CN107840879A - A kind of biologically active polypeptide NEINQFYQKFPQ and its preparation method and application - Google Patents

A kind of biologically active polypeptide NEINQFYQKFPQ and its preparation method and application Download PDF

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Publication number
CN107840879A
CN107840879A CN201711124019.7A CN201711124019A CN107840879A CN 107840879 A CN107840879 A CN 107840879A CN 201711124019 A CN201711124019 A CN 201711124019A CN 107840879 A CN107840879 A CN 107840879A
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neinqfyqkfpq
biologically active
active polypeptide
polypeptide
inflammatory
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张少辉
范梦珠
吴静
王乾宇
李文瑾
黄犇
汪超
李阜烁
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Zhejiang Peptide Life Health Science And Technology Co Ltd
Shanghai Jiaotong University
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Zhejiang Peptide Life Health Science And Technology Co Ltd
Shanghai Jiaotong University
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4732Casein
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, 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
    • A23L33/00Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/10Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
    • A23L33/17Amino acids, peptides or proteins
    • A23L33/18Peptides; Protein hydrolysates
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/64Proteins; Peptides; Derivatives or degradation products thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/08Anti-ageing preparations
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides

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Abstract

The present invention relates to albumen field, and in particular to its amino acid sequence of a kind of biologically active polypeptide NEINQFYQKFPQ and its preparation method and application, biologically active polypeptide NEINQFYQKFPQ is Asn Glu Ile Asn Gln Phe Tyr Gln Lys Phe Pro Gln.By extracorporeal anti-inflammatory activity experiment, internal Antisenility Experiment, demonstrating polypeptide NEINQFYQKFPQ has preferable anti-inflammatory activity and activity of fighting against senium, on the one hand, the biologically active polypeptide NEINQFYQKFPQ of the present invention can promote Factor of Macrophage, promote the increase of the macrophage nitric oxide amount of inducing, the ability that body resists extraneous pathogenic infection is improved, reduces the body incidence of disease;On the other hand, the vigor of internal anti-peroxidation enzyme system can be improved, strengthen the function of body resistance external source sexual stimulus, so as to reduce organism aging process, aging and sick probability, exploitation is of great significance with anti-inflammatory properties, the food of anti-senescence function, health products and medicine tool.

Description

A kind of biologically active polypeptide NEINQFYQKFPQ and its preparation method and application
Technical field
The present invention relates to albumen field, more particularly, to a kind of biologically active polypeptide NEINQFYQKFPQ and preparation method thereof And application.
Background technology
During cow's milk is through lactobacillus-fermented, a part of protein in cow's milk is metabolized by lactic acid bacteria to be utilized, concurrently A series of biochemical reactions have been given birth to, protein is changed into polypeptide or free amino acid, is digested or passes through The absorption and transport of intestinal epithelial cell is directly entered the blood circulation of human body.In these polypeptides, some has special Physiological function, it is referred to as " biologically active peptide ".
It is particularly important that safe biologically active peptide is found in natural food source.In the last few years, it has been found that some foods The polypeptides matter in thing source has good bioactivity, such as corn small peptide, Soybean Peptide, cow's milk polypeptide.These polypeptides can To be obtained by number of ways such as microbial fermentation, digestion enzymolysis, and the polypeptide with bioactivity is by 2~20 mostly Amino acid residue forms, and molecular weight is less than 6000Da, contains a certain amount of hydrophobic amino acid, aromatic amino acid.
Immune-active peptides are to obtain and prove that one kind biology of its physiologically active is living from breast first after opioid peptides discovery Property polypeptide.Jolles in 1981 et al. has found first, using trypsin hydrolysis people lactoprotein, can obtain an amino acid sequence Val-Glu-Pro-Ile-Pro-Tyr hexapeptide is classified as, experiment in vitro proves that the peptide can strengthen Turnover of Mouse Peritoneal Macrophages pair The phagocytosis of sheep red blood cell (SRBC).Migliore-Samour et al. has found the hexapeptide Thr-Thr-Met-Pro- from casein Leu-Trp can stimulate phagocytosis and enhancing of the sheep erythrocyte to mouse peritoneal macrophages for kerekou pneumonia primary The resistance of bacterium, there are anti-inflammatory properties.Li Su duckweeds et al. find that rat abdominal cavity is huge with newborn source peptide (PGPIPN) the feeding rat of synthesis The anti-inflammatory properties that the phagocytosis of phagocyte is related to red blood cell have significant enhancing.
Research shows that immune-active peptides can not only strengthen immunity of organisms, stimulates the propagation of body lymphocyte, enhancing The phagocytic function of macrophage, promote the release of cell factor, the increase for promoting the macrophage nitric oxide amount of inducing, raising machine Body resists the ability of extraneous pathogenic infection, reduces the body incidence of disease, and will not cause the immunological rejection of body.
Aging is a natural phenomena, and process is often accompanied by the change of antioxidant levels, organ-tissue, immune factor, its The change of complexity, the trend that such as proinflammatory cytokine IL-6, IL-4, TNF-α presentation increase, IL-6 occur for middle cell factor It is all considered to play an important role in the generating process of geriatric disease with TNF-a.With science of heredity and molecular biology Development, the research of biological decay mechanism achieve gratifying progress.Researcher by using some model organisms, as mouse, The term single gene mutating experiment of drosophila and C. Elegans Automatic Screening etc., it is found that some genes can dramatically increase life-spans of these organisms and reach As many as 6 times.
