WO2007000118A1 - Fragments polypeptidiques d'exendine 4 et utilisation correspondante - Google Patents
Fragments polypeptidiques d'exendine 4 et utilisation correspondante Download PDFInfo
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- WO2007000118A1 WO2007000118A1 PCT/CN2006/001495 CN2006001495W WO2007000118A1 WO 2007000118 A1 WO2007000118 A1 WO 2007000118A1 CN 2006001495 W CN2006001495 W CN 2006001495W WO 2007000118 A1 WO2007000118 A1 WO 2007000118A1
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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
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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
- C07K14/57563—Vasoactive intestinal peptide [VIP]; Related peptides
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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
-
- 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
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention relates to Exendin 4 truncated polypeptide fragments which have a blood glucose lowering effect and are useful for the treatment of type 2 diabetes. Background technique
- Type II diabetes insulin-dependent diabetes mellitus
- type 2 diabetes non-insulin-dependent diabetes mellitus
- type II diabetes accounts for more than 90% of diabetic patients.
- Type II diabetes patients exhibit many characteristics, such as insufficient insulin secretion after meals, lagging insulin secretion time, and high blood sugar.
- peripheral insulin receptor sensitivity is reduced, resulting in high blood sugar and high levels of insulin in the blood.
- Glycated hemoglobin HbAlc is above 8% (4-6% for healthy people).
- complications of diabetes such as heart disease and kidney failure. Lowering blood sugar levels is the key to effective treatment of type 2 diabetes.
- insulinotropic secretions sulfonylureas and melitioneds
- non-insulin-secreting drugs insulin, alpha-glucosidase inhibitors, biguanides and Thioagolinediones.
- insulinotropic secretions sulfonylureas and melitioneds
- non-insulin-secreting drugs insulin, alpha-glucosidase inhibitors, biguanides and Thioagolinediones.
- the above six drugs are incapable of treating patients with type 2 diabetes, unable to curb the progressive deterioration of pancreatic beta cells and not reducing HbAlc levels. It can't stop the complications of diabetes such as heart disease and kidney failure. Therefore, it is necessary to study new treatment drugs for type II diabetes.
- U.S. Patent No. 5,424,286 discloses an Exendin 4 polypeptide isolated from the saliva of a Gila monster (Helode Suspectum).
- the peptide consists of 39 amino acid residues and has a 40% homology to the gut glucagon-like peptide-1 (GLP-1) in the amino acid sequence.
- Exendin 4 acts as an analog of GLP-1 and binds to the receptor of GLP-1.
- Exendin 4 promotes the synthesis of proinsulin, promotes insulin secretion, lowers blood sugar, and does not continue to function when blood sugar is normal, so it does not produce hypoglycemia, coma, shock, and is safe and effective. It can reduce HbAlc, increase the amount of beta cells, increase insulin receptor sensitivity in type II diabetes, and inhibit glucagon secretion.
- the Exe n din 4 under the trade name Byetta was approved by the US FDA.
- CN1227567A discloses a truncated Exendin4 peptide consisting of 30 amino acid residues with a C-terminus of Arg or Tyr.
- Eli Lilly and Company has studied a series of GLP-1 analogues that are safe for long-term use in the treatment of diabetes (see WO02047716A). Moreover, these results were all obtained in vitro, and were evaluated by the size of GLP-1 receptor binding ability, the amount of insulin secreted by insulinoma cells, and the amount of cAMP formed (see L Biol. Chem (1997). 272 21201-21206; Regulatory Peptides (2003) 114 153-158; Trend in Pharmacological Sci. (2003) 24 377-383; WO 03011892A;).
- the inventors have worked hard to obtain a new C-terminally truncated Exend polypeptide fragment having a C-terminus.
- the polypeptide with this structure not only shortens the peptide chain length of about 1/4 of the Exendin 4 peptide, but also greatly facilitates the production practice, provides a new choice for the treatment of diabetes, and the peptide can be effectively It is resistant to the action of carboxypeptidase and maintains blood glucose lowering activity for a long time.
- Exendi polypeptide fragment having the structure of formula (I), and a pharmaceutically acceptable salt or ester thereof:
- Xi means Phe or Tyr
- X 2 means Met:, lie or Leu
- X 3 represents Lys
- X 4 means Gly or missing
- X 5 represents Arg or a deletion.
- the amino acid residue (X,) at position 6 of the Exendin4 polypeptide fragment of the formula (I) is preferably Tyr.
- replacing one Phe in the molecule with Tyr facilitates the labeling of 125 iodine.
