Abstract:
A method for preparing a sample by utilizing a mechanical force in the presence of a size stabilizer to break apart the sample to obtain nucleic acid molecules in a usable size range.
Abstract:
The present invention relates to a method for metallizing a nucleic acid molecule by providing a metal sol, mordanting metal particles from the metal sol on the nucleic acid molecule, and contacting the mordanted nucleic acid molecule with a metal deposition solution to deposit metal on the nucleic acid molecule. A method for detecting a target nucleic acid molecule in a sample employing metallized nucleic acid molecules is also disclosed.
Abstract:
The present invention is directed to a method of quantitatively detecting target nucleic acid molecules in a sample. In carrying out this method, one or more different groups of two or more electrically separated electrical conductors are provided with capture probes attached to the conductors such that a gap exists between the capture probes on the electrically separated conductors. The capture probes are contacted with a sample, potentially containing the target nucleic acid molecules, under conditions effective to permit any of the target nucleic acid molecule present in the sample to hybridize to the capture probes and thereby connect the capture probes. The presence of the target nucleic acid molecules is detected by determining whether electricity is conducted between the electrically separated conductors. The electrically separated conductors are then interrogated to quantify the concentration of target nucleic acid molecules present in the sample.
Abstract:
The present invention relates to a device for the detection of a target molecule in an environment. The device includes a detection system having a detection cartridge containing a detection chip where capture probes are attached to two or more electrically separated conductors such that a gap exists between the capture probes on the electrically separated conductors. A sample can be analyzed for the presence of the target molecule by determining whether any target molecules present in the sample bind to the capture probes and electrically connect the conductors. The device includes a cartridge manipulator having a plurality of detection cartridges where an unused individual detection cartridge can be inserted into a support unit for detection of the target molecule in the sample. The present invention also relates to a method for the detection of a biological agent using the device disclosed.
Abstract:
The present invention relates to a method of manufacturing a detection device which involves providing a substrate having a layer of gold and a first layer of photosensitive material. Next, the substrate is subjected to a first level photolithography treatment to produce a gold electrical conductor containing conductive fingers with spaces between them. Finally, biological probes are attached to the conductive fingers under conditions effective to form a gap between the biological probes on the spaced apart conductive fingers. As a result, a target molecule, if present in a sample, can bind to a pair of the biological probes on the spaced apart conductive fingers to bridge the gap between the biological probes, allowing detection of the target molecule.
Abstract:
The present invention relates to methods for detecting a target nucleic acid molecule in a sample. The methods involve providing a device having surfaces not in contact with each other, at least one of which is moveable. A pair of oligonucleotide probes complementary to the target nucleic acid molecule are attached to the surfaces of the device. The device is then contacted with a sample, under selective hybridization conditions, to permit target molecules, if any, present in the sample, to hybridize to the probes. Finally, it is determined whether there is a decrease in the relative movement between the surfaces, thereby indicating the presence of the target molecule in the sample. Alternatively, single stranded nucleic acid molecules are attached to the surfaces to determine whether the two surfaces are closer to one another than prior to the contacting. Devices used to carry out the above methods are also disclosed.
Abstract:
A method for preparing a sample by utilizing a mechanical force in the presence of a size stabilizer to break apart the sample to obtain nucleic acid molecules in a usable size range.
Abstract:
A fluid delivery system having a rotating reservoir insert and a cartridge body. The rotating reservoir insert having a plurality of reservoirs in communication with ports on the external surface of the insert. The ports are positioned such that upon rotation the port is in-line with a fluid extracting device, such as a syringe, capable of extracting fluid from the reservoir.
Abstract:
The present invention relates to a device for the detection of a target molecule in an environment. The device includes a detection system having a detection cartridge (303) containing a detection chip where capture probes are attached to two or more electrically separated conductors such that a gap exists between the capture probes on the electrically separated conductors. A sample can be analyzed for the presence of the target molecule by determining whether any target molecules present in the sample bind to the capture probes and electrically connect the conductors. The device includes a cartridge manipulator (302) having a plurality of detection cartridges (303) where an unused individual detection cartridge can be inserted into a support unit (300) for detection of the target molecule in the sample. The present invention also relates to a method for the detection of a biological agent using the device disclosed.
Abstract:
The present invention is directed to a method of quantitatively detecting target nucleic acid molecules in a sample. In carrying out this method, one or more different groups of two or more electrically separated electrical conductors are provided with capture probes attached to the conductors such that a gap exists between the capture probes on the electrically separated conductors. The capture probes are contacted with a sample, potentially containing the target nucleic acid molecules, under conditions effective to permit any of the target nucleic acid molecule present in the sample to hybridize to the capture probes and thereby connect the capture probes. The presence of the target nucleic acid molecules is detected by determining whether electricity is conducted between the electrically separated conductors. The electrically separated conductors are then interrogated to quantify the concentration of target nucleic acid molecules present in the sample.