Anti-aging peptide in terms of physiological function there is amino acid can not compare excellent as a kind of emerging antidotal agent Gesture, it can produce promotion or inhibitory action to the enzyme in organism, improve absorption and the profit to mineral matter and other nutrients With, removing interior free yl, the resistance to oxidation of enhancing body itself, with anti-aging.Therefore, the nutrition and health care of biologically active peptide Effect has turned into the emphasis of domestic and foreign scholars subject study.Qiu Juan et al. pass through experimental studies have found that, milk-derived bioactive micro peptide Life span of drosophila melanogaster can effectively be extended, delay its aging, and also there is preferable antioxidation, thus it is speculated that be probably wherein to be rich in coloured glaze Base peptides.SOD vigor in serum, reduces its lipid in discovery bovine colostrum extract energy conspicuousness raising the elderly's body such as the brightness in week Peroxide and enhancing body resistance to oxidation, have certain anti-senescence function.
The research on biologically active polypeptide has much at present, for example Chinese patent CN105254738A discloses one kind and come The milk-derived biologically active polypeptide DELQDKIH of beta-casein is come from, Chinese patent CN105254739A discloses one kind and derived from The milk-derived biologically active polypeptide GTQYTD of α s1- caseins, Chinese patent CN105254740A, which are disclosed, a kind of derives from α s2- The milk-derived biologically active polypeptide NQFYQKF of casein.
The content of the invention
It is an object of the invention to provide a kind of biologically active polypeptide NEINQFYQKFPQ and its preparation method and application.
The purpose of the present invention can be achieved through the following technical solutions:
First aspect present invention, there is provided a kind of biologically active polypeptide NEINQFYQKFPQ, its amino acid sequence are Asn- Glu-Ile-Asn-Gln-Phe-Tyr-Gln-Lys-Phe-Pro-Gln, such as SEQ ID NO:Shown in 1.
Preferably, the biologically active polypeptide is milk-derived.α s2- caseins are derive specifically from, and are α s2- caseins The amino acid residue that modification A is the 98th~109.α s2- ss-casein variants A amino acid sequences such as SEQ ID NO:Shown in 3.
The amino acid sequence and corresponding nucleotides sequence of α s2- caseins are classified as existing technology, and coding for alpha s2- caseins become The biologically active polypeptide NEINQFYQKFPQ of the nucleotide fragments energy encoding mature of the amino acids residues of body A the 98th~109.
Preferably, the biologically active polypeptide has anti-inflammatory properties and anti-senescence function.
Second aspect of the present invention, there is provided the nucleotide fragments of the biologically active polypeptide NEINQFYQKFPQ are encoded, its Sequence is:5 '-aat gaa atc aat cag ttt tat cag aag ttc ccc cag-3 ', such as SEQ ID NO:2 institutes Show.
Third aspect present invention, there is provided the preparation method of the biologically active polypeptide NEINQFYQKFPQ, can pass through The method of genetic engineering is artificial synthesized, can be directly obtained, can directly passed through by the method isolated and purified from dairy products It is prepared by chemical synthesis.
Fourth aspect present invention, there is provided the biologically active polypeptide NEINQFYQKFPQ is being prepared with anti-inflammatory properties Application in food, health products, medicine or cosmetics.
Fifth aspect present invention, there is provided the biologically active polypeptide NEINQFYQKFPQ has anti-senescence function in preparation Food, the application in health products or medicine.
Sixth aspect present invention, there is provided the biologically active polypeptide NEINQFYQKFPQ is being prepared while had anti-inflammatory work( Can be with the application in the food, health products or medicine of anti-senescence function.
Specifically, biologically active polypeptide NEINQFYQKFPQ of the invention, which can be used for preparing, reduces free radical to skin The cosmetics of injury, prepare the medicine with anti-inflammatory and/or anti-aging;And due to the biologically active polypeptide of the present invention Product after NEINQFYQKFPQ is degraded by intestines and stomach still has bioactivity, therefore can be also used for preparing the food such as Yoghourt Product, the health products for adjusting immunity, and the oral medicine being used to prepare with anti-inflammatory and/or anti-aging.
Seventh aspect present invention, there is provided a kind of anti-inflammatory products, including the biologically active polypeptide NEINQFYQKFPQ or The derivative of the biologically active polypeptide NEINQFYQKFPQ;Described anti-inflammatory products include anti-inflammatory food, anti-inflammatory health product, resisted Scorching medicine or anti-inflammatory cosmetics;The derivative of the biologically active polypeptide NEINQFYQKFPQ, refers in biologically active polypeptide On NEINQFYQKFPQ amino acid side groups, aminoterminal or c-terminus carry out hydroxylating, carboxylated, be carbonylated, methylate, Acetylation, phosphorylation, esterification or glycosylation etc. are modified, obtained polypeptide derivative.
Eighth aspect present invention, there is provided a kind of anti-aging product, including the biologically active polypeptide NEINQFYQKFPQ Or the derivative of the biologically active polypeptide NEINQFYQKFPQ;Described anti-aging product includes antisenility cistanche food, anti-aging Health products or antiaging agent;The derivative of the biologically active polypeptide NEINQFYQKFPQ, refers in biologically active polypeptide On NEINQFYQKFPQ amino acid side groups, aminoterminal or c-terminus carry out hydroxylating, carboxylated, be carbonylated, methylate, Acetylation, phosphorylation, esterification or glycosylation etc. are modified, obtained polypeptide derivative.
