Stability measurements of antisense oligonucleotides by capillary gel electrophoresis.
Identifieur interne : 002812 ( PubMed/Corpus ); précédent : 002811; suivant : 002813Stability measurements of antisense oligonucleotides by capillary gel electrophoresis.
Auteurs : G J Bruin ; K O Börnsen ; D. Hüsken ; E. Gassmann ; H M Widmer ; A. PaulusSource :
- Journal of chromatography. A [ 0021-9673 ] ; 1995.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Endonucleases, Oligonucleotides, Antisense, Poly T.
- chemical , enzymology : Snake Venoms.
- methods : Electrophoresis, Mass Spectrometry.
- Base Sequence, Molecular Sequence Data.
Abstract
The approach of using antisense oligonucleotides as potential drugs is based on hybridization of a short chemically-modified oligonucleotide with complementary cellular DNA or RNA sequences. A critical question is the stability of chemically modified antisense oligonucleotides in cellular environments. In a model system, resistance against various nucleases was evaluated by capillary gel electrophoresis (CGE). For some of the samples, matrix assisted laser desorption and ionization mass spectrometry (MALDI-MS) was used as an additional analytical tool to perform stability measurements. Using CGE, the enzymatic degradation of single nucleotides from the oligomer can be followed after different incubation times. 10% T polyacrylamide gels give baseline resolution for oligonucleotides ranging between 5 and 30 bases in length. The kinetic influence of a specific nuclease concentration and the antisense oligonucleotide structure on the cleavage reaction are discussed. Also, a simple desalting method to improve the injection efficiency and sensitivity of the method are described. Examples of measurements of chemically modified antisense 19-mers are presented.
DOI: 10.1016/0021-9673(95)00231-b
PubMed: 7581844
Links to Exploration step
pubmed:7581844Le document en format XML
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<author><name sortKey="Bornsen, K O" sort="Bornsen, K O" uniqKey="Bornsen K" first="K O" last="Börnsen">K O Börnsen</name>
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<author><name sortKey="Husken, D" sort="Husken, D" uniqKey="Husken D" first="D" last="Hüsken">D. Hüsken</name>
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<author><name sortKey="Gassmann, E" sort="Gassmann, E" uniqKey="Gassmann E" first="E" last="Gassmann">E. Gassmann</name>
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<author><name sortKey="Widmer, H M" sort="Widmer, H M" uniqKey="Widmer H" first="H M" last="Widmer">H M Widmer</name>
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<term>Molecular Sequence Data</term>
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<front><div type="abstract" xml:lang="en">The approach of using antisense oligonucleotides as potential drugs is based on hybridization of a short chemically-modified oligonucleotide with complementary cellular DNA or RNA sequences. A critical question is the stability of chemically modified antisense oligonucleotides in cellular environments. In a model system, resistance against various nucleases was evaluated by capillary gel electrophoresis (CGE). For some of the samples, matrix assisted laser desorption and ionization mass spectrometry (MALDI-MS) was used as an additional analytical tool to perform stability measurements. Using CGE, the enzymatic degradation of single nucleotides from the oligomer can be followed after different incubation times. 10% T polyacrylamide gels give baseline resolution for oligonucleotides ranging between 5 and 30 bases in length. The kinetic influence of a specific nuclease concentration and the antisense oligonucleotide structure on the cleavage reaction are discussed. Also, a simple desalting method to improve the injection efficiency and sensitivity of the method are described. Examples of measurements of chemically modified antisense 19-mers are presented.</div>
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<Abstract><AbstractText>The approach of using antisense oligonucleotides as potential drugs is based on hybridization of a short chemically-modified oligonucleotide with complementary cellular DNA or RNA sequences. A critical question is the stability of chemically modified antisense oligonucleotides in cellular environments. In a model system, resistance against various nucleases was evaluated by capillary gel electrophoresis (CGE). For some of the samples, matrix assisted laser desorption and ionization mass spectrometry (MALDI-MS) was used as an additional analytical tool to perform stability measurements. Using CGE, the enzymatic degradation of single nucleotides from the oligomer can be followed after different incubation times. 10% T polyacrylamide gels give baseline resolution for oligonucleotides ranging between 5 and 30 bases in length. The kinetic influence of a specific nuclease concentration and the antisense oligonucleotide structure on the cleavage reaction are discussed. Also, a simple desalting method to improve the injection efficiency and sensitivity of the method are described. Examples of measurements of chemically modified antisense 19-mers are presented.</AbstractText>
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