The invention features a substrate and compositions, kits, devices, and methods employing the substrate that produces an isolated population of cells from a general population. The isolated population is enriched for one or more target populations. Substrate is can be liquefied and allows recovery of unlabeled, viable, and functional cells.

Systems, methods, and devices for selective capture and release of target particles, e.g., living cells, from liquid samples, e.g., blood, are provided. The particle capture systems include a substrate; a first layer of gelatin bound to the substrate by physical adsorption, wherein the gelatin is functionalized with a plurality of first members of a binding pair; a second layer of gelatin wherein the gelatin is functionalized with a plurality of the first members of the binding pair and the second layer is bound to the first layer via a plurality of second members of the binding pair that are associated with the first members of the binding pair on both the first and the second layers; and a plurality of nanostructures bound to the second members of the binding pair and to one or more particle-binding moieties that selectively bind to the target particles.

Systems, methods, and devices for selective capture and release of target particles, e.g., living cells, from liquid samples, e.g., blood, are provided. The particle capture systems include a substrate; a first layer of gelatin bound to the substrate by physical adsorption, wherein the gelatin is functionalized with a plurality of first members of a binding pair; a second layer of gelatin wherein the gelatin is functionalized with a plurality of the first members of the binding pair and the second layer is bound to the first layer via a plurality of second members of the binding pair that are associated with the first members of the binding pair on both the first and the second layers; and a plurality of nanostructures bound to the second members of the binding pair and to one or more particle-binding moieties that selectively bind to the target particles.

The present invention relates to diagnostic test and technology. In particular, the present invention relates to a method for determining an analyte suspected to be present in a sample comprising contacting said sample with a sensor element comprising i) an anchor layer which is present on a solid support, ii) a first binding agent which is capable of specifically binding to the analyte, which is anchored in the anchor layer and which comprises at least one detectable label, and iii) a second binding agent which is capable of specifically binding to the analyte when bound to the first binding agent and which is immobilized on the solid support, for a time and under conditions which allow for specific binding of the analyte suspected to be present in the sample to the first binding agent and specific binding of the second binding agent to the analyte bound to the first binding agent and detecting the formation of the complex of first binding agent, analyte and second binding agent whereby the analyte is determined. Moreover, provided is a device for determining an analyte suspected to be present in a sample and the use thereof for determining an analyte suspected to be present in a sample in said sample. Moreover, the present invention contemplates a kit for determining an analyte suspected to be present in a sample.

The present invention relates to diagnostic test and technology. In particular, the present invention relates to a method for determining an analyte suspected to be present in a sample comprising contacting said sample with a sensor element comprising i) an anchor layer which is present on a solid support, ii) a first binding agent which is capable of specifically binding to the analyte, which is anchored in the anchor layer and which comprises at least one detectable label, and iii) a second binding agent which is capable of specifically binding to the analyte when bound to the first binding agent and which is immobilized on the solid support, for a time and under conditions which allow for specific binding of the analyte suspected to be present in the sample to the first binding agent and specific binding of the second binding agent to the analyte bound to the first binding agent and detecting the formation of the complex of first binding agent, analyte and second binding agent whereby the analyte is determined. Moreover, provided is a device for determining an analyte suspected to be present in a sample and the use thereof for determining an analyte suspected to be present in a sample in said sample. Moreover, the present invention contemplates a kit for determining an analyte suspected to be present in a sample.

The present invention relates to a colorimetric biosensor, preparation method thereof, and antibiotic susceptibility testing method using the same, and more specifically, in the present invention, it is possible to prepare a colorimetric biosensor comprising a porous hydrogel structure including polydiacetylene and a hydrogel polymer (alginate, PEG-DA, etc.); and a microbial nutrient source, and it may be applied to a colorimetric biosensor for detecting microorganisms or a method for testing antibiotic susceptibility of microorganisms for allowing in real-time measurement and exhibiting excellent sensitivity using the colorimetric biosensor.

The invention provides a method for screening for and detection of solid organ graft rejection in a subject that comprises assaying a patient sample of plasma, serum or blood from the subject for a protein marker identified herein. An elevated or reduced amount of marker present in the patient sample compared to a control sample is indicative of rejection, and identifies subjects in need of biopsy or modified treatment. The method can be used to screen for patients in danger of transplant rejection without having to undergo more costly, risky and invasive biopsy procedures.

The invention provides a method for screening for and detection of solid organ graft rejection in a subject that comprises assaying a patient sample of plasma, serum or blood from the subject for a protein marker identified herein. An elevated or reduced amount of marker present in the patient sample compared to a control sample is indicative of rejection, and identifies subjects in need of biopsy or modified treatment. The method can be used to screen for patients in danger of transplant rejection without having to undergo more costly, risky and invasive biopsy procedures.

A processing and detection system for detecting presence of at least one gluten protein in a food sample comprises a food processor including: a reservoir containing a process liquid for processing the food sample; a body that comprises a chamber configured to receive the food sample; and a pressing surface configured to press on the reservoir to cause the process liquid to exit the reservoir and mix with the food sample, thereby generating a processed food liquid; and an exit port configured to conduct the processed food liquid out of the food processor; and a cartridge including: at least one sensor configured to receive the processed food liquid and to generate an electrical signal in response to interaction with the at least one gluten protein in the processed food liquid, and an analyzer in electrical communication with the at least one sensor for detecting the electrical signal and determining the presence of the at least one gluten protein in the food sample based on the detected electrical signal.

A processing and detection system for detecting presence of at least one gluten protein in a food sample comprises a food processor including: a reservoir containing a process liquid for processing the food sample; a body that comprises a chamber configured to receive the food sample; and a pressing surface configured to press on the reservoir to cause the process liquid to exit the reservoir and mix with the food sample, thereby generating a processed food liquid; and an exit port configured to conduct the processed food liquid out of the food processor; and a cartridge including: at least one sensor configured to receive the processed food liquid and to generate an electrical signal in response to interaction with the at least one gluten protein in the processed food liquid, and an analyzer in electrical communication with the at least one sensor for detecting the electrical signal and determining the presence of the at least one gluten protein in the food sample based on the detected electrical signal.