A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis

Walther W, Schmeer M, Kobelt D, Baier R, Harder A, Walhorn V, Anselmetti D, Aumann J, Fichtner I, Schleef M (2013)
Human gene therapy. Clinical development 24(4): 147-153.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Walther, Wolfgang; Schmeer, Marco; Kobelt, Dennis; Baier, Ruth; Harder, AlexanderUniBi; Walhorn, VolkerUniBi ; Anselmetti, DarioUniBi ; Aumann, Jutta; Fichtner, Iduna; Schleef, Martin
Abstract / Bemerkung
The great interest for naked plasmid DNA in gene therapy studies is reflected by the fact that it is currently used in 18% of all gene therapy trials. Therefore, validation of topology and functionality of DNA resulting from its long-term stability is an essential requirement for safe and effective gene transfer. To this aim, we analyzed the stability of good manufacturing practice-grade pCMVβ reporter plasmid DNA by capillary gel electrophoresis, agarose gel electrophoresis, and atomic force microscopy. The plasmid DNA was produced for a clinical gene transfer study started in 2005 and was stored for meanwhile 7 years under continuously monitored conditions at -20 °C. The stability of plasmid DNA was monitored by LacZ transgene expression functional assays performed in vitro and in vivo on the 7-year-old plasmid DNA samples compared with plasmid batches newly produced in similar experimental conditions and quality standards. The analyses revealed that during the overall storage time and conditions, the proportion of open circular and supercoiled or covalently closed circular forms is conserved without linearization or degradation of the plasmid. The in vitro transfection and the in vivo jet-injection of DNA showed unaltered functionality of the long-stored plasmid. In summary, the 7-year-old and the newly produced plasmid samples showed similar topology and expression performance. Therefore, our stable storage conditions are effective to preserve the integrity of the DNA to be used in clinical studies. This is an important prerequisite for the long-term performance of gene transfer materials used in trials of long duration as well as of the reference material used in standardization procedures and assays.
Erscheinungsjahr
2013
Zeitschriftentitel
Human gene therapy. Clinical development
Band
24
Ausgabe
4
Seite(n)
147-153
ISSN
2324-8637
eISSN
2324-8645
Page URI
https://pub.uni-bielefeld.de/record/2673157

Zitieren

Walther W, Schmeer M, Kobelt D, et al. A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis. Human gene therapy. Clinical development. 2013;24(4):147-153.
Walther, W., Schmeer, M., Kobelt, D., Baier, R., Harder, A., Walhorn, V., Anselmetti, D., et al. (2013). A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis. Human gene therapy. Clinical development, 24(4), 147-153. doi:10.1089/humc.2013.067
Walther, Wolfgang, Schmeer, Marco, Kobelt, Dennis, Baier, Ruth, Harder, Alexander, Walhorn, Volker, Anselmetti, Dario, Aumann, Jutta, Fichtner, Iduna, and Schleef, Martin. 2013. “A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis”. Human gene therapy. Clinical development 24 (4): 147-153.
Walther, W., Schmeer, M., Kobelt, D., Baier, R., Harder, A., Walhorn, V., Anselmetti, D., