WO2005082394A1 - インスリン受容体のリン酸化阻害剤 - Google Patents
インスリン受容体のリン酸化阻害剤 Download PDFInfo
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- WO2005082394A1 WO2005082394A1 PCT/JP2005/003559 JP2005003559W WO2005082394A1 WO 2005082394 A1 WO2005082394 A1 WO 2005082394A1 JP 2005003559 W JP2005003559 W JP 2005003559W WO 2005082394 A1 WO2005082394 A1 WO 2005082394A1
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- WIPO (PCT)
- Prior art keywords
- lys
- insulin receptor
- peptide
- seq
- phosphorylation
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
Definitions
- Insulin receptor phosphorylation inhibitors Insulin receptor phosphorylation inhibitors
- the present invention relates to an insulin receptor phosphorylation inhibitor or a dephosphorylation of phosphorylated insulin receptor containing a peptide having an insulin receptor phosphorylation inhibitory activity or a phosphorylated insulin receptor dephosphorylation promoting activity.
- Agent for example, an insulin receptor phosphorylation inhibitor or a dephosphorylation of phosphorylated insulin receptor containing a peptide having an insulin receptor phosphorylation inhibitory activity or a phosphorylated insulin receptor dephosphorylation promoting activity.
- the insulin receptor is an a 2 j32 hetetetrameric glycoprotein with protein tyrosine kinase activity. Binding of insulin to the ⁇ -subunit activates tyrosine-specific phosphotransferase activity, which results in autophosphorylation of specific tyrosine residues in the ⁇ -subunit cytoplasmic domain.
- the regions of autophosphorylation that are primarily responsible for the activation of phosphorylation of the substrate are located on the activation loop of the substrate at the tyrosine at position 115, the tyrosine at position 116, and the tyrosine at position 116 Consists of three tyrosine residues of tyrosine (CHERQUI, G.
- Figure 1 shows the amino acid sequence of the activation loop.
- 2 shows the comparison with the amino acid sequence of the III_IV linker of rat brain type IIA sodium channel.
- the amino acid sequence between the 147-aspartic acid and the 146-lysine of the III-IV linker is the 1-aspartic acid of the insulin receptor activation loop.
- lysines at positions 116 and 115 In the human skeletal muscle (hSkMl) sodium channel, phenylalanine at position 148 and glutamine at position 486 are replaced by leucine and lysine, respectively. Since lysine and arginine are both basic amino acids, the lysine residue matches the arginine at position 115 of the insulin receptor.
- KI FMK acetyl-KI FMK-amide
- EAHOLTZ G. et al., (1999) J. Gen. Physiol.
- Insulin receptors phosphorylate their own tyrosine residues (autophosphorylation) in vivo, triggered by the binding of insulin, and at the same time phosphorylate tyrosine residues of various proteins that serve as substrates, thereby It is responsible for information transmission within.
- the enzyme phosphatase controls signal transduction by dephosphorylating these phosphorylated tyrosine residues.
- the present invention identifies a peptide having an insulin receptor phosphorylation inhibitory activity or a phosphorylated insulin receptor dephosphorylation promoting activity, and uses the peptide to inhibit the insulin receptor phosphorylation inhibitor or phosphorylation.
- An object of the present invention was to provide a dephosphorylation promoter of an oxidized insulin receptor.
- the present inventors have investigated in vitro the phosphorylation of insulin receptor] 3 subunits using various oligopeptides in vitro.
- Lys-lie-Phe-Met-Lys SEQ ID NO: 1
- Lys-Ile-Tyr-Glu-Lys SEQ ID NO: 2
- Lys-lie-Gin-Met-Lys SEQ ID NO: 3
- Asp -The amino acid sequence represented by lie-Tyr-Glu-Thr SEQ ID NO: 4
- the peptide has an activity of inhibiting the phosphorylation of the insulin receptor or the activity of promoting the dephosphorylation of the phosphorylated insulin receptor.
- the present invention has been completed based on these findings.
- a phosphorylation inhibitor or a phosphorylated insulin receptor of an insulin receptor comprising a peptide of any of the following (a) or (b) or a pharmacologically acceptable salt thereof: Is provided.
- (b) has an amino acid sequence in which one or more amino acids are substituted, deleted, inserted, or added to the amino acid sequence described in (a) above, and inhibits phosphorylation of insulin receptor.
- a peptide having an activity or a dephosphorylation promoting activity is a peptide having an activity or a dephosphorylation promoting activity.
- an insulin receptor phosphorylation inhibitor that inhibits the phosphorylation of insulin receptor tyrosine by insulin is provided.
