ULTRAFAST SEQUENCING OF BIOLOGICAL POLYMERS USING A LABELED NANOPORE
First Claim
1. A method for sequencing a polymer comprising:
- exciting a donor label attached to a nanopore;
translocating a polymer through the nanopore, wherein the polymer comprises a monomer labeled with an acceptor label;
transferring energy from the excited donor label to the acceptor label of the monomer after the labeled monomer passes through and exits the nanopore;
detecting the energy emitted by the acceptor label as a result of the energy transfer, wherein the energy emitted by the acceptor label is associated with a single monomer; and
deducing the polymer sequence based on the detection of the emitted energy from the acceptor label and identification of the monomer.
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Accused Products
Abstract
Methods and systems for sequencing a biological molecule or polymer, e.g., a nucleic acid, are provided. One or more donor labels, which are attached to a pore or nanopore, may be illuminated or otherwise excited. A polymer having a monomer labeled with one or more acceptor labels, may be translocated through the pore. Either before, after or while the labeled monomer of the polymer passes through, exits or enters the pore, energy may be transferred from the excited donor label to the acceptor label of the monomer. As a result of the energy transfer, the acceptor label emits energy, and the emitted energy is detected in order to identify the labeled monomer of the translocated polymer and to thereby sequence the polymer.
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Citations
16 Claims
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1. A method for sequencing a polymer comprising:
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exciting a donor label attached to a nanopore; translocating a polymer through the nanopore, wherein the polymer comprises a monomer labeled with an acceptor label; transferring energy from the excited donor label to the acceptor label of the monomer after the labeled monomer passes through and exits the nanopore; detecting the energy emitted by the acceptor label as a result of the energy transfer, wherein the energy emitted by the acceptor label is associated with a single monomer; and deducing the polymer sequence based on the detection of the emitted energy from the acceptor label and identification of the monomer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for sequencing a polymer comprising:
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a nanopore membrane assembly having a donor labeled nanopore which spans a lipid bilayer membrane, the nanopore membrane assembly having a negatively charged side and a positively charged side; an aqueous buffer solution surrounding the nanopore membrane assembly; a negative electrode positioned on the negatively charged (cis) side of the nanopore membrane assembly; a positive electrode positioned on the positively charged (trans) side of the nanopore membrane assembly; a polymer comprising a monomer having an acceptor label, wherein the polymer is loaded into a port positioned on the negatively charged side of the nanopore membrane assembly; an energy source for exciting the nanopore label; an electric field applied by the electrodes to force the labeled polymer to translocate through the nanopore from the negatively charged side to the positively charged side in a single file, wherein energy is transferred from the nanopore label to the monomer label after the labeled monomer passes through and exits the nanopore and comes in proximity to the nanopore label; an optical detector for detecting energy emitted from the monomer label as a result of the transfer of energy from the nanopore label to the monomer label, wherein the emitted energy is associated with a single monomer and facilitates the sequencing of the polymer. - View Dependent Claims (11, 12, 13, 14)
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15. A method for sequencing a polymer comprising:
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exciting a donor label attached to a nanopore; translocating a polymer through the nanopore, wherein the polymer comprises a monomer labeled with a quenching label; quenching energy emission of the excited donor label with the quenching label of the monomer after the labeled monomer passes through and exits the nanopore; detecting a change in photon emission by the donor label as a result of quenching the donor label with the quenching label, wherein a degree of photon emission change is associated with a single monomer of the polymer; and deducing the polymer sequence based on the detection of the change in photon emission by the donor label and identification of the monomer. - View Dependent Claims (16)
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Specification