Abstract:
Camelid and shark single-domain heavy chain antibodies lacking the light chains, and their analogs are disclosed. Methods for using the antibodies and their analogs to detect antigens are disclosed. Methods to derivatize such antibodies and analogs to develop diagnostic assays are described. Also provided are kits, and methods of using such diagnostics assays.
Abstract:
The present invention provides methods for isolating cell free nucleic acid, e.g., apoptotic or fetal nucleic acids and methods of detecting neoplastic cells or identifying the genetic composition of a fetus. The invention also provides magnetic particles comprising an anti-DNA antibody, and kits comprising the magnetic particles.
Abstract:
The present invention provides methods for isolating cell free nucleic acid, e.g., apoptotic or fetal nucleic acids and methods of detecting neoplastic cells or identifying the genetic composition of a fetus. The invention also provides magnetic particles comprising an anti-DNA antibody, and kits comprising the magnetic particles.
Abstract:
The present invention provides probes, kits and methods for specifically binding mRNA of target cells, e.g., fetal cells, that allows visualization of the target cells, under conditions that allows a second probe to specifically bind the target cell's chromosomal DNA.
Abstract:
The present invention provides probes, kits and methods for specifically binding mRNA of target cells, e.g., fetal cells, that allows visualization of the target cells, under conditions that allows a second probe to specifically bind the target cell's chromosomal DNA.
Abstract:
The present invention provides compositions comprising a solution of a compound useful for lysing biological cells and methods for using the compositions to lyse biological cells and to isolate nucleic acid.
Abstract:
Novel chemistries, methods and assays are described for the rapid detection and measurement of phosphorylation or de-phosphorylation of polypeptides, oligonucleotides or lipids based upon the use of phosphoryl, phosphoroamino or phosphorothioate specific hetero-bifunctional linkers combined with fluorescence polarization or fluorogenic detection. Homogeneous assay applications possible using these novel chemistries and methods include in vitro fluorescence polarization assays for the detection of general and isoform specific polypeptide, oligonucleotide and lipid kinase and phosphatase enzymes. Heterogeneous assay applications possible using the same novel chemistries and assaymethods enable development of in vitro and in vivo fluorogenic assays of general or specific kinase or phosphatase enzyme activities in cell lysates or serum. In all cases, these new chemistries, methods and assays enable simultaneous multi-kinase detection and profiling.
Abstract:
The present invention provides compositions comprising a solution of a compound useful for lysing biological cells and methods for using the compositions to lyse biological cells and to isolate nucleic acid.
Abstract:
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.
Abstract:
Spheroidal beads present an exterior surface of a hydrophilic permeable, deformable hydrogel, which is an isocyanate-functional polymer that is polymerized by urethane bonds and cross-linked by urethane and urea bonds. Sequestering agents at or near the surface are covalently bound to isocyanate groups or to intermediate linkers that are so bound, and the deformable hydrogel allows sequestering agents to retain their native three-dimensional configurations. As a result of such hydrogel characteristics and hydrophilicity, the beads achieve highly effective capture of very small subpopulations of rare cells from bodily fluids or the like and very effectively deter nonspecific binding of other biomaterials present in such bodily fluid. They may be all-hydrogel spheroids or hydrogel-coated substrates.