Abstract:
Processes for extracting nucleic acid from a biological sample and related assemblies and kits are disclosed. The processes comprise the steps of (a) providing a device comprising an inner surface, an outer surface, a first port, and a second port, wherein the inner surface is composed of unmodified, smooth glass and defines a tubular lumen providing fluid communication between the first port and second port, wherein the lumen is circular, oval, or elliptical in cross-section, and wherein the lumen is essentially free of nucleic acid-specific binding sites; (b) introducing a nucleic acid-containing sample into the lumen of the device via the first port; (c) allowing nucleic acid in the sample to bind to the unmodified smooth glass surface; and (d) washing the bound nucleic acid.
Abstract:
The invention relates to a method for the detection of oligonucleotides using anion exchange high performance liquid chromatography. Fluorescently labelled peptide nucleic acid oligomers, complementary to the oligonucleotide are hybridized to the oligonucleotides. Anion exchange high performance liquid chromatography is then performed and the hybridized moieties detected and quantitated. The invention also relates to a method for the simultaneous detection of both strands of an oligonucleotide in parallel from one sample, and a kit for use in qualitative and quantitative detection of one or two strands of an oligonucleotide
Abstract:
Methods for separating one or more analytes present in a fluid sample by passing the fluid through or into a mioroporous material (100), wherein the analytes are localized near the surface of the microporous material. Microporous material (100) has planar surface (120) and external surface (130) have holes or pores (110) therethrough. An internal surafce (140) is formed by channel (150). The analyte localizes: (i) in the region (160) 10 microns below the planar surface (120), (ii) adjacent to the planar surface (120), or (iii) in theregion (170) 25 microns above the planar surface.
Abstract:
The present invention is directed to a novel method of efficiently hybridising probes onto immobilized genomic DNA and/or RNA comprising the steps of (a) providing intact genomic DNA and denaturing said intact genomic DNA; (b) immobilizing said denatured intact genomic DNA onto a matrix; said matrix comprising pore sizes within a range of 0.6 µm to 2 µm including the outer limits (c) providing a set of probes and passing said probes through said matrix under conditions favouring hybridisation of the probes to its complementary sequence in said intact genomic DNA; and (d) washing off non-hybridised probes through said matrix, leaving formed hybridised intact genomic DNA/probe complexes for further analysis.The present invention is further directed to a novel method for target nucleic acid detection and quantification in a genomic DNA sample comprising the steps of: (a) providing intact genomic DNA and denaturing said intact genomic DNA; (b) performing a hybridisation according to a method as described above; (c) recovering hybridised probes; and essentially simultaneously amplifying any recovered probe using a single primer pair, each member of said primer pair binding to each recovered probe onto the respective flanking primer attachment sequences of said probe, and (d) qualitatively and quantitatively analysing the recovered amplified probes of step (c).The present invention also relates to the uses thereof as well as devices, apparatus and kits for performing said methods of the invention.
Abstract:
The present invention provides methods and compositions for detecting and analyzing clonal T-cell receptor (TCR) gene rearrangement using temporal temperature gradient gel electrophoresis (TTGE), which employs a gradual and uniform increase in the temperature of a constant denaturing gel to resolve different DNA molecules based on base pair composition. The present invention also provides methods and compositions for providing appropriate DNA migration markers for TTGE analysis.
Abstract:
The present invention is directed to methods and compositions for the use of electron transfer moieties with different redox potentials to electronically detect nucleic acids, particularly for the electrochemical sequencing of DNA.
Abstract:
Die vorliegende Erfindung betrifft das Gebiet der Diagnostik von Nukleinsäuren. Gegenstand der vorliegenden Erfindung ist insbesondere ein hock sensitives Verfahren zum Nachweis, zur Differenzierung und zur Charakterisierung von Nukleinsäuren in Form eines Trocken-schnelltestes; der Trockenschnelltest enthaltend ein chromatographisches Material umfassend - eine Probenaufnahmezone, - eine Trennzone mit Bindungsbereich in welchem eine oder mehrere sequenzspezifische Nu-kleinsäuresonden immobilisiert sind and - eine hinter der Trennzone mit Bindungsbereich liegende Flüssigkeit absorbierende Zone, dadurch gekennzeichnet, dass die sequenzspezifischen Nukleinsäuresonden über einen Polymerlinker immobilisiert sind und weiterhin dadurch gekennzeichnet, dass das Verfahren folgende Schritte umfasst: i) die nachzuweisende Nukleinsäure wird im Falle doppelsträngiger Nukleinsäuren denaturiert und anschliessend neutralisiert,ii) die nachzuweisende Nukleinsäure wird auf die Probenaufnahmezone in einem Laufpuffer, welcher mild denaturierende Agenzien enthält, aufgetragen, iii) die nachzuweisende Nukleinsäure bewegt sich von der robenaufnahmezone in Richtung Flüssigkeit absorbierende Zone, iv) die nachzuweisende Nukleinsäure wird im Bindungsbereich der Trennstrecke mit der se-quenzspezifischen Nukleinsäuresonde in Kontakt gebracht and hybridisiert an die sequenz-spezifische Nukleinsäuresonde v) die nachzuweisende Nukleinsäure beziehungsweise die Hybridisierung der nachzuweisen-den Nukleinsäure an die sequenzspezifische Nukleinsäuresonde wird detektiert über eine Markierung, die an der nachzuweisenden Nukleinsäure angebracht ist oder über die Detektion einer Markierung des Nukleinsäuredoppelstranges. Des weiteren ist Gegenstand der vorliegenden Erfindung eine Vorrichtung zur Durchftihrung des erfindungsgemässen Verfahrens.
Abstract:
A method for preparing a nucleic acid component of a sample for amplification includes contacting the sample with a porous support that deactivates a nucleic acid amplification inhibitor component of the sample and directing a fluid through the porous support, whereby the nucleic acid component of the sample is directed through at least a portion of the porous support and is separated from the support, thereby preparing the nucleic acid component for amplification. The method can be conducted in an apparatus that includes a porous support having a component that deactivates a nucleic acid amplification inhibitor component of a sample contacting the porous support and a housing having an opening and defining an interior, said interior being in fluid communication with the porous support, whereby at least a portion of a fluid directed through the opening is directed through at least a portion of the porous support and separates at least a portion of a nucleic acid component of a sample contacting the porous support from the support, thereby preparing the nucleic acid component for amplification.