WO2011052523A1 - 抗原性glp-1アナログの糖鎖付加体 - Google Patents
抗原性glp-1アナログの糖鎖付加体 Download PDFInfo
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- WO2011052523A1 WO2011052523A1 PCT/JP2010/068814 JP2010068814W WO2011052523A1 WO 2011052523 A1 WO2011052523 A1 WO 2011052523A1 JP 2010068814 W JP2010068814 W JP 2010068814W WO 2011052523 A1 WO2011052523 A1 WO 2011052523A1
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- WIPO (PCT)
- Prior art keywords
- sugar chain
- glycosylated
- analog
- glp
- amino acid
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Classifications
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- 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
- C07K14/575—Hormones
- C07K14/605—Glucagons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/22—Hormones
- A61K38/26—Glucagons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/14—Prodigestives, e.g. acids, enzymes, appetite stimulants, antidyspeptics, tonics, antiflatulents
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/04—Anorexiants; Antiobesity agents
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- 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
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- 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
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- 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 present invention relates to a sugar chain adduct of an antigenic GLP-1 analog obtained by adding a sugar chain to a highly antigenic GLP-1 analog.
- GLP-1 (glucagon-like peptide-1) is a peptide of intestinal origin that is deeply involved in the regulation of sugar homeostasis. GLP-1 is synthesized in intestinal L cells by tissue-specific post-translational processing of the glucagon precursor preproglucagon and is released into the circulation in response to a diet. This peptide is the major mediator of the enteroaxial axis and acts by binding to specific receptors.
- GLP-1 is known to act mainly on the pancreas and promote insulin release by ⁇ cells in a glucose concentration-dependent manner. It has also been suggested that it may suppress glucagon secretion, delay gastric cavitation, and increase peripheral glucose processing.
- GLP-1 can normalize postprandial glucose levels in non-insulin dependent diabetic patients, suggesting the possibility of GLP-1 as a therapeutic agent.
- GLP-1 also has the effect of improving glycemic control in insulin dependent diabetic patients.
- the insulin release promoting action of GLP-1 depends on the plasma glucose concentration, GLP-1 mediated insulin release is low at low plasma glucose concentrations, and there is an advantage that serious hypoglycemia does not occur. Therefore, it is considered that highly safe treatment of diabetes can be achieved by controlling the blood GLP-1 level as necessary.
- the half-life of GLP-1 in blood is as extremely short as 2 to 6 minutes, and there is a problem that its potential as a therapeutic agent is limited.
- Patent Document 1 discloses a PEGylated GLP-1 compound comprising a GLP-1 compound conjugated to at least one polyethylene glycol (PEG) molecule.
- PEG polyethylene glycol
- each PEG is bound to the GLP-1 compound at the Cys or Lys amino acid or at the carboxy terminal amino acid.
- the PEGylated GLP-1 compound has an elimination half-life of at least 1 hour.
- Patent Document 1 a physiologically active peptide with an extended half-life and delayed clearance is obtained as compared to an unPEGylated peptide.
- PEGylated GLP-1 compounds and compositions also have diabetes, obesity, irritable bowel syndrome, and lower blood glucose, suppress stomach and / or intestinal motility, and It is disclosed that it is useful for treatment of health conditions such as suppressing intestinal excretion or suppressing food intake (eg, Non-Patent Document 1).
- Non-patent Document 1 Since PEG is a compound that is not metabolized in vivo, if PEGylated GLP-1 compound is continuously administered, PEG accumulates in the body and there is a risk of causing harm to the body (Non-patent Document 1). .
- Patent Document 2 describes a method of binding a modified hyaluronic acid having a molecular weight of about 200 KDa to a GLP-1 analog.
- Patent Document 2 describes a method of binding a modified hyaluronic acid having a molecular weight of about 200 KDa to a GLP-1 analog.
- a glycosylated peptide having a uniform length and structure is required.
- Patent Document 3 describes a method of introducing a glycosylated amino acid at positions 26, 34, and / or 37 of GLP-1, but the type of sugar chain and the sugar chain are added. The position is not necessarily optimized.
- the present inventors have also developed glycosylated GLP-1 having a long activity in blood and high activity by changing the type and position of sugar chain (for example, Patent Document 4).
- exendin-4 exendin-4 (non-existing) found in saliva from Helderma as a compound having a structure similar to GLP-1, having similar activity, and high blood stability.
- Patent Document 2 is marketed in the United States.
- exendin-4 is a non-human sequence, it has higher antigenicity than other GLP-1 analogs, and there is concern over the emergence of neutralizing antibodies and associated decrease in drug efficacy due to long-term administration (Non-patent Document 3). ⁇ 5).
- liraglutide obtained by binding a fatty acid to GLP-1 has been developed as one of GLP-1 analogs (see, for example, Non-Patent Documents 6 to 8).
- the affinity for albumin is increased. Since liraglutide bound to albumin is gradually released into the blood, the half-life is about 10 hours and a long-term effect is expected. Convenience is also high because subcutaneous injection once a day is sufficient. In addition to single use, monotherapy is also possible. However, since it has a structure different from the natural type, there is concern about antigenicity as with exendin-4.
- An object of the present invention is to improve a GLP-1 analog having high antigenicity and to provide a GLP-1 analog having reduced antigenicity without reducing its blood glucose level inhibitory activity.
- the present inventors have reduced the blood glucose level inhibitory activity by adding a sugar chain to an antigenic GLP-1 analog such as exendin-4.
- an antigenic GLP-1 analog such as exendin-4.
- the present inventors have found that the antigenicity is lowered and have completed the present invention.
- the present invention [1] A glycosylated product of an antigenic GLP-1 analog, wherein at least one amino acid of the antigenic GLP-1 analog is substituted with a glycosylated amino acid and has GLP-1 activity; [2] An antigenic GLP-1 analog glycosylation product according to [1] above, wherein the glycosylated amino acid is glycosylated Asn or glycosylated Cys Sugar chain adducts of [3] A glycosylated form of the antigenic GLP-1 analog according to [1] or [2] above, wherein in the glycosylated amino acid, the sugar chain and the amino acid are bonded via a linker.
- a glycosylated adduct of an antigenic GLP-1 analog [4] The antigenic GLP-1 analog sugar chain adduct according to any one of [1] to [3] above, wherein the sugar chain is a sugar chain composed of four or more sugars.
- a glycosylated adduct of an antigenic GLP-1 analog [5] An antigenic GLP-1 analog sugar chain adduct according to any one of [1] to [4] above, wherein the sugar chain is a double-stranded complex type sugar chain GLP-1 analog sugar chain adducts; [6] The sugar chain adduct of the antigenic GLP-1 analog according to [5], wherein the sugar chain is a dicialo sugar chain, a monosialo sugar chain, an asialo sugar chain, a diglucnac sugar chain, and a dimannose sugar chain
- a sugar chain adduct of an antigenic GLP-1 analog which is a sugar chain selected from the group consisting of: [7] The antigenic GLP-1 analog sugar chain adduct according to [5] above, wherein the sugar chain comprises [Wherein R 1 and R 2 are the same or different, Indicates.
- a sugar chain adduct of an antigenic GLP-1 analog which is a sugar chain represented by: [8] An antigenic GLP-1 analog glycosylated adduct according to any one of [1] to [7] above, wherein the antigenic GLP-1 analog is exendin-4 A glycosylated adduct of a sex GLP-1 analog; [9] The glycosylated form of the antigenic GLP-1 analog according to [8] above, wherein the site substituted with the glycosylated amino acid is at position 30 in the amino acid sequence of SEQ ID NO: 2.
- a glycosylation of an antigenic GLP-1 analog [10] An antigenic GLP-1 analog glycosylated adduct according to [8] above, In the peptide consisting of the amino acid sequence set forth in SEQ ID NO: 2, Gly at position 30 is substituted with glycosylated Cys;
- the sugar chain is a dicialo sugar chain represented by the following formula: And In the glycosylated Cys, a glycosylated product of an antigenic GLP-1 analog in which the sugar chain and the Cys are bonded via a linker; [11] An antigenic GLP-1 analog glycosylated adduct according to any one of [1] to [7] above, wherein the antigenic GLP-1 analog is liraglutide 1 analog sugar chain adduct; [12] A glycosylated form of the antigenic GLP-1 analog according to [11] above, wherein the site substituted with the glycosylated amino acid is at position 30 in the amino acid sequence of SEQ ID NO:
- a glycosylation of an antigenic GLP-1 analog [13] An antigenic GLP-1 analog glycosylated adduct according to [11] above, In the peptide consisting of the amino acid sequence set forth in SEQ ID NO: 3, Arg at position 30 is substituted with glycosylated Cys;
- the sugar chain is a dicialo sugar chain represented by the following formula, or Asialo sugar chain represented by the following formula
- glycosylated Cys a glycosylated product of an antigenic GLP-1 analog in which the sugar chain and the Cys are bonded via a linker;
- the antigenic GLP-1 analog glycosylated adduct of any one of [1] to [13] above, wherein the sugar chain is substantially uniform.
- Analog sugar chain adducts [15] An antigenic GLP-1 analog sugar chain adduct according to any one of [1] to [13] above, wherein the sugar chain is 99% or more uniform. Analog sugar chain adducts; [16] The antigenic GLP-1 analog glycosylated adduct according to any one of [1] to [15] above, wherein the antigenic GLP-1 analog is not added with a sugar chain. An antigenic GLP-1 analog glycosylated adduct having an antigenicity of half or less; [17] The sugar chain adduct of the antigenic GLP-1 analog according to any one of [1] to [16] above, wherein the antigenic GLP-1 analog has no sugar chain added and is more antigenic.
- the sugar chain adduct of the antigenic GLP-1 analog of the present invention can be reduced in antigenicity by adding a sugar chain without reducing blood glucose level inhibitory activity. Therefore, a safe pharmaceutical product that maintains the superiority of exendin-4, which has high blood stability and high blood glucose level inhibiting activity, and the superiority of liraglutide, which can reduce the number of administrations due to sustained release, is achieved. Can be provided. Since the added sugar chain is also easily decomposed in vivo, the accumulation thereof does not cause phytotoxicity to the living body. Moreover, since many sugar chains used in the present invention are relatively short, those having a uniform structure can be obtained without going through complicated production steps. Therefore, a high-quality antigenic GLP-1 analog sugar chain adduct at a pharmaceutical level can be obtained on a large scale and stably.
- the HPLC chromatogram of 30th-position Cys-asialo-glycosylated liraglutide (SEQ ID NO: 8) is shown.
- the HPLC chromatogram of the peptide (SEQ ID NO: 14) in which Arg at position 30 of liraglutide was substituted with Cys in Example 4 is shown.
- the HPLC chromatogram of 30th-position Cys-disialoglycosylated liraglutide (SEQ ID NO: 9) is shown.
- the result of having evaluated the antigenicity reduction effect of exendin-4 by glycosylation is shown.
- the result of the oral glucose tolerance test (OGTT) of glycosylated liraglutide is shown.
- Glycosylated liraglutide exhibited a higher blood glucose level inhibitory action than non-glycosylated liraglutide.
- the result of having evaluated the blood glucose level lowering effect of sugar chain addition liraglutide using a db / db mouse is shown.
- Glycosylated liraglutide exhibited a blood glucose level lowering action and persistence equivalent to that of non-glycosylated liraglutide.
- GLP-1 refers to glucagon-like peptide-1 and refers to GLP-1 (7-37).
- GLP-1 (7-37) has the following amino acid sequence. His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys-Glu-Phe-Ile-Ala-Trp- Leu-Val-Lys-Gly-Arg-Gly (SEQ ID NO: 1)
- GLP-1 analog means a peptide structurally similar to GLP-1 and / or a peptide having a structure overlapping with GLP-1, for example: one or several amino acids in GLP-1 Peptides deleted, substituted or added; peptides in which one or several amino acids of GLP-1 are conservatively substituted; GLP-1 variants; fragments of GLP-1 having GLP-1 activity; GLP Refers to extended GLP-1 etc. having -1 activity.
- antigenic GLP-1 analog refers to an antigenic GLP-1 analog.
- Antigenicity means antigenicity in an individual to which the antigenic GLP-1 analog is administered, and the degree thereof is not limited. Antigenicity can be evaluated by a method known to those skilled in the art or a method analogous thereto, for example, by sensitizing a mouse with an antigenic GLP-1 analog, and then anti-GLP- (1) A method for measuring an analog antibody titer is mentioned.
- antigenic GLP-1 analogs include exendin-4 (hereinafter sometimes referred to as “Ex-4”), liraglutide, taspoglutide (also known as BIM-51077, Giannokakis, N .: Curr. Opin.
- exendin-4 refers to a peptide structurally similar to the peptide and / or the peptide in addition to the peptide consisting of the amino acid sequence set forth in SEQ ID NO: 2.
- a peptide having an overlapping structure for example: a peptide in which one or several amino acids are deleted, substituted or added in the peptide; a peptide in which one or several amino acids of the peptide are conservatively substituted; A peptide variant; a fragment of the peptide having activity equivalent to exendin-4; a peptide obtained by extending the peptide having activity equivalent to exendin-4, etc., and corresponding to the GLP-1 analog Including things.
- “liraglutide” is a peptide having the amino acid sequence set forth in SEQ ID NO: 3 and a peptide structurally similar to the peptide and / or overlapping with the peptide.
- a peptide having the above structure for example: a peptide in which one or several amino acids are deleted, substituted or added in the peptide; a peptide in which one or several amino acids of the peptide are conservatively substituted; the peptide A fragment of the peptide having an activity equivalent to that of liraglutide; a peptide obtained by extending the peptide having an activity equivalent to that of liraglutide, etc., which corresponds to the above GLP-1 analog.
- BIM-51077 means a peptide having the amino acid sequence set forth in SEQ ID NO: 18 as well as a peptide structurally similar to the peptide and / or overlapping with the peptide.
- a peptide having the above structure for example: a peptide in which one or several amino acids are deleted, substituted or added in the peptide; a peptide in which one or several amino acids of the peptide are conservatively substituted; the peptide A fragment of the peptide having an activity equivalent to that of liraglutide; a peptide obtained by extending the peptide having an activity equivalent to that of liraglutide, etc., which corresponds to the above GLP-1 analog.
- amino acid is used in its broadest sense and includes not only natural amino acids but also non-natural amino acids such as amino acid variants and derivatives.
- amino acids herein, for example, natural proteogenic L-amino acids; D-amino acids; chemically modified amino acids such as amino acid variants and derivatives; norleucine, It will be understood that natural non-proteogenic amino acids such as ⁇ -alanine, ornithine; and chemically synthesized compounds having properties known in the art that are characteristic of amino acids.
