EP1658312A1 - Modulatoren der kaliumkanäle twik-1, task-1, girk1, sk2 oder pcn1 zur behandlung von arrhythmien, koronarer herzkrankheiten oder bluthochdruck - Google Patents
Modulatoren der kaliumkanäle twik-1, task-1, girk1, sk2 oder pcn1 zur behandlung von arrhythmien, koronarer herzkrankheiten oder bluthochdruckInfo
- Publication number
- EP1658312A1 EP1658312A1 EP04740690A EP04740690A EP1658312A1 EP 1658312 A1 EP1658312 A1 EP 1658312A1 EP 04740690 A EP04740690 A EP 04740690A EP 04740690 A EP04740690 A EP 04740690A EP 1658312 A1 EP1658312 A1 EP 1658312A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- modulators
- arrhythmias
- task
- twik
- coronary heart
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 206010003119 arrhythmia Diseases 0.000 title claims abstract description 34
- 230000006793 arrhythmia Effects 0.000 title claims abstract description 26
- 206010020772 Hypertension Diseases 0.000 title claims abstract description 19
- 208000029078 coronary artery disease Diseases 0.000 title claims abstract description 18
- 102000004257 Potassium Channel Human genes 0.000 title claims description 23
- 108020001213 potassium channel Proteins 0.000 title claims description 23
- 101150025785 pcn1 gene Proteins 0.000 title abstract 2
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 238000011321 prophylaxis Methods 0.000 claims abstract description 16
- 101001049841 Homo sapiens Potassium channel subfamily K member 1 Proteins 0.000 claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 108090000623 proteins and genes Proteins 0.000 claims description 23
- 210000005246 left atrium Anatomy 0.000 claims description 10
- 210000005240 left ventricle Anatomy 0.000 claims description 10
- 102000004169 proteins and genes Human genes 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000008194 pharmaceutical composition Substances 0.000 claims description 3
- 102100033063 G protein-activated inward rectifier potassium channel 1 Human genes 0.000 abstract 1
- 101000944266 Homo sapiens G protein-activated inward rectifier potassium channel 1 Proteins 0.000 abstract 1
- -1 TASK-1 Proteins 0.000 abstract 1
- 108091006146 Channels Proteins 0.000 description 11
- 230000014509 gene expression Effects 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 210000002837 heart atrium Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- 239000000523 sample Substances 0.000 description 6
- 230000003288 anthiarrhythmic effect Effects 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000036982 action potential Effects 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 3
- 239000003416 antiarrhythmic agent Substances 0.000 description 3
- 230000037007 arousal Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 108020004999 messenger RNA Proteins 0.000 description 3
- 238000003753 real-time PCR Methods 0.000 description 3
- 230000002336 repolarization Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- ZBMZVLHSJCTVON-UHFFFAOYSA-N sotalol Chemical compound CC(C)NCC(O)C1=CC=C(NS(C)(=O)=O)C=C1 ZBMZVLHSJCTVON-UHFFFAOYSA-N 0.000 description 3
- 229960002370 sotalol Drugs 0.000 description 3
- 102000007260 Deoxyribonuclease I Human genes 0.000 description 2
- 108010008532 Deoxyribonuclease I Proteins 0.000 description 2
- 241000282412 Homo Species 0.000 description 2
- 101001047090 Homo sapiens Potassium voltage-gated channel subfamily H member 2 Proteins 0.000 description 2
- 102000004310 Ion Channels Human genes 0.000 description 2
- 108090000862 Ion Channels Proteins 0.000 description 2
- 102100022807 Potassium voltage-gated channel subfamily H member 2 Human genes 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- IYIKLHRQXLHMJQ-UHFFFAOYSA-N amiodarone Chemical compound CCCCC=1OC2=CC=CC=C2C=1C(=O)C1=CC(I)=C(OCCN(CC)CC)C(I)=C1 IYIKLHRQXLHMJQ-UHFFFAOYSA-N 0.000 description 2
- 229960005260 amiodarone Drugs 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000037396 body weight Effects 0.000 description 2
- 238000010804 cDNA synthesis Methods 0.000 description 2
- 210000000170 cell membrane Anatomy 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002299 complementary DNA Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000019622 heart disease Diseases 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000028161 membrane depolarization Effects 0.000 description 2
- 238000010369 molecular cloning Methods 0.000 description 2
- 239000003068 molecular probe Substances 0.000 description 2
- 230000002107 myocardial effect Effects 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 150000007523 nucleic acids Chemical class 0.000 description 2
