Molecular identity tags and uses thereof in identifying intermolecular ligation products
First Claim
1. A method of identifying intermolecular ligation products, comprising:
- marking linear target nucleic acids with multiple, mutually distinguishable pairs of molecular identity tags to yield marked target nucleic acids, wherein the marking comprises marking terminal regions of each linear target nucleic acid with one of the pairs of molecular identity tags, wherein a first terminal region of each target nucleic acid is marked with a first member of the one of the pairs and a second terminal region of each target nucleic acid is marked with a second member of the one of the pairs;
joining terminal ends of the marked target nucleic acids or products of the marked target nucleic acids to yield marked nucleic acid products, each marked nucleic acid product comprising two of the molecular identity tags juxtaposed across the joined terminal ends, wherein the marked nucleic acid products include one or more marked nucleic acid products comprising only juxtaposed paired molecular identity tags and one or more marked nucleic acid products comprising juxtaposed unpaired molecular identity tags, wherein any marked nucleic acid product comprising juxtaposed unpaired molecular identity tags constitutes an intermolecular nucleic acid product; and
parsing the one or more marked nucleic acid products comprising only juxtaposed paired molecular identity tags, or products thereof, from the one or more marked nucleic acid products comprising juxtaposed unpaired molecular identity tags, or products thereof.
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Abstract
Molecular identity tags and methods of marking target nucleic acids with molecular identity tags for identifying intermolecular ligation products. Terminal regions of linear target nucleic acids are marked with pairs of distinguishable molecular identity tags. Each linear target nucleic acid is marked with only one distinguishable pair. The terminal ends of the marked target nucleic acids are joined to generate circularized nucleic acids, thereby juxtaposing two molecular identity tags across the joined terminal ends. Circularized nucleic acids or downstream products thereof comprising juxtaposed unpaired molecular identity tags constitute intermolecular nucleic acid products that can be identified and eliminated from subsequent analyses of the nucleic acids. The molecular identity tags may comprise physically linked and non-physically linked pairs. Physically linked molecular identity tags designed for production and analysis of mate-pair libraries with next-generation sequencing platforms are provided.
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Citations
19 Claims
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1. A method of identifying intermolecular ligation products, comprising:
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marking linear target nucleic acids with multiple, mutually distinguishable pairs of molecular identity tags to yield marked target nucleic acids, wherein the marking comprises marking terminal regions of each linear target nucleic acid with one of the pairs of molecular identity tags, wherein a first terminal region of each target nucleic acid is marked with a first member of the one of the pairs and a second terminal region of each target nucleic acid is marked with a second member of the one of the pairs; joining terminal ends of the marked target nucleic acids or products of the marked target nucleic acids to yield marked nucleic acid products, each marked nucleic acid product comprising two of the molecular identity tags juxtaposed across the joined terminal ends, wherein the marked nucleic acid products include one or more marked nucleic acid products comprising only juxtaposed paired molecular identity tags and one or more marked nucleic acid products comprising juxtaposed unpaired molecular identity tags, wherein any marked nucleic acid product comprising juxtaposed unpaired molecular identity tags constitutes an intermolecular nucleic acid product; and parsing the one or more marked nucleic acid products comprising only juxtaposed paired molecular identity tags, or products thereof, from the one or more marked nucleic acid products comprising juxtaposed unpaired molecular identity tags, or products thereof. - View Dependent Claims (2, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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3. A method of identifying intermolecular ligation products, comprising:
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marking linear target nucleic acids with multiple, mutually distinguishable pairs of molecular identity tags to yield marked target nucleic acids, wherein the marking comprises marking terminal regions of each linear target nucleic acid with one of the pairs of molecular identity tags, wherein a first terminal region of each target nucleic acid is marked with a first member of the one of the pairs and a second terminal region of each target nucleic acid is marked with a second member of the one of the pairs; joining terminal ends of the marked target nucleic acids or products of the marked target nucleic acids to yield circularized, marked nucleic acid products, each marked nucleic acid product comprising two of the molecular identity tags juxtaposed across the joined terminal ends, wherein any marked nucleic acid product comprising juxtaposed unpaired molecular identity tags constitutes an intermolecular nucleic acid product; linearizing the circularized, marked nucleic acid products to yield one or more linearized, marked nucleic acids comprising only juxtaposed paired molecular identity tags and one or more linearized, marked nucleic acids comprising juxtaposed unpaired molecular identity tags; and parsing the one or more linearized, marked nucleic acids comprising only juxtaposed paired molecular identity tags from the one or more linearized, marked nucleic acids comprising juxtaposed unpaired molecular identity tags. - View Dependent Claims (4)
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5. A method of identifying intermolecular ligation products, comprising:
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marking linear target nucleic acids with multiple, mutually distinguishable pairs of molecular identity tags to yield marked target nucleic acids, wherein the marking comprises marking terminal regions of each linear target nucleic acid with one of the pairs of molecular identity tags, wherein a first terminal region of each target nucleic acid is marked with a first member of the one of the pairs and a second terminal region of each target nucleic acid is marked with a second member of the one of the pairs; and joining terminal ends of the marked target nucleic acids or products of the marked target nucleic acids to yield marked nucleic acid products, each marked nucleic acid product comprising two of the molecular identity tags juxtaposed across the joined terminal ends, wherein any marked nucleic acid product comprising juxtaposed unpaired molecular identity tags constitutes an intermolecular nucleic acid product, wherein; each pair of molecular identity tags is physically linked; the marking comprises marking the terminal regions of each linear target nucleic acid with one of the physically linked pairs of molecular identity tags to yield end-coupled, marked target nucleic acids, wherein the physically linked pairs of molecular identity tags are physically linked prior to and during the marking; the method further comprises excising a target nucleic acid portion from each of the end-coupled, marked target nucleic acids to yield sequence-excised, marked target nucleic acids; and the joining comprises circularizing the sequence-excised, marked target nucleic acids to yield the marked nucleic acid products. - View Dependent Claims (6)
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Specification