The present invention relates to a magnetic nanoparticle having a Curie temperature which is within a biocompatible temperature range, a method for preparing same, and a nanocomposite and a target substance detection composition comprising the magnetic nanoparticle. As the magnetic nanoparticle of the present invention has a Curie temperature within the temperature range of 0 degrees centigrade to 41 degrees centigrade, the ferromagnetic and paramagnetic properties of the magnetic nanoparticle may be controlled within a biocompatible temperature range at a temperature at which a biological control agent is not destroyed, and the temperature of the magnetic nanoparticle is adjusted to control the magnetic properties thereof such that the properties of the magnetic nanoparticle may be used only when ferromagnetic properties are required, such as in the case of signal amplification in detecting, separating, and delivering biological control agents. Accordingly, the magnetic nanoparticle of the present invention can minimize adverse effects of ferromagnetic properties thereof, and can be used in the effective detection and separation of biological control agents.

The invention relates to the use of the monoclonal antibody NILO1 for the diagnosis, treatment and/or prevention of brain tumors and lesions. Particularly, the invention relates to methods for the diagnosis of brain tumors and brain lesions in which cells marked with said antibody, or with immunologically active fragments thereof, are detected. The invention also relates to the use of said monoclonal antibody, or immunologically active fragments thereof, as a medicament for the treatment and/or prevention of brain tumors and brain lesions. In a preferred embodiment of the invention, the monoclonal antibody NILO1, or its immunologically active fragments, are humanized.

A bone biospecific agent comprises a contrast material core, which is visible using Magnetic Resonance Imaging (MRI) or Computed Tomography (CT). The contrast material core is surrounded by a polymeric shell, which is functionalised with a bone-targeting peptide. In use, the peptide targets the biospecific agent to bone. The bone biospecific agent can be used in diagnostic imaging techniques, such as MRI and CT, and in imaging bone remodelling activities, detecting and treating pathological bone conditions and/or bone repair processes. The invention extends to the diagnosis and/or treatment of bone disease and bone pathologies using the biospecific agents.

The present disclosure generally relates to methods and compositions for obtaining magnetic resonance images of labelled cells. The methods include internalizing a superparamagentic iron oxide nanoparticle within a desired population of cells and then observing the cells through the contrast provided in magnetic resonance imaging. The methods are applicable for in vivo use to monitor desired cells types.

A multimodal PET (positron emission tomography)/MRI (magnetic resonance imaging) contrast agent, a process of synthesizing said PET/MRI contrast agent, and a pharmaceutical formulation comprising said PET/MRI contrast agent are disclosed. The PET/MRI contrast agent comprises a magnetic signal generating core, and a coating portion formed at least partially over a surface of said magnetic signal generating core, wherein the coating portion comprises a plurality of layers, including an inner layer having a functionalized surface, and an outer layer in the form of a radionuclide electrolessly plated layer formed on said functionalized surface.

After a stroke the temporal course of microglial/macrophage activation is biphasic. The initial phase promotes neuroinflammation, while the later phase aids neurovascular recovery. Therefore the dynamics of stroke-induced cerebral microglial/macrophage activation are of substantial interest. In one embodiment, the present invention is directed to the use of novel anti-Iba-1-targeted superparamagnetic FePt nanoparticles immunocelles in conjunction with magnetic resonance imaging (MRI) to measure the spatiotemporal course of the activation of microglia/macrophages in brain tissue at 7, 14, and 28 days post-stroke. Ischemic cerebral lesion areas are identified using T.sub.2-weighted MR images. After injection of FePt nanoparticles as immunocelles, quantitative contrast changes in T.sub.2*-weighted MR images showed that the nanoparticles were taken up solely in brain regions that coincided with areas of microglial/macrophage activation detected by post-mortem immunohistochemistry. There was observed good agreement between the locations of the Fe.sup.+-cells, as shown by Perl's staining for iron, and the Iba-V-microgiia/macrophages, The time course of nanoparticle uptake paralleled the changes of microglial/macrophage activation and phenotypes measured by immunohistochemistry over the four week period post-stroke. Maximum microglial/macrophage activation occurred seven days post-stroke for both measures, and the diminished activation found after two weeks continued to four weeks. The results evidence that nanoparticle-enhanced MRI constitute a novel approach for monitoring the dynamic development of neuroinflammation in living animals during the progression and treatment of stroke and neurodegenerative diseases. The implications and methods for diagnosis and monitoring therapy of stroke and other disease states and conditions are presented.

The present invention relates to magnetic nanostructures as theranostic agents, which provide dual function as diagnostic and therapeutic agents. In particular, the present invention relates to compositions comprising magnetic nanostructures and their use as targeted therapeutic agents for cancers (e.g., medulloblastoma) and Alzheimer's disease and related diseases and conditions.

The present invention relates to Tau-specific antibodies, fragments thereof, and uses thereof. More specifically, the present invention relates to Tau-specific antibodies, fragments thereof, and conjugates thereof with conjugated to a superparamagnetic nanoparticle. The molecules of the present invention may be used in visualizing damage from traumatic brain injury.

Disclosed herein are nanoconstructs comprising a nanoparticle, coated with additional agents such as cationic polymers, stabilizers, targeting molecules, labels, oligonucleotides and small molecules. These constructs may be used to deliver compounds to treat solid tumors and to diagnose cancer and other diseases. Further disclosed are methods of making such compounds and use of such compounds to treat or diagnose human disease.

The present invention relates to a magnetic resonance imaging (MRI) contrast agent, particularly an MRI contrast agent derived from nanoparticle that is porous first metal-doped second metal oxide nanoparticle with a central cavity, and a method for producing the same. The MEI contrast agent made in accordance with the present invention can be used not only as a drug-delivery agent for therapy but also as an MRI contrast agent for diagnosis.