WO2006057429A1 - ブロックコポリマーのモーフォロジ-の変化方法 - Google Patents
ブロックコポリマーのモーフォロジ-の変化方法 Download PDFInfo
- Publication number
- WO2006057429A1 WO2006057429A1 PCT/JP2005/022035 JP2005022035W WO2006057429A1 WO 2006057429 A1 WO2006057429 A1 WO 2006057429A1 JP 2005022035 W JP2005022035 W JP 2005022035W WO 2006057429 A1 WO2006057429 A1 WO 2006057429A1
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- WIPO (PCT)
- Prior art keywords
- drugs
- polymer
- block copolymer
- pharmaceutical preparation
- pressure
- 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.)
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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
- A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
- A61K9/1075—Microemulsions or submicron emulsions; Preconcentrates or solids thereof; Micelles, e.g. made of phospholipids or block copolymers
-
- 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
- A61K31/7042—Compounds having saccharide radicals and heterocyclic rings
- A61K31/7048—Compounds having saccharide radicals and heterocyclic rings having oxygen as a ring hetero atom, e.g. leucoglucosan, hesperidin, erythromycin, nystatin, digitoxin or digoxin
-
- 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
- A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
Definitions
- the present invention is formed from a block copolymer comprising a hydrophilic segment ⁇ and a hydrophobic segment characterized by being subjected to a high-pressure treatment.
- the present invention relates to a pharmaceutical preparation containing a drug-encapsulated polymer micelle and a method for high-pressure treatment of a block copolymer for the production of such a pharmaceutical preparation.
- a block copolymer having a hydrophilic segment and a hydrophobic segment is used as a drug carrier, and a method of encapsulating a certain drug in a polymer micelle formed by the copolymer is known (JP-A-6-1). 0.75 6 5 or US Pat. No. 5,4 4 9, 5 13 3).
- a composition containing homogeneous polymer micelles encapsulating a poorly water-soluble drug and a method for preparing the same are also known (Japanese Patent Application Laid-Open No. 1 1 3 3 5 2 6 7).
- block copolymers consisting of a hydrophilic segment of polyethylene glycol and a hydrophobic segment of polyamino acid have the ability to automatically form micelles in water, making them suitable for use in drug deliries. .
- the block copolymer used for micelle formation aggregates in water to form spherical micelles with the tip of the hydrophobic segment on the inside.
- the size of micelles ranges from a few nanometers to hundreds of nanometers.
- the three-dimensional structure of the block copolymer is more advantageous if it has a molecularly homogeneous structure because uniform monodisperse micelles with uniform particle sizes can be formed.
- the ones that have undergone the usual synthesis and purification steps of block copolymers include those that include various three-dimensional structures due to polyamino acid segments, but do not have a homogeneous structure.
- micelles with wide dispersibility or divided into two or more peaks based on the size are formed, and the filterability is extremely poor. There is a case. Such micelles may not be suitable for drug delivery. Disclosure of the invention
- the present invention provides a block copolymer in a morphological state capable of forming micelles suitable for drug delivery.
- the present inventor forms a uniform monodisperse micelle having a substantially uniform particle size by subjecting a block copolymer composed of a hydrophilic segment and a hydrophobic segment to high pressure treatment, and its filterability. was found to be extremely good, and the present invention was completed.
- This application includes the following inventions.
- the biocompatible block copolymer having a higher-order structure is treated with a high pressure to form a polymer in a state in which the higher-order structure of the polymer is broken.
- the repeating unit of the hydrophilic segment ⁇ is 30 to 100, and the repeating unit of the hydrophobic segment ⁇ is 10 to 100, (1) to (1 2) Any pharmaceutical formulation. .
- a method for treating a block copolymer comprising a hydrophilic segment and a hydrophobic segment for the formation of a drug-encapsulating polymer micelle comprising the step of subjecting the block copolymer to high pressure treatment. Characterized by the processing method.
- the biocompatible block copolymer having a higher-order structure is subjected to high-pressure treatment, so that the higher-order structure of the polymer is broken.
- hydrophobic segment ⁇ is a polyamino acid derivative
- the hydrophilic segment repeating unit is 30 to: L 0 00, and the hydrophobic segment repeating unit is 10 to 100
- Pile cancer drugs comprising a drug selected from the group consisting of malaria drugs, biologics, gene therapy drugs such as DNA and RNA, antibody drugs, proteins and peptides.
- Fig. 1 shows Z potential measurements (POWERSPECTRUM) for drug-treated pressurized micelles (a) and untreated drug-treated micelles (b).
