Rational Coarse-Grained Molecular Dynamics Simulations of Supramolecular Anticancer Nanotubes

Area of Science:

• Biomaterials Science
• Nanotechnology
• Computational Chemistry

Background:

• Peptide self-assembly enables the creation of nanostructures for biomedical uses.
• Drug amphiphiles (DAs) form nanofilaments and nanotubes with high drug loading and tunable release.

Purpose of the Study:

• To investigate the self-assembly process of DAs using molecular dynamics simulations.
• To analyze the structure and stability of pre-formed DA nanotubes over microsecond timescales.

Main Methods:

• Rational coarse-grained molecular dynamics simulations were employed.
• Simulations focused on aggregation dynamics and nanotube structural characterization.

Main Results:

• DA self-assembly is driven by aromatic interactions, forming a stable, high-density nucleus.
• Nanotube structures exhibit drug-drug stacking and correlations at nanometer scales.
• The observed nucleus and nanotubes remained stable across microsecond timescales.

Conclusions:

• Molecular dynamics simulations provide insights into DA self-assembly mechanisms.
• Findings can guide the rational design of novel drug amphiphiles for advanced drug delivery systems.