US 4,942,124 AGranted

Multiplex sequencing

AssigneePresident and Fellows of Harvard College

InventorGeorge M. Church

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Abstract

This invention features vectors and a method for sequencing DNA. The method includes the steps of: (a) ligating the DNA into a vector comprising a tag sequence, the tag sequence includes at least 15 bases, wherein the tag sequence will not hybridize to the DNA under stringent hybridization conditions and is unique in the vector, to form a hybrid vector, (b) treating the hybrid vector in a plurality of vessels to produce fragments comprising the tag sequence, wherein the fragments differ in length and terminate at a fixed known base or bases, wherein the fixed known base or bases differs in each vessel, (c) separating the fragments from each vessel according to their size, (d) hybridizing the fragments with an oligonucleotide able to hybridize specifically with the tag sequence, and (e) detecting the pattern of hybridization of the tag sequence, wherein the pattern reflects the nucleotide sequence of the DNA.

Claims12

Dependent claims

A method for sequencing a DNA specimen comprising:

(a) providing a set of at least two vectors, each vector of said set comprising a cloning site and including at least one tag sequence at a position within 50 bases of said cloning site, each tag sequence in each vector differing from each tag sequence of every other vector of said set, and each being incapable of hybridizing to said DNA specimen under stringent conditions,
(b) providing a first and a second DNA sequence from said DNA specimen, said first DNA sequence being different from said second DNA sequence,
(c) ligating said first DNA sequence into the cloning site of one of said vectors, and said second DNA sequence into the cloning side of a second of said vectors, thereby producing a plurality of hybrid vectors,
(d) providing a pool of said hybrid vectors,
(e) treating separate aliquots of said pool in a plurality of vessels to produce fragments comprising said tag sequence, wherein said fragments in each vessel differ in length from each other and all terminate at a fixed known base or bases, wherein said fixed known base or bases in one of said vessels differ from said fixed known base or bases in another of said vessels,
(f) separating said fragments comprising tag sequences from each said vessel according to their size,
(g) hybridizing the separated fragments of step (e) under stringent conditions with a first oligonucleotide probe able to hybridize specifically with one of said tag sequences, and
(h) detecting the pattern of hybridization wherein said pattern reflects the nucleotide sequence of said DNA specimen.

5 more elements

A method for simultaneously sequencing multiple DNA molecules comprising,

(a) providing a pool of individually different DNA tag sequences, each tag sequence in said pool being foreign to, and incapable of hybridizing under stringent conditions to, any of said DNA molecules to be sequenced;
(b) from separate aliquots of said pool of tag sequences, generating a plurality of sets of hybrid DNA fragments in separate vessels, said hybrid fragments in each vessel differing in length from one another and terminating in a fixed known base or bases, wherein said fixed known base or bases in one of said vessels differ from said fixed known base or bases in another of said vessels;
(i) each of said fragments comprising at least one of said tag sequences and at least part of one and only one of said DNA molecules to be sequenced, each of said fragments that includes part of any given one said DNA molecules to be sequenced having a tag sequence that is different from each of the tag sequences in fragments that include part of any other one of said DNA molecules to be sequenced,
(ii) each fragment of a first set of said hybrid DNA fragments comprising a first one of said tags, said first set of fragments comprising fragments of different lengths of a first one of said DNA molecules to be sequenced;
and each fragment of a second set of said sets fragments comprising a second one of said tags, said second set of fragments comprising fragments of different lengths of a second one of said DNA molecules to be sequenced,
(c) separating said first and said second set of fragments according to their size, yielding size-separated fragments,
(d) hybridizing said size=separated fragments under stringent conditions with a first oligonucleotide probe able to hybridize specifically with said first one of said tag sequences,
(e) detecting a first pattern of hybridization with said first probe, wherein said first pattern reflects the nucleotide sequence of at least a part of said first DNA molecule to be sequenced,
(f) hybridizing said size separated fragments under stringent conditions with a second oligonucleotide probe able to hybridize specifically with said second one of said tag sequences, and
(g) detecting a second pattern of hybridization with said second probe, wherein said second pattern reflects the nucleotide sequence of said second DNA molecule to be sequenced.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/228,596Filed 4 Aug 1988 · continuation in part
Priority: 11 Aug 1987
Granted: 17 Jul 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

C12Q 1/6869
Involving nucleic acids: methods for sequencing
C12Q 1/6813
Involving nucleic acids: hybridisation assays
C12Q 1/6874
Methods for sequencing: involving nucleic acid arrays, e.g. sequencing by hybridisation
Y10S 435/803
Chemistry: molecular biology and microbiology: physical recovery methods, e.g. chromatography, grinding