WO2023282573A1 - 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법 - Google Patents
클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법 Download PDFInfo
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- WO2023282573A1 WO2023282573A1 PCT/KR2022/009641 KR2022009641W WO2023282573A1 WO 2023282573 A1 WO2023282573 A1 WO 2023282573A1 KR 2022009641 W KR2022009641 W KR 2022009641W WO 2023282573 A1 WO2023282573 A1 WO 2023282573A1
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- WIPO (PCT)
- Prior art keywords
- botulinum toxin
- clostridium botulinum
- complex protein
- column
- toxin complex
- Prior art date
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
- C07K14/33—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Clostridium (G)
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/14—Extraction; Separation; Purification
- C07K1/16—Extraction; Separation; Purification by chromatography
- C07K1/20—Partition-, reverse-phase or hydrophobic interaction chromatography
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
- C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
- C12N9/52—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from bacteria or Archaea
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
- C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
- C12N9/64—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue
- C12N9/6402—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from non-mammals
- C12N9/6405—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from non-mammals not being snakes
- C12N9/6416—Metalloendopeptidases (3.4.24)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y304/00—Hydrolases acting on peptide bonds, i.e. peptidases (3.4)
- C12Y304/24—Metalloendopeptidases (3.4.24)
- C12Y304/24069—Bontoxilysin (3.4.24.69), i.e. botulinum neurotoxin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the present invention relates to a method for purifying Clostridium botulinum toxin complex protein.
- Botulinum toxin is a type of neurotoxin protein produced by bacteria such as Clostridium botulinum. It attaches irreversibly to presynaptic nerve terminals and blocks muscle contraction by inhibiting the secretion of acetylcholine at the nerve junction. It acts as a secondary muscle relaxant. Due to this function, botulinum toxin has been used for therapeutic or cosmetic purposes since approval by the US FDA in 1989 (KR 10-2010-0107475 A, KR 10-2008-0049152 A, etc.).
- neuromuscular diseases such as strabismus, torticollis or blepharospasm
- cosmetic purposes removing wrinkles, frown lines, treating square jaws, treating hyperhidrosis or migraine. It is used as an injection in Cases such as dysphagia, voice change, dry mouth, and blurred vision have been reported as side effects, but there have been no direct deaths caused by botulinum toxin yet, so it is very effective when used appropriately. It is considered a safe drug.
- botulinum toxin naturally consists of a complex bound with several non-toxic proteins.
- the present inventors intend to provide an improved purification method for isolating a stable and biologically active botulinum toxin complex protein.
- An object of the present invention is to provide a method for purifying Clostridium botulinum toxin complex protein.
- a high-purity botulinum toxin complex protein can be obtained economically and efficiently.
- FIG. 1 shows the results of SDS-PAGE, that is, sodium dodecylsulfate polyacrylamide gel electrophoresis, of purified botulinum toxin complex protein (900 kD) (NTNH: non-toxic non-hemagglutinin, HC : heavy chain of neurotoxin protein, LC: light chain of neurotoxin protein, HA33: hemagglutinin 33, HA17: hemagglutinin 17, HA50: hemagglutinin 50, HA20: hemagglutinin 20).
- NTNH non-toxic non-hemagglutinin
- HC heavy chain of neurotoxin protein
- LC light chain of neurotoxin protein
- HA33 hemagglutinin 33
- HA17 hemagglutinin 17
- HA50 hemagglutinin 50
- HA20 hemagglutinin 20
- One aspect of the present invention provides a method for purifying Clostridium botulinum toxin complex protein.
- the purification method a solution containing Clostridium botulinum toxin complex protein separated from the culture medium,
- step (b) separating the toxin captured in step (a) to obtain an eluent containing the toxin;
- step (c) loading the eluate obtained in step (b) onto a secondary hydrophobic interaction column to capture the toxin and pass impurities through;
- step (d) separating the toxin captured in step (c) to obtain an eluate containing the toxin;
- step (e) performing size exclusion chromatography using the eluent obtained in step (d).
- Clostridium botulinum toxin is also referred to as “Botulinum toxin”, and is a kind of protein derived from Clostridium botulinum , which irreversibly attaches to presynaptic nerve terminals and causes nerve damage. By inhibiting the secretion of acetylcholine at the junction, it refers to a protein that blocks muscle contraction and secondarily acts to show the muscle relaxation effect.
- the botulinum toxin protein has a molecular weight of about 150 kD and is divided into 7 types from A to G according to serological characteristics.
- Botulinum toxin type A is the most lethal natural substance known to humans and besides serotype A, there are six other generally immunologically distinct botulinum toxins, namely botulinum toxin serotypes B, C, D, E, F, and G. has been identified
- the different serotypes can be identified by neutralization with type-specific antibodies, and differ in the severity of the paralysis they cause and the animal species they most affect.
- botulinum toxin is released by clostridial bacteria as a complex comprising a 150 kD botulinum toxin protein molecule along with related non-toxin proteins. Therefore, the botulinum toxin type A complex can be produced by clostridial bacteria in the 900 kD, 500 kD and 300 kD forms.
- Botulinum toxin types B and C can be produced as 500 kD complexes, and botulinum toxin type D as 300 kD and 500 kD complexes.
- Botulinum toxin types E and F can be produced as complexes of about 300 kD. These complexes (ie those with a molecular weight greater than about 150 kD) are believed to include non-toxic hemagglutinin proteins and non-toxin and non-toxic hemagglutinin proteins.
- Botulinum toxin proteins include a pure neurotoxin component of about 150 kD as well as a high molecular weight complex containing non-toxin proteins.
- the complexed form may comprise a botulinum neurotoxin protein and one or more non-toxin hemagglutinin proteins and/or one or more non-toxin non-hemagglutinin proteins.
- the botulinum toxin complex protein may be a complex of botulinum neurotoxin (BoNT), nontoxic nonhemagglutinin (NTNH), and hemagglutinin (HA) proteins.
- the molecular weight of the complex may be greater than about 150 kD.
- a complexed form of botulinum toxin type A may have a molecular weight of about 900 kD, about 500 kD or about 300 kD.
- the purification method of the Clostridium botulinum toxin complex of the present invention can purify the various complexes.
- the botulinum toxin of the present invention may be a type A toxin.
- the botulinum toxin of the present invention may be in the form of a complex bound with a non-toxic protein.
- the botulinum toxin complex protein of the present invention may be a complex of botulinum toxin (BoNT), nontoxic nonhemagglutinin (NTNH), and hemagglutinin (HA) proteins.
- the botulinum toxin complex protein of the present invention may be a complex of BoNT, NTNH, hemagglutinin 70 (HA70), hemagglutinin 33 (HA33), and hemagglutinin 17 (HA17).
- the HA70 is divided into HA20 (hemagglutinin 20) and HA50 (hemagglutinin 50), or the BoNT may be divided into about 50 kD light chain (LC: light chain) and about 100 kD heavy chain (HC: heavy chain). .
- LC light chain
- HC heavy chain
- the botulinum toxin complex protein of the present invention may have a molecular weight greater than 150 kD. Specifically, it may have a molecular weight of about 250 kD to 1400 kD, and more specifically, it may have a molecular weight of 280 kD to 1300 kD, 300 kD to 1200 kD, 700 kD to 1100 kD, 800 kD to 1000 kD, or about 900 kD, but is not limited thereto.
- the term “about” includes not only the exact number described after the term, but also a range that is or is close to the number. It can be determined whether the number is close to or nearly the specific number mentioned, given the context in which it is presented. As an example, the term “about” can refer to a range of -10% to +10% of a numerical value. As another example, the term “about” can refer to a range of -5% to +5% of a given numerical value. However, it is not limited thereto.
- the Clostridium botulinum toxin complex protein of the present invention may be obtained from a Clostridium botulinum culture medium. Specifically, the protein may be isolated from Clostridium botulinum culture medium.
- a step of culturing Clostridium botulinum may be further included, but is not limited thereto.
- the Clostridium botulinum strain may be cultured according to an appropriate medium and culture conditions known in the art. Specifically, Clostridium botulinum strains can be cultured in a normal medium containing appropriate carbon sources, nitrogen sources, phosphorus, inorganic compounds, etc., while controlling temperature, pH, etc. under anaerobic conditions.
- the culture may be about 25 ° C to 40 ° C, specifically 27 ° C to 40 ° C under anaerobic conditions, but is not limited thereto.
- the culturing period may be continued until a desired production amount of toxin protein is obtained, specifically, about 12 to 150 hours, but is not limited thereto.
- the solution containing the Clostridium botulinum toxin complex protein of the present invention may be precipitated prior to the first hydrophobic chromatography step.
- the precipitation may be acid precipitation, but is not limited thereto.
- the acid precipitation may include adding an acid to pH 3.0 to pH 4.0, specifically pH 3.3 to 3.5, and more specifically pH 3.4 to 3.5.
- an acidic solution known in the art for example, sulfuric acid or hydrochloric acid, may be used, but is not limited thereto.
- the solution containing the Clostridium botulinum toxin complex protein of the present invention may be filtered prior to the first hydrophobic chromatography step. Specifically, the solution may be filtered after acid precipitation.
- the filtration step may be performed by a conventionally known process such as microfiltration, ultrafiltration, microfiltration, or deep filtration, and impurities may be removed in the filtration step.
- the device used in the filtration treatment may include a filter having a pore size of about 0.1 ⁇ m to about 0.3 ⁇ m, specifically about 0.2 ⁇ m. However, it is not limited thereto.
- the purification method of the present invention comprises the steps of (a) loading a solution containing Clostridium botulinum toxin complex protein onto a primary hydrophobic interaction column to capture the toxin and pass impurities through; and (b) isolating the toxin captured in step (a) to obtain an eluent containing the toxin by first hydrophobic interaction using a solution containing Clostridium botulinum toxin complex protein. It may be referred to as a step of performing hydrophobic interaction chromatography, but is not limited thereto.
- chromatography refers to any process of separating components of a mixture by passing a mixture through a medium such that the components of the mixture pass through the medium at different rates.
- Chromatography of the present invention includes column chromatography, planar chromatography, thin layer chromatography, gas chromatography, liquid chromatography, fast protein liquid chromatography (FPLC), and high performance liquid chromatography (HPLC). Exemplary types of chromatographic processes or apparatuses are disclosed for each step of the purification process of the present invention, which are applicable to all types of chromatography described above.
- hydrophobic chromatography or “hydrophobic interaction chromatography” is a method for separating molecules based on the relative strength of their hydrophobic interaction with a non-polar stationary phase.
- Hydrophobic chromatography uses the principle that the higher the salt concentration, the stronger the interaction between the non-polar stationary phase and the substance to be separated, and the lower the ionic strength or salt concentration of the buffer solution, the weaker the interaction. Therefore, in the case of using a downward gradient of salt concentration, the less hydrophobic material is eluted first, and the more hydrophobic material is eluted later.
- the hydrophobic interaction column contains ligands such as ether, isopropyl, butyl, octyl, and phenyl. You can use branched columns.
- the hydrophobic interaction column may be a butyl sepharose column or a phenyl sepharose column. Specifically, the hydrophobic interaction column may be a phenyl sepharose column.
- the hydrophobic interaction column includes butyl sepharose high performance (HP), butyl sepharose fast flow (Butyl sepharose fast flow), phenyl sepharose high performance (HP), and phenyl sepharose fast flow ( Phenyl sepharose Fast Flow) column, but is not limited thereto, and any column belonging to a hydrophobic interaction column may be used without limitation.
- HP butyl sepharose high performance
- Butyl sepharose fast flow butyl sepharose fast flow
- HP phenyl sepharose high performance
- Phenyl sepharose Fast Flow Phenyl sepharose Fast Flow
- the step of equilibrating the column using a buffer may be further included.
- equilibration may refer to a step of stabilizing a column with a buffer to prevent protein aggregation or loss of activity due to environmental changes before a protein to be purified is injected into the column.
- conditions such as flow rate, temperature, time, and conductivity of flowing the buffer may be appropriately adjusted.
- a phosphate buffer for example, a citrate buffer, or an acetate buffer may be used as the buffer.
- the column buffer may be a phosphate buffer, for example sodium phosphate.
- step (a) of the purification method of the present invention may be performed under pH 4 to pH 8 conditions, but is not limited thereto.
- step (a) of the purification method of the present invention may be performed under a conductivity condition of about 170 to 220 mS/cm, but is not limited thereto.
- conditions such as flow rate, temperature, and time for flowing the solution may be appropriately adjusted.
- a phosphate buffer, a citrate buffer, or an acetate buffer may be used as the column buffer.
- the column buffer may be a phosphate buffer, for example sodium phosphate.
