In certain embodiments, this disclosure provides methods to generate DNA, RNA and/or DNA-peptide nanostructures based chimeric antigen receptor (CAR) T cell (engineered T cell) for cancer immunotherapy, and compositions made by these methods.

The present application discloses a method of determining suitability of treating a patient suffering from cancer or metastasis of cancer characterized by aberrant expression of MUC1, with a MUC1* targeting therapeutic.

Antibodies specific to MUC18 (a.k.a. MCAM or CD146) and uses thereof for therapeutic and diagnostic purposes are provided. Also provided herein are chimeric antigen receptors (CARs) comprising an extracellular antigen-binding fragment that binds MUC18 and immune cells expressing such.

The present disclosure relates to chimeric Tim4 receptors, host cells modified to include chimeric Tim4 receptor molecules, and methods of making and using such receptor molecules and modified cells.

Antibodies specific to MUC18 (a.k.a. MCAM or CD146) and antibody-drug conjugates (ADCs) comprising such. Also provided herein are uses the the anti-MUC18 antibodies or ADCs for therapeutic and diagnostic purposes.

The present disclosure provides methods for treating a progressive ovarian cancer using an allogeneic leukemia-derived cell. Also provided are immunogenic compositions comprising an allogeneic leukemia-derived cell, and pharmaceutical compositions and formulations thereof.

The invention relates to a T cell expressing an antibody or comprising the coding sequence of the antibody or an expression vector thereof; the antibody contains an optional signal peptide, an antigen binding sequence and a mutant type Fc segment, wherein the mutant type Fc segment is a Fc segment in which amino acid residues at the 17th site and the 79th site of the IgG4 Fc segment shown by SEQ ID NO: 25 are mutated into E and Q respectively. Preferably, the T cell is a CAR-T cell. The present invention further relates to a treatment application of the T cell in malignant tumors.

The present invention provides compositions and methods for inducing a CAR mediated trans-signal in a T cell. The trans-signaling CAR T cells comprise a first CAR having a first signaling module and a second CAR having a distinct second signaling module. The present invention also provides cells comprising a plurality of types of CARs, wherein the plurality of types of CARs participate in trans-signaling to induce T cell activation.

A reversibly gated effector polypeptide e.g. a chimeric antigen receptor (protease-activating CD45-gate CAR) comprising an extracellular CD45 recruiting domain, a protease-cleavable linker, and a polypeptide comprising an extracellular ligand binding domain, a transmembrane domain, and an intracellular domain. Nucleic acids including vectors and expression vectors that encode the protease-activating CD45-gate CAR and cells including immune cells such as T cells that comprise and express the nucleic acids. Methods of treatment of various conditions including various forms of cancer comprising administering the cells including CAR T cell therapy. In some embodiments, the CD45 gate at least partially inhibits activation of the protease-activating CD45-gate CAR when the protease-activating CD45-gate CAR binds antigen. The inhibition is at least partially diminished, relieved and/or eliminated when the protease-activating CD45-gate CAR is exposed to a protease that can cleave the linker.

Disclosed herein are compositions comprising an interleukin-18 (IL-18) receptor amino acid sequence that comprises an IL-18 receptor extracellular domain or a polynucleotide that encodes an IL-18 receptor amino acid sequence that comprises an IL-18 receptor extracellular domain and a chimeric antigen receptor (CAR) amino acid sequence or a polynucleotide that encodes a CAR amino acid sequence. In some embodiments the CAR targets MUC1 or MUC1*.