摘要:
The present teachings relate to systems, methods, and the like, for analyzing biological polymers, by use of opposing forces. Among other things, the present teachings can be used to determine sequence information, such as in genetic sequencing and genotyping applications. Various embodiments are described for efficient, high throughput sequencing of nucleic-acid molecules, such as DNA. Various embodiments are described wherein nucleic-acid sequence information is determined without the need or use of extrinsic labels. As well various embodiments of methods, systems, and the like, are described, which can provide long and accurate read lengths for low-cost nucleic acid sequencing.
摘要:
Methods for highly parallel Sanger sequencing are discussed. In particular, provided herein are methods using particles to clonally amplify templates and to introduce the amplified nucleic acids into many parallel channels with a single template per channel. Once in the channels, the nucleic acids are separated by size using electrophoresis to produce long read length sequencing information. Methods involving optical detection of the size-separated nucleic acids and analysis of the resulting electropherograms to yield the sequences are disclosed.
摘要:
The present teachings relate to methods, systems, and apparatus for low cost label-free assay detection. The present teachings, in a variety of embodiments, employ opposing forces to detect signals which depend on the number of charges on and/or the size of a particle. The particle, which can be subjected to opposing forces, can have specific capture probes at its surface. As analytes of interest are captured by the particle, the number of charges on the particle surface and/or the size of the particle is changed. A particle parameter or kinematic property such as the position, velocity, acceleration or force of/on the particle can be measured, and results obtained relating, for example, to the present, absence, quantity, and such, of one or more analytes of interest. Various embodiments are described for efficient, high throughput assays of samples potentially including one or more analytes of interest, such as bioanalytes. As well, various embodiments are described wherein binding assays can be carried out without the need or use of extrinsic labels. A number of embodiments provide, for example, methods, systems, and apparatus for detecting analytes (such as nucleic acids, proteins, cells and other entities, particulates, and the like) in one or more samples. Also described are: detection of a single copy of a target biomolecule, such as DNA, captured onto a trapped (e.g., tethered) bead; protocols for fabricating encoded bead arrays for multiplex assays; and methods, systems and apparatus for efficient and specific capture of pathogen biomolecular markers onto bead-bound capture probes, as well as detection and measurement of such capture events.
摘要:
The present invention provides novel microfluidic devices and methods that are useful for performing high-throughput screening assays. In particular, the devices and methods of the invention are useful in screening large numbers of different compounds for their effects on a variety of chemical, and preferably, biochemical systems.
摘要:
Electrokinetic devices having a computer for correcting for electrokinetic effects are provided. Methods of correcting for electrokinetic effects by establishing the velocity of reactants and products in a reaction in electrokinetic microfluidic devices are also provided. These microfluidic devices can have substrates with channels, depressions, and/or wells for moving, mixing and monitoring precise amounts of analyte fluids.
摘要:
The present invention generally provides a micropump that utilizes electroosmotic pumping of fluid in one channel or region to generate a pressure based flow of material in a connected channel, where the connected channel has substantially no electroosmotic flow generated. Such pumps have a variety of applications, and are particularly useful in those situations where the application for which the pump is to be used prohibits the application of electric fields to the channel in which fluid flow is desired, or where pressure based flow is particularly desirable.
摘要:
The present invention is generally directed to improved microfluidic devices, systems and methods of using same, which incorporate channel profiles that impart significant benefits over previously described systems. In particular, the presently described devices and systems employ channels having, at least in part, depths that are varied over those which have been previously described. These varied channel depths provide numerous beneficial and unexpected results.
摘要:
Integrated systems, apparatus, software, and methods for performing biochemical analysis, including DNA sequencing, genomic screening, purification of nucleic acids and other biological components and drug screening are provided. Microfluidic devices, systems and methods for using these devices and systems for performing a wide variety of fluid operations are provided. The devices and systems of are used in performing fluid operations which require a large number of iterative, successive or parallel fluid manipulations, in a microscale, or sealed and readily automated format.
摘要:
The present invention is generally directed to methods, apparatus and systems for use in performing in situ dilution or concentration of a particular subject material in a microfluidic device or system. These methods and apparatus may generally be integrated with other microfluidic operations and/or systems, to perform a number of different manipulations, wherein dilution or concentration, carried out within the context of the microfluidic device or system, is just one part.
摘要:
The present invention generally provides microfluidic devices (200) and systems that utilize electrokinetic material transport systems to selectively control and direct the transport of materials through and among complex arrangements of integrated microscale channels (for example, 202 and 208+2n, where n=0, 1, . . . 8) disposed within integrated body structures.