Ninth aspect present invention, there is provided product a kind of while that there is anti-inflammatory properties and anti-senescence function, including it is described Biologically active polypeptide NEINQFYQKFPQ or described biologically active polypeptides NEINQFYQKFPQ derivative;With anti-inflammatory properties and The product of anti-senescence function includes food, health products or medicine;The derivative of the biologically active polypeptide NEINQFYQKFPQ, it is Refer on biologically active polypeptide NEINQFYQKFPQ amino acid side groups, aminoterminal or c-terminus carry out hydroxylating, carboxyl Change, be carbonylated, methylating, acetylation, phosphorylation, the modification such as esterification or glycosylation, obtained polypeptide derivative.
Biologically active polypeptide NEINQFYQKFPQ's of the present invention has the beneficial effect that:The milk-derived biologically active polypeptide of the present invention NEINQFYQKFPQ has preferable anti-inflammatory activity and activity of fighting against senium;On the one hand, biologically active polypeptide of the invention NEINQFYQKFPQ can promote Factor of Macrophage, promote the increase of the macrophage nitric oxide amount of inducing, carry High body resists the ability of extraneous pathogenic infection, reduces the body incidence of disease;On the other hand, it is possible to increase internal antiperoxidase The vigor of system, the function of enhancing body resistance external source sexual stimulus are split so as to reduce organism aging process, aging and sick probability Hair is of great significance with anti-inflammatory properties, the food of anti-senescence function, health products and medicine tool.
Brief description of the drawings
Fig. 1:Mass chromatography extraction figure (m/z=778.8757);
Fig. 2:Mass-to-charge ratio is the second order mses figure of 778.8757 fragment;
Fig. 3:Mass-to-charge ratio is 778.8757 polypeptide az, by crack conditions;
Fig. 4:Influence situations of the biologically active polypeptide NEINQFYQKFPQ to drosophila survival rate.
Embodiment
Before specific embodiments of the present invention are further described, it should be appreciated that protection scope of the present invention is not limited to down State specific specific embodiment;It is also understood that the term used in the embodiment of the present invention is specific specific in order to describe Embodiment, the protection domain being not intended to be limiting of the invention.
When embodiment provides number range, it should be appreciated that except non-invention is otherwise noted, two ends of each number range Any one numerical value can be selected between point and two end points.Unless otherwise defined, in the present invention all technologies for using and Scientific terminology is identical with the meaning that those skilled in the art of the present technique are generally understood that.Except used in embodiment specific method, equipment, Outside material, according to grasp of the those skilled in the art to prior art and the record of the present invention, it can also use and this Any method, equipment and the material of the similar or equivalent prior art of method, equipment described in inventive embodiments, material come real The existing present invention.
Unless otherwise indicated, disclosed in this invention experimental method, detection method, preparation method using this technology lead Domain conventional molecular biology, biochemistry, chromatin Structure and analysis, analytical chemistry, cell culture, recombinant DNA technology and The routine techniques of association area.These technologies existing perfect explanation in the prior art, for details, reference can be made to Sambrook etc. MOLECULAR CLONING:A LABORATORY MANUAL, Second edition, Cold Spring Harbor Laboratory Press, 1989and Third edition, 2001;Ausubel etc., CURRENT PROTOCOLS IN MOLECULAR BIOLOGY, John Wiley&Sons, New York, 1987and periodic updates;the Series METHODS IN ENZYMOLOGY, Academic Press, San Diego;Wolffe, CHROMATIN STRUCTURE AND FUNCTION, Third edition, Academic Press, San Diego, 1998;METHODS IN ENZYMOLOGY, Vol.304, Chromatin (P.M.Wassarman and A.P.Wolffe, eds.), Academic Press, San Diego, 1999;With METHODS IN MOLECULAR BIOLOGY, Vol.119, Chromatin Protocols (P.B.Becker, ed.) Humana Press, Totowa, 1999 etc..
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The active peptide NEINQFYQKFPQ's of embodiment 1 is artificial synthesized
First, the synthesis of biologically active peptide
1. RINK resin 3g (substitution value 0.3mmol/g) are weighed in 150ml reactor, with 50ml dichloromethane (DCM) soak.
After 2.2 hours, resin is washed with nitrogen-dimethylformamide (DMF) of 3 times of resin volumes, is then drained, so weight It is multiple four times, resin is drained rear stand-by.
3. a certain amount of 20% piperidines (piperidines/DMF=1 is added into reactor:4,v:V), it is placed on decolorization swinging table and shakes 20min is shaken, the Fmoc blocking groups on resin are sloughed with this.Washed four times with the DMF of 3 times of resin volumes after having taken off protection, Then drain.
4. take the detection of a small amount of resin ninhydrin (nine well ninhydrins) method (each two drop of inspection A, inspection B, 100 DEG C of reactions 1min), resin has color, illustrates to be deprotected successfully.
5. weigh amino acid Asn in right amount and 1- hydroxyls-benzene a pair of horses going side by side triazole (HOBT) is in right amount in 50ml centrifuge tube, addition 20ml DMF is dissolved, and then adds 3ml N, and N DICs (DIC) vibration shakes up 1min, treats that solution is clear It is added to after clear in reactor, then reactor is placed in 30 DEG C of shaking table and reacted.
After 6.2 hours, with a certain amount of acetic anhydride end socket (acetic anhydride:DIEA:DCM=1:1:2,v:v:V) half an hour, so Washed four times, drained stand-by with the DMF of 3 times of resin volumes afterwards.
7. a certain amount of 20% piperidines (piperidines/DMF=1 is added into reactor:4, v:V), it is placed on decolorization swinging table and shakes 20min is shaken, the Fmoc blocking groups on resin are sloughed with this.Washed four times with DMF after having taken off protection, then drained.
