[Separation of phosphodiester oligodeoxynucleotides and phosphorothioate antisense oligodeoxynucleotides by capillary zone electrophoresis at low pH].
Identifieur interne : 002190 ( PubMed/Curation ); précédent : 002189; suivant : 002191[Separation of phosphodiester oligodeoxynucleotides and phosphorothioate antisense oligodeoxynucleotides by capillary zone electrophoresis at low pH].
Auteurs : Qian Li [République populaire de Chine] ; Rong Chen ; Yuqing Sun ; Yuzhu HuSource :
- Se pu = Chinese journal of chromatography [ 1000-8713 ] ; 2007.
Descripteurs français
- KwdFr :
- Concentration en ions d'hydrogène, Oligodésoxyribonucléotides (), Oligodésoxyribonucléotides (isolement et purification), Oligodésoxyribonucléotides antisens (), Oligodésoxyribonucléotides antisens (isolement et purification), Oligonucléotides phosphorothioates (), Oligonucléotides phosphorothioates (isolement et purification), Reproductibilité des résultats, Électrophorèse capillaire ().
- MESH :
- isolement et purification : Oligodésoxyribonucléotides, Oligodésoxyribonucléotides antisens, Oligonucléotides phosphorothioates.
- Concentration en ions d'hydrogène, Oligodésoxyribonucléotides, Oligodésoxyribonucléotides antisens, Oligonucléotides phosphorothioates, Reproductibilité des résultats, Électrophorèse capillaire.
English descriptors
- KwdEn :
- Electrophoresis, Capillary (methods), Hydrogen-Ion Concentration, Oligodeoxyribonucleotides (chemistry), Oligodeoxyribonucleotides (isolation & purification), Oligodeoxyribonucleotides, Antisense (chemistry), Oligodeoxyribonucleotides, Antisense (isolation & purification), Phosphorothioate Oligonucleotides (chemistry), Phosphorothioate Oligonucleotides (isolation & purification), Reproducibility of Results.
- MESH :
- chemical , chemistry : Oligodeoxyribonucleotides, Oligodeoxyribonucleotides, Antisense, Phosphorothioate Oligonucleotides.
- chemical , isolation & purification : Oligodeoxyribonucleotides, Oligodeoxyribonucleotides, Antisense, Phosphorothioate Oligonucleotides.
- methods : Electrophoresis, Capillary.
- Hydrogen-Ion Concentration, Reproducibility of Results.
Abstract
Oligodeoxynucleotides (ODNs) may possess biological activity in vivo, and are used for the cancer therapeusis. Synthesized ODNs contains many by-products, and so their purity check and resolution of single-base, i. e., the separation of ODNs differing by one nucleotide in length, become necessary. In this study, capillary zone electrophoresis (CZE) method was developed for the separation of two sets of model compounds of single-stranded oligodeoxynucleotide mixtures (18 - 20 mers), phosphodiester oligodeoxynucleotides (PO-ODNs) and their phosphorothioate modifications (PS-ODNs), with equal sequences differing in a single base. The effects of the CZE operating parameters on the separation were investigated and optimized to further improve the resolution, such as the pH values and the concentrations of running buffer, the varieties and concentrations of additives, the separation voltage as well as the temperature. It was confirmed that the pH value of the buffer played the most important role in the separation, and the urea used as the additive in the system improved significantly the resolution of PS-ODNs. Consequently, the PO-ODNs and PS-ODNs mixtures could be single-based separated on a fused-silica capillary of 50 microm x 49.0 cm (40.7 cm of effective length) under the optimum conditions: the running buffer system of 50 mmol/L NaH2PO4-H3PO4 (pH 2.24)-7 mol/L urea, the pressure injection of 2 kPa x 10 s, the separation voltage of -20 kV, the column temperature of 25 degrees C, and the ultraviolet (UV) detection at 260 nm. The average resolutions for the separation of 18 - 19 mers and 19 - 20 mers of PO-ODNs were 4.68 and 3.20, respectively; and the average resolutions for the separation of 18 - 19 mers and 19 - 20 mers of PS-ODNs were 1.23 and 0.81, respectively. The relative standard deviations of the migration time and the resolution were all less than 5%. This method will be useful for the qualification of PO-ODNs and PS-ODNs samples as they are used in antisense drug development due to the relatively easy operation and good reproducibility of the method in comparing with the capillary gel electrophoresis.
