Hallmarks of cancer stemness

Area of Science:

• Oncology
• Cell Biology
• Cancer Research

Background:

• Cancer stemness is crucial for tumor development.
• Cancer stem cells (CSCs) were previously thought to be a rare, hierarchically organized population.
• Emerging evidence indicates CSCs possess a plastic cellular state influenced by CSC-niche interactions.

Purpose of the Study:

• To reevaluate the defining and emerging hallmarks of cancer stemness.
• To summarize techniques for identifying and characterizing CSC states.
• To discuss CSC-niche interplay and future research directions.

Main Methods:

• Review of existing literature on cancer stem cell identification and characterization.
• Analysis of techniques used to study CSC states.
• Discussion of CSC hallmarks, enabling features, and associated factors.

Main Results:

• Cancer stemness is characterized by cellular plasticity rather than a rigid hierarchy.
• Dynamic interplay between CSCs and their niche significantly influences stemness.
• Identification and characterization techniques are evolving to capture this plasticity.

Conclusions:

• The concept of cancer stemness requires reevaluation to incorporate cellular plasticity.
• Understanding CSC-niche interactions is key to targeting cancer stemness.
• Future research should focus on the dynamic nature of CSCs and their microenvironment.