- unnatural amino acids examples include ⁇ -methyl amino acids (such as ⁇ -methylalanine), D-amino acids, histidine-like amino acids (2-amino-histidine, ⁇ -hydroxy-histidine, homohistidine, ⁇ -fluoromethyl-histidine and ⁇ -Methyl-histidine, etc.), amino acids with extra methylene in the side chain (“homo" amino acids) and amino acids in which the carboxylic acid functional amino acids in the side chain are replaced with sulfonic acid groups (such as cysteic acid).
- the amino acid contained in the compound of the present invention consists only of natural amino acids.
- the number of amino acids to be substituted is the GLP-1 analog glycosylated adduct of the present invention is GLP.
- GLP-1 is not particularly limited as long as it retains activity, but is 1 to 9, preferably 1 to 5, more preferably about 1 to 3, or within 20% of the total length, preferably within 10% It is.
- the amino acid to be substituted or added can be a natural amino acid, a non-natural amino acid or an amino acid analog, and is preferably a natural amino acid.
- modified forms of GLP-1, Ex-4, and liraglutide are compounds obtained by modifying GLP-1 etc. naturally or artificially. Such modifications include, for example, alkylation, acylation (eg acetylation), amidation, carboxylation, ester formation, disulfide bond formation, glycosylation of one or more amino acid residues such as GLP-1 , Lipidation, phosphorylation, hydroxylation, binding of a labeling component, and the like. For example, a peptide in which the C-terminal is amidated is also included.
- fragment such as GLP-1 having GLP-1 activity means that one or more amino acids are deleted from the N-terminal and / or C-terminal of the original GLP-1 and the like, and GLP-1 etc. that maintain GLP-1 activity.
- the “elongated peptide having GLP-1 activity” means that one or more amino acids are added to the N-terminus and / or C-terminus of the original GLP-1, etc., and the GLP-1 activity (See, for example, Endocrinology, 125, 3109-14 (1989)).
- the “glycoadduct of an antigenic GLP-1 analog” is characterized in that at least one amino acid in the antigenic GLP-1 analog is substituted with a glycosylated amino acid.
- the “glycoadduct of an antigenic GLP-1 analog” may be referred to as “glycoadded antigenic GLP-1”.
- the glycosylated antigenic GLP-1 analog of the present invention also includes a salt thereof.
- the salt may be either an acid addition salt or a base addition salt.
- Acids commonly used to form acid addition salts include inorganic acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, phosphoric acid, and p-toluenesulfonic acid, methanesulfonic acid, oxalic acid, p- Organic acids such as bromophenyl sulfonic acid, carboxylic acid, succinic acid, citric acid, benzoic acid and acetic acid.
- Base addition salts include salts derived from inorganic bases such as ammonium hydroxide or alkali or alkaline earth metal hydroxides, carbonates, bicarbonates and the like. In particular, a pharmaceutically acceptable salt is preferable.
- the “glycosylated amino acid” is an amino acid to which a sugar chain is bound, and the sugar chain and the amino acid may be bound via a linker.
- the amino acid is bound to the reducing end of the sugar chain.
- the type of amino acid to which the sugar chain is bound and either a natural amino acid or an unnatural amino acid can be used.
- the glycosylated amino acid has the same or similar structure as that present as a glycopeptide (glycoprotein) in the living body
- the glycosylated amino acid is a glycosylated Asn such as an N-linked sugar chain.
- Glycosylated Ser such as O-linked glycan and Thrylated Thr are preferred, and Glycylated Asn is particularly preferred.
- the amino acid of the sugar chain-added amino acid has two or more amino acids in the molecule such as aspartic acid and glutamic acid.
- Amino acids with carboxyl groups, lysine, arginine, histidine, tryptophan, etc. amino acids with two or more amino groups in the molecule, amino acids with hydroxyl groups in molecules such as serine, threonine, tyrosine, and thiol groups in molecules such as cysteine
- amino acids having an amide group in the molecule such as asparagine and glutamine.
- aspartic acid glutamic acid, lysine, arginine, serine, threonine, cysteine, asparagine, and glutamine are preferable, and cysteine and lysine are particularly preferable.
- glycosylated antigenic GLP-1 analog of the present invention when the sugar chain structure, the structure other than the sugar chain, the sugar chain addition site, and the number of added sugar chains are the same, the glycosylated amino acid
- the glycosylated Asn not via the linker
- the glycosylated Cys via the linker
- a sugar chain and an amino acid are bonded via a linker
- those used in the art can be widely used.
- a is an integer and is not limited as long as the desired linker function is not inhibited, but preferably represents an integer of 0 to 4
- C 1-10 polymethylene —CH 2 —R—, wherein R is alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aryl, substituted aryl, carbocyclic group, substituted carbocycle A group formed by removing one hydrogen atom from a group selected from the group consisting of a group, a heterocyclic group and a substituted heterocyclic group), — (CO) — (CH 2 ) a — (CO) — (In the formula A is an integer and is not limited as long as the desired linker function
- the antigenicity of the glycosylated antigenic GLP-1 analog can be reduced.
- the glycosylated amino acid of the glycosylated antigenic GLP-1 analog when the sugar chain and the amino acid are bound via a linker, compared to when the sugar chain and the amino acid are bound via a linker Thus, the blood stability of the glycosylated antigenic GLP-1 analog can be increased.
- glycosylated antigenic GLP-1 analog of the present invention can be produced by any method according to the description (for example, “description of glycosylated antigenic GLP-1 analog in which an amino acid is substituted with a glycosylated amino acid”).
- the glycosylated antigenic GLP-1 analog produced by any of the methods A to C described later is not limited, but “glycosylated antigen in which an amino acid is substituted with a glycosylated amino acid” GLP-1 analog ”.
- glycosylated antigenic GLP-1 analog in which a sugar chain to which no amino acid is bonded is bound to an amino acid on a peptide directly or via a linker;
- a sugar-added antigenic GLP-1 analog obtained by extending a sugar chain already added by adding a sugar or a sugar chain to the resulting sugar chain; 1 or 2 in the amino group and / or carboxyl group of the glycosylated amino acid;
- the final structure of the glycosylated antigenic GLP-1 analog obtained by binding several amino acids and further linking this with one or a plurality of GLP-1 analog fragments is consistent with the present invention Of glycosylated antigenic GLP-1 analogues.
- the number of amino acids in the antigenic GLP-1 analog substituted with glycosylated amino acids depends on the physiological activity such as blood stability and blood glucose level suppressing activity, and the number of amino acids present in the final glycosylated antigenic GLP-1 analog. It may be appropriately adjusted depending on the number, molecular weight of the glycosylated antigenic GLP-1 analog before and after glycosylation, and the like. For example, 1 to 5 are preferably substituted, and 1 to 3 are more preferably substituted. From the standpoint of simplicity, it may be preferable to select one substitution if the desired activity is obtained with one substitution.
- glycosylated antigenic GLP-1 analog in which one amino acid of an antigenic GLP-1 analog is substituted with a glycosylated amino acid, one or more of the amino acids other than the glycosylated amino acid are further glycosylated.
- the blood stability increases and the blood glucose level inhibitory activity tends to decrease (however, the increased blood stability can compensate for the decreased blood glucose level inhibitory activity. ).
- the site at which an amino acid is substituted with a glycosylated amino acid is not particularly limited, but those skilled in the art can impart activity to reduce antigenicity and have stability in blood. In addition, it is possible to appropriately select a site where the blood glucose level inhibitory activity is not lower than that of GLP-1.
- any site of the antigenic GLP-1 analog can be selected according to the desired activity.
- the position corresponding to the X position of the amino acid sequence of the GLP-1 peptide described in SEQ ID NO: 1 in the antigenic GLP-1 analog refers to the amino acid sequences of various antigenic GLP-1 analogs. This means a position corresponding to the X position of the amino acid sequence of the GLP-1 peptide described in SEQ ID NO: 1, and such a position can be easily determined by those skilled in the art based on the surrounding amino acid sequences and the like.
- amino acid sequences of Ex-4 and liraglutide which are antigenic GLP-1 analogs, correspond to the amino acid sequence of the GLP peptide described in SEQ ID NO: 1 as follows.
- Ex-4 or liraglutide has no additions, substitutions or deletions in its amino acid sequence
- the amino acids vertically aligned in the above table are the amino acids in the “corresponding positions”.
- those skilled in the art can determine the “corresponding position” based on the amino acid sequences around each.
- the site where amino acids are substituted with glycosylated amino acids reduces antigenicity of glycosylated antigenic GLP-1 analogs, for example, antigen recognition in antigenic GLP-1 analogs. It is preferable to be around the part. For example, it is effective to add a sugar chain to the site corresponding to position 30 of the GLP-1 peptide described in SEQ ID NO: 1.
- substitution of an amino acid at a site close to the N-terminus of GLP-1 is also preferred.
- sites for replacing amino acids with glycosylated amino acids for example, positions 12 and 30; positions 20 and 28; positions 16 and 24; positions 16 and 30; positions 24 and 30 respectively. And the like.
- sites for replacing two or more amino acids with glycosylated amino acids include, for example, positions 12 and 30; positions 20 and 28; positions 16 and 24; positions 16 and 30; positions 24 and 30; Corresponding sites can be mentioned.
- the site at which an amino acid is substituted with a glycosylated amino acid is, for example, SEQ ID NO: 1 from the viewpoint of the ability to synthesize cAMP among the GLP-1 activities of glycosylated antigenic GLP-1 analogs.
- a site corresponding to one or more sites selected from positions 16, 20, 21, 24, 28, 30 and 32 ( addition of a glycosylated amino acid to the 31st amino acid) of the GLP-1 peptide described in 1.
- a site corresponding to one or more sites selected from positions 16, 20, 24, 28, 30 and 32 is preferably a site corresponding to one or more sites selected from positions 16, 20, 24, 28, 30 and 32.
- the site at which an amino acid is substituted with a glycosylated amino acid is one or more selected from sites other than positions 2, 3, and 6 of GLP-1 consisting of the amino acid sequence set forth in SEQ ID NO: 1. It is a part.
- the site at which an amino acid is substituted with a glycosylated amino acid is one or more sites selected from sites other than positions 1, 4, 7, 9, 13, 15, and 23 of GLP-1, One or more sites selected from sites other than positions 1, 4, and 9.
- the site at which an amino acid is substituted with a glycosylated amino acid can also be determined from the binding site of GLP-1 to the GLP-1 receptor.
- any combination of the above can be adopted as the site where amino acids are substituted with glycosylated amino acids. It is not limited. For example, a combination wherein one site is selected from the above preferred sites and the other site is selected from any site of the antigenic GLP-1 analog; one site is selected from the above preferred sites and the other site is Combinations selected from arbitrary sites of one or several amino acids further added to the C-terminus of the antigenic GLP-1 analog are also included in a preferred embodiment of the present invention.
- the site where deletion, substitution or addition of amino acids other than glycosylated amino acids occurs is 1, 4, 7, 9, 13 of GLP-1 consisting of the amino acid sequence set forth in SEQ ID NO: 1.
- one or more sites selected from sites other than positions 15, 22, and 23, for example, one or more sites selected from sites other than positions 1, 4, 9 and 22 (Structure-Activity Players of Glucagon-like Peptide-l, THE JOURNAL OF BIOLOGICAL CHEMISTRY Vol.269, No.9, Issue of March 4, pp. 6276-6278.1994).
- glycosylated antigenic GLP-1 analog of the present invention examples include those obtained by adding a sugar chain to exendin-4 having the following amino acid sequence.
- the glycosylated exendin-4 is represented, for example, by the following general formula (1).
- Xaa 14 represents Met, glycosylated Cys, or glycosylated Asn.
- Xaa 16 represents Glu, glycosylated Cys, or glycosylated Asn.
- Xaa 20 represents Arg, glycosylated Cys, or glycosylated Asn.
- Xaa 24 represents Glu, glycosylated Cys, or glycosylated Asn.
- Xaa 28 represents Asn, glycosylated Cys, or glycosylated Asn.
- Xaa 30 represents Gly, glycosylated Cys, or glycosylated Asn.
- At least one of Xaa 12 , Xaa 14 , Xaa 16 , Xaa 20 , Xaa 24 , Xaa 28 and Xaa 30 is glycosylated Cys or glycosylated Asn. ] (SEQ ID NO: 4) Among these, it is preferable that Xaa 24 is a glycosylated Cys.
- glycosylated antigenic GLP-1 analog of the present invention examples include those obtained by adding a sugar chain to liraglutide having the following amino acid sequence. His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys 20 -Glu-Phe-Ile-Ala-Trp -Leu-Val-Arg-Gly-Arg-Gly (SEQ ID NO: 3)
- a palmitoyl group is bonded to Lys 20 via glutamic acid.
- the sugar chain-added liraglutide is represented, for example, by the following general formula (2).
- General formula (2) His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Xaa 12 -Tyr-Xaa 14 -Glu-Xaa 16 -Gln-Ala-Ala-Lys 20 -Glu-Phe-Ile- Xaa 24 -Trp-Leu-Val-Xaa 28 -Gly-Xaa 30 -Gly [Wherein Xaa 12 represents Ser, glycosylated Cys, or glycosylated Asn. Xaa 14 represents Leu, glycosylated Cys, or glycosylated Asn.
- Xaa 16 represents Gly, glycosylated Cys, or glycosylated Asn.
- Xaa 24 represents Ala, glycosylated Cys, or glycosylated Asn.
- Xaa 28 represents Arg, glycosylated Cys, or glycosylated Asn.
- Xaa 30 represents Arg, glycosylated Cys, or glycosylated Asn.
- At least one of Xaa 12 , Xaa 14 , Xaa 16 , Xaa 24 , Xaa 28 and Xaa 30 is glycosylated Cys or glycosylated Asn.
- Xaa 24 and / or Xaa 30 are sugar chain addition Cys or sugar chain addition Asn, and it is especially preferable that Xaa 30 is sugar chain addition Cys.
- glycosylated antigenic GLP-1 analog of the present invention examples include those obtained by adding a sugar chain to BIM51077 having the following amino acid sequence. His-R2-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys-Glu-Phe-Ile-Ala-Trp- Leu-Val-Lys-R2-Arg-NH 2 [Wherein R2 represents ⁇ -methylalanine (also referred to as aminoisobutanoic acid, Aib). ] (SEQ ID NO: 18) Sugar chain addition BIM51077 is represented by the following general formula (3), for example.
- Xaa 22 represents Gly, glycosylated Cys, or glycosylated Asn.
- Xaa 26 represents Lys, sugar chain addition Cys, sugar chain addition Asn, or sugar chain addition Lys.
- Xaa 30 represents Ala, glycosylated Cys, or glycosylated Asn.
