WO2004050116A1 - プロテアーゼ阻害剤 - Google Patents
プロテアーゼ阻害剤 Download PDFInfo
- Publication number
- WO2004050116A1 WO2004050116A1 PCT/JP2003/015007 JP0315007W WO2004050116A1 WO 2004050116 A1 WO2004050116 A1 WO 2004050116A1 JP 0315007 W JP0315007 W JP 0315007W WO 2004050116 A1 WO2004050116 A1 WO 2004050116A1
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- WIPO (PCT)
- Prior art keywords
- amino acid
- peptide
- acid sequence
- protein
- lactoferrin
- Prior art date
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Definitions
- the present invention relates to a cysteine protease inhibitor comprising, as an active ingredient, one or more mixtures selected from the group consisting of lactofurin, a partial peptide of lactofurin, and transferrin, and has a high osteoporosis or high malignancy. It is a cysteine protease inhibitor that can be used in prophylactic and therapeutic agents for calcium and other diseases, as well as in foods and drinks and feeds. Background art
- cysteine proteases Proteolytic enzymes having a thiol group at the active center are collectively referred to as cysteine proteases (thiol proteases).
- Cathepsin L, cathepsin B, and forceepsin K are one of the representative cysteine proteases along with calcium-dependent neutral protease (CAMP), papain, fusin, promelain, and the like.
- CAMP calcium-dependent neutral protease
- Substances having an inhibitory effect on these cysteine proteases include diseases in which cystinp-oralase is involved, such as muscular dystrophy, muscular atrophy, myocardial infarction, stroke, Alzheimer's disease, impaired consciousness and movement during head injury.
- bone resorption can be mentioned as one of the main causes. This can be further divided into two causes as follows. One is due to calcium absorption and impaired deposition; more specifically, it is related to calcium supply, transfer, absorption, and deposition; vitamin D derivatives, female hormones (estrogens), etc. Is considered to be involved.
- the other is to promote the degradation of collagen, which is a bone-supporting tissue, and it contains cysteine proteinases secreted from lysosomes in osteoclasts, especially bone collage caused by cathepsin L, cathepsin B, and cathepsin K. Genolysis is the main cause.
- These cathepsins L and B, secreted from lysosomes in osteoclasts promote the breakdown of collagen in bone tissue, so that old bone is dissolved and calcium is released to the blood along with hydroxyproline. Therefore, by inhibiting the ability of cathepsin L, cathepsin B, and cathepsin K to degrade collagen, excessive bone breakdown can be prevented, and thus osteoporosis can be treated.
- Estrogen, anabolic hormone, calcium, vitamin D, calcitonin, bisphosphonate, etc. are known as therapeutic agents for these osteoporosis.
- osteoporosis therapeutic agents that have the mechanism of action of so-called cysteine protease inhibition of cathepsin L inhibition, cathepsin B inhibition, or cathepsin K inhibition
- cysteine protease inhibition of cathepsin L inhibition, cathepsin B inhibition, or cathepsin K inhibition the development of osteoporosis treatment agents using several cysteine protease inhibitors is underway.
- Japanese Unexamined Patent Publication (Kokai) No. 7-179496 Japanese Patent Application Laid-Open Publication No. 2000-250502
- Hypercalcemia is a metabolic disorder in which serum calcium levels are above normal levels and are common in oncology patients. If left unchecked, the life expectancy of the patient is said to be about 10 days. Many of the causes are bone metastases of the tumor. When the tumor spreads to bone, bone destruction occurs and calcium is released into the blood. This calcium is processed by the kidney, but when the speed of bone destruction exceeds the processing capacity of the kidney, hypercalcemia occurs.
- a treatment method a method of promoting calcium excretion from the kidney by using infusion of physiological saline combined with furosemide is used.
- calcitonin which is a therapeutic agent for osteoporosis is known. That is, it can be said that a therapeutic agent for osteoporosis that suppresses bone resorption is also effective as a therapeutic agent for malignant neoplastic hypercalcemia.
- the present inventors have already disclosed the following cysteine protease inhibitors that can be used for such a purpose.
- cystine-oral thease inhibitors that can be used as safe materials without antigenicity has been desired.
- protease inhibitors exist in breast milk.
- Known protease inhibitors contained in breast milk include 1-antichymotrypsin, 1-antitrypsin, inter-inhibit 1-trypsin inhibitor, 2-antiplasmin, 2 —Breast milk also contains trace amounts of inhibitors such as macroglobulin, antithrombin III, and anti-leuco protease (Isao Kiyozawa, “Nutrition in Breast Milk”, Kanehara Publishing, pp. 80-81).
- a novel cysteine protease inhibitor having a sugar chain derived from bovine colostrum and having a molecular weight of about 57 kDa JP-A-7-2896
- Novel protein having a molecular weight of 16 ⁇ 2 kDa or 13 ⁇ 2 kDa derived from human milk and a method for producing the same (JP-A-10-80281)
- Lactoferrin (lactoferrin; hereinafter sometimes abbreviated as Lf) is an iron-binding glycoprotein with a molecular weight of about 8 OkDa, which is mainly contained in breast milk, and is found in Escherichia coli, Candida, Clostridium, Staphylococcus, etc. It is known to exhibit antibacterial activity against harmful microorganisms (Journal of Pediatrics, Vol. 94, Page 1, 1979, and Journal of Dairy Science, Vol. 67, page 60, 1989. It is also widely used as a therapeutic agent for diseases as a milk protein having various effects.
- Lactoferrin is a protein derived from milk that is highly safe, can be used for a long period of time, is almost tasteless and odorless, and has high versatility as an additive for various foods, pharmaceuticals and feeds. It is protein.
- lactofurin is used as an agent for treating diseases.
- IgA production promoter Japanese Unexamined Patent Publication No. Hei 6-32 743
- a bone enhancer containing iron-lactoferrin as an active ingredient is effective for the prevention and treatment of bone diseases (Japanese Patent Application Laid-Open No. 2000-218586).
- This technology administers iron-lactofurin, which is a combination of iron and lactofurin, as an active ingredient, and supplies iron, a coenzyme of enzymes involved in the hydroxylation of proline and lysine, which are precursors of collagen, a bone matrix. And enhance collagen production.
- cysteine protease inhibitors have been found so far, and some cysteine protease inhibitors have also been found in animal cells, blood, urine, and milk. Proteinaceous cysteine protease inhibitors are collectively referred to as cyseutin.
- the cis-citin family is known to have a common active site, and its sequence has been clarified (Osamu Hayaishi, "Proteases and their inhibitors", 1st edition, 1st print, 104th to 115th pages, 1993).
- lactoferrin and its partial peptide and transferrin have cysteine protease inhibitory activity, and that lactoferrin and transferrin have homology with the common active site sequence of the cis aminotin family. It was also not known to have a region with. Furthermore, there has been no known lactoferrin and its partial peptide, or a preventive or therapeutic agent for bone disease whose mechanism of action is cysteine protease inhibition by transferrin. Disclosure of the invention
- the present invention can be widely used as a food material, and can be used as a prophylactic / therapeutic agent for osteoporosis or ningy neoplastic hypercalcemia, etc. It is intended to provide a highly potent cysteine protease inhibitor.
- the present inventor has developed a cysteine that can be used as a safe material without antigenicity.
- protease inhibitors it was found that lactoferrin, a protein derived from milk, a peptide fragment derived from lactoferrin, and transferrin have cysteine protease inhibitory activity, and the present invention was completed.
- the gist of the present invention is as follows (1) to (12).
- a cysteine protease inhibitor comprising, as an active ingredient, one or a mixture of lactoferrin, a partial peptide of lactoferrin, and transferrin.
- a protein or peptide having at least the amino acid sequence of amino acids No. 676-692, wherein one or more amino acids are substituted or a protein or a peptide containing cysteine protease inhibitory activity, comprising a cysteine proteinase, a deletion, an addition or an inversion.
- cysteine protease inhibitor according to any one of (1) to (3) above, which is a therapeutic agent for preventing or treating a disease associated with cysteine protease.
- the disease associated with cysteine protease is osteoporosis or malignant tumor
- a food or drink composition or feed composition comprising the cysteine protease inhibitor according to any one of (1) to (5).
- a method for treating a disease involving cysteine protease which comprises administering the cysteine protease inhibitor according to any one of (1) to (5) to a patient.
- the lactoferrin and / or transferrin is one or more kinds of mixtures selected from the group consisting of metal-saturated, metal-saturated, and apo-type.
- lactoferrin and / or the partial peptide of lactoferrin is a mixture of one or more of the following proteins or peptides shown in (a) to (d): .
- Cysteine protease inhibitor involves cysteine protease The use according to any one of the above (8) to (10), which is an agent for preventing or treating a disease. (12) The use according to (11), wherein the disease associated with cysteine protease is osteoporosis or malignant neoplastic hypercalcemia. BRIEF DESCRIPTION OF THE FIGURES
- Fig. 1 is a diagram (photograph) showing the detection of reverse zymography of red milk protein.
- FIG. 2 is a graph showing the cystine protease inhibitory effect of human lactoferrin on cysteine protease.
- FIG. 3 shows a partial peptide of human lactoferrin (human lactoferrin peptide Y679-K695) and a partial peptide of ⁇ -lactoferrin ( ⁇ -sylactoferin peptide ⁇ 676- ⁇ 692) produced in Example 1 and the sequence listing.
- SEQ ID NO: 3 a peptide having the amino acid sequence of amino acids 666-682 (human transpeptide peptide 666-R682), and the amino acid shown in SEQ ID NO: 4 in the sequence listing
- FIG. 4 is a view showing an amino acid sequence of a peptide having an amino acid sequence of amino acids Nos. 672 to 6888 ( ⁇ transferrin peptide Y672-R688) among the sequences.
- FIG. 4 shows the cysteine protease inhibitory effect of human lactoferrin peptide Y679-K695 on cysteine protease.
- FIG. 5 is a graph showing the cysteine protease inhibitory effect of transferrin on cysteine protease.
- lactoferrin eg, human 'lactoferrin having an amino acid sequence described in Siss-Prot Accession No .: P02788, Swiss-Prot Accession No .: P-lactoferrin having an amino acid sequence described in P24627, Swiss-Prot Accession No .: Goat 'lactoferrin having an amino acid sequence described in Q29477, Swiss-Prot Accession No .: Amino acid sequence described in 077811 Lactoferrin), a partial peptide of lactoferrin, and transferrin (for example, a human having an amino acid sequence described in Swiss-Prot Accession No .: P02787.
- lactoferrin eg, human 'lactoferrin having an amino acid sequence described in Siss-Prot Accession No .: P02788, Swiss-Prot Accession No .: P-lactoferrin having an amino acid sequence described in P24627, Swiss-Prot Accession No .: Go
- Lactofurin used in the present invention may be commercially available lactofurin, colostrum, transitional milk, normal milk, terminal milk, or colostrum of mammals (for example, human, oak, goat, sheep, poma etc.).
- Lactoferrin obtained by separating skim milk, whey, etc., which is a processed product of milk, from the raw materials by a conventional method such as ion exchange chromatography can be used.
- a commercially available lactofurin manufactured on an industrial scale for example, manufactured by Morinaga Milk Industry Co., Ltd.
- lactoferrin produced by microorganisms, animal cells, transgenic animals and the like by genetic engineering techniques.
