Destructing the Plasma Membrane with Activatable Vesicular DNA Nanopores

Area of Science:

• Biochemistry
• Nanotechnology
• Oncology

Background:

• Pore-forming proteins are crucial in biological processes and have therapeutic potential in cancer treatment.
• Existing DNA nanopores struggle with efficient incorporation into lipid bilayers.

Purpose of the Study:

• To develop a novel DNA nanopore system for controlled lipid membrane perforation.
• To investigate the therapeutic efficacy of these novel DNA nanopores in cancer models.

Main Methods:

• Design and synthesis of fusogenic liposome-incorporated transmembrane DNA nanopores (FLIPs).
• Utilizing low pH conditions for steric deshielding and controlled membrane perforation.
• Assessing FLIPs' effect on plasma membrane depolarization and pyroptosis-like cell death.
• Evaluating FLIPs' anti-tumor efficacy in murine tumor models.

Main Results:

• FLIPs demonstrate controlled perforation of lipid bilayers.
• FLIPs induce plasma membrane depolarization, leading to pyroptosis-like cell death.
• FLIPs effectively inhibit tumor growth in preclinical cancer models.

Conclusions:

• Vesicular DNA nanopores (FLIPs) offer a controllable method for lipid membrane perforation.
• FLIPs show significant potential as a novel therapeutic strategy for cancer nanotherapy.