Cardiac-derived extracellular matrix: A decellularization protocol for heart regeneration.

Area of Science:

• Biomaterials Science
• Cardiovascular Biology
• Tissue Engineering

Background:

• The heart's extracellular matrix (ECM) is vital for cardiac function and homeostasis.
• Cardiovascular diseases cause significant ECM remodeling and fibrosis, impairing heart function.
• Current therapies for cardiac fibrosis and ECM repair are limited.

Purpose of the Study:

• To present a detailed protocol for generating decellularized cardiac extracellular matrix (d-ECM) from human heart samples.
• To establish a bioactive scaffold for potential use in cardiac tissue engineering and regenerative medicine.

Main Methods:

• Utilized explanted human cardiac tissue from pathological hearts.
• Employed a decellularization process combining sodium dodecyl sulphate (SDS) and Triton X-100.
• Processed cardiac samples into 350 μm thick sections using a cryostat.
• Decellularized sections for 24 hours until a translucent-white appearance was achieved.

Main Results:

• The protocol efficiently preserved the native ECM architecture and protein composition.
• The resulting cardiac d-ECM is a well-preserved scaffold.
• The method demonstrated high reproducibility for cardiac samples.

Conclusions:

• The developed protocol effectively produces cardiac d-ECM scaffolds suitable for cell settlement.
• This d-ECM serves as an ideal scaffold for tissue engineering applications.
• Further considerations include managing microbial contamination and optimizing for tissue-specific applications.