Provided herein are inhibitory chimeric antigen receptor compositions and cells comprising such compositions. Also provided are methods of using inhibitory chimeric antigen receptors and cells.

A vector comprising a first polynucleotide encoding a FOXP3 polypeptide and a second polynucleotide encoding a chimeric antigen receptor (CAR), wherein the CAR comprises an antigen recognition domain which specifically binds to a human leukocyte antigen (HLA), wherein the first polynucleotide and the second polynucleotide are operably linked to the same promoter, and wherein the first polynucleotide is upstream of the second polynucleotide.

Anti-BCMA antibodies and chimeric antigen receptors (CARs) are provided. Immune cells expressing the anti-BCMA CAR can be used to treat cancer. The anti-BCMA antibodies and CARs can recognize the extracellular domains of human BCMA. The anti-BCMA CAR T cells show specific cytotoxicity towards BCMA-positive target cells.

The present is directed to compositions comprising regulatory T cell epitopes, wherein said epitopes comprise a polypeptide comprising at least a portion of SEQ NOS: 1-73, fragments and/or variants thereof, as well as methods of producing and using the same.

The disclosure relates to fusion proteins comprising a tBID polypeptide and a steroid hormone receptor domain, and methods of using same to induce apoptosis in cells.

The present disclosure relates to cells capable of co-expressing T cell receptors (“TCR”) together with membrane-bound IL-15 polypeptides and/or CD8 polypeptides and the use thereof in adoptive cellular therapy. The present disclosure further provides for modified IL-15, IL-15Rα, IL-15/IL-15Rα fusion polypeptide, and IL-15Rα/IL-15 fusion polypeptide sequences, vectors, and associated methods of making and using the same. The present disclosure further provides for modified CD8 sequences, vectors, and associated methods of making and using the same.

Provided is an engineered T cell. The expression of a TCR/CD3 complex on the cell surface is reduced by means of introducing a polypeptide that down-regulates the expression of the TCR/CD3 complex on the cell surface into the cell. The engineered T cell can be used for therapeutic purposes, such as treatment of cancers.

Provided herein, inter alia, are methods and compositions for treating or preventing graft-versus-host disease. The methods include administering to a tissue transplant recipient a composition comprising a donor-derived regulatory T cell.

Provided herein, inter alia, are compositions and methods for reprogramming immune cells for treating or preventing immune disorders. The methods include contacting immune cells with antigens, and administering the resultant immune cells to a subject who has an immune disorder.

The present disclosure describes systems and methods for immunotherapies Immune cells can be engineered to exhibit enhanced half-life as compared to control cell (e.g., a non-engineered immune cell). Immune cells can be engineered to exhibit enhanced proliferation as compared to a control cell. Immune cells can be engineered to effectively and specifically target diseased cells (e.g., cancer cells) that a control cell otherwise is insufficient or unable to target. The engineered Immune cells disclosed herein can be engineered ex vivo, in vitro, and in some cases, in vivo. The engineered Immune cells that are prepared ex vivo or in vitro can be administered to a subject in need thereof to treat a disease (e.g., myeloma or solid tumors). The engineered Immune cells can be autologous to the subject. Alternatively, the engineered immune cells can be allogeneic to the subject.