unpulsed dendritic cells

Unpulsed dendritic cells (DCs) refer to dendritic cells that have not been exposed ("pulsed") to exogenous antigens or tumor lysates prior to administration. Dendritic cells are professional antigen-presenting immune cells capable of initiating and modulating adaptive immune responses by presenting antigens to T lymphocytes[4][5]. In their "unpulsed" or immature state, these DCs are highly efficient at capturing antigens but express low levels of co-stimulatory molecules and immunostimulatory cytokines[5]. Unpulsed DCs can induce immune tolerance by presenting self-antigens without activating signals, leading to T cell anergy or the development of regulatory T cells[5]. In experimental cancer immunotherapy settings, unpulsed DCs serve as a control group compared with antigen-pulsed (e.g., tumor lysate-loaded) DC vaccines; they may have limited direct anti-tumor activity but can still influence the immune environment[2][6].

Other names

unpulsed dendritic cellsimmature dendritic cellsDCs (unpulsed)