Provided is a method for preparing and using cell ghosts with active factors as a synergist of a lymphocyte in vitro culture. The method for preparing cell ghosts comprises: washing a cell to obtain a washed cell; and cleaving the washed cell to obtain cell ghosts, wherein the cell has cytokines capable of promoting the proliferation and differentiation of lymphocytes on their surface.

The invention features a complex that binds to, stimulates, and expands a desired T cell population and facilitates separation of the target population from a sample. The complex can be gently dissociated from the binding unit after separating the desired T cell population, representing a safe and efficient approach for processing T cells for clinical use. Invention also provides methods of using such complexes as part of adoptive T cell therapy systems.

The invention provides a method for enhancing immune cell function by activating various immune cells ex vivo and provides immune cells with enhanced function. The invention further provides an immune-related cell multifunctionality evaluation method. A biguanide antidiabetic drug selected from metformin, phenformin, and buformin is capable of enhancing immune cell multifunctionality by increasing CD8+T cells having a high ability to produce IL-2, INF, and IFN. The immune-related cell multifunctionality may be evaluated by comparing immune cells treated with a biguanide antidiabetic drug selected from metformin, phenformin, and buformin, with control immune cells untreated with the biguanide antidiabetic drug. When the multifunctionality of immune cells treated with the biguanide antidiabetic drug selected from metformin, phenformin, and buformin is determined to be significantly increased compared with the control, it can be evaluated that the sensitivity of the immune cells to the therapeutic agent is improved.

A method of producing a population of CD8+ Tc9 lymphocytes is provided including priming a population of nave CD8+ T cells by contacting the population of nave CD8+ T cells with an immunogenic peptide, in the presence of a Tc9 supportive environment, thereby producing a population of CD8+ Tc9 lymphocytes which secrete IL-9. Purified populations of CD8+Tc9 cells are also disclosed herein, as are method for their use in the treatment of cancer in a subject.

In some aspects, the invention relates to compositions comprising marrow infiltrating lymphocytes (MILs). The MILs may be activated MILs. In some aspects, the invention relates to methods for activating MILs, comprising incubating MILs in an environment comprising less than 21% oxygen. In some aspects, the invention relates to methods for treating cancer in a subject, comprising administering to the subject a composition comprising activated MILs.

In some aspects, the invention relates to compositions comprising marrow infiltrating lymphocytes (MILs). The MILs may be activated MILs. In some aspects, the invention relates to methods for activating MILs, comprising incubating MILs in an environment comprising less than 21% oxygen. In some aspects, the invention relates to methods for treating cancer in a subject, comprising administering to the subject a composition comprising activated MILs.

Disclosed are yeast-based immunotherapeutic compositions comprising Brachyury antigens, and methods for the prevention and/or treatment of cancers characterized by the expression or overexpression of Brachyury.

Carbon nanotube (CNT)-based compositions for activating cellular immune responses are provided. The CNTs function as high surface area scaffolds for the attachment of T cell ligands and/or antigens. The CNT compositions function as artificial antigen-presenting cells (aAPCs) or as modular vaccines. The disclosed CNT aAPCs are efficient at activating T cells and may be used to activate T cells ex vivo or in vivo for adoptive or active immunotherapy.

The present disclosure relates to a soluble CD52 glycoprotein and its use in treating diseases regulated by effector T-cells, for example autoimmune diseases such as type 1 diabetes. The present disclosure also relates to fusion proteins comprising the soluble glycoprotein, to cells expressing high levels of CD52, and to diagnostic methods based on the detection of CD52 expression levels in a subject.

Described herein are compositions and methods for treating cancer through the combination of tumor antigen-pulsed dendritic cells and Dengue Virus. The combination of the two forms of therapeutic intervention provides enhanced tumor cell reduction compared to either alone. The cancer targeted by compositions and methods described herein may be a solid cancer or blood cancer.