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A NAMs-Based Microphysiological System for Metastasis and Mechanobiology Studies.

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A novel lung cancer metastasis-on-a-chip platform successfully models tumor-bone interactions and epithelial-mesenchymal transition (EMT) in vitro. This advanced model shows lung cancer cells metastasizing to bone, offering a more ethical and translatable alternative to traditional methods.

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Area of Science:

  • Oncology
  • Biotechnology
  • Translational Medicine

Background:

  • Lung cancer is a leading cause of cancer death, frequently metastasizing to bone.
  • The tumor microenvironment, including the extracellular matrix and epithelial-mesenchymal transition (EMT), is critical in lung cancer progression and metastasis.
  • Existing 2D and animal models inadequately replicate complex tumor-bone interactions.

Purpose of the Study:

  • To develop and validate a physiologically relevant in vitro "lung cancer metastasis-on-a-chip" platform.
  • To model lung cancer cell metastasis to the bone microenvironment.
  • To study epithelial-mesenchymal transition (EMT) dynamics in lung cancer metastasis.

Main Methods:

  • A dual-chamber microfluidic device simulating lung and bone compartments.
  • Integration of lung cancer cells and human osteoblasts within the chip.
  • Utilized time-lapse microscopy, ELISA, and qRT-PCR to analyze cellular dynamics, protein secretion, and gene expression.

Main Results:

  • The platform successfully demonstrated lung cancer cell metastasis to the bone compartment.
  • Observed disruption of the bone microenvironment and increased mesenchymal markers.
  • Detected upregulation of epithelial proliferation markers in the lung compartment, indicating simultaneous primary tumor dissemination and secondary site colonization.

Conclusions:

  • The metastasis-on-a-chip platform accurately mimics in vivo lung cancer metastasis to bone.
  • This model provides a valuable tool for studying tumor-bone interactions and EMT.
  • The platform supports exposome research in oncology, advancing precision medicine and reducing animal testing.