Methods and compositions for assaying a sample for an aggregant
DC CAFCFirst Claim
1. A method of assaying a sample for an aggregant, the method comprising:
- (a) combining the sample with an aggregation sensor comprising(i) a polymer comprising a plurality of first optically active units forming a conjugated system, having a first absorption wavelength at which the first optically active units absorb light to form an excited state that can emit light of a first emission wavelength, and a plurality of solubilizing functionalities; and
(ii) one or more second optically active units that can receive energy from the excited state of the first optically active unit;
wherein said aggregation sensor comprises at least three first optically active units per second optically active unit and the second optically active unit is grafted to the conjugated system;
(b) contacting the sample with light of the first absorption wavelength; and
(c) detecting the optical properties of the aggregation sensor to assay the sample for the aggregant.
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Abstract
This invention relates to an aggregation sensor useful for the detection and analysis of aggregants in a sample, and methods, articles and compositions relating to such a sensor. The sensor comprises first and second optically active units, where energy may be transferred from an excited state of the first optically active unit to the second optically active unit. The second optically active unit is present in a lesser amount, but its relative concentration is increased upon aggregation, increasing its absorption of energy from the first optically active units. This increase in energy transfer can be detected in variety of formats to produce an aggregation sensing system for various aggregants, including for quantitation. Other variations of the inventions are described further herein.
87 Citations
29 Claims
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1. A method of assaying a sample for an aggregant, the method comprising:
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(a) combining the sample with an aggregation sensor comprising (i) a polymer comprising a plurality of first optically active units forming a conjugated system, having a first absorption wavelength at which the first optically active units absorb light to form an excited state that can emit light of a first emission wavelength, and a plurality of solubilizing functionalities; and (ii) one or more second optically active units that can receive energy from the excited state of the first optically active unit; wherein said aggregation sensor comprises at least three first optically active units per second optically active unit and the second optically active unit is grafted to the conjugated system; (b) contacting the sample with light of the first absorption wavelength; and (c) detecting the optical properties of the aggregation sensor to assay the sample for the aggregant. - 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