Chronic lymphocytic leukemia (CLL) results from the accumulation of small mature, slowly dividing, monoclonal B lymphocytes. The clinical course of this disease is heterogeneous, with some patients progressing rapidly with early death whilst others exhibit a more stable, possibly, non-progressing disease lasting many years. Despite progress in therapy, relapse invariably occurs and the disease remains incurable. The clinical management of CLL is therefore challenging and considerable effort has been directed towards novel therapeutic strategies aimed at reducing the disease relapse rate. Recent insights into the role of dendritic cells as the pivotal antigen-presenting cells that initiate immune responses may provide the basis for generating more effective antitumor immune responses. Consequently, dendritic cells constitute an attractive approach in the context of CLL. However, understanding the relation between dendritic cells and the cellular immune response is crucial to elucidation of how to manipulate immune responses. After summarizing general properties of dendritic cells, this review focus on the approaches exploiting monocyte-derived dendritic cells in CLL, which should help design of novel treatment strategies in this disease.
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