CN108017709B - Bioactive polypeptide KEPMIGVNQELA, and preparation method and application thereof - Google Patents
Bioactive polypeptide KEPMIGVNQELA, and preparation method and application thereof Download PDFInfo
- Publication number
- CN108017709B CN108017709B CN201711320772.3A CN201711320772A CN108017709B CN 108017709 B CN108017709 B CN 108017709B CN 201711320772 A CN201711320772 A CN 201711320772A CN 108017709 B CN108017709 B CN 108017709B
- Authority
- CN
- China
- Prior art keywords
- kepmigvnqela
- antioxidant
- aging
- biologically active
- polypeptide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 108090000765 processed proteins & peptides Proteins 0.000 title claims abstract description 128
- 102000004196 processed proteins & peptides Human genes 0.000 title claims abstract description 114
- 229920001184 polypeptide Polymers 0.000 title claims abstract description 105
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 230000000975 bioactive effect Effects 0.000 title abstract description 53
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 54
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 34
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 31
- 239000003814 drug Substances 0.000 claims abstract description 23
- 235000013305 food Nutrition 0.000 claims abstract description 20
- 229940079593 drug Drugs 0.000 claims abstract description 16
- 125000003275 alpha amino acid group Chemical group 0.000 claims abstract 2
- 230000036541 health Effects 0.000 claims description 16
- 239000012634 fragment Substances 0.000 claims description 7
- 239000002537 cosmetic Substances 0.000 claims description 5
- 239000002773 nucleotide Substances 0.000 claims description 5
- 125000003729 nucleotide group Chemical group 0.000 claims description 5
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- FWMNVWWHGCHHJJ-SKKKGAJSSA-N 4-amino-1-[(2r)-6-amino-2-[[(2r)-2-[[(2r)-2-[[(2r)-2-amino-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]hexanoyl]piperidine-4-carboxylic acid Chemical compound C([C@H](C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCCCN)C(=O)N1CCC(N)(CC1)C(O)=O)NC(=O)[C@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 FWMNVWWHGCHHJJ-SKKKGAJSSA-N 0.000 claims description 2
- 238000010353 genetic engineering Methods 0.000 claims description 2
- 239000000825 pharmaceutical preparation Substances 0.000 claims 2
- 229940127557 pharmaceutical product Drugs 0.000 claims 2
- 238000002474 experimental method Methods 0.000 abstract description 23
- 230000006870 function Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 13
- 230000032683 aging Effects 0.000 abstract description 9
- 238000001727 in vivo Methods 0.000 abstract description 7
- 102000004169 proteins and genes Human genes 0.000 abstract description 5
- 108090000623 proteins and genes Proteins 0.000 abstract description 5
- 230000004071 biological effect Effects 0.000 abstract description 4
- 238000000338 in vitro Methods 0.000 abstract description 4
- 230000000638 stimulation Effects 0.000 abstract description 2
- 241000244206 Nematoda Species 0.000 description 49
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 39
- 235000006708 antioxidants Nutrition 0.000 description 34
- 239000000243 solution Substances 0.000 description 23
- 239000011347 resin Substances 0.000 description 21
- 229920005989 resin Polymers 0.000 description 21
- HHEAADYXPMHMCT-UHFFFAOYSA-N dpph Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1[N]N(C=1C=CC=CC=1)C1=CC=CC=C1 HHEAADYXPMHMCT-UHFFFAOYSA-N 0.000 description 18
- 239000003153 chemical reaction reagent Substances 0.000 description 17
- 239000000047 product Substances 0.000 description 17
- 150000001413 amino acids Chemical class 0.000 description 16
- GLEVLJDDWXEYCO-UHFFFAOYSA-N Trolox Chemical compound O1C(C)(C(O)=O)CCC2=C1C(C)=C(C)C(O)=C2C GLEVLJDDWXEYCO-UHFFFAOYSA-N 0.000 description 14
- OHDRQQURAXLVGJ-HLVWOLMTSA-N azane;(2e)-3-ethyl-2-[(e)-(3-ethyl-6-sulfo-1,3-benzothiazol-2-ylidene)hydrazinylidene]-1,3-benzothiazole-6-sulfonic acid Chemical compound [NH4+].[NH4+].S/1C2=CC(S([O-])(=O)=O)=CC=C2N(CC)C\1=N/N=C1/SC2=CC(S([O-])(=O)=O)=CC=C2N1CC OHDRQQURAXLVGJ-HLVWOLMTSA-N 0.000 description 14
- 238000007254 oxidation reaction Methods 0.000 description 14
- 150000003254 radicals Chemical class 0.000 description 14
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 13
- 102000019197 Superoxide Dismutase Human genes 0.000 description 13
- 108010012715 Superoxide dismutase Proteins 0.000 description 13
- 235000013601 eggs Nutrition 0.000 description 13
- 235000013336 milk Nutrition 0.000 description 13
- 239000008267 milk Substances 0.000 description 13
- 210000004080 milk Anatomy 0.000 description 13
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 12
- 241000238631 Hexapoda Species 0.000 description 11
- 239000007853 buffer solution Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 11
- 230000003647 oxidation Effects 0.000 description 11
- 239000006228 supernatant Substances 0.000 description 11
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- WSMYVTOQOOLQHP-UHFFFAOYSA-N Malondialdehyde Chemical compound O=CCC=O WSMYVTOQOOLQHP-UHFFFAOYSA-N 0.000 description 9
- 238000002835 absorbance Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 229940118019 malondialdehyde Drugs 0.000 description 9
- 230000036542 oxidative stress Effects 0.000 description 9
- 239000003642 reactive oxygen metabolite Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 230000004083 survival effect Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 6
- 102000009366 Alpha-s1 casein Human genes 0.000 description 6
- 108050000244 Alpha-s1 casein Proteins 0.000 description 6
- 230000001580 bacterial effect Effects 0.000 description 6
- 238000004061 bleaching Methods 0.000 description 6
- GVJHHUAWPYXKBD-UHFFFAOYSA-N d-alpha-tocopherol Natural products OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 description 6
- 230000008642 heat stress Effects 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920001817 Agar Polymers 0.000 description 5
- 241000244203 Caenorhabditis elegans Species 0.000 description 5
- 239000008272 agar Substances 0.000 description 5
- -1 aromatic amino acids Chemical class 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 230000034994 death Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000011534 incubation Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- ASOKPJOREAFHNY-UHFFFAOYSA-N 1-Hydroxybenzotriazole Chemical compound C1=CC=C2N(O)N=NC2=C1 ASOKPJOREAFHNY-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 102000004190 Enzymes Human genes 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 4
- 238000003149 assay kit Methods 0.000 description 4
- 238000010511 deprotection reaction Methods 0.000 description 4
- NPZTUJOABDZTLV-UHFFFAOYSA-N hydroxybenzotriazole Substances O=C1C=CC=C2NNN=C12 NPZTUJOABDZTLV-UHFFFAOYSA-N 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- FEMOMIGRRWSMCU-UHFFFAOYSA-N ninhydrin Chemical compound C1=CC=C2C(=O)C(O)(O)C(=O)C2=C1 FEMOMIGRRWSMCU-UHFFFAOYSA-N 0.000 description 4
- 235000018102 proteins Nutrition 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 235000010384 tocopherol Nutrition 0.000 description 4
- 229930003799 tocopherol Natural products 0.000 description 4
- 229960001295 tocopherol Drugs 0.000 description 4
- 239000011732 tocopherol Substances 0.000 description 4
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 description 4
- BDNKZNFMNDZQMI-UHFFFAOYSA-N 1,3-diisopropylcarbodiimide Chemical compound CC(C)N=C=NC(C)C BDNKZNFMNDZQMI-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 108010076119 Caseins Proteins 0.000 description 3
- 102000011632 Caseins Human genes 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- 239000012880 LB liquid culture medium Substances 0.000 description 3
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000021736 acetylation Effects 0.000 description 3
- 238000006640 acetylation reaction Methods 0.000 description 3
- 230000003698 anagen phase Effects 0.000 description 3
- 230000006315 carbonylation Effects 0.000 description 3
- 238000005810 carbonylation reaction Methods 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 230000021523 carboxylation Effects 0.000 description 3
- 238000006473 carboxylation reaction Methods 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 238000004113 cell culture Methods 0.000 description 3
- 238000003776 cleavage reaction Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000012258 culturing Methods 0.000 description 3
- 230000032050 esterification Effects 0.000 description 3
- 238000005886 esterification reaction Methods 0.000 description 3
- 230000013595 glycosylation Effects 0.000 description 3
- 238000006206 glycosylation reaction Methods 0.000 description 3
- 210000004349 growth plate Anatomy 0.000 description 3
- 230000010196 hermaphroditism Effects 0.000 description 3
- 230000033444 hydroxylation Effects 0.000 description 3
- 238000005805 hydroxylation reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004949 mass spectrometry Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 230000011987 methylation Effects 0.000 description 3