- the concentration of the column buffer may be adjusted to about 5 mM to 100 mM, for example, 25 mM to 75 mM, or 40 mM to 60 mM.
- the flow rate of the mobile phase may be about 1.0 ml/min to 20.0 ml/min. However, it is not limited thereto.
- an appropriate elution solvent may be used in the step of obtaining an elution solution containing the toxin complex protein in step (b).
- the step (b) may use a concentration gradient.
- toxin complex proteins can be eluted using a stepwise salt gradient or a continuous salt gradient.
- Step (b) may include decreasing the ionic strength or increasing the pH.
- the hydrophobic portion of the protein adsorbed on the stationary phase can be desorbed to the mobile phase by, for example, initiating an inverse salt gradient to decrease the salt concentration.
- a decreasing concentration gradient (descending gradient) of the buffer may be used.
- a buffer having a concentration gradient ranging from about 5.0 M to about 0.0 M, about 4.0 to about 0.0 M, about 3.5 M to about 0.0 M, and about 3.0 M to about 0.0 M may be used.
- the buffer may be, for example, sodium sulfate (Na 2 S0 4 ), sodium chloride (NaCl), potassium chloride (KCl), ammonium acetate (NH 4 OAc), and the like, and may specifically be sodium chloride (NaCl), but is not limited thereto. It may be appropriately selected and used from a range known in the art without.
- the eluent obtained in step (b) of the purification method of the present invention may be precipitated prior to performing step (c).
- the precipitation may be acid precipitation.
- the acid precipitation may include adding an acid. Specifically, the acid precipitation may be adding ammonium sulfate to the eluent. More specifically, the acid precipitation may be adding ammonium sulfate to the eluent so that the final saturation is about 30 to 50%. For example, the concentration of ammonium sulfate at the degree of saturation may be about 19g/100ml to about 32g/100ml, but is not limited thereto.
- the precipitated eluent may undergo an additional purification process, for example, filtration and/or centrifugation.
- the precipitate obtained can be redissolved for further deduction processes.
- the precipitate may be dissolved using a solution of pH 5.0 to 7.0, for example, a sodium phosphate buffer solution having a concentration of about 40 to 60 mM may be used, but is not limited thereto.
- step (c) loading the eluent obtained in step (b) onto a secondary hydrophobic interaction column to capture the toxin and pass impurities through; and (d) isolating the toxin captured in step (c) to obtain an eluent containing the toxin by performing second hydrophobic interaction chromatography using the eluent obtained by performing the first chromatography. It can be referred to as a step to perform. Hydrophobic interaction chromatography is as described above.
- the secondary hydrophobic interaction column is ether, isopropyl, butyl, octyl, phenyl, etc.
- a column having a ligand can be used.
- the hydrophobic interaction column may be a butyl sepharose column or a phenyl sepharose column.
- the hydrophobic interaction column may be a phenyl sepharose column.
- the hydrophobic interaction column includes butyl sepharose high performance (HP), butyl sepharose fast flow (Butyl sepharose fast flow), phenyl sepharose high performance (HP), and phenyl sepharose fast flow ( Phenyl sepharose Fast Flow) column, but is not limited thereto, and any column belonging to a hydrophobic interaction column may be used without limitation.
- HP butyl sepharose high performance
- Butyl sepharose fast flow butyl sepharose fast flow
- HP phenyl sepharose high performance
- Phenyl sepharose Fast Flow Phenyl sepharose Fast Flow
- the step of equilibrating the column may be further included prior to step (c) of the purification method of the present invention.
- the buffer for example, phosphate buffer, citrate buffer or acetate buffer may be used.
- the column buffer may be a phosphate buffer, for example sodium phosphate.
- the flow rate may be, for example, about 1.0 ml/min to 20.0 ml/min.
- the conductivity may be, for example, about 130 to 170 mS/cm. However, it is not limited thereto.
- step (c) of the purification method of the present invention may be performed under pH 4 to pH 8 conditions, but is not limited thereto.
- step (c) of the purification method of the present invention may be performed under a conductivity condition of 130 to 170 mS/cm, but is not limited thereto.
- conditions such as flow rate, temperature, and time for flowing the solution may be appropriately adjusted.
- a phosphate buffer, a citrate buffer, or an acetate buffer may be used as the column buffer.
- the column buffer may be a phosphate buffer, for example sodium phosphate.
- the concentration of the column buffer may be adjusted to about 5 mM to 100 mM, for example, 25 mM to 75 mM, or 40 mM to 60 mM.
- the flow rate of the mobile phase may be about 1.0 ml/min to 20.0 ml/min. However, it is not limited thereto.
- an appropriate elution solvent in the step (d) of obtaining an eluent containing the toxin complex protein, an appropriate elution solvent may be used.
- a concentration gradient may be used.
- toxin complex proteins can be eluted using a stepwise salt gradient or a continuous salt gradient.
- Step (d) may include decreasing the ionic strength or increasing the pH.
- the hydrophobic portion of the protein adsorbed on the stationary phase can be desorbed to the mobile phase by, for example, initiating an inverse salt gradient to decrease the salt concentration.
- a decreasing concentration gradient (downward gradient) of the buffer may be used.
- a buffer having a concentration gradient ranging from about 2.5 M to about 0.0 M, about 2.3 M to about 0.0 M, about 2.1 M to about 0.0 M, or about 2.0 M to about 0.0 M may be used.
- the buffer may be, for example, sodium sulfate (Na 2 S0 4 ), sodium chloride (NaCl), potassium chloride (KCl), ammonium acetate (NH 4 OAc), etc., and may be specifically sodium chloride (NaCl), but is not limited thereto. It may be appropriately selected and used from a range known in the art without.
- the eluent obtained in step (d) of the purification method of the present invention may be precipitated prior to step (e).
- the precipitation may be acid precipitation.
- the acid precipitation may include adding an acid. Specifically, the acid precipitation may be adding ammonium sulfate to the eluent. More specifically, the acid precipitation may be adding ammonium sulfate to the eluent so that the final saturation is about 70 to 90%. For example, the concentration of ammonium sulfate at the degree of saturation may be about 47g/100ml to about 67g/100ml, but is not limited thereto.
- the precipitated eluent may undergo an additional purification process, for example, filtration and/or centrifugation.
- the precipitate obtained can be redissolved for further purification processes.
- the precipitate may be dissolved using a solution of pH 5.0 to 7.0, for example, a sodium phosphate buffer solution having a concentration of about 10 to 30 mM may be used, but is not limited thereto.
- components may be separated according to molecular size by (e) size exclusion chromatography (SEC).
- SEC size exclusion chromatography
- a botulinum toxin complex protein having a specific size can be isolated from step (e).
- size exclusion chromatography means to separate a mixture based on the rate at which solutes of various sizes pass through a porous matrix (permeability).
- the column that can be used for the size exclusion chromatography of the present invention is superdex, sephacryl, superose, sephadex, sepharose, polyacrylic
- a polyacrylamide or silica-based column may be used, specifically a Superose column, more specifically a Superose-6 column, but it is not limited as long as it can separate the desired botulinum toxin complex protein.
- a phosphate buffer, a citrate buffer, or an acetate buffer may be used as the column buffer for the size exclusion chromatography.
- the column buffer may be a phosphate buffer, for example sodium phosphate.
- the concentration of the column buffer may be adjusted to about 5 mM to 100 mM, for example, 5 mM to 50 mM, or 10 mM to 30 mM.
- a buffer solution having a pH of 5 to 7 may be used as the buffer solution.
- the flow rate may be about 0.001 ml/min to 10.0 ml/min or about 0.05 ml/min to 0.5 ml/min. However, it is not limited thereto.
- botulinum toxin complex proteins of 250 kD to 1400 kD may be separated through the size exclusion chromatography step of the present invention, but is not limited thereto.
- the botulinum toxin complex protein isolated according to the purification method of the present invention can have high purity. Specifically, it may have a purity of about 90% or more, about 95% or more, about 96% or more, about 97% or more, about 97.5% or more, or about 98% or more, but is not limited thereto.
- Example 1 Cultivation of botulinum bacteria and isolation of toxin
- Clostridium botulinum stored at -80 ° C was thawed, put in a seed culture medium, and cultured for 24 hours at 37 ° C anaerobic conditions to increase the number of bacteria. After putting the culture solution with the increased number of bacteria into the main culture solution and further culturing for 92 to 100 hours under 35 °C anaerobic conditions, virus inactivation was performed through acid precipitation to pH 3.4. Upon completion of the precipitation, the botulinum toxin was eluted with a buffer and then filtered through a sterilized 0.2 ⁇ m filter without external contact.
- the filtered solution containing the botulinum type A toxin of Example 1 was loaded onto a column filled with Phenyl Sepharose hydrophobic interaction chromatography resin. Equilibration/washing was performed by flowing the equilibration/elution buffer (50 mM sodium phosphate, 3M sodium chloride, pH 6.0) before loading at a flow rate of 5 ml/min and a conductivity of 188 mS/cm.
- equilibration/elution buffer 50 mM sodium phosphate, 3M sodium chloride, pH 6.0
- the salt step change was reduced with a buffer of 50 mM sodium phosphate, pH 6.0 under conditions of a flow rate of 5 ml/min and a conductivity of 188 mS/cm. (3.0M-0.0M sodium chloride gradient) was used to elute the botulinum toxin from the column.
- Ammonium sulfate was added to the eluent collected by the method of Example 2-1 to a final saturation of 40% (24.3 g/100 ml) to precipitate, and then centrifuged to obtain a precipitate.
- the toxin protein was in contact with the inner surface of the sterile container, and contact with the outside did not occur.
- 50 mM sodium phosphate buffer (pH 6.0) secondary hydrophobic interaction chromatography was performed.
- Example 2-2 The re-dissolved solution of Example 2-2 was centrifuged to separate the supernatant, and the separated supernatant was subjected to FPLC (fast protein liquid chromatography, Fast Protein Liquid Chromatography).
- FPLC fast protein liquid chromatography, Fast Protein Liquid Chromatography
- an equilibration buffer 50 mM sodium phosphate, 2 M sodium chloride, pH 6.0
- the toxin-containing buffer 50 mM sodium phosphate, 2 M sodium chloride buffer, pH 6.0
- the injection step was performed and the flow through (FT) liquid was collected in a sterile vessel while the toxin complex was bound to the hydrophobic interaction column material.
- FT flow through
- Ammonium sulfate was added to the eluent collected by the method of Example 2-3 so that the final saturation was 80% (56.1 g/100 ml) to precipitate, and then centrifuged to obtain a precipitate.
- the toxin protein was in contact with the inner surface of the sterile container, and contact with the outside did not occur.
- size exclusion chromatography was performed.
- the re-dissolved solution of Examples 2-4 was centrifuged to separate the supernatant, and the separated supernatant was subjected to FPLC (fast protein liquid chromatography) connected to a Superose-6 size exclusion chromatography column. ) was loaded. Before loading, the column was equilibrated by flowing equilibration/elution buffer (20 mM sodium phosphate, pH 6.0) at a flow rate of 0.2 ml/min. After equilibration, 100 mL of 20 mM sodium phosphate buffer at pH 6.0 was flowed, and fractions of the eluted peak were sequentially obtained to separate samples containing proteins of about 900 kDa in size.
- equilibration/elution buffer (20 mM sodium phosphate, pH 6.0
- SDS Sodium dodecyl sulfate polyacrylamide gel electrophoresis
- a 50 mM sodium phosphate solution containing 250 mM NaCl at pH 6.0 was used, the HPLC column was connected, and 20 ⁇ g of botulinum type A toxin protein obtained in Example 2 was loaded to obtain 0.4 mL. /min for 60 minutes.
- botulinum toxin complex protein (about 900 kD) such as botulinum toxin type A can be obtained in high purity without impurities.
