Tackling the cancer stem cells - what challenges do they pose?

Area of Science:

• Oncology
• Cell Biology
• Cancer Research

Background:

• Cancer stem cells (CSCs) are crucial for tumor initiation, growth, and therapeutic resistance.
• The epithelial-to-mesenchymal transition (EMT) program is implicated in CSC formation and presents a therapeutic target.

Purpose of the Study:

• To review recent advancements in cancer stem cell research, particularly in carcinomas undergoing EMT.
• To explore signaling pathways, intrinsic mechanisms, and the tumor microenvironment's role in CSC biology.

Main Methods:

• Literature review focusing on CSCs and EMT in carcinomas.
• Analysis of signaling pathways and cellular mechanisms involved in CSC generation and maintenance.
• Discussion of the tumor microenvironment's influence on CSCs.

Main Results:

• EMT activation generates cells with stem-like properties, contributing to CSC populations.
• Specific signaling pathways and cell-intrinsic mechanisms are identified as key drivers of CSC formation and maintenance.
• The tumor microenvironment plays a significant role in sustaining CSCs.

Conclusions:

• Targeting EMT and CSC-specific pathways offers potential therapeutic strategies.
• Developing novel therapies requires a comprehensive understanding of CSC biology, including their interaction with the microenvironment.
• Exploiting CSC differentiation or elimination mechanisms could overcome therapeutic resistance.