- 238000007069 methylation reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000017448 oviposition Effects 0.000 description 3
- 230000004792 oxidative damage Effects 0.000 description 3
- 230000026731 phosphorylation Effects 0.000 description 3
- 238000006366 phosphorylation reaction Methods 0.000 description 3
- 239000013641 positive control Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 230000001850 reproductive effect Effects 0.000 description 3
- 230000007017 scission Effects 0.000 description 3
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 description 3
- 229910001488 sodium perchlorate Inorganic materials 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000004704 ultra performance liquid chromatography Methods 0.000 description 3
- 239000012224 working solution Substances 0.000 description 3
- 125000003088 (fluoren-9-ylmethoxy)carbonyl group Chemical group 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- 108010077544 Chromatin Proteins 0.000 description 2
- 108020004414 DNA Proteins 0.000 description 2
- 241000255581 Drosophila <fruit fly, genus> Species 0.000 description 2
- HVYWQYLBVXMXSV-GUBZILKMSA-N Glu-Leu-Ala Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C)C(O)=O HVYWQYLBVXMXSV-GUBZILKMSA-N 0.000 description 2
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 2
- 108090001005 Interleukin-6 Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PAMDBWYMLWOELY-SDDRHHMPSA-N Lys-Glu-Pro Chemical compound C1C[C@@H](N(C1)C(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCCCN)N)C(=O)O PAMDBWYMLWOELY-SDDRHHMPSA-N 0.000 description 2
- GETCJHFFECHWHI-QXEWZRGKSA-N Met-Ile-Gly Chemical compound CC[C@H](C)[C@@H](C(=O)NCC(=O)O)NC(=O)[C@H](CCSC)N GETCJHFFECHWHI-QXEWZRGKSA-N 0.000 description 2
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 2
- 230000002292 Radical scavenging effect Effects 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- GXAZTLJYINLMJL-LAEOZQHASA-N Val-Asn-Gln Chemical compound CC(C)[C@@H](C(=O)N[C@@H](CC(=O)N)C(=O)N[C@@H](CCC(=O)N)C(=O)O)N GXAZTLJYINLMJL-LAEOZQHASA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 125000000539 amino acid group Chemical group 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000006907 apoptotic process Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 2
- 239000005018 casein Substances 0.000 description 2
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 2
- 235000021240 caseins Nutrition 0.000 description 2
- 210000003483 chromatin Anatomy 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 235000020247 cow milk Nutrition 0.000 description 2
- 230000003226 decolorizating effect Effects 0.000 description 2
- BGRWYRAHAFMIBJ-UHFFFAOYSA-N diisopropylcarbodiimide Natural products CC(C)NC(=O)NC(C)C BGRWYRAHAFMIBJ-UHFFFAOYSA-N 0.000 description 2
- 238000001437 electrospray ionisation time-of-flight quadrupole detection Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 108010037850 glycylvaline Proteins 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 108010056582 methionylglutamic acid Proteins 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035790 physiological processes and functions Effects 0.000 description 2
- 239000000467 phytic acid Substances 0.000 description 2
- 229940068041 phytic acid Drugs 0.000 description 2
- 235000002949 phytic acid Nutrition 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 125000006239 protecting group Chemical group 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000000152 swallowing effect Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- VFERDGRYIBXYRG-REVLRCOSSA-N (2s)-1-[(2s)-2-[[(2s)-2-[[(2s)-2-[[(2s)-2-amino-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-3-methylbutanoyl]amino]propanoyl]pyrrolidine-2-carboxylic acid Chemical compound C([C@@H](C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](C)C(=O)N1[C@@H](CCC1)C(O)=O)NC(=O)[C@@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 VFERDGRYIBXYRG-REVLRCOSSA-N 0.000 description 1
- KWLNZVXBGCEDOO-QKUYTOGTSA-N (2s)-2-[[(2s)-2-[[2-[[(2s)-2-[[(2s)-2-[[(2s)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoyl]amino]acetyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoic acid Chemical compound C([C@@H](C(=O)N[C@@H](CC(C)C)C(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)[C@@H](N)CCCN=C(N)N)C1=CC=C(O)C=C1 KWLNZVXBGCEDOO-QKUYTOGTSA-N 0.000 description 1
- VYMPLPIFKRHAAC-UHFFFAOYSA-N 1,2-ethanedithiol Chemical compound SCCS VYMPLPIFKRHAAC-UHFFFAOYSA-N 0.000 description 1
- GOZMBJCYMQQACI-UHFFFAOYSA-N 6,7-dimethyl-3-[[methyl-[2-[methyl-[[1-[3-(trifluoromethyl)phenyl]indol-3-yl]methyl]amino]ethyl]amino]methyl]chromen-4-one;dihydrochloride Chemical compound Cl.Cl.C=1OC2=CC(C)=C(C)C=C2C(=O)C=1CN(C)CCN(C)CC(C1=CC=CC=C11)=CN1C1=CC=CC(C(F)(F)F)=C1 GOZMBJCYMQQACI-UHFFFAOYSA-N 0.000 description 1
- 238000010269 ABTS assay Methods 0.000 description 1
- RXTBLQVXNIECFP-FXQIFTODSA-N Ala-Gln-Gln Chemical compound C[C@H](N)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(N)=O)C(O)=O RXTBLQVXNIECFP-FXQIFTODSA-N 0.000 description 1
- WKOBSJOZRJJVRZ-FXQIFTODSA-N Ala-Glu-Glu Chemical compound [H]N[C@@H](C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCC(O)=O)C(O)=O WKOBSJOZRJJVRZ-FXQIFTODSA-N 0.000 description 1
- 108050001786 Alpha-s2 casein Proteins 0.000 description 1
- 241000024188 Andala Species 0.000 description 1
- 101800000068 Antioxidant peptide Proteins 0.000 description 1
- LLZXKVAAEWBUPB-KKUMJFAQSA-N Arg-Gln-Phe Chemical compound [H]N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC1=CC=CC=C1)C(O)=O LLZXKVAAEWBUPB-KKUMJFAQSA-N 0.000 description 1
- WMEVEPXNCMKNGH-IHRRRGAJSA-N Arg-Leu-His Chemical compound CC(C)C[C@@H](C(=O)N[C@@H](CC1=CN=CN1)C(=O)O)NC(=O)[C@H](CCCN=C(N)N)N WMEVEPXNCMKNGH-IHRRRGAJSA-N 0.000 description 1
- UZGFHWIJWPUPOH-IHRRRGAJSA-N Arg-Leu-Lys Chemical compound CC(C)C[C@@H](C(=O)N[C@@H](CCCCN)C(=O)O)NC(=O)[C@H](CCCN=C(N)N)N UZGFHWIJWPUPOH-IHRRRGAJSA-N 0.000 description 1
- FVBZXNSRIDVYJS-AVGNSLFASA-N Arg-Pro-Lys Chemical compound NCCCC[C@@H](C(O)=O)NC(=O)[C@@H]1CCCN1C(=O)[C@@H](N)CCCN=C(N)N FVBZXNSRIDVYJS-AVGNSLFASA-N 0.000 description 1
- 206010003210 Arteriosclerosis Diseases 0.000 description 1
- XVAPVJNJGLWGCS-ACZMJKKPSA-N Asn-Glu-Asn Chemical compound C(CC(=O)O)[C@@H](C(=O)N[C@@H](CC(=O)N)C(=O)O)NC(=O)[C@H](CC(=O)N)N XVAPVJNJGLWGCS-ACZMJKKPSA-N 0.000 description 1
- NCXTYSVDWLAQGZ-ZKWXMUAHSA-N Asn-Ser-Val Chemical compound CC(C)[C@@H](C(O)=O)NC(=O)[C@H](CO)NC(=O)[C@@H](N)CC(N)=O NCXTYSVDWLAQGZ-ZKWXMUAHSA-N 0.000 description 1
- BLQBMRNMBAYREH-UWJYBYFXSA-N Asp-Ala-Tyr Chemical compound N[C@@H](CC(O)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CC1=CC=C(C=C1)O)C(=O)O BLQBMRNMBAYREH-UWJYBYFXSA-N 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 102000016938 Catalase Human genes 0.000 description 1
- 108010053835 Catalase Proteins 0.000 description 1
- 108090000695 Cytokines Proteins 0.000 description 1
- 102000004127 Cytokines Human genes 0.000 description 1
- 238000002965 ELISA Methods 0.000 description 1
- IGNGBUVODQLMRJ-CIUDSAMLSA-N Gln-Ala-Met Chemical compound [H]N[C@@H](CCC(N)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CCSC)C(O)=O IGNGBUVODQLMRJ-CIUDSAMLSA-N 0.000 description 1
- XJKAKYXMFHUIHT-AUTRQRHGSA-N Gln-Glu-Val Chemical compound CC(C)[C@@H](C(=O)O)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCC(=O)N)N XJKAKYXMFHUIHT-AUTRQRHGSA-N 0.000 description 1
- GNMQDOGFWYWPNM-LAEOZQHASA-N Gln-Gly-Ile Chemical compound CC[C@H](C)[C@H](NC(=O)CNC(=O)[C@@H](N)CCC(N)=O)C(O)=O GNMQDOGFWYWPNM-LAEOZQHASA-N 0.000 description 1
- XFAUJGNLHIGXET-AVGNSLFASA-N Gln-Leu-Leu Chemical compound [H]N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(O)=O XFAUJGNLHIGXET-AVGNSLFASA-N 0.000 description 1
- LKDIBBOKUAASNP-FXQIFTODSA-N Glu-Ala-Glu Chemical compound OC(=O)CC[C@H](N)C(=O)N[C@@H](C)C(=O)N[C@@H](CCC(O)=O)C(O)=O LKDIBBOKUAASNP-FXQIFTODSA-N 0.000 description 1
- RDDSZZJOKDVPAE-ACZMJKKPSA-N Glu-Asn-Ser Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(O)=O RDDSZZJOKDVPAE-ACZMJKKPSA-N 0.000 description 1
- IESFZVCAVACGPH-PEFMBERDSA-N Glu-Asp-Ile Chemical compound CC[C@H](C)[C@@H](C(O)=O)NC(=O)[C@H](CC(O)=O)NC(=O)[C@@H](N)CCC(O)=O IESFZVCAVACGPH-PEFMBERDSA-N 0.000 description 1
- WATXSTJXNBOHKD-LAEOZQHASA-N Glu-Asp-Val Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](C(C)C)C(O)=O WATXSTJXNBOHKD-LAEOZQHASA-N 0.000 description 1
- LVCHEMOPBORRLB-DCAQKATOSA-N Glu-Gln-Lys Chemical compound NCCCC[C@H](NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](N)CCC(O)=O)C(O)=O LVCHEMOPBORRLB-DCAQKATOSA-N 0.000 description 1
- WNRZUESNGGDCJX-JYJNAYRXSA-N Glu-Leu-Phe Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC1=CC=CC=C1)C(O)=O WNRZUESNGGDCJX-JYJNAYRXSA-N 0.000 description 1
- FBEJIDRSQCGFJI-GUBZILKMSA-N Glu-Leu-Ser Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CO)C(O)=O FBEJIDRSQCGFJI-GUBZILKMSA-N 0.000 description 1
- UUYBFNKHOCJCHT-VHSXEESVSA-N Gly-Leu-Pro Chemical compound CC(C)C[C@@H](C(=O)N1CCC[C@@H]1C(=O)O)NC(=O)CN UUYBFNKHOCJCHT-VHSXEESVSA-N 0.000 description 1
- GMTXWRIDLGTVFC-IUCAKERBSA-N Gly-Lys-Glu Chemical compound [H]NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(O)=O GMTXWRIDLGTVFC-IUCAKERBSA-N 0.000 description 1
