Therapy resistance mediated by cancer stem cells

Area of Science:

• Oncology
• Cancer Biology
• Stem Cell Research

Background:

• Cancer stem cells (CSCs) are a subpopulation of cells within tumors responsible for malignant growth and intratumoral heterogeneity.
• CSCs exhibit stem cell-like properties, including self-renewal and differentiation, contributing to tumor hierarchy.
• Eradicating CSCs is essential for preventing tumor regrowth and recurrence after therapy.

Purpose of the Study:

• To review the role of cancer stem cells (CSCs) in chemo- and radiotherapy resistance.
• To highlight mechanisms by which CSCs mediate therapy resistance.
• To discuss potential strategies for overcoming CSC-mediated therapy resistance.

Main Methods:

• This review synthesizes existing research on cancer stem cells and therapy resistance.
• Literature search and analysis of studies investigating CSC properties and resistance mechanisms.
• Examination of therapeutic approaches targeting CSCs.

Main Results:

• CSCs contribute significantly to resistance against chemotherapy and radiotherapy.
• Therapy resistance in CSCs is mediated by factors including dormancy, enhanced DNA repair, drug efflux, reduced apoptosis, and the CSC niche.
• The CSC niche plays a critical role in supporting CSC survival and therapy resistance.

Conclusions:

• Targeting cancer stem cells is a promising strategy for improving cancer treatment outcomes.
• Understanding the mechanisms of CSC-mediated therapy resistance is key to developing effective therapeutic interventions.
• Future research should focus on novel approaches to eradicate CSCs and overcome their resistance to conventional therapies.