The present invention generally embraces the treatment of diseases by targeting cells expressing an antigen on the cell surface. In particular the invention relates to a method for stimulating, priming and/or expanding in vivo T cells genetically modified to express a chimeric antigen receptor (CAR) targeted to an antigen, comprising contacting the T cells with the antigen or a variant thereof in vivo. In one embodiment, the antigen or variant thereof is provided by administering a nucleic acid encoding the antigen or variant thereof.

The present invention provides immunoresponsive cells, including T cells, cytotoxic T cells, regulatory T cells, and Natural Killer (NK) cells, expressing at least one of an antigen recognizing receptor and one of a chimeric costimulatory receptor. Methods of using the immunoresponsive cell include those for the treatment of neoplasia and other pathologies where an increase in an antigen-specific immune response is desired.

Provided herein are compositions, methods, kits and systems for treating cells, tissues and subjects to alter age-related biology (e.g., to study or to treat age-related diseases and conditions). In particular, provided herein are compositions, methods, and uses for inhibition or modification of sialic acid or its cognate receptor to restore phagocytosis in aged cells.

The disclosure provides conjugates of an isolated humanized anti-CD22 antibody and PBD dimers.

Provided herein are methods for delaying or inhibiting T cell maturation or differentiation in vitro for a T cell therapy, comprising contacting one or more T cells from a subject in need of a T cell therapy with an AKT inhibitor and at least one of exogenous Interleukin-7 (IL-7) and exogenous Interleukin-15 (IL-15), wherein the resulting T cells exhibit delayed maturation or differentiation. In some embodiments, the method further comprises administering the one or more T cells to a subject in need of a T cell therapy.

The present disclosure provides methods comprising administering to the individual an effective amount of an agent that decreases or inhibits TIGIT expression and/or activity and an anti-cancer agent and/or an anti-cancer therapy. Further provided are kits comprising an anti-cancer agent, an agent that decreases or inhibits TIGIT expression and/or activity, or both, as well as instructions for use thereof.

Vector compositions comprising a myeloproliferative sarcoma virus enhancer, negative control region deleted, dl587rev primer-binding site substituted (MND) promoter operably linked to a chimeric antigen receptor (CAR) are provided.

The invention provides compositions and methods for treating diseases associated with expression of a cancer associated antigen as described herein. The invention also relates to chimeric antigen receptor (CAR) specific to a cancer associated antigen as described herein, vectors encoding the same, and recombinant T cells comprising the CARs of the present invention. The invention also includes methods of administering a genetically modified T cell expressing a CAR that comprises an antigen binding domain that binds to a cancer associated antigen as described herein.

The present disclosure provides methods for the treatment of inflammatory bowel disease (IBD) or an eosinophilic gastrointestinal disorder (EGID), such as eosinophilic esophagitis (EOE), eosinophilic gastritis (EG), eosinophilic gastroenteritis (EGE), and eosinophilic colitis (EC). In particular, the present disclosure provides methods for the treatment of IBD or an EGID through administration of antibodies that bind to human Siglec-8 or compositions comprising said antibodies. The present disclosure also provides articles of manufacture or kits comprising antibodies that bind to human Siglec-8 for the treatment of IBD or an EGID.

Conjugates of an isolated humanized, anti-CD22 antibody with PBD dimers.