Stemcell Technologies Inc.

Magnetix Biotechnology, Inc.

Terry Thomas

Peter Michael Lansdorp

Carrie E Peters

Connie J Eaves

Steven M Woodside

Andrew Mark Angus

Graeme Cross

Emer Clarke

A method of pipetting comprises (a) providing a pipette tip holder having a plurality of segregated compartments and a tip support member for supporting a plurality of pipette tips in the pipette tip holder, the tip support member configured to support a single pipette in tip each segregated compartment; (b providing a plurality of pipette tips in the tip support member; (c) removing a first pipette tip from a first segregated compartment; (d) using the first pipette tip to complete a pipetting operation and placing the first pipette tip into a segregated compartment that has not contained a used pipette tip; (e) subsequently removing the first pipette tip from the segregated compartment and using the first pipette tip to complete another pipetting operation; and, (f) replacing the first pipette tip into the pipette tip holder, whereby the first pipette tip, when placed in the segregated compartment, is segregated in the pipette tip holder to reduce the possibility of a fluid from the first pipette tip contacting other pipette tips in the pipette tip holder.

Method of pipetting using a pipette tip holder

The present invention relates to methods for separating cells using immunorosettes. The method involves contacting a sample containing nucleated cells and red blood cells with an antibody composition which allows immunorosettes of the nucleated cells and the red blood cells to form. The antibody composition preferably contains bifunctional antibodies or tetrameric antibody complexes.

Method for separating cells using immunorosettes

The present invention relates to antibody composition that are useful in preparing enriched mesenchymal progenitor cell preparations. The invention also relates to kits for carrying out the processes and to the cell preparations prepared by the processes.

Antibody compositions for preparing enriched mesenchymal progenitor preparations

The present invention relates to an antibody composition which contains antibodies specific for glycophorin A, CD2, CD3, CD14, CD15, CD16, CD19, CD24, CD56, CD66b and IgE antigens. A negative selection process is also provided for use on blood and bone marrow samples from a patient with chronic myeloid leukemia to recover cell preparations depleted of lineage committed cells. The invention also relates to kits for carrying out this process and to the cell preparations prepared by the process.

Antibody composition for debulking blood and bone marrow samples from CML patients

The present invention relates to antibody composition that are useful in preparing enriched cell preparations such as human hematopoietic progenitor cells and stem cells and non-hematopoietic tumor cells. The invention also relates to kits for carrying out the processes and to the cell preparations prepared by the processes.

Antibody compositions for preparing enriched dendritic cell preparations

Antibody compositions for preparing enriched cell preparations

The present invention relates to an antibody composition which contains antibodies directed to murine leukocyte and murine erythroid cells. This composition is used in a novel negative selection process to enrich for human hematopoietic cells from a sample from human-murine chimeric mice. The invention also relates to kits for carrying out this process.

Antibody composition for isolating human cells from human-murine chimeric hematopoietic cell suspensions

The present invention relates to an antibody composition which contains antibodies specific for glycophorin A, CD3, CD24, CD16, CD14, and optionally CD45RA, CD38, CD36, CD38, CD56, CD2, CD19, CD66e, CD66b, and/or antibodies specific for antigens expressed on non-hematopoietic tumor cells. A process is also provided for enriching and recovering human hematopoietic progenitor cells and stem cells in a sample containing human hematopoietic differentiated, progenitor, and stem cells, and optionally tumor cells. The process involves reacting the sample with an antibody composition containing antibodies capable of binding to the antigens glycophorin A, CD3 CD24, CD16, and CD14, and optionally CD45RA, CD36, CD38, CD56, CD2, CD19, CD66e, CD66b, and/or antibodies specific for antigen expressed on non-hematopoietic tumor cells under conditions so that cell conjugates are formed between the antibodies and differentiated cells having the antigens glycophorin A, CD3 CD24, CD16, and CD14, and optionally CD45RA, CD38, CD36, CD38, CD56, CD2, CD19, CD66e, CD66b, and/or antibodies specific for antigens expressed on non-hematopoietic tumor cells on their surfaces. The cell conjugates are removed and a cell preparation is obtained which is enriched in human hematopoietic progenitor cells and stem cells. The invention also relates to kits for carrying out this process and to the cell preparations prepared by the process.

Methods for preparing enriched human hematopoietic cell preparations

The present invention relates to an antibody composition which contains antibodies specific for glycophorin A, CD3, CD24, CD16, CD14, and optionally CD45RA, CD36, CD56, CD2, CD19, CD66a and/or CD66b. A process is also provided for enriching and recovering human hematopoietic progenitor cells and stem cells in a sample containing human hematopoietic differentiated, progenitor, and stem cells. The process involves reacting the sample with an antibody composition containing antibodies capable of binding to the antigens glycophorin A, CD3, CD24, CD16, and CD14, and optionally CD45RA, CD36, CD56, CD2, CD19, CD66a and/or CD66b under conditions so that cell conjugates are formed between the antibodies and differentiated cells having the antigens glycophorin A, CD3, CD24, CD16, and CD14, and optionally CD45RA, CD36, CD56, CD2, CD19, CD66a and/or CD66b on their surfaces. The cell conjugates are removed and a cell preparation is obtained which is enriched in human hematopoietic progenitor cells and stem cells. The invention also relates to kits for carrying out this process and to the cell preparations prepared by the process.

A device for separating magnetically labelled cells in a sample using an applied magnetic field having a housing; an inlet element at the top portion of the housing having an input end and an output end; a filter chamber adjacent to the output end of the inlet element for filtering the magnetically labelled cells from the fluid while allowing unlabelled cells to pass through when a magnetic field is applied thereto, and containing a multiplicity of magnetic matrix elements extending transversely across the filter chamber; and an outlet element for collecting the fluid which passes through the filter chamber having an input end coupled to the filter chamber and an output end. The device has one or more of the following features: (i) the inlet and/or outlet element having flow distribution means for distributing the flow from the inlet element generally uniformly across the filter chamber; (ii) the peripheries of the magnetic matrix elements are connected to the housing by a junction which is substantially impenetrable to the fluid; and (iii) the magnetic matrix elements are ordered and spaced apart so as to maximize the magnetic capture of magnetically labelled cells onto the magnetic matrix element when a magnetic field is applied. Methods of using the device and a hematopoietic cell preparation obtained using the device of the invention are also described.

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Vancouver, Canada

Terry Thomas