WO2002032564A1 - Procede et appareil de production de liposomes - Google Patents
Procede et appareil de production de liposomes Download PDFInfo
- Publication number
- WO2002032564A1 WO2002032564A1 PCT/JP2001/008907 JP0108907W WO0232564A1 WO 2002032564 A1 WO2002032564 A1 WO 2002032564A1 JP 0108907 W JP0108907 W JP 0108907W WO 0232564 A1 WO0232564 A1 WO 0232564A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- aqueous phase
- producing
- carbon dioxide
- phospholipid
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/127—Liposomes
- A61K9/1277—Processes for preparing; Proliposomes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/127—Liposomes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/008—Processes carried out under supercritical conditions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
- A61J3/07—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Definitions
- the present invention relates to a method for producing ribosomes using supercritical carbon dioxide and an apparatus therefor.
- the ribosome which is a lipid bimolecular membrane, can encapsulate various water-soluble substances and the like in the ribosome, and is therefore used as a carrier material for transporting a pharmacologically active substance into a living body.
- Liposomes can be obtained by subjecting a suspension of a phospholipid, which is an amphipathic substance, to a process such as stirring.
- Methods for industrially preparing liposomes include (1) an ultrasonic treatment method in which a phospholipid or glycolipid suspension is treated with ultrasonic waves, and (2) a mixed micelle of a phospholipid or glycolipid and a surfactant.
- a freeze-thawing method in which an aqueous solution in which phospholipids or glycolipids are suspended is frozen and then melted to form a lipid bilayer, which is further freeze-thawed to form ribosomes.
- a reverse phase evaporation method in which a small amount of an aqueous solvent is added to an organic solvent that is not soluble in water, and ultrasonic waves are applied to form a WZO emulsion (reverse micelle), and the organic solvent is removed under reduced pressure.
- Phospholipids precipitate during the decompression process, but at this time, an aqueous phase containing a water-soluble substance to be retained flows through a pump 35 and is stirred by a mixer 36 to form ribosomes in a mixer 36. .
- the prepared ribosomes have the advantage of obtaining single-walled ribosomes (SLV) with a relatively uniform size of 0.002 to 0.2 m, but have the problem of low retention capacity for water-soluble substances in the ribosomes. is there.
- JP-A-6-315624 or the like does not form liposomes in a supercritical state, but uses a rapid expansion method (RESS) using a supercritical fluid.
- This method is a method for producing ribosomes by mixing an aqueous solution with phospholipids whose solubility rapidly decreases due to reduced pressure and which precipitates in the form of fine particles.
- the conventional methods (1) to (6) require several steps of operation, often use organic solvents harmful to the human body, There is a disadvantage that a large amount of energy is required for removing the solvent.
- the problem to be solved by the present invention is to provide a method and an apparatus for forming ribosomes having high retention efficiency in a smaller amount without using a harmful organic solvent. Disclosure of the invention
- the present inventors have made intensive studies and found a method for producing ribosomes in one step using supercritical carbon dioxide, and completed the present invention.
- the present invention provides an encapsulating material characterized by adding an aqueous phase containing an encapsulating material to a mixture in which phospholipid or glycolipid is dissolved in carbon dioxide under a supercritical state or a temperature or pressure condition at or above a critical point.
- a pressure-resistant reactor for injecting a mixed fluid in which phospholipids or glycolipids are uniformly dissolved in carbon dioxide under a supercritical state or at a temperature or pressure above a critical point
- An apparatus for producing a liposome containing an encapsulating substance characterized by having an aqueous phase inflow means for injecting an aqueous phase containing a water-soluble or hydrophilic encapsulating substance into the mixture therein; and a pressure-resistant reactor, A supercritical carbon dioxide inflow means for injecting carbon dioxide into the pressure-resistant reactor under a supercritical state or at a temperature higher than the critical point or under pressure conditions, and uniformly dispersed in a co-solvent. And an aqueous phase inflow means for injecting an aqueous phase containing an encapsulating substance. 6
- a feature of the method of the present invention is that a water phase containing a water-soluble or hydrophilic encapsulating substance is added to a mixture in which phospholipids are uniformly dissolved in carbon dioxide under a supercritical state or at a temperature or pressure above the critical point.
