Disclosed are means, methods and compositions of matter useful for prevention and/or reversion of type 1 diabetes by upregulation of myeloid suppressor cell activity in a mammal suffering from and/or at risk of developing type 1 diabetes. In one embodiment the invention teaches administration of immune cells that have been conditioned by exposure to regenerative cells, and/or cultured in the presence of factors produced from regenerative cells. In one embodiment said regenerative cells are umbilical cord derived mesenchymal stem cells. In one embodiment, immune cells that have been exposed to said regenerative cells are administered together with agents known to enhance myeloid suppressor cell activity. In another embodiment immune cells are administered together with exogenous myeloid suppressor cells.

Provided herein are methods and compositions for dynamically controlling and targeting multiple immunosuppressive mechanisms in cancer. Some aspects provide cells engineered to produce multiple effector molecules, each of which modulates a different immunosuppressive mechanisms of a tumor, as well as methods of using the cells to treat cancer, such as ovarian, breast, or colon cancer.

The present disclosure provides compositions and methods for making and using engineered phagocytic cells that express a chimeric antigen receptor having an enhanced phagocytic activity for immunotherapy in cancer or infection.

Embodiments of the disclosure concern methods and compositions for immunotherapy for human papillomavirus infection and diseases associated therewith. In specific embodiments, methods concern production of immune cells that target one or more antigens of HPV16 and/or HPV18, including methods with stimulation steps that employ IL-7 and IL-15, but not IL-6 and/or IL-12. Other specific embodiments utilize stimulations in the presence of certain cells, such as costimulatory cells and certain antigen presenting cells.

Provided herein are carrier cells and virus combinations and methods for treatment of cancers. Also provided are modified carrier cells for such treatment, and methods of selecting carrier cells that are matched to subjects for such treatment.

One aspect of the present disclosure can include a priming medium for creating an isolated population of stem cells having an anti-inflammatory phenotype from an unprimed population of stem cells. The priming media can include a serum-free medium, a functional activator of a Type I interferon (IFN) pathway and a Type II IFN pathway, and at least two pro-inflammatory cytokines. The functional activator and the at least two pro-inflammatory cytokines can be present in an amount sufficient to promote induction of stem cells having an anti-inflammatory phenotype. The cells having an anti-inflammatory phenotype can be marked by increased expression and/or secretion of one or more anti-inflammatory or immune modulatory mediators as compared to the unprimed population of stem cells. Other aspects of the present disclosure can include stem cells made according to the present disclosure as well as therapeutic compositions and uses of the stem cells.

Described herein are compositions and methods for treating a disease, particularly a cancer, with an immune checkpoint modulatory agent and a strain of an Arbovirus or a strain of an Alphavirus. Also provided herein are also methods for combination therapy comprising administration of an immune checkpoint modulatory agent, tumor antigen primed dendritic cells and an Alphavirus or an Arbovirus.

A decidual placental mesenchymal stem cell and its culturing method are provided, which includes adding an induction step to the conventional mesenchymal stem cell culture method to make the said decidual placental mesenchymal stem cell highly express the decoy receptor 3; DcR3. A use of decidual placental mesenchymal stem cells for preparing pharmaceutical compositions for promoting angiogenesis.

The disclosure provides methods and compositions for affecting the development of antigen presenting cell (APC, e.g., a macrophage or dendritic cell). The methods include maturing an APC, promoting anti-inflammatory phenotype, promoting development of a T regulatory cell (Treg) from a naive T cell. The methods generally include exposing an APC to a tryptophan derived microbiota metabolite (TDMM), such as an anti-inflammatory or pro-mucosal TDMM, and permitting the APC to mature. In some embodiments, the conditioned APC is exposed to a naive T cell to further promote development of a T regulatory cell (Treg). In some embodiments, the TDMM is selected from the group consisting of indole, indole-3-acetate, 5-hydroxyindole, and indole-3-pyruvate.

The present disclosure relates to genetically modified B cells, including memory cells, differentiated to plasmablasts or plasma cells useful for long term in vivo expression of a transgene, such as a specific antibody or other protein therapeutic. Also disclosed are methods of producing the cells and methods of treatment.