CN100356920C - Alkaloid liposome in vinca and production technique - Google Patents
Alkaloid liposome in vinca and production technique Download PDFInfo
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- CN100356920C CN100356920C CNB2004101026236A CN200410102623A CN100356920C CN 100356920 C CN100356920 C CN 100356920C CN B2004101026236 A CNB2004101026236 A CN B2004101026236A CN 200410102623 A CN200410102623 A CN 200410102623A CN 100356920 C CN100356920 C CN 100356920C
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- liposome
- alkaloid
- vinca
- vincristine
- small unilamellar
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- 239000002502 liposome Substances 0.000 title claims abstract description 106
- 229930013930 alkaloid Natural products 0.000 title claims abstract description 37
- 150000003797 alkaloid derivatives Chemical class 0.000 title claims abstract description 37
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- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 11
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 claims abstract description 58
- 239000003814 drug Substances 0.000 claims abstract description 42
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 claims abstract description 34
- 235000012000 cholesterol Nutrition 0.000 claims abstract description 29
- 238000002360 preparation method Methods 0.000 claims abstract description 29
- 150000003904 phospholipids Chemical class 0.000 claims abstract description 18
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- NRJAVPSFFCBXDT-HUESYALOSA-N 1,2-distearoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCCCC NRJAVPSFFCBXDT-HUESYALOSA-N 0.000 claims description 10
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
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- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The present invention discloses alkaloid liposome in vinca and a preparation technology thereof. The present invention belongs to the field of chemical pharmacy. The alkaloid liposome in vinca is prepared from alkaloid in vinca, liposome material and an oxidation inhibitor, and the proportion (w/w) of medicine to fat is from 0.05 to 0.2:1, wherein the liposome material contains phospholipid and cholesterol, the molar ratio of the phospholipid to the cholesterol is 40 to 60:30 to 50 mol%, the oxidation inhibitor is prepared from alpha-tocopherol and desferal, and the concentration of alpha-tocopherol and the concentration of desferal are respectively from 0.015 to 0.025 mg/ml and from 0.10 to 0.20 mg/ml. The preparation technology comprises the following steps: step (1), multi-layer liposome is prepared; step (2), small one-layer liposome is prepared; step (3), the alkaloid liposome in vinca is prepared. The present invention has the advantages of little toxicity of finished products, high entrapment efficiency, high stability and simple and convenient operation of the. Industrial preparation can be carried out.
Description
Technical field
The present invention relates to a kind of alkaloid liposome in vinca and production technology thereof, specifically the liposome of vincristine, vinblastine and vinorelbine and their pH gradient method production technology belong to chemical pharmacy field.
Background technology
Catharanthus alkaloid such as vincristine, vinorelbine and vinblastine are broad-spectrum anti-cancer drugs commonly used clinically.Be mainly used in acute and chronic leukemia, lymphoma, multiple myeloma at present, and some entity tumors, as neuroblastoma, nephroblastoma and Ewing sarcoma and breast carcinoma and small cell lung cancer etc.But as other antineoplastic chemotherapy medicines, vincristine in use produces bigger toxic and side effects to the patient, the toxic and side effects that is mainly dose limitation has neurotoxicity, how after administration, to occur in 6～8 weeks, show as sensory nerve and autonomic nerve is impaired, ataxia, drop foot or cranial nerve paralysis appear in serious meeting.Also have gastrointestinal reaction in addition, spill outside the blood vessel and cause patient's pain to wait unbearably hypodermic stimulation.These toxic and side effects have greatly limited the clinical practice of vincristine.
Liposome is the phospholipid bilayer membrane structure, and main component is phospholipid and cholesterol, to human body avirulence non-immunogenicity.Because its chi footpath size, the surface is easily controlled, membrane property, characteristics such as the big and bio-compatibility of capacity, be used to the parcel of some antitumor drug in recent years, after medicine was devoted to lesions position, medicine slowly released from liposome, reach and reduce the purpose that toxicity improves curative effect, therefore with can yet be regarded as a kind of ideal reduction toxicity and eliminate the method for injection pain of liposome vincristine.
