In vivo fluorescence sensors, systems, and related methods operating in conjunction with fluorescent analytes
First Claim
1. A method for determining in vivo fluorescent activity in a subject, comprising:
- positioning at least one sensor in tissue in a region of interest in the body;
administering a fluorescent analyte to a subject, the fluorescent analyte including at least one of a fluorescently pre-labeled analyte, a naturally fluorescent analyte and an analyte that exhibits fluorescence when internally administered to the subject, wherein the fluorescent analyte is administered from a source other than the at least one sensor;
emitting at least one excitation light signal from the at least one sensor to localized tissue proximate the at least one sensor, wherein the sensor projects the at least one excitation light signal outside the sensor at a distance sufficient to probe fluorescent activity at locations away from the sensor of several millimeters, wherein the excitation light signal has a wavelength that is between about 400 nm to about 900 nm;
detecting in vivo from the at least one sensor a signal corresponding to fluorescence in the subject responsive to the administering and emitting steps;
relaying the signal to a location external of the subject'"'"'s body;
electronically monitoring the relayed signal over time to electronically generate a time-dependent measurement profile of fluorescence in the localized tissue; and
determining in vivo fluorescent activity of the subject based on the monitoring step.
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Accused Products
Abstract
Methods, systems, devices and computer program product include: (i) administering a fluorescent analyte to a subject; (ii) repetitively emitting excitation light from an implanted sensor over a desired monitoring period; (iii) detecting fluorescence intensity in response to the excitation light using the implanted sensor that outputs the excitation light; and (iv) using data associated with the detected fluorescence intensity to perform at least one of: (a) calculate the concentration or dose of the analyte received proximate to the implanted sensor site; (b) evaluate the pharmacodynamic or pharmacokinetic activity of the fluorescent analyte; (c) confirm Ab attachment to a tumor site; (d) monitor a non-target site to confirm it is not unduly affected by a therapy; (e) monitor for changes in cellular properties; (f) use the calculated dose or concentration data to adjust or customize a therapeutic amount of the analyte administered to the subject; (g) confirm micelle concentration at a target site and then stimulate toxin release based on the confirmation; and (h) monitor for the expression of a protein produced from a gene therapy modification.
In particular embodiments, the intensity of the excitation signals emitted to the localized tissue can be varied in a predetermined manner to generate optical profiling data of the response of the tissue proximate the sensor.
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Citations
29 Claims
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1. A method for determining in vivo fluorescent activity in a subject, comprising:
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positioning at least one sensor in tissue in a region of interest in the body; administering a fluorescent analyte to a subject, the fluorescent analyte including at least one of a fluorescently pre-labeled analyte, a naturally fluorescent analyte and an analyte that exhibits fluorescence when internally administered to the subject, wherein the fluorescent analyte is administered from a source other than the at least one sensor; emitting at least one excitation light signal from the at least one sensor to localized tissue proximate the at least one sensor, wherein the sensor projects the at least one excitation light signal outside the sensor at a distance sufficient to probe fluorescent activity at locations away from the sensor of several millimeters, wherein the excitation light signal has a wavelength that is between about 400 nm to about 900 nm; detecting in vivo from the at least one sensor a signal corresponding to fluorescence in the subject responsive to the administering and emitting steps; relaying the signal to a location external of the subject'"'"'s body; electronically monitoring the relayed signal over time to electronically generate a time-dependent measurement profile of fluorescence in the localized tissue; and determining in vivo fluorescent activity of the subject based on the monitoring step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification