WO2006038265A1 - 耳硬化症治療のための医薬組成物 - Google Patents
耳硬化症治療のための医薬組成物 Download PDFInfo
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- WO2006038265A1 WO2006038265A1 PCT/JP2004/014390 JP2004014390W WO2006038265A1 WO 2006038265 A1 WO2006038265 A1 WO 2006038265A1 JP 2004014390 W JP2004014390 W JP 2004014390W WO 2006038265 A1 WO2006038265 A1 WO 2006038265A1
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- Prior art keywords
- angiotensin
- otosclerosis
- activity
- receptor
- polymorphism
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Classifications
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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
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/16—Otologicals
-
- 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
- C12Q2600/156—Polymorphic or mutational markers
-
- 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
Definitions
- composition for the treatment of otosclerosis is provided.
- the present invention relates to a method for treating otosclerosis, a pharmaceutical thread composition for otosclerosis treatment, a method for its administration, and a diagnostic marker for otosclerosis.
- Otosclerosis is a degenerative disease in which abnormal spongy bone growth occurs in the middle ear, and the bottom of the stapes sticks. As a result, the stapes are prevented from vibrating in response to sound and progressive hearing loss occurs.
- the present invention was made for the purpose of providing a method for treating otosclerosis, a pharmaceutical thread and composition for otosclerosis treatment, a method for its administration, and a diagnostic marker for otosclerosis. .
- M235T polymorphism in the angiotensinogen gene and the onset of otosclerosis that have been found to be related to hypertension.
- This M235T polymorphism consists of a M235 allele that encodes wild-type angiotensin ⁇ ⁇ containing methionine as the 235th amino acid, and a T235 allele that encodes mutant angiotensin II containing threonine. And power.
- This T235 allele is thought to enhance the activity of the angiotensin II receptor signaling system by increasing the cytoplasmic concentration of angiotensinogen, and by increasing the tissue concentration of angiotensin II.
- the present inventor has revealed that the activity of angiotensin II receptor signaling system is enhanced when stimulated with IL 6 in primary bone cultured cells of otosclerosis patients. (Example 2).
- angiotensin II and Z or angiotensin ⁇ receptor an increase in the tissue concentration of angiotensin ⁇ can be suppressed, and angiotensin II receptor
- the activity of the signal transduction system can be returned to normal.
- Many pharmaceutical compositions effective in the treatment of hypertension have been found in accordance with such principles. Power These pharmaceutical compositions are considered to have an effect on otosclerosis as well.
- the pharmaceutical composition for the treatment of otosclerosis which is based on the present invention, contains an angiotensin II receptor signaling system activity reducing agent.
- the angiotensin II receptor signaling system activity reducing agent may comprise an angiotensin II activity reducing agent or an angiotensin II receptor activity reducing agent.
- angiotensin IV activity-reducing ability Angiotensin I inhibitor, angiotensin II inhibitor, angiotensin converting enzyme (Angiotensin Converting Enzyme) inhibitor, or angiotensinogen gene expression inhibitor Is preferred.
- angiotensin converting enzyme inhibitor is a group force that also includes ramipril, arasperil, captopril, quinapril, enalapril, trandolapril, imidapril, cilazapril, perindopril elpmine, temocapril, and their salt power It is preferable to include an agent.
- an angiotensin II receptor activity-reducing ability is preferably an angiotensin II receptor inhibitor or an angiotensin receptor gene expression inhibitor.
- an inhibitor selected from the group consisting of angiotensin ⁇ receptor inhibitory power salalaracin, oral sultan, telmisartan, palsartan, candesartan cilexetil, and salts thereof.
- the therapeutic method according to the present invention is characterized in that the activity of the angiotensin II receptor signaling system is reduced.
- angiotensin II and Z or angiotensin II receptor activity reducing agent may be administered.
- Saraco, low activity of angiotensin II Laxatives include activity-reducing agents selected from ramipril, alaspril, captopril, quinapril, enalapril, trandolapril, imidapril, cilazapril, perindopril elpmine, temocapril, and their salts.
- angiotensin II receptor activity-reducing ability may be included.
- the activity-reducing agent selected from the group consisting of salaracin, oral sultan, telmisartan, valsartan, candesartan cilexetil, and salts thereof may be included.
- the method for administering a pharmaceutical composition for the treatment of otosclerosis comprising an angiotensin II receptor signaling system activity reducing agent comprises the M235T polymorphism of the angiotensinogen gene It is characterized in that it is determined based on the genotypes of alleles.
- the method for selecting a pharmaceutical composition for the treatment of otosclerosis comprising an angiotensin II receptor signaling system activity reducing agent comprises the M235T polymorphism of the angiotensinogen gene
- the pharmaceutical composition is selected based on the genotypes of alleles.
- a method for determining the dosage of a pharmaceutical composition for the treatment of otosclerosis comprising an angiotensin II and / or an angiotensin II receptor active depressant according to the present invention is an angiotensinogen.