- the amino acid residue (X 2 ) at position 14 of the Exendin 4 polypeptide fragment of formula (I) may be Met,
- the amino acid residue (X 4 ) at position 30 of the Exendin 4 polypeptide fragment of formula (I) is preferably deleted. More preferred polypeptide fragments are: 1> 1 :, 2] ⁇ 1, 3 1 ⁇ 8, X 4 deletions, X 5 represents
- Exendi polypeptide fragment of the present invention refers to a truncated Exendin4 polypeptide of the present invention having a structure represented by the formula (I).
- a polypeptide may be simply referred to as “E4 (f)", “polypeptide fragment” or “polypeptide of the present invention”.
- the N-terminal amino group and the C-terminal carboxyl group and the amino acid side chain group of the polypeptide of the formula (I) may be modified without modification, such as to form "pharmaceutically acceptable” Accepted ester".
- Modifications to amino acid side chain groups include, but are not limited to, acylation of lysine ⁇ -amino groups, deacylation of arginine, histidine or lysine decane.
- Modifications of the terminal amino group of the oxime include, but are not limited to, de-amino, guanidine-lower alkyl, fluorene-dilow sulfhydryl, and oxime-acyl modifications.
- Modifications of the C-terminal carboxyl group include, but are not limited to, amide, lower mercapto amide, dinonyl amide, and lower alkyl ester modifications.
- the terminal group is protected with a protecting group known to those skilled in the art of protein chemistry, such as acetyl, trifluoroacetyl, Fmoc (9-fluorenyl-methoxycarbonyl), Boc (tert-butoxycarbonyl), Alloc (allyloxycarbonyl), C 1-6 fluorenyl, C 2-8 alkenyl, C 7-9 aralkyl, and the like.
- a protecting group known to those skilled in the art of protein chemistry such as acetyl, trifluoroacetyl, Fmoc (9-fluorenyl-methoxycarbonyl), Boc (tert-butoxycarbonyl), Alloc (allyloxycarbonyl), C 1-6 fluorenyl, C 2-8 alkenyl, C 7-9 aralkyl, and the like.
- the N-terminal amino group and the C-terminal carboxyl group and the amino acid side chain group of the polypeptide of the formula (I) are not modified, that is, the N-terminal chemical group is still the ⁇ -amino group on the first amino acid (His) (- ⁇ 2), the chemical group at the C-terminus is the carboxyl group (-COOH) of the C-terminal Pro.
- the present invention also preferably acylates the carboxyl group of the C-terminal Pro, that is, -CO ⁇ 2.
- amino acids can be referred to in Table 1.
- an amino acid generally refers to an L-form amino acid.
- “Pharmaceutically acceptable salt” refers to a salt of some small molecule acidic or basic compounds with a polypeptide which generally increases the solubility of the polypeptide and which does not substantially alter the activity of the polypeptide.
- an acid which normally forms a salt with the polypeptide of the present invention is hydrochloric acid, phosphoric acid, sulfuric acid, acetic acid, succinic acid, maleic acid, citric acid, etc.
- a base capable of forming a salt with the polypeptide of the present invention is an alkali metal or alkaline earth metal hydroxide. Matter, ammonium, carbonate, etc.
- hypoglycemic effect of the polypeptides of the invention can be verified by routine experimental methods in the art, such as cytology experiments, animal experiments, and the like.
- an animal model of diabetes For example, db/db ll type diabetic mice, Goto Kokizaki type II diabetic rats, KK diabetic mice, alloxan artificially induced diabetic model mice. Through these animal experiments, it was found that the present invention is involved And the formula (I) Exendi polypeptide fragments have sustained hypoglycemic effects in vivo and can be used for the treatment of diabetes.
- another aspect of the present invention provides a pharmaceutical composition
- a pharmaceutical composition comprising the above-described E X endin 4 polypeptide fragment having the structure of formula (I), which can be used for the treatment of diabetes, particularly for the treatment of type 2 diabetes.
- the composition may contain one or more of the Exendin 4 polypeptide fragments of the invention, preferably containing only one Exendin 4 polypeptide fragment.
- the composition may contain one or more pharmaceutically acceptable diluents, excipients or carriers, preferably in unit dosage form such as tablets, films, pills, capsules (including sustained release or delayed release) Release forms), powders, granules, elixirs, syrups and lotions, sterile injectable solutions or suspensions, aerosol or liquid sprays, drops, injections, automatic injection devices or suppositories.
