Tissue mechanics in tumor heterogeneity and aggression

Area of Science:

• Oncology
• Biomedical Engineering
• Cancer Biology

Background:

• Tumorigenesis occurs in a complex microenvironment involving cancer-associated fibroblasts and myeloid cells.
• These cells contribute to a stiffened extracellular matrix, leading to a hostile tumor microenvironment.
• This microenvironment promotes malignant transformation, metastasis, and treatment resistance.

Purpose of the Study:

• To elucidate the role of tissue mechanics in regulating tumor phenotypes.
• To clarify how the extracellular matrix drives tumor heterogeneity and aggression.
• To identify novel therapeutic targets for improving patient outcomes.

Main Methods:

• Discussion of molecular mechanisms linking tissue mechanics to tumor phenotypes.
• Analysis of the extracellular matrix's impact on tumor heterogeneity and aggression.
• Review of current literature on mechanotransduction in cancer.

Main Results:

• A stiffened extracellular matrix, driven by cancer-associated fibroblasts and myeloid cells, activates cellular mechanotransduction.
• Elevated mechanosignaling and matrix stiffness promote tumor cell growth, survival, invasion, and increase mutational burden.
• These processes contribute to intratumor heterogeneity and compromise antitumor immunity.

Conclusions:

• The extracellular matrix plays a critical role in driving cancer aggression through its influence on tumor heterogeneity.
• Understanding tissue mechanics is crucial for clarifying the basis of tumor heterogeneity and aggression.
• Targeting the extracellular matrix and mechanosignaling pathways may offer novel therapeutic strategies.