EP1718755A1 - Verfahren zur herstellung von hyperverzweigten polysaccharid-fraktionen - Google Patents
Verfahren zur herstellung von hyperverzweigten polysaccharid-fraktionenInfo
- Publication number
- EP1718755A1 EP1718755A1 EP05707646A EP05707646A EP1718755A1 EP 1718755 A1 EP1718755 A1 EP 1718755A1 EP 05707646 A EP05707646 A EP 05707646A EP 05707646 A EP05707646 A EP 05707646A EP 1718755 A1 EP1718755 A1 EP 1718755A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrolysis
- molecular weight
- hydrolysis step
- daltons
- amylopectin
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 150000004676 glycans Chemical class 0.000 title description 7
- 229920001282 polysaccharide Polymers 0.000 title description 7
- 239000005017 polysaccharide Substances 0.000 title description 7
- 229920000945 Amylopectin Polymers 0.000 claims abstract description 47
- 230000007062 hydrolysis Effects 0.000 claims abstract description 40
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 40
- 229920002472 Starch Polymers 0.000 claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 235000019698 starch Nutrition 0.000 claims abstract description 17
- 239000008107 starch Substances 0.000 claims abstract description 12
- 238000005903 acid hydrolysis reaction Methods 0.000 claims abstract description 8
- 108010019077 beta-Amylase Proteins 0.000 claims abstract description 8
- TWNIBLMWSKIRAT-VFUOTHLCSA-N levoglucosan Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@H]2CO[C@@H]1O2 TWNIBLMWSKIRAT-VFUOTHLCSA-N 0.000 claims abstract description 8
- 230000015556 catabolic process Effects 0.000 claims description 23
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 12
- 108090000637 alpha-Amylases Proteins 0.000 claims description 12
- 102000004139 alpha-Amylases Human genes 0.000 claims description 11
- 229940024171 alpha-amylase Drugs 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 7
- 239000004480 active ingredient Substances 0.000 claims description 6
- 102000004169 proteins and genes Human genes 0.000 claims description 5
- 108090000623 proteins and genes Proteins 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 235000013311 vegetables Nutrition 0.000 claims description 4
- 125000004185 ester group Chemical group 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229920001184 polypeptide Polymers 0.000 claims description 2
- 102000004196 processed proteins & peptides Human genes 0.000 claims description 2
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 2
- 150000004651 carbonic acid esters Chemical group 0.000 claims 1
- 239000004382 Amylase Substances 0.000 abstract 1
- 239000008177 pharmaceutical agent Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 20
- 238000006731 degradation reaction Methods 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- 102000004190 Enzymes Human genes 0.000 description 9
- 108090000790 Enzymes Proteins 0.000 description 9
- 229940088598 enzyme Drugs 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000012512 characterization method Methods 0.000 description 6
- 238000004192 high performance gel permeation chromatography Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 229920002261 Corn starch Polymers 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000004108 freeze drying Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 4
- 101100263837 Bovine ephemeral fever virus (strain BB7721) beta gene Proteins 0.000 description 4
- 229920001353 Dextrin Polymers 0.000 description 4
- 239000004375 Dextrin Substances 0.000 description 4
- 229920000881 Modified starch Polymers 0.000 description 4
- 229940098773 bovine serum albumin Drugs 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 235000019425 dextrin Nutrition 0.000 description 4
- 235000019426 modified starch Nutrition 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 210000002966 serum Anatomy 0.000 description 4
- 101100316840 Enterobacteria phage P4 Beta gene Proteins 0.000 description 3
- 229920001612 Hydroxyethyl starch Polymers 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000008120 corn starch Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 238000000108 ultra-filtration Methods 0.000 description 3
- 102000003925 1,4-alpha-Glucan Branching Enzyme Human genes 0.000 description 2
- 108090000344 1,4-alpha-Glucan Branching Enzyme Proteins 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 229920002527 Glycogen Polymers 0.000 description 2
- 102000003886 Glycoproteins Human genes 0.000 description 2
- 108090000288 Glycoproteins Proteins 0.000 description 2
- 235000019759 Maize starch Nutrition 0.000 description 2
- 240000003183 Manihot esculenta Species 0.000 description 2
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 150000004650 carbonic acid diesters Chemical class 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000001212 derivatisation Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 229940096919 glycogen Drugs 0.000 description 2
