Abstract: A magnetic nanoparticle includes a magnetic core and a superparamagnetic outer shell, in which the outer shell enhances magnetic properties of the nanoparticle. The enhanced magnetic properties of the magnetic nanoparticle allow for highly sensitive detection as well as diminished non-specific aggregation of nanoparticles.

Abstract: A magnetic device includes a substrate and an array including a plurality of magnetic particles, in which a magnetic dipole moment direction of each magnetic particle in a majority of the magnetic particles in the array alternates with respect to a magnetic dipole direction of a directly adjacent magnetic particle or directly adjacent magnetic particles in the array.

Abstract: Provided herein are compositions containing photoactivatable caged tamoxifen and tamoxifen derivative molecules. Also provided are kits containing one of these compositions and a light source. Also provided are methods of optically inducing nuclear translocation of a fusion protein containing a mammalian estrogen receptor ligand binding domain in a eukaryotic cell and methods of optically inducing recombination in a eukaryotic cell that include contacting a eukaryotic cell with at least one of these compositions. Also provided are methods of treating breast cancer in a subject that include administering a photoactivatable caged tamoxifen or tamoxifen derivative molecule to a subject having breast cancer.

Abstract: This document relates to compounds useful for targeting PARP1. Also provided herein are methods for using such compounds to detect and image cancer cells.

Abstract: This invention relates to methods for diagnosing cancer, e.g., cancer of epithelial origin, by detecting the presence of tumor cells in a sample, based (at least in some embodiments) on the quantification of levels of four biomarkers, MUC1, EGFR, EpCAM, and HER2. In some embodiments, the methods are performed using diagnostic magnetic resonance (DMR), e.g., with a portable relaxometer or MR imager.

Abstract: The present invention provides methods and compositions based on optical sensor conjugates that are useful for detecting reactive oxygen, reactive nitrogen, or both species that are a direct result of inflammation caused by tissue damage.

Abstract: Silent brain ischemia (SBI) or ischemia of other organs can result from an embolism that is introduced into the arterial system during a medical procedure. The application provides a method of administering a FXII inhibitor in a patient receiving a medical procedure and animal models useful for studying ischemia including SBI and ischemia in other organs, and for evaluating candidate therapeutics.

Abstract: A magnetic nanoparticle includes a magnetic core and a superparamagnetic outer shell, in which the outer shell enhances magnetic properties of the nanoparticle. The enhanced magnetic properties of the magnetic nanoparticle allow for highly sensitive detection as well as diminished non-specific aggregation of nanoparticles.

Abstract: Described herein are compositions and methods for cancer cell biomarkers, such as pancreatic ductal adenocarcinoma (PDAC) cell biomarkers, and binding molecules for diagnosis and treatment of cancer, e.g., PDAC. Methods of identifying “accessible” proteomes are disclosed for identifying cancer biomarkers, such as plectin-1, a PDAC biomarker. Additionally, imaging compositions are provided comprising magnetofluorescent nanoparticles conjugated to peptide ligands for identifying PDACs.

Abstract: A magnetic device includes a substrate and an array including a plurality of magnetic particles, in which a magnetic dipole moment direction of each magnetic particle in a majority of the magnetic particles in the array alternates with respect to a magnetic dipole direction of a directly adjacent magnetic particle or directly adjacent magnetic particles in the array.

Abstract: Disclosed herein are compositions and methods for exosome detection with high sensitivity by using a nano-plasmonic sensor. The nano-plasmonic sensor comprises a plurality of nanoapertures suitable for transmission measurements. The detection sensitivity is on the order of 104-fold higher than western blotting and 102-fold higher than enzyme-linked immunosorbent assay (ELISA). A portable imaging system is also disclosed, enabling rapid and high-throughput detection of exosomes. The nano-plasmonic sensor and imaging system can be useful in diagnostics.

Abstract: The present invention provides novel compositions of binding moiety-nanoparticle conjugates, aggregates of these conjugates, and novel methods of using these conjugates, and aggregates. The nanoparticles in these conjugates can be magnetic metal oxides, either monodisperse or polydisperse. Binding moieties can be, e.g., oligonucleotides, polypeptides, or polysaccharides. Oligonucleotide sequences are linked to either non-polymer surface functionalized metal oxides or with functionalized polymers associated with the metal oxides. The novel compositions can be used in assays for detecting target molecules, such as nucleic acids and proteins, in vitro or as magnetic resonance (MR) contrast agents to detect target molecules in living organisms.

Abstract: In one aspect, a system for isolating particles includes a first array of magnets, a second array of magnets arranged generally in parallel with and spaced apart from the first array of magnets, and a micro fluidic device. The micro fluidic device includes a substrate, an inlet arranged on the substrate and configured to receive a fluid sample, an outlet arranged on the substrate, a first region of the substrate including a channel connected to the inlet, where the first region of the substrate is arranged to sandwich the channel between the first and second arrays of magnets.

Abstract: The present disclosure provides compositions and methods based on peptide-detectable agent conjugates that are useful for imaging beta cell mass.

Abstract: The disclosure features systems and methods for measuring and diagnosing target constituents bound to labeling particles in a sample. The systems include a radiation source, a sample holder, a detector configured to obtain one or more diffraction patterns of the sample each including information corresponding to optical properties of sample constituents, and an electronic processor configured to, for each of the one or more diffraction patterns: (a) analyze the diffraction pattern to obtain amplitude information and phase information corresponding to the sample constituents; (b) identify one or more particle-bound target sample constituents based on at least one of the amplitude information and the phase information; and (c) determine an amount of at least one of the particle-bound target sample constituents in the sample based on at least one of the amplitude information and the phase information.

Abstract: Described herein are compositions and methods for cancer cell biomarkers, such as pancreatic ductal adenocarcinoma (PDAC) cell biomarkers, and binding molecules for diagnosis and treatment of cancer, e.g., PDAC. Methods of identifying “accessible” proteomes are disclosed for identifying cancer biomarkers, such as plectin-1, a PDAC biomarker. Additionally, imaging compositions are provided comprising magnetofluorescent nanoparticles conjugated to peptide ligands for identifying PDACs.

Abstract: This present application relates to fluorescent tetrazine-containing compounds consisting of a single pi-system. For example, a compound of Formula (I): or a salt thereof, wherein: F is a fluorophore, L is a conjugated linker, and Tz is a substituted or unsubstituted tetrazine; wherein the linker bridges the Tz and F moieties in a single conjugated pi-system. Also provided herein are methods of using the compounds provided herein for biomedical imaging.

Abstract: The present disclosure provides compositions and methods based on peptide-detectable agent conjugates that are useful for imaging beta cell mass.

Abstract: This invention is in the field of labeled peptide construction for medical treatment and analysis. The invention relates to synthetic labeled peptide compositions, methods of synthesis, and methods of use for the synthetic labeled peptide compositions for medical treatment, imaging, and research purposes.

Abstract: A magnetic nanoparticle includes a magnetic core and a superparamagnetic outer shell, in which the outer shell enhances magnetic properties of the nanoparticle. The enhanced magnetic properties of the magnetic nanoparticle allow for highly sensitive detection as well as diminished non-specific aggregation of nanoparticles.