University of Missouri

Kevin Gillis

Timothy E Glass

Kenneth Hettie

Jaya Ghosh

Jessica L Klockow

Jia Yao

The invention is provides for a variety of fluorescence sensing compounds characterized generally as having a coumarin-3-aldehyde scaffold with a pendant aryl moiety at the C4-position of the scaffold. The further provides a method for detecting primary amines in a biological sample using said compounds. Especially, for the selective labeling and imaging of catecholamines in live and fixed secretory cells.

Fluorescent chemical sensor for biological amines

The invention is directed to dual-analyte fluorescent chemosensors for the direct detection and visualization (imaging) of neurotransmitters released upon exocytosis. The inventive sensor exploits the high concentration of neurotransmitters (e.g., glutamate, norepinephrine, and dopamine) and capitalizes upon the pH gradient between the vesicle and synaptic cleft.

pH-sensitive fluorescent sensors for biological amines

Methods and apparati for performing measurements of electrical signals in a multi-compartmented fluidic array format where the signal to noise ratio is improved are disclosed.

Addressable electrode arrays in multiple fluidic compartments and uses thereof

Methods for stimulating exocytosis from a cell are provided where the same electrochemical microelectrode is used to electroporate an adjacent cell and then measure quantal exocytosis from the adjacent cell. Also provided are methods for stimulating and measuring exocytosis from a select cell population arrayed on a chip comprising addressable electrodes. Calcium independent stimulation of exocytosis with inorganic anions such as chloride ions is also provided. These methods can provide for specific stimulation of a desired subset of cells without exposing other nearby cells to the stimulus.

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Columbia, MO, United States of America

Kevin Gillis