A method for detecting and quantifying of the frequency of T cells to multiple antigenic peptide epitopes comprising: measuring intracellular Ca2+ signaling in individual T cells that are labeled with Ca2+ sensitive fluorophore; wherein said T cells are placed on the glass bottom of a well-covered with antibodies or other capturing proteins specific for non-stimulatory T cells' surface receptors and wherein a peptide antigens are injected into the well and the peptide binds to MHC molecules on the T-cell surface, wherein an increase in the intracellular concentration of Ca2+ in responding T cells leads to rise in intracellular fluorescence that is detected by fluorescent microscope and wherein the response rate of said detected fluorescence can be utilized to determine the quantity of responding T cells and the efficiency of said cells.

Compositions and methods are described for self-assembled polymer materials having at least one of macro, meso, or micro pores.

An optical probe for a bio-sensor selectively conjugated to a target analyte and configured to retro-reflect incident light thereto is disclosed. The optical probe for the bio-sensor includes: a transparent core particle; a total-reflection inducing layer covering a portion of a surface of the core particle, the inducing layer is made of a material having a refractive index lower than a refractive index of the core; a modifying layer formed on the total-reflection inducing layer; and an analyte-sensing substance bound to the modifying layer, the sensing substance is selectively conjugated to the target analyte. This optical probe may serve as an excellent optical probe for both a non-spectral light source and a spectral light source.

The present disclosure relates to biosensors, kits and methods for detecting and/or quantifying lysophosphatidic acid (LPA) in a liquid sample such as a serum sample from a subject. The present disclosure also relates to linker compounds that are useful, for example, in the biosensors, kits and methods of the present disclosure and to methods for preparing a biosensor for detecting and/or quantifying lysophosphatidic acid (LPA) in a liquid sample.

The present invention relates to a method for production of an improved sensor surface for an SPR instrument, comprising forming a self assembled monolayer (SAM) on a surface and attaching ligands and protein resistant groups, preferably polyethylene glycol (PEG), directly to functional groups on said surface. The invention also relates to a sensor surface produced by these methods use thereof in SPR (surface plasmon resonance) assays or interactions.

A method for manufacturing a solid state device with a self-forming nanogap includes patterning a first metallic layer (M1) to form a first electrode on a substrate; depositing a self-assembling monolayer, SAM, layer over and around the first electrode; forming a second metallic layer (M2) in contact with the SAM layer and the substrate; and touchlessly removing parts of the second metallic layer (M2) that is formed directly above the SAM layer, to form a second electrode, and a nanogap between the first electrode and the second electrode.

The present invention relates to a method of preparing a molecular sensor that is specific for a target molecule having a saccharide or peptide region. The method comprises using the target molecule as a template and incubating the template with a receptor to form a template-receptor complex. A molecular scaffold is formed on a surface around the template-receptor complex such that the receptor and at least a portion of the template are embedded in the scaffold, and the template is removed to produce a cavity defined by the scaffold, such that the cavity is complementary to at least a portion of the saccharide or peptide region of the target molecule.

A method for detecting and quantifying of the frequency of T cells to multiple antigenic peptide epitopes comprising: measuring intracellular Ca2+ signaling in individual T cells that are labeled with Ca2+ sensitive fluorophore; wherein said T cells are placed on the glass bottom of a well-covered with antibodies or other capturing proteins specific for non-stimulatory T cells' surface receptors and wherein a peptide antigens are injected into the well and the peptide binds to MHC molecules on the T-cell surface, wherein an increase in the intracellular concentration of Ca2+ in responding T cells leads to rise in intracellular fluorescence that is detected by fluorescent microscope and wherein the response rate of said detected fluorescence can be utilized to determine the quantity of responding T cells and the efficiency of said cells.

Cross-linked amphiphile constructs that form self-assembled monolayers (SAMs) on metal surfaces such as gold surfaces are disclosed. These new SAMs generate well packed and highly oriented monolayer films on gold surfaces. A method for using the SAMs in the fabrication of biomolecule sensors is also disclosed.

Systems for and methods of capturing, detecting, quantifying, and characterizing target moieties that are characterized by having a lipophilic portion of sufficient size and chemical composition whereby the target moiety inserts (or partitions) into a lipid assembly are described. Methods of diagnosing a subject as having a bacterial infection by detecting bacterial pathogen associated molecular pattern (PAMP) molecules in serum are further described.