Therapeutic Potential of Combinative shRNA-Encoded Lentivirus-Mediated Gene Silencing to Accelerate Somatosensory Recovery After Spinal Cord Trauma

Jonghyuck Park, Matthew Farmer, Camara Casson, Irina Kalashnikova, Daniel Kolpek

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Neuropathic pain following spinal cord injury (SCI) remains a difficult problem that affects more than 80% of SCI patients. Growing evidence indicates that neuroinflammatory responses play a key role in neuropathic pain after SCI. Short hairpin RNA (shRNA) interference is an efficient tool for the knockdown of disease-related specific gene expression after SCI, yet insufficient data is available to establish guidelines. In this study, we have constructed the transient receptor potential ankyrin 1 (TRPA1) shRNA encoded-lentiviral vector (LV-shTRPA1) and P38 MAPK shRNA encoded-lentiviral vector (LV-shP38) to investigate the silencing effects of shRNAs and their ability to reprogram the neuroinflammatory responses, thereby enhancing somatosensory recovery after SCI. Our in vitro data employing HEK293-FT and activated macrophages demonstrated that delivered LV-shRNAs showed high transduction efficacy with no cytotoxicity. Furthermore, a combination of LV-shP38 and LV-shTRPA1 was found to be most effective at suppressing target genes, cutting the expression of pro-inflammatory and pro-nociceptive factors in the dorsal horn of the spinal cord and dorsal root ganglia, thus contributing to the alleviation of neuronal hypersensitivities after SCI. Overall, our data demonstrated that the combination LV-shP38/shTRPA1 produced a synergistic effect for immunomodulation and reduced neuropathic pain with a favorable risk-to-benefit ratio. Collectively, our LV-mediated shRNA delivery will provide an efficient tool for gene silencing therapeutic approaches to treat various incurable disorders.

Original languageEnglish
Pages (from-to)564-577
Number of pages14
JournalNeurotherapeutics
Volume20
Issue number2
DOIs
StatePublished - Mar 2023

Bibliographical note

Publisher Copyright:
© 2022, The American Society for Experimental Neurotherapeutics, Inc.

Keywords

  • Gene silence
  • Immunomodulation
  • Lentivirus
  • Neuropathic pain
  • Short hairpin RNA
  • Spinal cord injury

ASJC Scopus subject areas

  • Pharmacology
  • Clinical Neurology
  • Pharmacology (medical)

Fingerprint

Dive into the research topics of 'Therapeutic Potential of Combinative shRNA-Encoded Lentivirus-Mediated Gene Silencing to Accelerate Somatosensory Recovery After Spinal Cord Trauma'. Together they form a unique fingerprint.

Cite this