CN102212104A - Method for separating polypeptide through hydrogen binding adsorption chromatography of quercitin aglucon and agarose - Google Patents
Method for separating polypeptide through hydrogen binding adsorption chromatography of quercitin aglucon and agarose Download PDFInfo
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- CN102212104A CN102212104A CN2010101449039A CN201010144903A CN102212104A CN 102212104 A CN102212104 A CN 102212104A CN 2010101449039 A CN2010101449039 A CN 2010101449039A CN 201010144903 A CN201010144903 A CN 201010144903A CN 102212104 A CN102212104 A CN 102212104A
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Abstract
The invention relates to a method for separating and purifying polypeptide through a hydrogen binding adsorption chromatographic medium of quercitin aglucon and high-concentration and high-crosslinking degree agarose gel. The quercitin aglucon and the high-concentration and high-crosslinking degree agarose gel serve as a medium of a matrix; and the high-purity polypeptide is further separated and purified from a biological tissue extract, a protein hydrolysate or a polypeptide synthesis mixture based on the principle of the hydrogen binding adsorption chromatography characterized by hydrogen binding mutual effect. The method has the characteristics of high selectivity, simple purification process, large sample carrying amount, high medium recycling degree and the like. The defects that the traditional method has complex steps, low reversed-phase chromatographic medium recycling degree, difficult mass production, low sample carrying amount, poor biocompatibility and the like are overcome. The purity of the obtained polypeptide fractions is determined through reversed-phase high efficiency liquid chromatography, and the sequence and the molecular weight of the polypeptide are determined through a mass spectrum.
Description
Technical field
The present invention relates to a peptide species separation purification method, the concrete method that relates to a kind of Quercetin aglucon, high density, high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic separation and purification polypeptide.
Background technology
Nature exists the huge miscellaneous biologically active polypeptides of quantity, in various vital movements, play very important regulating effect, relate to various toxin, hormone, antibacterial peptide, pheromone, cytokine etc., processes such as wide participation molecular recognition, signal transduction, enzyme adjusting alive, immunomodulatory, cytodifferentiation and ontogeny regulation and control.The development and utilization of biologically active polypeptides more and more has been subjected to the attention of industries such as medicine, food, makeup, pharmaceutical industries particularly, there has been the large number of biological active polypeptide to pass through clinical trial as hormone, microbiotic, vaccine, diagnostic reagent, enzyme inhibitors, antitumor drug etc., put on market, as pitocin, thyrocalcitonin, angiotonin, endorphin or the like.
China is vast in territory, and animal and plant resource is extremely abundant, has a large amount of biologically active polypeptidess leaved for development, and only the marine bioactivity polypeptide just has tens thousand of kinds more than.The exploitation polypeptide drug has its peculiar advantage: 1) polypeptide molecular weight is little, and is simple in structure, is easy to chemosynthesis or biosynthesizing, helps mass-producing, commercialization; 2) function is special, and synthetic purity height does not produce pyrogen, and is safe in utilization; 3) be easy to be absorbed route of administration variation (as oral, spraying, Transdermal absorption etc.) by body.The research of polypeptide drug has become the focus of present pharmaceutical industries.
Biologically active polypeptides is as medicine, and compares as foodstuff additive or cosmetics additive, requires to have higher purity, and impurity component not only can reduce drug effect, also may produce toxic side effect.Usually said biologically active polypeptides generally is divided into two kinds: a kind of is natural biological polypeptide, and promptly naturally occurring drawing together property polypeptide in the biological tissue comprises microbiotic, hormone, toxin etc.; Another kind is the enzymolysis activity polypeptide, promptly by the hydrolytic action of specific protease, and the active peptide segment that from high molecular weight protein, discharges.No matter be any active polypeptide, it is being carried out toxicity, pharmacological research, before the perhaps accurate structure elucidation, all need at first its separation and purification from extremely complicated tissue extract of composition or proteolysate is come out.After 26S Proteasome Structure and Function research is clear; can accomplish scale production by biosynthesizing or chemosynthesis; to meet clinical needs; at this moment need high yield equally and can keep the bioactive separation purification method of polypeptide; separation and purification target polypeptides from synthetic mixture finally forms product.
The production technique of biologically active polypeptides can be divided into roughing out and purifying two portions.
The roughing out method of polypeptide mainly comprises liquid-liquid extraction, saltouts, organic solvent deposit, ultrafiltration etc., has obtained after the crude extract, is further purified again.