- FGPLUIQCSKGLTI-WDSKDSINSA-N Gly-Ser-Glu Chemical compound NCC(=O)N[C@@H](CO)C(=O)N[C@H](C(O)=O)CCC(O)=O FGPLUIQCSKGLTI-WDSKDSINSA-N 0.000 description 1
- CQMFNTVQVLQRLT-JHEQGTHGSA-N Gly-Thr-Gln Chemical compound [H]NCC(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(N)=O)C(O)=O CQMFNTVQVLQRLT-JHEQGTHGSA-N 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- WCHONUZTYDQMBY-PYJNHQTQSA-N His-Pro-Ile Chemical compound [H]N[C@@H](CC1=CNC=N1)C(=O)N1CCC[C@H]1C(=O)N[C@@H]([C@@H](C)CC)C(O)=O WCHONUZTYDQMBY-PYJNHQTQSA-N 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- LKACSKJPTFSBHR-MNXVOIDGSA-N Ile-Gln-Lys Chemical compound CC[C@H](C)[C@@H](C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CCCCN)C(=O)O)N LKACSKJPTFSBHR-MNXVOIDGSA-N 0.000 description 1
- LBRCLQMZAHRTLV-ZKWXMUAHSA-N Ile-Gly-Ser Chemical compound CC[C@H](C)[C@H](N)C(=O)NCC(=O)N[C@@H](CO)C(O)=O LBRCLQMZAHRTLV-ZKWXMUAHSA-N 0.000 description 1
- PXKACEXYLPBMAD-JBDRJPRFSA-N Ile-Ser-Ser Chemical compound CC[C@H](C)[C@@H](C(=O)N[C@@H](CO)C(=O)N[C@@H](CO)C(=O)O)N PXKACEXYLPBMAD-JBDRJPRFSA-N 0.000 description 1
- RQZFWBLDTBDEOF-RNJOBUHISA-N Ile-Val-Pro Chemical compound CC[C@H](C)[C@@H](C(=O)N[C@@H](C(C)C)C(=O)N1CCC[C@@H]1C(=O)O)N RQZFWBLDTBDEOF-RNJOBUHISA-N 0.000 description 1
- 108090000978 Interleukin-4 Proteins 0.000 description 1
- SENJXOPIZNYLHU-UHFFFAOYSA-N L-leucyl-L-arginine Natural products CC(C)CC(N)C(=O)NC(C(O)=O)CCCN=C(N)N SENJXOPIZNYLHU-UHFFFAOYSA-N 0.000 description 1
- HPBCTWSUJOGJSH-MNXVOIDGSA-N Leu-Glu-Ile Chemical compound [H]N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H]([C@@H](C)CC)C(O)=O HPBCTWSUJOGJSH-MNXVOIDGSA-N 0.000 description 1
- DSFYPIUSAMSERP-IHRRRGAJSA-N Leu-Leu-Arg Chemical compound CC(C)C[C@H](N)C(=O)N[C@@H](CC(C)C)C(=O)N[C@H](C(O)=O)CCCN=C(N)N DSFYPIUSAMSERP-IHRRRGAJSA-N 0.000 description 1
- WGCKDDHUFPQSMZ-ZPFDUUQYSA-N Lys-Asp-Ile Chemical compound CC[C@H](C)[C@@H](C(O)=O)NC(=O)[C@H](CC(O)=O)NC(=O)[C@@H](N)CCCCN WGCKDDHUFPQSMZ-ZPFDUUQYSA-N 0.000 description 1
- VQXAVLQBQJMENB-SRVKXCTJSA-N Lys-Glu-Met Chemical compound [H]N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCSC)C(O)=O VQXAVLQBQJMENB-SRVKXCTJSA-N 0.000 description 1
- GTAXSKOXPIISBW-AVGNSLFASA-N Lys-His-Gln Chemical compound C1=C(NC=N1)C[C@@H](C(=O)N[C@@H](CCC(=O)N)C(=O)O)NC(=O)[C@H](CCCCN)N GTAXSKOXPIISBW-AVGNSLFASA-N 0.000 description 1
- CAVRAQIDHUPECU-UVOCVTCTSA-N Lys-Thr-Thr Chemical compound [H]N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H]([C@@H](C)O)C(O)=O CAVRAQIDHUPECU-UVOCVTCTSA-N 0.000 description 1
- WINFHLHJTRGLCV-BZSNNMDCSA-N Lys-Tyr-Lys Chemical compound NCCCC[C@H](N)C(=O)N[C@H](C(=O)N[C@@H](CCCCN)C(O)=O)CC1=CC=C(O)C=C1 WINFHLHJTRGLCV-BZSNNMDCSA-N 0.000 description 1
- MDDUIRLQCYVRDO-NHCYSSNCSA-N Lys-Val-Asn Chemical compound NC(=O)C[C@@H](C(O)=O)NC(=O)[C@H](C(C)C)NC(=O)[C@@H](N)CCCCN MDDUIRLQCYVRDO-NHCYSSNCSA-N 0.000 description 1
- YLDSJJOGQNEQJK-AVGNSLFASA-N Met-Pro-Leu Chemical compound CSCC[C@H](N)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(C)C)C(O)=O YLDSJJOGQNEQJK-AVGNSLFASA-N 0.000 description 1
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 1
- BQVUABVGYYSDCJ-UHFFFAOYSA-N Nalpha-L-Leucyl-L-tryptophan Natural products C1=CC=C2C(CC(NC(=O)C(N)CC(C)C)C(O)=O)=CNC2=C1 BQVUABVGYYSDCJ-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- CZQZSMJXFGGBHM-KKUMJFAQSA-N Phe-Pro-Gln Chemical compound C1C[C@H](N(C1)C(=O)[C@H](CC2=CC=CC=C2)N)C(=O)N[C@@H](CCC(=O)N)C(=O)O CZQZSMJXFGGBHM-KKUMJFAQSA-N 0.000 description 1
- SJRQWEDYTKYHHL-SLFFLAALSA-N Phe-Tyr-Pro Chemical compound C1C[C@@H](N(C1)C(=O)[C@H](CC2=CC=C(C=C2)O)NC(=O)[C@H](CC3=CC=CC=C3)N)C(=O)O SJRQWEDYTKYHHL-SLFFLAALSA-N 0.000 description 1
- TXPUNZXZDVJUJQ-LPEHRKFASA-N Pro-Asn-Pro Chemical compound C1C[C@H](NC1)C(=O)N[C@@H](CC(=O)N)C(=O)N2CCC[C@@H]2C(=O)O TXPUNZXZDVJUJQ-LPEHRKFASA-N 0.000 description 1
- FUVBEZJCRMHWEM-FXQIFTODSA-N Pro-Asn-Ser Chemical compound [H]N1CCC[C@H]1C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(O)=O FUVBEZJCRMHWEM-FXQIFTODSA-N 0.000 description 1
- FNGOXVQBBCMFKV-CIUDSAMLSA-N Pro-Ser-Glu Chemical compound [H]N1CCC[C@H]1C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(O)=O)C(O)=O FNGOXVQBBCMFKV-CIUDSAMLSA-N 0.000 description 1
- QKDIHFHGHBYTKB-IHRRRGAJSA-N Pro-Ser-Phe Chemical compound N([C@@H](CO)C(=O)N[C@@H](CC=1C=CC=CC=1)C(O)=O)C(=O)[C@@H]1CCCN1 QKDIHFHGHBYTKB-IHRRRGAJSA-N 0.000 description 1
- 108020004511 Recombinant DNA Proteins 0.000 description 1
- QPFJSHSJFIYDJZ-GHCJXIJMSA-N Ser-Asp-Ile Chemical compound CC[C@H](C)[C@@H](C(O)=O)NC(=O)[C@H](CC(O)=O)NC(=O)[C@@H](N)CO QPFJSHSJFIYDJZ-GHCJXIJMSA-N 0.000 description 1
- UOLGINIHBRIECN-FXQIFTODSA-N Ser-Glu-Glu Chemical compound [H]N[C@@H](CO)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCC(O)=O)C(O)=O UOLGINIHBRIECN-FXQIFTODSA-N 0.000 description 1
- UQFYNFTYDHUIMI-WHFBIAKZSA-N Ser-Gly-Ala Chemical compound OC(=O)[C@H](C)NC(=O)CNC(=O)[C@@H](N)CO UQFYNFTYDHUIMI-WHFBIAKZSA-N 0.000 description 1
- IFLVBVIYADZIQO-DCAQKATOSA-N Ser-Met-Lys Chemical compound CSCC[C@@H](C(=O)N[C@@H](CCCCN)C(=O)O)NC(=O)[C@H](CO)N IFLVBVIYADZIQO-DCAQKATOSA-N 0.000 description 1
- LGNBRHZANHMZHK-NUMRIWBASA-N Thr-Glu-Asp Chemical compound C[C@H]([C@@H](C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CC(=O)O)C(=O)O)N)O LGNBRHZANHMZHK-NUMRIWBASA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GDPDVIBHJDFRFD-RNXOBYDBSA-N Trp-Tyr-Tyr Chemical compound [H]N[C@@H](CC1=CNC2=C1C=CC=C2)C(=O)N[C@@H](CC1=CC=C(O)C=C1)C(=O)N[C@@H](CC1=CC=C(O)C=C1)C(O)=O GDPDVIBHJDFRFD-RNXOBYDBSA-N 0.000 description 1
- 108060008682 Tumor Necrosis Factor Proteins 0.000 description 1
- 102100040247 Tumor necrosis factor Human genes 0.000 description 1
- TWAVEIJGFCBWCG-JYJNAYRXSA-N Tyr-Gln-Leu Chemical compound CC(C)C[C@@H](C(=O)O)NC(=O)[C@H](CCC(=O)N)NC(=O)[C@H](CC1=CC=C(C=C1)O)N TWAVEIJGFCBWCG-JYJNAYRXSA-N 0.000 description 1
- UUBKSZNKJUJQEJ-JRQIVUDYSA-N Tyr-Thr-Asp Chemical compound C[C@H]([C@@H](C(=O)N[C@@H](CC(=O)O)C(=O)O)NC(=O)[C@H](CC1=CC=C(C=C1)O)N)O UUBKSZNKJUJQEJ-JRQIVUDYSA-N 0.000 description 1
- GQMNEJMFMCJJTD-NHCYSSNCSA-N Val-Pro-Gln Chemical compound CC(C)[C@H](N)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CCC(N)=O)C(O)=O GQMNEJMFMCJJTD-NHCYSSNCSA-N 0.000 description 1
- NHXZRXLFOBFMDM-AVGNSLFASA-N Val-Pro-Leu Chemical compound CC(C)C[C@@H](C(O)=O)NC(=O)[C@@H]1CCCN1C(=O)[C@@H](N)C(C)C NHXZRXLFOBFMDM-AVGNSLFASA-N 0.000 description 1
- 229930003427 Vitamin E Natural products 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000037328 acute stress Effects 0.000 description 1
- 108010060802 alpha-casein (90-95) Proteins 0.000 description 1
- 238000002792 antioxidant assay Methods 0.000 description 1
- 208000011775 arteriosclerosis disease Diseases 0.000 description 1
- 235000019463 artificial additive Nutrition 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 235000019282 butylated hydroxyanisole Nutrition 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000003022 colostrum Anatomy 0.000 description 1
- 235000021277 colostrum Nutrition 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000004807 desolvation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000021245 dietary protein Nutrition 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- FSXRLASFHBWESK-UHFFFAOYSA-N dipeptide phenylalanyl-tyrosine Natural products C=1C=C(O)C=CC=1CC(C(O)=O)NC(=O)C(N)CC1=CC=CC=C1 FSXRLASFHBWESK-UHFFFAOYSA-N 0.000 description 1
- 108010054813 diprotin B Proteins 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000007760 free radical scavenging Effects 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 108010078144 glutaminyl-glycine Proteins 0.000 description 1
- 108010018006 histidylserine Proteins 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229940088592 immunologic factor Drugs 0.000 description 1
- 239000000367 immunologic factor Substances 0.000 description 1
- 235000019239 indanthrene blue RS Nutrition 0.000 description 1
- UHOKSCJSTAHBSO-UHFFFAOYSA-N indanthrone blue Chemical compound C1=CC=C2C(=O)C3=CC=C4NC5=C6C(=O)C7=CC=CC=C7C(=O)C6=CC=C5NC4=C3C(=O)C2=C1 UHOKSCJSTAHBSO-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 210000002490 intestinal epithelial cell Anatomy 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 108010000761 leucylarginine Proteins 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 108010044348 lysyl-glutamyl-aspartic acid Proteins 0.000 description 1
- 108010045397 lysyl-tyrosyl-lysine Proteins 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000011785 micronutrient Substances 0.000 description 1
- 235000013369 micronutrients Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010369 molecular cloning Methods 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000004783 oxidative metabolism Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 108010018625 phenylalanylarginine Proteins 0.000 description 1
- 108010051242 phenylalanylserine Proteins 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000000770 proinflammatory effect Effects 0.000 description 1
- YYVGYULIMDRZMJ-UHFFFAOYSA-N propan-2-ylsilane Chemical compound CC(C)[SiH3] YYVGYULIMDRZMJ-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013215 result calculation Methods 0.000 description 1