8. take the detection of a small amount of resin ninhydrin (nine well ninhydrins) method (each two drop of inspection A, inspection B, 100 DEG C of reactions 1min), resin has color, illustrates to be deprotected successfully.
9. weighing second amino acid next in right amount and HOBT being in right amount in 50ml centrifuge tube, 25ml DMF generals are added It dissolves, and the DIC vibrations for then adding 2.5ml shake up 1min, are added to after solution clarification in reactor, then by reactor It is placed in 30 DEG C of shaking table and reacts.
After 10.1 hours, take a small amount of resin to detect, (each two drop of inspection A, inspection B, 100 DEG C of reactions are detected with ninhydrin method 1min), if resin is colourless, illustrate that reaction is complete;If resin has color, illustrate that condensation is incomplete, continue to react.
After 11. question response is complete, washs resin four times with DMF, then drain, a certain amount of 20% is added into reactor Piperidines (piperidines/DMF=1:4,v:V), it is placed on decolorization swinging table and rocks 20min, the Fmoc protection groups on resin is sloughed with this Group.Washed four times with DMF after having taken off protection, then drain whether detection protection sloughs.
12. amino acid Glu, Ile, Asn, Gln, Phe, Tyr, Gln, Lys, Phe, Pro are connected successively according to step 9-11 And Gln.
13. after last amino acid is connected, protection is sloughed, is washed four times with DMF, is then taken out resin with methanol It is dry.Then with 95 cutting liquid (trifluoroacetic acids:1,2 dithioglycols:3, isopropyl base silane:Water=95:2:2:1, v:v:V) by polypeptide Cut down from resin (every gram of resin adds 10ml cutting liquids), and with ice ether (cutting liquid:Ether=1:9,v:V) centrifugation is heavy Drop four times.
So far, artificial synthesized biologically active peptide NEINQFYQKFPQ.
2nd, the confirmation of biologically active peptide
1) UPLC is analyzed
UPLC conditions are as follows:
Instrument:Waters ACQUITY UPLC ultra high efficiency liquid phase-electron spray-level Four bar-time of-flight mass spectrometer
Chromatographic column specification:BEH C18 chromatographic columns
Flow velocity:0.4mL/min
Temperature:50℃
Ultraviolet detection wavelength:210nm
Sample size:2μL
Gradient condition:A liquid:Water containing 0.1% formic acid (v/v), B liquid:Acetonitrile containing 0.1% formic acid (v/v)
2) mass spectral analysis
Mass Spectrometry Conditions are as follows:
Ionic means:ES+
Mass range (m/z):100-1000
Capillary voltage (Capillary) (kV):3.0
Sampling spiroid (V):35.0
Ion source temperature (DEG C):115
Remove solvent temperature (DEG C):350
Go solvent stream (L/hr):700.0
Collision energy (eV):4.0
Sweep time (sec):0.25
Interior sweep time (sec):0.02
According to above analysis method, using ultra high efficiency liquid phase-electron spray-level Four bar-flight time mass spectrum, to bioactivity Peptide NEINQFYQKFPQ carries out chromatography and mass spectral analysis, and its mass chromatography extraction figure is as shown in figure 1, extract the two level at this peak As shown in Figures 2 and 3, the polypeptide mass-to-charge ratio that can obtain this peak is 778.8757Da, and retention time is for mass spectrogram and az, by crack conditions 51.1min。
3) result
From the figure 3, it may be seen that situation about being broken according to az, by, calculates by Mascot software analysis, obtains mass-to-charge ratio 778.8757Da fragment sequence be Asn-Glu-Ile-Asn-Gln-Phe-Tyr-Gln-Lys-Phe-Pro-Gln (NEINQFYQKFPQ) SEQ ID NO, are designated as:1.The fragment and α s2- ss-casein variants A the 98th~109 residue sequence phase Corresponding, the GenBank numberings of α s2- casamino acid sequences are AAA30479.1, and sequence is shown in SEQ ID NO:3.
The anti-inflammatory activity experiment of the biologically active peptide of embodiment 2
First, the experiment (ELISA method) of biologically active polypeptide NEINQFYQKFPQ rush Factor of Macrophage
1. experiment reagent and instrument:
Reagent:Experimental animal balb/c mouse (male 6-8 week old), Shanghai Slac Experimental Animal Co., Ltd.;Mouse Lymphocyte extract solution, Shanghai Suo Laibao bio tech ltd;RPMI1640 culture mediums, GIBCO companies;Bovine serum albumin (bovine serum albumin, BSA) in vain, Genebase companies;The milk-derived biologically active polypeptide that embodiment 1 obtains NEINQFYQKFPQ;ELISA cell factors Quick kit (TNF-α, IL-1 β and IL-6), Wuhan doctor's moral bioengineering has Limit company.
Instrument and equipment:LRH-250F biochemical cultivation cases Shanghai perseverance Science and Technology Ltd.;On GL-22M high speed freezing centrifuges Hai Luxiang instrument centrifuges Instrument Ltd.;Hera cell 150CO2 incubator Heraeus companies;Dragon Wellscan MK3 ELIASA Labsystems companies.