- a water phase containing a water-soluble or hydrophilic encapsulating substance is added to a mixture in which phospholipids are uniformly dissolved in carbon dioxide under a supercritical state or at a temperature or pressure above the critical point.
- the supercritical carbon dioxide in the present invention is defined as a supercritical carbon dioxide having a critical temperature (30.98) and a critical pressure (7.3773 ⁇ 0.003 OMPa) or higher.
- Means carbon dioxide and carbon dioxide at a temperature or pressure above the critical point means carbon dioxide under conditions where only the critical temperature or only the critical pressure exceeds the critical condition Yes (but the other one does not exceed the critical condition).
- carbon dioxide in a supercritical state or at a temperature or pressure above the critical point is collectively referred to as “supercritical carbon dioxide”.
- the phospholipid or glycolipid in the present invention is not particularly limited as long as it is a compound capable of forming a lipid bilayer.
- Phospholipid is also called phosphatide, and is a general term for a group of complex lipids that have a phosphate ester and a CP bond.
- Examples of the phospholipid in the present invention include phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidic acid, phosphatidylglycerol, phosphatidylinositol, cardiopine, egg yolk lecithin, hydrogenated egg yolk lecithin, hydrogenated soybean lecithin, hydrogenated soybean lecithin and the like.
- sphingolin lipids such as oral phospholipids, sphingomyelin, ceramide phosphorylethanolamine, and ceramide phosphoryl glycerol.
- glycolipids examples include glycerol lipids such as digalactosyl diglyceride and galactosyl diglyceride sulfate, sphingosaccharides such as galactosylceramide, galactosylceramide sulfate, lactosylceramide, gandarioside G7, gandarioside G6, and gandarioside G4. Lipids can be mentioned.
- a cosolvent In preparing a homogeneous mixture of a phospholipid and supercritical carbon dioxide, it is preferable to use a cosolvent.
- a cosolvent By adding a cosolvent to the system, the solubility of the hardly soluble encapsulated substance in supercritical carbon dioxide can be increased.
- the co-solvent may be added in an amount of 15 wt% or less based on the supercritical carbon dioxide. If it exceeds 15 wt%, a liquid phase of ethanol is precipitated, which is not preferable.
- the addition of ethanol is preferably as small as possible because it inhibits ribosome formation.
- Examples of the co-solvent used for such a purpose include ethyl alcohol.
- the aqueous phase that is added to the homogeneous mixture of phospholipids and supercritical carbon dioxide contains the encapsulating material that is encapsulated in the ribosome.
- the encapsulating substance is not particularly limited as long as it is a water-soluble or hydrophilic substance. Not done.
- the amount of the aqueous phase to be added may be appropriately selected within a range in which water can flow in with fluidity and in a range in which ribosome formation is not inhibited.
- water-soluble or hydrophilic encapsulating substance examples include the following pharmacologically active ingredients.
- Pharmacologically active ingredients include, for example, magnesium L-ascorbyl phosphate, glycosides ascorbic acid, dipotassium glycyrrhizinate; 3-glycyrrhetinic acid, ammonium glycyrrhetinate, stearyl glycyrrhetinate, estin, esculin, pantothenyl alcohol And pantothenic acid and its salts, thiamine, flavin, folate or antibiotics, at least one or more non-steroidal anti-inflammatory drugs, ketope oral phen, ibuprofen, bufexamac or indomethacin. According to the method of the present invention, these pharmacologically active ingredients can be encapsulated in ribosomes in a larger amount than in the past. If so, absorption into the body is expected to increase.
- water-soluble dyes can be mentioned as the encapsulating substance.
