An anterior cruciate ligament (ACL) injury is one of the most common injuries in sports, and ACL reconstruction with an artificial ligament is a good treatment for quick recovery. However, current artificial ligaments made of polyethylene terephthalate (PET) are still associated with some problems due to the hydrophobic nature and low biological induction activity of PET. Many efforts have been used to improve the biocompatibility of PET in recent years, and our previous work has shown that surface modification is an effective strategy. Here, a hydroxypropylcellulose (HPC) coating was applied on the surface of a PET artificial ligament order to improve its biocompatibility. The effects of the HPC coating on PET artificial ligament graft-bone healing was investigated in vitro using bone marrow stromal cells (BMSCs), fibroblasts, and RSC-364 cells as well as in vivo in a beagle dog model of ACL reconstruction. HPC was coated successfully on the PET and significantly promoted cell growth, adhesion, and capability of osteogenic differentiation compared to the PET graft without HPC coating. In vivo, the HPC coating significantly enhanced ligament tissue regeneration. Moreover, higher expression of some bone-formation- and ligament-tissue-regeneration-contributing proteins and cell factors, such as COL1, BMP-7, COL3, OCN, RUNX2, TGF-beta 1, and VEGF, was observed on the HPC-coated PET artificial ligament in comparison with the pure PET artificial ligament. In conclusion, HPC coating can significantly improve the cytocompatibility and graft-to-bone healing of a PET artificial ligament for ACL reconstruction.
[1]Tongji Univ, Peoples Hosp 10, Dept Orthopaed, Shanghai 200072, Peoples R China;
[2]Fudan Univ, Ctr Sports Med, Shanghai 200040, Peoples R China;
[3]Fudan Univ, Huashan Hosp, Dept Sports Med & Arthroscopy Surg, Shanghai 200040, Peoples R China;
[4]Shanghai Jiao Tong Univ, Shanghai Peoples Hosp 6, Ctr Sports Med, Shanghai 200233, Peoples R China;
[5]Shanghai Jiao Tong Univ, Peoples Hosp 6, Shanghai 200233, Peoples R China;
[6]Wenzhou Med Univ, Cixi Peoples Hosp, Dept Orthopaed, Ningbo 315300, Zhejiang, Peoples R China;
[7]Wenzhou Med Univ, Cixi Hosp, Ningbo 315300, Zhejiang, Peoples R China;
[8]Fudan Univ, Dept Macromol Sci, Minist Educ, Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China;
[9]Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China;
[10]UCL, Dept Phys & Astron, Biophys Grp, Gower St, London WC1E 6BT, England;
[11]Vietnam Acad Sci & Technol, Inst Appl Mat Sci, Ho Chi Minh City 700000, Vietnam;
[12]Vietnam Acad Sci & Technol, Grad Univ Sci & Technol, Ho Chi Minh City 700000, Vietnam
(8.0+极速模式)