2. experimental method:
It is 2 × 10 to add number of cells6/ ml μ l/ the holes of cell suspension 100, it is adherent to add after purification containing peptide The μ l/ holes of RPMI1640 complete culture solutions (10%FBS) 200, inflammation group added LPS to the μ g/ml of final concentration 10 at 24 hours, even Continuous culture 48 hours, inflammation group add LPS to final concentration 100ng/ml in 24 hours before culture terminates.After culture terminates, centrifugation Collect cell culture supernatant liquid.100 μ l supernatants, 37 DEG C of reactions 90 are added in the ELISA Plate of coated cell factor antibody After minute, biotin labelled antibodies are added, 37 DEG C are reacted 60 minutes, and after PBS washings, it is compound to add Avidin-peroxidase Thing, react 30 minutes.Nitrite ion is added after PBS washings, is reacted 20 minutes.After adding colour developing terminate liquid, using ELIASA in ripple Absorbance (OD450) is determined under long 450nm.
3. experimental result and analysis:
The measure that the biologically active peptide NEINQFYQKFPQ of table 1 influences on Macrophage Cell factor level
Note:*, compared with negative control, there is significant difference (P < 0.05);*, compared with negative control group, have significantly Sex differernce (P < 0.01)
As can be known from Table 1, TNF-α, IL-1 β and IL-6 these three cell factors experimental result in, TNF-α, IL-1 β In 0.2mg/ml and significant difference (P < 0.01) is appeared above, IL-6 significant difference (P < occurs in 0.5mg/ml 0.01), it was demonstrated that the NEINQFYQKFPQ under finite concentration can promote Turnover of Mouse Peritoneal Macrophages to activate and discharge TNF-α, IL- 1 β, IL-6, floors of these cell factors under normal macrophages quiescent condition is improved, so as to adjust the immunity of body.
2nd, the measure (Griess methods) of the biologically active polypeptide NEINQFYQKFPQ rush macrophage nitric oxide amount of inducing
1. experiment reagent and instrument:
Reagent:Experimental animal balb/c mouse (male 6-8 week old) Shanghai Communications University is agriculture real with biological institute animal Test center;The milk-derived biologically active polypeptide NEINQFYQKFPQ that embodiment 1 obtains;LPS, purchased from Sigma companies;Dimethyl diaminophenazine chloride contaminates Color liquid, green skies biotechnology research institute production.
Instrument and equipment:LRH-250F biochemical cultivation cases Shanghai perseverance Science and Technology Ltd.;On GL-22M high speed freezing centrifuges Hai Luxiang instrument centrifuges Instrument Ltd.;Hera cell 150CO2 incubator Heraeus companies;Dragon Wellscan MK3 ELIASA Labsystems companies.
2. test method:
It is 2 × 10 to add number of cells6/ ml μ l/ the holes of cell suspension 100, it is adherent to add after purification containing peptide The μ l/ holes of RPMI1640 complete culture solutions (10%FBS) 200, inflammation group add LPS to the μ g/ml of final concentration 10 in 24h, continuously After cultivating 48h, the μ l/ holes of nutrient solution supernatant 50 are collected, add Griess reagents 1 and Griess reagents successively in nutrient solution supernatant 2 each 50 μ l/ holes, after reacting at room temperature 10 minutes, absorbance (OD540) is determined under 540nm wavelength.
3. experimental result and analysis:
The biologically active polypeptide NEINQFYQKFPQ of table 2 promotees the measure of the macrophage nitric oxide amount of inducing
Note:*, compared with negative control, there is significant difference (P < 0.05);
*, compared with negative control group, there is significant difference (P < 0.01)
Experimental result is shown in Table 2, as shown in Table 2, biologically active polypeptide NEINQFYQKFPQ, concentration point is added in experimental group Not Wei 1mg/mL and 0.5mg/mL, make with LPS the promotion macrophage grown under inflammatory conditions for growing under normal circumstances The nitric oxide amount of inducing has facilitation.Compared with cell blank group, there is significant difference (P<0.05).Work as bioactivity Polypeptide NEINQFYQKFPQ addition concentration is 0.1mg/mL, is compared in the case where LPS makes inflammatory conditions, can also promote macrophage one The increase of the nitrogen oxide amount of inducing, and there is significant difference (P<0.05).But the cell blank group with growing under normal circumstances Compare, without significant difference.Illustrate that biologically active polypeptide NEINQFYQKFPQ has under the conditions of finite concentration and promote macrophage The increased ability of the cell nitric oxide amount of inducing.
The activity of fighting against senium experiment of the biologically active peptide of embodiment 3
First, biologically active polypeptide NEINQFYQKFPQ improves the experiment of drosophila survival ability
1. experiment reagent and instrument:
Reagent:Oregon K wild type Drosophila melanogasters, agricultural college of Shanghai Communications University genetics experiments room;Agar powder, state Chemical reagent Co., Ltd of medicine group;The milk-derived biologically active polypeptide NEINQFYQKFPQ that embodiment 1 obtains.
Instrument and equipment:The ultra-clean water of CM-230 types mole, Shanghai Moller scientific instrument Co., Ltd;G136T type Zealway intelligence Energy high-temperature sterilization pot, Xiamen Zhi Wei instruments Science and Technology Ltd.;BJ-CD SERIES bio-incubators, Shanghai is rich to prove to be true after interrogation industry public affairs Department;GRX-9073 type hot air sterilizers, one permanent Science and Technology Ltd. of Shanghai.
2. experimental method:
Using drosophila as experimental model:The drosophila adult newly to sprout wings in 8 hours is collected, male and female random transferring is divided after anesthesia to respectively In experimental group, every group of each sex 100, every group of setting 3 is parallel, and control group gives conventional corn powder culture medium, experimental group NEINQFYQKFPQ biologically active peptides-corn culture medium respectively containing 0.05mg/ml, 0.5mg/ml, 1mg/ml.Every 2 days Change fresh culture once, observe daily and record the death toll of different sexes drosophila, untill drosophila is all dead.Paint Drosophila survival curve processed, and calculate the average life span of different sexes drosophila and maximum life span (takes 5 drosophilas of last death to enter Row statistics).
