Force-dependent breaching of the basement membrane.

Area of Science:

• Oncology
• Biophysics
• Cell Biology

Background:

• Non-invasive carcinomas are confined by the basement membrane, while invasive cancers breach it, enabling metastasis.
• Malignant cell invasion involves protease activity, cell migration, and physical cues like matrix stiffness and tumor cell contractility.
• Tumor cell contractility is influenced by the oncogenic genotype, adding another layer to invasion mechanisms.

Purpose of the Study:

• To review recent findings on molecular mechanisms linking physical cues to tissue fibrosis and malignancy.
• To explore unifying mechanisms across breast, pancreas, and liver epithelial cancers.
• To discuss clinical implications and organ-specific challenges related to these physical factors.

Main Methods:

• Review of recent scientific literature focusing on basement membrane invasion.
• Analysis of molecular mechanisms integrating physical cues (matrix stiffness, cell contractility) with oncogenic signaling.
• Comparative analysis across three distinct epithelial organs: breast, pancreas, and liver.

Main Results:

• Physical cues, including interstitial extracellular matrix stiffness and tumor cell contractility, significantly influence basement membrane invasion.
• Unifying molecular mechanisms demonstrate how these physical factors contribute to tissue fibrosis and malignancy.
• Organ-specific biological properties and clinical challenges are linked to the unique interplay of these factors in breast, pancreas, and liver.

Conclusions:

• Physical microenvironmental cues are critical regulators of cancer invasion and metastasis.
• Understanding these mechanisms offers potential for novel therapeutic strategies targeting tissue fibrosis and tumor contractility.
• Addressing organ-specific complexities is essential for translating these findings into effective clinical interventions.