ROS-responsive nanoparticle and application thereof in precise tumor treatment mediated by acoustic dynamic
A nanoparticle and reaction system technology, which is applied in the direction of antineoplastic drugs, medical preparations with non-active ingredients, medical preparations containing active ingredients, etc., can solve problems such as toxicity, and achieve the effect of improving the therapeutic effect
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[0051] The present invention will be described in further detail below through the accompanying drawings and embodiments. The examples are used to help understand the present invention, and should not be regarded as limiting the protection scope of the present invention.
[0052] (1) Preparation of PTX-TL-PEG 1K -NH 2
[0053] Dissolve 1.0mmol TL in 4mL anhydrous DMF, then dissolve 2mmol TEA, 6mmol TC and 2mmol DMAP in 5mL anhydrous DMF, then mix the TL solution with the TEA-TC-DMAP solution, and stir at room temperature for 30min to obtain a reaction system A: Dissolve 0.5mmoL PTX in 2mL of anhydrous DMF and add it dropwise to reaction system A, stir at room temperature for 24h, and then extract the compound obtained by deionized water into deionized water, dichloromethane extraction, saturated physiological Wash with brine, NaSO 4 Drying, purification by silica gel chromatography (dichloromethane / methanol, V:V, 20:1-10:1), and freeze-drying gave the reactant PTX-TL.
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