At present, external liposome vincristine is carrying out the test of clinical III phase as medicine, main component be vincristine, sphingomyelin (sphingomyelin, SM) and cholesterol.This liposome has reduced the toxicity of vincristine, but medicine stability and body-internal-circulation time all have much room for improvement.
Summary of the invention
The main technical problem to be solved in the present invention provides the alkaloid liposome in vinca that a kind of toxic and side effects is little, stability is high, the body-internal-circulation time is long.
Another technical problem that the present invention will solve provides the production technology of this alkaloid liposome in vinca.
For achieving the above object, the present invention is by the following technical solutions:
A kind of alkaloid liposome in vinca is made up of catharanthus alkaloid, liposome material and antioxidant, and medicine/fat ratio (w/w) is 0.05～0.2: 1; Wherein the liposome material comprises phospholipid and cholesterol, and the mol ratio of the two is 40～60: 30～50mol%; Antioxidant is made up of α-tocopherol and desferal, and the concentration of the two is respectively composition, and the concentration of the two is respectively 0.015～0.025mg/ml and 0.10～0.20mg/ml.
Also contain DSPE-PEG in the liposome material
2000(poly ethylene-ethylene glycol-DSPE), phospholipid, cholesterol and DSPE-PEG
2000Three's mol ratio is 40～60: 30～50: 4～9.
Described phospholipid is selected from a kind of in sphingomyelin (MS), distearoyl phosphatidylcholine (DSPC) or the hydrogenated phospholipid phatidylcholine (HSPC).
Described catharanthus alkaloid is selected from a kind of in vincristine, vinorelbine and the vinblastine, and what the present invention used is their sulfate or bitartrate (vinorelbine bitartrate), can buy easily.
We used DSPC, HSPC and SM to form the liposome of phospholipid bilayer membrane structure respectively with cholesterol, and were wherein best with the liposome stability that SM and cholesterol are formed.SM (perhaps HSPC, DSPC) is a phospholipid of forming duplicature, is the ultimate constituent of liposome.The effect of cholesterol is to reduce the stability that the flowability of film improves duplicature.The matching principle of their concentration is for obtaining the liposome of optimum stabilization, SM (or HSPC, DSPC) 40～60mol%, cholesterol 30～50mol%, being higher or lower than this concentration ratio liposome can not stablize, there is the bibliographical information cholesterol concentration can not be lower than 30mol%, otherwise just can not play any effect, but cholesterol concentration can not be higher than 50mol% again, can accelerate packaging medicine like that on the contrary and leak out from liposome.
Improving medicine stability is to realize by α-tocopherol and the desferal that adds trace in prescription.One of their effect is hydrolysis and the oxidation that suppresses phospholipid and cholesterol, and another effect is the oxidation that suppresses vincristine.Stability test shows, the percolation ratio of liposome of share these two antioxidants under the present invention fills a prescription dosage is well below only with a kind of liposome of antioxidant wherein.
Generally, medicine fat can be high more than the envelop rate of low more medicine, and stability also increases thereupon, and the medicine fat ratio of the liposome medicament that therefore a lot of envelop rates are higher was at 0.05: 1 or lower.Yet medicine fat is lower than more, and the medicament contg that enters in the liposome is few more, and the utmost point is unfavorable for the clinical practice of medicine.But because the liposome finite capacity if add the macromole PEG that is uniformly distributed in the phospholipid bilayer both sides, takies part liposome capacity again, so improve medicine fat than very difficult.The present invention adopts above-mentioned prescription, and messenger drug fat can reach 0.2: 1 than the highest, and envelop rate is not less than 90% simultaneously.Have never seen in foreign literature and the liposome product and to be higher than this ratio, the medicine fat of the liposome medicament that domestic many research institutions are prepared is than well below this ratio.