- 206010039073 rheumatoid arthritis Diseases 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 108010069117 seryl-lysyl-aspartic acid Proteins 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 108010020532 tyrosyl-proline Proteins 0.000 description 1
- 238000000825 ultraviolet detection Methods 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 235000013618 yogurt Nutrition 0.000 description 1
- 235000021247 β-casein Nutrition 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4732—Casein
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/17—Amino acids, peptides or proteins
- A23L33/18—Peptides; Protein hydrolysates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/64—Proteins; Peptides; Derivatives or degradation products thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/08—Anti-ageing preparations
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Abstract
The invention relates to the field of proteins, in particular to a bioactive polypeptide KEPMIGVNQELA, a preparation method and application thereof, wherein the amino acid sequence of the bioactive polypeptide KEPMIGVNQELA is Lys-Glu-Pro-Met-Ile-Gly-Val-Asn-Gln-Glu-Leu-Ala. In vitro antioxidant experiments and in vivo anti-aging experiments prove that the polypeptide KEPMIGVNQELA has good antioxidant biological activity and anti-aging activity, and on one hand, the bioactive polypeptide KEPMIGVNQELA has good antioxidant activity, can remove free radicals in organisms and improve the quality of life; on the other hand, the activity of an anti-peroxidase system in vivo can be improved, and the function of resisting exogenous stimulation of the organism is enhanced, so that the probability of aging, aging and illness of the organism is reduced, and the method has very important significance for developing foods, health-care products and medicines with antioxidant and anti-aging functions.
Description
Technical Field
The invention relates to the field of proteins, in particular to a bioactive polypeptide KEPMIGVNQELA, and a preparation method and application thereof.
Background
In the process of fermenting the cow milk by the lactic acid bacteria, a part of protein in the cow milk is metabolized and utilized by the lactic acid bacteria, and a series of physiological and biochemical reactions occur, so that the protein is changed into polypeptide or free amino acid which is digested and absorbed by a human body or directly enters the blood circulation of the human body through the absorption and transportation of small intestinal epithelial cells. Among these polypeptides, some have a specific physiological function and are called "bioactive peptides".
It is particularly important to find safe bioactive peptides in natural food sources. In recent years, some food-derived polypeptides, such as short peptides of corn, soybean peptides, milk polypeptides, etc., have been found to have good biological activity. The polypeptides can be obtained through various ways such as microbial fermentation, digestion and enzymolysis and the like, and most of the polypeptides with biological activity consist of 2-20 amino acid residues, have the molecular weight of less than 6000Da and contain a certain amount of hydrophobic amino acids and aromatic amino acids.
Oxidation reactions and oxidative metabolism are vital to food and the human body, and free radicals and active oxygen cause a series of oxidation reactions. When excessive free radicals are formed, they exceed the protective effects of protective enzymes such as superoxide dismutase, catalase, resulting in a series of side effects such as lipid oxidation, apoptosis, etc. The oxidation reaction not only affects the shelf life of the fat-containing food, but also causes certain harm to the health of human bodies, such as rheumatoid arthritis, diabetes, arteriosclerosis and the like. In addition, Collins et al, 2005 discovered that cancer development was also associated with oxidative damage to DNA.
Early synthetic antioxidants such as Butylated Hydroxyanisole (BHA), 2, 6-di-tert-butyl-4-methylphenol (BHT) were used in food as lipid antioxidants, but these synthetic additives all have potential risks to humans. In the course of research on natural antioxidants, antioxidant peptides derived from food proteins have become one of the most popular studies. The antioxidant is high in safety, is easier to absorb and utilize than macromolecular nutrient substances such as protein and the like, can promote the absorption of micronutrients such as calcium, iron and the like, has better antioxidant activity and has wide application prospect.
Aging is a natural phenomenon, and the process is often accompanied by the changes of antioxidant level, organ tissues and immune factors, wherein the cytokines are changed in a complex way, such as proinflammatory cytokines IL-6, IL-4, TNF- α and the like show a growing trend, and IL-6 and TNF-a are considered to play important roles in the process of the senile diseases.
The anti-aging peptide has the advantages that the anti-aging peptide is a novel anti-aging agent, has incomparable advantages with amino acid in the aspect of physiological function, can promote or inhibit enzymes in organisms, improve the absorption and utilization of minerals and other nutrient elements, clear away free radicals in the bodies, enhance the self anti-oxidation capability of the organisms and delay aging. Therefore, the nutrition and health care effects of bioactive peptides have become the focus of research on the subjects of scholars at home and abroad. Experiments and researches by meaningful people find that the milk-derived bioactive small peptide can effectively prolong the life of the drosophila and delay the aging of the drosophila, and has better antioxidation effect, and presumably is rich in thiopeptides. The results of Zhou Zhi Hui et al show that the bovine colostrum extract can obviously improve the SOD activity in serum of the elderly, reduce lipid peroxides of the SOD, enhance the oxidation resistance of organisms and have certain anti-aging function.
At present, there are many researches on bioactive polypeptides, for example, chinese patent CN105254738A discloses a milk-derived bioactive polypeptide DELQDKIH derived from β -casein, chinese patent CN105254739A discloses a milk-derived bioactive polypeptide GTQYTD derived from α s 1-casein, and chinese patent CN105254740A discloses a milk-derived bioactive polypeptide NQFYQKF derived from α s 2-casein.
Disclosure of Invention
The invention aims to provide a bioactive polypeptide KEPMIGVNQELA, and a preparation method and application thereof.
The purpose of the invention can be realized by the following technical scheme:
in a first aspect of the invention, there is provided a biologically active polypeptide KEPMIGVNQELA having the amino acid sequence Lys-Glu-Pro-Met-Ile-Gly-Val-Asn-Gln-Glu-Leu-Ala as set forth in SEQ ID NO: 1 is shown.
Preferably, the bioactive polypeptide is milk-derived, specifically derived from α s 1-casein, and is αS1Amino acid residues 132-143 of the casein variant B α s 1-the amino acid sequence of the casein variant B is shown in SEQ ID NO. 3.
α s 1-casein amino acid sequence and corresponding nucleotide sequence are the existing technology, nucleotide fragment of α s 1-casein variant B132 ~ 143 amino acid residue can code mature biological activity polypeptide KEPMIGVNQELA.
Preferably, the bioactive polypeptide has an antioxidant function and an anti-aging function.
In a second aspect of the present invention, there is provided a nucleotide fragment encoding the biologically active polypeptide KEPMIGVNQELA, the sequence of which is: 5'-aaa gaa cct atg ata gga gtg aat cag gaa ctg gcc-3', as shown in SEQ ID NO: 2, respectively.
In the third aspect of the present invention, a preparation method of the bioactive polypeptide KEPMIGVNQELA is provided, which can be artificially synthesized by a genetic engineering method, can be directly obtained from a dairy product by a separation and purification method, and can be directly prepared by chemical synthesis.
In the fourth aspect of the invention, the application of the bioactive polypeptide KEPMIGVNQELA in preparing food, health products, medicines or cosmetics with antioxidant function is provided.
In the fifth aspect of the invention, the application of the bioactive polypeptide KEPMIGVNQELA in preparing food, health-care products or medicines with the anti-aging function is provided.
In a sixth aspect, the invention provides an application of the bioactive polypeptide KEPMIGVNQELA in preparing food, health care products or medicines with antioxidant function and anti-aging function.
Specifically, the bioactive polypeptide KEPMIGVNQELA can be used for preparing cosmetics for reducing free radical damage to skin, and medicines for resisting oxidation and/or aging; and because the product of the bioactive polypeptide KEPMIGVNQELA degraded by gastrointestinal tract still has bioactivity, the bioactive polypeptide KEPMIGVNQELA can also be used for preparing foods such as yoghourt and the like, antioxidant health care products, and oral medicines with antioxidant and/or anti-aging effects.