- Fig. 2 is a photograph showing the properties of a solution of a pressure-treated block copolymer and an untreated block copolymer.
- the block copolymer that can be used in the present invention includes a so-called AB type or ABA type consisting of a hydrophilic segment (hereinafter also referred to as an A segment) and a hydrophobic segment (hereinafter also referred to as a B segment). It can be a block copolymer.
- the polymer constituting the hydrophilic segment include, but are not limited to, polyethylene glycol, polyphosphoric acid, polyoxyethylene, polysaccharide, polyacrylamide, polyacrylic acid, and polyacrylate. Examples thereof include segments derived from amide, polymer acrylate, polyvinyl pyrrolidone, polyvinyl alcohol, polymethacrylate, polyacrylate, polyamino acid or derivatives thereof. Of these, preferred are those composed of polyethylene glycol.
- the hydrophilic segment may have a low molecular functional group at the end opposite to the binding end with the hydrophobic segment as long as it does not adversely affect the formation of the polymer micelle.
- the hydrophobic segment includes, but is not limited to, a polypeptide, particularly a polyhomoamino acid polypeptide, such as L mono- or D-amino acid, or a racemic form thereof, particularly L-amino acid, such as poly ( Aspartic acid), poly (glutamic acid), polyaspartic acid ester, polyglutamic acid ester, and their partial hydrolysis Decomposition, polylysine, polyacrylic acid, polyacrylic acid, polyphosphoric acid, polylactic acid, polyalkylene oxide, long chain alcohol, other well-known biocompatible polymers, biodegradable polymers Etc.
- a polypeptide particularly a polyhomoamino acid polypeptide, such as L mono- or D-amino acid, or a racemic form thereof, particularly L-amino acid, such as poly ( Aspartic acid), poly (glutamic acid), polyaspartic acid ester, polyglutamic acid ester, and their partial hydrolysis Decomposition, polylysine, poly
- Hydrophobic segments are also formed in the hydrophilic segment at the end opposite to the binding end with the hydrophilic segment, as long as they do not adversely affect the interaction between the drug and the hydrophobic segment when forming polymer micelles. It can have a low molecular functional group in the same manner as described above.
- hydrophilic and hydrophobic segments as described above are limited to the size of each segment as long as they can form polymer micelles in an aqueous solution (or aqueous medium) in the presence of a poorly water-soluble drug.
- the hydrophilic segment as described above has a repeating unit of preferably 30 to 100, more preferably 50 to 60,000, while hydrophobic The segment is preferably in the range from 10 to 100, more preferably from 15 to 80, in the repeating unit.
- the present invention shows the effect of improving the dispersibility of the micelle and the filterability thereof by subjecting the block copolymer for forming a micelle comprising a hydrophilic segment and a hydrophobic segment to high pressure treatment.
- high-pressure treatment is thought to improve the dispersibility and filterability of micelles by changing the higher order structure of the block copolymer, for example by bringing it into a broken state.
- Such high-pressure treatment is preferably achieved by subjecting the block copolymer to ultra-high pressure dispersion and emulsification treatment.
- the ultra-high pressure dispersion / emulsification treatment can be performed using, for example, an ultra-high pressure homogenizer.
- the ultra-high pressure homogenizer for example, a microfluidics (Microcroidics (registered trademark) M-110-EH) manufactured by Microfluidics is preferably used.
- the pressure of ultra high pressure dispersion and emulsification treatment is, for example, pressure 3, OOOMPa or more, or 5, 0 0 0 MP a Above, preferably 10 0, OOOMPa or more, more preferably 2 0, OOOMPa or more. There is no upper limit on the pressure, but considering the load on the equipment, it is preferably 100, OOOMPa or less.
- the temperature at which the ultra-high pressure dispersion / emulsification treatment is carried out is not particularly limited, but is preferably 0 ° C or higher, more preferably 4 ° C or higher, and even more preferably 10 ° C or higher. In particular, 20 ° C or more, particularly preferably 25 ° C or more, most preferably 30 ° C or more, 120 ° C or less, more preferably 100 ° C or less, more preferably 80 ° C or more. C or less, particularly 70 ° C. or less, particularly preferably 60 ° C. or less, and most preferably 50 ° C. or less.
- the pressure treatment time is not particularly limited, but for example, about 1 to 30 minutes may be appropriate.
- auxiliaries selected from the group consisting of sugars, inorganic salts and polyethylene glycol.