- Xaa 34 represents Lys, sugar chain addition Cys, sugar chain addition Asn, or sugar chain addition Lys.
- Xaa 36 represents Arg, glycosylated Cys, or glycosylated Asn.
- At least one of Xaa 18 , Xaa 20 , Xaa 22 , Xaa 26 , Xaa 30 , Xaa 34 and Xaa 36 is glycosylated Cys or glycosylated Asn. ] (SEQ ID NO: 19)
- sugar chain refers to a compound formed by connecting one or more unit sugars (monosaccharide and / or a derivative thereof). When two or more unit sugars are connected, each unit sugar is bound by dehydration condensation by a glycosidic bond.
- sugar chains include monosaccharides and polysaccharides (glucose, galactose, mannose, fucose, xylose, N-acetylglucosamine, N-acetylgalactosamine, sialic acid, and complexes thereof contained in the living body.
- sugar chains that are decomposed or derived from complex biomolecules such as degraded polysaccharides, glycoproteins, proteoglycans, glycosaminoglycans, glycolipids, and the like, but are not limited thereto.
- the sugar chain may be linear or branched.
- sugar chain also includes sugar chain derivatives.
- sugar chain derivatives include sugars having a carboxyl group (for example, the C-1 position). Oxidized to carboxylic acid to produce aldonic acid (for example, D-glucose oxidized D-gluconic acid), terminal C atom to carboxylic acid uronic acid (D-glucose oxidized D-glucuron) Acid)), amino groups or sugars having amino group derivatives (for example, acetylated amino groups) (for example, N-acetyl-D-glucosamine, N-acetyl-D-galactosamine, etc.), amino groups and carboxyl groups (Eg, N-acetylneuraminic acid (sialic acid), N-acetylmuramic acid, etc.), deoxygenated sugar (eg, 2-deoxy-D-ribone) ), Sulfated sugar including a sulfuric acid group, including but sugar chains are such phosphorylated sugar
- the antigenic GLP-1 analog when a preferred sugar chain is added to an antigenic GLP-1 analog (when substituted with an amino acid of the antigenic GLP-1 analog in the form of a glycosylated amino acid), the antigenic GLP-1 analog Is a sugar chain that reduces the antigenicity of the glycine, preferably increases blood stability, and more preferably does not lose the blood glucose level suppressing activity. However, as long as the antigenicity is lowered, the blood stability and / or blood glucose level suppressing activity may be equivalent to those of the antigenic GLP-1 analog.
- the sugar chain in the glycosylated antigenic GLP-1 analog of the present invention is not particularly limited, and is a sugar chain that exists as a complex carbohydrate (glycopeptide (or glycoprotein), proteoglycan, glycolipid, etc.) in vivo. Alternatively, it may be a sugar chain that does not exist as a complex carbohydrate in vivo.
- a sugar chain that exists as a complex carbohydrate in vivo is preferable from the viewpoint that the glycosylated antigenic GLP-1 analog of the present invention is administered to a living body.
- sugar chains include N-linked sugar chains and O-linked sugar chains that are sugar chains bound to peptides (or proteins) as glycopeptides (or glycoproteins) in vivo.
- an N-linked sugar chain is used.
- the N-linked sugar chain include a high mannose type, a complex type, and a hybrid type, and a complex type is particularly preferable.
- the antigen in the glycosylated antigenic GLP-1 analog of the present invention, even if the sugar chain is a sugar chain that exists as a complex carbohydrate in the living body, the antigen can be obtained by a method other than the O-linked type and N-linked type It may be bound to a sex GLP-1 analog.
- those having a sugar chain bound to Cys or the like via a linker are also included in the glycosylated antigenic GLP-1 analog of the present invention.
- the sugar chain in the glycosylated antigenic GLP-1 analog of the present invention is a saccharide comprising 4 or more, for example, 5 or more, 7 or more, particularly 9 or more, 11 or more saccharides. A chain is preferred.
- the sugar chain in the glycosylated antigenic GLP-1 analog of the present invention is a sugar chain composed of 5 to 11, 9 to 11, 9 and 11 sugars.
- the sugar chain in the glycosylated antigenic GLP-1 analog of the present invention is a double-chain complex sugar chain.
- the complex-type sugar chain includes two or more types of monosaccharides and has a basic structure shown below and a lactosamine structure represented by Gal ⁇ 1-4GlcNAc.
- the double-stranded complex type sugar chain refers to one in which a single-chain sugar chain composed of 0 to 3 sugars is bonded to two mannoses at the ends of the basic structure.
- Examples of the double-stranded complex type sugar chain include the following diasial sugar chain, Monosialo sugar chain, Asialo sugar chain, Ziglucnac sugar chain, Dimannose sugar chain, And the like, more preferably a disialo sugar chain, a monosialo sugar chain or an asialo sugar chain.
- disialo sugar chain “monosialo sugar chain”, “asialo sugar chain”, “diglucnac sugar chain”, and “dimannose sugar chain” are represented by the above chemical formulas. Examples having different binding modes from the examples are also included, and such sugar chains are also preferably used as the sugar chains of the present invention. Examples of such sugar chains include those in which sialic acid and galactose are linked by an ( ⁇ 2 ⁇ 3) bond in a dicialo sugar chain or an asialog sugar chain.
- the high mannose type sugar chain used in the present invention is a sugar chain in which two or more mannoses are further bonded to the basic structure of the complex type sugar chain described above. Since the high mannose type sugar chain is bulky, the stability in blood can be further increased by binding the high mannose type sugar chain to the peptide.
- a sugar chain containing 5 to 9 mannose is preferable like a mammalian high mannose sugar chain, but may be a sugar chain containing more mannose like a high mannose sugar chain of yeast.
- the high mannose type sugar chain preferably used in the present invention, for example, Highman North-5 (M-5) Highman North-9 (M-9) Etc.
- preferable sugar chains include, for example, sugar chains existing as glycoproteins bound to proteins in the human body (for example, sugar chains described in “FEBS LETTERS Vol. 50, No. 3, Feb. 1975”). ) And a sugar chain having the same structure (a sugar chain having the same kind of constituent sugars and their coupling mode) or a sugar chain from which one or more sugars have been lost from the non-reducing end thereof. 5 can be mentioned.
- the structure of the sugar chain in the glycopeptide of the present invention is uniform.
- the structure of a sugar chain in a glycopeptide is uniform when compared between glycopeptides, the sugar chain addition site in the peptide, the type of each sugar constituting the sugar chain, the binding order, and This means that the sugars are bonded in the same manner, and the sugar chain structure is at least 90% or higher, preferably 95% or higher, more preferably 99% or higher.
- a glycopeptide having a uniform sugar chain has a constant quality and is particularly preferred in the fields of pharmaceutical production and assay.
- the uniform sugar chain ratio can be measured, for example, by a method using HPLC, capillary electrophoresis, NMR, mass spectrometry or the like.
- a preferred glycosylated antigenic GLP-1 analog is, for example, the glycosylated antigenic GLP-1 analog produced in Examples 1 to 4 described later.
- the glycosylated antigenic GLP-1 analog of the present invention can be produced by incorporating a glycosylation step into a peptide synthesis method known to those skilled in the art.
- a method utilizing the reverse reaction of the enzyme, represented by transglutaminase can also be used.
- transglutaminase a method utilizing the reverse reaction of the enzyme, represented by transglutaminase.
- a large amount of sugar chain to be added is required, and purification after the final step is complicated.
- it can be used for small-scale synthesis for assays, etc., but for large-scale production such as pharmaceutical production. It may not be a practical method.
- WO03 / 008431 pamphlet (US2004181054 (A1)), WO2004 / 058984 pamphlet (US2006228784 (A1)), WO 2004/058824 pamphlet (US 2006009421 (A1)), WO 2004/070046 pamphlet (US 2006205039 (A1)), WO 2007/011055 pamphlet and the like, the disclosure of which is incorporated herein by reference in its entirety. It is.
- the glycosylated antigen GLP-1 analog can be produced, for example, by solid phase synthesis using a glycosylated asparagine as outlined below.
- the hydroxyl group of a resin having a hydroxyl group (resin) is esterified with the carboxyl group of an amino acid whose amino group nitrogen is protected with a lipophilic protecting group.
- the amino group nitrogen of the amino acid is protected with a fat-soluble protecting group, self-condensation between amino acids is prevented, and esterification occurs due to the reaction between the hydroxyl group of the resin and the carboxyl group of the amino acid.
- a sugar chain-added asparagine in which the amino group nitrogen is protected with a fat-soluble protecting group is used, and the carboxyl group of the asparagine moiety is used.
- step (6) is performed to obtain a peptide having a glycosylated asparagine at the N-terminus. it can.
- any resin (resin) having a hydroxyl group usually used in solid phase synthesis may be used.
- Amino-PEGA resin manufactured by Merck
- Wang resin manufactured by Merck
- HMPA-PEGA resin manufactured by Merck
- Rink-Amido-PEGA resin manufactured by Merck
- amino acids all amino acids can be used.
- natural amino acids such as serine (Ser), asparagine (Asn), valine (Val), leucine (Leu), isoleucine (Ile), alanine (Ala), tyrosine (Tyr), glycine (Gly), lysine (Lys), arginine (Arg), histidine (His), aspartic acid (Asp), glutamic acid (Glu), glutamine (Gln), threonine (Thr), cysteine (Cys), Examples include methionine (Met), phenylalanine (Phe), tryptophan (Trp), and proline (Pro).
- the fat-soluble protective group examples include carbonate-based or amide groups such as 9-fluorenylmethoxycarbonyl (Fmoc) group, t-butyloxycarbonyl (Boc) group, benzyl group, allyl group, allyloxycarbonyl group, and acetyl group.
- Protecting groups of the system can be mentioned.
- a fat-soluble protecting group into an amino acid, for example, when introducing an Fmoc group, it can be introduced by adding 9-fluorenylmethyl-N-succinimidyl carbonate and sodium hydrogen carbonate to carry out the reaction. The reaction is carried out at 0 to 50 ° C., preferably at room temperature, for about 1 to 5 hours.
- amino acids can also be used as the amino acid protected with a fat-soluble protecting group.
- Fmoc-Ser Fmoc-Asn, Fmoc-Val, Fmoc-Leu, Fmoc-Ile, Fmoc-AIa, Fmoc-Tyr, Fmoc-Gly, Fmoc-Lys, Fmoc-Arg, Fmoc-His, Fmoc-His
- Fmoc-Glu Fmoc-Gln, Fmoc-Thr, Fmoc-Cys, Fmoc-Met, Fmoc-Phe, Fmoc-Trp, and Fmoc-Pro.
- dehydration condensing agents such as 1-mesitylenesulfonyl-3-nitro-1,2,4-triazole (MSNT), dicyclohexylcarbodiimide (DCC), diisopropylcarbodiimide (DIPCDI), and the like can be used.
- MSNT 1-mesitylenesulfonyl-3-nitro-1,2,4-triazole
- DCC dicyclohexylcarbodiimide
- DIPCDI diisopropylcarbodiimide
- the use ratio of the amino acid and the dehydration condensing agent is usually 1 to 10 parts by weight, preferably 2 to 5 parts by weight, with respect to 1 part by weight of the former.
- the esterification reaction is preferably performed, for example, by placing a resin in a solid phase column, washing the resin with a solvent, and then adding an amino acid solution.
- the cleaning solvent include dimethylformamide (DMF), 2-propanol, methylene chloride and the like.
- the solvent that dissolves amino acids include dimethyl sulfoxide (DMSO), DMF, and methylene chloride.
- the esterification reaction is carried out at 0 to 50 ° C., preferably at room temperature, for about 10 minutes to 30 hours, preferably about 15 minutes to 24 hours.
- the elimination of the lipophilic protecting group can be carried out, for example, by treatment with a base.
- a base include piperidine and morpholine.
- a solvent examples include DMSO, DMF, methanol and the like.
- amidation reaction between the free amino group and the carboxyl group of any amino acid whose amino group nitrogen is protected with a fat-soluble protecting group is preferably performed in the presence of an activator and a solvent.
- activator examples include dicyclohexylcarbodiimide (DCC), 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride (WSC / HCl), diphenylphosphoryl azide (DPPA), carbonyldiimidazole (CDI).
- DCC dicyclohexylcarbodiimide
- WSC / HCl 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride
- DPPA diphenylphosphoryl azide
- CDI carbonyldiimidazole
- Diethyl cyanophosphonate (DEPC), benzotriazol-1-yloxy-trispyrrolidinophosphonium (DIPCI), benzotriazol-1-yloxy-trispyrrolidinophosphonium hexafluorophosphate (PyBOP), 1-hydroxybenzotriazole (HOBt), Hydroxysuccinimide (HOSu), dimethylaminopyridine (DMAP), 1-hydroxy-7-azabenzotriazole (HOAt), hydroxyphthalimide (HOP) t), pentafluorophenol (Pfp-OH), 2- (1H-benzotriazol-1-yl) -1,1,3,3-tetramethyluronium hexafluorophosphate (HBTU), O- (7-aza Benzotriazol-1-yl) -1,1,3,3-tetramethyluronium hexafluorophosphonate (HATU), O-benzotriazol-1-yl-1,1,3,3-
- the activator is used in an amount of 1 to 20 equivalents, preferably 1 to 10 equivalents, more preferably 1 to 5 equivalents with respect to any amino acid in which the amino group nitrogen is protected with a fat-soluble protecting group. Is preferred.
- the solvent examples include DMSO, DMF, methylene chloride and the like.
- the reaction is carried out at 0 to 50 ° C., preferably at room temperature, for about 10 to 30 hours, preferably about 15 minutes to 24 hours.
- the elimination of the lipophilic protecting group can be carried out in the same manner as described above.
- the acid include trifluoroacetic acid (TFA) and hydrogen fluoride (HF).
- glycosylated antigenic GLP-1 analog in which a desired position is substituted with glycosylated asparagine can be obtained.
- the glycosylated antigenic GLP-1 analog can also be produced by a method in which a peptide chain is first synthesized and a sugar chain is added later. Specifically, a peptide containing Cys at the position where a sugar chain is to be added is produced by a solid phase synthesis method, a liquid phase synthesis method, a method of synthesizing with a cell, a method of separating and extracting naturally occurring ones, and the like. Next, the haloacetamide-conjugated complex sugar chain derivative is reacted with the peptide containing Cys obtained above to bind the sugar chain to the peptide.
- the above reaction is usually carried out at 0 to 80 ° C., preferably 10 to 60 ° C., more preferably 15 to 35 ° C.
- the reaction time is preferably about 30 minutes to 5 hours.
