Cell shape affects nanoparticle uptake and toxicity: An overlooked factor at the nanobio interfaces.

Area of Science:

• Biotechnology
• Cell Biology
• Nanotoxicology

Background:

• Conventional 2D cell cultures exhibit morphologies and functions distinct from native tissue.
• Discrepancies between 2D culture and in vivo data hinder accurate nanoparticle uptake and toxicology assessments.
• Existing in vitro models do not fully replicate the in vivo three-dimensional (3D) cellular environment.

Purpose of the Study:

• To develop and validate a novel pseudo-3D cell culture platform technology.
• To create more physiologically relevant in vitro models for cell studies.
• To improve the correlation between in vitro and in vivo nanoparticle data.

Main Methods:

• Fibroblast cells (HU02) were cultured on pseudo-3D substrates using a cell imprinting approach.
• Cellular responses to gold nanorod nanoparticles were compared between 2D and pseudo-3D culture models.
• Cytotoxicological assays were employed to evaluate nanoparticle effects.

Main Results:

• Cellular response to nanoparticles is significantly influenced by cell shape.
• Pseudo-3D substrates partially replicate in vivo cell morphology.
• The study demonstrates a difference in nanoparticle response between 2D and pseudo-3D cultures.

Conclusions:

• Pseudo-3D cell culture substrates offer a more accurate model for predicting in vivo cellular responses.
• This technology can enhance the predictive power of in vitro cell culture plates for nanoparticle efficacy.
• Utilizing pseudo-3D models is recommended for more reliable nanotoxicology and efficacy studies.