Background: Dendritic cells (DCs) are the most potent stimulators of primary T cell responses and play a key role in immune reactions after stem cell transplantation. Very little is known about the cord blood (CB) dendritic cells and their potential involvement in the low incidence and lower severity of acute graft-versus-host disease after CB transplantation.   Objectives: The aim of this stud...

objective: dendritic cells have a critical role in control and regulation of immune responses. it is believed that these cells can be used for the treatment of many diseases. one of the methods used in immunotherapy is based on generating of tolerogenic dendritic cells through inhibition of expression costimulatory molecules. cd40 is one of the costimulatory molecules, and inhibition of express...

Dendritic cells (DCs) are considered critical for the induction of graft-versus-host disease (GVHD) after bone marrow transplantation (BMT). In addition to their priming function, dendritic cells have been shown to induce organ-tropism through induction of specific homing molecules on T cells. Using adoptive transfer of CFSE-labeled cells, we first demonstrated that alloreactive T cells differe...

background: the expanse of dendritic cells (dc) differentiation plays an important role in determining immune response. dc-based immunosuppressive drugs have notable side effects in increasing the risk of infectious diseases and cancers. g2013, as a novel anti-inflammatory and immunosuppressive agent, has been tested in experimental model of multiple sclerosis. the aim of this study was to cond...

the wharton’s jelly of the umbilical cord is believed to be a source of mesenchymal stem cells (mscs) which can be therapeutically applied in degenerative diseases. in this study, we investigated the immunomodulatory effect of umbilical cord derived- mesenchymal stem  cells (uc-mscs) and  bone  marrow-derived-mesenchymal stem  cells (bm-mscs) on differentiation, maturation, and endocytosis of m...

background: during the resent years there has been interest in using bone marrow stem cells to treat liver cirrhosis. however, there is a potential concern for malignant transformation after stem cell therapy. the aim of this study was to evaluate the development of hepatocellular carcinoma (hcc) after autologous bone marrow stem cell transplantation for liver cirrhosis. methods: all the patien...

The liver is the only organ that can regenerate and regain its original tissue-to-body weight ratio within a short period of time after tissue loss. Insufficient regeneration in patients partial hepatectomy or transplantation with grafts often leads to post-hepatectomy failure small-for-size syndrome, respectively. Enhancing injury might improve outcomes increase patient survival. Liver compris...

variety of positive as well as negative regulatory signals are provided by antigen presenting cell in particular by dendritic cells. in this research, we studied the capacity of dendritic cells to expand antigen-specific t regulatory cells.we also investigated the role of tgf-beta in induction inhibitory functions of dendritic cells in mixed leukocyte reactions. dendritic cells were generated f...

Currently, liver transplantation is the most effective treatment for end-stage disease. Immuno-suppressive agents are required to be taken after operations, which have significantly reduced rejection rates and improved short-term (<1 year) survival rates. However, post-transplant complications related immuno-suppressive therapy led development of new protocols aimed at protecting renal funct...