Efficiency of high- and low-voltage pulse combinations for gene electrotransfer in muscle, liver, tumor, and skin.

Abstract:

:Gene electrotransfer is gaining momentum as an efficient methodology for nonviral gene transfer. In skeletal muscle, data suggest that electric pulses play two roles: structurally permeabilizing the muscle fibers and electrophoretically supporting the migration of DNA toward or across the permeabilized membrane. To investigate this further, combinations of permeabilizing short high-voltage pulses (HV; hundreds of V/cm) and mainly electrophoretic long low-voltage pulses (LV; tens of V/cm) were investigated in muscle, liver, tumor, and skin in rodent models. The following observations were made: (1) Striking differences between the various tissues were found, likely related to cell size and tissue organization; (2) gene expression is increased, if there was a time interval between the HV pulse and the LV pulse; (3) the HV pulse was required for high electrotransfer to muscle, tumor, and skin, but not to liver; and (4) efficient gene electrotransfer was achieved with HV field strengths below the detectability thresholds for permeabilization; and (5) the lag time interval between the HV and LV pulses decreased sensitivity to the HV pulses, enabling a wider HV amplitude range. In conclusion, HV plus LV pulses represent an efficient and safe option for future clinical trials and we suggest recommendations for gene transfer to various types of tissues.

journal_name

Hum Gene Ther

journal_title

Human gene therapy

authors

André FM,Gehl J,Sersa G,Préat V,Hojman P,Eriksen J,Golzio M,Cemazar M,Pavselj N,Rols MP,Miklavcic D,Neumann E,Teissié J,Mir LM

doi

10.1089/hgt.2008.060

subject

Has Abstract

pub_date

2008-11-01 00:00:00

pages

1261-71

issue

11

eissn

1043-0342

issn

1557-7422

journal_volume

19

pub_type

杂志文章