Abstract:
Embodiments of the present invention relate to reagents and their use for elemental imaging mass spectrometry of biological samples. The embodiments comprising methods for quantifying one or more analytes within a sample, comprising the steps of: (a) providing the sample, wherein the one or more analytes are immobilized to a sample carrier, wherein the sample has been labelled with one or more mass tags comprising one or more labelling atoms, (b) performing mass cytometry on the sample to determine the level of the one or more labelling atoms, wherein the level of the one or more labelling atoms corresponds to the copy number of the one or more analytes.
Abstract:
Described herein are methods for preparing DNA templates for single-cell transcript sequencing of RNA from a population of cells. The methods entail distributing cells from the population into separate reaction volumes so that a plurality of separate reaction volumes each contain a single, isolated cell, wherein the cells have been treated with a fixative prior to distribution. The isolated cells are then permeabilized or disrupted, and cDNA is prepared by reverse transcript, followed by amplification. Also provided is a novel chemistry for efficient production of DNA templates from T-cell receptors or immunoglobulins in single cells.
Abstract:
Described herein are methods useful for incorporating one or more adaptors and/or nucleotide tag(s) and/or barcode nucleotide sequence(s) one, or typically more, target nucleotide sequences. In particular embodiments, nucleic acid fragments having adaptors, e.g., suitable for use in high-throughput DNA sequencing are generated. In other embodiments, information about a reaction mixture is encoded into a reaction product. Also described herein are methods and kits useful for amplifying one or more target nucleic acids in preparation for applications such as bidirectional nucleic acid sequencing. In particular embodiments, methods of the invention entail additionally carrying out bidirectional DNA sequencing. Also described herein are methods for encoding and detecting and/or quantifying alleles by primer extension.
Abstract:
Methods for detecting chromosomal aneuploidy of a specified chromosome or chromosome region are provided. Also provided are methods for genetic analysis of heterogeneously sized chromosomal DNA fragments. The methods are useful for non-invasive prenatal diagnosis and other genetic analyses.
Abstract:
In certain embodiments, the present invention provides amplification methods in which nucleotide tag(s) and, optionally, a barcode nucleotide sequence are added to target nucleotide sequences. In other embodiments, the present invention provides a microfluidic device that includes a plurality of first input lines and a plurality of second input lines. The microfluidic device also includes a plurality of sets of first chambers and a plurality of sets of second chambers. Each set of first chambers is in fluid communication with one of the plurality of first input lines. Each set of second chambers is in fluid communication with one of the plurality of second input lines. The microfluidic device further includes a plurality of first pump elements in fluid communication with a first portion of the plurality of second input lines and a plurality of second pump elements in fluid communication with a second portion of the plurality of second input lines.
Abstract:
An apparatus for imaging one or more selected fluorescence indications from a microfluidic device (205). The apparatus includes an imaging path coupled to least one chamber in at least one microfluidic device (205). The imaging path provides for transmission of one or more fluorescent emission signals derived from one or more samples in the at least one chamber of the at least one microfluidic device (205). The chamber has a chamber size, the chamber size being characterized by an actual spatial dimension normal to the imaging path. The apparatus also includes an optical lens system (210, 212) coupled to the imaging path. The optical lens system is adapted to transmit the one or more fluorescent signals associated with the chamber.
Abstract:
A method for processing an image of a microfluidic device. The method includes receiving a first image of a microfluidic device. The first image corresponds to a first state. Additionally, the method includes receiving a second image of the microfluidic device. The second image corresponds to a second state. Moreover, the method includes transforming the first image and the second image into a third coordinate space. Also, the method includes obtaining a third image based on at least information associated with the transformed first image and the transformed second image, and processing the third image to obtain information associated with the first state and the second state.
Abstract:
A biological substrate, e.g., microfluidic chip. The substrate includes a rigid substrate material, which has a surface region capable of acting as a handle substrate. The substrate also has a deformable fluid layer coupled to the surface region. One or more well regions are formed in a first portion of the deformable fluid layer and are capable of holding a fluid therein. The one or more channel regions are formed in a second portion of the deformable fluid layer and are coupled to one or more of the well regions. An active region is formed in the deformable fluid layer. At least three fiducial markings are formed within the non-active region and disposed in a spatial manner associated with at least one of the well regions. A control layer is coupled to the fluid layer.