Abstract:
In one aspect, radioactive nanoparticles are described herein. In some embodiments, a radioactive nanoparticle described herein comprises a metal nanoparticle core, an outer metal shell disposed over the metal nanoparticle core, and a metallic radioisotope disposed within the metal nanoparticle core or within the outer metal shell. In some cases, the radioactive nanoparticle has a size of about 30-500 ran in three dimensions. In addition, in some embodiments, the radioactive nanoparticle further comprises an inner metal shell disposed between the metal nanoparticle core and the outer metal shell. The metal nanoparticle core, outer metal shell, and inner metal shell of the radioactive nanoparticle can have various metallic compositions.
Abstract:
Gold-coated nanoparticles comprising: a) a magnetic core Of XFe2O4 wherein X is a metal selected from the group consisting of Fe, Mn, and Co; b) carbohydrates covalently coupled through a spacer to the gold-coated nanoparticle, wherein said spacer has a thiol linking it to the nanoparticle; and c) an immunoglobulin-binding protein coupled to the gold-coated nanoparticle through an amphiphilic molecule, comprising a functional group capable of coupling the protein and through a thiol group which is attached to the gold coating of the nanoparticle, where a immunoglobulin-binding protein can be coupled to further bioconjugation with antibodies. Said nanoparticles have been found to be useful as contrast agents by MRI.
Abstract translation:金涂覆的纳米颗粒包括:a)XFe 2 O 4的磁芯,其中X是选自Fe,Mn和Co的金属; b)通过间隔物共价偶联到金涂覆的纳米颗粒上的碳水化合物,其中所述间隔物具有将其连接到纳米颗粒的硫醇; 和c)通过两亲性分子与金包被的纳米颗粒偶联的免疫球蛋白结合蛋白,其包含能够偶联蛋白质的官能团和连接到纳米颗粒的金涂层上的硫醇基团,其中免疫球蛋白结合 蛋白质可以与抗体进一步的生物缀合偶联。 已经发现所述纳米颗粒通过MRI用作造影剂。
Abstract:
The present invention relates to aphotosensitizer-containing nanoparticle, comprising a photosensitizer covalently bonded throughout at least a part of said nanoparticle to the nanoparticle matrix material and incorporated therein in a quasi- aggregated state. The present invention furtherrelates to methods for producing the invention nanoparticles, and to methods ofkilling cancer cells by PDT treatment using the said nanoparticles.
Abstract:
본 발명은 마그네슘이 도핑되어 가공된 페라이트 (Engineered Mg doped ferrite) 초상자성 나노입자 (superparamagnetic nanoparticles)의 제조방법과 이를 고온 열 암세포 치료 (hyperthermia) 및 자가 방어기전 열 충격 단백질 유도 (heat shock protein: HSP)에 응용하는 기술에 관한 것이다.
Abstract:
Atherosclerosis is an inflammatory disease of the arterial walls and represents a significant health problem in developed nations. Described is a targeted Magnetic Resonance Imaging (MRI) contrast agent for in vivo imaging of early stage atherosclerosis. Early plaque development is characterized by the influx of macrophages, which express a class of surface receptors known collectively as the scavenger receptors (SR). The macrophage scavenger receptor class A (SRA) is highly expressed during early atherosclerosis. The macrophage SRA therefore presents itself as an ideal target for labeling of lesion formation. By coupling a known ligand for the scavenger receptor, dextran sulfate, to a MRI contrast agent, early plaque formation can be detected in vivo . Targeted MR contrast agents offer a unique opportunity to visualize early plaque development in vivo with high sensitivity and resolution, allowing or early diagnosis and treatment of atherosclerosis.
Abstract:
Novel N-RES agents for use in vitro and in vivo medical and biological applications, such as, for example MRI and/or intravenous administration of pharmaceutical agents are described. The novel N-RES agents are prepared by coating inorganic core particles with a poly(acrylic acid) - poly(alkylene ether) graft copolymer. The resulting polymer-coated inorganic particle cores are useful as imaging agents, therapeutic agents or carriers having increased circulation time due to decrease uptake or recognition by the RES.
Abstract:
Magnetically responsive particles and to their use in systems in which the separation of certain molecules from the surrounding medium is necessary or desirable are disclosed. The magnetically responsive particles consist of a metal, metal oxide or metal alloy core, coated with an organo-metallic polymer having attached thereto an organic functionality to which a variety of organic and/or biological molecules can be coupled. The particles can be dispersed in aqueous media without rapid gravitational settling and conveniently reclaimed from the media using a magnetic field. The magnetically responsive particles of the invention may be coupled to biological or organic molecules with affinity for, or the ability to absorb, or which interact with certain other biological or organic molecules. Particles so coupled may be used in a variety of in vitro or in vivo systems involving separations steps or the directed movement of coupled molecules to particular sites, including immunological assays, other biological assays, biochemical or enzymatic reactions, affinity chromatographic purification, cell sorting and diagnostic and therapeutic uses.
Abstract:
L'invention concerne une nouvelle utilisation de nanoparticules ultrafines, utiles comme agent diagnostic, thérapeutique ou théranostic, caractérisée par leur mode d'administration par les voies aériennes. L'invention vise également les applications découlant de ce nouveau mode d'administration, notamment pour l'imagerie des poumons, et le diagnostic ou pronostic des pathologies pulmonaires. Dans le domaine thérapeutique, les applications envisagées sont celles d'agents radio-sensibilisants ou radioactifs pour la radiothérapie (et éventuellement la curiethérapie), pour la neutronthérapie, d'agents pour la PDT (photodynamic therapy), notamment pour le traitement des tumeurs du poumon.
Abstract:
The invention provides biocompatible mesoporous silica nanoparticles having enhanced stability in biological media, and methods of preparing and using those particles.