Rhone-poulenc Rorer Pharmaceuticals Inc.

Asterias Biotherapeutics, Inc.

Geron Corporation

Applied Immunesciences, Inc.

University of Minnesota

Aventis Pharmaceuticals Inc.

Jane S Lebkowski

Thomas B Okarma

Maureen A McNally

Ramila Philip

Joseph D Gold

Anish Sen Majumdar

Anita Reddy

Suyi Tseng

Edward D Wirth, Iii

Ross M Okamura

Kevin Nishimoto

Chunhui Xu

Ramkumar Mandalam

Nathan C Manley

John E Wagner

Catherine Ann Priest

Catherine A Priest

Yan Li

The present disclosure provides methods and compositions for making and using pluripotent stem cell-derived oligodendrocyte progenitor cells. Provided herein are a population of oligodendrocyte progenitor cells (OPCs) derived from pluripotent stem cells, methods of generating the same for use in the treatment of acute spinal cord injury and other conditions affecting the CNS, and containers including the population of OPCs.

Pluripotent stem cell-derived oligodendrocyte progenitor cells for the treatment of spinal cord injury

The invention provides methods of differentiating primate pluripotent stem cells into cells of hematopoietic lineage. The invention further provides hematopoietic lineage cells differentiated from primate pluripotent stem cells, as well as methods of using the same and kits comprising the same.

Differentiation of primate pluripotent stem cells to hematopoietic lineage cells

The present disclosure provides methods and compositions for making and using pluripotent stem cell-derived oligodendrocyte progenitor cells.

The invention provides methods for depleting extraneous phenotypes from a mixed population of cells comprising the in vitro differentiated progeny of primate pluripotent stem cells. The invention also provides mixed cell populations enriched for a target cell phenotype where the mixed cell population comprises the differentiated in vitro progeny of primate embryonic stem cells.

Differentiated pluripotent stem cell progeny depleted of extraneous phenotypes

This invention provides a system for producing differentiated cells from a stem cell population for use wherever a relatively homogenous cell population is desirable. The cells contain an effector gene under control of a transcriptional control element (such as the TERT promoter) that causes the gene to be expressed in relatively undifferentiated cells in the population. Expression of the effector gene results in depletion of undifferentiated cells, or expression of a marker that can be used to remove them later. Suitable effector sequences encode a toxin, a protein that induces apoptosis; a cell-surface antigen, or an enzyme (such as thymidine kinase) that converts a prodrug into a substance that is lethal to the cell. The differentiated cell populations produced according to this disclosure are suitable for use in tissue regeneration, and non-therapeutic applications such as drug screening.

Isolated in vitro cell population comprising primate pluripotent stem cells containing a nucleic acid construct and differentiated progeny of the pluripotent stem cells

In vitro differentiated cell and human embryonic stem cell population

A composition for genetic manipulation of cells comprises a liposome comprised of lipid material, and adeno-associated viral (AAV) material. Typically, the AAV material is plasmid, and comprises one or more terminal repeats of the AAV genome. Methods are disclosed for introducing DNA into cells using AAV/liposome complexes. The DNA is introduced and expressed in'stem cells, T cells, primary tumor cells, tumor cell lines and dendritic cells or other antigen-presenting cells. Such transfected cells are used in therapeutic methods to treat subjects with cancer or microbial infections. Dendritic cells with DNA encoding tumor or viral antigens and are used to treat subjects with tumors or viral infections by administration in vivo or by activation of antigen-specific lymphocytes ex vivo followed by administration of those lymphocytes to the subject.

Adeno-associated viral liposomes and their use in transfecting dendritic cells to stimulate specific immunity

This invention provides a system for producing differentiated cells from a stem cell population for use wherever a relatively homogenous cell population is desirable. The cells contain an effector gene under control of a transcriptional control element (such as the TERT promoter) that causes the gene to be expressed in relatively undifferentiated cells in the population. Expression of the effector gene results in depletion of undifferentiated cells, or expression of a marker that can be used to remove them later. Suitable effector sequences encode a toxin, a protein that induces apoptosis, a cell-surface antigen, or an enzyme (such as thymidine kinase) that converts a prodrug into a substance that is lethal to the cell. The differentiated cell populations produced according to this disclosure are suitable for use in tissue regeneration, and non-therapeutic applications such as drug screening.

Methods for providing differentiated stem cells

A composition for genetic manipulation which comprises a liposome comprised of lipid material, and adeno-associated viral (AAV) material. Typically, the AAV material is plasmid, and comprises a terminal repeat of the AAV genome. Methods are disclosed for introducing genetic material into cells by use of AAV liposomes. Accordingly, genetic material was introduced and integrated into stem cells, T cells, primary tumor cells, or tumor cell lines.

Adeno-associated viral (AAV) liposomes and methods related thereto

A cell population which is composed of cells bearing the stem cell marker CD34 and which are small in size and have little granulation are obtained by separating low density mononuclear hematopoietic cells according to size and then selecting for CD34.sup.+ cells in the smallest size fraction. The size of the cell population corresponds to that obtained at a flow rate of 25-29 ml/min in a counterflow elutriation method using a rotor equivalent to Beckman JE 5.0 spun at 900.times.g. This population of cells consists essentially of very early progenitor cells and the cells are useful in autologous bone marrow transplantation as well as gene therapy.

Pluripotential quiescent stem cell population

Simplified methods to produce recombinant adeno-associated virus (rAAV) vectors are described. The methods involve the use of chimeric plasmids which incorporate the Epstein Barr nuclear antigen (EBNA) gene, the latent origin of replication of Epstein Barr virus (oriP), and a rAAV genome. The chimeric plasmids themselves are also a part of the present invention. These plasmids are maintained as multicopy extra-chromosomal elements in cells, such as human 293 cells. Permanent cell lines carrying these EBV/AAV plasmids are induced to produce large amounts of rAAV upon addition of wild-type, adeno-associated virus helper functions. Vectors produced in this manner are capable of transducing exogenous genes into other human cell lines and exhibit the attributes of viral elements produced by conventional methods.

Growing community of inventors

Portola Valley, CA, United States of America

Jane S Lebkowski