Method of sequence determination using sequence tags
First Claim
1. A method of determining clonotypes of an immune repertoire, the method comprising the steps:
- (a) attaching sequence tags to molecules of recombined nucleic acids of I-cell receptor genes or immunoglobulin genes of T-cells and/or B-cells from a sample comprising cells and/or B-cells to form tag-molecule conjugates, wherein substantially every molecule of the tag-molecule conjugates has a unique sequence tag;
(b) amplifying the tag-molecule conjugates;
(c) sequencing by synthesis the tag-molecule conjugates to produce sequence reads comprising at least 1000 clonotypes per run, wherein each sequence read comprises a sequence tag portion and a clonotype portion; and
(d) aligning like sequence tag portions of the sequence reads to determine a clonotype sequence from corresponding clonotype portions of the aligned sequence reads.
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Abstract
The invention is directed to the use of sequence tags to improve sequence determination of amplicons of related sequences, particularly large and complex amplicons, such as those comprising recombined nucleic acids encoding immune receptor molecules. In one aspect, sequence reads having the same sequence tags are aligned after which final base calls are determined from a (possibly weighted) average base call from sequence read base calls at each position. Similarly, in another aspect, sequence reads comprising series of incorporation signals are aligned by common sequence tags and base calls in homopolymer regions are made as a function incorporation signal values at each “flow” position.
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Citations
22 Claims
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1. A method of determining clonotypes of an immune repertoire, the method comprising the steps:
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(a) attaching sequence tags to molecules of recombined nucleic acids of I-cell receptor genes or immunoglobulin genes of T-cells and/or B-cells from a sample comprising cells and/or B-cells to form tag-molecule conjugates, wherein substantially every molecule of the tag-molecule conjugates has a unique sequence tag; (b) amplifying the tag-molecule conjugates; (c) sequencing by synthesis the tag-molecule conjugates to produce sequence reads comprising at least 1000 clonotypes per run, wherein each sequence read comprises a sequence tag portion and a clonotype portion; and (d) aligning like sequence tag portions of the sequence reads to determine a clonotype sequence from corresponding clonotype portions of the aligned sequence reads. - View Dependent Claims (2, 3, 4, 5, 6, 10)
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7. A method of determining clonotypes of an immune repertoire, the method comprising the steps:
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(a) labeling by sampling molecules from T-cells and/or B-cells from a sample comprising T-cells and/or B-cells to form tag-molecule conjugates, wherein each tag has a sequence and each molecule comprises a clonotype comprising a recombined nucleic acid from a T-cell receptor gene or an immunoglobulin gene; (b) sequencing by synthesis the tag-molecule conjugates to produce sequence reads comprising at least 1000 clonotypes per run, wherein each sequence read comprises a sequence tag portion and a clonotype portion; (c) grouping the sequence reads having like tags to align sequence reads from like clonotypes; and (d) determining a nucleotide sequence of each clonotype from the aligned sequence reads of like tags. - View Dependent Claims (8, 9)
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11. A method of determining nucleotide sequences of one or more polynucleotides in one or more sequencing-by-synthesis reactions, the method comprising the steps:
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(a) attaching a sequence tag to each of the one or more polynucleotides to form tag-polynucleotide conjugates, wherein substantially every polynucleotide of the tag-polynucleotide conjugates has a unique sequence tag; (b) amplifying the tag-polynucleotide conjugates; (c) sequencing by synthesis amplified tag-polynucleotide conjugates to produce sequence reads comprising at least 1000 clonotypes per run, wherein sequencing by synthesis comprises exposing templates of amplified tag-polynucleotide conjugates to at least one dNTP flow to produce a sequence of incorporation signals for each template; (d) aligning sequences of incorporation signals from like tag-polynucleotide conjugates by their sequence tags; and (e) determining for each tag-polynucleotide conjugate having the same sequence tag a number of nucleotide incorporations for each dNTP flow as a function of measured incorporation signals for each such dNTP flow. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification