Hot or cold: Bioengineering immune contextures into in vitro patient-derived tumor models

Area of Science:

• Oncology
• Immunology
• Biotechnology

Background:

• Immune checkpoint inhibitors (ICI) have revolutionized cancer treatment for some patients.
• Predicting individual patient response to ICI therapy and understanding resistance mechanisms are critical unmet needs.
• Existing patient tumor models often fail to accurately represent the tumor immune microenvironment, limiting research.

Purpose of the Study:

• To review key parameters influencing tumor immune contexture.
• To explore how engineering strategies can recreate immune-competent in vitro models.
• To advance the development of next-generation patient-derived tumor models.

Main Methods:

• Literature review of factors affecting tumor immune contexture.
• Analysis of current in vitro model limitations.
• Discussion of engineering approaches for model development.

Main Results:

• Identified critical immune parameters that define distinct tumor immune contextures.
• Highlighted the inadequacy of current models in recapitulating the tumor immune microenvironment.
• Proposed engineering strategies to build more physiologically relevant in vitro models.

Conclusions:

• Understanding tumor immune contexture is crucial for improving ICI efficacy.
• Developing advanced in vitro models is essential for studying ICI resistance.
• Engineering patient-derived models offers a promising path forward for personalized cancer therapy research.