Thereby the prolong drug of trying one's best when reducing poisonous side effect of medicine circulation time increase curative effect of medication in vivo also is the target that the liposome medicament research and development are pursued, and the present invention is by adding hydrophilic macromole poly ethylene-ethylene glycol-DSPE (DSPE-PEG in prescription
2000) achieve this end, to compare with the liposome that has only SM and cholesterol to form abroad, the present invention's circulation time in vivo obviously prolongs.For catharanthus alkaloid, used DSPE-PEG
2000The preferred concentration scope be 4～9mol%: but be lower than also body-internal-circulation time of prolong drug of 4mol%, but effect is very not remarkable; And the concentration of PEG is when surpassing 9mol%, can make liposome form cystose micelle and do not present double-decker.DSPE-PEG
2000Can strengthen the liposome membrane surface hydrophilicity, reduce of the combination of various plasma proteins to liposome, make liposome can hide engulfing of reticuloendothelial system very effectively, stability and envelop rate are improved, and the rate that spills reduces, and the body circulation time of liposome is obviously prolonged, redistribution in the body, reduce the toxic reaction of the medicine that wraps, the concentration in focus also significantly improves simultaneously, thereby increases therapeutic index.Medicine still is wrapped in the liposome during in addition owing to injection, has eliminated and after medicine spills the stimulation of organizing has been caused pain.
For the ease of enforcement, the present invention selects the pH gradient method as basic production technology, by its every reaction condition of assay optimization, finally finds out the process route that is suitable for the alkaloid liposome in vinca large-scale production.
A kind of production technology of alkaloid liposome in vinca injection may further comprise the steps:
(1) preparation multilamellar liposome: the amount according to aforementioned formula is prepared chloroform or the chloroform/methanol solution that contains liposome material and antioxidant, and the rotary evaporation film forming adds 200～400mM, and pH value is 2～5 citric acid solution aquations;
(2) preparation small unilamellar vesicle: the citric acid solution that contains multilamellar liposome that step (1) is obtained is squeezed into the small unilamellar vesicle liquid that particle diameter is 80～120 nanometers through extruder after carrying out five freeze thaws circulations;
(3) preparation alkaloid liposome in vinca: the sulfate of catharanthus alkaloid or liquor epinephrinae bitartratis ophthalmicus saline solution joined in the small unilamellar vesicle liquid under 60 ℃ of conditions mix, use the disodium phosphate soln of 0.3～0.6M and regulate the outer liquid pH value to 7.0 of liposome～7.6, in 60 ℃ of water-baths, place more than 10 minutes, catharanthus alkaloid is entered in the small unilamellar vesicle, be cooled to room temperature, remove free catharanthus alkaloid and obtain finished product.
The effect of using 200～400mM citric acid in the step (1) mainly is the envelop rate that improves catharanthus alkaloid.But 200～400mM stabilized liposome osmotic pressure, preferred concentration are 300mM; PH value adopts 2～5 mainly to be to set up the pH gradient.The best pH value of envelop rate is 2, but considers that acidity is strong excessively, can be harmful after liposome destroys, so our preferred pH value 4.0.
Five freeze thaws circulation in the described step (2) be meant with multilamellar liposome with dry ice (20 ℃) freezing after thawing naturally at room temperature, and then freezing with dry ice, so circulate five times.Effect is further to improve envelop rate and stability.Preferred 100 nanometers of the particle diameter of small unilamellar vesicle.
The applied disodium phosphate soln concentration of described step (3) is 0.5M.Regulate the outer pH value of liposome with disodium phosphate soln and get final product, but can not exceed 7.6, otherwise the pH gradient is not easy to keep to being higher than 7.0.
The method of removing free vincristine in the described step (3) is chromatography and centrifugal separation, belongs to general knowledge known in this field, so not superfluous stating.The chromatographic column method can be used Sephadex G-50 post, and with liposome vincristine upper prop, the normal saline eluting gets final product; Centrifuging is that the liposome vincristine is inserted centrifuge, 100, and under the 000g condition centrifugal 5 minutes, remove supernatant, get final product with physiological saline solution pellet.
Advantage of the present invention is: prescription disclosed by the invention can make envelop rate greater than 90% liposome, and toxicity is low, and stability is high, adds DSPE-PEG
2000After, further having prolonged body-internal-circulation time of medicine, the slow release and the curative effect that help medicine improve.PH gradient method after use optimizing is easy and simple to handle, save time the liposome encapsulation height that makes, the response rate 90%, phospholipid, cholesterol and DSPE-PEG
2000The response rate be about 85%.The liposome percolation ratio is low, and particle diameter is (100 ± 10 nanometer) evenly, and good stability is placed for 4 ℃ and preserved 1 year particle diameter no change, and envelop rate is still more than 85%.This method is convenient to sterilization and is removed pyrogen simultaneously, can realize large-scale production.
