Decellularized Tumor Tissues Integrated with Polydopamine for Wound Healing

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Tissue Engineering

Background:

• Natural biomaterials are crucial for wound healing, requiring both antimicrobial and regenerative properties.
• Developing advanced wound healing solutions is a key focus in regenerative medicine.

Purpose of the Study:

• To construct a novel scaffold for wound healing using decellularized human colon tumor (DHCT) material.
• To evaluate the antimicrobial and tissue regenerative capabilities of the engineered scaffold.

Main Methods:

• Fabrication of a DHCT-derived scaffold using microfluidic bioprinting.
• Incorporation of polydopamine coating for enhanced functionality.
• Assessment of cell migration, angiogenesis, tissue adhesion, and antibacterial efficacy.
• In vivo testing on acute extensive wounds.

Main Results:

• The DHCT scaffold retained essential growth factors and collagen structure, promoting tissue repair.
• The scaffold demonstrated superior cell migration and angiogenesis.
• Polydopamine coating provided tissue adhesion and a potent photothermal effect.
• Near-infrared irradiation resulted in >90% antibacterial rate.
• In vivo studies confirmed accelerated healing of extensive wounds.

Conclusions:

• The polydopamine-integrated DHCT scaffold effectively promotes wound healing and possesses significant antimicrobial capabilities.
• Tumor-derived biomaterials show considerable promise for clinical applications in wound management.