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Updated: Mar 25, 2026
Direct Intrathecal Injection of Recombinant Adeno-associated Viruses in Adult Mice
Published on: February 15, 2019
Effect of adenovirus-mediated RNA interference of IL-1β expression on spinal cord injury in rats
1Department of Orthopedic Surgery, The Second Affiliated Hospital, Fujian Medical University, Fujian Province, People's Republic of China.
Study Design:
We introduced an adenoviral vector expressing interleukin-1β (IL-1β) small-hairpin RNA (shRNA) into the injured spinal cords to evaluate the therapeutic potential of IL-1β downregulation in a rat model of spinal cord injury (SCI).
Objectives:
The purpose of this study was to investigate the possible protective effects of the IL-1β downregulation on traumatic SCI in rats.
Setting:
Department of Orthopedic Surgery, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, People's Republic of China.
Methods:
An adenoviral shRNA targeting IL-1β was constructed and injected at the T12 section 7 days before SCI. The rats' motor functions were evaluated by the Basso-Beattie-Bresnahan (BBB) rating scale. Immunofluorescence, enzyme-linked immunosorbent assay, flow-cytometric analysis and western blots were also performed.
Results:
Animals downregulating IL-1β had significantly better recovery of locomotor function and less neuronal loss after SCI. In addition, IL-1β downregulation significantly decreased tumor necrosis factor-alpha (TNF-α) level and Bax expression, reduced the activity of caspase-3 and increased Bcl-2 expression after SCI.
Conclusion:
This study demonstrated that the IL-1β downregulation may have potential therapeutic benefits for both reducing secondary damages and improving the outcomes after traumatic SCI.