The invention will be further described below in conjunction with the specific embodiment.
The specific embodiment
Table 1: liposome prescription
| Phospholipid (mol%) | Cholesterol (mol%) | DSPE-PEG 2000 (mol％) | α-tocopherol (mg/ml) | Desferal (mg/ml) | |
| Embodiment 1 | 52 | 43 | 5 | 0.019 | 0.13 |
| Embodiment 2 | 55 | 45 | - | 0.019 | 0.13 |
| Embodiment 3 | 52 | 43 | 5 | 0.015 | 0.20 |
| Embodiment 4 | 55 | 45 | - | 0.015 | 0.20 |
| Embodiment 5 | 52 | 43 | 5 | 0.023 | 0.11 |
| Embodiment 6 | 55 | 45 | - | 0.023 | 0.11 |
| Embodiment 7 | 46 | 45 | 9 | 0.015 | 0.10 |
| Embodiment 8 | 52 | 42 | 6 | 0.022 | 0.15 |
| Embodiment 9 | 50 | 50 | - | 0.015 | 0.01 |
| Embodiment 10 | 60 | 36 | 4 | 0.022 | 0.15 |
Above material source is as follows:
Vinblastine (vinblastine), vincristine (sulfate) and vinorelbine (vinorelbine) are purchased the ten thousand happy Pharmaceuticaies in Shenzhen.
Sphingomyelin (SM, sphingomyelin), DSPC (distearoylphosphatidylcholine), HSPC (hydrogenated soybean phosphatidylcholine), cholesterol and PEG
2000-DSPE purchases Avantipolar Lipids (Alabaster, AL) company in the U.S..
α-tocopherol and desferal purchase the Sigma company in the U.S..
Embodiment 1:
1. preparation multilamellar liposome
With injection SM, cholesterol and DSPE-PEG
2000The three is dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, adds antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.2: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.2, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
This product liposome vincristine good stability, in the test of cultivating in the test of 10 times of buffer and with calf serum, the vincristine of 75-80% still is wrapped in the liposome after 24 hours.
Embodiment 2
1. injection SM and cholesterol are dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, add antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.2: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.2, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
Embodiment 3
1. preparation multilamellar liposome
Injection DSPC, cholesterol and DSPE-PEG
2000The three is dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, adds antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.1: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.4, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
This product liposome vincristine good stability, in the test of cultivating in the test of 10 times of buffer and with calf serum, the vincristine of 75-80% still is wrapped in the liposome after 24 hours.
Embodiment four
1. preparation multilamellar liposome
Injection DSPC and cholesterol are dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, add antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.1: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.4, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
Embodiment 5
1. preparation multilamellar liposome
With injection HSPC, cholesterol and DSPE-PEG
2000The three is dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, adds antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.05: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.4, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
This product liposome vincristine good stability, in the test of cultivating in the test of 10 times of buffer and with calf serum, the vincristine of 75-80% still is wrapped in the liposome after 24 hours.
Embodiment 6
1. preparation multilamellar liposome
Injection HSPC and cholesterol are dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, add antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.05: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.4, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
Embodiment 7
1. preparation multilamellar liposome
With injection SM, cholesterol and DSPE-PEG
2000The three is dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, adds antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.2: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.6, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
This product liposome vincristine good stability, in the test of cultivating in the test of 10 times of buffer and with calf serum, the vincristine of 75-80% still is wrapped in the liposome after 24 hours.
Embodiment 8
1. preparation multilamellar liposome
With injection SM, cholesterol and DSPE-PEG
2000The three is dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, adds antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the liposomal vincristine body
Under 60 ℃ of conditions, be that 0.2: 1 amount will injection vincristine sulphate for injection solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.0, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vincristine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain liposomal vincristine body finished product.
This product liposome vincristine good stability, in the test of cultivating in the test of 10 times of buffer and with calf serum, the vincristine of 75-80% still is wrapped in the liposome after 24 hours.
