Affiliation:
1. Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital Shanghai JiaoTong University School of Medicine 639 Zhi Zao Ju Road Shanghai 200011 P. R. China
2. Department of Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Shanghai Institute of Traumatology and Orthopaedics Ruijin Hospital Shanghai Jiao Tong University School of Medicine 197 Ruijin 2nd Road Shanghai 200025 P. R. China
Abstract
AbstractThe cellular functions, such as tissue‐rebuilding ability, can be directly affected by the metabolism of cells. Moreover, the glucose metabolism is one of the most important processes of the metabolism. However, glucose cannot be efficiently converted into energy in cells under ischemia hypoxia conditions. In this study, a high‐energy intermediate fructose hydrogel (HIFH) is developed by the dynamic coordination between sulfhydryl‐functionalized bovine serum albumin (BSA‐SH), the high‐energy intermediate in glucose metabolism (fructose‐1,6‐bisphosphate, FBP), and copper ion (Cu2+). This hydrogel system is injectable, self–healing, and biocompatible, which can intracellularly convert energy with high efficacy by regulating the glucose metabolism in situ. Additionally, the HIFH can greatly boost cell antioxidant capacity and increase adenosine triphosphate (ATP) in the ischemia anoxic milieu by roughly 1.3 times, improving cell survival, proliferation and physiological functions in vitro. Furthermore, the ischemic skin tissue model is established in rats. The HIFH can speed up the healing of damaged tissue by promoting angiogenesis, lowering reactive oxygen species (ROS), and eventually expanding the healing area of the damaged tissue by roughly 1.4 times in vivo. Therefore, the HIFH can provide an impressive perspective on efficient in situ cell energy supply of damaged tissue.
Funder
National Natural Science Foundation of China
Science and Technology Commission of Shanghai Municipality
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry