Efficient targeting drug-loaded nano-micelle as well as preparation method and application thereof
A drug-loading nanometer and nanomicelle technology, which is applied in the field of nano-biomedicine, can solve the problems of high permeability, unsuitable for blood tumor treatment, poor anti-tumor effect, etc., and achieve high drug loading, encapsulation rate, and killing effect. Good and good monodispersity effect
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Embodiment 1
[0028] A method for preparing highly efficient and targeted drug-loaded nanomicelles, comprising the steps of:
[0029] (1) The weight average molecular weight is 1.2×10 4 The mPEG-PLGA was dissolved in an organic solvent at 500rpm to make the concentration 10mg / mL, and a small molecule anti-leukemia drug hydrochloride equivalent to 4% of the mass of mPEG-PLGA was added. Molecular anti-leukemia drug hydrochloride molar 1 / 3 triethylamine, stirred for 1 hour to obtain solution 1; solution 1 was added to the PBS buffer solution with pH=7.2 at a constant speed of 2mL / h to form an inner core to encapsulate the drug, Nanomicelle with hydrophilic outer shell; the molecular weight cut-off is 3.5×10 3 The dialysis bag is dialyzed to remove organic solvents and free small molecule anti-leukemia drugs, and vacuum-dried at 30°C to obtain drug-loaded nanomicelles with a particle size of 85-105nm; the volume ratio of the solution one to the PBS buffer solution is 1 :6.
[0030] (2) Use 1...
Embodiment 2
[0036] A method for preparing highly efficient and targeted drug-loaded nanomicelles, comprising the steps of:
[0037] (1) The weight average molecular weight is 3×10 4 The PEG-PLA was dissolved in an organic solvent at 800rpm to make the concentration 20mg / mL, and a small molecule anti-leukemia drug hydrochloride equivalent to 10% of the mass of the PEG-PLA was added. Molecular anti-leukemia drug hydrochloride molar 1 / 3 triethylamine, stirred for 3 hours to obtain solution 1; solution 1 was added to the PBS buffer solution with pH=7.6 at a constant speed of 5mL / h to form an inner core to encapsulate the drug, Nanomicelle with hydrophilic outer shell; the molecular weight cut-off is 1.2×10 4 The dialysis bag was dialyzed to remove organic solvents and free small molecule anti-leukemia drugs, and vacuum-dried at 60°C to obtain drug-loaded nanomicelles with a particle size of 45-65nm (see figure 1 ); The volume ratio of the solution one and the PBS buffer is 1:10.
[0038] (2)...
Embodiment 3
[0045] A method for preparing highly efficient and targeted drug-loaded nanomicelles, comprising the steps of:
[0046] (1) The weight average molecular weight is 2×10 4 The mPEG-PCL was dissolved in an organic solvent at 650rpm so that the concentration was 15mg / mL, and a small molecule anti-leukemia drug hydrochloride equivalent to 7% of the mass of mPEG-PCL was added. Molecular anti-leukemia drug hydrochloride molar 1 / 3 triethylamine, stirred for 2 hours to obtain solution 1; solution 1 was added to PBS buffer at pH=7.4 at a constant speed of 3.5mL / h to form an inner core to encapsulate the drug , nano-micelle with hydrophilic shell; the molecular weight cut-off is 8×10 3 The dialysis bag is dialyzed to remove organic solvents and free small molecule anti-leukemia drugs, freeze-dried to obtain drug-loaded nanomicelles, and its particle size is 60-85nm; the volume ratio of the solution one to the PBS buffer is 1:8 .
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