Grace Bio-labs, Inc.

Other

Charles M McGrath

Jennipher Lyn Grudzien

Herbert D Soule

Florian Gene Bell

Michael Albert Shultz

An approach is described that combines distinct properties of a specialized porous nitrocellulose film (PNC) with quantum nanoparticles to create an improved assay and detection sensitivity, permitting the development of a camera-based imaging system for fluorescent detection of macromolecules in microarray format. The two properties of PNC that facilitate the approach are an extraordinarily high binding capacity and a newly observed internal scattering of light. Quantum nanoparticles complement these PNC properties by providing a higher level of emitted light than the fluorescent dyes in common microarray use. Overall, the approach allows for instrument cost savings, reduced imaging time, and the ability to remotely image.

Protein microarray assay imager

A reaction surface array diagnostic apparatus and method of making the same includes a substrate carrying a plurality of reaction surfaces, a plate and a gasket, each having a plurality of through bores, alignable with one of the reaction surfaces and forming a fluid tight well about each reaction surface when the gasket and the plate are sealingly affixed to the substrate to form a stack. Clamp members engage opposite side edges of a stack to compress the gasket. A plurality of side-by-side disposed clamped stacks of plates, gaskets and substrates are mounted in a tray in the standard footprint of a microtitre plate. Alternately, the plate and the gasket are combined into a single plate formed of a flexible material having an adhesive on one surface.

Reaction surface array diagnostic apparatus

A reaction surface array diagnostic apparatus includes a substrate carrying a plurality of reaction surfaces and, a plate having a plurality of wells, alignable with one of the reaction surfaces and forming a fluid tight well about each reaction surface when the plate and the substrate are sealingly affixed to each other in a frame. The plate is formed of a flexible material which may have an adhesive on one surface. Interlocking latch members are formed on the plate and the frame for releasably latching the plate and the frame in a position for sealing attachment to the substrate.

Reaction surface array diagnostic apparatus including a flexible microtitre plate

A reaction surface array diagnostic apparatus and method of making the same includes a substrate carrying a plurality of reaction surfaces, a plate and a gasket, each having a plurality of through bores, alignable with one of the reaction surfaces and forming a fluid tight well about each reaction surface when the gasket and the plate are sealingly affixed to the substrate to form a stack. Clamp members engage opposite side edges of a stack to compress the gasket. A plurality of side-by-side disposed clamped stacks of plates, gaskets and substrates are mounted in a tray in the standard footprint of a microtiter plate. Alternately, the plate and the gasket are combined into a single plate formed of a flexible material having an adhesive on one surface.

Immortalized human epithelial cell sublines are provided. The novel cell lines do not undergo terminal differentiation and senescence upon exposure to high calcium concentrations. The novel cells exhibit positive reactivity with milk-fat globule membrane antigen and cytokeratin anti-serum. The cells are non-tumorigenic in athymic mice, and exhibit both three-dimensional growth in collagen and dome formation in confluent cultures. The cell sublines demonstrate growth control by hormones and growth factors. The novel cell sublines are useful in evaluating the capacity of preselected agents to bring about a change in epithelial cell growth and in the production of proteins.

Immortal human mammary epithelial cell lines

A probe clip for in situ assay of tissue sections in the form of a plate having a first seal member mounted thereon and forming an interior cavity on the plate. In one embodiment, a second seal member is mounted interiorly of the first seal member and divides the interior cavity into first and second fluid communicatable surfaces, with a probe dryingly attached to the plate and disposed on the second mixing surface. The plate is joined to a slide carrying a tissue section and a reactant fluid such to form fluid communicatable reaction and mixing chambers. Successive rotations of the joined plate and slide causes the reactant fluid to initially flow to the mixing chamber and release the probe, before the probe flows to the reaction chamber for reaction with the tissue section. In another embodiment, a time-release material covers the probe mounted on a plate having a single chamber. The reactant fluid hydrolyzes the time-release material to release the probe for reaction with the tissue. The cassette carrying one or more plates is slidingly insertable into a semi-closed housing containing one or more tissue-carrying slides. Clamps urge the probe clip cassette and the individual plates into engagement with the slides to form the sealed chambers therebetween. Inlet and outlet wash ports communicate with the slides to wash the slides after the plates have been removed from the housing.

Growing community of inventors

Bend, OR, United States of America

Charles M McGrath