- 229920001477 hydrophilic polymer Polymers 0.000 description 2
- -1 hydroxyethyl groups Chemical group 0.000 description 2
- 229940050526 hydroxyethylstarch Drugs 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 229920002307 Dextran Polymers 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 description 1
- 239000008351 acetate buffer Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 125000003071 maltose group Chemical group 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- NALMPLUMOWIVJC-UHFFFAOYSA-N n,n,4-trimethylbenzeneamine oxide Chemical compound CC1=CC=C([N+](C)(C)[O-])C=C1 NALMPLUMOWIVJC-UHFFFAOYSA-N 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 210000000496 pancreas Anatomy 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 239000003058 plasma substitute Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009145 protein modification Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229940032753 sodium iodate Drugs 0.000 description 1
- 235000015281 sodium iodate Nutrition 0.000 description 1
- 239000011697 sodium iodate Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 229940075601 voluven Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/22—Preparation of compounds containing saccharide radicals produced by the action of a beta-amylase, e.g. maltose
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/716—Glucans
- A61K31/718—Starch or degraded starch, e.g. amylose, amylopectin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
- C08B30/18—Dextrin, e.g. yellow canari, white dextrin, amylodextrin or maltodextrin; Methods of depolymerisation, e.g. by irradiation or mechanically
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/20—Amylose or amylopectin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B35/00—Preparation of derivatives of amylopectin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B35/00—Preparation of derivatives of amylopectin
- C08B35/08—Oxidised amylopectin
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
Definitions
- the present invention relates to a method for producing hyperbranched amylopectin and a method for producing coupling products of a hyperbranched amylopectin with active pharmaceutical ingredients.
- hydrophilic polymers to active pharmaceutical ingredients that are administered parenterally can reduce their side effects.
- renal side effects can be reduced or even avoided if the molecular size of the coupling products is above the exclusion limit of the kidney, which acts like a filter.
- the molecular size of the coupling product is adjusted by the appropriately selected molecular weight of the polymer.
- Another advantage of a coupling product of a hydrophilic polymer and a pharmaceutical active ingredient is that the antigenicity of therapeutic proteins is reduced, and the side effects in this regard can thereby be reduced or avoided.
- Such coupling products can also significantly extend the pharmacokinetic half-lives and thus the residence times of the active pharmaceutical ingredients in the patient's serum. This enables the therapy intervals for parenteral administration to be extended considerably.
- Polymers which are suitable for the coupling to active pharmaceutical ingredients described above are in particular polyethylene glycols [Herman, S. et.al., Poly (Ethylene Glycol) with Reactive Endgroups: I. Modification of Proteins, Journal of Bioactive and Compatible Polymers, 10 (1995) 145-187] or polysaccharides, for example starch derivatives and. Dextrans. After corresponding activation, the coupling to the active ingredients takes place.
- the active substances are coupled to the carrier molecules by chemical processes known per se, which are already known from the technique of immobilizing ligands on solid phases or from the chemistry of protein coupling or crosslinking. Appropriate procedures are described in G.T. Hermanson et al, Immobilized Affinity Ligand Techniques, Academic Press Inc. (1992) and in S.S. Wong, Chemistry of Protein Conjugation and Cross-Linking, CRC Press LLC (1993) and C.P. Stowell et al., Neoglycoproteins, the preparation and application of synthetic glycoprotein, In: Advances in Carbohydrate Chemistry and Biochemistry, Vol. 37 (1980), 225-281.
- the polyethylene glycols compared to the starch derivatives are that they are not readily metabolizable in the body, while the starch derivatives are degradable by the body's own serum ⁇ -amylase.
- the starch derivatives e.g. with hydroxyethyl groups, the breakdown in the body can be deliberately delayed, from which a tailored kinetics of the parenterally applicable drug conjugates can be achieved [K. Sommermeyer et.al., Whypharmazie, 8th year No. 8, (1987)].