- diluents preferably in unit dosage form such as tablets, films, pills, capsules (including sustained release or delayed release) Release forms)
- powders granules, elixirs, syrups and lotions
- sterile injectable solutions or suspensions sterile injectable solutions or suspensions
- aerosol or liquid sprays drops
- injections automatic injection devices or suppositories.
- an oral, non-toxic, pharmaceutically acceptable inert carrier such as ethanol, glycerol, water or a combination thereof.
- WO2004035754A and WO2004036186A respectively disclose a sustained release dosage form which can be used for the inclusion of the Exendin4 polypeptide, and the active polypeptide of the formula (I) of the present invention is preferably used in such a dosage form (WO2004035754A and WO2004036186A are hereby incorporated by reference in entirety).
- the present invention also provides the use of the above compound or pharmaceutical composition for the preparation of a medicament for treating diabetes, preferably for the treatment of type 2 diabetes.
- the pharmaceutical compositions of this invention may be administered by methods of administration well known to those skilled in the art, such as oral, rectal, sublingual, pulmonary, transdermal, iontophoretic, vaginal and intranasal administration.
- the pharmaceutical compositions of the invention are preferably administered parenterally, such as subcutaneously, intramuscularly or intravenously.
- the medicament of the present invention is capable of modulating insulin to maintain blood glucose levels for a long time.
- the dose to be administered varies depending on the form of the preparation and the desired time of action and the condition of the subject to be treated, and the amount required for the actual treatment can be conveniently determined by the physician based on actual conditions (e.g., the patient's condition, body weight, etc.). For a typical adult, an amount of Ol-100 g is required daily, preferably in the range of 1-20 ⁇ ⁇ , more preferably 5-10 ⁇ ⁇ .
- the dosage can also be determined by reference to the dose of the commercially available exendin-4 polypeptide drug.
- the present invention also provides a method of chemically synthesizing the above polypeptide.
- the synthesis of polypeptides of known structure by chemical methods will be apparent to those skilled in the art. Detailed protocols can be performed by referring to the methods described in the following literature.
- solid phase synthesis of peptides can be found in JM Steward and JD Young, “Solid Phase Peptide Synthesis", Second Edition (Pierce Chemical Co., Rockford, Illinois (1984). )) and J. Meienhofer, Hormonal Proteins and Peptides, Vol. 2 (Academic Press, New York (1973)); for the synthesis of peptides by liquid phase, refer to E. Schroder and K.
- the polypeptide of the invention is preferably synthesized by a solid phase method.
- the invention provides a nucleic acid sequence of an Exendin4 polypeptide fragment, E.Coli's preferred codon. For example, if the nucleic acid encoding the polypeptide of the present invention is expressed in E. coli, the codon of the nucleic acid is preferably a preferred codon for E. coli.
- the invention also provides a method for preparing the above polypeptide by genetic engineering.
- the method comprises: a) fermenting a host cell capable of expressing a polypeptide of the invention; b) isolating and purifying the expression product.
- the method can further comprise the step of cleaving the expression product.
- genetically engineered methods produce intermediate polypeptides (20-60 amino acid residues), due to low expression levels and easy degradation after expression, the polypeptide gene is usually linked to the carrier protein and expressed as a fusion protein.
- the fusion protein is cleaved, isolated and purified chemically or enzymatically to obtain the polypeptide of interest. This method has low yield and complicated process.
- a plurality of expression genes are ligated in tandem according to the amino acid sequence of the polypeptide, expressed by an appropriate promoter, and then the tandem polypeptide is cleaved to prepare a polypeptide of interest.
- This method yields high yields.
- the present invention preferably employs the above-described gene tandem method for expressing the polypeptide of the present invention.
- tandem polypeptide cleavage a common method in the art can be used, for example, after the Lys residue is protected with Citranic Anhydride, the peptide chain is cleaved from the Arg in the middle of the tandem polypeptide by trypsin, and then the acid is removed.
- Citranic Anhydride a common method in the art can be used, for example, after the Lys residue is protected with Citranic Anhydride, the peptide chain is cleaved from the Arg in the middle of the tandem polypeptide by trypsin, and then the acid is removed.
- Citracononic acid group see J. D. Baxter.
- the method can These include: a) fermentation of bacterial cells capable of expressing the polypeptide of the invention; b) collection of bacterial cells; c) disruption of cells; d) extraction of tandem polypeptides; e) renaturation of the obtained polypeptide; 0 cleavage; The final polypeptide product is purified by chromatography.
