摘要:
The present invention relates to a delivery carrier including liposomes or nanoparticles for targeting the cells expressed with somatostatin receptor, consisting of a plurality of liposomes that have one phospholipid bilayer coating, one hydrophilic core and a bioactive substance. The bioactive substance is packaged in the hydrophilic core, or embedded in the phospholipid bilayer, or electrically bound with liposomes as a complex, wherein the phospholipid bilayer coating is conjugated with a plurality of molecules in the outer surface. The molecules recognize the somatostatin receptor in the surface of the target cells and induce receptor-mediated endocytosis.
摘要:
A liposome formulation for stably incorporating high content of hydrophobic substance is disclosed. The liposome includes two phospholipids with different phase transition temperatures such as saturated and unsaturated phosphatidyl cholines, hydrophobic substances, cholesterol, cholesterol derivatives, antioxidant and hydrophilic polymer-modified lipids such as MPEG-DSPE.
摘要:
An amphiphilic block copolymer. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nano particle and carrier comprising the amhpiphilic block copolymer for delivery of water-insoluble drugs, growth factors, genes, or cosmetic substances.
摘要:
A method employs the addition of additive to increase the solubility of active ingredients in solution. Furthermore, a nanoparticle apparatus that uses inkjet dispenser is utilized to fabricate nanoparticles. The method comprises: (a) mixing a fenofibrate substance, an organic solvent and a solubility enhancing additive to form a saturated solution; and (b) spray-drying the saturated solution to form the nanoparticles containing fenofibrate, wherein the solubility enhancing additive comprises a surfactant or an excipient.
摘要:
A system for fabricating nanoparticles that includes a micro droplet sprayer, a device, and a drying chamber is disclosed. The micro droplet sprayer, such as an inkjet sprayer, composed of a tank, a channel, an actuator, and orifices is utilized for generation of micro droplets. The device is employed to provide the micro droplet sprayer with energy, thus, forcing droplets out. The droplets are dried in the drying chamber, obtaining nanoparticles.
摘要:
Disclosed is an improved method for hemoglobin purification utilizing a novel two-step dual-aqueous-phase extraction technique to separate hemoglobin from red cell membrane stroma and other protein contaminants. In the first step, a first dual-aqueous-phase liquid system is prepared which comprises an upper aqueous phase containing polyethylene glycol in water and a lower aqueous phase containing a phosphate buffer at a pH of about 10. In the second step, a second dual-aqueous-phase liquid system is prepared which comprises an upper aqueous phase, which contains the polyethylene glycol phase containing the hemoglobin extracted in the first step, and a lower aqueous phase containing a new phosphate buffer at a pH of less than 7.5. After the second extraction step, purified hemoglobin solution can then be obtained by removing the phosphate salt and the minute amounts of polyethylene glycol contained in the lower phase.
摘要:
This present disclosure relates to pharmaceutical compositions for treating tumors using a polymeric micelle encapsulating an anti-tumor drug. The polymeric micelle comprises block copolymers comprising at least one hydrophilic block, at least one hydrophobic block, and at least one zwitterion. The present disclosure also relates to methods of enhancing the solubility of such drugs, methods of increasing the blood circulating time of such drugs, and methods of delivering such drugs to one or more solid tumors.
摘要:
An apparatus and method for forming nanoparticles employs an inkjet dispenser and a nanoparticle formation device. The inkjet dispenser includes at least one orifice. A liquid solution with a substance to be transformed into nanoscale is received in the inkjet dispenser, and is dispensed from the at least one orifice to generate a plurality of microdroplets. The nanoparticle formation device is disposed to receive the microdroplets dispensed by the inkjet dispenser and form the nanoparticles therein.
摘要:
An apparatus and method for forming nanoparticles employs an inkjet dispenser and a nanoparticle formation device. The inkjet dispenser includes at least one orifice. A liquid solution with a substance to be transformed into nanoscale is received in the inkjet dispenser, and is dispensed from the at least one orifice to generate a plurality of microdroplets. The nanoparticle formation device is disposed to receive the microdroplets dispensed by the inkjet dispenser and form the nanoparticles therein.
摘要:
A thermo-sensitve copolymer of following formula; is disclosed; wherein R1 is hydrogen, or —C(═O)—R2; R2 is C7-30 alkyl substituted or unsubstituted with functional groups; R3 is hydrogen, or C1-6 alkyl; and x, y or z individually is an integer greater than 0. The thermo-sensitive copolymers disclosed here are easy to be implanted into a human body through injection. The biodegradability is greatly improved and the cytotoxicity of the copolymers is low.
摘要翻译:下式的热敏共聚物; 被披露 其中R 1是氢或-C(-O)-R 2; R 2是被官能团取代或未取代的C 7-30烷基; R 3是氢或C 1-6烷基; 并且x,y或z分别是大于0的整数。这里公开的热敏共聚物通过注射容易地植入人体。 生物降解性大大提高,共聚物的细胞毒性低。