Qiagen Gmbh

Molecular Staging Inc.

University of Colorado

Frank B Dean

Roger S Lasken

A Fawad Faruqi

Mark Driscoll

Osama A Alsmadi

Seiyu Hosono

Linhua Fang

Nebojsa Janjic

Thale Jarvis

John Nelson

Charles S McHenry

James M Bullard

Michele Wisniewski

Glenn Sanders

Garry Dallmann

Stacie Bell

Wanmin Song

Fawad A Faruqi

Mark D Driscoll

Reconstituted bacterial replication assemblies and methods for their use are provided.

Bacterial replication systems and methods

Disclosed are compositions and methods useful for reducing the formation of artifacts during nucleic acid amplification reactions. The method uses special oligonucleotides, referred to herein as template-deficient oligonucleotides, that cannot serve as a template for nucleic acid synthesis over part of their length. This prevents the oligonucleotides from serving as effective templates in the formation of artifacts. The disclosed method involves using a template-deficient oligonucleotide as at least one of the oligonucleotides (preferably a primer) in a nucleic acid amplification reaction, where the template-deficient oligonucleotide comprises one or more template-deficient nucleotides, preferably at or near the 5' end of the template-deficient oligonucleotide. The disclosed method is useful for reducing artifacts in any nucleic acid amplification reaction involving oligonucleotides. In a preferred form of the method the nucleic acid amplification reaction does not involve thermal cycling. The disclosed method is effective at reducing non-cycle oligonucleotide-based artifacts. Also disclosed are kits useful for reducing artifacts in nucleic acid amplification reactions. The disclosed kits include a template-deficient oligonucleotide, wherein the template-deficient oligonucleotide comprises one or more template-deficient nucleotides, and a nucleic acid polymerase.

Method for reducing artifacts in nucleic acid amplification

Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be &#x3c6;29 DNA polymerase.

Amplification of denatured and stabilized nucleic acids

Multiple displacement amplification

Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be &phgr;29 DNA polymerase.

Method of amplifying whole genomes without subjecting the genome to denaturing conditions

Processes for the amplification of target DNA sequences in the form of single or double stranded circular DNA molecules, especially those present in colony and plaque extracts, using multiple specific and/or random sequence oligonucleotide primers are disclosed along with methods for detecting such amplified target sequences. A kit containing components for use in the invention is also described.

Multiply-primed amplification of nucleic acid sequences

Growing community of inventors

Guilford, CT, United States of America

Frank B Dean