- a disadvantage of the derivatization of starch with hydroxy groups is that the distribution of the hydroxyethyl groups along the chain is inconsistent due to the manufacturing process, which due to the regionally high degrees of substitution at certain points in the carbohydrate chain form fragments in the body when broken down, which cannot be further broken down by body enzymes , These fractions form the so-called storage fractions [P. Lawin, et.al., Hydoxyethyl starch, A current overview, Georg Thieme Verlag (1989)].
- DE 102 17 994 describes hyperbranched polysaccharides for coupling to pharmacological active substances.
- hyperbranched amylopectins have a structure similar to that of the body's glycogen and are therefore extremely well tolerated and completely degradable in the body.
- the degradation kinetics of the hyperbranched amylopectins can be adjusted so that the desired residence times in the serum can be achieved even without further derivatization.
- EP 1 369 432 discloses soluble, hyperbranched glucose polymers with a proportion of the ⁇ -1,6-glycosidic bonds> 10%, preferably between 12 and 30% and one Molecular weight between 35,000 and 200,000 daltons.
- these polymers are prepared by treating an aqueous starch suspension or starch solution with a branching enzyme to increase the degree of branching and then hydrolyzing it with an enzyme selected from the group consisting of ⁇ -amylase, ⁇ -amylase, anhydroglucosidase and ⁇ -transglucosidase becomes.
- the branching enzyme required for this is extracted from organisms and / or microorganisms and is selected from the group consisting of glycogen branching enzymes, starch branching enzymes and mixtures of these enzymes.
- a disadvantage of the process described in EP 1 369 432 is that it is complex and expensive.
- branching enzymes which are not currently commercially available means that they have to be isolated from organisms and / or microorganisms. It is therefore an object of the invention to provide a simple and inexpensive process for the preparation of hyperbranched polysaccharides which can be used as carrier molecules for active pharmaceutical ingredients.
- a method according to claim 1 solves this problem.
- a first hydrolysis step vegetable amylopectins or starches rich in amylopectin are broken down to molecular weights of less than or equal to 60,000 daltons by ⁇ -amylase or acid hydrolysis, and a second hydrolysis step further degrades the molecular weight of the breakdown product from the first step by a ⁇ -amylase breakdown.
- Such a hyperbranched amylopectin according to the present invention preferably has a weight average molecular weight of 2,000 daltons and a degree of branching> 10%.
- a weight average molecular weight of> 2,000 daltons and ⁇ 29,000 daltons and a degree of branching> 10% and ⁇ 20% is particularly preferred.
- Amylopectins are initially understood to mean very generally branched starches or starch products with ⁇ - (1-4) and ⁇ - (1-6) bonds between the anhydroglucose units.
- the chains are branched via the ⁇ - (1-6) bonds.
- These branching points are present irregularly about every 15 to 30 glucose elements in naturally occurring amylopectins.
- the molecular weight of natural amylopectin is very high in the range of 10 7 to 2 x 10 8 daltons. It is believed that amylopectin also forms helices within certain limits. A degree of branching can be defined for amylopectins.
- the measure of branching is the ratio of the number of anhydroglucose units bearing branch points [ ⁇ - (1-6) bonds] to the total number of anhydroglucose units of the amylopectin. This ratio is expressed in mol%.
- Amylopectin occurring in nature has degrees of branching of approximately 4 mol%.
- Hyperbranched amylopectins have a significantly increased degree of branching compared to the degree of branching that occurs in nature.
- the degree of branching is in any case an average (mean degree of branching), since amylopectins are polydisperse substances.
- hyperbranched amylopectins are understood to mean amylopectins with an average degree of branching greater than or equal to 10 mol%.
- amylopectins with a similar degree of branching are obtained.
- the acid hydrolytic breakdown is easier to carry out and cheaper than the enzymatic breakdown with ⁇ -amylase.
- acid hydrolysis it is also possible to track the degree of hydrolysis during the hydrolysis process using in-process HPGPC and to adjust the degree of hydrolysis in a targeted manner.
- acid hydrolytic degradation is particularly preferred over degradation with ⁇ -amylase.
- the products obtained in the first hydrolysis step are selectively broken down on the ⁇ -1,4-glycosydic anhydroglucose units.
- the maltose units on the outer, non-reducing chain ends are split off without the ⁇ -1,6-glycosidic branches themselves being released.