- 239000003450 potassium channel blocker Substances 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 210000005245 right atrium Anatomy 0.000 description 2
- IDELNEDBPWKHGK-UHFFFAOYSA-N thiobutabarbital Chemical compound CCC(C)C1(CC)C(=O)NC(=S)NC1=O IDELNEDBPWKHGK-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 201000001320 Atherosclerosis Diseases 0.000 description 1
- 108020004635 Complementary DNA Proteins 0.000 description 1
- 108020004414 DNA Proteins 0.000 description 1
- 102000017914 EDNRA Human genes 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 108010090549 Endothelin A Receptor Proteins 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 108091093037 Peptide nucleic acid Proteins 0.000 description 1
- 229940127315 Potassium Channel Openers Drugs 0.000 description 1
- 241000700159 Rattus Species 0.000 description 1
- 241000700157 Rattus norvegicus Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 210000001744 T-lymphocyte Anatomy 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 102000012740 beta Adrenergic Receptors Human genes 0.000 description 1
- 108010079452 beta Adrenergic Receptors Proteins 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010805 cDNA synthesis kit Methods 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 210000004413 cardiac myocyte Anatomy 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000000423 cell based assay Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 210000004978 chinese hamster ovary cell Anatomy 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002999 depolarising effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009274 differential gene expression Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000008298 dragée Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 230000002102 hyperpolarization Effects 0.000 description 1
- 208000027866 inflammatory disease Diseases 0.000 description 1
- 231100000566 intoxication Toxicity 0.000 description 1
- 230000035987 intoxication Effects 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 229940126601 medicinal product Drugs 0.000 description 1
- 238000002779 membrane potential assay Methods 0.000 description 1
- 238000012775 microarray technology Methods 0.000 description 1
- 210000004165 myocardium Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 239000000902 placebo Substances 0.000 description 1
- 229940068196 placebo Drugs 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001536 pro-arrhythmogenic effect Effects 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000036279 refractory period Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000010410 reperfusion Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 210000001013 sinoatrial node Anatomy 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 229940026152 thiobutabarbital Drugs 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 1
- 238000001262 western blot Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/06—Antiarrhythmics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the invention relates to the use of potassium channel modulators for the manufacture of a medicament for the treatment of and / or preventive heart disease as well as high blood pressure or a combination of the diseases mentioned.
- the cells of the sinus node in the right atrium of the heart have the function of a physiological pacemaker, since electrical excitation originates there at regular intervals.
- a change in membrane potential which is determined by the concentration of different ions on both sides of a cell membrane, is responsible for the excitation conduction (Na + , K + ⁇ md Ca 2+ ).
- These ions pass through the cell membrane through ion-selective channels that consist of several subunits and together form a pore.
- the heart muscle cell runs through an action potential, which is composed of phases 0-3 and in which all three types of ion channels mentioned above are involved.
- the action begins with a rapid depolarization (phase 0), in which primarily Na + channels are involved, followed by a transient, incomplete repolarization (phase 1) into the long-lasting one
- Phase 2 Plateau phase (phase 2) passes and in which mainly Ca 2+ channels are involved.
- Phase 3 represents repolarization and is therefore responsible for restoring sleep.
- the KN outflow required for repolarization is mediated through potassium channels.
- the membrane is protected from a further depolarizing stimulus, it is refractory (1).