- HPLC high performance liquid column chromatography
- the haloacetamide-conjugated glycan derivative is, for example, a hydroxyl group bonded to the 1-position carbon of the conjugated asparagine-linked glycan, represented by —NH— (CO) — (CH 2 ) a —CH 2 X (X is The halogen atom, a is an integer, and is not limited as long as the desired linker function is not inhibited, but preferably represents an integer of 0 to 4.
- a haloacetamide-conjugated complex sugar chain derivative and a Cys-containing peptide are reacted in a phosphate buffer at room temperature. After completion of the reaction, a glycosylated antigenic GLP-1 analog substituted with glycosylated Cys can be obtained by purification with HPLC.
- a step of adding a fatty acid to a Lys residue is performed.
- This step can be performed, for example, by reacting Pal-Glu (OBu) -OSu with a peptide containing Lys.
- the fatty acid addition step may be performed before or after the sugar chain addition step.
- Method C For example, a glycosylated amino acid is dissolved in a DMSO solution, and a DMSO solution in which glutaric acid-EDC is mixed is added to this solution, followed by stirring at room temperature for 1 day.
- the reaction mixture is appropriately diluted and then fractionated by molecular weight exclusion gel chromatography or the like, whereby a glycosylated amino acid in which glutaric acid is bound to the ⁇ -amino group can be obtained.
- a DMSO solution of N-hydroxysuccinimide and a DMSO solution of EDC are added to a DMSO solution of a glutaric acid-linked glycosylated amino acid, and the mixture is stirred at room temperature for 6 hours.
- N-hydroxysuccinimidyl ester of a glycosylated amino acid can be synthesized.
- the glycosylated antigenic GLP-1 analog of the present invention has GLP-1 activity.
- the glycosylated antigenic GLP-1 analog of the present invention preferably has a GLP-1 activity equal to or higher than that of natural GLP-1, and more preferably, an antigenic GLP-1 having no sugar chain added thereto. Compared with one analog (hereinafter sometimes referred to as “non-glycosylated antigenic GLP-1 analog”), it has an equivalent or higher GLP-1 activity.
- GLP-1 activity refers to a part or all of a known physiological activity of GLP-1.
- GLP-1 has, in addition to blood glucose level inhibitory action, for example, insulin secretion associated with cAMP synthesis induction, islet protection (inhibition of apoptosis), islet proliferation, and extrapancreatic action include appetite suppression, gastrointestinal motility suppression, calcitonin It is known to have secretion enhancement, cardioprotective action during ischemia, and the like. Therefore, GLP-1 activity refers to all or part of the physiological activity related to these actions, and can be measured using techniques known to those skilled in the art.
- the blood glucose level inhibitory activity is the measurement of the blood glucose level lowering effect in diabetic mice (db / db mice) and the blood glucose level increase inhibitory activity in the oral glucose tolerance test (OGTT: Oral Glucose Tolerance Test). It can measure using the measurement of this.
- blood glucose level suppression includes both concepts of suppressing an increase in blood glucose level and lowering the blood glucose level.
- the blood glucose level inhibitory action in db / db mice may be referred to as “blood glucose level lowering action”
- the blood glucose level inhibitory action in OGTT may be referred to as “blood sugar level rise inhibitory action”.
- the blood glucose level inhibitory activity by OGTT can be determined by measuring the suppression of an increase in blood glucose level when a mouse is forced to drink sugar. For example, first, a test compound is administered to a mouse fasted overnight, and a glucose solution is orally administered 30 minutes later. Glucose administration increases the blood glucose level in mice, reaches a maximum about 30 minutes after administration, and gradually decreases. The blood glucose level of 30 minutes after glucose administration is measured, and compared with the blood glucose level in the case of non-glycosylated antigenic GLP-1 analog administration, the blood glucose level inhibitory action of glycosylated antigenic GLP-1 analog is evaluated can do.
- the strength of blood glucose level inhibitory activity of the glycosylated antigenic GLP-1 analog of the present invention is evaluated by comparing doses when the same level of blood glucose level inhibitory action is confirmed in OGTT. Can do. For example, when the same blood glucose level inhibitory effect is obtained when 10 non-glycosylated antigenic GLP-1 analogs are administered and when 1 glycosylated antigenic GLP-1 analog is administered, The blood glucose level inhibitory activity of GLP-1 analog is 10 times that of non-glycosylated antigenic GLP-1 analog.
- the blood glucose level inhibitory activity using db / db mice can be determined by measuring the blood glucose level after administering the test compound to diabetic mice.
- the blood glucose level after administration of the test compound is measured over time. For example, if the blood glucose level for 120 minutes after administration is lower than that at the time of administration, the blood glucose level lowering effect can be confirmed. Further, for example, by measuring the blood glucose level for 300 minutes after administration, the persistence of the blood glucose level lowering action can also be determined.
- insulin secretion activity in GLP-1 activity can be measured using an in vitro cAMP synthesis ability test or the like.
- GLP-1 increases intracellular cAMP concentration by binding to the GLP-1 receptor, and promotes insulin secretion. Therefore, for example, mouse GLP-1 receptor-expressing CHO-K1 cells are stimulated with a glycosylated antigenic GLP-1 analog, the amount of cAMP synthesized in the cells is measured, and the EC50 value is determined as non-glycosylated antigenicity. By comparing with the GLP-1 analog, the insulinotropic activity of the glycosylated antigenic GLP-1 analog can be evaluated.
- the blood stability of the glycosylated antigenic GLP-1 analog of the present invention is preferably equivalent to or higher than that of natural GLP-1, and more preferably equivalent to non-glycosylated antigenic GLP-1 analog. Or more. Blood stability can be measured using methods known to those skilled in the art. For example, stability in plasma and resistance to DPP-IV (dipeptidyl peptidase IV) are measured, half-life, AUC (drug The blood concentration-area under the time curve) can be used as an index. Moreover, an increase in renal clearance also contributes to an increase in blood stability.
- the stability of the glycosylated antigenic GLP-1 analog of the present invention in plasma is preferably equivalent to or higher than that of natural GLP-1, more preferably equivalent to that of non-glycosylated antigenic GLP-1 analog. Or more.
- Resistance to DPP-IV can be determined, for example, by measuring half-life in a DPP-IV solution.
- the glycosylated antigenic GLP-1 analog of the present invention has equivalent or better resistance to DPP-IV than the non-glycosylated antigenic GLP-1 analog.
- the glycosylated antigenic GLP-1 analog of the present invention preferably has a blood half-life of preferably at least 1 hour, more preferably at least 3, 5, 7, 10, 15, 20 hours and even more preferably at least 24 hours.
- the glycosylated antigenic GLP-1 analog of the present invention has a reduced antigenicity compared to the non-glycosylated antigenic GLP-1 analog.
- the decrease in antigenicity can be achieved, for example, by sensitizing a mouse with a glycosylated antigenic GLP-1 analog or a non-glycosylated antigenic GLP-1 analog, and determining the anti-GLP-1 analog antibody titer in the blood of each mouse. It can be evaluated by measuring and comparing.
- the antigenicity of the glycosylated antigenic GLP-1 analog of the present invention is preferably about one half or less, more preferably about one third or less, compared to the non-glycosylated antigenic GLP-1 analog. More preferably, it is reduced to about 1/4.
- the pharmaceutical composition containing the glycosylated antigenic GLP-1 analog of the present invention as an active ingredient is effective for the treatment or prevention of diseases associated with GLP-1.
- GLP-1 is known to have various actions, and there are various diseases associated with these actions.
- GLP-1 has been found to cause glucose uptake by cells and a decrease in blood glucose levels by stimulating insulin release. It has also been found to suppress stomach and / or intestinal motility, suppress stomach and / or intestinal content excretion, and suppress food intake.
- diseases associated with GLP-1 include, for example, non-insulin dependent diabetes mellitus (NIDDM), insulin dependent diabetes mellitus, stroke (see International Publication No. WO00 / 16797 by Efendic), myocardial infarction (by Efendic) International Publication No. WO 98/08531), obesity (see International Publication No. WO 98/19698 by Efendic), functional dyspepsia, irritable bowel syndrome (International Publication No. WO 99/64060 by Efendic) (See brochure), including islet transplantation.
- the pharmaceutical composition containing the glycosylated antigenic GLP-1 analog of the present invention as an active ingredient is particularly effective for the treatment or prevention of diabetes, and more specifically, prevention of type 1 diabetes and treatment of type 2 diabetes. It is effective for.
- the above pharmaceutical composition is a normal pharmaceutical composition using diluents or excipients such as fillers, extenders, binders, moisturizers, disintegrants, surfactants, lubricants and the like that are usually used. It was formulated in the form of Examples of such a pharmaceutical composition include tablets, pills, powders, solutions, suspensions, emulsions, granules, capsules, suppositories, injections, and the like.
- the amount of the glycosylated antigenic GLP-1 analog of the present invention contained in the pharmaceutical composition is not particularly limited and can be appropriately selected from a wide range. It is preferable to contain 1 to 70% by weight of the glycosylated antigenic GLP-1 analog.
- the pharmaceutical composition containing the glycosylated antigenic GLP-1 analog of the present invention as an active ingredient can further contain other active ingredients, or is used in combination with a pharmaceutical composition containing other active ingredients. You can also The pharmaceutical composition containing the glycosylated antigenic GLP-1 analog of the present invention as an active ingredient may further contain one or more different glycosylated antigenic GLP-1 analogs of the present invention as an active ingredient. It can also be used in combination with a pharmaceutical composition containing one or more different glycosylated antigenic GLP-1 analogs of the present invention as active ingredients.
- the administration method of the pharmaceutical composition according to the present invention is not particularly limited, and it is administered by a method according to various preparation forms, patient age, sex, disease state, and other conditions.
- Examples of the administration method in the case of tablets, pills, liquids, suspensions, emulsions, granules and capsules include oral administration.
- it can be administered intravenously, intramuscularly, intradermally, subcutaneously or intraperitoneally alone or mixed with a normal fluid such as glucose or amino acid.
- a suppository it is administered intrarectally.
- the dosage of the above pharmaceutical composition may be appropriately selected according to the usage, patient age, sex, disease severity, and other conditions.
- the glycosylated antigenic GLP- of the present invention per 1 kg body weight is used.
- the dosage is such that one analog is 0.1 to 900 nmol, preferably 1 to 90 nmol. Since the glycosylated antigenic GLP-1 analog of the present invention is less antigenic than the non-glycosylated antigenic GLP-1 analog, it is relatively safe even when the dose is increased.
- the number of administrations of the pharmaceutical composition may be appropriately selected according to usage, patient age, sex, disease severity, and other conditions. For example, 3 times / 1 day, 2 times / 1 day, 1 time / A less frequent number of administrations (for example, once / week, once / month, etc.) may be selected depending on the stability of the blood in one day.
- the frequency of administration of the pharmaceutical composition is not more than once / day.
- the sugar chain added to the glycosylated antigenic GLP-1 analog of the present invention is easily degraded in the metabolic system in the body.
- the sugar chain has a structure that exists as a glycopeptide (or glycoprotein) in vivo. Therefore, the pharmaceutical composition containing the glycosylated antigenic GLP-1 analog of the present invention and the peptide as an active ingredient does not show any side effects or antigenicity even when administered in vivo, and allergic reaction or antibody production It has the advantage that there is little worry that the medicinal effect cannot be obtained.
- the glycosylated antigenic GLP-1 analog of the present invention can be stably and easily supplied in large quantities, and is very useful from the viewpoint of providing a high-quality pharmaceutical product with stable quality. is there.
- the present invention also provides a method for treating or preventing a disease associated with GLP-1, which comprises administering an effective amount of the glycosylated antigenic GLP-1 analog of the present invention.
- Embodiments of the present invention may be described with reference to schematic diagrams, but in the case of schematic diagrams, they may be exaggerated for clarity of explanation.
- terms such as first, second, etc. are used to represent various elements, it is understood that these elements should not be limited by those terms. These terms are only used to distinguish one element from another, for example, the first element is referred to as the second element, and similarly, the second element is the first element. Can be made without departing from the scope of the present invention.
- Example 1 Synthesis Method of Position 30 Cys-Disialoglycosylated Exendin-4 (SEQ ID NO: 6) Ex-4 (SEQ ID NO: 10; Ex-4 shown in SEQ ID NO: 2 ) synthesized according to Synthesis Example 1 described later 12.0 mg of a 39-residue peptide in which Gly at position 30 of the amino acid sequence of the above is substituted with Cys) and 36 mg of a bromoacetylated disialo sugar chain (manufactured by Otsuka Chemical Co., Ltd.) represented by the following formula (a) The reaction was carried out at 37 ° C.
- Example 2 Synthesis Method of Position 30 Cys-High Mannose-5 Type Glycosylated Exendin-4 (SEQ ID NO: 7) Ex-4 (SEQ ID NO: 10; SEQ ID NO: 2 ) synthesized by Synthesis Example 1 described later 1.2 mg of a 39-residue peptide in which Gly at position 30 of the amino acid sequence of Ex-4 shown is substituted with Cys) and the bromoacetylated M5 sugar synthesized in Synthesis Example 2 described later 3.9 mg of chain was reacted at 37 ° C. for 3 hours in 0.17 mL of 35 mM sodium phosphate buffer pH 7.4, 1 mM triscarboxyethylphosphine.
- Fmoc-Gly (0.50 mmol), MSNT (0.50 mmol) and N-methylimidazole (0.375 mmol) were dissolved in DCM (2 ml), placed in a column for solid phase synthesis, and stirred at 25 ° C. for 3 hours. .
- Synthesis Example 2 Synthesis Method of Bromoacetylated M5 Sugar Chain 100 g of soybean powder was washed twice with 500 ml of acetone and twice with 500 ml of methanol to obtain 61.4 g of defatted soybean powder. To 43.0 g of the obtained defatted soybean powder, 430 ml of water and 4.3 g of liquefied enzyme T (manufactured by HBI) were added and reacted at 70 ° C. for 19 hours with stirring. The reaction solution was centrifuged (10000 G, 10 minutes) to separate into a supernatant and a precipitate, and 800 ml of the supernatant was obtained.
- the solution after the reaction was filtered to remove insoluble matters, and the solution was concentrated by a rotary evaporator until the liquid volume became 400 ml.
- the obtained liquid was subjected to ultrafiltration using an ultrafiltration membrane having a molecular weight cut off of 1K (manufactured by Minimate TFF Capsule 1K membrane Paul). After 6 hours of treatment, 230 ml of liquid that did not permeate the membrane was recovered. 20 ml of 1M Tris-HCl buffer pH 8.0, 250 mg of sodium azide, and 423.5 mg of actinase E (manufactured by Kaken Pharmaceutical Co., Ltd.) were added to the collected liquid and reacted at 37 ° C. for 82 hours.
