Recent advances in understanding chronic myeloid leukemia: where do we stand?

Area of Science:

• Hematology
• Oncology
• Molecular Biology

Background:

• Leukemic stem cells (LSCs) are critical for chronic myeloid leukemia (CML) persistence and relapse.
• Understanding LSC biology, including signaling pathways and microenvironment influences, is essential for effective CML treatment.

Purpose of the Study:

• To explore the mechanisms behind LSC persistence in CML.
• To identify LSC vulnerabilities for novel therapeutic strategies.
• To investigate factors influencing treatment-free remission (TFR) in CML patients.

Main Methods:

• Immunophenotypic analysis of LSCs.
• Investigation of signaling pathways (autophagy, metabolism, epigenetics).
• Assessment of immune and bone marrow microenvironmental factors.

Main Results:

• LSC persistence is linked to abnormalities in key signaling pathways.
• Extrinsic factors like the immune and bone marrow microenvironments significantly impact LSC behavior.
• These factors modulate therapeutic response and resistance, influencing TFR achievement.

Conclusions:

• Targeting LSC vulnerabilities and microenvironment interactions is crucial for achieving durable treatment-free remission in CML.
• Further research is needed to understand LSC persistence and progression to blast crisis.