3. experimental result and analysis:
This experiment is as follows to the result of study of the life span of drosophila melanogaster of feeding various concentrations biologically active peptide:Can be with from Fig. 4 (A) It was found that for blank control group Male Drosophila, feeding concentration is that 0.05mg/ml NEINQFYQKFPQ is not notable Change the survival rate of Male Drosophila, and when peptide concentration reaches 0.5mg/ml and 1mg/ml, same time point, Male Drosophila is deposited Motility rate is significantly improved.From Fig. 4 (B), relative to blank control group female Drosophila, feeding concentration is 0.5mg/ml and 1mg/ During ml, in same time point, the survival rate of female Drosophila increases, but result difference unobvious.
Influence situations of the table 3-1 NEINQFYQKFPQ to the Male Drosophila life-span
Note:* sign has significant difference (P compared with blank control group<0.05);Similarly hereinafter.
Influence situations of the table 3-2 NEINQFYQKFPQ to the female Drosophila life-span
It was found from from table 3-1, relative to blank control group, low dose group Male Drosophila average life span does not have significant change, But middle dose group and advanced amount group Male Drosophila average life span are improved, respectively 15.93% and 9.69%, but only middle dosage Group generates significant difference (p<0.05), illustrate that the average life span conspicuousness of middle dose group Male Drosophila improves.Meanwhile middle dose The half death time of amount group and high dose group drosophila is improved, but does not have notable difference in terms of MaLS.By table 3-2 understands that female Drosophila low dose group, middle dose group and high dose group increase in terms of average life span, but do not produce Raw significant difference.But the MaLS of middle dose group and high dose group increases, extend 7 days respectively compared with blank control group With 6 days, and generate significant difference (P<0.05).
This experimental result illustrates that biologically active polypeptide NEINQFYQKFPQ can improve being averaged for drosophila under finite concentration Life-span and MaLS, but it is relevant with concentration and sex.This phenomenon related to tested material concentration, strain be probably because NEINQFYQKFPQ participates in the part biological metabolism of drosophila, or the antioxidant system organized by improving drosophila is prolonged to reach The effect of long life span of drosophila melanogaster.Because the metabolism of different lines drosophila can have any different, so as to cause the difference of result.And the difference of sex It is different, it may be possible to because female Drosophila inherently has certain conservative and the resistance to external environment, so NEINQFYQKFPQ is to female Drosophila life and unobvious.
2nd, biologically active polypeptide NEINQFYQKFPQ improves the experiment of drosophila fertility
1. experiment reagent and instrument:
Reagent:Oregon K wild type Drosophila melanogasters, agricultural college of Shanghai Communications University genetics experiments room;Agar powder, state Chemical reagent Co., Ltd of medicine group;The milk-derived biologically active polypeptide NEINQFYQKFPQ that embodiment 1 obtains.
Instrument and equipment:The ultra-clean water of CM-230 types mole, Shanghai Moller scientific instrument Co., Ltd;G136T type Zealway intelligence Energy high-temperature sterilization pot, Xiamen Zhi Wei instruments Science and Technology Ltd.;BJ-CD SERIES bio-incubators, Shanghai is rich to prove to be true after interrogation industry public affairs Department;GRX-9073 type hot air sterilizers, one permanent Science and Technology Ltd. of Shanghai.
2. experimental method:
The drosophila adult newly to sprout wings in 8 hours is collected, its male and female is separately fed, concentration is separately added into culture medium is 0mg/ml, 0.05mg/ml, 0.5mg/ml, 1mg/ml NEINQFYQKFPQ solution, continuous culture 12 days.Collect phase within 13rd day With the adult drosophila cultivated under concentration and it is transferred in new Nostoc commune Vanch bottle, each blake bottle ensures 1 female and 2 males (every group 5 bottles), give accurate 24 hours for every bottle and laid eggs.Parent drosophila is transferred to new Nostoc commune Vanch bottle after spawning In, old blake bottle continues breeding culture, counts progeny size, METHOD FOR CONTINUOUS DETERMINATION 7 days after larva sprouts wings, and be repeated 3 times.
3. experimental result and analysis:
The reproductive capacity measurement result of table 4
From table 4, it can be seen that low concentration experimental group reproductive capacity does not produce conspicuousness change, but middle dosage compared with control group Experimental group and the reproductive capacity of high dose experimental group drosophila are significantly increased (P compared with blank control group<0.05).Illustrate certain dense The NEINQFYQKFPQ of degree can promote the reproductive capacity of drosophila.Originally test result indicates that, the extension of life span of drosophila melanogaster is The result that NEINQFYQKFPQ is directly acted on, rather than NEINQFYQKFPQ are imitated by reducing two level physiology caused by reproductive capacity Should.Also illustrate that NEINQFYQKFPQ is safe to drosophila simultaneously, without toxic hazard.