- the reaction solution was filtered to remove insolubles, and then concentrated with a rotary evaporator until the liquid volume reached 100 ml.
- the concentrated solution was divided into two halves and fractionated on a Sephadex-G25 ( ⁇ 25 mm ⁇ 100 mm) column, and only the sugar chain-containing fractions were collected and concentrated to obtain 2.22 g.
- Distilled water (21.0 ml) and ethanol (14.9 ml) were added to the resulting sugar chain-containing fraction to dissolve, and sodium hydrogen carbonate (1.13 g) and Fmoc-OSu (2.02 g) were added and reacted at room temperature for 16 hours.
- Fmoc-Arg Pbf
- Fmoc-Aminoisobutyric Acid Aib
- Fmoc-Lys Boc
- Fmoc-Val Fmoc-Leu
- Fmoc-Trp Boc
- Fmoc-Trp Boc
- Fmoc-Trp Boc
- Fmoc-Trp Boc
- Fmoc-Trp Boc) -Ile
- Fmoc-Phe Fmoc-Glu (OtBu), Fmoc-Cys (Trt), Fmoc-Ala, Fmoc-Ala, Fmoc-Gln (Trt), Fmoc-Gly, Fmoc-Glu (OtBu), Fmoc-Lu , Fmoc-Tyr (tBu), Fmoc-Ser (tBu), Fmoc-Ser (tBu), Fmoc
- Example 1 Confirmation of Antigen Decreasing Action of Exendin-4 by Glycosylation Mice were sensitized with non-glycosylated exendin-4 or 30-position Cys-dicialoglycosylated exendin-4 to prevent By comparing the concentrations of exendin-4 antibody, the effect of glycosylation on the antigenicity of exendin was verified.
- the 30-position Cys-dicialo-glycosylated exendin-4 and non-glycosylated exendin-4 (American Peptide Company) synthesized in Example 1 were sufficiently combined with Complete Freund's adjuvant (Difco Laboratories).
- the mixture was mixed into an emulsion and administered intraperitoneally to balb / c mice (female, 7 weeks old).
- Plasma was collected from mice 7 days after boost.
- the concentration of anti-exendin-4 antibody in plasma was measured by Enzyme-Linked Immunosorbent Assay (ELISA) using a commercially available anti-exendin-4 antibody (Antibodydy) as a standard product.
- ELISA Enzyme-Linked Immunosorbent Assay
- Antibody production was strongly induced in mice immunized with glycosylated non-glycosylated exendin-4, and its plasma concentration was 707 ⁇ 68.2 mg / mL.
- the anti-exendin-4 antibody concentration in the plasma of mice immunized with position 30-Cys-dicialoglycosylated exendin-4 was about 4 minutes compared to immunization with non-glycosylated exendin-4 1 (178.8 ⁇ 22.3 mg / mL), and showed a significant antigenicity-reducing effect (p ⁇ 0.001, Student's t-test).
- Test Example 3 Confirmation of Blood Glucose Level Reduction Effect of Glycosylated Exendin-4 Using db / db Mice 30th Position Cys-Disialo Glycosylated Exendin-4 Synthesized in Example 1 in PBS (9 nmol / 10 mL) , BKS. Cg ⁇ + Leprdb / + Leprdb / Jcl mice (10 weeks old, male) were administered intraperitoneally at a dose of 10 mL / kg. Orbital blood collection was performed 30 minutes, 60 minutes, 120 minutes, and 240 minutes before compound administration, and blood glucose levels were measured using Accu Check Aviva (Roche Diagnostics).
- Non-glycosylated exendin-4 was highly stable in blood, showed a strong blood glucose lowering effect 30 minutes after administration, and the effect persisted until 240 minutes.
- Cys-dicialo-glycosylated exendin-4 at position 30 shows a blood glucose level lowering action and persistence equivalent to non-glycosylated exendin-4, and the effect of glycosylation on the amino acid at position 30 of exendin-4 was not detected.
- Test Example 4 Oral Glucose Tolerance Test (OGTT: Oral Glucose Tolerance Test) A 30-position Cys-dicialoglycosylated liraglutide produced in Example 4, GLP-1 produced in Comparative Example 2 or a liraglutide produced in Comparative Example 3 in PBS (9 nmol / 10 ml), or PBS solution was fasted overnight. C57BL / 6JJcl mice (10 weeks old, male) were intraperitoneally administered at a dose of 10 ml / kg. After 30 minutes, the glucose solution was orally administered at a dose of 1 mg / g.
- OGTT Oral Glucose Tolerance Test
- Orbital blood collection was performed before glucose administration, 30 minutes, 60 minutes, and 120 minutes after glucose administration, and blood glucose level was measured using Accu Check Aviva (Roche Diagnostics). The results are shown in FIG. Both the 30-position Cys-disialoglycosylated liraglutide and the non-glycosylated liraglutide exhibited higher blood glucose elevation-inhibiting action than Vehicle (PBS only) and GLP-1, but the 30-position Cys-disialoglycosylated liraglutide was non-glycosylated. Compared with sugar chain-added liraglutide, it exhibited a higher blood glucose level inhibitory action.
- Orbital blood collection was performed 30 minutes, 60 minutes, 120 minutes, 240 minutes, 480 minutes, and 720 minutes before compound administration, and blood glucose levels were measured using Accu Check Aviva (Roche Diagnostics).
- non-glycosylated liraglutide was also administered to db / db mice and blood glucose levels were measured over time and compared with the effect of position 30 Cys-disialoglycosylated liraglutide.
- the results are shown in FIG.
- the blood stability of 30th position Cys-disialoglycosylated liraglutide was high, and showed a strong blood glucose lowering action 30 minutes after administration, and the effect was sustained until 12 hours later.
- Cys-disialoglycosylated liraglutide at position 30 showed a blood glucose level lowering action and persistence equivalent to that of non-glycosylated liraglutide, and the effect of glycosylation on the amino acid at position 30 of liraglutide was not detected.
- SEQ ID NO: 1 is GLP-1.
- SEQ ID NO: 2 is exendin-4.
- SEQ ID NO: 3 is liraglutide.
- SEQ ID NO: 4 is a general formula of glycosylated exendin-4.
- SEQ ID NO: 5 is a general formula of glycosylated liraglutide.
- SEQ ID NO: 6 is exendin-4 in which Gly at position 30 is substituted with dicialoglycosylated Cys.
- SEQ ID NO: 7 is exendin-4 in which Gly at position 30 is substituted with high mannose-5-type glycosylated Cys.
- SEQ ID NO: 8 is liraglutide in which Arg at position 30 is substituted with asialoglycosylated Cys.
- SEQ ID NO: 9 is liraglutide in which Arg at position 30 is substituted with dicialo-glycosylated Cys.
- SEQ ID NO: 10 is exendin-4 in which Gly at position 30 is replaced with Cys.
- SEQ ID NO: 11 is GLP-1 peptide in which Lys at position 28 is Arg and Arg at position 30 is replaced by Cys.
- SEQ ID NO: 12 is GLP-1 in which Lys at position 28 is Arg and Arg at position 30 is substituted with asialoglycosylated Cys.
- SEQ ID NO: 13 is GLP-1 in which Lys at position 28 is substituted with Arg and Arg at position 30 is substituted with Cys (acm).
- SEQ ID NO: 14 is liraglutide in which Arg at position 30 is substituted with Cys.
- SEQ ID NO: 15 is a peptide having a protecting group synthesized in Comparative Example 1.
- SEQ ID NO: 16 is a peptide having a protective group synthesized in Comparative Example 2.
- SEQ ID NO: 17 is a peptide having a protecting group synthesized in Synthesis Example 1.
- SEQ ID NO: 18 is BIM-51077.
- SEQ ID NO: 19 is a general formula of glycosylated BIM-51077.
- SEQ ID NO: 20 is BIM-51077 in which Lys at position 20 was replaced with Cys.
- SEQ ID NO: 21 is BIM-51077 in which Lys at position 20 was substituted with dicialoglycosylated Cys.
- SEQ ID NO: 22 is a peptide having a protecting group synthesized in Synthesis Example 3.
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Abstract
Description
また、本発明者らも糖鎖の種類や付加位置を変更し、血中半減期が長く、活性の高い糖鎖付加GLP-1を開発している(例えば、特許文献4)。
しかしながら、天然型と異なる構造を有するので、エキセンディン-4と同様に抗原性が懸念されている。特に、リラグルチドは、投与された量の約99%がアルブミンと結合するために投与量が多くなるので、その点でも化合物の抗原性を極力低下させておく必要がある。
即ち、本発明は、
〔1〕抗原性GLP-1アナログの少なくとも1個のアミノ酸が糖鎖付加アミノ酸で置換され、GLP-1活性を有する、抗原性GLP-1アナログの糖鎖付加体;
〔2〕上記〔1〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖付加アミノ酸が、糖鎖付加Asn又は糖鎖付加Cysである、抗原性GLP-1アナログの糖鎖付加体;
〔3〕上記〔1〕又は〔2〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖付加アミノ酸において、糖鎖とアミノ酸とがリンカーを介して結合している、抗原性GLP-1アナログの糖鎖付加体;
〔4〕上記〔1〕~〔3〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が4個以上の糖からなる糖鎖である、抗原性GLP-1アナログの糖鎖付加体;
〔5〕上記〔1〕~〔4〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が2本鎖複合型糖鎖である、抗原性GLP-1アナログの糖鎖付加体;
〔6〕上記〔5〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が、ジシアロ糖鎖、モノシアロ糖鎖、アシアロ糖鎖、ジグルクナック糖鎖、及びジマンノース糖鎖からなる群から選択される糖鎖である、抗原性GLP-1アナログの糖鎖付加体;
〔7〕上記〔5〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が、
で表される糖鎖である、抗原性GLP-1アナログの糖鎖付加体;
