Cancer Stem Cells are Actually Stem Cells with Disordered Differentiation: the Monophyletic Origin of Cancer

Area of Science:

• Oncology
• Stem Cell Biology
• Cancer Research

Background:

• Cancer stem cells (CSCs) are pivotal in tumor initiation, progression, and recurrence.
• Understanding the origin and behavior of CSCs is essential for effective cancer therapy.
• Existing models do not fully explain the evolutionary trajectory of CSCs.

Purpose of the Study:

• To propose a novel monophyletic model for cancer development based on CSCs.
• To elucidate the role of inflammatory responses and damage repair signals in CSC formation.
• To provide a unified framework for understanding CSC evolution and biological hallmarks.

Main Methods:

• Conceptual model development based on current CSC research.
• Integration of knowledge on stem cell activation, differentiation, and mutation accumulation.
• Analysis of the proposed model's implications for cancer origins and therapeutic strategies.

Main Results:

• CSCs are proposed as stem cells with disordered differentiation, originating from tissue repair mechanisms.
• Inflammatory responses and damage signals are identified as key drivers for CSC creation and maintenance.
• The model outlines a two-stage process: initial heteromorphism and metaplasia, followed by poor differentiation and cancer development.

Conclusions:

• The monophyletic model offers a concise understanding of cancer's origin, driven by CSCs.
• This model highlights the evolutionary path and biological characteristics of CSCs.
• The proposed framework may inspire novel therapeutic approaches targeting CSCs.