Accordingly. the present disclosure provides a population of genetically engineered mesenchymal stem cells (MSCs), comprising an expression vector comprising an Akt or HGF gene and a PD-L1 gene. Also provided is a method for synergistically increasing survival status and immunomodulatory ability of an MSC or enhancing proliferation of an MSC, comprising transfecting an MSC with an Akt or HGF gene and a PD-L1 gene and a method for preventing, ameliorating and/or treating an ischemia condition, enhancing neuroregeneration or reducing neuronal death, comprising administering an effective amount of a population of genetically engineered MSCs of the present disclosure to a subject in need thereof.

Accordingly. the present disclosure provides a population of genetically engineered mesenchymal stem cells (MSCs), comprising an expression vector comprising an Akt or HGF gene and a PD-L1 gene. Also provided is a method for synergistically increasing survival status and immunomodulatory ability of an MSC or enhancing proliferation of an MSC, comprising transfecting an MSC with an Akt or HGF gene and a PD-L1 gene and a method for preventing, ameliorating and/or treating an ischemia condition, enhancing neuroregeneration or reducing neuronal death, comprising administering an effective amount of a population of genetically engineered MSCs of the present disclosure to a subject in need thereof.

Provided are methods of making and delivering vaccine compositions using an enucleated cell-based platform. Methods of clearing pathogenic infections in a subject using the enucleated cell-based platform is also provided. Such enucleated cell-based platform reduces the vaccine development timeline as compared with conventional biological vaccines, and improves vaccine efficacy.

Provided are cells containing exogenous antigen and uses thereof.

Provided are cells containing exogenous antigen and uses thereof.

As disclosed herein, SIRPα is integral to immuno-evasion by many different cancer types as well as cancer resistance to therapies, and reducing SIRPα levels on can bolster antigen acquisition, processing, and presentation, decrease TME immunosuppression and thereby promote tumor-specific T cell activation to eliminate tumors and generate an adaptive immune response consisting of memory T cells, circulating antibodies, and plasma cells, all of which may be specific for neo-antigens in the original cancer. Therefore, disclosed are activated SIRPα.sup.low macrophages that are useful for treating cancers.

As disclosed herein, SIRPα is integral to immuno-evasion by many different cancer types as well as cancer resistance to therapies, and reducing SIRPα levels on can bolster antigen acquisition, processing, and presentation, decrease TME immunosuppression and thereby promote tumor-specific T cell activation to eliminate tumors and generate an adaptive immune response consisting of memory T cells, circulating antibodies, and plasma cells, all of which may be specific for neo-antigens in the original cancer. Therefore, disclosed are activated SIRPα.sup.low macrophages that are useful for treating cancers.

Disclosed are means of enhancing therapeutic effects of fibroblast administration through utilization of extracorporeal shock waves. In one embodiment, enhancement of intravenously administered fibroblast therapeutic activity is accomplished by introducing extracorporeal shock waves to the patient in need of therapy. In one specific embodiment, enhancement of the ability of fibroblasts administered intravenously to treat a condition is accomplished by exposure of areas areas affected by the condition to extracorporeal shock waves. In another specific embodiment, the invention provides transfection of IL-12 and/or IL-23 into fibroblasts to augment regenerative activity, including neuroregenerative and anticancer activity. In further embodiments the invention provides augmentation of regenerative activity by induction of T regulatory cells utilizing IL-35 transfection, wherein said T regulatory cells provide an optimized environment for stimulation of regenerative activity.

Disclosed are means of enhancing therapeutic effects of fibroblast administration through utilization of extracorporeal shock waves. In one embodiment, enhancement of intravenously administered fibroblast therapeutic activity is accomplished by introducing extracorporeal shock waves to the patient in need of therapy. In one specific embodiment, enhancement of the ability of fibroblasts administered intravenously to treat a condition is accomplished by exposure of areas areas affected by the condition to extracorporeal shock waves. In another specific embodiment, the invention provides transfection of IL-12 and/or IL-23 into fibroblasts to augment regenerative activity, including neuroregenerative and anticancer activity. In further embodiments the invention provides augmentation of regenerative activity by induction of T regulatory cells utilizing IL-35 transfection, wherein said T regulatory cells provide an optimized environment for stimulation of regenerative activity.

The present disclosure relates to a method for producing extracellular vesicles from three-dimensionally cultured stem cells. The method of the present disclosure can produce stem cell-derived extracellular vesicles with a high yield through orbital shaking culture of stem cell aggregates in the presence of TGF-β and thus can be usefully used in an industrial-scale mass production process of exosomes that can be utilized as a pharmaceutical ingredient substituting for a cell therapeutic agent. Furthermore, the exosomes obtained by the method of the present disclosure have significantly improved immunoregulatory functions as compared to the exosomes produced by the existing method and, therefore, can be applied as a superior therapeutic composition for various inflammations or autoimmune diseases.