〔8〕上記〔1〕~〔7〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記抗原性GLP-1アナログがエキセンディン-4である、抗原性GLP-1アナログの糖鎖付加体;
〔9〕上記〔8〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、糖鎖付加アミノ酸で置換された部位が、配列番号:2に記載のアミノ酸配列における、30位である、抗原性GLP-1アナログの糖鎖付加体;
〔10〕上記〔8〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、
配列番号:2に記載のアミノ酸配列からなるペプチドにおいて、30位のGlyが糖鎖付加Cysに置換されており、
前記糖鎖が、下記式で示されるジシアロ糖鎖
前記糖鎖付加Cysにおいて、前記糖鎖と前記Cysとがリンカーを介して結合している、抗原性GLP-1アナログの糖鎖付加体;
〔11〕上記〔1〕~〔7〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記抗原性GLP-1アナログがリラグルチドである、抗原性GLP-1アナログの糖鎖付加体;
〔12〕上記〔11〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖付加アミノ酸で置換された部位が、配列番号:3に記載のアミノ酸配列における30位である、抗原性GLP-1アナログの糖鎖付加体;
〔13〕上記〔11〕に記載の抗原性GLP-1アナログの糖鎖付加体であって、
配列番号:3に記載のアミノ酸配列からなるペプチドにおいて、30位のArgが糖鎖付加Cysに置換されており、
前記糖鎖が、下記式で表わされるジシアロ糖鎖、又は、
前記糖鎖付加Cysにおいて、前記糖鎖と前記Cysとがリンカーを介して結合している、抗原性GLP-1アナログの糖鎖付加体;
〔14〕上記〔1〕~〔13〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が実質的に均一である、抗原性GLP-1アナログの糖鎖付加体;
〔15〕上記〔1〕~〔13〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が99%以上均一である、抗原性GLP-1アナログの糖鎖付加体;
〔16〕上記〔1〕~〔15〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、糖鎖を付加していない抗原性GLP-1アナログに比較して抗原性が2分の1以下である、抗原性GLP-1アナログの糖鎖付加体;
〔17〕上記〔1〕~〔16〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、糖鎖を付加していない抗原性GLP-1アナログより抗原性が低下し、天然型GLP-1よりGLP-1活性が上昇している、抗原性GLP-1アナログの糖鎖付加体;
〔18〕上記〔1〕~〔17〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体を有効成分として含む医薬組成物;
〔19〕上記〔18〕に記載の医薬組成物であって、GLP-1に関連する疾患の治療又は予防のための医薬組成物;
〔20〕上記〔19〕に記載の医薬組成物であって、前記GLP-1に関連する疾患が糖尿病である医薬組成物;
〔21〕上記〔1〕~〔17〕のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体の有効量を投与することを特徴とする、GLP-1に関連する疾患の治療又は予防方法、に関する。
付加される糖鎖も生体内で容易に分解されるので、その蓄積により生体に薬害を与えることはない。
また、本発明で用いられる糖鎖には、比較的短いものが多いので、複雑な製造工程を経ずに、均一な構造のものを得ることができる。従って、大規模かつ安定に医薬品レベルの高品質な抗原性GLP-1アナログの糖鎖付加体を得ることができる。
His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys-Glu-Phe-Ile-Ala-Trp-Leu-Val-Lys-Gly-Arg-Gly(配列番号:1)
抗原性GLP-1アナログとしては、例えば、エキセンディン-4(以下、「Ex-4」と記載する場合もある。)、リラグルチド、タスポグルチド(別名BIM-51077、Giannoukakis,N.:Curr.Opin.Investig.Drugs,2007,8:842-848)、及びZP-10A(Thorkildsen,C.et al.:J.Pharmacol.Exp.Ther.,2003,307:490-496)等が挙げられるがこれらに限定されない。
糖鎖が結合するアミノ酸の種類に特に限定はなく、天然アミノ酸、非天然アミノ酸のいずれを用いることもできる。糖鎖付加アミノ酸が生体内に糖ペプチド(糖たんぱく質)として存在するものと同一又は類似の構造を有するという観点からは、糖鎖付加アミノ酸は、N-結合型糖鎖のような糖鎖付加Asn、O-結合型糖鎖のような糖鎖付加Ser及び糖鎖付加Thrが好ましく、特に糖鎖付加Asnが好ましい。
本発明の一態様において、アミノ酸を糖鎖付加アミノ酸で置換する部位は、GLP-1の1、4、7、9、13、15及び23位以外の部位から選択される1以上の部位、特に、1、4及び9位以外の部位から選択される1以上の部位である。
H-His-Gly-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Leu-Ser-Lys-Gln-Met-Glu-Glu-Glu-Ala-Val-Arg-Leu-Phe-Ile-Glu-Trp-Leu-Lys-Asn-Gly-Gly-Pro-Ser-Ser-Gly-Ala-Pro-Pro-Pro-Ser-NH2(配列番号:2)
糖鎖付加エキセンディン-4は、例えば、以下の一般式(1)で表わされる。
一般式(1)
H-His-Gly-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Leu-Ser-Xaa12-Gln-Xaa14-Glu-Xaa16-Glu-Ala-Val-Xaa20-Leu-Phe-Ile-Xaa24-Trp-Leu-Lys-Xaa28-Gly-Xaa30-Pro-Ser-Ser-Gly-Ala-Pro-Pro-Pro-Ser-NH2
[式中、Xaa12は、Lys、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa14は、Met、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa16は、Glu、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa20は、Arg、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa24は、Glu、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa28は、Asn、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa30は、Gly、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa12、Xaa14、Xaa16、Xaa20、Xaa24、Xaa28及びXaa30の少なくとも1つは糖鎖付加Cysまたは糖鎖付加Asnである。](配列番号:4)
中でも、Xaa24が糖鎖付加Cysであることが好ましい。
His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys20-Glu-Phe-Ile-Ala-Trp-Leu-Val-Arg-Gly-Arg-Gly(配列番号:3)
ここで、Lys20には、下記式で示されるように、グルタミン酸を介してパルミトイル基が結合している。
一般式(2)
His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Xaa12-Tyr-Xaa14-Glu-Xaa16-Gln-Ala-Ala-Lys20-Glu-Phe-Ile-Xaa24-Trp-Leu-Val-Xaa28-Gly-Xaa30-Gly
[式中、Xaa12は、Ser、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa14は、Leu、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa16は、Gly、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa24は、Ala、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa28は、Arg、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa30は、Arg、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa12、Xaa14、Xaa16、Xaa24、Xaa28及びXaa30の少なくとも1つは糖鎖付加Cysまたは糖鎖付加Asnである。](配列番号:5)
中でも、Xaa24及び/又はXaa30が糖鎖付加Cys又は糖鎖付加Asnであることが好ましく、特に、Xaa30が糖鎖付加Cysであることが好ましい。
His-R2-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys-Glu-Phe-Ile-Ala-Trp-Leu-Val-Lys-R2-Arg-NH2
[式中、R2は、α-メチルアラニン(アミノイソブタン酸、Aibとも呼ぶ)を示す。](配列番号18)
糖鎖付加BIM51077は、例えば、以下の一般式(3)で表わされる。
一般式(3)
His-R2-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Xaa18-Tyr-Xaa20-Glu-Xaa22-Gln-Ala-Ala-Xaa26-Glu-Phe-Ile-Xaa30-Trp-Leu-Val-Xaa34-R2-Xaa36-NH2
[式中、R2は、α-メチルアラニンを示し、
Xaa18は、Ser、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa20は、Leu、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa22は、Gly、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa26は、Lys、糖鎖付加Cys、糖鎖付加Asn、又は糖鎖付加Lysを示す。
Xaa30は、Ala、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa34は、Lys、糖鎖付加Cys、糖鎖付加Asn、又は糖鎖付加Lysを示す。
Xaa36は、Arg、糖鎖付加Cys、又は糖鎖付加Asnを示す。
Xaa18、Xaa20、Xaa22、Xaa26、Xaa30、Xaa34及びXaa36のすくなくとも1つは糖鎖付加Cysまたは糖鎖付化Asnである。](配列番号19)
また、本明細書において「ジシアロ糖鎖」、「モノシアロ糖鎖」、「アシアロ糖鎖」、「ジグルクナック糖鎖」、「ジマンノース糖鎖」には、上記化学式で示したもののほか、化学式で示した例と結合様式の異なるものも含まれ、かかる糖鎖も本発明の糖鎖として好ましく用いられる。かかる糖鎖としては、例えば、ジシアロ糖鎖又はアシアロ糖鎖においてシアル酸とガラクトースが(α2→3)結合で結合しているもの等が挙げられる。
ハイマンノース-5(M-5)
具体的には、
(a1)配列番号:2に記載のアミノ酸配列からなるエキセンディン-4において、30位のGlyがジシアロ糖鎖付加Cysに置換された糖鎖付加抗原性GLP-1アナログ(実施例1)(配列番号:6);
(a2)配列番号:2に記載のアミノ酸配列からなるエキセンディン-4において、30位のGlyがハイマンノース-5型糖鎖付加Cysに置換された糖鎖付加抗原性GLP-1アナログ(実施例2)(配列番号:7);
(a3)配列番号:3に記載のアミノ酸配列からなるリラグルチドにおいて、30位のArgがアシアロ糖鎖付加Cysに置換された糖鎖付加抗原性GLP-1アナログ(実施例3)(配列番号:8);
(a4)配列番号:3に記載のアミノ酸配列からなるリラグルチドにおいて、30位のArgがジシアロ糖鎖付加Cysに置換された糖鎖付加抗原性GLP-1アナログ(実施例4)(配列番号:9)
(a5)配列番号:18に記載のアミノ酸配列からなるBIM-50177において、20位のLysがジシアロ糖鎖付加Cysに置換された糖鎖付加抗原性GLP-1アナログ(実施例5)(配列番号:21)
本発明の糖鎖付加抗原性GLP-1アナログは、当業者に公知のペプチド合成方法に、糖鎖付加工程を組み込むことで製造することができる。糖鎖付加に際しては、トランスグルタミナーゼに代表される、酵素の逆反応を利用する方法も用いることができるが、この場合、付加する糖鎖が大量に必要になる、最終工程後の精製が煩雑になる、糖鎖の付加位置及び付加可能な糖鎖が制限される、等の問題があるため、アッセイ用等の少量の合成には用いることが可能でも、医薬品製造等の大規模な製造には実用的な方法とは言えないことがある。
糖鎖付加抗原GLP-1アナログは、例えば、以下に概略を示す糖鎖付加アスパラギンを用いた固相合成によって製造することができる。
(1)水酸基を有する樹脂(レジン)の水酸基と、脂溶性保護基でアミノ基窒素が保護されたアミノ酸のカルボキシル基をエステル化反応させる。この場合アミノ酸のアミノ基窒素を脂溶性保護基で保護しているので、アミノ酸同士の自己縮合は防止され、レジンの水酸基とアミノ酸のカルボキシル基が反応してエステル化が起こる。
(2)得られたエステルの脂溶性保護基を脱離して遊離アミノ基を形成させる。
(3)この遊離アミノ基と、脂溶性保護基でアミノ基窒素が保護された任意のアミノ酸のカルボキシル基とアミド化反応させる。
(4)上記脂溶性保護基を脱離して遊離アミノ基を形成させる。
(5)上記(3)及び(4)の工程を1回以上繰り返すことにより、任意の数の任意のアミノ酸が連結した、末端にレジンを結合し、他端に遊離アミノ基を有するペプチドが得られる。
(6)最後に、酸でレジンを切断することにより、所望のアミノ酸配列を有するペプチドを得ることができる。
ここで、(1)において、脂溶性保護基でアミノ基窒素が保護されたアミノ酸の代わりに、脂溶性保護基でアミノ基窒素が保護された糖鎖付加アスパラギンを用い、当該アスパラギン部分のカルボキシル基とレジンの水酸基とを反応させれば、C末端に糖鎖付加アスパラギンを有するペプチドを得ることができる。
また、(2)の後、又は、(3)と(4)を1回以上の任意の回数繰り返した後、(3)において、脂溶性保護基でアミノ基窒素が保護されたアミノ酸の代わりに、脂溶性保護基でアミノ基窒素が保護された糖鎖付加アスパラギンを用いれば、任意の箇所に糖鎖を付加することができる。
また、(1)及び(3)のいずれかの工程で、2回以上、脂溶性保護基でアミノ基窒素が保護されたアミノ酸の代わりに、脂溶性保護基でアミノ基窒素が保護された糖鎖付加アスパラギンを用いれば、任意の2ヶ所以上に糖鎖が付加されたペプチドを得ることができる。
糖鎖付加アミノ酸を結合させた後、脂溶性保護基を脱離して遊離アミノ基を形成させ、その直後に工程(6)を行えば、N末端に糖鎖付加アスパラギンを有するペプチドを得ることができる。
また、Ex-4のようにC末端をアミド化する場合には、Rink-Amido-PEGAレジン(メルク社製)を用いることが好ましい。このレジンとペプチドを酸で切断することにより、ペプチドのC末端アミノ酸をアミド化することができる。
糖鎖付加抗原性GLP-1アナログは、まずペプチド鎖を合成し、後で糖鎖を付加する方法によっても製造することができる。具体的には、糖鎖を付加したい位置にCysを含むペプチドを、固相合成法、液相合成法、細胞により合成する方法、天然に存在するものを分離抽出する方法等により製造する。
次に、ハロアセタミド化複合型糖鎖誘導体を上記で得たCysを含むペプチドと反応させることにより、糖鎖をペプチドに結合させる。上記反応は、通常0~80℃、好ましくは、10~60℃、更に好ましくは15~35℃で行うのが良い。反応時間は、好ましくは、通常30分~5時間程度である。反応終了後は、適宜、公知の方法(例えば、高速液体カラムクロマトグラフィー(HPLC))で精製するのが良い。
本方法は、糖鎖を付加する抗原性GLP-1アナログにLys残基が含まれる場合に有用である。
先ず、Lysを含むペプチドを、固相合成法、液相合成法、細胞による合成、天然に存在するものを分離抽出する方法等により製造する。
次に、糖鎖付加アミノ酸に、グルタル酸を結合させる。例えば、糖鎖付加アミノ酸をDMSO溶液に溶解させ、この溶液に、グルタル酸-EDC混合のDMSO溶液を加え、室温で1日撹拌する。反応混合物を適宜希釈した後、分子量排除ゲルクロマトグラフィー等で分画することにより、α-アミノ基にグルタル酸を結合させた糖鎖付加アミノ酸を得ることができる。
次いで、グルタル酸結合糖鎖付加アミノ酸のDMSO溶液に、N-ヒドロキシコハク酸イミドのDMSO溶液およびEDCのDMSO溶液を加え、室温で6時間撹拌した後、EDCを不活化することにより、グルタル酸結合糖鎖付加アミノ酸のN-ヒドロキシコハク酸イミジルエステルを合成することができる。
続いて、抗原性GLP-1アナログのDMSO溶液に、DIPEA及びグルタル酸結合糖鎖付加アミノ酸のN-ヒドロキシコハク酸イミジルエステルを加え、室温で2時間撹拌した後、グリシン水溶液を加えて反応を停止し、適宜精製することにより、抗原性GLP-1アナログのLys残基にグルタル酸リンカーを介して糖鎖付加アミノ酸を結合させることができる。
抗原性GLP-1アナログの所望の部位のアミノ酸をLysに置換したり、抗原性GLP-1の野生型に含まれるLys残基を他のアミノ酸で置換したりすることにより、所望の部位に糖鎖付加アミノ酸を結合させた糖鎖付加抗原性GLP-1アナログを得ることが可能である。また、C法によれば、野生型抗原性GLP-1アナログに含まれるLysに糖鎖付加する場合、ペプチド骨格が野生型と同一の糖鎖付加抗原性GLP-1アナログを得ることができる。