In a seventh aspect of the invention, there is provided an antioxidant product comprising said biologically active polypeptide KEPMIGVNQELA or a derivative of said biologically active polypeptide KEPMIGVNQELA; the antioxidant product comprises antioxidant food, antioxidant health product, antioxidant medicine or antioxidant cosmetic; the derivative of the biologically active polypeptide KEPMIGVNQELA refers to a polypeptide derivative obtained by performing modifications such as hydroxylation, carboxylation, carbonylation, methylation, acetylation, phosphorylation, esterification or glycosylation on an amino acid side chain group, an amino terminal or a carboxyl terminal of the biologically active polypeptide KEPMIGVNQELA.
In an eighth aspect of the invention, there is provided an anti-aging product comprising the biologically active polypeptide KEPMIGVNQELA or a derivative of the biologically active polypeptide KEPMIGVNQELA; the anti-aging product comprises anti-aging food, anti-aging health care product or anti-aging drug; the derivative of the biologically active polypeptide KEPMIGVNQELA refers to a polypeptide derivative obtained by performing modifications such as hydroxylation, carboxylation, carbonylation, methylation, acetylation, phosphorylation, esterification or glycosylation on an amino acid side chain group, an amino terminal or a carboxyl terminal of the biologically active polypeptide KEPMIGVNQELA.
In the ninth aspect of the present invention, a product having both antioxidant function and anti-aging function is provided, which comprises the bioactive polypeptide KEPMIGVNQELA or the derivative of the bioactive polypeptide KEPMIGVNQELA; products with antioxidant and antiaging effects include food, health product or medicine; the derivative of the biologically active polypeptide KEPMIGVNQELA refers to a polypeptide derivative obtained by performing modifications such as hydroxylation, carboxylation, carbonylation, methylation, acetylation, phosphorylation, esterification or glycosylation on an amino acid side chain group, an amino terminal or a carboxyl terminal of the biologically active polypeptide KEPMIGVNQELA.
The bioactive polypeptide KEPMIGVNQELA has the following beneficial effects: the milk-derived bioactive polypeptide KEPMIGVNQELA has good antioxidant activity and anti-aging activity; on one hand, the bioactive polypeptide KEPMIGVNQELA has good antioxidant activity, can remove free radicals in organisms and improve the quality of life; on the other hand, the activity of an anti-peroxidase system in vivo can be improved, and the function of resisting exogenous stimulation of the organism is enhanced, so that the probability of aging, aging and illness of the organism is reduced, and the method has very important significance for developing foods, health-care products and medicines with antioxidant and anti-aging functions.
Drawings
FIG. 1: mass chromatogram extraction (m/z 664.8516);
FIG. 2: a secondary mass spectrum of a fragment with a mass to charge ratio of 664.8516;
FIG. 3: fragmentation of polypeptide az and by with mass-to-charge ratio of 664.8516;
FIG. 4: [ DPPH. ] methanol Standard Curve;
FIG. 5: tocopherol Trolox standard curve;
FIG. 6: the effect of biologically active polypeptide KEPMIGVNQELA on caenorhabditis elegans under heat stress;
FIG. 7: the effect of biologically active polypeptide KEPMIGVNQELA on caenorhabditis elegans under oxidative stress.
Detailed Description
Before the present embodiments are further described, it is to be understood that the scope of the invention is not limited to the particular embodiments described below; it is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition to the specific methods, devices, and materials used in the examples, any methods, devices, and materials similar or equivalent to those described in the examples may be used in the practice of the invention in addition to the specific methods, devices, and materials used in the examples, in keeping with the knowledge of one skilled in the art and with the description of the invention.
Unless otherwise indicated, the experimental methods, detection methods, and preparation methods disclosed herein all employ techniques conventional in the art of molecular biology, biochemistry, chromatin structure and analysis, analytical chemistry, cell culture, recombinant DNA technology, and related arts. These techniques are well described in the literature, and may be found in particular in the study of the MOLECULAR CLONING, Sambrook et al: a LABORATORY MANUAL, Second edition, Cold Spring harbor LABORATORY Press, 1989and Third edition, 2001; ausubel et al, Current PROTOCOLS Inmolecular BIOLOGY, John Wiley & Sons, New York, 1987and periodic updates; the series METHODS IN ENZYMOLOGY, Academic Press, San Diego; wolffe, CHROMATINSTRUCUTURE AND FUNCTION, Third edition, Academic Press, San Diego, 1998; (iii) Methods Inenzymolygy, Vol.304, Chromatin (P.M. Wassarman and A.P.Wolffe, eds.), academic Press, San Diego, 1999; and METHODS IN MOLECULAR BIOLOGY, Vol.119, chromatography protocols (P.B.Becker, ed.) Humana Press, Totowa, 1999, etc.
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1 Artificial Synthesis of active peptide KEPMIGVNQELA
Synthesis of bioactive peptide
1. 3g of RINK resin (degree of substitution 0.3mmol/g) was weighed into a 150ml reactor and soaked with 50ml of Dichloromethane (DCM).
After 2.2 hours, the resin was washed with 3 resin volumes of N-Dimethylformamide (DMF) and then drained, and this was repeated four times and the resin was drained until use.
3. The Fmoc protecting group on the resin was removed by adding a quantity of 20% piperidine (piperidine/DMF: 1:4, v: v) to the reactor and shaking on a decolourising shaker for 20 min. After deprotection, the resin was washed four times with 3 resin volumes of DMF and then drained.
4. And (3) detecting a small amount of resin by a ninhydrin (ninhydrin) method (detecting A and B, respectively, and reacting at 100 ℃ for 1min), wherein the resin is colored, which indicates that the deprotection is successful.
5. Weighing a proper amount of amino acid Lys and a proper amount of 1-hydroxy-benzotriazole (HOBT) into a 50ml centrifuge tube, adding 20ml of DMF to dissolve the amino acid Lys and the 1-hydroxy-benzotriazole (HOBT), then adding 3ml of N, N diisopropyl carbodiimide (DIC) to shake and shake for 1min, adding the solution into a reactor after the solution is clarified, and then placing the reactor into a30 ℃ shaking table to react.
After 6.2 hours, the column was capped with a suitable amount of acetic anhydride (acetic anhydride: DIEA: DCM ═ 1:1:2, v: v: v) for half an hour, then washed four times with 3 resin volumes of DMF and drained until needed.
7. The Fmoc protecting group on the resin was removed by adding a quantity of 20% piperidine (piperidine/DMF: 1:4, v: v) to the reactor and shaking on a decolourising shaker for 20 min. After deprotection was washed four times with DMF and then drained.
8. And (3) detecting a small amount of resin by a ninhydrin (ninhydrin) method (detecting A and B, respectively, and reacting at 100 ℃ for 1min), wherein the resin is colored, which indicates that the deprotection is successful.
9. Weighing a second proper amount of amino acid and a proper amount of HOBT in a 50ml centrifuge tube, adding 25ml of DMF to dissolve the amino acid and the HOBT, adding 2.5ml of DIC to shake and shake for 1min, adding the solution into a reactor after the solution is clarified, and then placing the reactor in a shaking table at 30 ℃ to react.
After 10.1 hours, a small amount of resin is taken for detection, and the detection is carried out by an indanthrone method (two drops are respectively detected A and B, and the reaction is carried out for 1min at 100 ℃), if the resin is colorless, the reaction is complete; if the resin is colored, the condensation is not complete and the reaction is continued.
11. After the reaction was completed, the resin was washed four times with DMF and then drained, and a certain amount of 20% piperidine (piperidine/DMF ═ 1:4, v: v) was added to the reactor, and the mixture was shaken on a decolorizing shaker for 20min to remove the Fmoc-protecting group from the resin. After the protection is removed, washing with DMF for four times, and then draining to detect whether the protection is removed.
12. The amino acids Glu, Pro, Met, Ile, Gly, Val, Asn, Gln, Glu, Leu and Ala are grafted in sequence according to steps 9-11.
13. After the last amino acid had been grafted, the protection was removed, washed four times with DMF and the resin was drained with methanol. The polypeptide was then cleaved from the resin with 95 cleavage medium (trifluoroacetic acid: 1,2 ethanedithiol: 3, isopropylsilane: water: 95:2:2:1, v: v: v) (10 ml of cleavage medium per gram of resin) and centrifuged four times with glacial ethyl ether (cleavage medium: ethyl ether: 1:9, v: v).
To this end, bioactive peptide KEPMIGVNQELA was synthesized.
Confirmation of biologically active peptides
1) UPLC analysis
UPLC conditions were as follows:
the instrument comprises the following steps: waters ACQUITY UPLC ultra-high performance liquid-electrospray-quadrupole-time-of-flight mass spectrometer
Specification of chromatographic column: BEH C18 chromatographic column
Flow rate: 0.4mL/min
Temperature: 50 deg.C
Ultraviolet detection wavelength: 210nm
Sample introduction amount: 2 μ L
Gradient conditions: solution A: water containing 0.1% formic acid (v/v), liquid B: acetonitrile containing 0.1% formic acid (v/v)
2) Mass spectrometric analysis
The mass spectrometry conditions were as follows:
ion mode: ES +
Mass range (m/z): 100-1000
Capillary voltage (Capillary) (kV): 3.0
Sampling cone (V): 35.0
Ion source temperature (. degree. C.): 115
Desolvation temperature (. degree. C.): 350
Desolventizing gas stream (L/hr): 700.0
Collision energy (eV): 4.0
Scan time (sec): 0.25
Inner scan time (sec): 0.02
According to the analysis method, the ultra-high performance liquid chromatography-electrospray-quadrupole-time-of-flight mass spectrometry is used for carrying out chromatographic analysis and mass spectrometric analysis on the bioactive peptide KEPMIGVNQELA, the mass chromatogram extraction diagram is shown in figure 1, the secondary mass spectrogram of the peak and the az and by fracture conditions are shown in figures 2 and 3, the polypeptide mass-to-charge ratio of the peak is 664.8516Da, and the retention time is 36.9 min.
3) Results
As can be seen from FIG. 3, according to the cases of az and by fragmentation, the fragment with mass-to-charge ratio of 664.8516Da obtained by analysis and calculation of Mascot software has the sequence Lys-Glu-Pro-Met-Ile-Gly-Val-Asn-Gln-Glu-Leu-Ala (KEPMIGVNQELA) and is marked as SEQ ID NO: 1, the fragment corresponds to the residue sequence of 132 th to 143 th positions of α s 1-casein variant B, the GenBank number of the α s 1-casein amino acid sequence is AAA30428.1, and the sequence is shown as SEQ ID NO: 3.