3rd, the experiment that biologically active polypeptide NEINQFYQKFPQ influences on drosophila SOD and MAD content
1. experiment reagent and instrument:
Reagent:Oregon K wild type Drosophila melanogasters, agricultural college of Shanghai Communications University genetics experiments room;Agar powder, state Chemical reagent Co., Ltd of medicine group;MDA MDA kits, Science and Technology Ltd. of Nanjing Keygen Biotech;SOD super oxygens Compound is disproportionated enzyme reagent kit, and bio tech ltd is built up in Nanjing;The milk-derived biologically active polypeptide that embodiment 1 obtains NEINQFYQKFPQ。
Instrument and equipment:The ultra-clean water of CM-230 types mole, Shanghai Moller scientific instrument Co., Ltd;Organize homogenizer, Shanghai Member is as bio tech ltd;G136T type Zealway intelligence high-temperature sterilization pots, Xiamen Zhi Wei instruments Science and Technology Ltd.; BJ-CD SERIES bio-incubators, Shanghai Bo Xun industrial corporations;GRX-9073 type hot air sterilizers, one permanent science and technology of Shanghai have Limit company;Infinite type ELIASAs, Austrian Di Ken Co., Ltds.
2. experimental method:
The drosophila adult newly to sprout wings in 8 hours is collected, male and female random transferring is divided after anesthesia into each experimental group, every group each Sex 100, every group of setting 3 is parallel, and control group gives conventional corn powder culture medium, and experimental group is respectively to contain 0.05mg/ Ml, 0.5mg/ml, 1mg/ml NEINQFYQKFPQ biologically active peptides-corn culture medium.Change fresh culture one within every 2 days Secondary, after raising 30 days, every group weighs drosophila 40mg, adds 0.5ml physiological saline, grinds and is homogenized in ice bath, the interval 10s seconds, instead Carry out 3 times again, homogenate is made, every group of drosophila SOD activity and MDA levels are determined according to kit explanation.Detected using MDA The levels of lipid peroxidation product MDA in kit detection drosophila body, the wavelength of spectrophotometer is 532nm.
3. experimental result and analysis:
Influences of the NEINQFYQKFPQ of table 5 to drosophila SOD, MDA
As can be known from Table 5, relative to blank control group, the SOD contents in the female male drosophila body of polypeptide treatment group are improved, And for Male Drosophila group, when peptide concentration reaches 1mg/ml, there is significant difference in the SOD contents in drosophila body, and Then there is significant difference when peptide concentration is 0.5mg/ml and 1mg/ml in female Drosophila group.Illustrate by taking in certain polypeptide, Internal SOD contents can be improved, and help body protective itself to prevent oxidative damage.MDA contents can see from table 5, MDA contents in experimental group Male Drosophila and female Drosophila body have reduction.Relative to male blank control group MDA contents 1.37 ± 0.21 μm of ol/L, there is the reduction of conspicuousness for the MDA contents of 0.5mg/ml and 1mg/ml drosophila groups in concentration, and female Drosophila In group, when 1mg/ml peptides are handled, there is the reduction of conspicuousness in the MDA contents in drosophila body.Because MDA is body lipid peroxide Change and generate, the reduction of its content illustrates that the Antioxidant Enzymes vigor of drosophila is improved indirectly, so as to protect body Histoorgan will not produce a large amount of MDAs.
From experimental result as can be seen that SOD and MDA experimental result is mutually proved, it may be said that gelatine/biological activity polypeptide NEINQFYQKFPQ is favorably improved the vigor of the Antioxidant Enzymes in body body, so as to effectively improve the anti-oxidant energy of body Power, reduce body is stimulated by the bad factor, so as to reduce organism aging process, aging and sick probability, all in all, for male The effect of drosophila is better than female Drosophila.
Find out from above example, biologically active polypeptide NEINQFYQKFPQ has anti-inflammatory properties and anti-senescence function.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention. Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability Field technique personnel do not depart from improvement that scope made and modification all should be the present invention's according to the announcement of the present invention Within protection domain.
Sequence table
<110>Shanghai Communications University;Zhejiang Hui Tai life and healths Science and Technology Ltd.
<120>A kind of biologically active polypeptide NEINQFYQKFPQ 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
Asn Glu Ile Asn Gln Phe Tyr Gln Lys Phe Pro Gln
1 5 10
<210> 2
<211> 36
<212> DNA
<213>Artificial sequence (Artificial Sequence)
<400> 2
aatgaaatca atcagtttta tcagaagttc ccccag 36
<210> 3
<211> 222
<212> PRT
<213>Artificial sequence (Artificial Sequence)
<400> 3
Met Lys Phe Phe Ile Phe Thr Cys Leu Leu Ala Val Ala Leu Ala Lys
1 5 10 15
Asn Thr Met Glu His Val Ser Ser Ser Glu Glu Ser Ile Ile Ser Gln
20 25 30
Glu Thr Tyr Lys Gln Glu Lys Asn Met Ala Ile Asn Pro Ser Lys Glu
35 40 45
Asn Leu Cys Ser Thr Phe Cys Lys Glu Val Val Arg Asn Ala Asn Glu
50 55 60
Glu Glu Tyr Ser Ile Gly Ser Ser Ser Glu Glu Ser Ala Glu Val Ala
65 70 75 80
Thr Glu Glu Val Lys Ile Thr Val Asp Asp Lys His Tyr Gln Lys Ala
85 90 95
Leu Asn Glu Ile Asn Gln Phe Tyr Gln Lys Phe Pro Gln Tyr Leu Gln
100 105 110
Tyr Leu Tyr Gln Gly Pro Ile Val Leu Asn Pro Trp Asp Gln Val Lys
115 120 125
Arg Asn Ala Val Pro Ile Thr Pro Thr Leu Asn Arg Glu Gln Leu Ser
130 135 140
Thr Ser Glu Glu Asn Ser Lys Lys Thr Val Asp Met Glu Ser Thr Glu
145 150 155 160
Val Phe Thr Lys Lys Thr Lys Leu Thr Glu Glu Glu Lys Asn Arg Leu
165 170 175
Asn Phe Leu Lys Lys Ile Ser Gln Arg Tyr Gln Lys Phe Ala Leu Pro
180 185 190
Gln Tyr Leu Lys Thr Val Tyr Gln His Gln Lys Ala Met Lys Pro Trp
195 200 205
Ile Gln Pro Lys Thr Lys Val Ile Pro Tyr Val Arg Tyr Leu
210 215 220

Claims (10)

1. a kind of biologically active polypeptide NEINQFYQKFPQ, it is characterised in that its amino acid sequence is Asn-Glu-Ile-Asn- Gln-Phe-Tyr-Gln-Lys-Phe-Pro-Gln。
A kind of 2. biologically active polypeptide NEINQFYQKFPQ according to claim 1, it is characterised in that the bioactivity Polypeptide is milk-derived.
