled to the LBD of NOR-1 using the via core S51. GST was used as a control. 13, 14-dihydro-15-keto-PGA2 was used as a negative control.
- FIG. 9 is a graph showing the result of NOR-1 expression induction when peripheral blood eosinophils were stimulated with apoptosis by an anti-CD30 antibody or an anti-Fas antibody. The beta-actin correction value and the GAPDH correction value are shown.
- FIG. 10 is a graph showing the effect of inducing apoptosis when an eosinophil-specific cell line, AML14.3D10, is treated with an anti-CD30 antibody and an anti-Fas antibody.
- FIG. 11 is a graph showing the induction of expression of NOR-1 when AML14.3D10, an eosinophil-specific cell line, was treated with an anti-CD30 antibody or an anti-Fas antibody.
- FIG. 12 is a diagram showing the working hypothesis of treatment of allergic disease by eosinophil cell death by the nuclear receptor Nur subfamily containing Norl.
- FIG. 13 is a photograph of a N0R-1 transgenic mouse and a wild-type mouse.
- the characteristics of the transgenic mice include a decrease in body weight by half, thymus atrophy, and spleen atrophy.
- Table 2 shows the profiles of the seven patients with atopic dermatitis from which blood was collected. Allergen non-specific (Total IgE), mite and cedar-specific IgE were measured by the EIA method. That is, the test serum was reacted with the cap to which the anti-human IgE antibody had been bound, and the allergen non-specific IgE antibody or the mite or cedar-specific IgE antibody in the serum was bound. Next, -D-galactosidase-labeled anti-human IgE antibody and a substrate solution (4-methylpenbergeryl-) S-D-D-galactopyranoside were added and reacted to generate a fluorescent substance.
- Total IgE Total IgE
- mite and cedar-specific IgE were measured by the EIA method. That is, the test serum was reacted with the cap to which the anti-human IgE antibody had been bound, and the allergen non-specific IgE antibody or the mite or cedar-specific
- the reaction was stopped by adding a reaction stop solution, and the antibody concentration was determined from the fluorescence intensity of standard IgE measured at the same time.
- LDH was measured by the UV method (Wroblewski-La Due method), and the rate of decrease in NADH due to the reaction between pyruvate and NADH was calculated from the decrease in absorbance.
- the LDH value was measured using an L-type ⁇ LDH (Wako Pure Chemical Industries) and a Model 7170 automatic analyzer (Hitachi).
- the eosinophil count was measured by microscopy and an automatic blood cell analyzer SE-9000 (RF / DC impedance method, manufactured by Sysmex) using 2 ml of EDTA-added blood sample.
- T-lgE 6100 7100 2600 2100
- Eosinophils (%) Zero 11: 7 :; ⁇ :; W: 1 8.6 12.1 13.4 Eosinophils
- Non-steroid face Non-steroid face: Non-steroid face: Non-steroid face: Locoid Locoid
- a 3% dextran solution was added to whole blood collected from the patient, and left at room temperature for 30 minutes to sediment erythrocytes.
- the upper leukocyte fraction was collected, placed on a Vikol solution (Ficoll-Paque PLUS; Amersham Pharmacia Biotech), and centrifuged at 1500 rpm for 30 minutes at room temperature.
- the granulocyte fraction collected in the lower layer was reacted with CD16 antibody magnetic beads at 4 ° C for 30 minutes, and the cells eluted without trapping by separation using MACS were used as eosinophils in the experiment.
- RNA was isolated from this solution according to the protocol attached to Isogen.
- a black-mouthed form was added, and the mixture was centrifuged with stirring to collect an aqueous layer.
- isopropanol was added, and the mixture was centrifuged with stirring to collect the total RNA in the precipitate.
- the collected total RNA was added with DNase (Nippon Gene; Wako Pure Chemical Industries, Ltd.), reacted at 37 ° C for 15 minutes, extracted with phenol-look form, and recovered with ethanol precipitation.
- DD analysis was performed according to the method described in the literature (T. Ito et al., 1994, FEBS Lett. 351: 231-236).
- cDNA was prepared using 0.2 // g of total RNA for each of the three anchor primers.
- cDNA was prepared using 0.4 g of RNA for each of the three anchor primers. All cDNAs were diluted to a final concentration of 0.4 ng / l RNA and used for experiments.
- DD-PCR reaction was performed using cDNA equivalent to 1 ng RNA per reaction. Table 3 shows the composition of the reaction solution. Table 3 shows the composition of the reaction solution. Table 3
- the PCR reaction conditions were as follows: ⁇ 95 ° C for 3 minutes, 40 ° C for 5 minutes, 72 ° C for 5 minutes '' for one cycle, followed by ⁇ 94 ° C for 15 seconds, 40 ° C for 2 minutes, 72 ° C for 1 minute '' after 30 cycles The temperature was raised to 72 ° C for 5 minutes and then continuously to 4 ° C.