- the metal content in lactoferrin is not particularly limited, and in the present invention, apo-lactoferrin obtained by removing lactoferrin with hydrochloric acid, citric acid or the like; Metal-saturated lactoferrin with a saturation of 100% obtained by chelating with a metal such as copper, zinc or manganese; and a metal part in a state where the metal is bound with various saturations of less than 100% Any one or a mixture of two or more selected from the group consisting of saturated lactoferrin can be used.
- the method for producing the partial lactofurin peptide used in the present invention includes a method for producing the lactofurin by hydrolyzing it with an acid or protease by a known method, and a recombinant method using a genetic engineering technique. Examples include a method for producing a synthetic peptide by synthesizing a peptide, a method for producing a synthetic peptide by chemical synthesis, and the like. In addition, when the method of producing by hydrolysis is used, The partial peptide of toferin may be used in a form contained as a mixture in the hydrolyzate, or may be used in a form purified by HPLC or the like according to a conventional method.
- lactofurin or a partial peptide of lactoferrin used in the present invention is human lactoferrin having the amino acid sequence of SEQ ID NO: 1 in the sequence listing, or the amino acid sequence of SEQ ID NO: 1 in the sequence listing.
- examples thereof include a protein or a peptide having an amino acid sequence of at least amino acid numbers 679 to 695.
- the amino acid sequence of amino acid sequence of SEQ ID NO: 2 in the sequence listing, or the amino acid sequence of SEQ ID NO: 2 in the sequence listing at least the amino acid sequence of amino acid sequence of 676-692 Protein or peptide having the same.
- amino acid numbers 1 to 19 are signal sequences.
- lactoferrins or partial peptides of lactoferrin have a cystine oral protease inhibitory activity, and thus can be used as the cystine protease inhibitor of the present invention.
- lactofurin since full-length lactofurin has cysteine protease inhibitory activity, it includes amino acids 679-1695 of SEQ ID NO: 1 in the sequence listing, and is located at the N-terminal side or C-terminal side or both. It contains a peptide having an extended amino acid sequence and an amino acid number 676-1692 of SEQ ID NO: 2 in the sequence listing, and the sequence is extended to the N-terminal side or the C-terminal side or both. Peptides having an amino acid sequence are also considered to have cysteine protease inhibitory activity.
- these proteins and peptides can be obtained by chemical synthesis based on the amino acid sequence containing the cysteine proteinase-inhibiting region according to the present invention since the region has been clarified by the present invention. You can also get it.
- an appropriate primer is prepared based on the base sequence encoding the amino acid sequence containing the region, and the primers are used to convert the cDNA containing the target base sequence into type III and to perform the base sequence by PCR or the like. It can be obtained by amplifying and expressing the obtained nucleotide sequence using an appropriate expression system.
- one or more common genes may differ depending on the species, genus, individual, etc. There is naturally a mutation such as substitution, deletion, insertion, addition, or inversion of one or more bases at the position of, and mutation also occurs in amino acids of a protein encoded by a gene having such a mutation. May have occurred. Lactofurin and partial peptides of lactofurin which can be used in the present invention include those containing such mutations as long as the cystine protease inhibitory activity is not impaired.
- the lactofurin or the lactoferrin partial peptide that can be used in the present invention includes, among the amino acid sequences described in SEQ ID NO: 1 in the sequence listing, at least the amino acid sequence of amino acids 699-169.
- a protein or peptide having cystine protease inhibitory activity, including deletion, insertion, addition or inversion, is exemplified.
- substitution, deletion, insertion, addition or inversion of one or more amino acids is at least a protein or peptide having the amino acid sequence of the above-mentioned amino acid number between a protein and a cysteine protease. It does not affect the steric interaction of cysteine and can be set arbitrarily within a range that does not impair the cystine protease inhibitory activity.
- the term “plurality” refers to the amino acids of amino acid numbers 679 to 695 in the amino acid sequence described in SEQ ID NO: 1 in the sequence listing, and the amino acid number 6 in the amino acid sequence described in SEQ ID NO: 2 in the sequence listing.
- the number varies depending on the position and type of the amino acid residue in the three-dimensional structure of the protein, but is, for example, 2 to 5, preferably 2 to 3, and more preferably 2 .
- substitution in the amino acid sequence is the same as that in the amino acid sequence of SEQ ID NO: 1 in the amino acid sequence described in SEQ ID NO: 1 in the amino acid sequence of amino acids 686-1690, and the amino acid sequence in SEQ ID NO: 2 in the sequence listing.
- substitution within a range that does not change the type of amino acid is desirable. That is, it is desirable that the amino acid in the sequence and the amino acid that substitutes for the amino acid are amino acids of similar type in structural classification.
- the amino acid in the above sequence is an acidic amino acid or an acidic amino acid amide
- the amino acid is a substitution with any one of aspartic acid, glutamic acid, asparagine, and glutamic acid, and is a basic amino acid.
- amino acids in the range other than amino acids 679-1695, or in the amino acid sequence described in SEQ ID NO: 2 in the sequence listing may include one or more substitutions / deletions.
- the term “plurality” differs depending on the position and type of the amino acid residue in the three-dimensional structure of the protein, but is, for example, 2 to 10, preferably 2 to 5, and more preferably 2 to 3. .
- lactofurin or a partial peptide of lactofurin that can be used in the present invention includes, among the amino acid sequences described in SEQ ID NO: 1 in the sequence listing, a protein having at least the amino acid sequence of amino acids 699 to 6995. Or a peptide or a protein or peptide having at least the amino acid sequence of amino acids Nos. 676-692 in the amino acid sequence of SEQ ID NO: 2, and 80% or more, preferably 90% or more, of the amino acid sequence. % Or more, more preferably 95% or more, and a protein or peptide having cysteine protease inhibitory activity is also exemplified.
- nucleotide sequence encoding a protein or peptide substantially the same as the lactoferrin protein or the partial peptide of lactoferrin as described above may be obtained by substituting, deleting, It can be obtained by modifying the base sequence to include insertion, addition, or inversion.
