Described herein are immunoresponsive cells which are useful for their preventive and therapeutic potential against autoimmune diseases and rejections of solid organ transplants.

The present disclosure provides an antibody for inducing immune tolerance, an induced lymphocyte, and a cell therapy agent therapeutic method using the induced lymphocyte. Specifically, the present disclosure provides an antibody that inhibits the interaction between CD80 and/or CD86 expressed on the surface of a certain cell and CD28 expressed on the surface of another cell, and substantially does not induce immune activation-induced cytokines. In a specific embodiment, the Fc portion of the antibody substantially does not produce the immune activation-induced cytokines.

The present invention is defined by the claims. In particular, the present invention relates to the use of TCR-deficient CAR-Tregs in combination with anti-TCR complex monoclonal antibodies for inducing durable tolerance.

The present invention discloses populations of T cells expressing a chimeric antigen receptor (CAR), wherein said T cells are placental T cells derived from cord blood, placental perfusate, or a mixture thereof. Such populations of cells are shown to be improved in a number of aspects over alternative populations of cells such as those derived from peripheral blood mononuclear cell T cells. It also discloses methods of treating cancer, such as a hematologic cancer, e.g., a B cell cancer, or a symptom thereof in a patient in need thereof. These methods comprise administering to the patient an amount of the population of T cells of any one of the invention effective to alleviate the cancer or symptom thereof in the patient.

The present disclosure provides the use of fratricide-resistant chimeric antigen receptor T (CAR-T) cells targeting antigens expressed by T cell malignancies.

Provided herein are peptide amphiphiles (PAs). In some embodiments, provided herein are targeting PAs comprising a PA backbone and a targeting moiety. In some embodiments, the peptide amphiphiles are assembled into nanofibers. In some embodiments, provided herein are cells coated with a targeting PA or a nanofiber comprising the same, and methods of use thereof.

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

A method of isolating monocyte populations of cells and inducing apoptosis in these populations without production of pro-inflammatory mediators is disclosed. The method comprises isolating the monocytes and, subjecting them to substrate-adherence and serum deprivation conditions. Apoptotic monocytes as prepared are useful for treating inflammation-associated diseases.

Methods and compositions are provided for combined transplantation of a solid organ and hematopoietic cells to a 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.

The invention relates to an peptide derived from a polymorphic region of donor MHC class II molecules which induces tolerance and thus prevents transplant rejection in a patient in need thereof. The invention relates to an isolated peptide of 15 or 16 amino acids long that comprises or consists of the amino acid sequence: REEYARFDSDVGEYR (SEQ ID NO: 1) or a function-conservative variant for use as drug. The invention relates to an in vitro method for determining whether a transplanted patient is tolerant, comprising a step of determining the presence of CD8.sup.+CD45RC.sup.low Tregs in a biological sample obtained from said transplanted patient, wherein the presence of CD8.sup.+CD45RC.sup.low Tregs is indicative of tolerance.