The present disclosure relates to the acceleration of hematopoietic compartment reconstitution in a subject in need of hematopoietic stem cell transplantation by administering a composition having a protein transduction domain-MYC (PTD-MYC) fusion protein in combination with hematopoietic stem cell transplantation and to the enhancement of hematopoietic compartment autoreconstitution in a subject in need thereof by administering a composition having a protein transduction domain-MYC (PTD-MYC) fusion protein.

The present invention provides compositions comprising a protein expression blocker or PEBL comprising a target-binding molecule and localizing domain, and methods of using such compositions in cancer therapy. PEBLs are useful as a blockade of expression of target surface receptors (peptides or antigens) in immune cells. Also provided herein are CD3/TCR??-deficient T cells and CD3/TCR??-deficient chimeric antigen receptor T cells that express such PEBLs.

The present invention provides compositions comprising a protein expression blocker or PEBL comprising a target-binding molecule and localizing domain, and methods of using such compositions in cancer therapy. PEBLs are useful as a blockade of expression of target surface receptors (peptides or antigens) in immune cells. Also provided herein are CD3/TCR??-deficient T cells and CD3/TCR??-deficient chimeric antigen receptor T cells that express such PEBLs.

Methods, compositions, and kits for generating therapeutically relevant populations immunosuppressive T-reg cells and uses thereof are disclosed.

Methods and compositions for increasing the suppressive function of regulatory T-cells (Tregs) are provided.

The present invention provides methods and compositions for converting non-Tregs into Tregs. The converted Tregs are referred to as inducible Tregs (iTregs). The iTregs are useful for preventing, suppressing, blocking or inhibiting an immune response. For example the iTregs are useful for preventing rejection of a transplanted tissue in a human or other animal host, or protecting against graft vs host disease. The iTregs can also be used to treat autoimmune diseases.

Disclosed are methods, compositions of matter, and kits useful for augmentation of cells through modification of cellular membrane properties following ex vivo treatment.

Methods and compositions are provided for combined transplantation of a solid organ and hematopoietic cells to an HLA mismatched recipient, where tolerance to the graft is established through development of a persistent mixed chimerism. An individual with persistent mixed chimerism, usually for a period of at least six months, is able to withdraw from the use of immunosuppressive drugs after a period of time sufficient to establish tolerance.

Genetically modified compositions, such as non-viral vectors and T cells, for treating cancer are disclosed. Also disclosed are the methods of making and using the genetically modified compositions in treating cancer.

The invention relates to a new method for in vitro expansion of CD4+CD25.sup.HighCD127.sup./LOWfoxP3+Tregs, wherein the process of Treg expansion takes place permanently or temporarily at a temperature below 37 C., optimally at a temperature of 33 C., the isolated Tregs are expanded in SCGM or X-vivo-20 medium supplemented with human serum or with foetal bovine serum, and magnetic beads coated with anti-CD3 and anti-CD28 antibodies at 1:1 (cell:bead) ratio and interleukin-2 are added to the culture.