Dendritic cells pulsed with placental gp96 promote tumor-reactive immune responses

Fibroblast and T cells conditioned media induce maturation dendritic cell and promote T helper immune response

Dendritic cells (DCs) induce pathogen-specific T cell responses. We comprehensively studied the effects of addition of maturation stimulus, fibroblasts (fibroblast conditioned medium), PHA activated T cells (T cell conditioned medium), and mixture of fibroblast & PHA activated T cells (FCM-TCCM) conditioned media on maturation of DCs. Monocytes were cultured with GM-CSF and IL-4 for five days. ...

Murine dendritic cells pulsed with whole tumor lysates mediate potent antitumor immune responses in vitro and in vivo.

The highly efficient nature of dendritic cells (DC) as antigen-presenting cells raises the possibility of uncovering in tumor-bearing hosts very low levels of T cell reactivity to poorly immunogenic tumors that are virtually undetectable by other means. Here, we demonstrate the in vitro and in vivo capacities of murine bone marrow-derived, cytokine-driven DC to elicit potent and specific anti-t...

Dendritic cells pulsed with live and dead Legionella pneumophila elicit distinct immune responses.

Legionella pneumophila is the causative pathogen of Legionnaires' disease, which is characterized by severe pneumonia. In regard to the pathophysiology of Legionella infection, the role of inflammatory phagocytes such as macrophages has been well documented, but the involvement of dendritic cells (DCs) has not been clarified. In this study, we have investigated the immune responses that DCs gen...

Tumor-Specific Immune Responses and Present Their Antigens to Elicit Dendritic Cells Capture Killed Tumor Cells

Human plasmacytoid dendritic cells interact with gp96 via CD91 and regulate inflammatory responses.

Glucose-regulated stress protein gp96 is known to be involved in the host response to pathogens and to cancer. Our study explored the relationships between gp96 and human blood plasmacytoid dendritic cells (pDC) and proved that gp96 directly targets pDC by a receptor-dependent interaction. Competition studies identified CD91 as a gp96 receptor on pDC, and laser confocal imaging indicated that C...