Towards a standardized multi-tissue decellularization protocol for the derivation of extracellular matrix materials

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Biotechnology

Background:

• Current tissue decellularization methods are manual, tissue-specific, and lab-specific, leading to inconsistent extracellular matrix (ECM) material.
• Inconsistent decellularization protocols result in batch variability, hindering comparisons between studies and limiting clinical applications.

Purpose of the Study:

• To develop and validate the first standardized protocol for deriving multiple ECM biomaterials using an automated system.
• To demonstrate the feasibility of producing standardized ECM powders and hydrogels from diverse tissue types.

Main Methods:

• Utilized a previously established automated decellularization system for rapid (4-hour) processing.
• Applied a unified protocol to various tissues including skin, lung, muscle, tendons, cartilage, and larynx.
• Characterized the resulting ECM hydrogels for cytocompatibility, gelation, and rheological properties.

Main Results:

• Successfully produced ECM hydrogels from multiple tissue sources using the automated, unified protocol.
• All derived ECM hydrogels exhibited cytocompatibility and consistent rheological properties.
• The automated method significantly reduced batch-to-batch variability compared to traditional protocols.

Conclusions:

• This study presents a proof-of-concept for a standardized, automated tissue decellularization protocol.
• The developed method offers a fast, scalable, and reproducible approach for generating diverse ECM biomaterials.
• This standardization is crucial for consistent laboratory use and potential clinical translation of ECM-based therapies.