Embodiment 9
1. preparation multilamellar liposome
Injection SM and cholesterol are dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, add antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. prepare the vinblastine liposome
Under 60 ℃ of conditions, be that 0.2: 1 amount will injection sulfate vinblastine solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.4, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vinblastine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain vinblastine liposome finished product.
This product liposome vinblastine good stability, in the test of cultivating in the test of 10 times of buffer and with calf serum, the vinblastine of 75-80% still is wrapped in the liposome after 24 hours.
Embodiment 10
1. preparation multilamellar liposome
With injection SM, cholesterol and DSPE-PEG
2000The three is dissolved in (v/v, 2: 1) in the chloroform/methanol liquid, adds antioxidant α-tocopherol and desferal.Aforesaid liquid is put into rotary evaporation bottle rotary evaporation film forming, again this film is immersed in the 300mM pH4.0 citric acid solution.
2. preparation small unilamellar vesicle
After five freeze thaw circulations, aforesaid liquid is put into extruder repeatedly push, obtain the small unilamellar vesicle of particle diameter 100 nanometers.The carbon-fiber film that extruding is used is respectively 0.14 and 0.08 nanometer.
3. preparation vinorelbine lipoplast
Under 60 ℃ of conditions, be that 0.2: 1 amount will injection bitartrate vinorelbine solution adds in the small unilamellar vesicle and mixes by medicine/fat ratio, use the sodium hydrogen phosphate (Na of 0.5M
2HPO
4) solution adjusting pH value to 7.0, in 60 ℃ of water-baths, placed 10 minutes.Be cooled to room temperature, remove free vinorelbine.
Microporous membrane degerming, pyrogen and other impurity by 0.22 nanometer promptly obtain the vinorelbine lipoplast finished product.
This product liposome vinorelbine good stability, in the test of cultivating in the test of 10 times of buffer and with calf serum, the vinorelbine of 75-80% still is wrapped in the liposome after 24 hours.
Embodiment 11, acute toxicity test
One. material:
DBA/2J mice and CD-1 mice are purchased the zooscopy institute in the Chinese Academy of Medical Sciences
Vincristine sulfate is purchased the ten thousand happy Pharmaceuticaies in Shenzhen.
The vincristine sulfate lipidosome injection, embodiment 2.
Two. method:
Relatively acute toxic reaction after vincristine sulfate and the disposable mouse tail vein administration of vincristine sulfate lipidosome injection and dead distribution.
With the mice random packet, 10 every group, vincristine sulfate and vincristine sulfate lipidosome injection are respectively with 30 mices.Inject vincristine sulfate and vincristine sulfate lipidosome injection respectively, dosage is 2,4,6 milligrams/kg body weight.Observed 37 days, and observed mice body weight change, acute poisoning symptom and mortality every day and determine median lethal dose(LD 50) (LD50).The results are shown in Table 2.
Three. the result
The acute toxicity test of table 2. vincristine and liposome vincristine (LD50)
| Sample | Mouse Strain | LD50(mg/kg) |
| Free VCR Liposomal VCR | DBA/2J DBA/2J | 2.5 4.2 |
| Free VCR Liposomal VCR | CD-1 CD-1 | 1.9 4.8 |
The liposomal vincristine body effectively reduces the toxicity of load medicine, reduces toxicity 1.7-2.1 doubly in the animal experiment of number of the same race not.
Claims (10)
1. an alkaloid liposome in vinca is characterized in that being made up of catharanthus alkaloid, liposome material and antioxidant, and medicine/fat ratio w/w is 0.05～0.2: 1;
Wherein the liposome material comprises phospholipid and cholesterol, and the mol ratio of the two is 40～60: 30～50mol%;
Antioxidant is made up of alpha-tocopherol and deferoxamine mesylate, and the concentration of the two is respectively 0.015～0.025mg/ml and 0.10～0.20mg/ml.
2. a kind of alkaloid liposome in vinca according to claim 1 is characterized in that: also contain poly ethylene-ethylene glycol-DSPE in the described liposome material;
Phospholipid, cholesterol and DSPE-PEG
2000Three's mol ratio is 40～60: 30～50: 4～9mol%.
3. a kind of alkaloid liposome in vinca according to claim 1 and 2 is characterized in that: described phospholipid is selected from a kind of in sphingomyelin, distearoyl phosphatidylcholine or the hydrogenated phospholipid phatidylcholine.