本発明の糖鎖付加抗原性GLP-1アナログは、GLP-1活性を有する。本発明の糖鎖付加抗原性GLP-1アナログは、好ましくは天然型GLP-1と同等又はそれ以上のGLP-1活性を有し、さらに好ましくは、糖鎖を付加していない抗原性GLP-1アナログ(以下、「非糖鎖付加抗原性GLP-1アナログ」という場合もある。)と比較して同等又はそれ以上のGLP-1活性を有する。
本発明の糖鎖付加抗原性GLP-1アナログの抗原性は、非糖鎖付加抗原性GLP-1アナログと比較して、好ましくは約2分の1以下、より好ましくは約3分の1以下、さらに好ましくは約4分の1程度に低下している。
次に、本発明の糖鎖付加抗原性GLP-1アナログを有効成分として含有する医薬組成物について説明する。
本発明の糖鎖付加抗原性GLP-1アナログを有効成分として含有する医薬組成物は、GLP-1に関連する疾患の治療又は予防に有効である。上述の通り、GLP-1には種々の作用が知られており、これらの作用に関連する疾患も様々である。例えば、GLP-1が、インスリン放出を刺激することにより、細胞によるグルコース取り込み及び血糖値の低下を引き起こすことが見出されている。また、胃及び/又は腸運動性を抑制すること、胃及び/又は腸内容排出を抑制すること並びに食物摂取を抑制することも見出されている。従って、GLP-1に関連する疾患には、例えば、非インスリン依存性糖尿病(NIDDM)、インスリン依存性糖尿病、脳卒中(Efendicによる国際公開公報第WO00/16797号パンフレットを参照)、心筋梗塞(Efendicによる国際公開公報第WO98/08531号パンフレットを参照)、肥満(Efendicによる国際公開公報第WO98/19698号パンフレットを参照)、機能性消化不良、過敏性腸症候群(Efendicによる国際公開公報第WO99/64060号パンフレットを参照)、膵島移植が含まれる。本発明の糖鎖付加抗原性GLP-1アナログを有効成分として含有する医薬組成物は、特に糖尿病の治療又は予防に有効であり、より特定すれば、1型糖尿病の予防、2型糖尿病の治療に有効である。
このような医薬組成物としては、例えば、錠剤、丸剤、散剤、液剤、懸濁剤、乳剤、顆粒剤、カプセル剤、坐剤、注射剤等が挙げられる。
本発明はまた、本発明の糖鎖付加抗原性GLP-1アナログの有効量を投与することを特徴とする、GLP-1に関連する疾患の治療又は予防方法も提供する。
また、本明細書において用いられる「含む」との用語は、文脈上明らかに異なる理解をすべき場合を除き、記述された事項(部材、ステップ、要素、数字など)が存在することを意図するものであり、それ以外の事項(部材、ステップ、要素、数字など)が存在することを排除しない。
第一の、第二のなどの用語が種々の要素を表現するために用いられるが、これらの要素はそれらの用語によって限定されるべきではないことが理解される。これらの用語は一つの要素を他の要素と区別するためのみに用いられているのであり、例えば、第一の要素を第二の要素と記し、同様に、第二の要素は第一の要素と記すことは、本発明の範囲を逸脱することなく可能である。
後述する合成例1により合成したEx-4(配列番号:10;配列番号:2に示すEx-4のアミノ酸配列の30位のGlyがCysで置換された39残基のペプチド)12.0mgと、下記式(a)で示すブロモアセチル化したジシアロ糖鎖(大塚化学株式会社製)36mgを100mMリン酸ナトリウム緩衝液pH7.4、5mMトリスカルボキシエチルホスフィン 1mL中、37℃で1時間反応させた。
後述する合成例1により合成したEx-4(配列番号:10;配列番号:2に示すEx-4のアミノ酸配列の30位のGlyがCysで置換された39残基のペプチド)1.2mgと、後述する合成例2で合成したブロモアセチル化した下記式(b)で示すM5糖鎖3.9mgを、35mMリン酸ナトリウム緩衝液pH7.4、1mMトリスカルボキシエチルホスフィン 0.17mL中、37℃で3時間反応させた。
実施例3 30位Cys-アシアロ糖鎖付加リラグルチド(配列番号:8)の合成
(1)28位Arg,30位Cys GLP-1(配列番号:11)の合成
Fmoc法によるによるペプチド固相合成法にて合成し、HPLC[カラム:SHISEIDO UG-120(C18,5μm)、φ20x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 8ml/min;B液20→95% 20min linear gradient]にて精製した。
(2)28位Arg,30位Cys-アシアロ糖鎖付加GLP-1(配列番号:12)の合成
合成した28位Arg,30位Cys GLP-1(7-37)21.9mgと下記式に示すアシアロブロモアセチル糖鎖40.3mg,水1.3mLを100mM TCEP 60μL,200mM HEPES buffer pH 7.5 700μL中、37℃で7時間反応させた。
(3)30位Cys-アシアロ糖鎖付加リラグルチド(配列番号:8)の合成
(2)で合成した28位Arg,30位Cys-アシアロ糖鎖付加GLP-1(7-37)7.0mgとPal-Glu(OBu)-OSu(特表2002-512175号公報、例33参照)5.0mgをDIPEA4.6μL,NMP300μL、水200μL中で5分反応させた。Gly水溶液(Gly 6mg,水100μL,EtOH 100μL)を加え、HPLC[カラム:Zorbax300SB-CN、φ4.6x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 1.0ml/min;B液40→55% 15min 65℃ linear gradient]で精製し、凍結乾燥した(4.3mg)。
得られた凍結乾燥品の中から1.1mgをTFA処理した後、再度HPLC同条件で精製し(図1)、リラグルチドの30位のArgがアシアロ糖鎖付加Cysで置換された30Cysアシアロ糖鎖付加リラグルチドを0.8mg得た。(MALDI TOF Mass calculated for[M(average)+H]+5379.68,found 5378.42)
実施例4 30位Cys-ジシアロ糖鎖付加リラグルチド(配列番号:9)の合成
(1)28位Arg,30位Cys(acm)GLP-1(配列番号:13)の合成
Fmoc法によるペプチド固相合成法にて合成し、HPLC[カラム:SHISEIDO UG-120(C18,5μm)、φ20x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 8ml/min、;B液20→95% 20min linear gradient]にて精製した。
(2)30位Cysリラグルチドの合成
(1)で得られたペプチド10.4mgとPal-Glu(OBu)-OSu(特表2002-512175号公報、例33参照)9.0mgをDIPEA10.9μL,NMP 600μL、水300μL中で10分反応させた。Gly水溶液(Gly 29mg, 水400μL,EtOH 200μL)を加え、HPLC[カラム:Zorbax300SB-CN、φ4.6x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 1.0ml/min;B液48-55(7min)-65(8min)-100(9min),15min 65℃ linear gradient]で精製し、凍結乾燥した。
得られたペプチド8.2mgのうち5.2mgをTFA処理した後、HPLC[カラム:Zorbax300SB-CN、φ4.6x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 1.0ml/min、;B液45-47(1min)-50(7min)-95(8min),14min 65℃ linear gradient]で精製し、凍結乾燥した(3.2mg)。
凍結乾燥品3.2mgを2.5mM90%酢酸銀水溶液(160μL)に溶解させ、室温にて2時間撹拌した。ジチオスレイトール(3.8mg)を加え、HPLC[カラム:Zorbax300SB-CN、φ4.6x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 1.0ml/min、;B液45-48(1min)-50(7min)-95(8min),14min,65℃ linear gradient]で精製し(図2)、凍結乾燥し、リラグルチドの30位のArgがCysで置換されたペプチド(配列番号:14)を2.9mg得た。
(3)30位Cys-ジシアロ糖鎖付加リラグルチド(配列番号:9)の合成
(2)で得られた30位Cysリラグルチド1.6mg、下記式で示されるジシアロブロモアセチル糖鎖20.0mg、水 250μLを100mM TCEP 40μL,200mM HEPES buffer pH7.5 480μL中、37℃で6時間反応させた。
合成例3にて合成したBIM51077の20位のLysがCysで置換された30残基のペプチド(配列番号:20)(2.4mg,0.72μmol)およびグアニジン(216mg)を蒸留水(240μL)に溶解し、順次TCEP水溶液(100mM、100μL)、下記式(a)で示すブロモアセチル化したジシアロ糖鎖(10mg/mL,100μL,4.26μmol)ならびに、500mMのリン酸ナトリウム緩衝液(pH7.4,100μL)を加えた。
固相合成用カラムにRink-Amido-PEGA resin(メルク社製)(100μmol)をDMFで洗浄後、ペプチド鎖の伸長は以下に示す方法を用いて、順次アミノ酸を縮合させた。
Fmoc基でアミノ基を保護したアミノ酸(0.5mmol)を0.45M HCTU・HOBT/NMP(2.5mmol)に溶解させ、固相合成用カラムに加え、続いて0.9M DIPEA/NMP(2.5mmol)を加えた。室温で20分間攪拌した後、樹脂をDCM及びDMFを用いて洗浄し、Fmoc基を15分20%ピペリジン/DMF溶液(2ml)を用いて脱保護した。この操作を繰り返し、アミノ酸を順次縮合させた。
Fmoc基で保護したアミノ酸にはFmoc-Ser(tBu),Fmoc-Pro,Fmoc-Pro,Fmoc-Pro,Fmoc-Ala,Fmoc-Gly,Fmoc-Ser(tBu),Fmoc-Ser(tBu),Fmoc-Pro,Fmoc-Gly,Fmoc-Gly,Fmoc-Asn(Trt),Fmoc-Lys(Boc),Fmoc-Leu,Fmoc-Trp(Boc),Fmoc-Glu(OtBu),Fmoc-Ile,Fmoc-Phe,Fomc-Leu,Fmoc-Arg(Pbf),Fmoc-Val,Fmoc-Ala,Fmoc-Glu(OtBu),Fmoc-Glu(OtBu),Fmoc-Glu(OtBu),Fmoc-Met,Fmoc-Gln(Trt),Fmoc-Lys(Boc),Fmoc-Ser(tBu)Fmoc-Leu,Fmoc-Asp(OtBu),Fmoc-Ser(tBu),Fmoc-Thr(tBu),Fmoc-Phe,Fmoc-Thr(tBu),Fmoc-Gly,Fmoc-Glu(OtBu),Fmoc-Gly,Fmoc-His(Trt)を用い、固相樹脂にSer(tBu)-Pro-Pro-Pro-Ala-Gly-Ser(tBu)-Ser(tBu)-Pro-Gly-Gly-Asn(Trt)-Lys(Boc)-Leu-Trp(Boc)-Glu(OtBu)-Ile-Phe-Leu-Arg(Pbf)-Val-Ala-Glu(OtBu)-Glu(OtBu)-Glu(OtBu)-Met-Gln(Trt)-Lys(Boc)-Ser(tBu)-Leu-Asp(OtBu)-Ser(tBu)-Thr(tBu)-Phe-Thr(tBu)-Gly-Glu(OtBu)-Gly-His(Trt)の39残基ペプチドを得た(配列番号:15)。
得られたペプチドを形成した樹脂を一部固相合成用カラムにとり、トリフルオロ酢酸:水:TIPS(=95:2.5:2.5)を樹脂が十分に浸る程度に加え、3時間室温で撹拌した。樹脂をろ過して除き、反応溶液を減圧下で濃縮した。得られた残渣をHPLC[カラム:SHISEIDO UG-120(C18 5μm)、φ20x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 8.0ml/min、;B液35→60% 20min linear gradient]で精製し、Ex-4の39残基のペプチド(配列番号:2)が得られた。
固相合成用カラムにAmino-PEGA resin(100μmol)を入れ、DCM、DMFで十分に洗浄した後、DMFで十分に膨潤させた。4-ヒドロキシメチル-3-メトキシフェノキシ酪酸(HMPB)(0.25mmol)、TBTU(0.25mmol)、N-エチルモルホリン(0.25mmol)をDMF(2ml)に溶解させてカラムに入れ、室温で4時間攪拌した。樹脂をDMF及びDCMで十分に洗浄し、HMPB-PEGA resinを得、固相合成の固相として用いた。
リラグルチドの調製は特表JP2002-512175 例34の方法に従い下記の手順にて実施した。
Fmoc法によるペプチド固相合成法にて合成し、HPLC[カラム:SHISEIDO UG-120(C18,5μm)、φ20x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 8ml/min、;B液20→95% 20min linear gradient]にて精製した。
得られたペプチド10.4mgとPal-Glu(OBu)-OSu(9.0mg)をDIPEA10.9μL,NMP 600μL、水300μL中で10分反応させた。Gly水溶液(Gly 29mg,水400μL,EtOH 200μL)を加え、HPLC[カラム:Zorbax300SB-CN、φ4.6x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 1.0ml/min;B液48-55(7min)-65(8min)-100(9min),15min 65℃]で精製した後、凍結乾燥した。
得られた保護脂質化ペプチドをTFA処理した後、HPLC[カラム:Zorbax 300SB-CN、φ4.6x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 1.0ml/min、;B液45-47(1min)-50(7min)-95(8min),14min,65℃]で精製した後、凍結乾燥することにより、リラグルチド(配列番号:3)を得た。(MALDI TOF Mass calculated for[M(average)+H]+3749.95,found 3750.97)
固相合成用カラムにRink-Amido-PEGA resin(メルク社製)(100μmol)をDMFで洗浄後、ペプチド鎖の伸長は以下に示す方法を用いて、順次アミノ酸を縮合させた。
Fmoc基でアミノ基を保護したアミノ酸(0.5mmol)を0.45M HCTU・HOBT/NMP(2.5mmol)に溶解させ、固相合成用カラムに加え、続いて0.9M DIPEA/NMP(2.5mmol)を加えた。室温で20分間攪拌した後、樹脂をDCM及びDMFを用いて洗浄し、Fmoc基を15分20%ピペリジン/DMF溶液(2ml)を用いて脱保護した。この操作を繰り返し、アミノ酸を順次縮合させた。
Fmoc基で保護したアミノ酸にはFmoc-Ser(tBu),Fmoc-Pro,Fmoc-Pro,Fmoc-Pro,Fmoc-Ala,Fmoc-Gly,Fmoc-Ser(tBu),Fmoc-Ser(tBu),Fmoc-Pro,Fmoc-Cys(Trt),Fmoc-Gly,Fmoc-Asn(Trt),Fmoc-Lys(Boc),Fmoc-Leu,Fmoc-Trp(Boc),Fmoc-Glu(OtBu),Fmoc-Ile,Fmoc-Phe,Fomc-Leu,Fmoc-Arg(Pbf),Fmoc-Val,Fmoc-Ala,Fmoc-Glu(OtBu),Fmoc-Glu(OtBu),Fmoc-Glu(OtBu),Fmoc-Met,Fmoc-Gln(Trt),Fmoc-Lys(Boc),Fmoc-Ser(tBu)Fmoc-Leu,Fmoc-Asp(OtBu),Fmoc-Ser(tBu),Fmoc-Thr(tBu),Fmoc-Phe,Fmoc-Thr(tBu),Fmoc-Gly,Fmoc-Glu(OtBu),Fmoc-Gly,Fmoc-His(Trt)を用い、
固相樹脂にSer(tBu)-Pro-Pro-Pro-Ala-Gly-Ser(tBu)-Ser(tBu)-Pro-Cys(Trt)-Gly-Asn(Trt)-Lys(Boc)-Leu-Trp(Boc)-Glu(OtBu)-Ile-Phe-Leu-Arg(Pbf)-Val-Ala-Glu(OtBu)-Glu(OtBu)-Glu(OtBu)-Met-Gln(Trt)-Lys(Boc)-Ser(tBu)-Leu-Asp(OtBu)-Ser(tBu)-Thr(tBu)-Phe-Thr(tBu)-Gly-Glu(OtBu)-Gly-His(Trt)
の39残基ペプチドを得た(配列番号:17)。
得られたペプチドを形成した樹脂を一部固相合成用カラムにとり、トリフルオロ酢酸:水:TIPS(=95:2.5:2.5)を樹脂が十分に浸る程度に加え、3時間室温で撹拌した。樹脂をろ過して除き、反応溶液を減圧下で濃縮した。得られた残渣をHPLC[カラム:SHISEIDO UG-120(C18 5μm)、φ20x250mm、グラジエント:A液:0.1%TFA水、B液:0.09%TFA/10%水/90%AN 8.0ml/min、;B液35→60% 20min linear gradient]で精製し、Ex-4の30位のGlyがCysで置換された39残基のペプチドが得られた。(MALDI TOF Mass calculated for[M+H]+4230.60,found 4231.27)(配列番号:10)
大豆パウダー100gを、500mlのアセトンで2回、500mlのメタノールで2回洗浄し脱脂大豆パウダー61.4gを得た。
得られた脱脂大豆パウダー43.0gに水430ml、液化酵素T(HBI社製)4.3gを加え、撹拌しながら70℃で19時間反応させた。反応液を遠心分離(10000G、10分)して上清と沈殿物に分け、上清800mlを得た。さらに沈殿物に水430ml、液化酵素T4.3gを加えて再度70℃で19時間反応させ、反応液を遠心分離(10000G、10分)して上清と沈殿物に分け、上清600mlを得た。
得られた上清を合わせ(計1400ml)、500mMのリン酸緩衝液pH7.0を100ml、オリエンターゼONS(HBI社製)3.0gを加え、撹拌しながら50℃で19時間反応を行った。反応後の液をろ過して不溶物を除き、ロータリーエバポレーターにて液量が400mlになるまで濃縮した。得られた液を分画分子量1Kの限外ろ過膜(Minimate TFF Capsule 1K membrane ポール社製)を用いて限外ろ過を行った。
