ECM-Preserving Decellularization of Dermis via Subtle Cell Membrane Disruption Induced by Subcritical Dimethyl Ether

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Biotechnology

Background:

• Decellularized tissues are crucial biomaterials for transplantation.
• Current methods often use surfactants, raising toxicity concerns.
• A safer, effective decellularization technique is needed.

Purpose of the Study:

• To develop and evaluate a novel decellularization method using subcritical dimethyl ether (DME).
• To compare the efficacy and safety of DME-based decellularization with traditional surfactant methods.
• To investigate the mechanism of DME-induced decellularization.

Main Methods:

• Porcine dermis was decellularized using subcritical DME perfusion.
• DNA degradation was performed using DNase treatment.
• In vitro and in vivo studies assessed cell response.
• The mechanism of cell membrane and nucleus removal was analyzed.

Main Results:

• Subcritical DME decellularization effectively removed cellular components while preserving some cell membrane structures.
• The resulting DME-decellularized dermis demonstrated good biocompatibility in vitro and in vivo.
• Compared to surfactants, DME caused less cell membrane damage and facilitated nucleus removal via DNase treatment.

Conclusions:

• Subcritical DME is a non-toxic and effective agent for decellularizing tissues.
• DME-decellularized tissues exhibit potential for developing advanced biomaterials, including those incorporating extracellular vesicles.
• This method presents a promising alternative to surfactant-based decellularization for tissue engineering applications.