- the breakdown takes place from the outer chain end down to about 2 glucose units before the first occurring branch point.
- the so-called ß-Genzdextrine obtained in which the 1,6-glycosidic bonds of amylopectin are enriched and thereby the degree of branching is increased.
- starches containing amylopectin can be used as starting material.
- Waxy corn starch and tapioca starch are particularly preferred.
- the ß-gene dextrins in the serum are degraded accordingly slowly, since ⁇ -amylase predominates there for the degradation of polysaccharides.
- the products from the process according to the invention are therefore suitable for coupling with active pharmaceutical ingredients.
- the parameters degree of branching and molecular weight of the amylopectin allow a targeted influencing and thus setting of a desired pharmacokinetics, in particular the achievement of a desired ⁇ -amylase breakdown.
- the degree of branching of the amylopectin plays a key role here, but the molecular weight also has an influence on the kinetics mentioned.
- the distribution of the branching products can also influence the kinetics of the breakdown of the amylopectin in a desired direction.
- low-molecular impurities with an absolute molecular weight ⁇ 5,000 daltons, preferably ⁇ 1,000, are separated off after the first hydrolysis step and / or after the second hydrolysis step.
- This separation is preferably carried out by ultrafiltration, using membranes with a cut off of 5,000 daltons or 1,000 daltons.
- the impurities removed are mainly low-molecular breakdown products of amylopectin or starch and hydrochloric acid.
- the product degraded according to the invention is preferably isolated by freeze-drying.
- ⁇ - and ⁇ -amylase are commercially available, inexpensive enzymes. Hydrolysis with these molecules is therefore easy and inexpensive to carry out. The same applies to acid hydrolysis. Processing by ultrafiltration and freeze-drying is also easy and not expensive.
- the products according to the invention are therefore simple and inexpensive to manufacture.
- the hydrolysis product of the second hydrolysis step is preferably coupled with an active pharmaceutical ingredient.
- the active pharmaceutical ingredient is preferably a protein or a polypeptide.
- the hyperbranched amylopectin produced according to the invention can be coupled to the active pharmaceutical ingredient in any known manner.
- Such couplings of a pharmaceutical active ingredient to a polysaccharide are described, for example, in WO 02/08 0979, PCT / EP 02/06 764, WO 03/07 4088, WO 03/07 4087, PCT / EP 03/13 622, DE 102 54 754.9 and PCT / EP 04/00 488.
- the coupling of the pharmaceutical active ingredient preferably takes place via a free amino function to the anhydroglucose units of the reducing chain end of the hyperbranched amylopectin.
- the reducing end of the hyperbranched amylopectin is particularly preferably activated. It is particularly preferred to oxidize the reducing end of the hyperbranched amylopectin to aldonic acid, to activate the aldonic acid group to the aldonic acid ester group and to couple the active pharmaceutical ingredient to the hyperbranched amylopectin via the aldonic acid ester group.
- the molecular weight and the weight average molecular weight were determined by conventional methods. These include, for example, aqueous GPC, HPGPC, HPLC, light scattering and the like.
- the degree of branching was determined using ⁇ NMR.
- the reaction product was then ultrafiltered using a membrane with a cut-off of 1,000 daltons to remove the maltose and the buffer, and the ⁇ -gene dextrin was isolated by freeze-drying.
- the yield was 60%.
- the characterization showed a degree of branching of 14 mol% (measured with ⁇ NMR) and a weight-average molecular weight of 28,000 Daltons.
- Example 3 was carried out analogously to Example 1, the hydrolysis time being extended to 4 hours.
- the hydrolysis process was followed by in-process HPGPC in order to obtain a product with a weight-average molecular weight ⁇ 15,000 Daltons.
- the cleaning by means of ultrafiltration followed with the aid of a membrane with a nominal cut off of 1,000 Daltons.
- the yield was 25%.
- the characterization of the substance showed a weight-average molecular weight of 10,000 daltons and a degree of branching of 10.3 mol%.
- the ⁇ -gene dextrin was prepared analogously to Example 2, with the
- the ⁇ -gene dextrin was prepared analogously to Example 2, with the difference that the hydrolysis substance from Example 5 was used. The yield was 55%. The characterization of the substance showed a weight average molecular weight of 5,000 daltons and a degree of branching of 16 mol%.
