3D Hepatocyte Model with Composite Nanofibers That Reproduced Human In Vivo Drug Clearance Profiles

Area of Science:

• Biotechnology
• Hepatology
• Tissue Engineering

Background:

• Traditional 2D cell cultures lack the complex microenvironment of the human liver.
• Developing physiologically relevant in vitro models is crucial for accurate drug development.
• Mimicking the liver's extracellular matrix (ECM) is key to enhancing hepatocyte function.

Purpose of the Study:

• To develop a novel in vitro 3D hepatocyte model utilizing a nanofibrous scaffold.
• To create a 3D-printed device for housing the ECM scaffold in standard well plates.
• To evaluate the metabolic activity and drug clearance capacity of hepatocytes in this new 3D model compared to 2D cultures.

Main Methods:

• Fabrication of a nanofibrous scaffold mimicking liver ECM structure and biochemistry.
• Development of a modular 3D-printed device for scaffold integration.
• Culture of HepaRG hepatocytes on the scaffold and in 2D.
• Assessment of metabolic activity and drug clearance (lidocaine, clozapine, fluoxetine).

Main Results:

• Hepatocytes cultured on the scaffold showed enhanced metabolic activity compared to 2D cultures.
• Drug clearance rates in the 3D model closely matched in vivo literature data.
• 2D cultures exhibited limited metabolic capacity for the tested drugs.
• The 3D model demonstrated improved hepatocyte functionality and liver-specific performance.

Conclusions:

• The novel in vitro 3D hepatocyte model with a nanofibrous ECM scaffold offers enhanced functionality.
• This model provides a physiologically relevant platform for studying hepatocyte behavior.
• The findings support the model's potential for advancing preclinical drug development through improved in vitro liver replication.