- phosphorylation of an insulin receptor is characterized by using any one of the following peptides (a) or (b) or a pharmacologically acceptable salt thereof: Methods for inhibiting or promoting dephosphorylation of phosphorylated insulin receptor are provided.
- Lys-lie-Phe-Met-Lys SEQ ID NO: 1
- Lys-lie-Tyr-Glu-Lys SEQ ID NO: 2
- Lys-lie-Gin-Met-Lys SEQ ID NO: 3
- Asp- a peptide having an amino acid sequence represented by lie-Tyr-Glu-Thr SEQ ID NO: 4
- (b) has an amino acid sequence in which one or more amino acids are substituted, deleted, inserted, or added to the amino acid sequence described in (a) above, and inhibits phosphorylation of insulin receptor.
- a peptide having an activity or a dephosphorylation promoting activity is described in (a) above.
- Figure 1 shows the rat brain type IIA sodium channel III-IV linker (K1480-M1501)
- 2 shows the amino acid sequence of the activation loop (G1149-L1170) of the human insulin receptor.
- F1438 and Q1486 are replaced by Leu and Lys OiSkMl respectively by K1308).
- Arrows indicate the similarity of the amino acids in the activation loops of the III-IV linker and the insulin receptor.
- FIG. 2 shows in vitro phosphorylation of purified insulin receptor in the presence or absence of peptides (LPFFD, KIQMK, DIYET, KIFMK, KIYEK).
- the purified insulin receptor was incubated with (or without) 100 nM insulin in buffer and with (or without) the peptide at 37 ° C for 10 minutes.
- the four results for each peptide shown in the upper panel show a typical immunoblot.
- Figure 3 shows the effect of synthetic peptides at different time points on insulin-stimulated tyrosine phosphorylation of the insulin receptor in vitro.
- Purified insulin receptor was incubated at 37 ° C for 0, 10, 20 or 30 minutes in a buffer containing 100 nM insulin. Each peptide was added to the sample for 20 or 30 minutes incubation 11 minutes after insulin stimulation.
- the results shown in the upper panel show a typical immunoblot.
- N 4 for each lane Best mode for carrying out the invention
- the peptides used in the present invention are Lys-Ile-Phe-Met-Lvs (SEQ ID NO: 1), Amino acid represented by Lys-Ile-Tyr-Glu-Lys (SEQ ID NO: 2), Lys-lie-Gin-Met-Lys (SEQ ID NO: 3) or Asp-Ile-Tyr-Glu-Thr (SEQ ID NO: 4) It is a peptide having a sequence.
- the peptide used in the present invention can be used as an insulin receptor phosphorylation inhibitor or a phosphorylated insulin receptor dephosphorylation accelerator. It is particularly preferred to use Lys-lie-Phe-Met-Lys (SEQ ID NO: 1) and Lys-Ile-Tyr-Glu-Lys (SEQ ID NO: 2) as phosphorylation inhibitors of the insulin receptor.
- the peptide having the amino acid sequence represented by Lys-lie-Tyr-Glu-Lys (SEQ ID NO: 2) and Asp-lie-Tyr-Glu-Thr (SEQ ID NO: 4) can be dephosphorylated from phosphorylated insulin receptor. It can be used as a phosphorylation accelerator.
- the peptide used in the present invention may have one or more amino acid sequences in the amino acid sequence as long as it has the activity of inhibiting the phosphorylation of the insulin receptor or the activity of promoting the dephosphorylation of the phosphorylated insulin receptor.
- Amino acids may be substituted, deleted, inserted, or added.
- the number of substitutions, deletions, insertions Z or amino acids added is not particularly limited, but is generally 1 to 5, preferably 1 to 4, and more preferably 1 to 4.
- the number is particularly preferably 1 or 2.
- conservative substitution is preferable, and specifically, substitution with an amino acid in parentheses below is mentioned.
- the peptide used in the present invention may be modified.
- modification refers to a modification of the structure of the amino acid itself constituting the peptide, a cross-linking between adjacent or non-adjacent amino acid residues in the peptide, a modification of a peptide bond, a modification of a peptide basic skeleton, a side chain function.
- Specific examples of the modification include, for example, introduction of a functional group such as alkylation, esterification, halogenation, or amination, conversion of a functional group by oxidation, reduction, addition, or elimination, and sugar compound (monosaccharide, disaccharide).
- Sugars, oligosaccharides, or polysaccharides) or lipid compounds, Phosphorylation or biotinylation can be mentioned, but is not limited to these.