- the expression product is not obtained, and only one polypeptide molecule in one fusion protein molecule accounts for about one-tenth of the fusion protein molecule.
- the yield is very low, and there are many kinds of polypeptides after such fusion protein cleavage, and it is difficult to separate and purify the polypeptide of interest.
- a plurality of polypeptide groups are expressed in tandem, and all of the expressed fusion protein molecules are polypeptides of interest, and the type of the polypeptide after cleavage is single, the yield is more than ten times that of the former, and separation and purification are easy.
- the X 3 of the present invention is Lyr, and the fusion protein cleaves only cleaves the Arg in the middle of the tandem molecule, thus maintaining the integrity of the E4(f) molecule.
- E4(f)Arg is an intermediate of E4(f). In fact, E4(f)Arg is rapidly removed by carboxypeptidase B in the blood to form E4(f), both of which are applicable.
- E4(f)Arg is rapidly removed by carboxypeptidase B in the blood to form E4(f), both of which are applicable.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 20 Hypoglycemic effect of the Exendin 4 polypeptide fragment of SEQ ID NO. 4 on alloxan artificial diabetes model mice.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 24 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 5 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- FIG. 25 Hypoglycemic effect of the Exendin 4 polypeptide fragment of SEQ ID NO. 5 on alloxan artificial diabetes model mice.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 29 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 6 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- FIG. 30 Hypoglycemic effect of the Exendin 4 polypeptide fragment of SEQ ID NO. 6 on alloxan artificial diabetes model mice.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 34 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 7 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG 39 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 8 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- FIG. 40 Hypoglycemic effect of the Exendin 4 polypeptide fragment of SEQ ID NO. 8 on alloxan artificial diabetes model mice.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 44 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 9 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 49 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 10 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- Figure 50 Hypoglycemic effect of the Exendin 4 polypeptide fragment of SEQ ID O.10 on alloxan artificial diabetes model mice.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 54 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 11 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- FIG. 59 Postprandial hypoglycemic effect of Exendin 4 polypeptide fragment of SEQ ID NO. 12 on Goto Kokizaki type II diabetic rats.
- Curve 1 indicates a blank control group and curve 2 indicates a drug administration group.
- Figure 60 Hypoglycemic effect of the Exendin 4 polypeptide fragment of SEQ ID NO. 12 on alloxan artificial diabetes model mice.
- Line 1 indicates the administration group
- line 2 indicates the blank control group
- the amino group of the amino group is 9-fluorenylmethoxycarbonyl (FmocM is protected; and the amino acid is side-chain protected: the side chain protecting group for Asp, Glu, Ser and Thr is tert-butyl, for Asn, Gin and His Is trityl (Trt), Lys and Trp are tert-butoxycarbonyl (Boc), and Arg is 2,2,5,7,8,-5-methylchroman-6-sulfonate Acyl (Pmc:).
- the protected amino acids are sequentially coupled and coupled for 40 minutes each time.
- dithiol/dimethyl sulfide/anisole (1: 1: lv/v/v)
- the peptide was reacted with trifluoroacetic acid (85%) at room temperature for 120 minutes to cut from the polymer support.
- the protective group was removed at the same time.
- the peptide was then precipitated with anhydrous diethyl ether, and then washed repeatedly with anhydrous diethyl ether to sufficiently remove the mercaptan.
- SEQ ID NO. 1; SEQ ID NO. 3; SEQ ID NO. 4; SEQ ID NO. 5; SEQ ID NO. 6; SEQ ID NO. 7; SEQ were obtained by the same method as in Example 1.
- Example 2 Genetic engineering production process of Exendin 4 variant polypeptide
- step 2 Add the EcoRI and Sail double-cleaved DNA fragment obtained in step 2) to the above double-digested plasmid, add 10 ⁇ ligase buffer 1 ⁇ 1, ⁇ ⁇ and ⁇ 4 ligase 2 ⁇ 1, and maintain at 16 °C for 12 hours.
- Competent cells were prepared by conventional methods using E coli JM 109, and the ligated samples were transformed, positive clones were picked, and plasmids were extracted.
- the plasmid having the variant polypeptide gene obtained in the step 3) is double-digested with Bgl II+Sal I to extract a DNA gene fragment containing the variant polypeptide. Further, the plasmid obtained in the step 3) was digested with BamHI + Sal l and then ligated with the DNA gene fragment containing the variant polypeptide to obtain a plasmid containing the tandem gene fragment of the variant polypeptide.
- the plasmid containing two tandem variant polypeptide gene fragments was digested with Bgl II+Sal I to obtain two gene-ligated fragments.
