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Biomedical subjects

J A Saunders

Publications and source records attributed to J A Saunders.

39 records · Page 3Linked to original sources
PubMedDate not supplied

Reshaping human monoclonal antibodies for imaging and therapy.

Current problems in obtaining suitable monoclonal antibodies (MoAbs) for in vivo imaging and therapy can now be bypassed using protein-engineering rather than conventional hybridoma technology. Rodent antibody binding sites can be grafted onto human acceptor antibodies thus reshaping the human MoAbs into reagents with more desired specificities. We successfully exploited this technology to produce two reshaped human antibodies with the same specificities and very similar binding abilities as demonstrated for the mouse antibodies H17E2 and HMFG1.

Alkaline Phosphatase↗
PubMedDate not supplied

Effects of electroporation pulse wave on the incorporation of viral RNA into tobacco protoplasts.

The uptake and expression of cucumber mosaic viral (CMV) RNA by tobacco protoplasts was examined using both square wave and exponential wave electroporation pulses. These electropulses, when supplied at sufficient field strength for a critical duration, enabled RNA to be incorporated and expressed in more than 60% of the surviving protoplasts. The results of experiments using these two electroporation wave forms showed significant differences in RNA uptake and expression. The number of viable protoplasts and cells showing expression of RNA was higher over a much broader range of experimental conditions using the square rather than exponential wave generator, even when both machines were optimized for maximal performance. However, at a narrow range of low field strengths the exponential wave pulse generated a higher percentage of transformants than did the square wave pulse. It was shown that after an electroporation pulse from either wave form, there were viable cells which expressed foreign RNA at predictable levels.

Biotechnology↗