可視化光熱治療用微納米近紅外吸收劑的研究
[Abstract]:The photothermal treatment is a minimally invasive tumor treatment technology developed in recent years, the local temperature of the tumor is increased to kill the tumor cells by laser, the fixed point killing can be realized, the toxicity of the whole body system is greatly reduced, Photothermal therapy is therefore seen as one of the most promising techniques for the treatment of tumors. However, effective photothermal treatment generally requires the assistance of photothermal therapeutic agents. The present inorganic photothermal therapeutic agent has high photothermal conversion efficiency, but due to the difficulty of surface modification, the target of the inorganic photothermal therapeutic agent is poor, the drug is difficult to carry, and the non-degradable property of the inorganic photothermal therapeutic agent is also worrying; and the organic photothermal therapeutic agent generally has good biocompatibility, But its lower photothermal conversion efficiency and light thermal stability limit its further application. In addition, successful photothermal treatment also requires the use of suitable imaging techniques. Therefore, the novel photothermal therapeutic agent with the imaging function, the high targeting property and the drug loading capability, the high photothermal conversion efficiency and the photothermal stability is of great significance to the development of the novel photothermal therapeutic agent. Aiming at the problems that the current copper sulfide nano-particle photothermal therapeutic agent has poor targeting property and drug-carrying difficulty and the like, the invention is characterized in that the copper sulfide nano-particles and the micro-bubble ultrasonic contrast agent are bonded, In addition, the targeted delivery of the copper sulfide nanoparticles to the tumor site under the aid of ultrasonic diagnosis is realized, the effective tumor photothermal treatment is carried out, the precision and the treatment of the photothermal treatment are greatly improved, And the gelatin-adriamycin copolymer with the chemotherapy drug adriamycin is synthesized by the periodate oxidation method according to the characteristic of a large amount of the gelatin hydrolase in the tumor part, and the gelatin-adriamycin copolymer with the chemotherapeutic drug adriamycin is prepared by the periodate oxidation method, and the enzyme-collecting response drug release agent is prepared as a stabilizing agent. The enzyme-responsive copper sulfide nanoparticles integrated with photo-thermal treatment and photo-thermal treatment have the advantages that the synergistic treatment of the photothermal treatment and the chemotherapy on the tumor tissue is realized, the treatment effect is greatly improved, In order to avoid the potential toxicity of the inorganic photothermal therapeutic agent in the long-term retention of the in vivo, the present study has developed a biocompatible, organic, polyorganosiloxane nanoparticles as a new photothermal imaging function the therapeutic agent is prepared by one-step liquid-phase dispersion polymerization method, The nanoparticles have excellent dispersion and stability in the aqueous solution and the biological medium, and have higher photothermal conversion efficiency and photothermal conversion compared with the traditional photothermal therapeutic agent gold nanorod. Because of its remarkable near-infrared-light absorption characteristics, the photo-acoustic imaging of the deep tissues can be well done by the nanoparticles, the depth of the photoacoustic imaging in the body reaches 4.3 cm, and the photothermal ablation of the external tumors in the body has confirmed that the poly-encapsulated nanoparticles are used in the treatment of tumor photothermal therapy. The large potential. Due to the poor solubility of the organic polyfluorocarbon material, it severely limits the advance of the polyfluorocarbon material. In order to overcome this defect, the soluble polyfluorocarbon polymer is synthesized by the present study, and the liquid fluorocarbon-coated poly-phenylene oxide is prepared by a simple oil-in-water emulsion process. / nanocapsules. The internal wrap of the liquid fluorocarbon can significantly enhance the in-vivo ultrasound echo signal, while the poly-encapsulated shell layer ensures its superior light The preparation method has good dispersibility in the aqueous solution and the biological medium, and a novel multifunctional photothermal therapeutic agent with an ultrasonic imaging function is proved by the photothermal ablation experiment of the tumor outside the body and has the advantages of being provided with a novel multifunctional photothermal therapeutic agent with an ultrasonic imaging function, The multi-functional photothermal therapeutic agent obtained for the combination of simple functional modules may increase the amount of drug used by the patient at the time of treatment, thus increasing the patient's metabolic burden and potential The present study makes use of the co-agglutination of the soluble organic polyoxometalate complex with the high molecular weight of the polyethylene and the alkanone polymer, and a single-step oil-in-water microemulsion method is adopted to prepare the multi-functional multi-functional poly-phenylene ether hollow body with the function of ultrasonic imaging. The microballoon photothermal therapeutic agent has good dispersibility in the aqueous solution and the biological medium, and the internal cavity is made to have good ultrasound. The experimental results of photothermal ablation of the tumor outside the body confirm that the hollow microspheres can effectively kill the tumor cells under the irradiation of near-infrared laser, and have a very important role in the photothermal treatment of the tumor under the ultrasound imaging monitoring. In conclusion, by combining the inorganic photothermal therapeutic agent copper sulfide nanoparticles with the microbubble ultrasound contrast agent, the ultrasonic imaging and the targeted delivery of the copper sulfide nanoparticles to the tumor site are realized. effective photothermal treatment is carried out; further, according to the characteristics of the high content of the gelatin hydrolase in the tumor site, the enzyme-responsive copper sulfide nanoparticles with the enzyme-collecting response release medicament, the photoacoustic imaging and the photothermal treatment function are successfully prepared, and the synergistic effect of the photothermal treatment and the chemotherapy is realized, in order to avoid the potential toxicity of the inorganic photothermal therapeutic agent in the long-term storage of the in vivo, the biological compatible organic polycarbodiimide nano-particles are used as a multifunctional photothermal therapeutic agent with high photothermal conversion efficiency and light thermal stability, Photo-thermal treatment of the image and the tumor is achieved; the defect of poor solubility of the traditional polycondensing agent is overcome through the synthesis of the soluble polyagglutination complex, and the polyacrylate micro/ nano glue integrating the ultrasonic diagnosis and the photothermal treatment function is successfully prepared. Vesicle and poly-encapsulated hollow microsphere, and its use in the visual treatment of tumo
【學(xué)位授予單位】:哈爾濱工業(yè)大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2013
【分類號】:R318.08
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