- a peptide or a modified peptide having an amino acid sequence in which one or more amino acids are substituted, deleted, inserted and / or added has an inhibitory activity on insulin receptor phosphorylation or Whether the phosphorylated insulin receptor has the activity of promoting dephosphorylation can be determined by the test method described in detail and specifically in the Examples of the present specification, or by appropriately modifying or modifying the above test method. It can be easily confirmed by those skilled in the art.
- the salt of the peptide used in the present invention may be any pharmacologically acceptable acid addition salt or salt addition salt.
- the acid (inorganic acid and organic acid) addition salts include salts with inorganic acids such as hydrochloric acid, phosphoric acid, hydrobromic acid, sulfuric acid or nitric acid, or acetic acid, formic acid, propionic acid, fumaric acid, and maleic acid
- salts with organic acids such as succinic acid, tartaric acid, citric acid, malic acid, oxalic acid, benzoic acid, methanesulfonic acid, toluenesulfonic acid, benzenesulfonic acid, aspartic acid or glutamic acid.
- Bases inorganic bases and organic bases
- addition salts include salts with inorganic bases such as sodium hydroxide, potassium hydroxide, ammonium hydroxide or magnesium hydroxide, or caffeine, piperidine, trimethyla. Salts with organic bases such as min, triethylamine, pyridine or lysine are mentioned.
- Salts can be prepared using a suitable acid such as hydrochloric acid, or a suitable base such as sodium hydroxide.
- a suitable acid such as hydrochloric acid
- a suitable base such as sodium hydroxide.
- it can be prepared by treating with water or a liquid containing an inert water-miscible organic solvent such as methanol, ethanol or dioxane using a standard protocol.
- the processing temperature is usually
- the temperature is 0 to 10 ° C., preferably room temperature.
- the peptide or its salt used in the present invention can be synthesized by a conventional method of synthesizing the peptide.
- a conventional method of synthesizing the peptide For example, an azide method, an acid chloride method, an acid anhydride method, a mixed acid anhydride method, a DCC method, an active ester method, a carboimidazole method, an acid-reduction method and the like can be mentioned.
- an azide method an acid chloride method, an acid anhydride method, a mixed acid anhydride method, a DCC method, an active ester method, a carboimidazole method, an acid-reduction method and the like can be mentioned.
- solid-phase synthesis or liquid-phase synthesis is used.
- the desired peptide or its salt is synthesized by condensing an amino acid capable of constituting the peptide or its salt with the remaining portion and, if the product has a protecting group, removing the protecting group.
- the peptide or its salt can be purified by a combination of ordinary purification methods such as solvent extraction, distillation, column chromatography, liquid chromatography, recrystallization and the like.
- the peptide or its salt usually has a carboxyl
- R in the ester includes an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an aralkyl group having 7 to 12 carbon atoms.
- the peptides or salts thereof used in the present invention include those in which the N-terminal amino group is protected with a protecting group, and those having a sugar chain bonded thereto, such as complex peptides.
- a gene encoding the amino acid sequence of the peptide is used to recompose in a host such as a microbial cell, a plant cell, or an animal cell by a genetic engineering technique. Production method as protein (peptide).
- an oligonucleotide encoding a desired amino acid sequence is synthesized by a conventional method, assembled by a PCR method or the like, and then introduced into an appropriate expression vector.
- an appropriate host cell is transformed with the expression vector.
- peptides are produced in a culture solution or host cells.
- nucleotide sequence encoding FLAG peptide human immunoglobulin constant region is added to peptide coding nucleotide sequence to facilitate isolation and purification of the produced peptide or to increase stability Then, this may be expressed.
- any expression system eukaryotic cell, eg, animal cell, eg, established mammalian cell line, fungal cell, and yeast cell, and prokaryotic cell, eg, bacterial cell, eg, E. coli cell, etc.
- the peptides used in the present invention are expressed in mammalian cells, such as COS cells, CH0 cells.
- conventional promoters useful for expression in mammalian cells can be used. For example, it kills mosquitoes 3 ⁇ 4 possible to use human cytomegalovirus early promoter (human cytomega ⁇ ovirus immediate early promoter).
- promoters for gene expression in mammalian cells include viral promoters and human polypeptides such as retroviruses, polioviruses, adenoviruses, and simian virus 40 (SV40).
- a mammalian cell-derived promoter such as elongation factor-la (HEF-1 ⁇ ) may be used.
- the peptide can be purified according to a conventional method.For example, it can be purified using a method used for normal protein or peptide purification, such as gel filtration, reverse-phase ⁇ PLC, and ion-exchange power lamb purification. .
