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 humanized CD 19 antibody, and a chimeric antigen receptor thereof, an immune cell thereof and the use thereof are provided. The humanized CD19 antibody is based on a FMC63 chimeric antibody, which is subjected to humanization modification. A CAR-T and a dual CAR-T cell constructed based on the humanized antibody and the related use thereof are also provided. Compared with a CAR-T cell constructed by using FMC63, the CAR-T cell constructed based on the humanized antibody has higher killing effect and tumor removal ability.

Disclosed are compositions and methods for targeted treatment of SSTR-expressing cancers. In particular, chimeric antigen receptor (CAR) polypeptides are disclosed that can be used with adoptive cell transfer to target and kill SSTR-expressing cancers. Also disclosed are immune effector cells, such as T cells or Natural Killer (NK) cells, that are engineered to express these CARs. Therefore, also disclosed are methods of providing an anti-tumor immunity in a subject with a SSTR-expressing cancer, such as a neuroendocrine tumor, that involves adoptive transfer of the disclosed immune effector cells engineered to express the disclosed CARs.

The disclosure provides for artificial signal peptides generated by systems and methods utilizing deep learning.

Provided are methods and compositions for obtaining functionally enhanced derivative effector cells obtained from directed differentiation of genomically engineered iPSCs. The derivative cells provided herein have stable and functional genome editing that delivers improved or enhanced therapeutic effects. Also provided are therapeutic compositions and the use thereof comprising the functionally enhanced derivative effector cells alone, or with antibodies or checkpoint inhibitors or additional cells in combination therapies.

Disclosed herein are ACE2-Fc fusion polypeptides that contain at least one binding site for a spike protein of a coronavirus and methods of using such for therapeutic and/or diagnostic purposes. Also provided herein are methods for producing such fusion polypeptides.

Provided herein are immunoresponsive cells having IL-1 superfamily activities with spatiotemporal restriction. The immunoresponsive cells can further express a protease for regulating the IL-1 superfamily activities, and a chimeric antigen receptor (CAR) or a parallel CAR. Also provided herein are methods of preparing the immunoresponsive cells and methods of directing T cell mediated immune response using the immunoresponsive cells.

The invention relates to an N-terminal extension sequences which are employed to enhance the expression of recombinant therapeutic peptides. The invention also relates to a process for the high-level expression of recombinant therapeutic peptides using the said N-terminal extension sequence. The invention also provides nucleic acids, vectors and recombinant host cells for efficient production of biologically active proteins such as lirapeptide.

The present invention relates, in part, to agents that bind PD-L1 and their use as diagnostic and therapeutic agents. The present invention further relates to pharmaceutical compositions comprising the PD-L1 targeting moiety and their use in the treatment of various diseases.

Provided is application of chimeric antigen receptor (CAR)-modified T (CART) cells in preparing drugs for cancer treatment, the CART cells contain an artificially-introduced costimulatory signal transduction domain, and the CART cell does not contain an artificially-introduced first signal transduction domain.