The method that the purifying of polypeptide adopts several chromatographic techniques to combine mostly, comprise gel filtration chromatography, ion-exchange chromatography, capillary zone electrophoresis, affinity chromatography, hydrophobic interaction chromatograph, RPLC and adverse current chromatogram etc., every kind of method all has its benefit and limitation.Usually the roughing out sample of polypeptide is through smart separation the in 1～2 step, as ion-exchange chromatography, gel filtration chromatography or capillary electrophoresis, again through 1～3 different surfaces group (C
18, C
8, C
4Deng) RPLC, just can access good purifying.Polypeptide for those structural instabilities, easy inactivation will reduce separating step as far as possible, thereby realizes that higher activity reclaims.
Gel filtration chromatography (gel filtration chromatography), be also referred to as molecular-exclusion chromatography (size exclusionchromatography, SEC), according to the molecular weight of peptide molecule and the difference of shape, utilize the difference of its rate of diffusion in the porous gel medium to separate.Select suitable particle diameter, porosity and inflexible medium, can both realize good resolving power to polypeptide monomer and state of aggregation, linear peptides and cyclic peptide and at the polypeptide that degree of modification has a fine difference.But, adopt the method for gel-filtration to be difficult to it is separated merely for the close even identical polypeptide of molecular weight.
(ion exchange chromatography, IEC) difference according to the peptide molecule electriferous state realizes separating ion-exchange chromatography.The Ion Exchange Medium kind is more, macroporous resin, all hole resin, ion-exchange cellulose, dextrane gel, sepharose can be as base mateiral, surface bond different yin, yang ions, selectable scope is wide.IEC needs at the high salt concentration wash-out, and the polypeptide that the polymerization inactivation easily takes place then should not adopt this method.
RPLC (reversed phase high-performance liquid chromatography, RP-HPLC) be the highest peptide purification method of present resolving power, can accurately differentiate the difference of an amino-acid residue, through being often used as final purity verification step.Although commercial preparation scale RP-HPLC chromatographic column has been arranged, the RP-HPLC technology is applied to the large-scale production biologically active polypeptides, still inconvenient.The first, RP-HPLC sample carrying capacity is lower, and is difficult for amplifying; The second, the repeated use number of times of medium is limited, to having relatively high expectations of sample; The 3rd, silica matrix is in conjunction with the separating medium of C chain group, and as the production of clinical application, its biocompatibility and biological safety do not have the medium height of dextran, agar carbohydrate.
All can not realize a step in view of above polypeptide separation method commonly used separates; complex operation step; and the sample carrying capacity of RP-HPLC, repeated use number of times and biological safety have also limited its large-scale production, and needs are developed efficient more high yield and are easy to the polypeptide separation method of mass-producing.Also adsorption chromatography is not applied to the isolating report of polypeptide at present.
Here said adsorption chromatography (adsorption chromatography) is meant generalized absorption, not only comprises the physical action of the no chemical bond introducing of common indication, also comprises hydrophobic interaction and hydrogen bond action etc.Utilize medium that the difference of extract adsorption strength is realized separating.The medium scope that relates to is very extensive, comprising: silica gel, bonding phase silica gel, agarose, dextran, aluminum oxide, macroporous adsorbent resin, polymeric amide, activated carbon, hydroxyapatite etc.
Adsorption by hydrogen bond chromatogram medium commonly used is a polymeric amide.There are some researches show again, the dextran of some high densitys, high-crosslinking-degree, agarose medium are to small-molecule substance, the compound that particularly contains aromatic ring also has adsorption, previously this adsorption is summed up as hydrophobic interaction, but recent studies show that, under some moving phase condition, except hydrophobic interaction, main still hydrogen bond action also can be used as the adsorption by hydrogen bond chromatographic media and uses.The peptide bond that polypeptide contained itself just can and medium between form hydrogen bond, also contain alcoholic extract hydroxyl group, phenolic hydroxyl group, sulfydryl, amino etc. in the amino acid side chain that has, also can form hydrogen bond.Therefore, the adsorption by hydrogen bond chromatogram is very promising at the polypeptide separation field.
Summary of the invention
Purpose of the present invention is to simplify the polypeptide separation steps exactly, overcomes traditional method step complexity, and reverse phase chromatographic medium recycling degree is low, be difficult to mass-producing, shortcoming such as the sample carrying capacity is low, biocompatibility difference.Employing improves selectivity based on the adsorption by hydrogen bond chromatogram purification polypeptide of interaction of hydrogen bond, simplifies technology, improves product recovery rate, stability and biological safety, improves sample carrying capacity and medium recycling degree.Present method is applicable to polypeptide of from biological tissue extracted thing, proteolysate or polypeptide biosynthesizing mixture, chemiluminescent polypeptide synthetic mixture separation and purification natural polypeptides and active homologue, variant, fragment and manually modified mistake etc.
