3D cultures for modeling nanomaterial-based photothermal therapy

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Cancer Research

Background:

• Photothermal therapy (PTT) is a promising cancer ablation technique utilizing nanoparticles.
• Nanoparticles act as theranostic agents, generating heat under laser irradiation for PTT.
• Current preclinical PTT studies often use 2D cultures, which fail to replicate in vivo tumor complexity.

Purpose of the Study:

• To review advancements in 3D culture systems for modeling cancer microenvironments.
• To highlight the application of these 3D models in evaluating nanoparticle-directed PTT.
• To address the limitations of 2D cultures in predicting nanomaterial behavior in vivo.

Main Methods:

• Review of existing literature on 3D cancer models and their use in PTT research.
• Analysis of how 3D models capture spatiotemporal oxygen gradients and cell adaptations.
• Focus on functionalized nanoparticles for PTT within 3D microenvironments.

Main Results:

• 3D models provide more accurate representations of tumor physiology and microenvironment.
• These models enable better assessment of nanomaterial penetration, biodistribution, and diffusion.
• 3D systems allow for consideration of cancer cell adaptations crucial for PTT efficacy.

Conclusions:

• 3D culture systems are essential for advancing the study of nanoparticle-based PTT.
• These models bridge the gap between in vitro 2D studies and in vivo preclinical evaluations.
• Further development of 3D models will enhance the translation of PTT strategies for cancer treatment.