New Strategies in the Chemotherapy of Leukemia: Eradicating Cancer Stem Cells in Chronic Myeloid Leukemia

作者：Stefanachi A^*; Leonetti F; Nicolotti O; Catto M; Pisani L; Cellamare S; Altomare C; Carotti A

来源：Current Cancer Drug Targets, 2012, 12(5): 571-596.

DOI：10.2174/156800912800673239

• BCR-ABL
• chronic myeloid leukemia
• leukemic stem cells
• tyrosine kinase inhibitors

Chronic myeloid leukemia (CML) is a myeloproliferative disorder caused by the Philadelphia-positive chromosome deriving from a translocation between chromosomes 22 and 9. The oncogenic product of this aberrant chromosome is the constitutively active tyrosine kinase BCR-ABL that is responsible for leukemic cell growth, proliferation and survival driven by the dysregulation of a large array of signal transduction pathways. Inhibition of BCR-ABL with tyrosine kinase inhibitors proved to be an efficient therapy of CML in the chronic phase. Unfortunately, the impressive success of BCR-ABL inhibitors as front-line therapy in CML has been tempered by problems of disease persistence or relapse arising from different mechanisms, including mutations in the kinase domain of the enzyme BCR-ABL and mechanisms independent from BCR-ABL activity. Growing evidence has also suggested a pivotal role of persistent leukemic cancer stem cells, characterized by high self-renewal and pluripotency, in CML maintenance and/or relapse. The present review deals with the most recent advances in this challenging field and focuses on the development of new drugs and therapeutic approaches to eradicate the subtle and dangerous leukemic stem cells responsible for maintaining and sustaining tumor growth.

• 出版日期2012-6