- the modified base sequence as described above can also be obtained by a conventionally known mutation treatment.
- the nucleotide sequence having the mutation as described above is expressed in a suitable cell, and the system is assayed by the method for measuring cysteine protease inhibitory activity described in Test Examples or Examples of the present invention.
- a base sequence encoding a protein or peptide substantially identical to the lactoferrin protein or the partial peptide of lactoferrin can be obtained.
- transferrin or a partial peptide of transferrin can also be used.
- the transferrin used in the present invention may be a commercially available transferrin, or milk or blood of mammals (eg, human, oak, goat, shed, poma, etc.) as a raw material. Transferrin obtained by separation by a chromatography method or the like can be used. Furthermore, it is also possible to use transpulin produced by microorganisms, animal cells, transgenic animals and the like by genetic techniques.
- the metal content in transferrin is not particularly limited.
- apotransferrin obtained by removing iron from transferrin with hydrochloric acid, citric acid, or the like;
- Metal-saturated transferrin with 100% saturation obtained by chelating phosphorus with metals such as iron, copper, zinc, and manganese; and metals bound at various saturations less than 100%
- Any one or a mixture of two or more selected from the group consisting of partially saturated transpurin in a metallic state can be used.
- partial peptides of transferrin may also be used.
- An amino acid sequence (amino acid numbers 679-1695 of SEQ ID NO: 1 and amino acid numbers 676-692 of SEQ ID NO: 2) deduced to be the cysteine protease inhibitory activity region of lactoferrin;
- a comparison of the amino acid sequences of transferrin shows that the amino acid sequence of human transferrin shown in SEQ ID NO: 3 has a region of amino acids 666-682 (human transferrin peptide Y666-R682) and SEQ ID NO: 4.
- the method for producing the partial peptide of transferrin used in the present invention includes a method for producing the transferrin by hydrolyzing the transferrin with an acid or a protease by a known method, and a method for synthesizing a recombinant peptide using a genetic engineering technique. And a method for producing a synthetic peptide by chemical synthesis.
- the partial peptide of transferrin of the present invention may be used in the form of a mixture in the hydrolyzate, or may be purified by HPLC or the like according to a conventional method. You may use it.
- Preferred forms of transferrin or partial peptides of transferrin used in the present invention include human transfulin having the amino acid sequence of SEQ ID NO: 3 in the sequence listing, or a sequence listing that is the amino acid sequence of human transferrin.
- amino acid sequences described in SEQ ID NO: 3 there may be mentioned proteins or peptides having at least the amino acid sequence of amino acids No. 66 to 682.
- amino acid sequences described in SEQ ID NO: 4 in the sequence listing which is the amino acid sequence of the amino acid sequence described in SEQ ID NO: 4 in the sequence listing, or A protein or peptide having at least the amino acid sequence of amino acid numbers 672 to 688 can be exemplified.
- the amino acid sequence of amino acids 1 to 19 is a signal sequence.
- amino acid sequence of amino acid No. 3 a peptide comprising the amino acid sequence of amino acids No. 66 to 682, and in the amino acid sequence described in SEQ ID No. 4, amino acids No. 672 to The peptide having the amino acid sequence of 688 is the amino acid sequence of SEQ ID NO: 1 in the sequence listing, which is the amino acid sequence of human lactoferrin, which is a cysteine protease inhibitory activity region clarified by the present invention.
- amino acid sequences described in SEQ ID NO: 2 in the sequence listing which is the amino acid sequence of No. 679-1695 and the amino acid sequence of dilactoferrin, the amino acid sequence of amino acid No.
- cysteine protease inhibitory activity As it has an activity, it contains an amino acid sequence of amino acid numbers 666-682 of the amino acid sequence described in SEQ ID NO: 3, and has an amino acid sequence extended to the N-terminal side or the C-terminal side or both.
- a peptide having an acid sequence and an amino acid sequence comprising the amino acid number 672-268 of SEQ ID NO: 4 and having an amino acid sequence having an extended sequence on the N-terminal side or the C-terminal side or both. are also considered to have cysteine protease inhibitory activity.
- these proteins and peptides can be obtained by chemical synthesis based on the amino acid sequence containing the region, since the region presumed to be the cysteine proteinase inhibitory region has been clarified by the present invention. It can also be obtained by genetic recombination technology or the like.
- an appropriate primer is prepared based on the nucleotide sequence encoding the amino acid sequence containing the region, and the primers are used to convert the cDNA containing the target nucleotide sequence into type III and to perform the nucleotide sequence by PCR or the like. It can be obtained by amplifying and expressing the obtained nucleotide sequence using an appropriate expression system.
- mutations such as substitution, deletion, insertion, addition, or inversion of one or more bases at one or more positions are naturally present in ordinary genes, depending on the species, genus, individual, etc.
- mutations may also occur in amino acids of proteins encoded by genes having such mutations.
- Transferrin and partial peptides of transferrin that can be used in the present invention include those containing such mutations as long as the cysteine protease inhibitory activity is not impaired.
- transferrin or a partial peptide of transferrin that can be used in the present invention includes, among the amino acid sequences described in SEQ ID NO: 3, a peptide consisting of at least the amino acid sequence of amino acids 666-682, or A protein or peptide having at least the amino acid sequence of amino acids Nos. 672 to 688 in the amino acid sequence of SEQ ID NO: 4, wherein one or more amino acids are substituted, deleted, inserted, added or reversed. And proteins having a cysteine protease inhibitory activity.
- substitution, deletion, insertion, addition or inversion of one or more amino acids is at least a protein or peptide having an amino acid sequence of the amino acid number and a cysteine protease. Does not affect steric interactions and impairs cysteine protease inhibitory activity It can be set arbitrarily within a range that does not exist.