- the peptide used in the present invention has an insulin receptor phosphorylation inhibitory activity or a phosphorylated insulin receptor dephosphorylation promoting activity, and can be administered to mammals such as humans. It is effective for treating or preventing cancer and the like.
- the peptide used in the present invention can be used as it is or in the form of being contained in various solid carriers, liquid carriers, emulsifying dispersants and the like usually used in the field of pharmaceutical production.
- its formulation can be appropriately selected according to the purpose of use and the intended use. Examples thereof include tablets, pills, It can be used in the form of powders, solutions, suspensions, emulsions, granules, capsules, suppositories, injections (solutions, suspensions, etc.).
- Carriers used for tablet formation include excipients such as lactose, sucrose, sodium chloride, glucose, urea, starch, calcium carbide, kaolin, crystalline cellulose, and cayic acid, and water or alcohols.
- Starch, gelatin, power Binders such as sodium propyloxymethylcellulose (CMC-Na), methylcellulose (MC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), calcium phosphate, polyvinylpyrrolidone, dried starch, agar powder, laminaran powder, Sodium bicarbonate, calcium carbonate, polyoxyethylene sorbitan fatty acid esters, sodium lauryl sulfate, stearic acid monoglyceride, starch, lactose, etc., disintegrants, sucrose, stearin, cocoa butter, hydrogenated oil sugar disintegration controlling agents, Adsorbents such as quaternary ammonium base, lauryl sulfate night, and colloidal
- the liquid preparation, emulsion and suspension are preferably sterilized and isotonic with blood and blood.
- water, ethyl alcohol are used as diluents.
- Suspending agents such as cellulose, sodium alginate, aluminum monostearate, etc., tonicity agents such as sodium chloride, dextrose, glycerin, etc., preservatives such as paraoxybenzoates, benzyl alcohol, chlorobutanol, etc.
- tonicity agents such as sodium chloride, dextrose, glycerin, etc.
- preservatives such as paraoxybenzoates, benzyl alcohol, chlorobutanol, etc.
- Auxiliaries, buffers, soothing agents and the like can also be used in combination.
- composition of each of the above forms may further contain, if necessary, commonly used coloring agents, flavors, flavors, sweeteners, etc., and may contain other active pharmaceutical ingredients. I do not care.
- the peptide When the peptide is used as a pharmaceutical composition, the peptide is generally used in a proportion of 0.001 to 90% by weight, preferably 0.001 to 80% by weight. I do.
- the pharmaceutical composition of the present invention can be administered to mammals including humans. Administration route May be administered orally or parenterally.
- the dose of the pharmaceutical composition of the present invention should be appropriately adjusted according to conditions such as the age, sex, body weight, symptoms, and administration route of the patient. Per day g from 1, OO Omg
- the above dose may be administered once a day or divided into several times a day.
- the administration period and the administration interval are not particularly limited, and the administration may be carried out every day or every several days.
- Anti-phosphotyrosine antibody (4G10) was obtained from Upstate Biotechnology (Lake Placid, NY, USA). Insulin receptor, insulin and ATP from rat liver purified by affinity chromatography of wheat germ agglutinin were purchased from Sigma Chemical Co. (St Louise, MO, USA).
- the peptide was automatically synthesized by a solid phase method using the Fmoc method on an Applied Biosystems 433A peptide synthesizer, and the N-terminus was acetylated (indicated by Ac—) and the C-terminus was amidated (indicated by NH 2 ). After cleavage with TFA, the peptide was eluted with a gradient of 90% solvent A / 10% solvent B to 60% solvent AZ 40% solvent B (where solvent A was a 0.1% aqueous trifluoroacetic acid solution and solvent B was 0% (1% TFA in acetonitrile) for 30 min on a reverse phase C18 HP LC column. Peptides were measured by ion spray mass spectrum analysis on a Perkin-Elmer SCIEX API III mass spectrometer.
- Purified insulin receptor (l ⁇ ug protein) is combined with ⁇ ⁇ ⁇ insulin at 37 ° C for 10 minutes, 50 ⁇ l of incubation buffer (50 mM HEPES, pH 7.4, 125 mM NaCl, lmM EDTA, lOmM Phosphorylation in MgCl 2> 5 mM MnCl 2 , 5 mM dithiothreitol, lmM phenylmethylsulfonyl fluoride, and 0.2 mM ATP).
- Peptides (LPFFD, KIQMK, DIYET, KIFMK, and KIYEK; 0.04, 0.4 or 4 mM, respectively) were also added prior to incubation. After incubation, a sample for SDS-PAGE was prepared by adding Laemmli sample buffer and boiling for 5 minutes, and Western blot analysis was performed using an anti-phosphotyrosine antibody.