6時間の処理の後、膜を透過しなかった液230mlを回収した。回収した液に1Mトリス-塩酸緩衝液pH8.0を20ml、アジ化ナトリウム250mg、アクチナーゼE(科研製薬社製)423.5mgを加え37℃で82時間反応させた。反応液をろ過して不溶物を除いた後、ロータリーエバポレーターにて液量が100mlになるまで濃縮した。濃縮液を半分ずつ2回にわけてSephadex-G25(φ25mm×100mm)カラムにて分画し、糖鎖含有画分のみを集めて濃縮し2.22gを得た。
得られた糖鎖含有画分に蒸留水21.0ml、エタノール14.9mlを加えて溶かし、炭酸水素ナトリウム1.13g、Fmoc-OSu 2.02gを加え室温で16時間反応させた。反応後アセトン250mlを加え沈殿物をメンブレンフィルター(φ47mm、保持粒子経0.5μm アドバンテック東洋社製)でろ過した。膜上に残った不溶物を蒸留水に溶かして回収し、ロータリーエバポレーターにて液量が10ml以下になるまで濃縮した。濃縮液をSephadex-G25(φ25mm×100mm)カラムにて分画し、糖鎖含有画分を集めて濃縮し1.37gを得た。
これをさらに蒸留水4mlに溶かしてODSカラム(ワコーゲル100C18、φ25mm×150mm)にて分画し、糖鎖含有画分のみを集めて濃縮し、粗精製糖鎖48.6mgを得た。粗精製糖鎖をHPLC[カラム:YMC-PackODS-AM φ20×250mm、溶離液:アセトニトリル/25mM酢酸アンモニウム緩衝液=82/18、流速:8.0ml/min]にて精製し、ハイマンノース型Man5GlcNAc2糖鎖(M5糖鎖)13.0mgを得た。
得られたM5糖鎖11.0mgに水165μlを加えて溶かした。この溶液に炭酸水素アンモニウム200mgを加え室温で41時間処理した後、凍結乾燥した。得られた凍結乾燥品に炭酸水素ナトリウム12.5mg、水110μlを加え、予め10μlのN,N-ジメチルホルムアミド(DMF)に溶解させた無水ブロモ酢酸(アルドリッチ社製)19.9mgを加え、氷冷しながら1時間反応させた。1時間後、反応系を室温に戻しさらに1時間反応させた後、ゲルろ過にて精製を行い、以下に示すブロモアセチル化M5糖鎖(b)7.9mgを得た。
固相合成用カラムにRink-Amido-PEGA resin(メルク社製)(100μmol)をDMFで洗浄後、ペプチド鎖の伸長は以下に示す方法を用いて、順次アミノ酸を縮合させた。
マウスに非糖鎖付加エキセンディン-4あるいは30位Cys-ジシアロ糖鎖付加エキセンディン-4を感作し、血中の抗エキセンディン-4抗体濃度を比較することにより、糖鎖付加がエキセンディンの抗原性に与える効果を検証した。
初回免疫として、実施例1で合成した30位Cys-ジシアロ糖鎖付加エキセンディン-4及び非糖鎖付加エキセンディン-4(American Peptide Company)を、Complete Freund’s adjuvant(Difco Laboratories)と充分に混合してエマルジョンとし、balb/cマウス(雌、7週齢)に腹腔内に投与した。
14日目に、Incomplete Freund’s adjuvant(Difco Laboratories)と充分に混合することによりエマルジョン化した糖鎖付加エキセンディン-4又は非糖鎖付加エキセンディン-4を、Balb/cマウス(雌、7週齢)に皮下投与し、追加免疫とした。
追加免疫から7日後にマウスから血漿を採取した。血漿中の抗エキセンディン-4抗体濃度は、市販の抗エキセンディン-4抗体(Antibodyshop)を標準品としたEnzyme-Linked Immunosorbent assay(ELISA)によって測定した。
50μgの非糖鎖付加エキセンディン-4を96穴ELISAプレートに添加し、37℃、2時間インキュベートした。プレートは0.05%Tween20含有Phosphate Buffered Saline(PBS)、pH7.4(洗浄バッファー)で3回洗浄し、0.5%bovine serum albumin含有洗浄バッファーで4℃、1晩ブロッキングした。ブロッキング後のプレートを3回洗浄した後、血漿サンプルをPBSで希釈することにより作製された希釈系列を添加し、37℃、2時間インキュベートした。洗浄バッファーを用いて3回洗浄されたプレートに50μLのperoxidase-conjugated goat anti-mouse IgGを添加し、37℃、2時間インキュベートした。プレートは洗浄バッファーを用いて3回洗浄し、100μLのABTS peroxidase substrate(Pierce)を添加し発色させた。発色反応は20%SDSを添加することによって停止し、405nmにおける吸光度を測定した。抗エキセンディン-4抗体の濃度は抗エキセンディン-4モノクローナル抗体を標準品として決定した。結果を図4に示す。
糖鎖付加の非糖鎖付加エキセンディン-4を免疫したマウスでは抗体産生が強く誘導され、その血漿中濃度は707±68.2mg/mLであった。これに対し、30位-Cys-ジシアロ糖鎖付加エキセンディン-4を免役したマウスの血漿中抗エキセンディン-4抗体濃度は非糖鎖付加エキセンディン-4を免疫した場合に比べて約4分の1(178.8±22.3mg/mL)に低下し、有意な抗原性低下作用を示した(p<0.001,Student’s t-test)。
実施例1で合成した30位Cys-ジシアロ糖鎖付加エキセンディン-4、若しくは比較例1で合成した非糖鎖付加エキセンディン-4のPBS溶液(0.9nmol/10ml)、又は比較例2で製造したGLP-1のPBS溶液(9nmol/10ml)を、一晩絶食させたC57BL/6JJclマウス(10週齢、雄)に10ml/kgの投与量で腹腔内に投与した。
30分後にグルコース溶液を1mg/gの投与量で経口投与した。グルコース投与前、グルコース投与30分後、60分後、120分後に眼窩採血を行い、アキュチェックアビバ(ロシュ・ダイアグノスティックス社)を用いて血糖値を測定した。同様に、非糖鎖付加リラグルチドもdb/dbマウスに投与し、経時的に血糖値を測定して30位Cys-ジシアロ糖鎖付加リラグルチドの作用と比較した。結果を図5に示す。
30位Cys-ジシアロ糖鎖付加エキセンディン-4及び非糖鎖付加エキセンディン-4は同等の効果を示し、いずれもVehicle(PBSのみ)及びGLP-1より高い血糖上昇抑制作用を示した。
実施例1で合成した30位Cys-ジシアロ糖鎖付加エキセンディン-4のPBS溶液(9nmol/10mL)を、BKS.Cg-+Leprdb/+Leprdb/Jclマウス(10週齢、雄)に10mL/kgの投与量で腹腔内に投与した。化合物投与前、30分後、60分後、120分、240分後に眼窩採血を行い、アキュチェックアビバ(ロシュ・ダイアグノスティックス社)を用いて血糖値を測定した。
血糖値低下作用を、比較例1で合成した非糖鎖付加エキセンディン-4と比較した。結果を図6に示す。
非糖鎖付加エキセンディン-4の血中安定性は高く、投与後30分で強い血糖値低下作用を示し、その効果が240分後まで持続した。30位Cys-ジシアロ糖鎖付加エキセンディン-4は非糖鎖付加エキセンディン-4と同等の血糖値低下作用と持続性を示し、エキセンディン-4の30位のアミノ酸への糖鎖付加の影響は検出されなかった。
試験例1、2及び3の結果から、非糖鎖付加エキセンディン-4の30位への糖鎖付加はエキセンディン-4の薬理作用に影響を与えることなく、非糖鎖付加エキセンディン-4の抗原性を低下させる有効な方法であると考えられた。
実施例4で製造した30位Cys-ジシアロ糖鎖付加リラグルチド、比較例2で製造したGLP-1若しくは比較例3で製造したリラグルチドのPBS溶液(9nmol/10ml)、又はPBS溶液を、一晩絶食させたC57BL/6JJclマウス(10週齢、雄)に10ml/kgの投与量で腹腔内に投与した。
30分後にグルコース溶液を1mg/gの投与量で経口投与した。グルコース投与前、グルコース投与30分後、60分後、120分後に眼窩採血を行い、アキュチェックアビバ(ロシュ・ダイアグノスティックス社)を用いて血糖値を測定した。結果を図7に示す。
30位Cys-ジシアロ糖鎖付加リラグルチド及び非糖鎖付加リラグルチドのいずれもVehicle(PBSのみ)及びGLP-1より高い血糖上昇抑制作用を示したが、30位Cys-ジシアロ糖鎖付加リラグルチドは、非糖鎖付加リラグルチドに比較して、更に高い血糖値上昇抑制作用を示した。
実施例4で製造した30位Cys-ジシアロ糖鎖付加リラグルチドのPBS溶液(9nmol/10mL)を、BKS.Cg-+Leprdb/+Leprdb/Jclマウス(db/dbマウス、10週齢、雄)に10mL/kgの投与量で腹腔内に投与した。化合物投与前、30分後、60分後、120分、240分、480分、720分後に眼窩採血を行い、アキュチェックアビバ(ロシュ・ダイアグノスティックス社)を用いて血糖値を測定した。同様に、非糖鎖付加リラグルチドもdb/dbマウスに投与し、経時的に血糖値を測定して30位Cys-ジシアロ糖鎖付加リラグルチドの作用と比較した。結果を図8に示す。
30位Cys-ジシアロ糖鎖付加リラグルチドの血中安定性は高く、投与後30分で強い血糖値低下作用を示し、その効果が12時間後まで持続した。30位Cys-ジシアロ糖鎖付加リラグルチドは非糖鎖付加リラグルチドと同等の血糖値低下作用と持続性を示し、リラグルチドの30位のアミノ酸への糖鎖付加の影響は検出されなかった。
配列番号:1は、GLP-1である。
配列番号:2は、エキセンディン-4である。
配列番号:3は、リラグルチドである。
配列番号:4は、糖鎖付加エキセンディン-4の一般式である。
配列番号:5は、糖鎖付加リラグルチドの一般式である。
配列番号:6は、30位のGlyがジシアロ糖鎖付加Cysで置換されたエキセンディン-4である。
配列番号:7は、30位のGlyがハイマンノース-5型糖鎖付加Cysで置換されたエキセンディン-4である。
配列番号:8は、30位のArgがアシアロ糖鎖付加Cysで置換されたリラグルチドである。
配列番号:9は、30位のArgがジシアロ糖鎖付加Cysで置換されたリラグルチドである。
配列番号:10は、30位のGlyがCysで置換されたエキセンディン-4である。
配列番号:11は、28位LysがArgで、30位のArgがCysで置換されたGLP-1ペプチドである。
配列番号:12は、28位のLysがArgで、30位のArgがアシアロ糖鎖付加Cysで置換されたGLP-1である。
配列番号:13は、28位のLysがArgで、30位のArgがCys(acm)で置換されたGLP-1である。
配列番号:14は、30位-のArgがCysで置換されたリラグルチドである。
配列番号:15は、比較例1で合成された保護基を有するペプチドである。
配列番号:16は、比較例2で合成された保護基を有するペプチドである。
配列番号:17は、合成例1で合成された保護基を有するペプチドである。
配列番号:18は、BIM-51077である。
配列番号:19は、糖鎖付加BIM-51077の一般式である。
配列番号:20は、20位のLysがCysで置換されたBIM-51077である。
配列番号:21は、20位のLysがジシアロ糖鎖付加Cysで置換されたBIM-51077である。
配列番号:22は、合成例3で合成された保護基を有するペプチドである。
Claims (21)
- 抗原性GLP-1アナログの少なくとも1個のアミノ酸が糖鎖付加アミノ酸で置換され、GLP-1活性を有する、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖付加アミノ酸が、糖鎖付加Asn又は糖鎖付加Cysである、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1又は2に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖付加アミノ酸において、糖鎖とアミノ酸とがリンカーを介して結合している、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~3のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が4個以上の糖からなる糖鎖である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~4のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が2本鎖複合型糖鎖である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項5に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が、ジシアロ糖鎖、モノシアロ糖鎖、アシアロ糖鎖、ジグルクナック糖鎖、及びジマンノース糖鎖からなる群から選択される糖鎖である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~7のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記抗原性GLP-1アナログがエキセンディン-4である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項8に記載の抗原性GLP-1アナログの糖鎖付加体であって、糖鎖付加アミノ酸で置換された部位が、配列番号:2に記載のアミノ酸配列における30位である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~7のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記抗原性GLP-1アナログがリラグルチドである、抗原性GLP-1アナログの糖鎖付加体。
- 請求項11に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖付加アミノ酸で置換された部位が、配列番号:3に記載のアミノ酸配列における30位である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~13のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が実質的に均一である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~13のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、前記糖鎖が99%以上均一である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~15のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、糖鎖を付加していない抗原性GLP-1アナログに比較して抗原性が2分の1以下である、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~16のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体であって、糖鎖を付加していない抗原性GLP-1アナログより抗原性が低下し、天然型GLP-1よりGLP-1活性が上昇している、抗原性GLP-1アナログの糖鎖付加体。
- 請求項1~17のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体を有効成分として含む医薬組成物。
- 請求項18に記載の医薬組成物であって、GLP-1に関連する疾患の治療又は予防のための医薬組成物。
- 請求項19に記載の医薬組成物であって、前記GLP-1に関連する疾患が糖尿病である医薬組成物。
- 請求項1~17のいずれか1項に記載の抗原性GLP-1アナログの糖鎖付加体の有効量を投与することを特徴とする、GLP-1に関連する疾患の治療又は予防方法。
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EP10826655.2A EP2495255A4 (en) | 2009-10-30 | 2010-10-25 | GLYCOSYLATED FORM OF AN ANTIGENIC GLP-1 ANALOG |
CA2778890A CA2778890A1 (en) | 2009-10-30 | 2010-10-25 | Glycosylated form of antigenic glp-1 analogue |
RU2012122162/04A RU2012122162A (ru) | 2009-10-30 | 2010-10-25 | Гликолизированная форма аналога антигенного glp-1 |
JP2011538407A JPWO2011052523A1 (ja) | 2009-10-30 | 2010-10-25 | 抗原性glp−1アナログの糖鎖付加体 |
BR112012011467A BR112012011467A2 (pt) | 2009-10-30 | 2010-10-25 | forma glicosilada de análogo ao glp-1 antigênico. |
AU2010312655A AU2010312655A1 (en) | 2009-10-30 | 2010-10-25 | Glycosylated form of antigenic GLP-1 analogue |
US13/502,723 US20120264684A1 (en) | 2009-10-30 | 2010-10-25 | Glycosylated Form of Antigenic GLP-1 Analogue |
CN2010800490956A CN102666580A (zh) | 2009-10-30 | 2010-10-25 | 抗原性glp-1类似物的糖链加成物 |
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US20120264684A1 (en) | 2012-10-18 |
EP2495255A4 (en) | 2013-05-15 |
TW201119670A (en) | 2011-06-16 |
BR112012011467A2 (pt) | 2019-09-24 |
RU2012122162A (ru) | 2013-12-10 |
CA2778890A1 (en) | 2011-05-05 |
AU2010312655A1 (en) | 2012-05-03 |
CN102666580A (zh) | 2012-09-12 |
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