Granted Patent
B2
US 12,385,085 · App. 18/500,680 · Granted Aug 12, 2025
Preparation of templates for methylation analysis
Inventors:
Niall Anthony Gormley (Cambridge, GB); Andreas Gnirke (Cambridge, MA); David Jaffe (Cambridge, MA); Harris Nusbaum (Cambridge, MA)
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Abstract
The invention relates to a method of preparing and using a library of template polynucleotides suitable for use as templates in solid-phase nucleic acid amplification and sequencing reactions to determine the methylation status of the cytosine bases in the library. In particular, the invention relates to a method of preparing and analysing a library of template polynucleotides suitable for methylation analysis.
Claims (10)
1. A polynucleotide composition, comprising:
adaptor-ligated double stranded nucleic acid target fragments, an individual adaptor-ligated double stranded nucleic acid target fragment of the adaptor-ligated double stranded nucleic acid target fragments comprising:
a first adaptor polynucleotide and a second adaptor polynucleotide, wherein the first adaptor polynucleotide and the second adaptor polynucleotide each comprise a plurality of consecutive nucleotides, wherein all cytosine bases in the first adaptor polynucleotide and the second adaptor polynucleotide are methylated, and wherein first adaptor polynucleotide and the second adaptor polynucleotide each comprise a region of double stranded nucleic acids and at least one region of single stranded nucleic acids, the region of single-stranded nucleic acids forming a forked end, wherein the at least one region of single stranded nucleic acids comprises the plurality of consecutive nucleotides and wherein the plurality of consecutive nucleotides is complementary to the last 21 consecutive nucleotides of SEQ ID NO: 6; and
a double-stranded target polynucleotide disposed between the first adaptor polynucleotide and the second adaptor polynucleotide.
2. The polynucleotide composition of claim 1 , wherein the double-stranded target polynucleotide is derived from genomic DNA.
3. The polynucleotide composition of claim 1 , wherein the double-stranded target polynucleotide comprises one or more methylated cytosines.
4. The polynucleotide composition of claim 1 , wherein the double-stranded target polynucleotide comprises one or more uracils.
5. The polynucleotide composition of claim 1 , comprising an amplification primer hybridized to the at least one region of single stranded nucleic acids.
6. The polynucleotide composition of claim 5 , wherein the amplification primer comprises a region that extends beyond a 5′ end of the at least one region of single stranded nucleic acids.
7. The polynucleotide composition of claim 1 , wherein one or both of the first adaptor polynucleotide or the second adaptor polynucleotide comprises a biotin group.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 2, 2023
From: GORMLEY, NIALL ANTHONY
To: ILLUMINA CAMBRIDGE LIMTED
Reel/Frame 065438/0521 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 2, 2023
From: GNIRKE, ANDREAS; JAFFE, DAVID; NUSBAUM, HARRIS
To: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Reel/Frame 065438/0731 →
Continuity (5)
Provisional Application
60900313
· Feb 7, 2007
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