- water-soluble dyes include Red No. 104, Red No. 2, Red No. 3, Blue No. 1, Blue No. 2, Yellow No. 4, Yellow No. 5, Green No. 3, Carmine, Carsamine, Monascus dye, Gardenia Dyes, anthocyanin dyes, oropharyngeal fills and the like can be mentioned.
- These water-soluble dyes are very unstable, such as being immediately oxidized and discolored, but a stable dye can be provided by encapsulating these water-soluble dyes in ribosomes.
- ascorbic acid or a salt thereof or a sulfite may be added to the aqueous phase as an antioxidant.
- examples of the medium constituting the aqueous phase containing the encapsulated substance include distilled water, pure water, deep sea water, ultrafiltration water of deep sea water, and the like.
- the use of deep sea water as the medium of the aqueous phase promotes cell growth and provides liposomes with good percutaneous absorption. Is expected.
- aqueous phase containing the encapsulated substance may be introduced while vigorously stirring the homogeneous mixed fluid of the glycolipid and, if necessary, the co-solvent.
- the homogeneous mixed fluid which was initially transparent, gradually became cloudy with the introduction of the aqueous phase (it is thought that reverse micelles were formed), and when the aqueous phase was further introduced, the water into supercritical carbon dioxide (and reverse micelles)
- a cloudy aqueous phase is formed at the bottom of the reaction vessel.
- the pressure is reduced and uniform ribosomes can be obtained.
- the diameter 50 ⁇ ⁇ ! 8800 nm single-layer lamellar ribosomes can be produced.
- ribosomes having a high retention efficiency of 7 to 30% can be produced.
- the ribosome produced by the method of the present invention is considered to be useful as a biological membrane model closer to a biological membrane because the number of ribosome membranes is small.
- the liposome of the present invention does not use an organic solvent harmful to the human body, the toxicity of residual organic matter is within. Therefore, it is useful as a base material that prevents the active ingredient of cosmetics or a formulation that promotes transdermal absorption, a base material that prevents the deactivation of the active ingredient of pharmaceuticals, and a DDS formulation that significantly reduces side effects.
- FIG. 1 is a flowchart showing an example of the first embodiment of the present invention.
- FIG. 2 is a flowchart showing an example of the second embodiment of the device of the present invention.
- FIG. 3 is a flowchart showing an example of the first embodiment of the device of the present invention.
- Fig. 4 is a flow chart showing a conventional method for producing ribosomes by the supercritical carbon dioxide method.
- FIG. 5 shows an image of the ribosome prepared in Example 1 taken by a transmission electron microscope. Figure.
- FIG. 6 is a view showing an image of the ribosome prepared in Example 2 taken by a transmission electron microscope.
- FIG. 7 is a view showing an image of the liposome prepared in Example 3 taken by a transmission electron microscope.
- FIG. 8 is a graph showing the relationship between the lipid concentration of the liposome prepared in Example 4 and retention efficiency.
- FIG. 1 is a flowchart showing an example of the first embodiment of the present invention.
- a homogeneous mixed fluid of supercritical carbon dioxide, phospholipid or glycolipid, and co-solvent is previously injected into pressure-resistant reactor 1. While the pressurized homogeneous mixed fluid is vigorously stirred by the stirrer 2, the aqueous phase containing the sealed substance is dropped into the pressure-resistant reactor 1 via the pump 3 as the aqueous phase inflow means. After a predetermined amount of the aqueous phase is dropped, the pressure is reduced and the pressure-resistant reactor 1 is opened, whereby ribosomes containing the encapsulated substance are obtained.
- FIG. 2 is a flowchart showing an example of the second embodiment of the present invention. Same structure as Fig. 1 Components are given the same reference numerals.