4. a kind of alkaloid liposome in vinca according to claim 1 and 2 is characterized in that: described catharanthus alkaloid is selected from a kind of in vincristine, vinorelbine and the vinblastine.
5. the production technology of an alkaloid liposome in vinca may further comprise the steps:
(1) preparation multilamellar liposome: the amount according to claim 1 or 2 described prescriptions is prepared chloroform or the chloroform/methanol solution that contains liposome material and antioxidant, and the rotary evaporation film forming adds 200～400mM, and pH value is 2～5 citric acid solution aquations;
(2) preparation small unilamellar vesicle: after the citric acid solution that contains multilamellar liposome that step (1) is obtained carries out five freeze thaws circulations, be squeezed into the small unilamellar vesicle liquid of 80～120 nanometers through extruder;
(3) preparation alkaloid liposome in vinca: the sulfate of catharanthus alkaloid or liquor epinephrinae bitartratis ophthalmicus saline solution joined in the small unilamellar vesicle liquid under 60 ℃ of conditions mix, use the disodium phosphate soln of 0.3～0.6M and regulate the outer liquid pH value to 7.0 of liposome～7.6, in 60 ℃ of water-baths, place more than 10 minutes, catharanthus alkaloid is entered in the small unilamellar vesicle, be cooled to room temperature, remove free catharanthus alkaloid and obtain finished product.
6. the production technology of a kind of alkaloid liposome in vinca according to claim 5 is characterized in that: citric acid concentration is 300mM in the described step (1); PH value is 4.0.
7. the production technology of a kind of alkaloid liposome in vinca according to claim 5, it is characterized in that: five freeze thaws circulation in the described step (2) be meant with multilamellar liposome with dry ice freezing after thawing naturally at room temperature, and then freezing with dry ice, so circulate five times.
8. the production technology of a kind of alkaloid liposome in vinca according to claim 5 is characterized in that: the particle diameter of small unilamellar vesicle is 100 nanometers in the described step (2).
9. the production technology of a kind of alkaloid liposome in vinca according to claim 5, it is characterized in that: the applied disodium phosphate soln concentration of described step (3) is 0.5M.
10. the production technology of a kind of alkaloid liposome in vinca according to claim 5, it is characterized in that: the method for removing free vincristine in the described step (3) is chromatography or centrifugal separation.
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| TR201908531T4 (en) * | 2012-11-20 | 2019-08-21 | Arbutus Biopharma Corp | ADVANCED METHOD FOR PREPARATION OF LIPOSOME CAPSULATED VINCRYSTINE FOR THERAPEUTIC USE |
| CN107875123B (en) * | 2016-09-27 | 2019-07-16 | 北京大学 | Functionalization vinblastine liposome and its application |
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| CN1079385A (en) * | 1992-06-01 | 1993-12-15 | 丛繁滋 | The preparation method of liposome of anticancer medicine |
| CN1088777A (en) * | 1992-12-18 | 1994-07-06 | 丛繁滋 | The preparation method that is used for the chemotherapeutic preparation of directly administering to cancer nidus |
| US20030118635A1 (en) * | 2001-04-04 | 2003-06-26 | Kristian Dalsgaard | Polynucleotide binding complexes comprising sterols and saponins |
| CN1446534A (en) * | 2002-12-30 | 2003-10-08 | 沈阳药科大学 | Lipoidosis of Chinese herbal medicine alkaloid and its preparation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1079385A (en) * | 1992-06-01 | 1993-12-15 | 丛繁滋 | The preparation method of liposome of anticancer medicine |
| CN1088777A (en) * | 1992-12-18 | 1994-07-06 | 丛繁滋 | The preparation method that is used for the chemotherapeutic preparation of directly administering to cancer nidus |
| US20030118635A1 (en) * | 2001-04-04 | 2003-06-26 | Kristian Dalsgaard | Polynucleotide binding complexes comprising sterols and saponins |
| CN1446534A (en) * | 2002-12-30 | 2003-10-08 | 沈阳药科大学 | Lipoidosis of Chinese herbal medicine alkaloid and its preparation |
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