High-efficiency adenovirus-mediated in vivo gene transfer into neonatal and adult rodent skeletal muscle

Mohan K. Sapru*, Kathleen M. McCormick, Bayar Thimmapaya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Several methodological limitations have emerged in the use of viral gene transfer into skeletal muscle. First, because the nuclei of mature muscle fibers do not undergo division, the use of strategies involving replicative integration of exogenous DNA is greatly limited. Another important limitation concerns the maturation-dependent loss in muscle fiber infectivity with adenoviral vectors. In this study, we investigated the possibility that high-titer infections with recombinant adenovirus, expressing a foreign marker gene under the control of a strong viral promoter, can significantly improve the efficiency of gene transfer in vivo into neonatal and adult rat skeletal muscle. High-titer (2×1010 plaque forming units) intramuscular injection of replication-defective adenovirus vector, expressing green fluorescent protein (GFP) under the control of cytomegalovirus promoter, resulted in GFP expression in 99±0.34% of fibers in the adult soleus muscle and in approximately 85±1.44% of fibers in the adult tibialis anterior muscle. Interestingly, reduction in injected adenoviral dose significantly reduced the number of GFP-positive fibers in the adult tibialis anterior muscle, but not in the soleus muscle. However, in neonates, adenoviral infection resulted in GFP expression in 96-99% of the fibers in the tibialis anterior and the gastrocnemius muscles regardless of administered adenoviral dose.

Original languageEnglish (US)
Pages (from-to)99-106
Number of pages8
JournalJournal of Neuroscience Methods
Volume114
Issue number1
DOIs
StatePublished - Feb 15 2002

Keywords

  • Adenoviral vectors
  • Gene expression
  • Gene therapy
  • Gene transfer
  • Methodology
  • Skeletal muscle

ASJC Scopus subject areas

  • Neuroscience(all)

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