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Abstract
Importance of the field: Despite considerable advances, B-cell chronic lymphocytic leukemia (CLL) is incurable with standard approaches. Thus, there remains a need for new therapies, particularly for patients who develop chemoresistance to DNA-targeting treatments. AICA-riboside (acadesine) is a nucleoside with a wide range of metabolic effects, including release of adenosine and activation of AMP-activated protein kinase (AMPK), which was initially developed as a cardioprotective agent. More recently, it has been shown that AICA-riboside induces apoptosis in various models of leukemia, including CLL.
Areas covered in this review: The literature data show that apoptosis induced by AICA-riboside in CLL is not dependent on a functionally normal p53 pathway. Moreover, AICA-riboside is active towards resting and proliferative models of leukemia cells, including resistant phenotypes. Finally, studies in healthy subjects and during coronary artery bypass graft surgery show that AICA-riboside is devoid of serious toxicity.
What the reader will gain: This paper reviews the mechanisms of action of AICA-riboside in normal and malignant cells and discusses how AICA-riboside could impact CLL treatment.
Take home message: We propose that AICA-riboside, which displays a relative selectivity and a favorable toxicity profile, may offer a new treatment option for CLL.