Multicellular force coordination constructs microchannel networks for barrier-free metastasis across extracellular...

Area of Science:

• Cancer Biology
• Cellular Mechanics
• Biophysics

Background:

• The extracellular matrix (ECM) is a physical barrier to cancer metastasis.
• Previous research focused on individual cancer cell ECM remodeling.
• The role of multicellular communication in ECM reprogramming for metastasis was unclear.

Purpose of the Study:

• To investigate how cancer cells collaboratively remodel the ECM.
• To uncover the mechanisms behind the formation of metastatic microchannel networks.
• To identify the cellular components and signaling pathways involved in this process.

Main Methods:

• Live-cell imaging to observe dynamic processes.
• Atomic force microscopy and optical tweezers to probe mechanical properties.
• Single-cell sequencing to analyze cellular states.
• Off-lattice agent-based modeling to simulate network formation.

Main Results:

• Cancer cells collaboratively reprogram the ECM to form interconnected microchannel networks.
• Organized cross-convergence of adjacent channels, guided by collagen-based mechanical bridges, is crucial.
• Mechanically responsive leader cells, expressing specific signaling molecules (integrin-RhoA/YAP) and enzymes (matrix metalloproteinase 14), initiate network construction.
• These networks act as

Conclusions:

• Cancer cells create self-organized metastatic networks through coordinated ECM reprogramming.
• Mechanical cues transmitted via collagen bridges direct multicellular force coordination.
• Leader cells play a key role in initiating the formation of these metastatic superhighways.
• This study provides a new framework for understanding metastasis and potential therapeutic targets.