- the plasmid containing two tandem genes was digested with BamHI+Sal I. Further, the fragments in series with the two genes were ligated to form a plasmid in which four genes were ligated. This continues to yield 8 tandem genes or 16 or 32 gene tandem plasmids.
- the plasmid of the cloned variant polypeptide was mixed with the competent E coli JM 109 in an ice bath, maintained in an ice bath for 30 minutes, transferred to a 42 ° C water bath for 2 minutes, cooled in an ice bath, and coated (including 1%). Agarose, 5 () ⁇ ⁇ ampicillin / ml), overnight at 37 ° C. Colonies were picked and transferred to a LB medium shake flask (containing 50 ⁇ ⁇ ampicillin/ml) and cultured overnight at 37 ° C with shaking. Take 0.7 ml of the culture solution and add 0.3 ml of 50% glycerol (sterile), mix well, and store in a refrigerator at -85 °C for use.
- LB culture solution peptone 10 g, yeast powder 5 g, NaCl 10 g
- ampicillin was added (final concentration reached 100 ⁇ ⁇ / ⁇ 1), and the stored glycerin obtained in the step 5) was inoculated.
- Tube lml shake culture at 37 ° C overnight.
- the cells were collected by centrifugation at 5000 rpm, frozen at a low temperature of -35 ° C, and after thawing, 6 M guanidine hydrochloride was added, and the tandem polypeptide was extracted by homogenization, and the supernatant was collected by centrifugation at 18000 rpm.
- the supernatant was dialyzed against a buffer (10 mM pH 7.2 phosphate buffer, 0.1% hydrazine ethanol).
- the tandem polypeptide is isolated by centrifugation. Then, the cleavage is carried out according to the method of JDBaxter et al. (Nature 1980 285 456-461), that is, the tandem polypeptide is dissolved in water, Na2CO3 powder is added, the pH is maintained at 8.5, and the citric anhydride is added dropwise to completely dissolve the inclusion body to maintain pH8. .5, Stirring was continued for 2 hours at room temperature, then trypsin and carboxypeptidase B were added.
- the polypeptide was obtained, then adjusted to pH 3 with 3N hydrochloric acid, stirred for 4 hours, and the citraconic acid protecting group was removed. The whole process was monitored by HPLC, and finally the purified serial number of the present invention was SEQ ID NO. .2 Exendin 4 polypeptide fragment.
- SEQ ID NO. 1; SEQ ID NO. 3; SEQ ID NO. 4; SEQ ID NO. 5; SEQ ID NO. 6; SEQ ID NO. 7; SEQ were obtained by the same method as in Example 2, respectively.
- the Exendin 4 variant polypeptide sequence number corresponds to the gene fragment sequence number as follows:
- SEQ ID NO. 53 (2) SEQ ID NO. 54; (3) SEQ ID NO. 55; (4) SEQ ID NO. Gene fragment corresponding to the polypeptide sequence SEQ ID NO. 12:
- Exendin4 polypeptide fragment of the invention (abbreviated as E4 ( f)) 2 ⁇ each at 0, 30, 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, respectively, take 20 ⁇ 1 blood and measure with blood glucose test kit (purchased from Shanghai Institute of Biological Products) Blood sugar effect.
- E4 ( f) Exendin 4 polypeptide fragment SEQ ID NO. K SEQ ID NO. 2, SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 5, SEQ ID NO. 6, SEQ ID NO.
- Example 4 Hypoglycemic effect of Exendin 4 polypeptide fragment on db/db type II diabetic mice Take 50 g of db/db type II diabetic mice (purchased from Shanghai Animal Center of Chinese Academy of Sciences and Yangzhou University), fasting for 2 hours Exendin 4 polypeptide fragment 2 ⁇ ⁇ was injected subcutaneously, and 20 ⁇ l of blood was taken at 0, 30, 60, and 120 minutes, respectively.
- the blood glucose measurement kit purchased from Shanghai Institute of Biological Products was used to measure the effect of continuous blood glucose lowering. The results are as follows:
- Example 6 Hypoglycemic effect of Exendin 4 polypeptide fragment on alloxan artificial diabetes model mice
- mice weighing 20 g were divided into five groups, and 0.1 ml of alloxan (16 mg/ml) was injected through the tail vein. After 48 hours, the Exendin 4 variant polypeptide fragment of SEQ ID NO. 2 was subcutaneously injected. ⁇ , 20 ⁇ 1 of blood was taken at 0, 30, 60, and 120 minutes, respectively. Blood glucose measurement kit (purchased from Shanghai Institute of Biological Products) was used to measure hypoglycemic effect. All five groups showed good hypoglycemic effects, and the results are as shown:
- the results of IK SEQ ID NO. 12 are shown in Figures 11, 6, 16, 16, 21, 31, 36, 41, 46, 51, 56, and 61, respectively.