PubMed: 17432586
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<affiliation wicri:level="1"><nlm:affiliation>Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210038, China. lqianlqian@yahoo.com.cn</nlm:affiliation>
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<wicri:regionArea>Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210038</wicri:regionArea>
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<author><name sortKey="Chen, Rong" sort="Chen, Rong" uniqKey="Chen R" first="Rong" last="Chen">Rong Chen</name>
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<author><name sortKey="Sun, Yuqing" sort="Sun, Yuqing" uniqKey="Sun Y" first="Yuqing" last="Sun">Yuqing Sun</name>
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<author><name sortKey="Hu, Yuzhu" sort="Hu, Yuzhu" uniqKey="Hu Y" first="Yuzhu" last="Hu">Yuzhu Hu</name>
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<author><name sortKey="Li, Qian" sort="Li, Qian" uniqKey="Li Q" first="Qian" last="Li">Qian Li</name>
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<term>Hydrogen-Ion Concentration</term>
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<term>Oligodeoxyribonucleotides (isolation & purification)</term>
<term>Oligodeoxyribonucleotides, Antisense (chemistry)</term>
<term>Oligodeoxyribonucleotides, Antisense (isolation & purification)</term>
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<term>Oligodésoxyribonucléotides ()</term>
<term>Oligodésoxyribonucléotides (isolement et purification)</term>
<term>Oligodésoxyribonucléotides antisens ()</term>
<term>Oligodésoxyribonucléotides antisens (isolement et purification)</term>
<term>Oligonucléotides phosphorothioates ()</term>
<term>Oligonucléotides phosphorothioates (isolement et purification)</term>
<term>Reproductibilité des résultats</term>
<term>Électrophorèse capillaire ()</term>
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<term>Phosphorothioate Oligonucleotides</term>
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<term>Oligodeoxyribonucleotides, Antisense</term>
<term>Phosphorothioate Oligonucleotides</term>
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<term>Oligodésoxyribonucléotides antisens</term>
<term>Oligonucléotides phosphorothioates</term>
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<term>Oligodésoxyribonucléotides antisens</term>
<term>Oligonucléotides phosphorothioates</term>
<term>Reproductibilité des résultats</term>
<term>Électrophorèse capillaire</term>
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<front><div type="abstract" xml:lang="en">Oligodeoxynucleotides (ODNs) may possess biological activity in vivo, and are used for the cancer therapeusis. Synthesized ODNs contains many by-products, and so their purity check and resolution of single-base, i. e., the separation of ODNs differing by one nucleotide in length, become necessary. In this study, capillary zone electrophoresis (CZE) method was developed for the separation of two sets of model compounds of single-stranded oligodeoxynucleotide mixtures (18 - 20 mers), phosphodiester oligodeoxynucleotides (PO-ODNs) and their phosphorothioate modifications (PS-ODNs), with equal sequences differing in a single base. The effects of the CZE operating parameters on the separation were investigated and optimized to further improve the resolution, such as the pH values and the concentrations of running buffer, the varieties and concentrations of additives, the separation voltage as well as the temperature. It was confirmed that the pH value of the buffer played the most important role in the separation, and the urea used as the additive in the system improved significantly the resolution of PS-ODNs. Consequently, the PO-ODNs and PS-ODNs mixtures could be single-based separated on a fused-silica capillary of 50 microm x 49.0 cm (40.7 cm of effective length) under the optimum conditions: the running buffer system of 50 mmol/L NaH2PO4-H3PO4 (pH 2.24)-7 mol/L urea, the pressure injection of 2 kPa x 10 s, the separation voltage of -20 kV, the column temperature of 25 degrees C, and the ultraviolet (UV) detection at 260 nm. The average resolutions for the separation of 18 - 19 mers and 19 - 20 mers of PO-ODNs were 4.68 and 3.20, respectively; and the average resolutions for the separation of 18 - 19 mers and 19 - 20 mers of PS-ODNs were 1.23 and 0.81, respectively. The relative standard deviations of the migration time and the resolution were all less than 5%. This method will be useful for the qualification of PO-ODNs and PS-ODNs samples as they are used in antisense drug development due to the relatively easy operation and good reproducibility of the method in comparing with the capillary gel electrophoresis.</div>
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<Abstract><AbstractText>Oligodeoxynucleotides (ODNs) may possess biological activity in vivo, and are used for the cancer therapeusis. Synthesized ODNs contains many by-products, and so their purity check and resolution of single-base, i. e., the separation of ODNs differing by one nucleotide in length, become necessary. In this study, capillary zone electrophoresis (CZE) method was developed for the separation of two sets of model compounds of single-stranded oligodeoxynucleotide mixtures (18 - 20 mers), phosphodiester oligodeoxynucleotides (PO-ODNs) and their phosphorothioate modifications (PS-ODNs), with equal sequences differing in a single base. The effects of the CZE operating parameters on the separation were investigated and optimized to further improve the resolution, such as the pH values and the concentrations of running buffer, the varieties and concentrations of additives, the separation voltage as well as the temperature. It was confirmed that the pH value of the buffer played the most important role in the separation, and the urea used as the additive in the system improved significantly the resolution of PS-ODNs. Consequently, the PO-ODNs and PS-ODNs mixtures could be single-based separated on a fused-silica capillary of 50 microm x 49.0 cm (40.7 cm of effective length) under the optimum conditions: the running buffer system of 50 mmol/L NaH2PO4-H3PO4 (pH 2.24)-7 mol/L urea, the pressure injection of 2 kPa x 10 s, the separation voltage of -20 kV, the column temperature of 25 degrees C, and the ultraviolet (UV) detection at 260 nm. The average resolutions for the separation of 18 - 19 mers and 19 - 20 mers of PO-ODNs were 4.68 and 3.20, respectively; and the average resolutions for the separation of 18 - 19 mers and 19 - 20 mers of PS-ODNs were 1.23 and 0.81, respectively. The relative standard deviations of the migration time and the resolution were all less than 5%. This method will be useful for the qualification of PO-ODNs and PS-ODNs samples as they are used in antisense drug development due to the relatively easy operation and good reproducibility of the method in comparing with the capillary gel electrophoresis.</AbstractText>
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