Engineered culture models for studies of tumor-microenvironment interactions

Area of Science:

• Oncology
• Biomedical Engineering
• Cancer Research

Background:

• Cancer progression and therapy resistance are significantly influenced by the heterogeneous tumor microenvironment.
• Traditional cell cultures fail to replicate the complexity of the tumor microenvironment, leading to poor translation of therapeutic findings.
• Key microenvironmental factors include tissue dimensionality, cell-extracellular matrix interactions, signaling gradients, and biomechanical cues.

Purpose of the Study:

• To review the critical physicochemical and biological features of the tumor microenvironment.
• To critically evaluate the advantages and limitations of current engineering strategies for modeling the tumor microenvironment.
• To provide a future perspective on opportunities for advanced engineered tumor models.

Main Methods:

• Review of existing literature on tumor microenvironment characteristics.
• Analysis of physical sciences-based strategies for modeling cancer microenvironments.
• Discussion of the limitations of current in vitro and engineered models.

Main Results:

• The tumor microenvironment is characterized by complex gradients and interactions that are not adequately replicated by standard cell cultures.
• Engineering strategies offer improved mimicry of specific microenvironmental aspects but still face limitations.
• Current models provide partial insights into cancer pathogenesis and therapy resistance.

Conclusions:

• Advanced engineered tumor models are crucial for overcoming the limitations of traditional cell cultures.
• Improved models are needed to accurately predict therapeutic efficacy and guide clinical translation.
• Future research should focus on developing more comprehensive and physiologically relevant engineered tumor models.