Thermoresponsive and Injectable Hydrogel for Tissue Agnostic Regeneration.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Tissue Engineering

Background:

• Injectable hydrogels offer a temporary matrix for healing, promoting cell ingrowth and neovascularization.
• Current systems face challenges like complex preparation, device issues, dislodgment, and uncontrolled biological responses, limiting clinical use.

Purpose of the Study:

• To engineer a fully synthetic, ready-to-use injectable biomaterial that addresses limitations of existing hydrogel systems.
• To evaluate the biomaterial's ability to remain at the administration site, elicit minimal inflammatory response, and support tissue regeneration.

Main Methods:

• Development of a synthetic, injectable biomaterial designed to form an adhesive hydrogel in situ.
• Assessment of the hydrogel's local inflammatory response and resorption profile in preclinical models.
• Evaluation of tissue regeneration (soft and hard tissues) in preclinical animal studies.
• Pilot clinical trial involving administration to a post-tooth extraction socket site.

Main Results:

• The engineered hydrogel demonstrated adherence at the administration site, irrespective of defect anatomy.
• Negligible local inflammatory response and complete resorption into non-toxic components were observed.
• Preclinical studies confirmed enhanced soft and hard tissue regeneration, supporting host cell ingrowth and neovascularization.
• Clinical trial showed successful administration, clot stabilization, and support for soft and hard tissue regeneration in extraction sockets.

Conclusions:

• The developed injectable hydrogel is a ready-to-use, adhesive biomaterial with high therapeutic potential.
• It effectively supports host cell ingrowth and neovascularization, promoting both soft and hard tissue regeneration.
• This innovative hydrogel addresses unmet clinical needs and shows promise for various applications in regenerative medicine.