- the waxy maize starch breakdown fraction from Example 2 was dissolved in isotonic phosphate buffer pH 7.2, so that a 1% by weight solution was obtained. The solution was warmed to 37.0 ° C. and 0.5 IU / ml ⁇ -amylase from pig pancreas (company Röche; AS, item no. 102 814) was added. Samples were taken after 1 and 3 hours, the enzyme was inactivated by heat and the molecular weight of the remaining higher molecular fraction was determined by HPGPC. The weight-average starting molecular weight was 28,000 daltons, the weight-average molecular weight after 1 hour of hydrolysis was 11,000 daltons and the weight-average molecular weight after 3 hours of hydrolysis was 7,000 daltons.
- Example 7 The procedure from Example 7 was repeated using the degradation fraction from Example 4.
- the weight average of the starting molecular weight was 7,000 daltons, the weight average Molecular weight after 1 hour hydrolysis 5,500 daltons and the weight average molecular weight after 3 hours hydrolysis 4,600 daltons.
- Comparative experiment 1 was carried out analogously to Example 7, with commercially available hydroxyethyl starch (130 / 0.4, trade name "Voluven") being used instead of the degradation fraction from Example 2.
- the weight-average molecular weight was 140,200 Daltons, and the weight-average molecular weight after 1 hour was 54,700 Daltons The weight average molecular weight after 3 hours of hydrolysis was 33,700 daltons.
- the rate of degradation of the commercially available plasma expander based on hydroxyethyl starch with ⁇ -amylase from comparative experiment 1 is thus comparable to the rate of degradation of the hyperbranched amylopectin fraction from example 7.
- a 25% by weight solution in deionized water was prepared from the hyperbranched degradation fraction prepared according to Example 4.
- a 3.5-fold molar excess, based on the reducing end group, of a 0.05 molar iodine solution was slowly added in portions to this solution and in each case removed in portions with 0.1 NNaOH (3-fold molar amount, based on iodine) , After the addition, the mixture was left to react overnight at room temperature and the solution obtained was then dialyzed with a membrane with a nominal cut-off of 1,000 daltons, the pH being monitored.
- the mixture was adjusted to pH 2.5 with 0.1 N HCl and dialyzed until the Ultrafiltrate had a pH of 5.
- the product was isolated by freeze drying. The yield was 80% of the theoretical yield. The degree of oxidation was> 90% and was determined via the reducing end group.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004009783A DE102004009783A1 (de) | 2004-02-28 | 2004-02-28 | Hyperverzweigte Stärkefraktion, Verfahren zu ihrer Herstellung und ihre Konjugate mit pharmazeutischen Wirkstoffen |
| PCT/EP2005/002057 WO2005083103A1 (de) | 2004-02-28 | 2005-02-26 | Verfahren zur herstellung von hyperverzweigten polysaccharid-fraktionen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1718755A1 true EP1718755A1 (de) | 2006-11-08 |
Family
ID=34853822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05707646A Withdrawn EP1718755A1 (de) | 2004-02-28 | 2005-02-26 | Verfahren zur herstellung von hyperverzweigten polysaccharid-fraktionen |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20070202577A1 (de) |
| EP (1) | EP1718755A1 (de) |
| JP (1) | JP2007523655A (de) |
| KR (1) | KR20060132704A (de) |
| CN (1) | CN101137756A (de) |
| AU (1) | AU2005217091A1 (de) |
| CA (1) | CA2556114A1 (de) |
| DE (1) | DE102004009783A1 (de) |
| RU (1) | RU2006134340A (de) |