- the term "plurality” refers to the amino acids of amino acid numbers 666-682 in the amino acid sequence described in SEQ ID NO: 3 and the amino acids 6772-6 in the amino acid sequence of SEQ ID NO: 4 in the sequence listing.
- the number varies depending on the position and type of the amino acid residue in the tertiary structure of the protein, but, for example, 2 to 5, preferably 2 to 3, and more preferably 2.
- substitution in the amino acid sequence is the same as that in the amino acid sequence of SEQ ID NO: 3 in the amino acid sequence of SEQ ID NO: 3, amino acids of amino acid numbers 673-667, and the amino acid sequence of SEQ ID NO: 4 in the sequence table.
- substitution of amino acids 679 to 683 is desirably performed within a range that does not change the type of amino acid. That is, it is desirable that the amino acid in the sequence and the amino acid that substitutes for the amino acid are similar types of amino acids in structural classification.
- amino acid in the above sequence is an acidic amino acid or an acidic amino acid amide
- amino acid is substituted with any of aspartic acid, glutamic acid, asparagine, or glumin; when the amino acid is a basic amino acid, lysine is used.
- amino acids in the range other than the amino acids of 666 to 682, and among the amino acids in SEQ ID NO: 4 in the sequence listing In the range of amino acids other than 88 amino acids, one or more substitutions / deletions may be included. In this case, the number differs depending on the position and type of the amino acid residue in the three-dimensional structure of the protein, but, for example, 2 to 10, preferably 2 to 5, more preferably 2 to 3 is there.
- transferrin or a partial peptide of transferrin that can be used in the present invention includes, among the amino acid sequences described in SEQ ID NO: 3 in the sequence listing, a protein having at least the amino acid sequence of amino acids 666-682.
- a peptide or the amino acid sequence of SEQ ID NO: 4; Has a homology of 80% or more, preferably 90% or more, more preferably 95% or more in the amino acid sequence with a protein or peptide having an amino acid sequence of A protein or peptide having protease inhibitory activity is also exemplified.
- the nucleotide sequence encoding a protein or peptide substantially identical to the transferrin protein or partial peptide of transferrin as described above can be obtained, for example, by the method of site-directed mutagenesis. It can be obtained by modifying the nucleotide sequence to include substitution, deletion, insertion, addition, or inversion.
- the modified base sequence as described above can also be obtained by a conventionally known mutation treatment.
- transferrin protein By expressing the nucleotide sequence having the mutation as described above in a suitable cell, and examining the cysteine protease inhibitory activity by the method for measuring the cysteine protease inhibitory activity described in Test Examples or Examples of the present invention, transferrin protein Alternatively, a nucleotide sequence encoding a protein or a peptide substantially identical to the partial peptide of transrin can be obtained.
- lactoferrin In the cysteine protease inhibitor of the present invention, lactoferrin, a partial peptide of lactoferrin, transferrin or a partial peptide of transferrin can be used alone or in combination of two or more. is there. In addition, one kind of the partial peptide of lactofurin can be used alone, or a plurality of kinds can be used in combination. Further, the partial peptides of transfusin can be used alone or in combination of two or more.
- Lactofurin, a partial peptide of lactofurin, or transferrin that can be used in the present invention has an inhibitory activity against cystine stomata such as cathepsin B, L ⁇ S, and papain. Cystine protease inhibitory activity can be measured according to the method of Barrett et al. In the test examples or examples of the present invention, the measurement method will be described in detail.
- the cysteine protease inhibitor of the present invention uses lactoferrin, a partial peptide of lactoferrin, or transperin, and one or more of these are known. It can be produced by combining with a pharmaceutically acceptable pharmaceutical carrier.
- the dosage unit form of the preparation of the present invention is not particularly limited and can be appropriately selected depending on the purpose of treatment. Specifically, tablets, pills, powders, solutions, suspensions, emulsions, granules, capsules, capsules, Examples of the preparation include a lip, suppository, injection, ointment, patch, eye drop, nasal drop and the like.
- excipients In the formulation, excipients, binders, disintegrants, lubricants, stabilizers, flavoring agents, diluents, surfactants, solvents for injections, etc., which are commonly used as pharmaceutical carriers for ordinary pharmaceuticals, are added. Agents can be used.
- lactofurin, a partial peptide of lactofurin, or transferrin contained in the preparation of the present invention is not particularly limited, and may be appropriately selected.
- each of them is usually 0.005 to 60% by mass in the preparation.
- the content is 0.05 to 50% by mass.
- a disease associated with cysteine protease can be treated.
- the patient may be a human or a mammal other than a human.
- the administration method of the preparation of the present invention is not particularly limited, and is determined according to various preparation forms, the age and sex of the patient, other conditions, the degree of symptoms of the patient, and the like.
- the dose of the effective ingredient of the preparation of the present invention is appropriately selected depending on the usage, the age of the patient, the sex, the degree of the disease, other conditions, and the like.
- the amount of lactofurin, lactoferrin partial peptide or transferrin as the active ingredient is in the range of 0.1 to 120 O mg / kg / day, preferably 10 to 50 O mg / kg / day. It is recommended to use the dose as a guide, and it can be administered once a day or divided into multiple doses.
- the cysteine protease inhibitor of the present invention may be a disease involving cysteine protease, such as allergy, muscular dystrophy, muscular atrophy, myocardial infarction, stroke, Alzheimer's disease, multiple sclerosis, cataract, osteoporosis, and malignant hypercalcemia.
- Cysteine protease inhibition of the present invention The agent may be used alone, or may be used in combination with a known agent for preventing or treating the above-mentioned disease, or the above-mentioned agent for inhibiting bacterial-virus growth. When used in combination, the effect of preventing or treating the above-mentioned disease or the effect of suppressing the growth of bacteria and viruses can be enhanced.
