Disclosed herein are new, useful, and non-obvious means of stimulating therapeutic angiogenesis, or conditions favorable for stimulation of therapeutic angiogenesis utilizing T regulatory cells. One disclosed method includes administering a population of T regulatory cells into an area of hypoxia to stimulate angiogenesis. T regulatory cells are generated and expanded by culture with mesenchymal stem cells, with either population or both populations together administered into the hypoxic area.

The present invention provides an in vitro method for obtaining and purifying regulatory T cells from thymic tissue (or thyTreg cells), which makes it possible to obtain more than 10 billion cells from a single thymus. These thyTregs obtained in the invention have a purity of more than 95% and very high suppressive capacity, survival and viability, in addition to being safe from a clinical viewpoint. The foregoing would not require the use of massive ex vivo cell expansion protocols. The transfer of these thyTreg cells to patients enables immune tolerance induction. Thus, said cells may be used as cell therapy to induce immune tolerance in the treatment and/or prevention of transplant rejections and in autoimmune diseases.

The present disclosure provides improved compositions for adoptive T cell therapies for treating, preventing, or ameliorating at least one symptom of a cancer, infectious disease, autoimmune disease, inflammatory disease, and immunodeficiency, or condition associated therewith.

The present invention generally relates to methods of preparing leukocytes, particularly T cells, ex vivo for use in immunotherapy, particularly cancer immunotherapy. More specifically, the invention relates to methods for the preparation of leukocytes exhibiting cytotoxic properties for use in adoptive cell transfer. The invention also relates to cells and compositions including them for cancer immunotherapy. The invention also relates to methods of immunotherapy, particularly cancer immunotherapy. The present invention relates to a method for producing a leukocyte that has an enhanced capacity for killing a target cell, the method including contacting the leukocyte with a PTPN2 inhibitor in conditions for enabling the inhibitor to inactivate PTPN2 in the leukocyte, thereby producing a leukocyte that has an enhanced capacity for killing a target cell. Preferably, the leukocyte is contacted with the PTPN2 inhibitor in the absence of a T helper cell.

This document relates to methods and materials for treating a mammal having an autoimmune disease. For example, materials and methods for producing a T cell comprising a FOXP3 polypeptide. Methods and materials for treating a mammal having an autoimmune disease comprising administering to a mammal having an autoimmune disease an effective amount of a T cell are also provided herein.

This invention relates to the production of a population of TCR αβ+ T cells by a method comprising (i) differentiating a population of haematopoietic progenitor cells (HPCs) into progenitor T cells and (ii) maturing the progenitor T cells to produce a population of TCR αβ+ T cells. One or both of steps (i) and (ii) are performed in the presence of Inducible Co-stimulator ligand (ICOS-L). The presence of ICOS-L in steps (i) and/or (ii) may increase expression of αβ T cell receptors and/or increase the proportion of HPCs or progenitor T cells that mature into TCR αβ+ cells. This may be useful for example in the production of T cells for immunotherapy.

Provided are methods for processing a blood related sample comprising: (a) providing a blood related sample comprising one or more target cells, platelet cells, red blood cells; and (b) reducing a number of the platelet cells in the blood related sample while maintaining a ratio of the red blood cells to the one or more target cells above a critical threshold to produce a reduced platelet blood related sample comprising the one or more target cells. Also described herein are cell compositions produced by applying the methods described herein.

The invention provides improved T cell compositions and methods for manufacturing T cells. More particularly, the invention provides methods of T cell manufacturing that result in adoptive T cell immunotherapies with improved survival, expansion, and persistence in vivo.

Disclosed herein is a T-helper cell (“T.sub.H-GM” cell) that is regulated by IL-7/STAT5 and which secrete GM-CSF/IL-3. Also disclosed are methods and compositions for modulating T.sub.H-GM function for the treatment of, e.g., inflammatory disorders. Diagnostic and prognostic methods for specifically identifying T.sub.H-GM-mediated inflammatory disorders (e.g., rheumatoid arthritis), as distinct from and/or in addition to non-T.sub.H-GM-mediated (e.g., TNF-α-mediated) inflammatory disorders, are also provided.

Platforms comprising at least one lymphocyte affecting molecule and at least one molecular complex that, when bound to an antigen, engages a unique clonotypic lymphocyte receptor can be used to induce and expand therapeutically useful numbers of specific lymphocyte populations. Antigen presenting platforms comprising a T cell affecting molecule and an antigen presenting complex can induce and expand antigen-specific T cells in the presence of relevant peptides, providing reproducible and economical methods for generating therapeutic numbers of such cells. Antibody inducing platforms comprising a B cell affecting molecule and a molecular complex that engages MHC-antigen complexes on a B cell surface can be used to induce and expand B cells that produce antibodies with particular specificities.