摘要:
A system and method for manipulating magnetically responsive particles in a solution to separate nucleic acid molecules from cell components in a cell solution. The system and method employ a device capable of receiving a plurality of tubes, each of which contain respective sample and magnetically responsive particles. The device includes heating and cooling devices to facilitate a lysing step to release the nucleic acid molecules from the cells in the cell solution. The device further includes moveable magnets which can be moved proximate to and away from the tube to hold the magnetically responsive particles to which the nucleic acid molecules become bound, so that the molecule-bound particles can be separated from the remainder of the solution, and washed as appropriate. The system also employs an electromagnet which is capable of demagnetizing the particles to allow the particles to freely mix with solution, such as elution solutions which are used to unbind the molecules from the particles.
摘要:
The present invention relates to a vehicle for delivery of particles to a sample of cells. The vehicle includes a barrier to retain the particles, which barrier in one embodiment is a frangible, dissolvable or meltable material. Once released into the sample, the particles are useful in methods to lyse or disrupt cells or in methods to separate cellular components from one another if the cells in the sample are already lysed or disrupted.
摘要:
The present invention relates to a composition which is useful for the reversible binding of a nucleic acid molecule. The composition, which may be packaged in a kit, includes a paramagnetic particle in an acidic solution.
摘要:
The present invention relates to a vehicle for delivery of particles to a sample of cells. The vehicle includes a barrier to retain the particles, which barrier is a dissolvable material. Once released into the sample, the particles are useful in methods to lyse or disrupt cells or in methods to separate cellular components from one another if the cells in the sample are already lysed or disrupted.
摘要:
A system and method for preparing and testing of targeted nucleic acids is presented. The system integrates a pipetter, extractor, assay reader, and other components, including a selectively compliant articulated robot arm (SCARA). This synergistic integration of previously separate diagnostic tools creates a system and method whereby a minimum of human intervention is required. The resulting system provides a substantially more accurate and precise method of isolating, amplifying and detecting targeted nucleic acids for diagnosing diseases.
摘要:
The present invention relates to methods for pretreating biological samples for extraction of nucleic acid therefrom The present invention employs a combination of at least one protein denaturant with one or more of the following elements to form a reaction mixture for extraction of nucleic acid: (1) at least one aprotic solvent, (2) stepwise heating, and (3) sample dilution.
摘要:
The present invention relates to methods in which ion exchange resins are used to reduce the amount of substances which interfere with nucleic acid hybridization in samples. The methods also stabilize the samples. Kits containing the ion exchange resins render the methods convenient to use.
摘要:
The present invention relates to a method for reducing the amount of substances inhibitory to nucleic acid hybridization in samples. The method is practiced prior to release of target nucleic acid from cells of interest and involves contacting the sample with an agent which solubilizes the inhibitory substances and does not effectuate release of nucleic acids from cells in the sample, and then the cells from the agent.
摘要:
The present invention relates to methods for pretreating biological samples for extraction of nucleic acid therefrom. The present invention employs a combination of at least one protein denaturant with one or more of the following elements to form a reaction mixture for extraction of nucleic acid: (1) at least one aprotic solvent, (2) stepwise heating, and (3) sample dilution.
摘要:
A system and method for preparing and testing of targeted nucleic acids is presented. The system integrates a pipetter, extractor, assay reader, and other components, including a selectively compliant articulated robot arm (SCARA). This synergistic integration of previously separate diagnostic tools creates a system and method whereby a minimum of human intervention is required. The resulting system provides a substantially more accurate and precise method of isolating, amplifying and detecting targeted nucleic acids for diagnosing diseases.