- Arrhythmias either lead to disturbances in the formation of arousal, the conduction of the arousal or a combination of both. This can be caused by ischemia, inflammatory diseases of the heart muscle, but also intoxications or vegetative influences. Substances and processes that affect arousal formation or transmission are used therapeutically to treat arrhythmias. Substances that repolarize
- Delaying the K + current and thereby lengthening the action potential duration and refractory period belong to the so-called class HI antiarrhythmics, of which A iodarone and Sotalol are currently approved in Germany (1).
- Sotalol in addition to blocking various K + channels (e.g. HERG), also has antagonistic properties for beta-adrenergic receptors, while amiodarone, in addition to HERG, also blocks the L-type Ca 2+ channel and Na + channel (1), ( 2).
- K + channels e.g. HERG
- amiodarone in addition to HERG, also blocks the L-type Ca 2+ channel and Na + channel (1), ( 2).
- the class ÜI potassium channel blockers have a considerable pro-arrhythmic potential, which is attributed to the simultaneous influence on the potassium channels in the ventricle and limits the clinical use.
- the identification of potassium channels, which are preferably expressed in the atrium, as possible antiarrhythmic targets is of particular importance, since this could reduce the side effects, which can even lead to fatal rabbit fibrillation (3).
- potassium channel blockers such as sotalol and amiodarone
- anti-arrhythmic effects of potassium channel openers e.g. B. for the ATP-dependent potassium channel (4).
- genes were identified using Affymetrix microarray technology, which are differentially expressed in the human heart between the left atrium and left ventricle (see FIG. 1).
- the differential expression of selected genes was verified using real-time PCR (TaqMan). It was shown that in all 6 patients examined the potassium channels TWIK-1 (5), TASK-1 (6), GIRKl (7), SK2 (8) and PCNl (9) were expressed much more strongly in the atrium than in the ventricle ( see Fig. 3).
- the present invention therefore relates to the use of modulators of the aforementioned
- Potassium channels for the manufacture of a medicament for the treatment and / or prophylaxis of the abovementioned diseases are provided.
- Potassium channel modulators in the sense of the present disclosure are substances which extend or shorten the opening time of the said potassium channels.
- modulators are all substances that change the biological
- modulators are nucleic acids including “locked nucleic acids”, “peptide nucleic acids” and “Spiegelmere”, proteins including antibodies and low molecular weight substances, very particularly preferred modulators are low molecular weight substances.
- the invention relates to the use of modulators of the potassium channels TWIK-1, TASK-1,
- GIRKl GIRKl
- SK2 or PCNl for the manufacture of a medicament for the treatment and / or prophylaxis of cardiac arrhythmias (arrhythmias), coronary heart diseases or high blood pressure.
- the invention relates to the use of modulators of the potassium channels TWIK-1, TASK-1, GIRKl, SK2 or PCNl with an IC 50 of ⁇ 1 ⁇ M, particularly preferably of ⁇ 100 nM for the manufacture of a medicament for the treatment and / or prophylaxis of
- Rhythm disorders arrhythmias
- coronary heart disease or high blood pressure.
- Another object of the invention is a method for screening test compounds for the identification of modulators of the potassium channels TWIK-1, TASK-1, GIRKl, SK2 or PCNl, which are suitable for the manufacture of a medicament for the treatment and / or prophylaxis of cardiac arrhythmias (arrhythmias), coronary artery disease or high blood pressure.
- the invention also relates to a pharmaceutical composition containing one or more modulators of the potassium channels TWK-1, TASK-1, GIRKl, SK2 or PCNl for the treatment and / or prophylaxis of arrhythmias (arrhythmias), coronary heart diseases or high blood pressure.
- the subject of the invention is also the use of modulators of the potassium channels TWIK-1, TASK-1, GIRKl, SK2 or PCNl for the regulation of the activity of the corresponding
- Potassium channels in a living being including humans, for the treatment and / or prophylaxis of heart rhythm disorders (arrhythmias), coronary heart disease or high blood pressure.
