Other

General Electric Company

Thomas Pirrie Treynor

Anup Sood

Michael John Gerdes

Sean Richard Dinn

Zhengyu Pang

Methods for probing multiple targets in a biological sample are provided. The methods include the steps of providing a sample containing multiple targets, binding at least one probe having a binder coupled to an enzyme to one or more target present in the sample, and reacting the bound probe with an enzyme substrate coupled to a fluorescent signal generator. The methods include the steps of observing a signal from the fluorescent signal generator and applying to the sample a solution containing an oxidizing agent that substantially inactivates both the fluorescent signal generator and the enzyme. The methods further include the steps of binding at least one probe having a binder coupled to an enzyme to one or more target present in the sample of step, reacting the bound probe with an enzyme substrate coupled to a fluorescent signal generator; and observing a signal from the fluorescent signal generator. The methods disclosed herein also provide for multiple iterations of binding, observing, and oxidizing for deriving information about multiple targets in a single sample. An associated kit is also provided.

Sequential analysis of biological samples

Methods of activating an apo-peroxidase are provided. The methods include the steps of providing a solution comprising an apo-peroxidase and a heme choline ester, hydrolyzing the heme choline ester with a choline esterase, and converting the apo-peroxidase to active peroxidase. The methods disclosed herein also provide for detecting the presence of an analyte in a sample. The methods include providing a binder capable of specifically binding the analyte wherein the binder is attached to a solid surface, applying the sample to the solid surface under conditions that permit binder-analyte binding, adding a choline esterase-conjugated binder that binds to the analyte, adding an apo-peroxidase, a heme choline ester, a peroxide, and a peroxide-activated signal generator, and detecting the signal produced by the peroxide-activated signal generator. An associated kit and components are also provided.

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Clifton Park, NY, United States of America

Thomas Pirrie Treynor