Nano Archive

Coplanar film electrodes facilitate bovine nuclear transfer cloning

Clow, Andrew and Gaynor, Paul and Oback, Björn (2009) Coplanar film electrodes facilitate bovine nuclear transfer cloning. Biomedical Microdevices, 11 (4). pp. 851-859.

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Abstract

Automated lab on chip systems offer increased throughput and reproducibility, but the implementation of microelectrodes presently relies on miniaturisation of parallel plate electrodes that are time consuming and costly to fabricate. Electric field modelling of open electrofusion chambers suggested that widely spaced (≥2 mm) coplanar film electrodes should result in similar cell fusion rates as parallel plate electrodes provided the cell positioning was roughly midway between the electrodes. This hypothesis was investigated by electrofusion trials of bovine oocyte-donor cell couplets used in nuclear transfer (NT) cloning. Comparative experiments with reference parallel plate electrodes were conducted as controls. Coplanar fusion rates ≥ 90% were demonstrated for embryonic blastomeres, follicular cells and fetal and adult fibroblasts as NT donor cells. For embryonic and adult cell types, there was no significant difference in fusion rate between coplanar and parallel plate electrodes. For both electrode geometries, fusion efficiency with adult fibroblasts was highest at a calculated field strength of 2.33 kV/cm. The coplanar electrodes required a voltage π/2 times greater than parallel plate electrodes to achieve equivalent field strength when the couplets are placed midway between the electrodes.

Item Type:Article
Uncontrolled Keywords:Cloning - Bovine - Nuclear transfer - Electrofusion
Subjects:Biomedical Science > Nanobiotechnology
ID Code:5847
Deposited By:IoN
Deposited On:24 Aug 2009 12:09
Last Modified:25 Aug 2009 17:16

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