- the sugars that can be used as such auxiliaries are not particularly limited, but preferred ones include maltose, trehalose, xylitol, glucose, sucrose, fructose, and lacquer. Monosaccharides such as mannitol and dextrin, origo sugars and sugar alcohols.
- inorganic salts can be used as long as they are pharmaceutically acceptable, but preferred examples include chlorides such as sodium chloride, potassium chloride, magnesium chloride, and calcium chloride. .
- Examples of such polyethylene render recalls include the Mac mouth goals described in the Pharmaceutical Additives Encyclopedia 1 0 0 0, 1 5 4 0, 4 0 0 0, 6 0 0 0, 2 0 0 0 0, and 3 5 It is convenient to use 0 0 0.
- the dispersion is prepared by adding the block copolymer and each auxiliary agent to water at the same time and stirring, or preparing an aqueous solution of the auxiliary agent beforehand, and adding a block copolymer thereto or vice versa. It can be prepared by stirring and mixing.
- ultrasonic waves may be used.
- Such dispersions are not limited in force S, generally the block copolymer is 0.1 to 40% by weight concentration, and optionally each saccharide is 0.5 to 80% by weight.
- the drug can be used in the present invention so that polyethylene glycol can be contained at a concentration of 0.5 to 40% by mass and inorganic salts can be contained at 0.5 to 10% by mass.
- any drug as long as it can be encapsulated in the polymer micelle formed by the block copolymer any anticancer agent, immunosuppressive agent, antibiotic, antirheumatic agent, antibacterial agent, Antihypertensive drugs, centrally acting drugs, hormone drugs, diabetes drugs, anti-inflammatory drugs, analgesics, antiviral drugs, antimalarial drugs, biologics, gene therapy drugs such as DNA and RNA, antibody drugs, proteins and peptides Chosen from Such drugs include, but are not limited to, oral kissilomycin, paclitaxel, topotecan, camptothecin, cisbratine, daunorubicin hydrochloride, methotrexate, mitomycin (:, docetaxel, vincrestine sulfate and the like.
- Anticancer drugs consisting of derivatives, polyene antibiotics such as amphotericin B, nice yutin, etc., and other fat-soluble drugs such as prostaglandins and their derivatives, including oral kissilomycin, paclitaxel, topotecan, For docetaxel, the method of the present invention can be conveniently used.
- an organic solution may be prepared by dissolving such a drug in a water-immiscible organic solvent.
- solvents are limited Examples of such solvents include dichloromethane, black mouth form, jetyl ether, dibutyl ether, ethyl acetate, butyl acetate, and mixed solvents thereof.
- the concentration of the drug in the solution varies depending on the combination of the solvent and the drug used, but in general, it can be 0.1 to 50% by mass.
- the above mixing operation can be performed at room temperature or low temperature.
- aqueous dispersion thus prepared and the organic solution are mixed, and the mixture thus formed is subjected to a stirring process (including sonication) sufficient for the drug to be enclosed in the polymer micelle.
- a stirring process including sonication
- Such treatment should be carried out at room temperature or at a lower temperature ( ⁇ 5 ° C.).
- a drug-containing polymer micelle dispersion can be obtained.
- saccharides and polyethylene glycol as exemplified above, are added to the dispersion, and, for example, in some cases, freezing is performed thereafter. It is possible to stabilize the drug-containing polymer micelle in the drying treatment or to suppress aggregation between the micelle particles. Saccharides and / or polyethylene dallicol is determined based on whether or not these are added when preparing the above-described polymer micelle dispersion, and the final concentration is 0.1 to 80% by mass for each saccharide.
- a freeze-dried product of drug-containing polymer micelle is prepared, and the obtained freeze-dried product is reconstituted with an aqueous medium. If it is within the range where there is no adverse effect, it may be added to exceed such a concentration.
- the aqueous medium can be pure water, deionized water, buffered water, isotonic water, or the like.
- the pH of the preparation of the present invention is preferably 4.0 to 7.5, and in some cases, a pH adjusting agent and an antioxidant ( Ascorbic acid, sodium ascorbate, sodium thiosulfate) can be mixed.
- composition comprising the drug-containing polymer micelle forms a uniform monodisperse micelle having a substantially uniform particle size.
- the particle size of the micelles formed depends on the size of the block copolymer, but is preferably in the range of 10 to 200 nm, more preferably 20 to 18 Onm.
- a composition comprising such drug-containing micelles can be a preparation for oral administration or a preparation for parenteral administration, depending on the drug, but it is particularly advantageous when preparing a preparation for parenteral administration. is there.
- Preparations for parenteral administration, such as injections are commonly used in pharmaceutical preparations with the addition of salts and sugars and other compounds as necessary to make them isotonic with blood.