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Abstract
Description
Claims (22)
- 배양액으로부터 분리된 클로스트리디움 보툴리눔 (Clostridium botulinum) 독소 복합체 단백질을 포함하는 용액을,(a) 1차 소수성 상호작용 컬럼에 로딩하여, 상기 독소를 포획하고 불순물을 통과시키는 단계;(b) 상기 (a) 단계에서 포획된 독소를 분리하여, 상기 독소를 포함하는 용리액을 수득하는 단계;(c) 상기 (b) 단계에서 수득한 용리액을 2차 소수성 상호작용 컬럼에 로딩하여, 상기 독소를 포획하고 불순물을 통과시키는 단계;(d) 상기 (c) 단계에서 포획된 독소를 분리하여, 상기 독소를 포함하는 용리액을 수득하는 단계; 및(e) 상기 (d) 단계에서 수득한 용리액을 이용하여 크기배제 크로마토그래피를 수행하는 단계를 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (a) 단계 이전에 클로스트리디움 보툴리눔 (Clostridium botulinum) 균주를 배양하는 단계를 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제2항에 있어서, 상기 균주의 배양액을 산 침전(acid precipitation) 하는 단계를 더 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제3항에 있어서, 상기 산 침전은 pH 3.0 내지 pH 4.0이 되도록 산(acid)을 첨가하는 것을 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제3항에 있어서, 상기 산 침전된 용액을 여과하는 단계를 더 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (a) 단계는 pH 4 내지 pH 8; 및 전도도(conductivity) 170 내지 220 mS/cm의 조건에서 수행되는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (a) 단계의 컬럼 완충액은 인산 완충액인 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (b) 단계는 농도구배(concentration gradient) 를 이용하는 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (b) 단계와 (c) 단계 사이에, (b) 단계에서 수득한 용리액을 산 침전(acid precipitation)하는 단계를 더 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제9항에 있어서, 상기 산 침전(acid precipitation) 단계는 용리액에 황산암모늄을 최종 포화도가 30 내지 50%가 되도록 첨가하는 것을 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (c) 단계는 pH 4 내지 pH 8; 및 전도도(conductivity) 130 내지 170 mS/cm의 조건에서 수행되는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (c) 단계의 컬럼 완충액은 인산 완충액인 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (d) 단계는 농도구배를 이용하는 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (d) 단계와 (e) 단계 사이에, (d) 단계에서 수득한 용리액을 산 침전(acid precipitation)하는 단계를 더 포함하는 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제14항에 있어서, 상기 산 침전(acid precipitation) 단계는 용리액에 황산암모늄을 최종 포화도가 70 내지 90%가 되도록 첨가하는 것을 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 소수성 상호작용 컬럼은 부틸 세파로스 및 페닐 세파로스 컬럼으로 구성된 군으로부터 선택되는 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (e) 단계는 분자량 250 kD 내지 1400 kD의 단백질을 분리하여 수득하는 것을 포함하는, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (e) 단계의 크기배제 크로마토그래피는 수퍼덱스 (superdex), 세파크릴 (sephacryl), 수퍼로스 (superose), 세파덱스 (sephadex), 세파로스(Sepharose), 폴리아크릴아마이드(polyacrylamide) 또는 실리카 기반(silica-based) 컬럼을 사용하는 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (e) 단계의 크기배제 크로마토그래피는 pH 5 내지 pH 7의 조건에서 수행되는 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 (e) 단계의 컬럼 완충액은 인산 완충액인 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항에 있어서, 상기 방법으로 정제된 클로스트리디움 보툴리눔 독소 복합체 단백질은 순도 98% 이상인 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
- 제1항 내지 제21항 중 어느 한 항에 있어서, 상기 클로스트리디움 보툴리눔 독소 복합체 단백질은 보툴리눔 독소(BoNT; Botulinum neurotoxin), 비독성 비헤마글루티닌 (NTNH; nontoxic nonhemagglutinin), 및 헤마글루티닌(HA: hemagglutinin) 단백질의 복합체인 것인, 클로스트리디움 보툴리눔 독소 복합체 단백질의 정제방법.
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JP2024500100A JP2024522930A (ja) | 2021-07-05 | 2022-07-05 | クロストリジウム・ボツリヌス毒素複合体タンパク質の精製方法 |
US18/574,497 US20240317798A1 (en) | 2021-07-05 | 2022-07-05 | Method for purifying clostridium botulinum toxin complex protein |
EP22837925.1A EP4368634A1 (en) | 2021-07-05 | 2022-07-05 | Method for purifying clostridium botulinum toxin complex protein |
CN202280047811.XA CN117897398A (zh) | 2021-07-05 | 2022-07-05 | 纯化肉毒梭菌毒素复合蛋白的方法 |
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- 2022-07-05 WO PCT/KR2022/009641 patent/WO2023282573A1/ko active Application Filing
- 2022-07-05 EP EP22837925.1A patent/EP4368634A1/en active Pending
- 2022-07-05 US US18/574,497 patent/US20240317798A1/en active Pending
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US20240317798A1 (en) | 2024-09-26 |
JP2024522930A (ja) | 2024-06-21 |
KR20230007129A (ko) | 2023-01-12 |
EP4368634A1 (en) | 2024-05-15 |
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