In Situ Functionalized Polymers for siRNA Delivery.

Area of Science:

• Polymer Chemistry
• Biotechnology
• Materials Science

Background:

• Screening functional polymers for biological applications often requires complex purification steps.
• In situ evaluation under physiological conditions is crucial for assessing true biological activity.

Purpose of the Study:

• To develop a novel, streamlined method for screening the biological activity of functional polymers.
• To enable high-throughput discovery of polymeric materials for biological applications, such as drug/gene delivery.

Main Methods:

• A poly(acryloyl hydrazide) scaffold was functionalized in situ using aldehydes under aqueous conditions to create amphiphilic polymers.
• The transport activity of these polymers was evaluated in situ using model membranes and living cells.
• The method avoids polymer isolation and purification steps.

Main Results:

• The in situ screening method successfully identified a supramolecular polymeric vector.
• This vector demonstrated high efficiency and reproducibility in delivering siRNA into human cells (HeLa-EGFP).
• The developed polymers exhibited amphiphilic properties suitable for biological applications.

Conclusions:

• The reported method provides a blueprint for high-throughput screening of functional polymers.
• This approach accelerates the discovery of novel polymeric materials for diverse biological applications.
• In situ evaluation significantly simplifies the screening process for functional polymers.