The present invention relates to genetically modified B cells and their uses thereof, for example, for the treatment of a variety of diseases and disorders, including cancer, heart disease, inflammatory disease, muscle wasting disease, neurological disease, and the like. In certain embodiments, the invention relates to an isolated modified B cell (CAR-B cell), capable of expressing a chimeric receptor (CAR-B receptor), wherein said chimeric receptor comprises (a) an extracellular domain; (b) a transmembrane domain; and (c) a cytoplasmic domain that comprises at least one signaling domain. In various embodiments, the invention comprises an isolated modified B cell, wherein said B cell is capable of expressing and secreting a payload, wherein the payload is not naturally expressed in a B cell or is expressed at higher levels than is naturally expressed in a B cell. In various embodiments, the payload is an antibody or fragment thereof.

The present invention relates to the field of treatment of tumor, and especially to a composition comprising a plasmodium, a treatment method and an application thereof. The composition of the present invention has therapeutic effects on colorectal carcinoma, lung carcinoma, breast carcinoma, gastric carcinoma and hepatic carcinoma etc., can inhibit the growth of tumor and prolong the life of the tumor patients, whereas has no therapeutic effect on melanoma and lymphoma; meanwhile, the present invention describes that the long-term plasmodium infection has better therapeutic effect on tumors, and the plasmodium immunotherapy of the present invention does not take the fever time as a course standard when treating tumors, but should be used to extend the duration of plasmodium infection as much as possible until the progression of tumors can be controlled under the premise of protecting the organ functions and life safety of the patients.

The present invention relates to a polypeptide comprising (a) a first set of six complementarity determining regions (CDRs) configured to bind a first antigen; and (b) (ba) a second set of six CDRs configured to bind a second antigen; or (bb) a ligand capable of binding to a second antigen; wherein (i) said first antigen is selected from Hepatitis B virus (HBV) small surface antigen; HBV medium surface antigen; and HBV large surface antigen; and (ii) said second antigen is selected from surface antigens presented by immune effector cells such as natural killer (NK) cells and cytotoxic T lymphocytes (CTLs). Also provided are compositions for use in a method of treating or preventing HBV infection and/or a condition caused by said HBV infection, said condition caused by said HBV infection being selected from liver cirrhosis and hepatocellular carcinoma.

Described herein are immunoresponsive cells engineered to express cytokines, chimeric receptors, and synthetic transcription factor systems. Also described herein are nucleic acids, cells, and methods directed to the same.

Disclosed herein are methods of treating a subject exhibiting a solid tumor that expresses Glypican-3 (GPC3). The methods typically utilize g GPC3 chimeric antigen receptor immunoresponsive cells to a subject in need thereof to effect killing of tumor cells.

Single-domain shark variable new antigen receptor (V.sub.NAR) monoclonal antibodies that specifically bind programmed death-ligand 1 (PD-L1) are described. The PD-L1-specific V.sub.NAR antibodies are capable of binding PD-L1-expressing tumor cells from human, mouse and canine origin. Immune cells expressing chimeric antigen receptors (CARs) developed using the V.sub.NAR antibodies can be used to kill PD-L1-positive tumor cells, for example in animal models of liver cancer and breast cancer.

The present disclosure relates to a novel anti-HER2 antibody or an antigen-binding fragment thereof used in the prevention or treatment of cancer, a chimeric antigen receptor including the same, and uses thereof. The antibody of the present disclosure is an antibody that specifically binds to HER2 which is highly expressed in cancer cells (particularly, breast cancer or gastric cancer cells), and binds to an epitope that is different from an epitope to which trastuzumab binds.

T cell receptors that specifically recognize hAFP.sub.158 and methods of their use are provided.

An industrial preparation of natural killer cells (NKs) is produced by: using umbilical cord blood and peripheral blood from legitimate sources as raw materials, obtaining stem cells by a method for extracting and separating karyocytes, or using FICOLL? or PERCOLL? density gradient media centrifugation to isolate and screen out karyocytes; diluting the above-mentioned karyocytes with cell culture medium, adding interferon, interleukin, CD3 antibody, and human albumin, loading them together into a bioreactor for perfusion culture, and then performing multiplication culture; the passage number of natural killer cells from multiplication culture is no less than 8, and the culture time is no less than 4 weeks; the markers of the natural killer cells obtained after the multiplication culture are CD3.sup.?\CD56.sup.+, CD16.sup.+, CD57.sup.+, and CD8.sup.+, wherein CD16.sup.+/CD56.sup.+?15%, CD3.sup.?/CD56.sup.+?50%, and CD8.sup.+/CD57.sup.+?8%; then preparing an injection with a certain concentration using the cell suspension obtained by above-mentioned method.

The present invention pertains to immunology, biomedicine field, specifically relates to a method for prevention or treatment of one or more of diseases relevant to the protein in the protein-cell conjugate, malignant tumors, infectious diseases caused by pathogenic microorganisms and autoimmune diseases. The method includes a step of administering to a subject in such need a prophylactically or therapeutically effective amount of a protein-cell conjugate, the said protein-cell conjugate is a conjugate formed by covalently linking a protein and a cell to a linker, respectively; the cell has free sulfhydryl groups distributed on its surface, when the cell is not linked to the linker; the linker is derived from a bifunctional cross-linking agent, and the bifunctional cross-linking agent comprises both a group capable of reacting with an amino group and a group capable of reacting with a sulfhydryl group.