Abstract:
The present invention provides a method of detecting the amount of a target sequence which may be present in a test sample. The method uses an aggregate primer series, which comprises at least two primer sets, in an amplification reaction to detect the relative concentration of a target sequence which may be present in a test sample. The primer sets have different sensitivities and hybridize with sub-target sequences which are different regions of the target sequence. The method generally comprises cycling a test sample suspected of containing a target sequence, an aggregate primer series, and means necessary for performing an amplification reaction; and detecting any amplified sub-target sequences. Based on a qualitative detection of the amplified sub-target sequences generated by individual primer sets, the relative quantity of the target sequence can be determined.
Abstract:
Methods, devices, apparatus and kits for amplifying and detecting nucleic acid are provided. The apparatus is a one or two-tier thermal cycling device (16) that operates in conjunction with a reaction/detection unit (20). A sample (38) is loaded into a reaction chamber (30) of the device which is then mated with a detection chamber (32) to form the reaction/detection unit. A first heating element (90) of the thermal cycling apparatus applies a desired temperature to the reaction/detection device to amplify target nucleic acid in the sample. The reaction mixture is then transferred to the detection chamber by the second heating element (92) and amplified target nucleic acid is immobilized on a support in the detection chamber. Microprocessor control controls the heat applied by the second element independently of the heat applied by the first element. A detection system associated with the apparatus detects and analyzes the immobilized amplified nucleic acid target. Images are captured and digitized and subjected to statistical analysis to improve the accuracy of the method.
Abstract:
Provided herein are methods for detecting multiple target nucleic acid sequences in a test sample. Also provided is a hybridization platform useful for detecting multiple target sequences in a test sample. The hybridization platform comprises a solid support material having a defined pattern of capture probes immobilized thereon.
Abstract:
An apparatus and method for detecting amplified target nucleic acid is provided wherein the presence and concentration of amplified target is determined by total internal reflection over the course of the amplification reaction. A method and apparatus for detecting target nucleic acid is also provided wherein the presence and concentration of target is determined by total internal reflection and coupling of the target to the TIR element by scissile linkage. An improved immunoassay using total internal reflection and differential temperature cycling is further provided.
Abstract:
The invention relates to multiplex ligase chain reaction (LCR). Two or more putative target sequences are selected. For each one, a set of four probes is used simultaneously to amplify the putative sequence if it is present in the sample. Preferably, all the amplicons are labeled with a common label/hapten and, for each different target, with a unique label/hapten. The invention also relates to an immunochromatographic strip device and method employing a diagonal array of capture spots.
Abstract:
Provided herein are methods for detecting multiple target nucleic acid sequences in a test sample. Also provided is a hybridization platform useful for detecting multiple target sequences in a test sample. The hybridization platform comprises a solid support material having a defined pattern of capture probes immobilized thereon.
Abstract:
Methods, devices, apparatus and kits for amplifying and detecting nucleic acid are provided. The apparatus is a one or two-tier thermal cycling device (16) that operates in conjunction with a reaction/detection unit (20). A sample (38) is loaded into a reaction chamber (30) of the device which is then mated with a detection chamber (32) to form the reaction/detection unit. A first heating element (90) of the thermal cycling apparatus applies a desired temperature to the reaction/detection device to amplify target nucleic acid in the sample. The reaction mixture is then transferred to the detection chamber by the second heating element (92) and amplified target nucleic acid is immobilized on a support in the detection chamber. Microprocessor control controls the heat applied by the second element independently of the heat applied by the first element. A detection system associated with the apparatus detects and analyzes the immobilized amplified nucleic acid target. Images are captured and digitized and subjected to statistical analysis to improve the accuracy of the method.
Abstract:
Methods, devices, apparatus and kits for amplifying and detecting nucleic acid are provided. The apparatus is a one or two-tier thermal cycling device (16) that operates in conjunction with a reaction/detection unit (20). A sample (38) is loaded into a reaction chamber (30) of the device which is then mated with a detection chamber (32) to form the reaction/detection unit. A first heating element (90) of the thermal cycling apparatus applies a desired temperature to the reaction/detection device to amplify target nucleic acid in the sample. The reaction mixture is then transferred to the detection chamber by the second heating element (92) and amplified target nucleic acid is immobilized on a support in the detection chamber. Microprocessor control controls the heat applied by the second element independently of the heat applied by the first element. A detection system associated with the apparatus detects and analyzes the immobilized amplified nucleic acid target. Images are captured and digitized and subjected to statistical analysis to improve the accuracy of the method.
Abstract:
The present invention provides a method of detecting the amount of a target sequence which may be present in a test sample. The method uses an aggregate primer series, which comprises at least two primer sets, in an amplification reaction to detect the relative concentration of a target sequence which may be present in a test sample. The primer sets have different sensitivities and hybridize with sub-target sequences which are different regions of the target sequence. The method generally comprises cycling a test sample suspected of containing a target sequence, an aggregate primer series, and means necessary for performing an amplification reaction; and detecting any amplified sub-target sequences. Based on a qualitative detection of the amplified sub-target sequences generated by individual primer sets, the relative quantity of the target sequence can be determined.