Multidimensional Coculture System to Model Lung Squamous Carcinoma Progression

Area of Science:

• Oncology
• Cell Biology
• Biotechnology

Background:

• Tumor-stroma interactions are crucial in lung squamous cell carcinoma (LUSC) development.
• Understanding these interactions in LUSC tumorigenesis is limited by a lack of suitable experimental models.
• Tissue architectural changes during LUSC progression are complex and difficult to study in vivo.

Purpose of the Study:

• To develop and present a novel 3D coculture organoid model for studying LUSC.
• To recapitulate key features of LUSC tissue architecture and tumor microenvironment (TME) dynamics.
• To provide a versatile platform for investigating LUSC progression and identifying therapeutic targets.

Main Methods:

• Generation of a 3D coculture model using TUM622, a LUSC patient-derived xenograft primary cell culture.
• Seeding TUM622 cells in a basement membrane matrix to form acinar-like structures.
• Coculturing LUSC cells with tumor microenvironment components like extracellular matrix (ECM) and cancer-associated fibroblasts (CAFs).

Main Results:

• The 3D coculture model successfully recapitulates LUSC tissue architecture during progression.
• Dynamic interactions between LUSC cells and TME components (ECM, CAFs) are observed.
• The model demonstrates adaptability for various downstream analyses, including mechanistic studies.

Conclusions:

• This organoid model provides a biologically relevant platform for studying LUSC.
• It enables insights into cell-intrinsic and extrinsic mechanisms driving epithelial disruption in carcinoma.
• The model can aid in the discovery of novel therapeutic targets and diagnostic markers for LUSC.