- the known preventive / therapeutic agent for the disease or the bacterial / virus growth inhibitor used in combination may be contained as an active ingredient in the inhibitor of the present invention, or may be contained in the inhibitor of the present invention. Instead, they may be combined and commercialized as separate drugs and combined at the time of use.
- the food and drink composition of the present invention can be produced by adding lactofurin, a partial peptide of lactoferrin, or transfurin to a raw material of food or beverage, and can be taken orally.
- lactofurin a partial peptide of lactoferrin, or transfurin
- the raw materials those used in ordinary beverages and foods can be used.
- the food and drink composition of the present invention can be prepared in the same manner as a normal food and drink composition except that a cysteine proteinase inhibitor is added.
- Beverages such as soft drinks, carbonated drinks, nutritional drinks, fruit drinks, and lactic acid bacteria drinks (including concentrated stock solutions of these drinks and powder for preparation); ice cream, sorbet, shaved ice Confectionery such as candy, chewing gum, candy, gum, chocolate, tablet confectionery, snacks, biscuits, jelly, jam, cream, baked confectionery: processed milk, milk drinks, fermented milk, butter, etc. Food; bread; enteral nutritional food, liquid food, milk for childcare, sports drinks, and other functional foods.
- the amount of lactofurin, lactofurin partial peptide or transpurin to be added is appropriately determined depending on the form of the food and drink composition, but is usually set in a normal food or drink. It may be added in an amount of 0.5 to 60% by mass, preferably 0.05 to 50% by mass.
- the feed composition of the present invention can be produced by adding lactofurin, a partial peptide of lactofurin or transferrin to the feed, and orally administered to general mammals, livestock, fish farming and pets. It is possible to do.
- Examples of the form of the feed composition include pet food, livestock feed, fish feed, etc., and are mixed with cereals, cakes, bran, fish meal, bone meal, fats and oils, skim milk powder, whey, mineral feed, yeast, etc.
- the feed composition of the present invention can be produced.
- the amount of lactoferrin, lactoferrin partial peptide, or transfurin to be added is appropriately set depending on the form of the feed composition, but is usually 0.05 to 6 in ordinary feed. It may be added so as to be 0% by mass, preferably 0.05 to 50% by mass.
- the food or drink composition or feed composition of the present invention can be a food or drink composition or feed composition showing the efficacy for the prevention or treatment of the following diseases. That is, it is possible to indicate that the disease is related to prevention or treatment of a disease associated with cysteine protease, for example, osteoporosis or malignant neoplastic hypercalcemia.
- a disease associated with cysteine protease for example, osteoporosis or malignant neoplastic hypercalcemia.
- display means an act of informing a consumer of the above-mentioned effects, and for example, the above-mentioned effects are applied to a food or drink composition or a feed composition of the present invention, or to packaging, advertising, or the like of a product.
- the present inventor used a technique called “reverse zymography” as a method for detecting a protease inhibitor, and detected a protease inhibitor present on a gel of SDS polyacrylamide gel electrophoresis.
- Inverse zymography is based on the reverse method of ordinary zymography, and the basic principle is as follows. That is, a sample containing a protease inhibitor is applied to an SDS polyacrylamide gel containing gelatin, and after electrophoresis, the gel is immersed in a protease solution to degrade proteins in the gel. By this operation, the portion where the inhibitor is present inhibits the activity of the protease, so gelatin is prevented from being degraded by the protease, and it can be identified by staining it with the staining solution. Become.
- One method of inverse zymography in the present invention is as follows.
- SDS polyacrylamide gel electrophoresis using 12.5% SDS polyacrylamide gel containing 0.1% gelatin — Sometimes abbreviated as PAGE.
- PAGE electrophoresis
- the gel was washed by immersing it in a 2.5% Triton X-100 solution for 45 minutes, and then immersing in distilled water for another 45 minutes three times to wash the gel.
- This gel was immersed in 100 ml of 0.025 M acetate buffer (pH 5.5) containing lmg papain (31 units / ml), and kept at 37 ° C for 10 hours to digest gelatin.
- the gel is washed with distilled water, stained with a staining solution (0.025% Kumasi 1-Brilliant 'Bul 1 (CBB) R-250, 40% methanol, 7% acetic acid aqueous solution) for 1 hour, and then decolorized solution (40% Decolorization was carried out with methanol and a 10% aqueous solution of acetic acid.
- a staining solution 0.25% Kumasi 1-Brilliant 'Bul 1 (CBB) R-250, 40% methanol, 7% acetic acid aqueous solution
- FIG. Figure 1 shows the results of one pattern of inverse zymography.
- lane 1 is a normal SDS-PAGE pattern of total protein in milk
- lane 2 is a reverse zymography pattern of total protein in milk
- lane 3 is gelatin on milk protein gel in milk.
- lane 4 reverse zymography pattern of ⁇ lactoferrin
- lane 5 reverse zymography without gelatin in ⁇ lactoferrin gel (control)
- the arrow in the figure indicates the migration position of the lactofurin derived from sea urchin (molecular weight 78 kDa) by SDS-PAGE.
- Z-Phe-Arg-MCA (Benzyloxycarbonyl-L-Phenylalanyl-L-Arginine 4-Methyl-Coumaryl-7-Amide, final concentration 20 mM: manufactured by Peptide Research Institute) was added, and cysteine proteinase (this test) For each sample, add a solution (final concentration: 15 miits / ml) of papain, cathepsin B, force tepsin L, and cathepsin S (manufactured by Wako Pure Chemical Industries, Ltd.) and mix at 37 ° C.
- the fluorescence intensity (excitation wavelength: 370 nm, emission wavelength: 460 nm) of AMC (7-Amino-4-Methyl-Coumariii) released from the quenched substrate is measured with a fluorescence spectrophotometer. (Manufactured by Hitachi, Ltd.).
