摘要:
A substrate plate or device adapted for use with biological or chemical assays is disclosed. The device may take the form of a multi-well plate having a three-dimensional, porous layer as part of a support surface within each well for immobilizing probe species. The porous layer is characterized as having a plurality of interconnected voids defined by a matrix of contiguous solid material. A method and its variants are also described.
摘要:
Described are methods relating to assessing antitargets of molecules. Also described are methods of screening molecules. In some aspects of the methods, the molecules are analyzed using a label free biosensor.
摘要:
A cell culture apparatus includes a substrate having formed therein a micro-well array, the micro-well array comprising a plurality of micro-wells. Each micro-well is defined by a curved surface which is concave.
摘要:
A method and apparatus for implementing the method is provided. The method involves performing an indirect competitive binding assay on a microarray to identify biological or chemical targets and screen for compounds of interest. The microarray comprises a common ligand located among membrane-, lipid- or protein-associated active binding sites. The method takes advantage of known or well-characterized binding kinetics, and steric interference between biological or chemicals targets of interest and universal readout units for different binding sites within the limited confines of a microspot. The biological targets, chemicals or organisms can specifically bind to target-binding sites, while the universal readout unit binds to the ligands in the microspot.
摘要:
A substrate plate or device adapted for use with biological or chemical assays is disclosed. The device may take the form of a multi-well plate having a three-dimensional, porous layer as part of a support surface within each well for immobilizing probe species. The porous layer is characterized as having a plurality of interconnected voids defined by a matrix of contiguous solid material. A method and its variants are also described.
摘要:
A substrate plate or device adapted for use with biological or chemical assays is disclosed. The device may take the form of a multi-well plate having a three-dimensional, porous layer as part of a support surface within each well for immobilizing probe species. The porous layer is characterized as having a plurality of interconnected voids defined by a matrix of contiguous solid material. A method and its variants are also described.
摘要:
A standardized, buffered solution or “ink” composition for re-formulating or suspending biological membranes used in the fabrication of membrane arrays. The composition can enhance assay performance and prolong the shelf life of biological membrane arrays. The ink composition comprises a combination of at least two of the following six classes of reagents: 1) a pH buffer reagent; 2) a monovalent or divalent, inorganic salt; 3) a membrane stabilizer; 4) a solution viscosity control reagent; 5) a water-soluble protein; or, 6) a protease inhibitor. A method for fabricating a membrane array using the present ink composition is also described.
摘要:
Methods for performing surface-mediated protein delivery into living cells, and fabricating protein-transfected cell cluster arrays are provided. The method comprises providing a protein-containing mixture; depositing said protein-containing mixture onto a surface at defined locations; affixing the protein-containing mixture to the surface as microspots; and plating cells onto the surface in sufficient density and under conditions for the proteins to be delivered into the cells. The protein-containing mixture comprises any suitable amino acid sequence, including peptides, proteins, protein-domains, antibodies, or protein-nucleic acid conjugates, etc., with a carrier reagent. Protein-transfected cell arrays may be used for rapid and direct, screening of protein or enzymatic functions or any given intracellular protein interaction in the natural environment of a living cell, as well as for high-throughput screening of other biological and chemical analytes, which affect the functions of these proteins.
摘要:
A fluorescent ligand includes a material having a binding affinity in the range of about 0.01 to about 25 nM, or about 0.1 to about 10 nM; a specificity to its cognate receptor in the range of about 50 to about 99%, or about 65 to about 99%; a cross-activity to other receptors of 0 to about 20%, or 0 to about 10%; a net charge per ligand of about −3 to about +5, or more preferably, about −2 to about +2 or most preferably for small compound ligands about −1 to about +2. The ligand may also have a hydrophobicity in the range of about 3 to about 55 minutes eluting time (as measured under specified eluting conditions). In some embodiments, the ligand including fluorescently labeled motilin 1-16 labeled with Bodipy-TMR, rhodamine or Cy5-. Other embodiments include fluorescently labeled Cy5-naltrexone, Cy5-neurotensin 2-13, N-terminal labeled neurotensin 2-13 or lys-labeled labeled neurotensin 2-13.
摘要:
A method and apparatus, as defined herein, for use in compound screening, compound profiling, or both assays, for example, against two different cellular targets in, for example, a single cell-type.