- Example 8 prepared in the same manner as in Example 1, respectively, to obtain SEQ ID NO. 6K SEQ ID NO. 62> SEQ ID NO. 63, SEQ ID NO. 64, SEQ ID NO. 65, SEQ ID NO. 66, SEQ ID NO. 67.
- Exendin 4 polypeptide fragment SEQ ID NO. 61, SEQ ID NO. 62, SEQ ID NO. 63 > SEQ ID NO. 64, SEQ ID NO. SEQ ID NO. 66, SEQ ID NO. 67, SEQ ID NO. 68, SEQ ID NO. 69 SEQ ID NO. 70, SEQ ID NO. 71, SEQ ID NO.
- Exendin 4 polypeptide fragment SEQ ID NO. 61, SEQ ID NO. 62, SEQ ID NO. 63, SEQ ID NO. 64, SEQ ID NO. 65, SEQ ID NO. 66, SEQ ID NO. 67, SEQ ID NO. 68.
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Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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BRPI0613849-7A BRPI0613849A2 (pt) | 2005-06-29 | 2006-06-29 | polipeptìdeo e sais ou ésteres farmaceuticamente aceitáveis, composição farmacêutica e uso do polipeptìdeo |
AU2006264162A AU2006264162A1 (en) | 2005-06-29 | 2006-06-29 | Exendin 4 polypeptide fragments and use thereof |
EP06753060A EP1908778A4 (en) | 2005-06-29 | 2006-06-29 | EXENDIN 4 POLYPEPTIDE FRAGMENTS AND CORRESPONDING USE |
JP2008518600A JP2008546816A (ja) | 2005-06-29 | 2006-06-29 | エキセンディン4ポリペプチドフラグメントおよびその使用 |
CA002613903A CA2613903A1 (en) | 2005-06-29 | 2006-06-29 | Exendin 4 polypeptide fragments and use thereof |
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CN200510040823.8 | 2005-06-29 | ||
CNB2005100408238A CN100429227C (zh) | 2005-06-29 | 2005-06-29 | Exendin4多肽片段 |
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WO2007000118A1 true WO2007000118A1 (fr) | 2007-01-04 |
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US (1) | US7608587B2 (zh) |
EP (1) | EP1908778A4 (zh) |
JP (1) | JP2008546816A (zh) |
KR (1) | KR100997835B1 (zh) |
CN (1) | CN100429227C (zh) |
AU (1) | AU2006264162A1 (zh) |
BR (1) | BRPI0613849A2 (zh) |
CA (1) | CA2613903A1 (zh) |
WO (1) | WO2007000118A1 (zh) |
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CN101029081B (zh) * | 2007-02-05 | 2011-01-12 | 上海国佳生化工程技术研究中心有限公司 | 重组的降糖肽及其生产菌株的构建和培养方法 |
EP2193142B1 (en) * | 2007-08-30 | 2015-01-07 | CureDM Group Holdings, LLC | Compositions and methods of using proislet peptides and analogs thereof |
WO2011063549A1 (zh) * | 2009-11-26 | 2011-06-03 | Wu Xiaoyan | 长效exendin4的类似物 |
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CN103193881A (zh) * | 2013-04-22 | 2013-07-10 | 中国药科大学 | 一种可口服给药的降糖多肽衍生物及其用途 |
CN103613657B (zh) * | 2013-11-28 | 2016-01-13 | 孙玉琨 | 缩短肽链的Exendin4及其基因工程应用 |
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Also Published As
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AU2006264162A1 (en) | 2007-01-04 |
BRPI0613849A2 (pt) | 2011-02-15 |
JP2008546816A (ja) | 2008-12-25 |
US20070037747A1 (en) | 2007-02-15 |
EP1908778A1 (en) | 2008-04-09 |
US7608587B2 (en) | 2009-10-27 |
CN100429227C (zh) | 2008-10-29 |
CN1724563A (zh) | 2006-01-25 |
CA2613903A1 (en) | 2007-01-04 |
EP1908778A4 (en) | 2009-08-12 |
KR100997835B1 (ko) | 2010-12-01 |
KR20070001798A (ko) | 2007-01-04 |
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