Patent application number | Description | Published |
20110224106 | Production Of Single-Stranded Circular Nucleic Acid - A method is provided for generating single stranded circular nucleic acid from a sample of target nucleic acid. A complex comprising a transposase and a plurality of hairpin polynucleotides is formed with each of the hairpin polynucleotides having a duplex region comprising a transposase recognition sequence. The complex is mixed with the target nucleic acid, thereby fragmenting the target nucleic acid and ligating the hairpin polynucleotides to the target nucleic acid to form hairpin-linked nucleic acid fragments, each having a nucleobase segment gap between each fragment and its corresponding hairpin polynucleotide. The hairpin-linked fragments are contacted with a ligase, thereby ligating the hairpin-linked fragments together to form single-stranded circular nucleic acid comprising a pair of opposing loops and an intervening duplex region comprising a pair of nucleobase segment gaps. The single-single stranded circular nucleic acid is then contacted with a polymerase and nucleotide triphosphates, thereby filling the nucleobase segment gaps. | 09-15-2011 |
20110281776 | INTEGRATED SAMPLE PREPARATION SYSTEMS AND STABILIZED ENZYME MIXTURES - The present invention provides integrated sample preparation systems and stabilized enzyme mixtures. In particular, the present invention provides microfluidic cards configured for processing a sample and generating DNA libraries that are suitable for use in sequencing methods (e.g., next generation sequencing methods) or other suitable nucleic acid analysis methods. The present invention also provides stabilized enzyme mixtures containing an enzyme (e.g., an enzyme used in whole genome amplification), BSA, and a sugar. Such enzyme mixtures may be lyophilized and stored at room temperature without significant loss of enzyme activity for months. | 11-17-2011 |
20120070830 | STABILIZATION OF OZONE-LABILE FLUORESCENT DYES BY THIOUREA - The present invention provides compositions and methods for stabilization of fluorescent dyes. In particular, the present invention provides buffer systems comprising thiourea to protect against degradation of ozone-labile fluorescent dyes. | 03-22-2012 |
20120100549 | TARGETED GENOME AMPLIFICATION METHODS - The methods disclosed herein relate to methods and compositions for amplifying nucleic acid sequences, more specifically, from nucleic acid sequences of pathogens by targeted genome amplification. In certain embodiments, multiple primer pairs are employed that flank a target region and polymerization is conducted with a strand displacing enzyme. | 04-26-2012 |
20120164691 | COMPOSITIONS AND METHODS FOR PRODUCING SINGLE-STRANDED CIRCULAR DNA - The present invention provides methods, kits, and compositions for producing single-stranded circular DNA by PCR. In particular, hairpin primers are provided, and methods of use thereof to produce single-stranded circular DNA molecules. | 06-28-2012 |
20120171726 | RAPID WHOLE GENOME AMPLIFICATION - The present invention provides compositions and methods for rapidly amplifying target nucleic acid (e.g., using whole genome amplification) that allows small amounts of starting nucleic acid to be employed. In certain embodiments, the methods employ compositions that comprise: phi29 polymerase, exo- Klenow polymerase and/or Klenow polymerase, dNTPs, primers, and a buffering agent. In some embodiments, the target nucleic acid is amplified at a rate that would result in at least 1000-fold amplification in thirty minutes. | 07-05-2012 |
20120172258 | NUCLEIC ACID SAMPLE PREPARATION METHODS AND COMPOSITIONS - The present invention provides compositions and methods for preparing a nucleic acid library in a multi-purpose buffer (e.g., employing whole genome amplification), where nucleic acid purification is not required between or during steps. In certain embodiments, small amounts of starting nucleic acid (e.g., genomic DNA) are employed and the steps are accomplished in a single container. In some embodiments, the nucleic acid library is subjected to sequencing methodologies or rolling circle amplification. | 07-05-2012 |
20120190126 | MICROFLUIDIC TRANSDUCER - Provided herein are apparatuses and methods for fragmenting nucleic acids or disrupting cells. For example, some embodiments provide a disposable microfluidic device designed to position a sample to be in direct contact with a high frequency vibrating element that emits an ultrasonic frequency into the sample such that the vibrational energy transduced into the sample results in fragmenting nucleic acids or disrupting cells. | 07-26-2012 |
20130274147 | INTEGRATED SAMPLE PREPARATION SYSTEMS AND STABILIZED ENZYME MIXTURES - The present invention provides integrated sample preparation systems and stabilized enzyme mixtures. In particular, the present invention provides microfluidic cards configured for processing a sample and generating DNA libraries that are suitable for use in sequencing methods (e.g., next generation sequencing methods) or other suitable nucleic acid analysis methods. The present invention also provides stabilized enzyme mixtures containing an enzyme (e.g., an enzyme used in whole genome amplification), BSA, and a sugar. Such enzyme mixtures may be lyophilized and stored at room temperature without significant loss of enzyme activity for months. | 10-17-2013 |