- the invention also relates to modulators of the potassium channels TWIK-1, TASK-1, GIRKl, SK2 or PCNl for the treatment and / or prophylaxis of cardiac arrhythmias (arrhythmias), coronary
- modulators of gene products which are differentially expressed in the human heart between the left atrium and left ventricle, for the manufacture of a medicament for the treatment of arrhythmias, coronary heart diseases, high blood pressure and the consequences of atherosclerosis.
- modulators of gene products which are differentially expressed in the human heart between the left atrium and left ventricle, for the manufacture of a medicament for the treatment of arrhythmias, coronary heart diseases, high blood pressure and the consequences of atherosclerosis.
- Enhanced expression in the ventricle may also be preferred (e.g. for the endothelin A receptor), the term differential gene expression is used here.
- Another object of the invention is a method for screening test compounds for the identification of modulators of gene products which are differentially expressed in the human heart between the left atrium and left ventricle, which are suitable for the
- the invention also relates to a pharmaceutical composition, containing a modulator or modulators of gene products which are differentially expressed in the human heart between the left atrium and left ventricle, for treatment and / or
- Prophylaxis of arrhythmias, coronary artery disease or high blood pressure furthermore relates to the use of modulators of gene products which are differentially expressed in the human heart between the left atrium and left ventricle for regulating the activity of the corresponding gene products in a living being, including humans, for the treatment and / or prophylaxis of cardiac arrhythmias (arrhythmias). , coronary artery disease or high blood pressure.
- the invention also relates to modulators of gene products which are differentially expressed in the human heart between the left atrium and left ventricle, for the treatment and / or prophylaxis of arrhythmias (arrhythmias), coronary heart diseases or high blood pressure.
- Substances that have a modulating effect on the activity of the channels mentioned can be identified using the assay described below (screening).
- the anti-arrhythmic effect is tested in vivo using the animal experiment described below.
- Figure 1 Tabularly listed genes that were found to be differentially expressed between the atrium and ventricle in all 6 patients examined.
- Figure 2 The Genbank Accession numbers of the genes verified by TaqMan-PCR and the primer / probe sequences used for this are listed in a table.
- FIG. 3 The relative mRNA expression of the potassium channels TWIK-1, TASK-1 is shown.
- FIG. 4 The relative protein expression of the potassium channel TASK-1 in human hearts is shown as the mean of all 6 patients, (left atrium [black] and left ventricle [white]. Examples
- Example 1 Identification of differentially expressed genes between human ventricle and atrium
- RNA from this was isolated after homogenization of the tissues using RNaesy columns (from Qiagen) according to the instructions.
- the description of each 10 ⁇ g total RNA in cDNA, its subsequent linear amplification and the hybridization of the biotinylated cRNA on human HG-U133A arrays was carried out according to the “Affymetrix User Guide” using Superscript-II (Gibco) and the “ High yield cRNA labeling kits (from Enzo).
- the HG-U133A array basically allows the simultaneous mR A analysis of approx. 22,600 human genes.
- the arrays were evaluated using the software MAS 5.0 (Affymetrix) and Gene Spring 5.0 (Silicon Genetics). 1 summarizes the genes which were differentially expressed between the atrium and the ventricle in all 6 patients examined. The quotient of the normalized expression from the atrium and ventricle is given, in each case as
- the differential expression of the potassium channels TWIK-1, TASK-1, GIRKl, SK2 and PCNl found by means of an array between the atrium and ventricle is verified by quantifying the mRNA in a real-time polymerase chain reaction (10).
- the total RNA is isolated from the human myocardial samples as described above and 1 ⁇ g of each is reacted with 1 unit DNase I (Gibco) for 15 min at room temperature to remove contaminations of genomic DNA.
- the DNase I is activated by adding 1 ⁇ l EDTA (25 inM) and then heating to 65 ° C. (10 min).
- the cDNA synthesis is then carried out in the same reaction mixture in accordance with the instructions for the "SUPERSCRIPT- ⁇ RT cDNA synthesis kit" (from Gibco) and the reaction volume is diluted with distilled water
- PCR For the PCR, 7.5 ⁇ l of the mixture of primer and probe and 12.5 ⁇ l of TaqMan reaction solution [Universal Master Mix (from Applied Biosytems]) are added to 5 ⁇ l of the diluted cDNA solution, and the final concentration of the primers is 300 nM in each case that of the probe 150 nM.
- the sequences of the primers and the Geribank accession numbers of the genes analyzed are given in FIG.
- Suitable primer and probe sequences were identified with the program Primer Express 5.0 (Applied Biosystems), the PCR is carried out on an ABI Prism SDS-7700 device (Applied Biosystems) according to the manufacturer's instructions.
- the so-called Ct value is recorded, which is obtained for the gene in question in the tissue examined. This corresponds to the cycle in which the fluorescence intensity of the released probe is approx. 10 standard deviations above the background signal. The lower the Ct value, the earlier the reproduction begins, ie the more mRNA is contained in the original sample.
- the expression of a so-called “household gene” is also analyzed in all examined tissues. This should be expressed approximately equally strongly in all tissues.
- a uniform beta was used for the atrium and ventricles
- the dCt value is calculated for each gene and each tissue for the graphical representation of the relative m-RNA expression
- the dCt value is the difference between the Ct value of the examined potassium channel and the Ct value of the household gene
- the protein expression was analyzed using a commercially available antibody (from Santa Cruz). For this, small pieces of tissue (approx. 50 mg) were homogenized in 1 X PBS (with 1% Triton) and after centrifugation and concentration determination
- Potassium channel modulators are identified in a cellular assay in which CHO cells recombinantly express the respective ion channel and using the potential-sensitive dye Dye B from the "FLEPR membrane potential assay kit" (Molecular Probes).
- a depolarization of the cells by a chemical Substance leads to an increased absorption of the dye "Dye B” and thus to an increased intracellular fluorescence intensity.
- Hyperpolarization of the cell by a chemical substance leads to a decrease in the dye concentration in the cell and thus also to a decrease in the fluorescence intensity, since the quantum yield of Dye B in aqueous solution is lower.
- Confluent cells are used for the measurement and, after removal of the medium, are loaded with the dye Dye B in accordance with the instructions of the kit manufacturer (Molecular Probes) at room temperature.
- the fluorescence measurement is also carried out at room temperature in a fluobox (from Tecan) with an excitation wavelength of 520 nm and an absorption wavelength of 575 nm, as described for example in (11).
- Example 3 Testing the in vivo effects of potassium channel modulators
- the potassium channel modulators can be converted in a known manner into the customary formulations, such as tablets, dragées, pills, granules, aerosols, syrups, emulsions, suspensions and solutions, using inert, non-toxic, pharmaceutically suitable excipients or solvents.
- the therapeutically active compound should in each case be present in a concentration of 0.5 to 90% by weight of the total mixture, i.e. in amounts sufficient to achieve the dosage range indicated.
- the formulations are prepared, for example, by stretching the active ingredients with solvents and / or carriers, optionally using emulsifiers and / or dispersants, e.g. if water is used as the diluent, organic solvents can optionally be used as auxiliary solvents.
- the application is carried out in the usual way, preferably orally, transdermally, intravenously or parenterally, in particular orally or intravenously. However, it can also be done by inhalation through the mouth or nose, for example with the aid of a spray, or topically via the skin.
- a K (ATP) Channel opener inhibited myocardial reperfusion action potential shortening and arrhythmias.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Biology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Cardiology (AREA)
- Pharmacology & Pharmacy (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Immunology (AREA)
- Toxicology (AREA)
- Zoology (AREA)
- Gastroenterology & Hepatology (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- Genetics & Genomics (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10332685A DE10332685A1 (de) | 2003-07-18 | 2003-07-18 | Vorhof-selektiv exprimierte Kaliumkanäle |
| PCT/EP2004/007364 WO2005016965A1 (de) | 2003-07-18 | 2004-07-06 | Modulatoren der kaliumkanäle twik-1, task-1, girk1, sk2 oder pcn1 zur behandlung von arrhythmien, koronarer herzkrankheiten oder bluthochdruck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1658312A1 true EP1658312A1 (de) | 2006-05-24 |
Family
ID=34071756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04740690A Withdrawn EP1658312A1 (de) | 2003-07-18 | 2004-07-06 | Modulatoren der kaliumkanäle twik-1, task-1, girk1, sk2 oder pcn1 zur behandlung von arrhythmien, koronarer herzkrankheiten oder bluthochdruck |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20060183665A1 (de) |
| EP (1) | EP1658312A1 (de) |
| DE (1) | DE10332685A1 (de) |
| WO (1) | WO2005016965A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8097650B2 (en) | 2005-07-27 | 2012-01-17 | The Trustees Of Columbia University In The City Of New York | Method of treating a condition associated with phosphorylation of TASK-1 |
| WO2008013988A2 (en) * | 2006-07-27 | 2008-01-31 | The Trustees Of Columbia University In The City Of New York | Method of treating a condition associated with phosphorylation of task-1 |
| MX2014002968A (es) | 2011-09-12 | 2014-07-09 | Sanofi Sa | 4,5,6,7 - tetrahidro - 1h - pirazolo [4,3 -c] piridinas sustituidas con indanilo, su uso como medicamento, y preparaciones farmaceuticas que las comprenden. |
| WO2013037389A1 (en) | 2011-09-12 | 2013-03-21 | Sanofi | Indanyl-substituted 4,5,6,7-tetrahydro-1h-pyrazolo[4,3-c]pyridines, their use as medicament, and pharmaceutical preparations comprising them |
| BR112014006180A2 (pt) | 2011-09-16 | 2017-04-11 | Sanofi Sa | 4, 5, 6, 7-tetraidro-1h-pirazol [4, 3-c] piridinas substituídas, seu uso como medicamento e preparações farmacêuticas que compreendem as mesmas |
| AU2011376721B2 (en) | 2011-09-16 | 2017-06-08 | Sanofi | Substituted 4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridines, their use as medicament, and pharmaceutical preparations comprising them |
| JP6126135B2 (ja) | 2012-02-03 | 2017-05-10 | サノフイ | 縮合ピロールカルボキサミド及びその医薬としてのその使用 |
| US20220071951A1 (en) * | 2018-12-28 | 2022-03-10 | Osaka University | Therapeutic agent for inherited bradyarrhythmia |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5492825A (en) * | 1993-08-06 | 1996-02-20 | The Regents Of The University Of California | Mammalian inward rectifier potassium channel cDNA, IRK1, corresponding vectors, and transformed cells |
| FR2744730B1 (fr) * | 1996-02-08 | 1998-04-17 | Centre Nat Rech Scient | Nouvelle famille de canaux potassium de mammifere, leur clonage et leur utilisation notamment pour le criblage de drogues |
| US20020094558A1 (en) * | 1996-11-15 | 2002-07-18 | Centre National De La Recherche Scientifique-Cnrs | Family of mammalian potassium channels, their cloning and their use, especially for the screening of drugs |
| FR2775688B1 (fr) * | 1998-03-05 | 2002-04-05 | Centre Nat Rech Scient | Nouvelle famille de canaux potassium de mammiferes mecanosensibles et actives par les acides gras polyinsatures et leur utilisation notamment pour le criblage de drogues |
| US20030124568A1 (en) * | 2000-02-18 | 2003-07-03 | Daniela Spielvogel | Novel central nervous protein, that modulates k+ flows |
| AU2003293124A1 (en) * | 2002-11-27 | 2004-06-23 | Artesian Therapeutics, Inc. | Heart failure gene determination and therapeutic screening |
