Related Experiment Videos
Interleukin-10 expression after intramuscular DNA electrotransfer: kinetic studies
Virginie Deleuze1, Daniel Scherman, Michel F Bureau
1UMR 7001 CNRS/ENSCP/Gencell S.A., Centre de Recherche de Vitry-Alforville, 13 quai Jules Guesde, BP 14, 94403, Vitry-sur-Seine Cedex, France.
Biochemical and Biophysical Research Communications
|November 19, 2002
Summary
Electrotransfer enhances muscle production of therapeutic interleukin-10 (IL-10) in mice. While serum IL-10 levels decrease rapidly, muscle IL-10 remains stable for weeks, suggesting sustained therapeutic potential.
Area of Science:
- Gene therapy
- Immunology
- Biotechnology
Background:
- Transfected muscle serves as a tissue for therapeutic protein secretion.
- Electrotransfer enhances skeletal muscle transfection efficiency.
- Interleukin-10 (IL-10) electrotransfer is a promising strategy for chronic diseases.
Purpose of the Study:
- To investigate murine interleukin-10 (mIL-10) production and secretion after intramuscular (i.m.) electrotransfer.
- To characterize the kinetics of mIL-10 expression in serum and muscle tissue.
- To assess the impact of electrotransfer on mIL-10 levels in immunocompetent and SCID mice.
Main Methods:
- Intramuscular electrotransfer of plasmid encoding murine interleukin-10 (mIL-10).
- Quantification of serum and muscle mIL-10 levels (mRNA and protein) over time.
- Comparison of mIL-10 expression kinetics in immunocompetent and severe combined immunodeficiency (SCID) mice.
Main Results:
- Electrotransfer significantly increased serum and muscle mIL-10 levels in immunocompetent mice.
- Serum mIL-10 peaked at 2 days and returned to baseline by 14 days post-electrotransfer.
- Muscle mIL-10 mRNA and protein were detectable up to 84 days, indicating sustained local expression.
- Boost reinjection further elevated circulating mIL-10 levels.
- The rapid decrease in serum mIL-10 was not observed in SCID mice.
Conclusions:
- Intramuscular electrotransfer is an effective method for inducing sustained local interleukin-10 (IL-10) production in muscle tissue.
- While systemic IL-10 levels are transient, muscle-resident IL-10 expression persists, offering potential for localized, long-term therapeutic effects.
- Differences in serum IL-10 kinetics between immunocompetent and SCID mice warrant further investigation into immune-mediated clearance mechanisms.