Open AccessDNA‐Grafted Hyaluronic Acid System with Enhanced Injectability and Biostability for Photo‐Controlled Osteoarthritis Gene Therapy
Author(s) -
Chen Zhijie,
Zhang Feng,
Zhang Hongbo,
Cheng Liang,
Chen Kaizhe,
Shen Jieliang,
Qi Jin,
Deng Lianfu,
He Chuan,
Santos Hélder A.,
Cui Wenguo
Publication year - 2021
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202004793
Subject(s) - hyaluronic acid , genetic enhancement , oligonucleotide , internalization , osteoarthritis , gene delivery , cartilage , proteases , in vivo , dna , catabolism , chemistry , nucleic acid , microbiology and biotechnology , in vitro , cell , biophysics , biochemistry , gene , biology , medicine , enzyme , anatomy , pathology , alternative medicine
Abstract Gene therapy is identified as a powerful strategy to overcome the limitations of traditional therapeutics to achieve satisfactory effects. However, various challenges related to the dosage form, delivery method, and, especially, application value, hampered the clinical transition of gene therapy. Here, aiming to regulate the cartilage inflammation and degeneration related abnormal IL‐1 β mRNA expression in osteoarthritis (OA), the interference oligonucleotides is integrated with the Au nanorods to fabricate the spherical nucleic acids (SNAs), to promote the stability and cell internalization efficiency. Furthermore, the complementary oligonucleotides are grafted onto hyaluronic acid (HA) to obtained DNA‐grafted HA ( DNA HA) for SNAs delivery by base pairing, resulting in significantly improved injectability and bio‐stability of the system. After loading SNAs, the constructed DNA HA‐SNAs system (HA‐SNAs) performs a reversible NIR‐triggered on‐demand release of SNAs by photo‐thermal induced DNA dehybridization and followed by post‐NIR in situ hybridization. The in vitro and in vivo experiments showed that this system down‐regulated catabolic proteases and up‐regulated anabolic components in cartilage over extended periods of time, to safeguard the chondrocytes against degenerative changes and impede the continual advancement of OA.