Cancer Stem Cells: Powerful Targets to Improve Current Anticancer Therapeutics

Area of Science:

• Oncology
• Cancer Biology
• Therapeutics

Background:

• Tumor resistance and relapse are frequent in malignancies, often stemming from tumor heterogeneity.
• Cancer stem cells (CSCs) are key drivers of this heterogeneity, possessing self-renewal and plasticity.
• CSCs contribute to therapeutic resistance through mechanisms like quiescence, ABC transporters, apoptosis evasion, and metabolic reprogramming.

Purpose of the Study:

• To review the characteristics and therapeutic implications of targeting cancer stem cells (CSCs).
• To explore the potential of combination therapies in overcoming CSC-mediated tumor resistance.
• To discuss future perspectives for improving anticancer therapeutics by targeting CSCs.

Main Methods:

• Literature review of in vitro and in vivo studies on CSCs and therapeutic resistance.
• Analysis of CSC resistance mechanisms including quiescence, transporters, apoptosis, epigenetics, and metabolism.
• Examination of emerging combination therapy strategies targeting CSCs.

Main Results:

• CSCs are identified as a critical reservoir for tumor recurrence and metastasis.
• Multiple CSC resistance mechanisms contribute to treatment failure.
• Emerging evidence supports combination therapies targeting CSCs as a promising strategy.

Conclusions:

• Targeting CSCs is crucial for overcoming therapeutic resistance in cancer.
• Combination therapies hold significant potential for enhancing treatment efficacy against CSCs.
• Further clinical trials are needed to establish the safety and efficacy of CSC-targeting combination treatments.