3. encode the nucleotide fragments of biologically active polypeptide NEINQFYQKFPQ described in claim 1, it is characterised in that the core The sequence of acid fragments such as SEQ ID NO:Shown in 2.
4. biologically active polypeptide NEINQFYQKFPQ as claimed in claim 1 preparation method, it is characterised in that pass through gene work The method of journey is artificial synthesized, or is directly obtained from dairy products by the method isolated and purified, or directly by chemical synthesis system It is standby.
5. biologically active polypeptide NEINQFYQKFPQ as claimed in claim 1 application, it is characterised in that the bioactivity is more Applications of the peptide NEINQFYQKFPQ in the food with anti-inflammatory properties, health products, medicine or cosmetics are prepared.
6. biologically active polypeptide NEINQFYQKFPQ as claimed in claim 1 application, it is characterised in that the bioactivity is more Applications of the peptide NEINQFYQKFPQ in the food with anti-senescence function, health products or medicine is prepared.
7. biologically active polypeptide NEINQFYQKFPQ as claimed in claim 1 application, it is characterised in that the bioactivity is more Applications of the peptide NEINQFYQKFPQ in the food with anti-inflammatory properties and anti-senescence function, health products or medicine is prepared.
8. a kind of anti-inflammatory products, it is characterised in that including biologically active polypeptide NEINQFYQKFPQ as claimed in claim 1 or institute State biologically active polypeptide NEINQFYQKFPQ derivative;Described anti-inflammatory products include anti-inflammatory food, anti-inflammatory health product, anti-inflammatory Medicine or anti-inflammatory cosmetics;The derivative of the biologically active polypeptide NEINQFYQKFPQ, refers in biologically active polypeptide On NEINQFYQKFPQ amino acid side groups, aminoterminal or c-terminus carry out hydroxylating, carboxylated, be carbonylated, methylate, Acetylation, phosphorylation, esterification or glycosylation modified, obtained polypeptide derivative.
A kind of 9. anti-aging product, it is characterised in that including biologically active polypeptide NEINQFYQKFPQ as claimed in claim 1 or The derivative of the biologically active polypeptide NEINQFYQKFPQ;Described anti-aging product includes antisenility cistanche food, anti-aging is protected Strong product or antiaging agent;The derivative of the biologically active polypeptide NEINQFYQKFPQ, refers in biologically active polypeptide On NEINQFYQKFPQ amino acid side groups, aminoterminal or c-terminus carry out hydroxylating, carboxylated, be carbonylated, methylate, Acetylation, phosphorylation, esterification or glycosylation modified, obtained polypeptide derivative.
10. a kind of product with anti-inflammatory properties and anti-senescence function, it is characterised in that including biology as claimed in claim 1 Active peptides NEINQFYQKFPQ or described biologically active polypeptides NEINQFYQKFPQ derivative;With anti-inflammatory properties and anti-ageing The product of old function includes food, health products or medicine;The derivative of the biologically active polypeptide NEINQFYQKFPQ, refers to On biologically active polypeptide NEINQFYQKFPQ amino acid side groups, aminoterminal or c-terminus carry out hydroxylating, carboxylated, carbonyl Base, methylate, acetylation, phosphorylation, esterification or glycosylation modified, obtained polypeptide derivative.
CN201711124019.7A 2017-11-14 2017-11-14 A kind of biologically active polypeptide NEINQFYQKFPQ and its preparation method and application Pending CN107840879A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105254740A (en) * 2015-10-16 2016-01-20 上海交通大学 Bioactive polypeptide NQFYQKF as well as preparation and application thereof
CN107011429A (en) * 2017-05-24 2017-08-04 浙江辉肽生命健康科技有限公司 A kind of biologically active peptide Gly Leu Pro Asn and its preparation and application

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105254740A (en) * 2015-10-16 2016-01-20 上海交通大学 Bioactive polypeptide NQFYQKF as well as preparation and application thereof
CN107011429A (en) * 2017-05-24 2017-08-04 浙江辉肽生命健康科技有限公司 A kind of biologically active peptide Gly Leu Pro Asn and its preparation and application

Non-Patent Citations (3)

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Y. JIN 等: ""Peptide profiling and the bioactivity character of yogurt in the simulated gastrointestinal digestion."", 《JOURNAL OF PROTEOMICS》 *
高扬 等: ""乳源性小肽QEPV的抗衰老功能研究"", 《中国乳品工业》 *
龚娅莉: ""保加利亚乳杆菌水解酪蛋白条件及产物研究"", 《中国优秀硕士学位论文全文数据库(电子期刊)》 *

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Application publication date: 20180327