Clonal tracking in cancer and metastasis

Area of Science:

• Oncology
• Cell Biology
• Genetics

Background:

• Cancer stem cells (CSCs) are rare but critical drivers of tumor heterogeneity, treatment resistance, and relapse.
• Understanding CSC function is essential for developing effective cancer therapies.
• Current challenges in cancer eradication stem from the heterogeneity maintained by CSCs.

Purpose of the Study:

• To review modern clonal tracking strategies for characterizing cancer stem cell activity.
• To highlight the utility of DNA-based cellular barcoding and lineage tracing methods.
• To discuss the clinical and drug discovery implications of these advanced techniques.

Main Methods:

• Viral-based and CRISPR-Cas9-based cellular barcoding techniques.
• Lineage tracing methodologies.
• Imaging-based approaches for tracking cell populations.
• Application of DNA-based barcoding in vitro, in vivo, and patient-derived xenograft models.

Main Results:

• DNA-based cellular barcoding is a robust and powerful strategy for clonal tracking.
• These methods provide critical insights into CSC behavior and tumor evolution.
• Successful application demonstrated across various experimental models.

Conclusions:

• Advanced clonal tracking methods, particularly DNA barcoding, are vital for understanding cancer stem cell biology.
• These techniques hold significant potential for clinical applications and drug discovery.
• Further development and application of these methods can lead to improved cancer treatment strategies.