Extracellular matrix mechanobiology in cancer cell migration

Area of Science:

• Cancer mechanobiology
• Biophysics of extracellular matrix
• Tumor microenvironment engineering

Background:

• The extracellular matrix (ECM) plays a critical role in tumor progression by providing physical support and modulating cell mechanosensation, influencing the metastatic cascade.
• The interdisciplinary field of cancer mechanobiology has rapidly grown due to efforts in understanding the translation between matrix biophysical cues and intracellular signaling.
• Novel in vitro tumor-mimicking platforms are being developed to visualize and quantify mechanical forces within tissues that drive tumor cell invasion and metastasis.

Purpose of the Study:

• To review recent findings on how tumor matrix biophysical cues (e.g., fibrillar arrangement, rigidity, topography) impact tumor cell behavior and malignancy.
• To emphasize how alterations in ECM cues affect cellular mechanotransduction mechanisms, thereby enhancing cancer.
• To elucidate engineering techniques for emulating tumor mechanical properties to aid in developing and testing ECM-targeted therapeutics.

Main Methods:

• Review of recent literature on extracellular matrix biophysical cues and their effects on tumor cell behavior.
• Analysis of how perturbations in matrix properties influence cellular mechanotransduction pathways.
• Elucidation of engineering techniques for creating biomimetic tumor platforms with controlled mechanical properties.

Main Results:

• Tumor matrix biophysical cues such as fibrillar arrangement, crosslinking density, confinement, rigidity, topography, and non-linear mechanics significantly influence tumor cell behavior.
• Perturbations in these ECM cues alter cellular mechanotransduction, leading to enhanced malignancy.
• Engineering approaches can individually emulate tumor mechanical properties for developing novel bioengineered tumor platforms.

Conclusions:

• Disrupted ECM mechanics are a major driver of cancer progression and malignancy.
• Understanding ECM changes in tumorigenesis is crucial for developing targeted therapies that address both cytotoxic effects and matrix-driven invasiveness.
• Optimized tumor mimics with controlled structural features can improve the prediction of biophysical cue-modulated cell behaviors and advance engineered tumor tissue models.