- a homogeneous mixed fluid of supercritical carbon dioxide, phospholipid or glycolipid, and co-solvent is press-fitted into pressure-resistant reactor 1 in advance. While the pressurized homogeneous mixed fluid is vigorously stirred by the stirrer 2, the aqueous phase containing the sealed substance is dropped into the pressure-resistant reactor 1 via the pump 3 as the aqueous phase inflow means.
- a pressure regulating valve 4 is provided as a ribosome discharging means.
- the pressure in the pressure-resistant reactor 1 becomes equal to or higher than a predetermined pressure by the pressure regulating valve 4, the ribosome 5 is discharged, and the receiver 6 is stored in the heliposom 5.
- FIG. 3 is a flowchart showing an example of the second embodiment of the present invention.
- the same components as those in FIG. 2 are denoted by the same reference numerals.
- reference numeral 8 denotes a pump as a means for introducing phospholipid or glycolipid uniformly dispersed in a co-solvent into the pressure-resistant reactor 1
- reference numeral 9 denotes a water-soluble or hydrophilic encapsulating substance. It is a pump as a water phase inflow means for flowing the water phase.
- supercritical carbon dioxide, phospholipid or glycolipid, a cosolvent, and an aqueous phase are simultaneously flown into the pressure-resistant reactor 1 by the pumps 7, 8, and 3, and are stirred by the stirrer 2 to form ribosomes. It is to let.
- Ribosomes were prepared using the production apparatus shown in FIG.
- the pressure-resistant reactor used was a SUS304 variable capacity cell with a sapphire window (cell internal volume: 57.0 2 cm 3 ).
- a pressure-resistant reactor a mixture of 0.014 g of DPPC (dipalmitoylphosphatidylcholine) and 13.3.79 g of supercritical carbon dioxide (pressure 200 atm, temperature 60 C)
- the mixed fluid was charged, and while stirring vigorously, 2.81 ml of a 3.5% aqueous solution of VC-PMG (phosphoric acid-L-scorbylmagnesium) was injected by a pump at a flow rate of 0.05 c cZmin and the VC-PMG Was prepared.
- VC-PMG phosphoric acid-L-scorbylmagnesium
- the shape of the obtained ribosome was observed with a transmission electron microscope (TEM).
- the obtained liposome was a large unilamellar vesicle (LUV) with a size of 100 to 1000 nm.
- Fig. 5 shows the TEM image.
- the retention efficiency of the obtained ribosome was determined by a conventional glucose dialysis method.
- Example 2 As is evident from the results shown in Table 1, the liposome of Example 1 of the present invention using supercritical carbon dioxide exhibited a higher liposome than Comparative Example 1 prepared by a conventional ultrasonic method. It can be seen that the retention efficiency is 10 times or more.
- Example 2
- Ribosomes were prepared using the manufacturing apparatus shown in FIG. The same pressure-resistant reactor as in Example 1 was used. A pressure-resistant reactor was charged with a mixed fluid of 0.014 g of hydrogenated soybean lecithin, 13.794 g of supercritical carbon dioxide (pressure 200 atm, temperature 60 ° C) and 0.96 g of ethanol, and stirred vigorously. 3. 81 ml of a 5% VC-PMG (L-ascorbyl magnesium phosphate) aqueous solution was injected by a pump at a flow rate of 0.05 cc / min. Set the pressure regulating valve to 200 kg f / cm 2, to obtain a ribosome containing the V C-PMG.
- VC-PMG L-ascorbyl magnesium phosphate
- Ribosomes were prepared using the manufacturing apparatus shown in FIG. The same pressure-resistant reactor as in Example 1 was used. A pressure-resistant reactor was charged with a mixed fluid of hydrogenated egg yolk lecithin (0.041 g), supercritical carbon dioxide (pressure 200 atm, temperature 60 C), and ethanol 0.96 g. While vigorously stirring, 1 Omg of ibuprofen and water were added. An aqueous solution in which 2.8 lml was mixed and dissolved was injected by a pump at a flow rate of 0.05 cc / min. The pressure of the pressure regulating valve was set to 200 kf / cm 2 , and a liposome containing ibuprofen was obtained.
