Legumain responsive release adriamycin sustained-release nano preparation and preparation method and application in serving as drug for preparing carrier
A nano-formulation, doxorubicin technology, used in drug combination, liquid delivery, anti-tumor drugs, etc., can solve the problems of no passive targeting effect, no long-term sustained release, etc., to reduce secondary damage, high biological Effects of Compatibility and Safety
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[0021] A Legumain response to release doxorubicin sustained-release nano-formulation, its chemical structure is as follows:
[0022] .
[0023] According to the above technical roadmap, the preparation process can be divided into the following four parts:
[0024] 1. Design and synthesis of Legumain substrate peptide
[0025] According to Legumain's structure and catalytic properties, the design of synthetic substrate peptides is based on the design principle: take asparagine as the center and connect several neutral amino acids on both sides.
[0026] Synthesis of peptide derivatives of doxorubicin
[0027] (1) Weigh out Dox·HCl (579mg or 1mmol) and Fmoc-AAN(Trt)-L-OH (PEP: Phosphoenolpyruvate) (923mg or 1mmol) and dissolve them in DMF (50ml), add DIPEA (Ie N,N-diisopropylethylamine) (0.36ml or 2mmol), stir magnetically for 15min (room temperature, protected from light), add HATU (chemical name is 2-(7-azobenzotriazole) -N,N,N',N'-tetramethylurea hexafluorophosphate) solution (0.42g ...
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