652 results about "Photothermal effect" patented technology

The invention provides a photosensitive liposome with encapsulated water-soluble medicament, which is composed of temperature-sensitive phospholipid, cholesterol and long circulation material and hollow gold nanoparticle, wherein, the hollow gold nanoparticle has a characteristic absorption peak at the near infrared zone with the wavelength of 700-900 nm, and the particle size distribution of the hollow gold nanoparticle is in the range of 20-100 nm. According to the invention, a brand new photosensitive liposome is composed by wrapping water-soluble medicament and hollow gold nanoparticle with temperature-sensitive liposome. Under the extraneous near infrared light, the wrapped hollow gold nanoparticle generates a photo-thermal treatment effect, simultaneously, the photo-thermal effect controls a rapid site-specific delivery of medicament in a large amount from the photosensitive liposome, thereby blood vessels in the tumour part can be damaged or the tumor cells can be killed effectively with a chemical treatment effect of the medicamen. The drug loaded liposome of the present invention realizes synchronous photo-thermal and medicament molecule treatment effect, and the treatment effect of disease such as tumour is substantially improved, and the invention has clinic applicability and real treatment meaning.

The invention discloses a ternary complex nanometer system and a preparation method and application thereof. The system comprises an iron compound, a benzene-ring-containing micromolecule antineoplastic active compound and a polyphenol compound; a weight ratio of the iron compound to the benzene-ring-containing micromolecule antineoplastic active compound to the polyphenol compound is (1 to 4):(2to 10):(5 to 20). Relative to the prior art, according to the invention, different micromolecule compounds or medicines can be stably assembled only by a physical assembling means; the formed complexnanometer medicine not only has an antineoplastic treatment effect of the micromolecule antineoplastic active compound, but also has a ferroptosis treatment effect that the iron compound reacts with the polyphenol compound are mediated on the basis of an intracellular Fenton reaction; moreover, the novel complex nanometer medicine formed by the preparation method disclosed by the invention furtherhas an outstanding photothermal effect; chemotherapy, ferroptosis treatment and photothermal therapy can be integrated into one whole body, take a synergistic effect, beneficiate each other and achieve an all-in-one combined antineoplastic treatment effect.