Nature-Inspired Alternatives to PEG for Next-Generation Long-Circulating Nanocarriers

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery

Background:

• Polyethylene glycol (PEG) is the standard for nanocarrier stealth properties.
• Emerging anti-PEG antibodies necessitate alternative strategies.
• Biological systems offer inspiration for advanced nanocarrier design.

Purpose of the Study:

• To explore nature-inspired alternatives to PEG for nanocarriers.
• To discuss the use of cell membranes and protein corona mimics.
• To highlight challenges and future directions for long-circulating nanocarriers.

Main Methods:

• Review of current literature on nanocarrier stealth strategies.
• Analysis of biomimetic approaches using cell membranes and protein corona.
• Identification of challenges and research opportunities.

Main Results:

• Cell membranes and protein corona can be engineered into nanocarriers.
• These biomimetic approaches offer prolonged circulation and improved biocompatibility.
• Active targeting capabilities can be integrated into nature-inspired nanocarriers.

Conclusions:

• Nature-inspired alternatives show promise for overcoming PEG limitations.
• Further research is needed to address challenges in implementing these strategies.
• Development of next-generation long-circulating nanocarriers is feasible through biomimicry.