Example 2 antioxidant Activity assay of bioactive peptides
Method for measuring in-vitro antioxidant activity of bioactive peptide KEPMIGVNQELA by adopting [ DPPH ] method
1. Experimental reagents and instruments:
reagent: 1, 1-Diphenyl-2-trinitrophenylhydrazine (1, 1-Diphenyl-2-piperidinylhydrazyl [ DPPH. ]), manufactured by Wako corporation of Japan; methanol, available from Shanghai national drug company; milk-derived bioactive polypeptide KEPMIGVNQELA obtained in example 1.
The main apparatus is as follows: sunrise microplate reader, available from Tecan, austria; 96-well cell culture plates, manufactured by Millipore, usa; analytical balance, product of Meitelei-tolido.
2. The experimental method comprises the following steps:
(1)1mmol/L of [ DPPH. ] methanol solution
0.349mg of [ DPPH ] is weighed by an analytical balance and dissolved in 1mL of methanol solution to prepare 1mmol/L of [ DPPH ] methanol solution, and the tinfoil is stored away from light and ready to use.
(2) Determination of [ DPPH. ] methanol Standard Curve
Add 100 μ L [ DPPH. cndot. ] methanol standard curve sample into 96-well plate according to table 1, let stand for 90min at room temperature, and detect the absorbance at 517nm with enzyme-linked immunosorbent assay.
TABLE 1[ DPPH. methanol Standard Curve solution preparation
From the experimental results, a curve was fitted using Excel and a regression equation was calculated, and the results are shown in fig. 4 (regression equation: y ═ 0.192x +0.2271, R2＝0.9991)。[DPPH·]The linear relation of the methanol standard curve is good, the correlation coefficient is 0.999, and the result shows that [ DPPH ]]The precision and accuracy of the methanol standard curve meet the detection requirements. From the results, the absorbance value was compared with [ DPPH ]]The contents are in inverse proportion, [ DPPH ]]The lower the content, the higher the absorbance, i.e.the greater the ability of the sample to scavenge free radicals.
(3) Method for measuring antioxidant activity of bioactive peptide KEPMIGVNQELA by [ DPPH ]
1) Sample group: adding 80 μ L of 1mmol/L [ DPPH. cndot. ] methanol solution into a 96-well plate, and adding 20 μ L of samples to be tested (KEPMIGVNQELA), positive control 1 (Trolox of 2.5 mg/mL), positive control 2 (Trolox of 0.025 mg/mL), and negative control (phytic acid) at different concentrations according to Table 2;
2) blank group: a blank was made on the same 96-well plate by adding 80. mu.L of a 1mmol/L [ DPPH. ] methanol solution and 20. mu.L of deionized water.
And (3) standing the sample to be detected for 90min at room temperature after the sample loading is finished, and detecting the light absorption value at 517nm by using an enzyme-labeling instrument. The radical scavenging rate was calculated according to the following formula and the experimental results are shown in table 2.
TABLE 2 determination of antioxidant Activity of bioactive Polypeptides by the DPPH method
As can be seen from Table 2, 2.5mg/mL of Trolox as a positive control had the strongest ability to scavenge free radicals under the same conditions, almost all free radicals in solution were scavenged, followed by 0.025mg/mL of Trolox, phytic acid, active polypeptide. The rate of scavenging [ DPPH. ] free radicals by the polypeptide KEPMIGVNQELA is inverted bell-shaped with concentration change, and reaches the highest value at the concentration of 2.5mg/mL, which is 26.11%.
Second, ABTS method for measuring in vitro antioxidant ability of biological active peptide KEPMIGVNQELA
1. Experimental reagents and instrumentation:
total Antioxidant Capacity Assay Kit (Total Antioxidant Capacity Assay Kit with ABTS method) purchased from Shanghai Bintian bioscience, Inc.; ABTS solution, oxidant solution, water-soluble vitamin E (Trolox solution) (10mmol/L), milk-derived bioactive polypeptide KEPMIGVNQELA obtained in example 1.
The main apparatus is as follows: sunrise microplate reader, available from Tecan, austria; 96-well cell culture plates, manufactured by Millipore, usa; analytical balance, product of Meitelei-tolido.
2. The experimental method comprises the following steps:
(1) preparation of ABTS working solution
According to the instruction of the total antioxidant capacity detection kit, mixing the ABTS solution and the ABTS oxidant solution in a ratio of 1:1, and storing for 12-16h in a dark place for use. The prepared ABTS mother liquor is stored at room temperature in a dark place and is stable within 2-3 days. Before use, diluting the ABTS working mother liquor by 38-42 times with PBS, so that after the absorbance of the ABTS working liquor is subtracted from the corresponding PBS blank control, the A734 is 0.7 +/-0.05, and the ABTS working liquor is stored in dark place and is ready for use.
(2) Making determination of standard curve of tocopherol (Trolox)
200 mu L of ABTS working solution is added into each detection hole of a 96-well plate, 10 mu L of tocopherol (Trolox) solution diluted by PBS is added into the detection hole of the standard curve according to the requirements of the table 3, 10 mu L of PBS is added into the blank control hole, and the mixture is gently mixed. After incubation at room temperature for 4min, the absorbance was measured at 734 nm.
TABLE 3 solution formulation for tocopherol (Trolox) standard curve determination
According to the experimental results, Excel is used for fitting a regression curve and obtaining a regression equation, and the results are shown in figure 5. The Trolox standard curve has good linear relation, and the correlation coefficient reaches 0.998, which shows that the accuracy and precision of the standard curve meet the detection requirements and can be used for subsequent result calculation. As can be seen from the figure, the Trolox standard curve has a good inverse relationship with the absorbance, and the higher the concentration of the Trolox solution is, the lower the absorbance at 734nm is, i.e. the stronger the free radical scavenging capability of the tested sample is.
(3) Determination of antioxidant capacity of bioactive polypeptide KEPMIGVNQELA by ABTS method
And adding 200 mu L of ABTS working solution into each detection hole of a 96-well plate, adding 10 mu L of a sample to be detected into the sample detection hole, adding 10 mu L of PBS into the blank control hole, and gently mixing. After incubation at room temperature for 4min, the absorbance was measured at 734nm using a microplate reader. And calculating the total antioxidant capacity of the sample according to the standard curve. The total antioxidant capacity is expressed in terms of the concentration of Trolox standard solution, the radical scavenging rate is calculated according to the following formula, and the experimental results are shown in table 4.
Total antioxidant capacity (mmol/g) ═ CTrolox/CS
In the formula: cTroloxTrolox Standard solution concentration (mmol/L) identical to the absorbance of the sample
CSConcentration of synthetic polypeptide samples (mg/mL)
TABLE 4 ABTS assay Total antioxidant Capacity results for bioactive polypeptide KEPMIGVNQELA
The Total Antioxidant activity of the polypeptide KEPMIGVNQELA in vitro is measured by a Total Antioxidant activity method (Total Antioxidant Capacity Assay Kit with ABTS method), and the result shows that the light absorption value of the bioactive polypeptide KEPMIGVNQELA is reduced to a certain extent compared with that of a blank group, and the bioactive polypeptide has better Capacity of reducing oxidized substances. As can be seen from Table 4, the total antioxidant capacity of the polypeptide KEPMIGVNQELA is increased with the increase of the concentration of the polypeptide, and the total antioxidant level of the polypeptide KEPMIGVNQELA reaches 0.1866mmol/g at the concentration of 5mg/mL, namely, the total antioxidant capacity of the polypeptide is equal to the total antioxidant capacity of 1mmol/L Trolox at the concentration of 5 mg/mL. Thus, the biologically active polypeptide KEPMIGVNQELA of the invention was identified as having significant antioxidant capacity.
Example 3 anti-aging Activity assay of bioactive peptides
Acute heat stress survival rate experiment of bioactive polypeptide KEPMIGVNQELA
1. Experimental reagents and instruments:
reagent: caenorhabditis elegans, subsidiary of the institute for combined Chinese and Western medicine, university of Compound Dane; coli OP50, subsidiary of the university of fudan; agar powder, national drug group chemical reagents limited; yeast powder, national drug group chemical reagents limited; milk-derived bioactive polypeptide KEPMIGVNQELA obtained in example 1.
The instrument equipment comprises: likang RO15 pure water system, Likang biomedical science and technology, Inc.; model G136T Zealway intelligent high temperature sterilization pot, xiamen micro instrument science and technology ltd; THZ-32 type desk type constant temperature oscillator, shanghai smart dense testing equipment ltd; TDL-40B centrifuge, Shanghai' an pavilion scientific instrument factory; luxiang apparatus GL-22M high speed refrigerated centrifuge, Shanghai Luxiang apparatus instruments Ltd; boxun BJ-CD SERIES biosafety cabinet, Shanghai Boxun industries, Inc.; nikko inverted Electron microscope, Nikon corporation.
2. The experimental method comprises the following steps:
(1) preparation of NGM plate
Taking colibacillus strains to streak on an LB plate, picking single colonies in 10ml of LB liquid culture medium, culturing for 24h at 37 ℃ and 200rpm under shaking until OD600 is 0.4 for inoculating NGM plates to feed nematodes. 100 mu L of bacterial liquid is applied to a 60mm NGM plate, and the distance between the edge of the bacterial liquid and the edge of the plate is about 0.5 cm. The coated NGM plates were ready for use overnight at room temperature (21-25 ℃).
(2) Nematode culture
The nematodes used in the experiment are hermaphrodite and grow under standard culture conditions (temperature 20 ℃, humidity 40-60%).
(3) Synchronization treatment of nematodes
1) Bleaching with sodium perchlorate
Preparing a pregnant insect growth plate (more than 80% of insects in the plate are in a reproductive period) 2-3 plates, washing 5ml of M9 buffer solution for 2 times, sucking the buffer solution into a 15ml centrifuge tube, centrifuging at 1000r/min for 3min, and discarding the supernatant. 5ml of fresh contemporaneous bleaching solution was added and shaken vigorously at room temperature for 2.5min to erode the adult worms. Centrifuged and the supernatant discarded. Ensuring that the total treatment time cannot exceed 5min and preventing insect eggs from being damaged. And adding M9 buffer solution to resuspend the precipitate, mixing uniformly, centrifuging, discarding supernatant, and repeating the process for 3 times.
2) Time-limited spawning method
Selecting a plurality of nematodes in the egg laying period in the same plate, wherein the specific quantity is based on the number of the nematodes needing to be synchronized. Under general conditions, one nematode can lay eggs for about 6 within 1 h. After 0.5h incubation in the plates, the nematodes were picked out of the plates and the eggs in the plates were in the same growth phase.