-
2003
- 2003-07-18 DE DE10332685A patent/DE10332685A1/de not_active Withdrawn
-
2004
- 2004-07-06 EP EP04740690A patent/EP1658312A1/de not_active Withdrawn
- 2004-07-06 WO PCT/EP2004/007364 patent/WO2005016965A1/de not_active Ceased
- 2004-07-06 US US10/565,185 patent/US20060183665A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005016965A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10332685A1 (de) | 2005-02-17 |
| WO2005016965A1 (de) | 2005-02-24 |
| US20060183665A1 (en) | 2006-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69331761T2 (de) | Arzneimittel, die den durch ampa rezeptoren vermittelten synaptischen respons erhöhen | |
| Olpe et al. | The actions of orally active GABAB receptor antagonists on GABAergic transmission in vivo and in vitro | |
| DE69705312T2 (de) | N6-heterocyclisch-substituierte adenosin-derivate | |
| DE69530933T2 (de) | Verwendung von 5-(tetradecyloxy)-2-furan carbonsäure für die behandlung von alzheimer krankheit oder psychosis | |
| EP0590551B1 (de) | Neue therapeutische Verwendungen von Phthalazinon-Derivaten | |
| Chan et al. | Facilitation of lumbar monosynaptic reflexes by locus coeruleus in the rat | |
| Braga et al. | Lamotrigine reduces spontaneous and evoked GABAA receptor-mediated synaptic transmission in the basolateral amygdala: implications for its effects in seizure and affective disorders: lamotrigine and inhibition in the amygdala | |
| DE10138569A1 (de) | Regulation des APJ-Rezeptors | |
| Vakhitova et al. | A study of the mechanism of the antiarrhythmic action of Allapinin | |
| Malloy et al. | Pharmacological identification of cholinergic receptor subtypes on Drosophila melanogaster larval heart | |
| EP1658312A1 (de) | Modulatoren der kaliumkanäle twik-1, task-1, girk1, sk2 oder pcn1 zur behandlung von arrhythmien, koronarer herzkrankheiten oder bluthochdruck | |
| DE10156249A1 (de) | Regulation der cGMP-spezifischen Phosphodiesterase 9A | |
| DE69007739T2 (de) | Polypeptide verwertbar als Kalziumkanälen-Blocker. | |
| DE69930610T2 (de) | Kaliumkanalprotein | |
| DE69932807T2 (de) | Familie von mechano-empfindlichen kaliumkanälen bei säugetieren, die durch polyungesättigte fettsäuren aktiviert werden und deren verwendungen | |
| DE60221104T2 (de) | Substituierte diarylharnstoffe als stimulatoren der fas-vermittelten apoptose | |
| Mooney et al. | Effects of angiotensin II on visual neurons in the superficial laminae of the hamster's superior colliculus | |
| DE69919789T2 (de) | Loratadin zur Verwendung als Antiarrhythmikum | |
| Mendelsohn et al. | Relation of intracellular K'and steroidogenesis in isolated adrenal zona glomerulosa and fasciculata cells zyxwvutsrqpon | |
| DE10246329B4 (de) | Duftstoffrezeptoren | |
| Ruiz et al. | The effect of diazepam on ventricular automaticity induced by a local injury. Evidence of involvement of “peripheral type” benzodiazepine receptors | |
| DE10312073A1 (de) | 2-(Butyl-1-sulfonylamino)-N-[1(R)-(6-methoxy-pyridin-3yl)-propyl]-benzamid, dessen Verwendung als Medikament sowie dieses enthaltende pharmazeutische Zubereitungen | |
| DE10226934A1 (de) | Regulation der sPLA2G2A | |
| DE10013732A1 (de) | Das Kaliumkanalprotein KCNQ5, ein neuer Angriffspunkt bei Erkrankungen des zentralen Nervensystems und des Herz-Kreislauf-Systems | |
| Mansbach et al. | CP-135,807, a selective 5-HT1D agonist: effects in drug discrimination and punishment procedures in the pigeon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20060220 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BAYER SCHERING PHARMA AG |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BAYER SCHERING PHARMA AKTIENGESELLSCHAFT |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BAYER PHARMA AKTIENGESELLSCHAFT |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20110322 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| R18D | Application deemed to be withdrawn (corrected) |
Effective date: 20110323 |