Abstract
HIV-1 can persist in a latent form in resting memory CD4+ cells and macrophages carrying an integrated copy of the HIV genome. Because of the presence of these stable reservoir cells, eradication by antiretroviral therapy is unlikely and in order to achieve eradication, alternative treatment options are required. Stem cell transplantation has been considered previously to effect the clinical course of HIV-infection but in practice eradication or virus control was not achievable. However, modifications of stem cell transplantation using natural or artificial resistant cell sources, combination with new techniques of gene editing or generating cytotoxic anti HIV effector cells have stimulated this field of HIV cell therapy substantially. Here, we look back on 30 years of stem cell therapy in HIV patients and discuss most recent developments in this direction.
Highlights
The infection with human immunodeficiency virus (HIV) leads to a lifelong infection
Without antiretroviral treatment (ART) a considerable part of infected people die from the acquired immunodeficiency syndrome (AIDS) caused by evolving loss of T-helper cells
With ART the replication of HIV can be effectively suppressed in the peripheral blood and the number of functional T-helper cells returns back to normal or close to normal levels
Summary
Without antiretroviral treatment (ART) a considerable part of infected people die from the acquired immunodeficiency syndrome (AIDS) caused by evolving loss of T-helper cells. Since the early 1980s cell therapy and stem cell transplantation together with associated techniques opened a new insight into HIV pathology and gave us a glimpse of hope to find an effective cure strategy for HIV (Table 1). An introduction into stem cell therapy After the pioneer work of Thomas et al stem cell transplantation (SCT) has become a standard treatment in high risk leukemia and lymphomas and in some nonmalignant diseases like aplastic anemia or thalassemia [3]. Patients donate their own stem cells (after mobilization and apheresis) to get reinfused after high dose chemotherapy to treat their cancer (in the majority nonHodgkin’s lymphoma).
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