In vivo tissue engineering: Part I. Concept genesis and guidelines for its realization.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Surgical Innovation

Background:

• Organ failure presents life-threatening challenges, with transplantation facing limitations in availability and host compatibility.
• Current tissue engineering methods often involve complex in vitro cell seeding and can cause significant surgical trauma during implantation.
• There is a need for advanced strategies to facilitate organ regeneration and repair within the body.

Purpose of the Study:

• To propose a novel concept of in vivo tissue engineering for mediating organ healing and regeneration.
• To explore the use of biodegradable polyurethane scaffolds for creating artificial organs within the host.
• To outline a minimally invasive surgical approach for scaffold implantation and in-situ polymer formation.

Main Methods:

• Development of in vitro formed, porous, microcellular scaffolds designed for in vivo cell population.
• Utilizing biodegradable polyurethane systems known for their biocompatibility and tunable properties.
• Envisioning minimally traumatic arthroscopic surgery with a unique polymer delivery system for in-situ scaffold formation.

Main Results:

• The proposed method facilitates spontaneous or augmented cellular infiltration into the scaffold.
• Biodegradable polyurethanes are identified as promising materials due to their structural diversity and biocompatibility.
• The concept lays the groundwork for future research into in vivo organ regeneration.

Conclusions:

• In vivo tissue engineering offers a promising alternative to traditional organ transplantation and in vitro tissue engineering.
• Biodegradable polyurethanes are well-suited for creating scaffolds for in situ organ regeneration.
• This approach has the potential to revolutionize the treatment of organ damage and loss.