- Table 1 shows the cysteine proteinase inhibitory effect of dicylactoferrin on papain, cathepsin B, cathepsin L, and cathepsin S.
- the cystinp-oral protease activity of papain and cathepsin L was completely inhibited when the concentration of dicylactoferrin reached 10 to 16 M.
- cis Tin Protea Ichizekatsu of Katebushin B and Katebushin S is the concentration of ⁇ Chirac Tofueri emissions inhibited more than 70% when it reaches 10_ 5 M, was completely inhibited at a concentration of 10- 4 M. Therefore, sylactofurin is: It was found to have cysteine protease inhibitory activity against pine, cathepsin B, cathepsin L, and cathepsin S.
- Protease 10 "8 M 10- 7 M 10 " 6 M 10 _5 M 10 "4 M papain 0 40 100 100 100 ⁇ shea Katebushin L 0 20 100 100 100 100 easy Bok Feline Katebushin B 0 0 10 70 100
- cystine proteases Commercially available human lactoferrin (Sigma) was used as a test sample, and papain, cathepsin B, cathepsin L, and cathepsin S (all commercial products: manufactured by Wako Pure Chemical Industries) were used as cystine proteases.
- the cysteine protease inhibitory activity was measured in the same manner as in the method for measuring cystine protease inhibitory activity described in Test Example 3.
- FIG. 2 shows the cysteine proteinase inhibitory effects of human lactoferrin on papain, cathepsin B, cathepsin L, and forceepsin S.
- Shisutinpu port tare Ichize activity of papain and Katebushin L was inhibited almost completely when the concentration of human Lactobacillus Hue phosphorus reaches 1 0 one 6 M.
- cis Tin protease one peptidase activity Katebushin B and Katebushin S is inhibited 80% or more when the concentration of human Lactobacillus Hue phosphorus reached 1 0- 5 M, almost completely at a concentration of 1 0 one 4 M Was inhibited. Therefore, it was found that human lactoferrin has cysteine protease inhibitory activity against papain, cathepsin B, cathepsin L, and cathepsin S.
- a peptide having an amino acid sequence of amino acid numbers 6979 to 6995 among the amino acid sequences described in SEQ ID NO: 1 in the sequence listing, which was produced in Example 1 described later (hereinafter referred to as human lactophene). Described as phosphopeptide Y679-K695 (see Figure 3).
- the cysteine protease inhibitory activity was measured in the same manner as in the method for measuring cysteine protease inhibitory activity described in (1).
- FIG. 4 shows the cysteine protease inhibitory effect of human lactoferrin peptide Y679-K695 on papain, cathepsin B, and forceepsin L.
- cis Tin Protea Ichize activity of papain and Katebushin L the concentration of peptides is inhibited on 5 0% or when it reaches 1 0 one 4 M, almost completely at a concentration of 1 0- 3 M Was inhibited.
- Augustin protease activity of Katebushin B the concentration of the peptide was inhibited 6 0% when it reaches 1 0 one 3 M.
- human lactofurin peptide Y679-K695 has cysteine protease inhibitory activity against papain, cathepsin B and cathepsin L.
- a peptide having an amino acid sequence of amino acids 676 to 692 hereinafter referred to as ⁇ lactoferrin peptide Y676) — Write K692 (see Figure 3).
- the same inhibitory activity measurement test was carried out, and it was revealed that human lactoferrin peptide Y679-K695 exhibited almost the same activity.
- cysteine protease inhibitory activity was measured by the same method as the method for measuring the cysteine protease inhibitory activity described in Test Example 3.
- FIG. Figure 5 shows the inhibitory effect of transferrin on papain, cathepsin B and cathepsin L.
- the result is shown.
- cis-Ting protease activity of papain was inhibited 40% when the concentration of trans Hue phosphorus reaches 10- 4 M, was completely inhibited at a concentration of 10 one 3 M.
- cis Tin protease activity of Katebushin B and Katebushin L was inhibited more than 30% when the concentration of the transferrin reaches 10- 4 M. Therefore, it was found that peritransferrin has cysteine protease inhibitory activity against papain, cathepsin B and cathepsin L.
- the peptide of the present invention was synthesized and produced using an automatic amino acid synthesizer (Applied Biosystems, Model 433A).
- NMP N-methylpyrrolidone
- the peptide was purified from the crude peptide by high performance liquid chromatography (hereinafter abbreviated as HPLC).
- HPLC high performance liquid chromatography
- the column is a reversed-phase C 18— ODS O LichrospherlOO, manufactured by Luc, Inc. was used.
- the obtained purified peptide was analyzed by HPLC, and it was further confirmed that a single purified product was obtained.
- the amino acid sequence of the purified peptide was determined using a gas-phase automatic amino acid sequencer (Model 473A, manufactured by Applied Biosystems). As a result, the amino acid sequence of amino acids 679-1695 of SEQ ID NO: 1 was determined. It had an amino acid sequence.
- a tablet cysteine protease inhibitor having the following composition was produced by the following method.
- Lactose manufactured by Wako Pure Chemical Industries 600 g, corn starch (manufactured by Nisshin Seifun Co., Ltd.) 400 g, crystalline cellulose (manufactured by Wako Pure Chemical Industries) 400 g, and Siractofurin (manufactured by Morinaga Milk Industry Co., Ltd.) 600 g was sieved with a 50 mesh sieve (manufactured by Yamato Scientific Co., Ltd.), placed in a 0.5 mm thick polyethylene bag, and mixed by inversion. Using a filling machine (Cesere Pedini, press type), fill the above powder into capsules (Nippon Elanco Corporation, No. 1 gelatin capsule, Op.Yellow No.6 Body, empty weight 75 mg) with a content of 275 mg. Then, 7,000 capsules containing 82 mg of silactoferrin were obtained.