- Purified insulin receptor (1 ⁇ g protein) was incubated at 37 ° C. in incubation buffer for 0, 10, 20, or 30 minutes. Insulin (100 nM) was added to all samples at 0 minutes. The reaction was stopped by adding Laemmli sample buffer 0 or 10 minutes after insulin stimulation into the sample designed for 0 or 10 minutes incubation.
- the maximum level of tyrosine phosphorylation of the insulin receptor reached 10 minutes after insulin stimulation and was maintained for at least 30 minutes in the incubation buffer. Therefore, the insulin-stimulated response of the insulin receptor after 100 minutes was considered to be 100%.
- the maximum level of tyrosine phosphorylation was reduced when mash was added 11 minutes after stimulation (Fig. 3).
- KIQMK and KIFMK were less effective at reducing tyrosine phosphorylation levels.
- the two peptides, KIYEK and DIYET almost completely restored the increased insulin receptor phosphorylation when observed after 10 minutes.
- LPFFD did not affect insulin-stimulated autophosphorylation.
- KIYEK and DIYET containing the IYE sequence present on the activation loop of the insulin receptor have a dephosphorylating effect on the autophosphorylated insulin receptor.
- KIFMK which contains the IFM sequence in the III-IV linker of the sodium channel, effectively suppresses autophosphorylation, but dephosphorylates the autophosphorylated insulin receptor. Is weak. The difference in dephosphorylation between KIYEK and KIFMK may be due to the molecular mechanism of dephosphorylation. Since DIYET was also able to dephosphorylate phosphorylated residues, the IYE (Ile-Tyr-Glu) sequence is considered to be important for dephosphorylation. Industrial applicability
- a phosphorylation inhibitor of an insulin receptor containing a peptide having an insulin receptor phosphorylation inhibitory activity or a phosphorylated insulin receptor dephosphorylation promoting activity or dephosphorylation of a phosphorylated insulin receptor is provided.
- Agent can be provided.
- the phosphorylation inhibitor of the insulin receptor or the dephosphorylation promoter of the phosphorylated insulin receptor of the present invention is useful as a medicine and an experimental reagent.
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Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004051015A JP2005239629A (ja) | 2004-02-26 | 2004-02-26 | インスリン受容体のリン酸化阻害剤 |
JP2004-051015 | 2004-02-26 |
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WO2005082394A1 true WO2005082394A1 (ja) | 2005-09-09 |
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PCT/JP2005/003559 WO2005082394A1 (ja) | 2004-02-26 | 2005-02-24 | インスリン受容体のリン酸化阻害剤 |
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WO (1) | WO2005082394A1 (ja) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001520508A (ja) * | 1995-06-07 | 2001-10-30 | ザ リージェンツ オブ ザ ユニバーシティー オブ カリフォルニア | インスリン抵抗性の治療 |
-
2004
- 2004-02-26 JP JP2004051015A patent/JP2005239629A/ja not_active Withdrawn
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2005
- 2005-02-24 WO PCT/JP2005/003559 patent/WO2005082394A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001520508A (ja) * | 1995-06-07 | 2001-10-30 | ザ リージェンツ オブ ザ ユニバーシティー オブ カリフォルニア | インスリン抵抗性の治療 |
Non-Patent Citations (4)
Title |
---|
DESMARAIS S. ET AL: "Inhibition of protein tyrosine phosphates PTP1B and CD45 by Sulfotyrosyl peptides.", ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS., vol. 354, no. 2, 1998, pages 225 - 231 * |
EAHOLTZ G. ET AL: "Kinetic analysis of block of open sodium channels by a peptide containing the isoleucine, phenylalanine,and methionine (IFM) motif from the inactivation gate.", JOURNAL OF GENERAL PHYSIOLOGY., vol. 111, no. 1, 1998, pages 75 - 82 * |
HIROSE M. ET AL: "Suppression of insulin signaling by a synthetic peptide KIFMK suggests the cytoplasmic linker between DIII-S6 and DIV-S1 as a local anaesthetic binding site on the sodium channel.", BRITISH JOURNAL OF PHARMACOLOGY., vol. 142, no. 1, May 2004 (2004-05-01), pages 222 - 228 * |
TANG L. ET AL: "Role of an S4-S5 linker in sodium channel inactivation probed by mutagenesis and a peptide blocker.", JOURNAL OF GENERAL PHYSIOLOGY., vol. 108, no. 2, 1996, pages 89 - 104 * |
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