The objective of the invention is to be achieved through the following technical solutions.
The invention provides the method for a kind of Quercetin aglucon, high density, high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic separation and purification polypeptide, concrete steps are as follows:
1) preparation biological tissue crude extract, proteolysate or polypeptide synthetic mixture;
2) select sepharose adsorption by hydrogen bond chromatographic media:, be the separating medium of matrix with the high-crosslinking-degree sepharose of 10-30 μ m particle diameter, 12% concentration with the Quercetin aglucon;
3) select moving phase: water, alcohol-water, ethanol-acetate-water, ethanol-trifluoroacetic acid-water, methanol-water, methyl alcohol-acetate-water, methyl alcohol-trifluoroacetic acid-water, acetonitrile-water, acetonitrile-acetate-water, acetonitrile-trifluoroacetic acid-systems such as water adopts the different solvents proportioning;
4) select type of elution: can adopt isocratic elution, the isocratic elution isolated polypeptide miscellany of linear gradient elution or substep;
5) step 2 is selected medium carries out suitable pre-treatment: Ago-Gel medium is preserved in the liquid at 20% ethanol and is adorned post, equilibrates to initial flow and can use mutually;
6) moving phase ultrasonic degas or the vacuum outgas 10-30min that step 3) is selected and prepared, room temperature leaves standstill 0.5-1h;
7) two column volumes of moving phase balance hydrogen bond adsorption chromatography post that use step 6) to prepare, the type of elution of employing step 4), linear rate of flow 20～100cm/h, UV-detector 210-280nm or employing differential detector on-line monitoring are collected cut automatically;
8) the cut lyophilize that step 7) is collected, detect purity: adopt RPLC C18 post, with methanol-water, methyl alcohol-acetate-water, methyl alcohol-trifluoroacetic acid-water or acetonitrile-water, acetonitrile-acetate-water, acetonitrile-trifluoroacetic acid-water is moving phase, adopt linear gradient elution, with B phased soln sample, UV-detector 280nm on-line monitoring calculates polypeptide purity and yield;
9) cut of purity more than 95% of step 8) acquisition, mass spectrometric detection is determined molecular weight and aminoacid sequence, and utilizes database to compare;
10) have special bioactive polypeptide and before and after separating, measure its activity, calculate the polypeptide active rate of recovery.
The invention provides a kind of method of using Quercetin aglucon, high density, high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic separation and purification polypeptide, first this method is applied to the separation and purification of polypeptide in biological tissue extracted thing, proteolysate or the polypeptide synthetic mixture, be to existing polypeptide, especially the useful of hydrogen bond polypeptide separation purification method replenished, advantage compared with prior art is: a step is separated the polypeptide that can obtain higher degree, rate of recovery height; Do not need high salt concentration solution to carry out wash-out, the possibility that polypeptide produces the polymerization sex change is little, need not dialyse and avoid expending a large amount of damping fluids; Medium is strong to the crude samples tolerance, and sample carrying capacity height, medium can reuse tens of times, and the scale that is easy to is amplified, and particularly the biological safety of agarose medium is very good.
Description of drawings
The high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media of Fig. 1 Quercetin aglucon 12% concentration separates three kinds of glycine oligo peptides
The high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media separation and purification solid phase synthesis thymopeptide-5 mixture of Fig. 2 Quercetin aglucon 12% concentration
Embodiment
The high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media of embodiment 1, use Quercetin aglucon 12% concentration separates three kinds of glycine oligo peptides
1) preparation glycine oligo peptide: take by weighing standard substance 0.6mgGly-Gly, 1.2mgGly-Gly-Gly and 0.4mgGly-Gly-Gly-Gly-Gly, be dissolved in after the mixing in the 5mL moving phase, ultrasonic hydrotropy, 0.45 μ m membrane filtration;
2) preparation moving phase: preparation acetonitrile-water (10: 90) solution, ultrasonic degas 30 minutes left standstill 1 hour;
3) the high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media of Quercetin aglucon 12% concentration is preserved wet method dress post in the liquid at 20% ethanol, chromatography column internal diameter 10mm, column volume 24mL, dielectric withstanding voltage 2.5MPa, initial flow 2 column volumes of chromatography column that balance each other;
4) the glycine oligopeptides biased sample for preparing by automatic sampling valve injection 500 μ L;
5) isocratic elution, linear rate of flow 30cm/h, elution peak is collected in UV-detector 210nm monitoring;
6) spectrogram of the high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media chromatography column separation of glycine oligo peptide gained of Quercetin aglucon 12% concentration as shown in Figure 1,1,2, No. 3 elution peak of Shou Jiing respectively, freeze-drying, again dissolving, the C18 post detects, judge that according to retention time 1,2, No. 3 elution peak is respectively Gly-Gly, Gly-Gly-Gly and Gly-Gly-Gly-Gly-Gly, each cut purity＞95%, the rate of recovery＞85%.