- skim milk powder (Morinaga Milk Industry Co., Ltd.) is dissolved in 800 ml of hot water at 50 ° C, 30 g of sugar (Nissin Sugar Co., Ltd.), 14 g of instant coffee powder (Nestlé Co., Ltd.), 2 g) and 0.01 g of coffee flavor (manufactured by Sanei Chemical Co., Ltd.) are added and dissolved sequentially with stirring, cooled to 10 ° C, and ⁇ -silactoferin (manufactured by Morinaga Milk Industries) is added. Then, a milk drink having a cystine lipase inhibitory effect containing about 0.1% of sylactofurin was prepared.
- Enzyme decomposition product of whey protein (Morinaga Milk Industry Co., Ltd.) 10.8 kg, dextrin (Showa Industry Co., Ltd.) 36 kg, and small amounts of water-soluble vitamins and minerals were dissolved in 200 kg of water, and the aqueous phase was prepared in a tank.
- the present invention relates to a cysteine protease inhibitor containing, as an active ingredient, one or more mixtures selected from the group consisting of lactoferrin, lactoferrin partial peptides, and transferrin.
- lactoferrin lactoferrin partial peptides
- transferrin transferrin
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Priority Applications (7)
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JP2004556839A JP3726095B2 (ja) | 2002-11-29 | 2003-11-25 | プロテアーゼ阻害剤 |
CA002485957A CA2485957A1 (en) | 2002-11-29 | 2003-11-25 | Protease inhibitor |
AU2003284441A AU2003284441A1 (en) | 2002-11-29 | 2003-11-25 | Protease inhibitor |
NZ536338A NZ536338A (en) | 2002-11-29 | 2003-11-25 | Lactoferrin as a cysteine protease inhibitor |
EP03775875A EP1576964A4 (en) | 2002-11-29 | 2003-11-25 | PROTEASE INHIBITOR |
US10/350,023 US20050176123A1 (en) | 2002-11-29 | 2003-11-25 | Protease inhibitor |
NO20044825A NO20044825L (no) | 2002-11-29 | 2004-11-05 | Cystein proteaseinhibitor |
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US (1) | US20050176123A1 (ja) |
EP (1) | EP1576964A4 (ja) |
JP (2) | JP3726095B2 (ja) |
KR (1) | KR100700316B1 (ja) |
CN (1) | CN100379448C (ja) |
AU (1) | AU2003284441A1 (ja) |
CA (1) | CA2485957A1 (ja) |
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JP2010180219A (ja) * | 2010-03-04 | 2010-08-19 | Snow Brand Milk Prod Co Ltd | ラクトフェリン組成物 |
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FR2875501B1 (fr) * | 2004-09-21 | 2008-02-29 | Univ Paris Descartes | Nouveaux derives peptidiques, compositions et utilisations dans un traitement therapeutique de l'infection par un herpesvirus |
US7956031B2 (en) | 2005-05-31 | 2011-06-07 | Naidu Lp | Metallo-lactoferrin-coenzyme compositions for trigger and release of bioenergy |
US20090270309A1 (en) * | 2005-10-14 | 2009-10-29 | Jillian Cornish | Use of lactoferrin fragments and hydrolysates |
US8021659B2 (en) * | 2006-04-28 | 2011-09-20 | Naidu Lp | Coenzyme Q10, lactoferrin and angiogenin compositions and uses thereof |
US20110038917A1 (en) * | 2007-05-08 | 2011-02-17 | Rq Bioscience, Inc. | Therapeutic compositions and methods for treating gram-negative bacterial infections |
JP2013079216A (ja) * | 2011-10-04 | 2013-05-02 | Snow Brand Milk Products Co Ltd | 感覚改善剤 |
US20160089400A1 (en) | 2013-04-08 | 2016-03-31 | N.V. Nutricia | Fermented nutritional composition with thiol protease inhibitor |
WO2020004378A1 (ja) * | 2018-06-26 | 2020-01-02 | 株式会社Nrlファーマ | グリコサミノグリカン阻害剤および促進剤 |
CN111528269B (zh) * | 2020-05-21 | 2022-11-25 | 南通大学 | 一种肉制品蛋白保鲜防腐剂及其制备方法 |
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- 2003-11-25 US US10/350,023 patent/US20050176123A1/en not_active Abandoned
- 2003-11-25 AU AU2003284441A patent/AU2003284441A1/en not_active Abandoned
- 2003-11-25 EP EP03775875A patent/EP1576964A4/en not_active Withdrawn
- 2003-11-25 KR KR1020047018427A patent/KR100700316B1/ko not_active IP Right Cessation
- 2003-11-25 CA CA002485957A patent/CA2485957A1/en not_active Abandoned
- 2003-11-25 JP JP2004556839A patent/JP3726095B2/ja not_active Expired - Fee Related
- 2003-11-25 NZ NZ536338A patent/NZ536338A/en not_active IP Right Cessation
- 2003-11-25 WO PCT/JP2003/015007 patent/WO2004050116A1/ja active Application Filing
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2004
- 2004-11-05 NO NO20044825A patent/NO20044825L/no not_active Application Discontinuation
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KR20050027215A (ko) | 2005-03-18 |
NO20044825L (no) | 2005-01-25 |
US20050176123A1 (en) | 2005-08-11 |
KR100700316B1 (ko) | 2007-03-29 |
NZ536338A (en) | 2006-04-28 |
JP4250599B2 (ja) | 2009-04-08 |
JPWO2004050116A1 (ja) | 2006-03-30 |
JP3726095B2 (ja) | 2005-12-14 |
AU2003284441A1 (en) | 2004-06-23 |
CA2485957A1 (en) | 2004-06-17 |
JP2005213260A (ja) | 2005-08-11 |
CN1691957A (zh) | 2005-11-02 |
EP1576964A1 (en) | 2005-09-21 |
CN100379448C (zh) | 2008-04-09 |
EP1576964A4 (en) | 2008-06-11 |
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