- the above drug-containing polymer micelles are mixed in a liquid diluent such as water, ethyl alcohol or propylene glycol, and if necessary, a suspending agent such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol, etc. Can be prepared together.
- a liquid diluent such as water, ethyl alcohol or propylene glycol
- a suspending agent such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol, etc.
- the drug-containing polymeric micelle dispersion is optionally further subjected to sonication and, if necessary, filtration.
- the ultrasonic treatment is not limited, but may be performed, for example, at 1 to 200 W, preferably 10 to 50 W, for example 1 second to 2 hours, preferably 1 minute to 1 hour.
- the filtration treatment is not particularly limited, and for example, a hydrophilic membrane filter of 0.45 ⁇ m, preferably 0.22 m is used.
- mP EG Polyethylene glycol
- PBLA Poly / 3 (L- (Aspartic acid)
- PEG-PBLA (12-50) PEG-PBLA (12-50)
- mP EG-PBLA PEG-PBLA (12-50) (Nippon Yushi Co., Ltd .: Lot. M2N531) 49.9 mg was weighed and dissolved in 5 ml of water. Then, Kisosilomycin (manufactured by Sigma) / Dichloromethane (manufactured by Wako Pure Chemical Industries, Ltd.) (20 mg / ml) 500 1 was added little by little and prepared at 4 ° C. Stir overnight. After stirring, the sample is used as is, subjected to 10 minutes of sonication (1 3 0 W), 10 minutes of sonication (1 3 0 W) and 0.22 ⁇ m membrane filter. Each particle size was measured with NIC0MP 380 ZLS.
- the z-potential measurement was performed on the material filtered through a 0.22 m membrane filter, and the amount of drug (encapsulation rate) in micelles relative to the amount of drug used (10 mg) was also measured.
- encapsulation rate filter-filtered micelles were disintegrated in acetonitrile: methanol: 0.2M phosphate buffer (pH 6.1) 35:35:30 to absorb 210M. The index was measured by HPLC.
- Microfluidizer treatment (20, OOOpsi, 30 ° C, 10 times) as described in Example 1 and lyophilized PEG— PBLA (PEG-P BLA (12-50)) 50.4 mg was weighed and dissolved in 5 ml of water. Then, kisssilomycin (Sigma) / dichloromethane (Wako Pure Chemical Industries, Ltd.) (20 mg / ml) 500 1 prepared in advance was added little by little at 4 ° C. Stir overnight. After stirring, the sample was left as it was, subjected to sonication for 10 minutes (13OW), sonication for 10 minutes (13OW), and 0.22 m membrane filter. Each particle size was measured with NIC0MP 380 ZLS. In addition, the Z-potential measurement was performed on the 0.22 / m membrane filter, and the encapsulation rate was determined as described above.
- Table 2 shows the particle size measurement results for the drug-encapsulated micelles
- Fig. 1 shows the Z potential measurement results
- Table 3 shows the drug encapsulation rate. From the results shown in Table 2, it can be seen that even when the drug is actually encapsulated, the micelles subjected to pressure treatment exhibit better dispersibility than the untreated micelles.
- the Z potential measurement results in Fig. 1 show that there are two peaks in the case of drug-treated untreated micelles (b), whereas in the case of drug-filled and treated micelles, there is only one peak. (A). This suggests that when the drug is encapsulated using the untreated block copolymer, micelles with roughly two drug concentrations are formed.
