2. Academic Validation
  3. Lipid nanoparticle-assisted miR29a delivery based on core-shell nanofibers improves tendon healing by cross-regulation of the immune response and matrix remodeling

Lipid nanoparticle-assisted miR29a delivery based on core-shell nanofibers improves tendon healing by cross-regulation of the immune response and matrix remodeling

  • Biomaterials. 2022 Nov 12;291:121888. doi: 10.1016/j.biomaterials.2022.121888.
Wei Chen 1,  Yi Chen 2,  Yiming Ren 3,  Cangjian Gao 3,  Chao Ning 4,  Haotian Deng 3,  Peiqi Li 3,  Yang Ma 4,  Hao Li 3,  Liwei Fu 3,  Guangzhao Tian 3,  Zhen Yang 3,  Xiang Sui 4,  Zhiguo Yuan 5,  Quanyi Guo 6,  Shuyun Liu 7
Affiliations

Affiliations

  • 1 Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China; School of Medicine, Nankai University, Tianjin, 300071, China. Electronic address: weich_doctor@163.com.
  • 2 School of Medicine, Nankai University, Tianjin, 300071, China; Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China. Electronic address: yichen_doctor@163.com.
  • 3 Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China; School of Medicine, Nankai University, Tianjin, 300071, China.
  • 4 Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China.
  • 5 Department of Bone and Joint Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China. Electronic address: yzgad@163.com.
  • 6 Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China; School of Medicine, Nankai University, Tianjin, 300071, China. Electronic address: doctorguo_301@163.com.
  • 7 Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China; School of Medicine, Nankai University, Tianjin, 300071, China. Electronic address: clear_ann@163.com.
PMID: 36403324 DOI: 10.1016/j.biomaterials.2022.121888
Abstract

Inferior healing and peritendinous adhesions are the major clinical problems following Achilles tendon injury, leading to impaired motor function and an increased risk of re-rupture. These complications are presumed to be inextricably linked to inflammation and fibroscar formation. Here, microRNA29a is identified as a promising therapeutic target for tendon injury through the cross-regulation of the immune response and matrix remodeling. MiR29a-LNPs were successfully prepared by microfluidic technology. They are then loaded into the core-shell nanofibers to achieve local delivery in the injured tendon, where the shell layer is composed of PELA for anti-adhesion. Our studies reveal that miR29a regulates collagen synthesis and NF-κB activation in tenocytes, and promotes macrophage polarization by inhibiting the inflammasome pathway. In vivo studies of the Achilles tendon-rupture model indicate the best repair in the miR29a group, as evidenced by superior collagen composition and alignment, higher mechanical strength, and better functional recovery. In conclusion, a functionalized anti-adhesive membrane that promotes nascent tendon matrix remodeling and improves the regenerative immune microenvironment is developed for the treatment of tendon injury.

Keywords

Coaxial electrospun; Immune regulation; Lipid nanoparticles; Matrix remodeling; MicroRNA-29a; Tendon.

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