- the dosage of the pharmaceutical composition is determined based on the genotype of the allele in the M235T polymorphism of the gene.
- the diagnostic marker for otosclerosis contains genetic material for determining the genotype of the allele in the M23 5T polymorphism of the angiotensinogen gene.
- genetic material refers to a substance that occurs in all stages from the gene-bearing DNA to the expression of the protein, which is the final product of the gene, such as DNA, hnRNA, mRNA, polypeptide, protein, etc. Point to. Therefore, this genetic material may be a peptide having the 235th amino acid sequence of angiotensin II or a DNA having a base pair in the M235T polymorphism of the angiotensinogen gene.
- the estimation method for estimating the possibility of developing otosclerosis according to the present invention is performed by determining the genotype of the allele in the M235T polymorphism of the angiotensinogen gene in healthy individuals.
- the estimation method for estimating the cause of otosclerosis according to the present invention is performed by determining the genotype of the allele in the M235T polymorphism of the angiotensinogen gene in otosclerosis patients.
- the otosclerosis diagnostic kit useful for the present invention includes a PCR primer for detecting a base pair in the M235T polymorphism of the angiotensinogen gene.
- FIG. 1 is a view showing the base sequence of a DNA fragment amplified by PCR performed in Example 1 of the present invention to examine the genotype of an allele in the M235T polymorphism. Primers used for PCR are underlined. (T / C) is a base showing the M235T polymorphism.
- FIG. 2 shows the activity of angiotensin II receptor signal transduction system when angiotensin II is administered using primary bone cultured cells in Example 2 of the present invention. It is a figure which shows the result measured using 6 as a parameter
- the genetic material may be a peptide having the 235th amino acid sequence of angiotensin II, or DNA having a base pair for the M235T polymorphism in the angiotensinogen gene.
- the marker is a peptide
- a monoclonal antibody that specifically recognizes only one of the M235T polymorphisms can be used to identify the peptide having each genotype.
- a monoclonal antibody having such specificity can be prepared by a conventional method using an oligopeptide containing either T235 or M235 at the 235th amino acid of angiotensin II. If the marker is DNA, genomic DNA is extracted from human cells to be examined, and the base sequence encoding the amino acid of M235T is examined. In some cases, use the power of PCR or RELP (restriction enzyme length polymorphism).
- the genotype of the M235T polymorphism of the angiotensinogen gene was determined.
- an otosclerosis diagnostic kit containing a primer for PCR is provided, it will be possible to easily test and diagnose.
- the M235T polymorphism in the angiotensinogen gene has a significant bias between otosclerosis patients and healthy individuals. Increased activity of the otensin II receptor signaling system is thought to have caused otosclerosis. Therefore, for the treatment of otosclerosis, the activity of this signal transmission system is preferably suppressed to a normal level. In this case, in order to specifically inhibit the angiotensin ⁇ receptor signaling system, it is preferable to reduce the activity of the ligand angiotensin II and the activity of the receptor angiotensin II receptor.
- the cause of otosclerosis is the enhancement of the angiotensin II receptor signaling system.
- a pharmaceutical composition that suppresses the activity of this signal transduction system can be used.
- angiotensin II for example, an angiotensin I inhibitor that binds to angiotensin I and inhibits conversion to angiotensin II
- angiotensin II binds to angiotensin II
- Angiotensin II inhibitor that inhibits binding to the otensin II receptor Angiotensin Converting Enzyme inhibitor that inhibits the angiotensin II-converting enzyme to angiotensin II
- An angiotensin II activity-reducing agent including an angiotensinogen gene expression inhibitor that suppresses angiotensinogen gene expression, may be administered to otosclerosis patients.
- the activity reducing agent to be used is not limited to these.
- angiotensin I inhibitors include compounds that bind to angiotensin I and anti-angiotensin I antibodies.
- Angiotensin II inhibitors include compounds that bind to angiotensin II, anti-angiotensin II antibodies, mutant angiotensin II receptors that bind to angiotensin II but cannot transmit signals (e.g., angiotensin II).
- Such as shortened angiotensin II receptor which also has the ability of the extra-membrane domain of the II receptor) It is done.
- angiotensin converting enzyme inhibitor examples include ramipril, alaspril, captopril, quinapril, enalapril, trandolapril, imidapril, cilazapril, perindopril elpmine, temocapril, and salts thereof.
- antisense RNA or RNAi for the angiotensinogen gene is preferable in order to specifically recognize the expression of the angiotensinogen gene.
- an angiotensin II receptor activity-reducing agent containing an angiotensin II receptor inhibitor or an angiotensin receptor gene expression inhibitor is used. Although it may be administered to a sclerosis patient, the method for reducing the activity and the activity reducing agent to be administered are not limited to these.
- Angiotensin II receptor inhibitor is a compound that binds to angiotensin II receptor and inhibits angiotensin II receptor activity, or antagonizes angiotensin II receptor and angiotensin II receptor.
- an angiotensin II receptor antagonist that inhibits the activity of.
