A kind of multifunctional nano drug composition and preparation method thereof
A nano-medicine and multi-functional technology, applied in the direction of drug combination, pharmaceutical formula, anti-tumor drugs, etc., can solve the problems of single treatment method, poor treatment effect, and inability to solve drug tolerance problems, and achieve high drug loading, The effect of improving the treatment efficiency
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[0032] The embodiment of the present invention also provides a preparation method of the above-mentioned multifunctional nanomedicine composition, which includes the following steps:
[0033] S01: the monomethoxy polyethylene glycol-polylactic acid-glycolic acid block copolymer (mPEG-PLGA) and / or polyethylene glycol-polylactic acid-glycolic acid block copolymer (PEG-PLGA) The polymer covalently bonded to the porphyrin compound is dissolved in the first water-immiscible organic solvent to obtain a modified porphyrin polymer solution;
[0034] S02: adding the aqueous solution of the hydrophilic drug to the polymer solution of the modified porphyrin, emulsifying, and obtaining colostrum;
[0035] S03: adding a surfactant and the hydrophobic drug dissolved in a second organic solvent to the colostrum, sonicating, removing the organic solvent under reduced pressure, and then centrifuging and washing to obtain the product.
[0036] Above-mentioned preparation method, wherein:
[0...
Embodiment 1
[0082] Mix 100 nmol of mPEG-PLGA, 50 nmol of protoporphyrin, 50 nmol of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide, 25 nmol of 4-(dimethylamino)pyridine and 50 μL of N,N-Diisopropylethylamine was mixed in 10 mL of anhydrous dichloromethane, reacted at room temperature under argon protection for 48 hours, the product was dialyzed for 24 hours, and freeze-dried to obtain the mPEG-PLGA-porphyrin carrier;
[0083]Dissolve 20mg of mPEG-PLGA-porphyrin in 1mL of dichloromethane, add 0.2mL of doxorubicin hydrochloride aqueous solution (7.5mg / mL), mix and sonicate for 3min, then add 2mL of 2% polyvinyl alcohol aqueous solution, vortex and mix Uniformly, 0.2 mL of paclitaxel (5 mg / mL) dissolved in dichloromethane was added, and after ultrasonic emulsification for 8 min, the mixture was slowly added into 10 mL of 0.3% polyvinyl alcohol and stirred for 10 min. Evaporate under reduced pressure with a rotary evaporator to remove dichloromethane in the solution, centrifuge at 13,000 rpm f...
Embodiment 2
[0085] 100 nmol of mPEG-PLGA, 100 nmol of chlorin e6, 50 nmol of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide, 25 nmol of 4-(dimethylamino)pyridine, and 50 μL of triethylamine Mix in 10 mL of anhydrous dichloromethane, react at room temperature for 48 h under the protection of argon, dialyze the product for 48 h, and freeze-dry to obtain mPEG-PLGA-chlorin e6.
[0086] Dissolve 20 mg of mPEG-PLGA-chlorin e6 in 1 mL of dichloromethane, add 0.2 mL of doxorubicin hydrochloride aqueous solution (5 mg / mL), mix and sonicate for 5 min, then add 10 mL of 2% polyvinyl alcohol aqueous solution, vortex Shake and mix evenly, add 0.2 mL of paclitaxel (5 mg / mL) dissolved in dichloromethane, and then ultrasonic emulsify for 8 minutes, evaporate under reduced pressure with a rotary evaporator to remove dichloromethane in the solution, centrifuge at 13,000 rpm for 10 minutes, and then use Centrifugal washing with ion water to obtain the multifunctional nano-medicine composition.
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