Antibacterial Cellulose Nanocrystal-Incorporated Hydrogels With Satisfactory Vascularization for Enhancing Skin Regeneration

Frontiers in Bioengineering and Biotechnology

Changpeng Xu¹  Wenqiang Li²  Haibin Lu³  Mu Zhang⁴  Lei Wan⁴  Xiaoling Li⁴ 

[1] Department of Orthopaedics, Guangdong Second Provincial General Hospital, Guangzhou, China;Engineering Technology Research Center for Sports Assistive Devices of Guangdong, Guangzhou Sport University, Guangzhou, China;Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde), Foshan, China;Stomatological Hospital, Southern Medical University, Guangzhou, China;

关键词: hydrogel;    cellulose nanocrystals;    angiogenesis;    antibacterial activity;    skin regeneration;   

DOI  :  10.3389/fbioe.2022.876936

来源: DOAJ

【 摘 要 】

Wound healing of skin defects remains a significant clinical problem due to inflammation, infection, and dysangiogenesis; especially, the promotion of microvasculature formation in healing of chronic wound or deep skin defects is critical as it supplies oxygen and nutrients to the impaired tissue, relieving uncontrolled inflammatory responses. The cellulose nanocrystals (CNCs) in the liquid crystalline phase, which facilitates cell proliferation and migration, has been shown to improve vascularization effectively. Therefore, we developed a novel injectable hydrogel based on Schiff base and coordination of catechol and Ag. The obtained hydrogels (CCS/CCHO-Ag) exhibited in situ forming properties, satisfactory mechanical performance, controlled release of Ag, antibacterial capacity, and biocompatibility. In addition, the hydrogels could also entirely cover and firmly attach wounds with irregular shapes, so as to reduce the re-injury rate. More importantly, experiments in vitro and in vivo demonstrated that CCS/CCHO-Ag hydrogels can promote neovascularization and tissue regeneration, thanks to their anti-inflammatory and antibacterial effects. In conclusion, these multifunctional hydrogels are well on the way to becoming competitive biomedical dressings, which show tremendous potential application in the field of tissue engineering.

【 授权许可】

Unknown