(4) Index measurement
The experiments are divided into a blank group and a polypeptide group, the L4 stage nematodes after the synchronization treatment are placed in corresponding NGM plates, each plate is not less than 40, the experiments are carried out at 35 ℃, the number of the killed and survived nematodes is counted every 1h, the nematode death judgment standard is that no movement and swallowing action exist, no reaction still exists after light touch, the removal standard is that ① escapes to the flat plate wall or the cover to be died, ② eggs hatch in vivo to form bag-shaped worms, and ③ eggs are drilled into agar.
3. Experimental results and analysis:
TABLE 5 Effect of biologically active polypeptide KEPMIGVNQELA on nematodes under Heat stress
As can be seen from Table 5, under the condition of heat stress, half of the death time and the average life span of the experimental group and the blank group have no significant difference, and the longest life span of the experimental group is prolonged by 1 h. Meanwhile, as can be seen from fig. 6, the nematodes are within 0h to 10h, and the blank group is not obviously different from the experimental group; after 10h, the survival rate of the experimental group was slightly higher than that of the blank group. This indicates that feeding polypeptide KEPMIGVNQELA has an insignificant effect on extending nematode longevity under heat stress conditions.
Second, acute oxidative stress survival rate experiment of bioactive polypeptide KEPMIGVNQELA
1. Experimental reagents and instruments:
reagent: caenorhabditis elegans, subsidiary of the institute for combined Chinese and Western medicine, university of Compound Dane; coli OP50, subsidiary of the university of fudan; agar powder, national drug group chemical reagents limited; yeast powder, national drug group chemical reagents limited; 30% hydrogen peroxide solution, national pharmaceutical group chemical reagents ltd; milk-derived bioactive polypeptide KEPMIGVNQELA obtained in example 1.
The instrument equipment comprises: likang RO15 pure water system, Likang biomedical science and technology, Inc.; model G136T Zealway intelligent high temperature sterilization pot, xiamen micro instrument science and technology ltd; THZ-32 type desk type constant temperature oscillator, shanghai smart dense testing equipment ltd; TDL-40B centrifuge, Shanghai' an pavilion scientific instrument factory; luxiang apparatus GL-22M high speed refrigerated centrifuge, Shanghai Luxiang apparatus instruments Ltd; boxun BJ-CD SERIES biosafety cabinet, Shanghai Boxun industries, Inc.; nikko inverted Electron microscope, Nikon corporation.
2. The experimental method comprises the following steps:
(1) preparation of NGM plate
Taking colibacillus strains to streak on an LB plate, picking single colonies in 10ml of LB liquid culture medium, culturing for 24h at 37 ℃ and 200rpm under shaking until OD600 is 0.4 for inoculating NGM plates to feed nematodes. 100 mu L of bacterial liquid is applied to a 60mm NGM plate, and the distance between the edge of the bacterial liquid and the edge of the plate is about 0.5 cm. The coated NGM plates were ready for use overnight at room temperature (21-25 ℃).
(2) Nematode culture
The nematodes used in the experiment are hermaphrodite and grow under standard culture conditions (temperature 20 ℃, humidity 40-60%).
(3) Synchronization treatment of nematodes
1) Bleaching with sodium perchlorate
Preparing a pregnant insect growth plate (more than 80% of insects in the plate are in a reproductive period) 2-3 plates, washing 5ml of M9 buffer solution for 2 times, sucking the buffer solution into a 15ml centrifuge tube, centrifuging at 1000r/min for 3min, and discarding the supernatant. 5ml of fresh contemporaneous bleaching solution was added and shaken vigorously at room temperature for 2.5min to erode the adult worms. Centrifuged and the supernatant discarded. Ensuring that the total treatment time cannot exceed 5min and preventing insect eggs from being damaged. And adding M9 buffer solution to resuspend the precipitate, mixing uniformly, centrifuging, discarding supernatant, and repeating the process for 3 times.
2) Time-limited spawning method
Selecting a plurality of nematodes in the egg laying period in the same plate, wherein the specific quantity is based on the number of the nematodes needing to be synchronized. Under general conditions, one nematode can lay eggs for about 6 within 1 h. After 0.5h incubation in the plates, the nematodes were picked out of the plates and the eggs in the plates were in the same growth phase.
(4) Index measurement
Grouping experiments: blank and polypeptide groups. The L4 stage nematodes after the synchronization treatment were placed in corresponding NGM plates and tested in the presence of 20mM H2O2The number of each plate is not less than 10, the dead number and the survival number of the nematodes are counted every half an hour, the judgment standard of nematode death is that no movement and swallowing action exist, no reaction still exists after the nematode is lightly touched, and the elimination standard is that ① escapes to be flatThe plate wall or the cover is dried to death, ② the eggs of the insects are hatched in vivo to form sacked insects, ③ the eggs are drilled into agar.
3. Experimental results and analysis:
TABLE 6 Effect of biologically active polypeptide KEPMIGVNQELA on nematodes under oxidative stress
As can be seen from Table 6, the mean life span of the nematodes under oxidative stress in the experimental group is significantly improved (P <0.05), and the polypeptide KEPMIGVNQELA group shows an extremely significant difference (P < 0.05). Half of the death time of each group is correspondingly prolonged to a certain extent, and the mixed peptide group shows a remarkable improvement compared with other experimental groups (P < 0.05). As shown in fig. 7, the survival rate of the experimental group was significantly higher than that of the blank group under oxidative stress condition. This indicates that the survival rate of nematodes is significantly improved under oxidative stress conditions, probably because polypeptide KEPMIGVNQELA is effective in helping nematodes resist oxidative damage, scavenge free radicals produced in the body and reduce the accumulation of peroxides, rather than by enhancing their heat tolerance. The prolongation of the life of the organism is due to the improvement of the resistance of cells to stress conditions to a certain extent, so that the delay of aging is greatly related to the survival rate under the stress conditions. The experimental result proves that the polypeptide KEPMIGVNQELA can obviously increase the pressure stress and oxidative stress capability of the nematode, improve the survival rate of the nematode and show that the polypeptide KEPMIGVNQELA with a certain concentration has the anti-aging effect on the nematode.
Third, the pressure acute stress in vivo experiment of the bioactive polypeptide KEPMIGVNQELA
1. Experimental reagents and instruments:
reagent: caenorhabditis elegans, subsidiary of the institute for combined Chinese and Western medicine, university of Compound Dane; coli OP50, subsidiary of the university of fudan; agar powder, national drug group chemical reagents limited; yeast powder, national drug group chemical reagents limited; 30% hydrogen peroxide solution, national pharmaceutical group chemical reagents ltd; malondialdehyde (MDA) assay kit, Nanjing was built into Biotechnology Ltd; a Reactive Oxygen Species (ROS) determination kit, Nanjing, established to Biotechnology Limited; superoxide dismutase (SOD) kit, Nanjing, established Biotech limited; milk-derived bioactive polypeptide KEPMIGVNQELA obtained in example 1.
The instrument equipment comprises: likang RO15 pure water system, Likang biomedical science and technology, Inc.; model G136T Zealway intelligent high temperature sterilization pot, xiamen micro instrument science and technology ltd; THZ-32 type desk type constant temperature oscillator, shanghai smart dense testing equipment ltd; TDL-40B centrifuge, Shanghai' an pavilion scientific instrument factory; luxiang apparatus GL-22M high speed refrigerated centrifuge, Shanghai Luxiang apparatus instruments Ltd; boxun BJ-CD SERIES biosafety cabinet, Shanghai Boxun industries, Inc.; nikko inverted electron microscope, Nikon corporation; JY 92-IID ultrasonic cell disruptor, Shanghai Bilang instruments, Inc.
2. The experimental method comprises the following steps:
(1) preparation of NGM plate
Taking colibacillus strains to streak on an LB plate, picking single colonies in 10ml of LB liquid culture medium, culturing for 24h at 37 ℃ and 200rpm under shaking until OD600 is 0.4 for inoculating NGM plates to feed nematodes. 100 mu L of bacterial liquid is applied to a 60mm NGM plate, and the distance between the edge of the bacterial liquid and the edge of the plate is about 0.5 cm. The coated NGM plates were ready for use overnight at room temperature (21-25 ℃).
(2) Nematode culture
The nematodes used in the experiment are hermaphrodite and grow under standard culture conditions (temperature 20 ℃, humidity 40-60%).
(3) Synchronization treatment of nematodes
1) Bleaching with sodium perchlorate
Preparing a pregnant insect growth plate (more than 80% of insects in the plate are in a reproductive period) 2-3 plates, washing 5ml of M9 buffer solution for 2 times, sucking the buffer solution into a 15ml centrifuge tube, centrifuging at 1000r/min for 3min, and discarding the supernatant. 5ml of fresh contemporaneous bleaching solution was added and shaken vigorously at room temperature for 2.5min to erode the adult worms. Centrifuged and the supernatant discarded. Ensuring that the total treatment time cannot exceed 5min and preventing insect eggs from being damaged. And adding M9 buffer solution to resuspend the precipitate, mixing uniformly, centrifuging, discarding supernatant, and repeating the process for 3 times.
2) Time-limited spawning method
Selecting a plurality of nematodes in the egg laying period in the same plate, wherein the specific quantity is based on the number of the nematodes needing to be synchronized. Under general conditions, one nematode can lay eggs for about 6 within 1 h. After 0.5h incubation in the plates, the nematodes were picked out of the plates and the eggs in the plates were in the same growth phase.
(4) Index measurement
The experiments are divided into a non-treatment experimental group, a heating treatment experimental group and an oxidation treatment experimental group.
Wherein, the non-treatment experimental groups are divided into a blank non-treatment group and a polypeptide non-treatment group. Selecting a plurality of L4 stage nematodes, carrying out synchronization treatment, washing and centrifuging the nematodes by using an M9 buffer solution, removing supernatant, adding a PBS buffer solution, carrying out ultrasonic disruption for 2min, centrifuging to obtain tissue homogenate supernatant, and immediately carrying out determination on indexes of SOD, MDA and ROS according to the kit instructions.
The heat treatment experimental groups are divided into a blank heat treatment group and a polypeptide heat treatment group. The L4 stage nematodes after the synchronization treatment are placed in corresponding NGM plates, each plate is not less than 40, and the experiment is carried out at 35 ℃. After 2h of culture, the indexes are measured, and the detection method is the same as that of the untreated experiment group.
