Angle Europe Limited

Tomoyuki Sen

Alexandre M Izmailov

Brian Pak

Paul D Smith

Paul Timothy Smith

The present disclosure provides a method of cell sedimentation and retention of target cells, for example circulating tumour cells, CTC, from a fluid sample onto a solid support. The method comprises placing a fluid medium comprising the target cells in a fluid chamber, the fluid chamber having an open end sealed against a surface of the solid support. The method further comprises subjecting the fluid medium to centrifugation within the fluid chamber to induce sedimentation of the target cells and promote cell adhesion to the surface of the solid support. The method further comprises, post-centrifugation, positioning a fluid absorbing element in the fluid chamber to remove fluid from the fluid chamber. The method further comprises controlling a flow rate of the fluid being absorbed by the fluid absorbing element such that the sedimented cells are not detached from the surface of the solid support.

Cell recovery method and device

The present disclosure provides a cell harvesting method and device for the efficient sedimentation and retention of cells from liquid samples onto a solid support with low cell losses and low impact on cell morphology. The device has two configurations, one being for use in a centrifuge to centrifuge the sample, a second for controlled release of the liquid post centrifugation. The device includes a base to hold a solid support that receives cells on a top surface thereof that releasably holds a fluid chamber which has a first opening with a gasket surrounding the opening with that bears against a top surface of the support. An opening receives the liquid sample and the gasket defines an area into which the targeted cells deposit. A first cap closes the second opening during centrifugation. Post centrifugation the first cap is removed and a fluid absorbing element and cap, designed to provide controlled removal of the liquid and to prevent positioning of a tip of the absorbing element to a distance from the solid support shorter than a predefined distance is inserted into the fluid chamber.

The present disclosure provides a cell harvesting method for the efficient sedimentation and retention of cells from liquid samples onto a solid support with low cell losses and low impact on cell morphology.

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Toronto, Canada

Tomoyuki Sen