摘要:
The present disclosure provides method and systems for improving nanopore-based analyses of polymers. The disclosure provides methods for selectively modifying one or more monomeric subunit(s) of a kind a pre-analyte polymer that results polymer analyte with a modified subunit. The polymer analyte produces a detectable signal in a nanopore-based system. The detectable signal, and/or its deviation from a reference signal, indicates the location of the modified subunit in the polymer analyte and, thus, permits the identification of the subunit at that location in the original pre-analyte polymer.
摘要:
The present disclosure provides systems and methods for sample preparation, processing and analysis. Also provided in the present disclosure is a fully-integrated electrophoresis cartridge which has a small footprint and configured to removably engage with the system.
摘要:
Method for controlling a digital-type microfluidic including provided at least one micro-droplet processing request for creating, moving, combining or mixing micro-droplets, and at least actuator processing request. The actuator processing request comprises providing a gas pressure in a selected passage by an internal component configured to heat a gas to generate a gas pressure and determining, utilizing at least one internal component, the presence or absence of a micro-droplet at a selected position. Control signals are generated in a pattern and sequence that is responsive to each micro-droplet processing request to perform the requested micro-droplet processing in the MF device.
摘要:
A spacer element (1) is disclosed having an integral screen for use in filled cell electrodialysis. The spacer (1) has a continuous portion (2) impermeable to flow and a screen (3) which spans a centrally-located flow treatment region that contains active treatment material, such as ion exchange beads. The screen (3) may perform a structural function, allowing operation at elevated pressure, and may also define a minimum gap between adjacent membranes and enhance mixing along the flow path and at cell boundaries. The spacer element (1) may be configured to enhance hydraulic filling of the cells, and cell architecture is readily implemented in a wide range of useful flow path geometries utilizing the screen spacer element (1).
摘要:
Methods and apparatus that are embodied in Figure 2 are presented that facilitate electrophoresis of prior-cast, hydratable separation media, usefully immobilized pH gradient (IPG) strips: The method exploits the swelling of rehydration to help lodge the media in an enclosing member that permits spaced electrical communication with the enclosed separation media. The electrical communication permits a voltage gradient to be established in the enclosed separation medium sufficient to effect separation of analytes therein. Cassettes, buffer cores, electrophoresis systems and kits are presented for effecting the methods of the invention.
摘要:
The activity of encogenic intercellular chemical reactions of molecules is measured by the use of fluorescently labeled substrate molecules that underdo a change in electrophoretic mobility upon a chemical reaction such as that catalyzed by an enzyme or kinase. Specificity is achieved by using labeled substrate molecules that can be acted upon only by specific oncogenic enzymes can be determined. Measurements are made with the intercellular presence of such substrate molecules, at some time of interest. To ensure accuracy, measurements must be made in a timely manner so as to minimize chemical reactions occuring subsequent to the time of interest. Fast controllable laser lysis is used to obtain the contents of said cell or cells into which reporter substrate molecules have been introduced. The cell contents are then subjected to capillary electrophoresis and oncogenic enzymatic activity is determined by comparing amounts of unaltered substrate molecules to the amounts of altered substrate molecules which are separated by the electrophoresis and identified by the presence of a fluorescent label.