Disclosed herein are methods for treating cancer comprising administering CAR-modified immune cells and at least one Retinoic Acid Receptor agonist.

The present invention relates to a recombinant vector, characterized by including a cytotoxic T-lymphocyte-associated protein-4 (CTLA-4)-targeting trans-splicing ribozyme expression cassette for delivery of chimeric antigen receptor, wherein the expression cassette includes: (i) a CTLA-4-targeting trans-splicing ribozyme; and (ii) a polynucleotide encoding a chimeric antigen receptor ligated to the 3 exon of the ribozyme. The present invention also relates to a transformed cell into which the recombinant vector is introduced, a ribozyme expressed from the recombinant vector, a retrovirus expressing the ribozyme, and a T cell treated with the retrovirus. Furthermore, the present invention relates to a pharmaceutical composition for preventing or treating cancers, in which the pharmaceutical composition includes the recombinant vector, the transformed cell, the ribozyme, the retrovirus, the T cell, or a combination thereof; and a method for treating cancers, in which the method includes administering, to an individual in need thereof, the recombinant vector, the transformed cell, the ribozyme, the retrovirus, the T cell, or a combination thereof. The recombinant vector of the present invention and the ribozyme expressed therefrom become a gene-cell therapy which inhibits CTLA-4 on T cells which has been an obstacle in conventional anti-cancer therapies and, at the same time, enables anti-cancer treatment, thereby allowing more effective anti-cancer effects to be anticipated. Such a gene-cell therapy results in decreased toxicity in normal tissues and thus exhibits increased effects in both therapeutic efficacy and safety, which enables it to be widely utilized in the field of gene therapy in the future.

An embodiment of the invention provides a chimeric antigen receptor (C AR) comprising an antigen binding domain specific for FLT3, a transmembrane domain, and an intracellular T cell signaling domain. Nucleic acids, recombinant expression vectors, host cells, populations of cells, antibodies, or antigen binding portions thereof, and pharmaceutical compositions relating to the CARs are disclosed. Methods of detecting the presence of a proliferative disorder, e.g., cancer, in a mammal and methods of treating or preventing a proliferative disorder, e.g., cancer, in a mammal are also disclosed.

Generation and identification of highly effective immune effector cell in terms of target cell-killing activity can be enhanced by optimizing the proximity between a target cell and the immune effector cell. The cancer-killing T cells described herein can provide highly effective therapies for diverse cancer types, e.g., solid cancers, hematological cancers, and metastatic forms thereof. Provided herein are ex-vivo methods of generating cancer-killing T cells, compositions comprising such immune cells; methods of using the cells, methods of selecting optimal agents for enhancing the target cell killing activity, methods of selecting an optimized immune cell and methods of using this approach to evaluate patient responsiveness to other cancer therapies.

Disclosed herein are methods of providing an anti-tumor immunity in a subject with a CD83-expressing cancer that involves adoptive transfer of the immune effector cells engineered to express chimeric antigen receptor (CAR) polypeptides that selectively bind CD83-expressing cancers. Also disclosed herein are dual-CAR systems to increase safety and/or efficacy of the CAR-T cells.

The present disclosure provides chimeric receptor constructs comprising a CD3e extracellular domain and engineered NK and T cells expressing such receptors and methods of making and using same for the treatment of cancer and other diseases of the immune system.

Provided herein are chimeric proteins comprising an antigen-binding domain specific for V-Set And Immunoglobulin Domain Containing 2 (VSIG2). Also provided herein are cells, polynucleotides, vectors, compositions, and methods directed to chimeric proteins comprising an antigen-binding domain specific for VSIG2.

The disclosure relates to systems of two engineered receptors each having a ligand binding domain, collectively designed to target cells identified by loss of heterozygosity and used to treat a disease or disorder, for example, cancer. The disclosure provides immune cells expressing two engineered receptors, methods of making same, and polynucleotides and vectors encoding same.

Described herein are methods for selecting lymphocytes for adoptive cell therapy based on P-glycoprotein expression and compositions comprising same.

A chimeric antigen receptor targeting to CD47, its encoding sequence, and its modified immune response cells, and the preparation and application thereof. The present invention constructs a chimeric antigen receptor targeting to CD47 and its modified immune response cells based on the SIRP molecule, and the novel modified immune response cells can effectively target a variety of tumor cells, and can be used to prepare preparations for the treatment of tumors, especially the preparations for inhibiting the expression of CD47-positive tumor cells. The preparation of the modified immune response cells of the target CD47 is easy, and the modified immune response cells of the target CD47 have high killing rate on tumor cells.