| WO (1) | WO2005083103A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10209821A1 (de) | 2002-03-06 | 2003-09-25 | Biotechnologie Ges Mittelhesse | Kopplung von Proteinen an ein modifiziertes Polysaccharid |
| BR0314227A (pt) | 2002-09-11 | 2005-10-25 | Fresenius Kabi De Gmbh | Derivados de amido de hidroxialquila |
| DE10256558A1 (de) * | 2002-12-04 | 2004-09-16 | Supramol Parenteral Colloids Gmbh | Ester von Polysaccharid Aldonsäuren, Verfahren zu ihrer Herstellung und Verwendung zur Kopplung an pharmazeutische Wirkstoffe |
| WO2005014655A2 (en) | 2003-08-08 | 2005-02-17 | Fresenius Kabi Deutschland Gmbh | Conjugates of hydroxyalkyl starch and a protein |
| JP5191729B2 (ja) | 2004-03-11 | 2013-05-08 | フレゼニウス・カビ・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 還元的アミノ化によって製造される、ヒドロキシアルキルデンプンとタンパク質とのコンジュゲート |
| FR2897869B1 (fr) * | 2006-02-28 | 2011-05-06 | Roquette Freres | Polymeres solubles de glucose hautement branches pour la nutrition enterale, parenterale et pour la dialyse peritoneale |
| EP2070950A1 (de) | 2007-12-14 | 2009-06-17 | Fresenius Kabi Deutschland GmbH | Hydroxyalkylstärkederivate und deren Herstellungsverfahren |
| CN107586807A (zh) * | 2017-10-30 | 2018-01-16 | 无锡甜丰食品有限公司 | 一种超高麦芽糖浆的协同制备方法 |
| CN117229428B (zh) * | 2023-11-10 | 2024-01-16 | 广东海天创新技术有限公司 | 辛烯基琥珀酸淀粉及其制备方法和应用 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ250048A (en) * | 1992-10-28 | 1994-10-26 | Enzyme Bio Systems Ltd | Production of maltodextrins by selective hydrolysation of starches by enzymatic methods |
| US5753468A (en) * | 1996-08-05 | 1998-05-19 | National Starch And Chemical Investment Holding Corporation | Stable high viscosity starch based adhesive and method of preparation |
| GB2342656B (en) * | 1998-10-10 | 2003-03-19 | Ml Lab Plc | Production of glucose polymer mixture by starch hydrolysis |
| US6670155B2 (en) * | 2000-02-28 | 2003-12-30 | Grain Processing Corporation | Process for preparing dextrins |
| DE10217994A1 (de) * | 2002-04-23 | 2003-11-06 | Supramol Parenteral Colloids | Konjugate von hyperverzweigten Polysacchariden |
| FR2840612B1 (fr) * | 2002-06-06 | 2005-05-06 | Roquette Freres | Polymeres solubles de glucose hautement branches et leur procede d'obtention |
| DE10256558A1 (de) * | 2002-12-04 | 2004-09-16 | Supramol Parenteral Colloids Gmbh | Ester von Polysaccharid Aldonsäuren, Verfahren zu ihrer Herstellung und Verwendung zur Kopplung an pharmazeutische Wirkstoffe |
-
2004
- 2004-02-28 DE DE102004009783A patent/DE102004009783A1/de not_active Withdrawn
-
2005
- 2005-02-26 JP JP2007500176A patent/JP2007523655A/ja not_active Withdrawn
- 2005-02-26 CN CNA2005800062793A patent/CN101137756A/zh active Pending
- 2005-02-26 RU RU2006134340/13A patent/RU2006134340A/ru not_active Application Discontinuation
- 2005-02-26 EP EP05707646A patent/EP1718755A1/de not_active Withdrawn
- 2005-02-26 AU AU2005217091A patent/AU2005217091A1/en not_active Abandoned
- 2005-02-26 KR KR1020067017021A patent/KR20060132704A/ko not_active Withdrawn
- 2005-02-26 WO PCT/EP2005/002057 patent/WO2005083103A1/de not_active Ceased
- 2005-02-26 CA CA002556114A patent/CA2556114A1/en not_active Abandoned
- 2005-02-26 US US10/590,676 patent/US20070202577A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005083103A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007523655A (ja) | 2007-08-23 |
| US20070202577A1 (en) | 2007-08-30 |
| CN101137756A (zh) | 2008-03-05 |
| KR20060132704A (ko) | 2006-12-21 |
| RU2006134340A (ru) | 2008-04-10 |
| DE102004009783A1 (de) | 2005-09-15 |
| WO2005083103A1 (de) | 2005-09-09 |
| AU2005217091A1 (en) | 2005-09-09 |
| CA2556114A1 (en) | 2005-09-09 |
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