Key result
eGFP lentiviral vectors decrease conduction velocity and action potential duration in rat myocytes without cytotoxicity.
Population
Freshly isolated neonatal rat ventricular myocytes (NRVMs) cultured in monolayers
Comparison
Recombinant lentiviral vectors encoding enhanced… vs Monolayers transduced with LVs encoding LacZ or…
Design
Preclinical
Authors
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eGFP may alter myocyte electrophysiology; leaves open reporter suitability for lentiviral cardiac studies.
Lentiviral vectors can safely transduce neonatal rat ventricular myocytes, but eGFP is not physiologically inert as it alters electrophysiological properties.
Sekar et al. (2007) studied this question. Lentiviral vectors encoding eGFP or Kir2.1 vs. LVs encoding LacZ or devoid of a transgene was evaluated on Cytotoxicity and electrophysiological alterations (conduction velocity and action potential duration). Transduction of neonatal rat ventricular myocytes with lentiviral vectors encoding eGFP decreased conduction velocity and action potential duration without inducing cytotoxicity.
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