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San Diego, CA, United States

Biocept | Date: 2015-07-29

The present invention provides a device for isolating target biomolecules or cells from samples, particularly biological samples. In particular, the device comprises a loading mixture, which contains the biological sample and a first binding entity that specifically binds to the target biomolecule or target cell; and a micro-channel coated with a second binding entity that binds directly or indirectly to the first binding entity. Methods of capturing, detecting, and/or evaluating target biomolecules or target cells (e.g. cancer cells) in biological samples are also disclosed.

The present invention provides methods for preventing clumping of cells in microfluidic devices by addition of diazolidinyl urea (DU). DU can be added to samples at the time of collection or can be added to samples post-collection. DU can also be pre-added to sample collection devices.

A microflow apparatus for separating or isolating cells from a bodily fluid or other liquid sample uses a flow path where straight-line flow is interrupted by a pattern of transverse posts. The posts are spaced across the width of a collection region in the flow path, extending between the upper and lower surfaces thereof; they have rectilinear surfaces, have arcuate cross-sections, and are randomly arranged so as to disrupt streamlined flow. Sequestering agents, such as Abs, are attached to all surfaces in the collection region via a hydrophilic coating, preferably a hydrogel containing isocyanate moieties or a PEG or polyglycine of substantial length, and are highly effective in capturing cells or other targeted biomolecules as a result of such streamlined flow disruption.

A micro flow device (

Aegea Biotechnologies and Biocept | Date: 2013-03-15

The present invention provides methods for detecting the presence or absence of a nucleic acid variant in a target region. These methods include amplifying the target region with a forward primer and a reverse primer in the presence of a selector blocker. The selector blocker includes a sequence complementary to the target region in the absence of the nucleic acid variant. The methods further include detecting amplification of the target region where amplification of the target region indicates the presence of the nucleic acid variant in the target region. The nucleic acid variant can include deletions, mutations or insertions.

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