Embodiments of the disclosure encompass methods and compositions for producing engineered B cells. The disclosure concerns large-scale processes for producing B cells that are engineered to have disruption of expression of one or more genes using CRISPR and also express at least one heterologous antigen receptor. Specific embodiments include particular parameters for the process.

The present disclosure relates to compositions and methods for using cells having chemically-induced fusion protein complexes to spatially and temporally control immune cell signal initiation and downstream responses for treating disease. As a preferred example, the present disclosure relates to fusion polypeptides comprising (a) a first polypeptide comprising a first secretion signal, a first multimerization domain, a first transmembrane domain, and an actuator domain, (b) a viral self-cleaving polypeptide, and (c) a second polypeptide comprising a second secretion signal, a binding domain that comprises a single chain antibody, a receptor ectodomain, or a ligand, a second multimerization domain, and a second transmembrane domain.

Described herein is a chimeric antigen receptor (CAR) platform with the ability to (a) serve as an ON/OFF switch (with the ability for tenability/titrability), (b) sense multiple antigens and perform logic computations, and/or (c) independently regulate multiple signaling pathways. The compositions provided herein permit the degree of control and discrimination necessary to optimize CAR T cell therapy. Also described herein are cells comprising such compositions and the use of these compositions and/or cells in the treatment of cancer.

Provided is an antibody that specifically recognizes IL-13RA2, which can be used in the manufacture of a targeting anti-tumor medicament as well as a medicament for diagnosing a tumor.

The present invention provides a method for producing a nucleic acid molecule that can obtain a nucleic acid molecule that binds to a target and does not inhibit a function of the target. The production method for a nucleic acid molecule of the present invention is a method for producing a nucleic acid molecule that binds to a first biological molecule and does not inhibit a function of the first biological molecule, the method including the steps of: (A) bringing a candidate nucleic acid molecule into contact with the first biological molecule to select a nucleic acid molecule that has bound to the first biological molecule as a first selected nucleic acid molecule; and (B) selecting the first selected nucleic acid molecule as an intended nucleic acid molecule.

Provided herein are generalized extracellular molecule sensors (GEMSs) and polynucleotides encoding the GEMSs. Also provided herein are methods of making and using the GEMSs, such as therapeutic and diagnostic methods.

This invention provides chimeric antigen receptors (CARs) targeting human EphA3 and dual targeting CARs that bind to human EphA3 and to human mutant epidermal growth factor receptor variant III (EGFRvIII). This invention also relates to CAR-T cells comprising the provided CARs or the dual targeting CARs. Methods for treating a solid tumor cancer by administering the CARs are provided.

The present invention discloses an application of a β3 adrenergic receptor (ADRB3) as a marker for detecting a plurality of diseases, and an application of anti-human ADRB3 monoclonal antibody in diagnosing a disease and preparing a drug for treating the disease. The present invention finds through research that the ADRB3 is a key receptor in nerve-endocrine-immunoregulatory network, and an ADRB3-mediated signaling pathway regulates proliferation and differentiation of neutrophils, lymphocytes and tumor cells. Under normal circumstances, the ADRB3 maintains the non-specific immunocompetence and specific immunocompetence of an organism, and eliminates pathogenic microorganisms and aged organism tissues to play a role in protecting the organism and anti-aging. Under pathological conditions, excessive activation of the signaling pathway will cause systemic chronic inflammation, and destroy immune homeostasis. Therefore, the ADRB3 can be used as a diagnostic marker and a therapeutic target for a plurality of diseases. Anti-human ADRB3 antibody can specifically bond with the ADRB3, regulate the activity of the ADRB3, has the functions of resisting cancer, inflammation, poisoning, shock, allergy, viral infection, autoimmune disease, disease caused by regenerative dysfunction, autoimmune disease, cachexia, cardiovascular and cerebrovascular disease, neurodegenerative disease and aging, regulating autophagy, treating aging disease, etc., and has important medical value and research and application prospects.

Provided in the present invention are a specific antibody of BCMA and a BCMA-targeting immune effector cell, and also provided are a chimeric antigen receptor-modified T cell prepared using the antibody and the use thereof.

The present invention provides a chimeric antigen receptor having a structure of scFv(X)-(Y)CD 3zeta-MN.X comprises a tumor targeting antibody or a ligand or receptor capable of specifically binding to a tumor. Y is an intracellular region of a costimulatory receptor selected from ICOS, CD28, CD27, HVEM, LIGHT, CD40L, 4-1BB, OX40, DR3, GITR, CD30, SLAM, CD2, and CD226; M is an intracellular region of a gamma chain family cytokine receptor, the cytokine receptor being selected from IL2Ra, IL2Rb, IL4Ra, IL7Ra, IL9Ra, IL15Ra, and IL21Ra. N is an intracellular region of IL2Rg. The present invention further provides a CAR-T cell constructed from the recombinant expression vector of said chimeric antigen receptor, a preparation method therefor and the use thereof. The CAR-T cell of the present invention significantly improves tumor killing capacity and amplification capacity.