- powers including, but not limited to, salaracin, oral sultan, telmisartan, valsartan, candesartan cilexetil, and salts thereof.
- an angiotensin II receptor antagonist a force signal that strongly or temporarily binds to angiotensin II receptor is not transmitted, and mutant angiotensin II is preferable.
- antisense RNA or RNAi against the angiotensin receptor gene is preferred to specifically suppress the expression of the angiotensin receptor gene! /.
- the content of the pharmaceutical composition for the treatment of otosclerosis in the preparation can vary between 1 and 90% by weight.
- liquids such as syrups it is preferable to contain 1 to 30% by weight of the active ingredient.
- Formulation of a pharmaceutical composition for the treatment of otosclerosis involves the use of excipients (sugars such as lactose, sucrose, glucose and man-tol, starch such as potato, wheat and corn, calcium carbonate, , Inorganic substances such as calcium sulfate and sodium bicarbonate, crystalline cellulose, etc.), binders (starch paste, gum arabic, gelatin, sodium alginate, methyl cellulose, ethyl cellulose, polyvinyl pyrrolidone, polyvinyl alcohol, hydroxypropylene Cellulose, carmellose, etc.), lubricant (magnesium stearate, talc, hydrogenated vegetable oil, macrogol, silicone oil), disintegrant (starch, agar, gelatin powder, crystalline cellulose, CMC 'Na, CMC' Ca, Calcium carbonate, sodium bicarbonate, sodium alginate, etc.), flavoring agents (lactose, sucrose, glucose, mannitol,
- the pharmaceutical composition for the treatment of otosclerosis as described above may be orally administered in the form of tablets, capsules, granules, powders, syrups, etc., or injections, suppositories. And may be administered parenterally by intraperitoneal, intravenous, intraarterial, intramuscular, subcutaneous injection, direct injection into the ear, or intratympanic injection. It can also be applied in liquid form and applied to the skin and mucous membranes.
- the above-described pharmaceutical yarn for treating otosclerosis and the dosage thereof may be determined according to the genotype of the angiotensinogen gene M235T polymorphism. As shown in Example 1, the T235 mutation shows incomplete dominance, with a greater proportion of homozygotes having more heterozygotes than normal in otosclerosis patients. Therefore, for example, a pharmaceutical composition having a more potent effect is selected and administered to a homozygous otosclerosis patient than a heterozygous otosclerosis patient with a genotype in the M235T polymorphism. More efficient treatment can be achieved by administering a pharmaceutical composition.
- the genotypes of alleles and the frequency of each gene type were examined.
- Judgment of otosclerosis is based on the following findings: 1. Progressive hearing loss or mixed hearing loss associated with normal eardrum 2. Loss of stapes reflex 3. Abnormal findings of vestibular window circumference in CT image Therefore, the diagnosis was confirmed based on the stapes findings during surgery and loss of mobility of the stapes.
- Genomic DNA was extracted from the peripheral blood cells of each person, and PCR was performed using the following primers. As conditions, genomic DNA was treated at 94 ° C for 3 minutes, followed by 38 cycles of 94 ° C for 15 seconds, 60 ° C for 45 seconds to 72 ° C for 45 seconds.
- S primer 5,-CCGTTTGTGCAGGGCCTGGCTCTCT-3, (SEQ ID NO: 1)
- AS primer 5,-CAGGGTGCTGTCCACACTGGacCCC -3
- SEQ ID NO: 2 S primer: 5,-CCGTTTGTGCAGGGCCTGGCTCTCT-3, (SEQ ID NO: 1)
- the AS primer Since the AS primer has 2 bases (base sequence shown in lower case in the above sequence) that mismatch with genomic DNA, if the amplified DNA has the T235 allele, a restriction enzyme site Tthllll that does not exist in genomic DNA is generated ( Hum Mol Genet, 1993, Vol. 2, No. 5, 609-610). Therefore, the amplified DNA fragment (shown in Figure 1 shows the base sequences of M235 allele ⁇ SEQ ID NO: 3> and T235 allele SEQ ID NO: 4>) with restriction enzyme Tthl 1 II and electrophoresed. The M235 allele is a single band of 165 bp, and the T235 allele is detected in two bands of 141 bp and 24 bp. Table 1 shows the results of examining the genotype of each person.
- Bone cells were primarily cultured from the patients and healthy subjects targeted in Example 1, and the activity of the angiotensin receptor signaling system was examined.
- Bone fragments were cultured at 37 ° C and 5% CO using D MEM containing 4.5% glucose, 12.5 mg / rencomycin, 30% FCS.
- the present invention relates to a method for treating otosclerosis, a pharmaceutical thread composition for the treatment of otosclerosis, a method for its administration, a method for determining its method of administration, a method of determining its dose, and the possibility of developing otosclerosis. It is possible to provide an estimation method for estimating sex, an estimation method for estimating the cause of otosclerosis, and a diagnostic tool for otosclerosis.
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