- the shape of the obtained ribosome was observed with a transmission electron microscope (TEM).
- the obtained ribosome was a large unilamellar liposome (LUV: 1 arge unil amel lar vesicle) having a size of 100 to 100 O nm.
- Fig. 7 shows the TEM image.
- ribosome drugs prepared by the ultrasonic treatment method (Bangham method), which is a commonly used adjustment method, were quantified. The results are shown in Table 2.
- Example 4 As is clear from the results shown in Table 2, the ribosome of Example 3 of the present invention using supercritical carbon dioxide contained more ribosomes than the ribosome of Comparative Example 2 prepared by the conventional ultrasonic method. It can be seen that the content of the drug in is 10 times or more.
- Example 4
- ribosomes were prepared under the following conditions. Preparation conditions;
- the retention efficiency (%) is plotted on the vertical axis, and the lipid concentration with respect to the amount of water added is plotted on the horizontal axis.
- the retention efficiency of ribosomes prepared by the bangham method which is a general preparation method ( 2 to 3%).
- ribosomes having high retention efficiency can be efficiently produced in one step. Since ribosomes produced by the method of the present invention have high retention efficiency, transdermal absorption increases when the ribosome of the present invention is used for an external preparation, and absorption into the body increases when the ribosome of the present invention is used for an internal medicine.
- ribosomes that promote cell proliferation and have good percutaneous absorption can be obtained.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01974773A EP1334765B1 (en) | 2000-10-13 | 2001-10-11 | Process for producing liposome |
JP2002535796A JP4296341B2 (ja) | 2000-10-13 | 2001-10-11 | リポソームの製造方法およびその装置 |
DE60142487T DE60142487D1 (de) | 2000-10-13 | 2001-10-11 | Verfahren zur herstellung von liposomen |
US10/398,667 US20040099976A1 (en) | 2000-10-13 | 2001-10-11 | Process for producing liposome and apparatus therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-313599 | 2000-10-13 | ||
JP2000313599 | 2000-10-13 |
Publications (1)
Publication Number | Publication Date |
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WO2002032564A1 true WO2002032564A1 (fr) | 2002-04-25 |
Family
ID=18792992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2001/008907 WO2002032564A1 (fr) | 2000-10-13 | 2001-10-11 | Procede et appareil de production de liposomes |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040099976A1 (ja) |
EP (1) | EP1334765B1 (ja) |
JP (2) | JP4296341B2 (ja) |
DE (1) | DE60142487D1 (ja) |
WO (1) | WO2002032564A1 (ja) |
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JP2005145845A (ja) * | 2003-11-12 | 2005-06-09 | Konica Minolta Medical & Graphic Inc | X線検査用造影剤 |
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2001
- 2001-10-11 DE DE60142487T patent/DE60142487D1/de not_active Expired - Lifetime
- 2001-10-11 EP EP01974773A patent/EP1334765B1/en not_active Expired - Lifetime
- 2001-10-11 US US10/398,667 patent/US20040099976A1/en not_active Abandoned
- 2001-10-11 WO PCT/JP2001/008907 patent/WO2002032564A1/ja active Application Filing
- 2001-10-11 JP JP2002535796A patent/JP4296341B2/ja not_active Expired - Lifetime
-
2009
- 2009-02-16 JP JP2009032624A patent/JP5190003B2/ja not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
JP5190003B2 (ja) | 2013-04-24 |
JP4296341B2 (ja) | 2009-07-15 |
EP1334765A1 (en) | 2003-08-13 |
US20040099976A1 (en) | 2004-05-27 |
EP1334765B1 (en) | 2010-06-30 |
EP1334765A4 (en) | 2005-11-09 |
JP2010194377A (ja) | 2010-09-09 |
DE60142487D1 (de) | 2010-08-12 |
JPWO2002032564A1 (ja) | 2004-03-04 |
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