The synthetic thymopeptide-5 mixture of high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media separation and purification liquid phase of embodiment 2, use Quercetin aglucon 12% concentration
1) the synthetic thymopeptide-5 mixture of liquid phase;
2) preparation moving phase: preparation acetonitrile-water (30: 70) solution, ultrasonic degas 30 minutes left standstill 1 hour;
3) the high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media Ago-Gel medium wet method of Quercetin aglucon 12% concentration dress post, chromatography column internal diameter 10mm, column volume 24ml, withstand voltage 2.5MPa, chromatography column is with initial flow 2 column volumes that balance each other;
4) the synthetic thymopeptide-5 blend sample of liquid phase is by automatic sampling valve injection 1ml;
5) isocratic elution, general linear rate of flow are at 40cm/h, and elution peak is collected in UV-detector 280nm monitoring;
6) the high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic media parting liquid of Quercetin aglucon 12% concentration be combined to the thymopeptide-5 mixture spectrogram as shown in Figure 2, the cut freeze-drying, dissolving again detects thymopeptide-5 purity 95% through RP-HPLC (C18 post).
Claims (2)
1. the method for a Quercetin genin and agarose adsorption by hydrogen bond chromatographic separation polypeptide, the different interaction of hydrogen bond of intensity that produces between the Ago-Gel medium that utilizes Quercetin aglucon, high density, high-crosslinking-degree and the target polypeptides, separation and purification polypeptide from biological tissue extracted thing, proteolysate or polypeptide synthetic mixture.
2. the method for a kind of Quercetin aglucon as claimed in claim 1, high density, high-crosslinking-degree sepharose adsorption by hydrogen bond chromatographic separation and purification polypeptide comprises following step:
1) preparation biological tissue crude extract, proteolysate or polypeptide synthetic mixture;
2) select sepharose adsorption by hydrogen bond chromatographic media:, be the separating medium of matrix with the high-crosslinking-degree sepharose of 10-30 μ m particle diameter, 12% concentration with the Quercetin aglucon;
3) select moving phase: water, alcohol-water, ethanol-acetate-water, ethanol-trifluoroacetic acid-water, methanol-water, methyl alcohol-acetate-water, methyl alcohol-trifluoroacetic acid-water, acetonitrile-water, acetonitrile-acetate-water, acetonitrile-trifluoroacetic acid-systems such as water adopts the different solvents proportioning;
4) select type of elution: can adopt isocratic elution, the isocratic elution isolated polypeptide miscellany of linear gradient elution or substep;
5) step 2 is selected medium carries out suitable pre-treatment: Ago-Gel medium is preserved in the liquid at 20% ethanol and is adorned post, equilibrates to initial flow and can use mutually;
6) moving phase ultrasonic degas or the vacuum outgas 10-30min that step 3) is selected and prepared, room temperature leaves standstill 0.5-1h;
7) two column volumes of moving phase balance hydrogen bond adsorption chromatography post that use step 6) to prepare, the type of elution of employing step 4), linear rate of flow 20～100cm/h, UV-detector 210-280nm or employing differential detector on-line monitoring are collected cut automatically;
8) the cut lyophilize that step 7) is collected, detect purity: adopt RPLC C18 post, with methanol-water, methyl alcohol-acetate-water, methyl alcohol-trifluoroacetic acid-water or acetonitrile-water, acetonitrile-acetate-water, acetonitrile-trifluoroacetic acid-water is moving phase, adopt linear gradient elution, with B phased soln sample, UV-detector 280nm on-line monitoring calculates polypeptide purity and yield;
9) cut of purity more than 95% of step 8) acquisition, mass spectrometric detection is determined molecular weight and aminoacid sequence, and utilizes database to compare;
10) have special bioactive polypeptide and before and after separating, measure its activity, calculate the polypeptide active rate of recovery.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111362897A (en) * | 2018-12-25 | 2020-07-03 | 泰州医药城国科化物生物医药科技有限公司 | Method for adsorbing quercetin by adopting anion ion exchange agarose filler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362897A (en) * | 2018-12-25 | 2020-07-03 | 泰州医药城国科化物生物医药科技有限公司 | Method for adsorbing quercetin by adopting anion ion exchange agarose filler |
| CN111362897B (en) * | 2018-12-25 | 2023-03-28 | 泰州医药城国科化物生物医药科技有限公司 | Method for adsorbing quercetin by adopting anion ion exchange agarose filler |
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Application publication date: 20111012 |