The oxidation treatment experimental groups are divided into a blank oxidation treatment group and a polypeptide oxidation treatment group. The L4 stage nematodes after the synchronization treatment were placed in corresponding NGM plates and tested in the presence of 20mM H2O2Is carried out in NGM plates, the number of each plate being not less than 10. After 1h of culture, various indexes of the strain are measured, and the measuring method is the same as that of the untreated experiment group.
3. Experimental results and analysis:
TABLE 7 Effect of bioactive polypeptide KEPMIGVNQELA on nematode SOD, MDA and ROS
As can be seen from table 7, compared to the blank non-treatment test group, MDA and ROS values in the blank heat treatment test group and the blank oxidation treatment test group were significantly increased, and SOD was significantly decreased (P <0.05), which indicates that neither heat stress nor oxidation stress can cause damage to nematode organisms. It can also be found from the table that both MDA and SOD in the polypeptide non-treated group showed significant difference compared to the blank group.
Under 35 ℃ treatment conditions, only MDA was reduced in the polypeptide group (P <0.05), whereas ROS and SOD were unchanged. This further confirms that milk-derived small peptides do not improve their heat resistance under stress conditions. Under the condition of 20mM H2O2 treatment, the values of SOD and ROS in the polypeptide group both show significant changes (P <0.05), wherein the MDA value of the polypeptide group shows very significant reduction (P < 0.01). The analysis shows that the bioactive peptide KEPMIGVNQELA can effectively improve the SOD content in the body of the nematode, reduce the generation of lipid peroxide and active oxygen, and show good functions of resisting oxidation and scavenging free radicals.
Induced enzymes such as SOD can remove excessive free radicals in time, maintain the metabolic balance of the free radicals in vivo, and is an index for measuring the health condition of organisms; MDA can reflect the reaction degree of lipid peroxide in the organism and indirectly reflect the damage degree of the organism; the reactive oxygen species, ROS, are produced by aerobic cells during metabolism and can cause apoptosis through oxidative stress. Therefore, the combined use of the three indexes can well reflect the oxidation resistance and the damage degree of the organism. According to the results of the experiment, the bioactive peptide KEPMIGVNQELA can improve the activity of antioxidant enzymes in the nematode body to a certain extent, effectively protect the organism against oxidative damage and remove free radicals under the oxidative stress condition, but can not obviously improve the heat resistance.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Sequence listing
<110> Zhejiang ghui peptide Life health science and technology Limited; shanghai platinum Biotech Ltd
<120> a bioactive polypeptide KEPMIGVNQELA, and its preparation method and application
<160>3
<170>SIPOSequenceListing 1.0
<210>1
<211>12
<212>PRT
<213> Artificial Sequence (Artificial Sequence)
<400>1
Lys Glu Pro Met Ile Gly Val Asn Gln Glu Leu Ala
1 5 10
<210>2
<211>36
<212>DNA
<213> Artificial Sequence (Artificial Sequence)
<400>2
aaagaaccta tgataggagt gaatcaggaa ctggcc 36
<210>3
<211>199
<212>PRT
<213> Artificial Sequence (Artificial Sequence)
<400>3
Arg Pro Lys His Pro Ile Lys His Gln Gly Leu Pro Gln Glu Val Leu
1 5 10 15
Asn Glu Asn Leu Leu Arg Phe Phe Val Ala Pro Phe Pro Gln Val Phe
20 25 30
Gly Lys Glu Lys Val Asn Glu Leu Ser Lys Asp Ile Gly Ser Glu Ser
35 40 45
Thr Glu Asp Gln Ala Met Glu Asp Ile Lys Glu Met Glu Ala Glu Ser
50 55 60
Ile Ser Ser Ser Glu Glu Ile Val Pro Asn Ser Val Glu Gln Lys His
65 70 75 80
Ile Gln Lys Glu Asp Val Pro Ser Glu Arg Tyr Leu Gly Tyr Leu Glu
85 90 95
Gln Leu Leu Arg Leu Lys Lys Tyr Lys Val Pro Gln Leu Glu Ile Val
100 105 110
Pro Asn Ser Ala Glu Glu Arg Leu His Ser Met Lys Gln Gly Ile His
115 120 125
Ala Gln Gln Lys Glu Pro Met Ile Gly Val Asn Gln Glu Leu Ala Tyr
130 135 140
Phe Tyr Pro Glu Leu Phe Arg Gln Phe Tyr Gln Leu Asp Ala Tyr Pro
145 150 155 160
Ser Gly Ala Trp Tyr Tyr Val Pro Leu Gly Thr Gln Tyr Thr Asp Ala
165 170 175
Pro Ser Phe Ser Asp Ile Pro Asn Pro Ile Gly Ser Glu Asn Ser Glu
180 185 190
Lys Thr Thr Met Pro Leu Trp
195
Claims (9)
1. A biologically active polypeptide KEPMIGVNQELA, having the amino acid sequence Lys-Glu-Pro-Met-Ile-Gly-Val-Asn-Gln-Glu-Leu-Ala.
2. A nucleotide fragment encoding the biologically active polypeptide KEPMIGVNQELA of claim 1, wherein the nucleotide fragment has the sequence set forth in SEQ ID NO: 2, respectively.
3. The method of claim 1, wherein the biologically active polypeptide KEPMIGVNQELA is synthesized by genetic engineering methods or is prepared directly by chemical synthesis.
4. The use of the biologically active polypeptide KEPMIGVNQELA of claim 1, wherein the biologically active polypeptide KEPMIGVNQELA is used in the preparation of a food, a health product, a pharmaceutical or a cosmetic product with antioxidant activity.
5. The use of the biologically active polypeptide KEPMIGVNQELA of claim 1, wherein the biologically active polypeptide KEPMIGVNQELA is used in the preparation of a food, a health product or a pharmaceutical product with anti-aging properties.
6. The use of the biologically active polypeptide KEPMIGVNQELA of claim 1, wherein the biologically active polypeptide KEPMIGVNQELA is used in the preparation of a food, a health product or a pharmaceutical product with antioxidant and anti-aging properties.
7. An antioxidant product comprising the biologically active polypeptide KEPMIGVNQELA of claim 1; the antioxidant product comprises antioxidant food, antioxidant health product, antioxidant medicine or antioxidant cosmetic.
8. An anti-aging product comprising the biologically active polypeptide KEPMIGVNQELA of claim 1; the anti-aging product comprises anti-aging food, anti-aging health care products or anti-aging drugs.
9. A product having antioxidant and anti-aging properties comprising the biologically active polypeptide KEPMIGVNQELA of claim 1; the product with antioxidant and antiaging effects comprises food, health product or medicine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320772.3A CN108017709B (en) | 2017-12-12 | 2017-12-12 | Bioactive polypeptide KEPMIGVNQELA, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320772.3A CN108017709B (en) | 2017-12-12 | 2017-12-12 | Bioactive polypeptide KEPMIGVNQELA, and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108017709A CN108017709A (en) | 2018-05-11 |
| CN108017709B true CN108017709B (en) | 2020-04-10 |
Family
ID=62072993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711320772.3A Active CN108017709B (en) | 2017-12-12 | 2017-12-12 | Bioactive polypeptide KEPMIGVNQELA, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108017709B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1556074A4 (en) * | 2001-08-30 | 2008-05-07 | Chay 13 Medical Res Group N V | Casein derived peptides and uses thereof in therapy |
| EP1359157A1 (en) * | 2002-04-29 | 2003-11-05 | Société des Produits Nestlé S.A. | Metallo-proteinase inhibitory agent |
| EP1751179A4 (en) * | 2004-03-01 | 2009-03-25 | Peptera Pharmaceuticals Ltd | Casein derived peptides and therapeutic uses thereof |
| US7968513B2 (en) * | 2005-05-02 | 2011-06-28 | Mileutis Ltd. | Pharmaceutical compositions comprising casein derived peptides and methods of use thereof |
-
2017
- 2017-12-12 CN CN201711320772.3A patent/CN108017709B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108017709A (en) | 2018-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107226860B (en) | Bioactive polypeptide SKHSSLDCVL, and preparation method and application thereof | |
| CN107176995B (en) | Bioactive polypeptide SKVLPVPEKAVPYPQ, and preparation method and application thereof | |
| CN107226857B (en) | Bioactive polypeptide TIASGEPT and preparation method and application thereof | |
| CN107236031B (en) | Bioactive polypeptide PMIGVNQELAY, and preparation method and application thereof | |
| CN107163136B (en) | Bioactive polypeptide WNIPMGLIVNQ, and preparation method and application thereof | |
| CN107141346B (en) | Bioactive polypeptide ATLEDSPEVI, and preparation method and application thereof | |
| CN107200782B (en) | Bioactive polypeptide VAVVKKGSNFQ, and preparation method and application thereof | |
| CN107177000B (en) | Bioactive polypeptide DRAAHVKQVL, and preparation method and application thereof | |
| CN107188949B (en) | Bioactive polypeptide EINTVQVTST, and preparation method and application thereof | |
| CN108794593B (en) | Bioactive polypeptide GSVNDVQ and preparation method and application thereof | |
| CN108997483B (en) | Bioactive polypeptide DQDLVLI and preparation method and application thereof | |
| CN108794587B (en) | Bioactive polypeptide KVTPYQA and preparation method and application thereof | |
| CN108794605B (en) | Bioactive polypeptide SRPETSG, and preparation method and application thereof | |
| CN108794603B (en) | Bioactive polypeptide TVTMLMTTIL, and preparation method and application thereof | |
| CN108794600B (en) | Bioactive polypeptide SNLIEVT and preparation method and application thereof | |
| CN108586588B (en) | Bioactive polypeptide APMISAASVH, and preparation method and application thereof | |
| CN107814842B (en) | Bioactive polypeptide SQSKVLPVPE, and preparation method and application thereof | |
| CN107759666B (en) | Bioactive polypeptide AQTQSLVYPFPGPIHN, and preparation method and application thereof | |
| CN108558991B (en) | Bioactive polypeptide GIQDPKEP and preparation method and application thereof | |
| CN109160945B (en) | Bioactive polypeptide DKLAQ and preparation method and application thereof | |
| CN110938131A (en) | Bioactive polypeptide RDLDAPDDVDFF, and preparation method and application thereof | |
| CN108794596B (en) | Bioactive polypeptide ENPRAF and preparation method and application thereof | |
| CN111100196A (en) | Bioactive polypeptide QILSVPGWTYSR, and preparation method and application thereof | |
| CN108017709B (en) | Bioactive polypeptide KEPMIGVNQELA, and preparation method and application thereof | |
| CN107814843B (en) | Bioactive polypeptide VMFPPQ and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |