Abstract: Provided is a CD5-targeting fully human antibody or an antigen-binding fragment thereof, which specifically binds to CD5 with a high affinity, has a lower immunogenicity compared to heterologous antibodies, and has a good application potential in the development of antibody drugs, cell therapy drugs, detection reagents and the like.

Abstract: Provided is a fully human single-domain tandem chimeric antigen receptor (CAR) capable of specifically binding to a CD5 protein, which comprises a CD5 binding domain, a transmembrane domain, a co-stimulatory domain and an intracellular signaling domain. Also provided are engineered immune effector cells, such as T cells, comprising the chimeric antigen receptor, and use of the CAR and the engineered immune effector cells in the treatment of diseases or conditions associated with the expression of CD5.

Abstract: The present application provides an anti-CD5 antibody. The present application further provides a chimeric antigen receptor (CAR) that specifically binds to a CD5 protein, which comprises a CD5 binding domain, a transmembrane domain, a co-stimulatory domain and an intracellular signaling domain. Further provided are engineered immune effector cells (such as T-cells) comprising the chimeric antigen receptor. The present application further provides use of the CAR and the engineered immune effector cells in the treatment of diseases or conditions associated with the expression of CD5.

Abstract: A CD70 antibody and a chimeric antigen receptor (CAR) that can specifically bind to a CD70 protein. The CAR comprises a CD70 binding domain, a transmembrane domain, a costimulatory domain, and an intracellular signaling domain. Further disclosed is an application of the antibody and the CAR for treating diseases or conditions related to CD70 expression.