- the primer pairs used were arbitrary primers AG 1 to 110 and AG 111 to GT15A (SEQ ID NO: 3), GT15C (SEQ ID NO: 4), and GT15G (SEQ ID NO: 5) as anchor primers, respectively.
- 199 and AG 200-287 were combined and a total of 287 sets of reactions were performed.
- an oligomer composed of 10 nucleotides having a GC content of 50% was designed, synthesized, and used.
- the primer and TaqMan probe used for the measurement with ABI 7700 were designed by Primer Express (PE Biosystems) from the sequence information obtained by the differential display method.
- the 5 'end of the Taq Man probe is labeled with FAM (6-carboxy-fluorescein) and the 3' end is labeled with TAMRA (6-carboxy-N, N, N, N, -tetramethylrhodamine)
- Reaction composition of ABI-PRISM 7700 (reaction amount per 1 ⁇ ) Sterile distilled water 25.66 ( ⁇ )
- TAMRA 6-carboxy— N, N, ', N, -tetramethylr odamine
- E Eosinophils
- N Neutrophils
- the monocyte fraction collected in the intermediate layer by Ficoll centrifugation is fractionated by MACS CD3 antibody magnetic beads as an eluted fraction (a mixture of monocyte and B cell) (T cell fraction). Separated. Next, the eluted fraction was applied to MACS CD14 antibody magnetic beads.
- the eluted fraction (B cell fraction) and the trapped fraction (moocyte fraction) were divided into purified T cells, purified B cells, and purified monocytes.
- Eosinophils are solubilized using Isogen, neutrophils, T cells, B cells, and monocytes using RNeasy (Qiagen), extracted with total RNA, and treated with DNase (as described above) for gene expression analysis. Provided. The used primers and probes are the same as above. The average expression level in these blood cells (AVERAGE: copy / ng (correction value)) was as follows. Eosinophil (E): 960
- the base sequence analysis of 2250-01 was proceeded by the 5, RACE method. Furthermore, cloning by plaque hybridization was performed using a phage cDNA library prepared from peripheral blood eosinophil RNA using the SMART cDNA Library Construction kit (CL0NTECH). A plasmid containing the sequence of 2250-01 was amplified into type II using primers 2250-01F and 2250-01R designed within the sequence of 2250-01, and the purified 259 bp PCR product was used as a probe. As a result, a clone having an insert of about 2 kb containing the sequence of 2250-01 was obtained. The determined base sequence of 2087 bp is shown in SEQ ID NO: 15. Genome database analysis revealed that this sequence is the intron portion of the nuclear orphan receptor called NOR-1 (MINOR).
- NOR-1 NOR-1
- Primerl (5 '): TGGGTGCCCTGGTAGAACT (SEQ ID NO: 16)
- TaqMan probe AGGAAGATCTGCACCCTGGGCCTC (SEQ ID NO: 18)
- peripheral blood eosinophils Genetic enhancement of peripheral blood eosinophils that suggests such an apoptotic character during remission by treatment of atopic dermatitis corresponds well with a decrease in the number of peripheral blood eosinophils Thus, induction of the expression of this gene is likely to correlate with the therapeutic effect.
- NOR-1 NOR-1
- NOR-1 (MINOR) is a nuclear receptor that is structurally a nuclear receptor, and its ligand-activator in vivo is unknown. If they are found, they can directly activate NOR-1 (MIN0R) in eosinophil cells and promote apoptosis. Therefore, it was considered that the ligand active substance was highly possible as an anti-allergic drug4, and a high-throughput system for ligand Starry Jung was constructed.
- the Mammalian Two Hybrid system was slightly modified to insert the ligand-binding region sequence of N0R-1 (MINOR) or the full-length gene (Fig. 4) into pBIND as shown in Fig. 3.
- MINOR ligand-binding region sequence of OR-1
- Fig. 4 full-length gene
- a protein in which the DNA binding region of OR-1 and GAL4 was fused in frame was expressed.
- NOR-1 unlike other subfamilies (and iS), it is presumed that the AF 1 region near the N-terminus is important for transcriptional activity, and the ligand binding region is also used in the Mammalian Hybrid system. Not only that, it was necessary to insert the full-length gene.
- NOR-1 (MINOR) is induced to be expressed in a state in which leukocytes such as atopic dermatitis peripheral blood are hyperactive, and as a result, apoptosis is likely to be induced in cells.
