Biopolymer-based supramolecular micelles from β-cyclodextrin and methylcellulose

Area of Science:

• Polymer Science
• Materials Science
• Nanotechnology

Background:

• Supramolecular polymer micelles (SMPMs) are advanced drug delivery systems.
• Natural polymers offer biocompatible and sustainable alternatives for micelle construction.

Purpose of the Study:

• To construct SMPMs using natural polymers like methylcellulose (MC) and cyclodextrins (CDs).
• To evaluate the drug release capabilities of these novel SMPMs for potential therapeutic applications.

Main Methods:

• One-pot self-assembly of MC with beta-cyclodextrin (β-CD) and maleic anhydride modified beta-cyclodextrin (MAh-β-CD).
• Characterization of micelle size, shape, and critical micelle concentrations (CMCs) using fluorescence spectroscopy.
• In vitro drug release studies using prednisone acetate as a model drug.

Main Results:

• Spherical SMPMs with diameters of 25±5 nm were successfully synthesized.
• MC/β-CD and MC/MAh-β-CD SMPMs exhibited CMCs of 15.13 and 20.89 mg/L, respectively.
• MC/MAh-β-CD SMPMs demonstrated a drug-enrichment core and sustained drug release for 700 hours.

Conclusions:

• Novel SMPMs were fabricated from readily available natural polymers.
• The MC/MAh-β-CD SMPMs show significant potential for sustained drug delivery applications.
• These findings highlight the utility of natural polymers in developing advanced nanocarriers.