- FIG. 2 is a photograph showing the solution before and after pressure treatment. (1) and (2) in the figure indicate the difference in the lot. From the figure, the turbidity of the solution is significantly reduced by subjecting the block copolymer to pressure treatment. It became clear that we could
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Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05811357A EP1815869A4 (en) | 2004-11-24 | 2005-11-24 | PROCESS FOR CHANGING THE MORPHOLOGY OF BLOCK COPOLYMERS |
| JP2006547990A JPWO2006057429A1 (ja) | 2004-11-24 | 2005-11-24 | ブロックコポリマーのモーフォロジーの変化方法 |
| US11/805,858 US20080166380A1 (en) | 2004-11-24 | 2007-05-23 | Method for altering morphology of block copolymer |
| US12/720,564 US20100160603A1 (en) | 2004-11-24 | 2010-03-09 | Method for altering morphology of block copolymer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-339341 | 2004-11-24 | ||
| JP2004339341 | 2004-11-24 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/805,858 Continuation US20080166380A1 (en) | 2004-11-24 | 2007-05-23 | Method for altering morphology of block copolymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006057429A1 true WO2006057429A1 (ja) | 2006-06-01 |
Family
ID=36498160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/022035 Ceased WO2006057429A1 (ja) | 2004-11-24 | 2005-11-24 | ブロックコポリマーのモーフォロジ-の変化方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US20080166380A1 (ja) |
| EP (1) | EP1815869A4 (ja) |
| JP (1) | JPWO2006057429A1 (ja) |
| WO (1) | WO2006057429A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009157279A1 (ja) * | 2008-06-24 | 2009-12-30 | ナノキャリア株式会社 | シスプラチン配位化合物の液体組成物 |
| JP2010529094A (ja) * | 2007-06-08 | 2010-08-26 | アバンテイス・フアルマ・エス・アー | ポリソルベート80中への溶媒中のドセタキセルの直接溶解 |
| JP2010536554A (ja) * | 2007-08-21 | 2010-12-02 | ザ・リージェンツ・オブ・ザ・ユニバーシティ・オブ・カリフォルニア | 共重合体安定化エマルション |
| WO2011001869A1 (ja) * | 2009-07-02 | 2011-01-06 | 株式会社シャローム | ナノスフェアの製造方法、ナノスフェア、これを含有する皮膚外用組成物および化粧料 |
| WO2011058776A1 (ja) * | 2009-11-12 | 2011-05-19 | 独立行政法人科学技術振興機構 | ブロックコポリマー、ブロックコポリマー-金属錯体複合体、及びそれを用いた中空構造体キャリア |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9801818B2 (en) | 2007-12-31 | 2017-10-31 | Samyang Biopharmaceuticals Corporation | Method for stabilizing amphiphilic block copolymer micelle composition containing poorly water-soluble drug |
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| JPH06107565A (ja) * | 1992-08-14 | 1994-04-19 | Res Dev Corp Of Japan | 物理吸着型高分子ミセル医薬 |
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| JPH11335267A (ja) * | 1998-05-27 | 1999-12-07 | Nano Career Kk | 水難溶性薬物を含有するポリマーミセル系 |
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2005
- 2005-11-24 EP EP05811357A patent/EP1815869A4/en not_active Withdrawn
- 2005-11-24 JP JP2006547990A patent/JPWO2006057429A1/ja not_active Withdrawn
- 2005-11-24 WO PCT/JP2005/022035 patent/WO2006057429A1/ja not_active Ceased
-
2007
- 2007-05-23 US US11/805,858 patent/US20080166380A1/en not_active Abandoned
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2010
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010529094A (ja) * | 2007-06-08 | 2010-08-26 | アバンテイス・フアルマ・エス・アー | ポリソルベート80中への溶媒中のドセタキセルの直接溶解 |
| JP2010536554A (ja) * | 2007-08-21 | 2010-12-02 | ザ・リージェンツ・オブ・ザ・ユニバーシティ・オブ・カリフォルニア | 共重合体安定化エマルション |
| US8283308B2 (en) | 2007-08-21 | 2012-10-09 | The Regents Of The University Of California | Copolymer-stabilized emulsions |
| WO2009157279A1 (ja) * | 2008-06-24 | 2009-12-30 | ナノキャリア株式会社 | シスプラチン配位化合物の液体組成物 |
| JP5458255B2 (ja) * | 2008-06-24 | 2014-04-02 | ナノキャリア株式会社 | シスプラチン配位化合物の液体組成物 |
| US8895076B2 (en) | 2008-06-24 | 2014-11-25 | Nanocarrier Co., Ltd. | Liquid composition of cisplatin coordination compound |
| WO2011001869A1 (ja) * | 2009-07-02 | 2011-01-06 | 株式会社シャローム | ナノスフェアの製造方法、ナノスフェア、これを含有する皮膚外用組成物および化粧料 |
| JP2011011144A (ja) * | 2009-07-02 | 2011-01-20 | Kansai Univ | ナノスフェアの製造方法、ナノスフェア、これを含有する皮膚外用組成物および化粧料 |
| WO2011058776A1 (ja) * | 2009-11-12 | 2011-05-19 | 独立行政法人科学技術振興機構 | ブロックコポリマー、ブロックコポリマー-金属錯体複合体、及びそれを用いた中空構造体キャリア |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006057429A1 (ja) | 2008-06-05 |
| US20080166380A1 (en) | 2008-07-10 |
| US20100160603A1 (en) | 2010-06-24 |
| EP1815869A4 (en) | 2011-04-06 |
| EP1815869A1 (en) | 2007-08-08 |
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