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Integrated cancer tissue engineering models for precision medicine.

Michael E Bregenzer1, Eric N Horst1, Pooja Mehta2

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Tumors are complex organ systems, not just proliferating cells. Developing better physiologic models of the tumor microenvironment is crucial for understanding cancer progression and accelerating new treatments.

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Area of Science:

  • Biomedical Engineering
  • Cancer Biology
  • Translational Oncology

Background:

  • Tumors are complex, organized systems within intricate microenvironments.
  • Physical and chemical stimuli in the tumor microenvironment influence cancer cell behavior and progression.
  • Current in vitro models often fail to fully replicate the complexity of the tumor microenvironment.

Purpose of the Study:

  • To review current in vitro models of the tumor microenvironment and their role in cancer progression.
  • To identify limitations and sources of experimental variation in existing models.
  • To recommend strategies for improving the physiologic relevance, reproducibility, and rigor of tumor models.

Main Methods:

  • Review of existing literature on in vitro tumor models.
  • Analysis of key aspects of tumor microenvironments and their impact on cancer.
  • Discussion of methods to enhance model characterization and experimental design.

Main Results:

  • Current models offer insights but have limitations in replicating physiological conditions.
  • Improvements are needed in mathematical modeling, standardized characterization, and transparent reporting.
  • Physiological metrics and robust model design are essential for accurate study.

Conclusions:

  • Enhanced in vitro tumor models are vital for advancing biological understanding and accelerating cancer treatment discovery.
  • Improved models will facilitate the study of tumor progression from primary cells to metastatic disease.
  • These advancements promise to improve clinical outcomes by enabling more relevant and translatable research.