Digital counting of individual molecules by stochastic attachment of diverse labels
DCFirst Claim
1. A composition comprising a plurality of oligonucleotide labels, wherein each oligonucleotide label of the plurality of oligonucleotide labels comprises an oligo dT sequence, a sequencing primer binding site, a common sequence that is the same for all oligonucleotide labels of the plurality of oligonucleotide labels, and a unique label tag sequence, wherein the unique label tag sequence is selected from a set of at least m different label tag sequences.
4 Assignments
Litigations
0 Petitions
Accused Products
Abstract
Compositions, methods and kits are disclosed for high-sensitivity single molecule digital counting by the stochastic labeling of a collection of identical molecules by attachment of a diverse set of labels. Each copy of a molecule randomly chooses from a non-depleting reservoir of diverse labels. Detection may be by a variety of methods including hybridization based or sequencing. Molecules that would otherwise be identical in information content can be labeled to create a separately detectable product that is unique or approximately unique in a collection. This stochastic transformation relaxes the problem of counting molecules from one of locating and identifying identical molecules to a series of binary digital questions detecting whether preprogrammed labels are present. The methods may be used, for example, to estimate the number of separate molecules of a given type or types within a sample.
-
Citations
18 Claims
- 1. A composition comprising a plurality of oligonucleotide labels, wherein each oligonucleotide label of the plurality of oligonucleotide labels comprises an oligo dT sequence, a sequencing primer binding site, a common sequence that is the same for all oligonucleotide labels of the plurality of oligonucleotide labels, and a unique label tag sequence, wherein the unique label tag sequence is selected from a set of at least m different label tag sequences.
- 14. A kit comprising a plurality of oligonucleotide labels, wherein each oligonucleotide label of the plurality of oligonucleotide labels comprises an oligo dT sequence, a sequencing primer binding site, a common sequence that is the same for all oligonucleotide labels of the plurality of oligonucleotide labels, and a unique label tag sequence, wherein the unique label tag sequence is selected from a set of at least m different label tag sequences.
Specification