- Ligands present in vivo may be present at locations where nuclear receptors are highly expressed. Therefore, a low molecular fat-soluble mediator, which is expected to be produced under such conditions, was added to the Atsushi system as a candidate ligand, and evaluated for its potentiating effect on the activity of noreciferase.
- cyclopentenone structures such as prostaglandin A 2 , prosta glandin A, 15 (R) -15-methyl prostaglandin A 2 , 16-phenoxy tetranor prosta glandin A 2 , and 17-phenyl trinor prostaglandin A 2 It was found that prostaglandins having the function of enhancing the transcriptional activity of N0R-1 (MINOR) (Fig. 5, Tables 7 to 13).
- Nor1 GST-LBD was expressed and purified in E. coli.
- Biacore S51 it was possible to capture the binding of PGA1 and PGA2 to the Nor1 LBD under comparison with GST (Fig. 8).
- Anti-Fas antibody does not induce N or 1 despite slower response than anti-CD30 antibody but apoptosis occurs, suggesting a different eosinophil-specific apoptosis pathway. is there. These phenomena (induction of apoptosis and induction of N or 1 expression) were also observed when an eosinophil-specific cell line, AML14.3D10, was treated with an anti-CD30 antibody (Figs. 10 and 11). ).
- Promoting this eosinophil-specific pathway leading to cell death through enhancement of the function of N or 1 is not limited to asthma, but also to various allergies including atopic dermatitis examined by the present inventors. It is likely to lead to treatment of one disease.
- An example of a treatment strategy intended by the present inventors is shown in FIG.
- This surveillance provided a gene that is differentially expressed in eosinophils during the exacerbation and remission periods of patients with atopic dermatitis.
- the expression level of the allergic disease-related gene in the present invention can be easily known regardless of the type of allergen. Therefore, the pathology of allergic reactions can be comprehensively understood.
- the method for testing an allergic disease of the present invention can analyze the expression level of peripheral blood eosinophils as a sample, and thus has low invasiveness to patients. Higher throughput and lower cost of gene analysis technology are progressing year by year. Therefore, the method for detecting an allergic disease according to the present invention is expected to be an important diagnostic method at the bedside in the near future. In this sense, the diagnostic value of the method of the invention is high. Furthermore, the screening method of the present invention is carried out using, as an index, a gene function closely related to an increase or decrease in eosinophils, which is a typical clinical marker for atopic dermatitis. Therefore, compounds that can be found by this screening method are expected to be useful for controlling a wide variety of allergic diseases.
- the therapeutic drug for allergic diseases is useful as a drug having a completely new mechanism of action, that is, activation of NOR-1 and accompanying induction of eosinophil apoptosis.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003246102A AU2003246102A1 (en) | 2002-06-27 | 2003-06-27 | Method of examining allergic disease and drug for treating the same |
JP2004517315A JPWO2004003198A1 (ja) | 2002-06-27 | 2003-06-27 | アレルギー性疾患の検査方法、および治療のための薬剤 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002-188490 | 2002-06-27 | ||
JP2002188490 | 2002-06-27 |
Publications (1)
Publication Number | Publication Date |
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WO2004003198A1 true WO2004003198A1 (ja) | 2004-01-08 |
Family
ID=29996819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/008199 WO2004003198A1 (ja) | 2002-06-27 | 2003-06-27 | アレルギー性疾患の検査方法、および治療のための薬剤 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7115373B2 (ja) |
JP (1) | JPWO2004003198A1 (ja) |
AU (1) | AU2003246102A1 (ja) |
WO (1) | WO2004003198A1 (ja) |
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WO2009028891A3 (en) * | 2007-08-31 | 2009-04-30 | Hanall Pharmaceutical Co Ltd | 1,3,5-triazine-2,4,6-triamine compound or pharmaceutical acceptable salt thereof, and pharmaceutical composition comprising the same |
US8343961B2 (en) | 2009-03-31 | 2013-01-01 | Arqule, Inc. | Substituted heterocyclic compounds |
WO2015190504A1 (ja) * | 2014-06-10 | 2015-12-17 | 三菱瓦斯化学株式会社 | アルキリデンアミノグアニジン及びその塩、変性用組成物、タイヤ用変性ゴム、タイヤ用ゴム組成物並びにタイヤ |
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ES2457316T3 (es) * | 2007-03-19 | 2014-04-25 | Astrazeneca Ab | Compuestos 8-oxo-adenina 9 sustituidos como moduladores del receptor similares a toll (TLR7) |
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WO2008114819A1 (ja) * | 2007-03-20 | 2008-09-25 | Dainippon Sumitomo Pharma Co., Ltd. | 新規アデニン化合物 |
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EA201101650A1 (ru) | 2009-05-21 | 2012-07-30 | Астразенека Аб | Новые производные пиримидина и их применение в лечении злокачественных новообразований и последующих заболеваний |
DE102010045890A1 (de) * | 2010-09-17 | 2012-03-22 | Merck Patent Gmbh | 2,2'-Furoin-Derivte und deren Verwendung zur Hautaufhellung |
EP2651937B8 (en) | 2010-12-16 | 2016-07-13 | Sumitomo Dainippon Pharma Co., Ltd. | Imidazo[4,5-c]quinolin-1-yl derivative useful in therapy |
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WO2000077202A1 (en) * | 1999-06-15 | 2000-12-21 | Smithkline Beecham Plc | Novel compounds |
WO2001070254A1 (en) * | 2000-03-21 | 2001-09-27 | Smithkline Beecham P.L.C. | Use of human not1 and not1a orphan receptors |
WO2001087923A1 (en) * | 2000-05-12 | 2001-11-22 | Baylor College Of Medicine | Therapeutic approaches to diseases by suppression of the nurr subfamily of nuclear transcription factors |
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US6812339B1 (en) * | 2000-09-08 | 2004-11-02 | Applera Corporation | Polymorphisms in known genes associated with human disease, methods of detection and uses thereof |
JPWO2004005509A1 (ja) | 2002-07-02 | 2005-11-04 | 株式会社ジェノックス創薬研究所 | アレルギー性疾患の検査方法、および治療のための薬剤 |
-
2003
- 2003-06-27 US US10/608,863 patent/US7115373B2/en not_active Expired - Fee Related
- 2003-06-27 JP JP2004517315A patent/JPWO2004003198A1/ja active Pending
- 2003-06-27 AU AU2003246102A patent/AU2003246102A1/en not_active Abandoned
- 2003-06-27 WO PCT/JP2003/008199 patent/WO2004003198A1/ja active Application Filing
Patent Citations (3)
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WO2000077202A1 (en) * | 1999-06-15 | 2000-12-21 | Smithkline Beecham Plc | Novel compounds |
WO2001070254A1 (en) * | 2000-03-21 | 2001-09-27 | Smithkline Beecham P.L.C. | Use of human not1 and not1a orphan receptors |
WO2001087923A1 (en) * | 2000-05-12 | 2001-11-22 | Baylor College Of Medicine | Therapeutic approaches to diseases by suppression of the nurr subfamily of nuclear transcription factors |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009028891A3 (en) * | 2007-08-31 | 2009-04-30 | Hanall Pharmaceutical Co Ltd | 1,3,5-triazine-2,4,6-triamine compound or pharmaceutical acceptable salt thereof, and pharmaceutical composition comprising the same |
JP2010537974A (ja) * | 2007-08-31 | 2010-12-09 | ハナル バイオファーマ カンパニーリミテッド | 1,3,5−トリアジン−2,4,6−トリアミン化合物またはその薬学的に許容可能な塩と、それを含む薬学組成物 |
US8722674B2 (en) | 2007-08-31 | 2014-05-13 | Hanall Biopharma Co., Ltd. | 1,3,5-triazine-2,4,6-triamine compound or pharmaceutical acceptable salt thereof, and pharmaceutical composition comprising the same |
US8343961B2 (en) | 2009-03-31 | 2013-01-01 | Arqule, Inc. | Substituted heterocyclic compounds |
WO2015190504A1 (ja) * | 2014-06-10 | 2015-12-17 | 三菱瓦斯化学株式会社 | アルキリデンアミノグアニジン及びその塩、変性用組成物、タイヤ用変性ゴム、タイヤ用ゴム組成物並びにタイヤ |
JP5975369B2 (ja) * | 2014-06-10 | 2016-08-23 | 三菱瓦斯化学株式会社 | ゴム変性用組成物及びその製造方法、タイヤ用変性ゴム、タイヤ用ゴム組成物並びにタイヤ |
US10173973B2 (en) | 2014-06-10 | 2019-01-08 | Mitsubishi Gas Chemical Company, Inc. | Alkylidene aminoguanidine and salt thereof, modifying composition, modified rubber for tire, rubber composition for tire, and tire |
Also Published As
Publication number | Publication date |
---|---|
US7115373B2 (en) | 2006-10-03 |
AU2003246102A8 (en) | 2004-01-19 |
US20040214192A1 (en) | 2004-10-28 |
AU2003246102A1 (en) | 2004-01-19 |
JPWO2004003198A1 (ja) | 2005-10-27 |
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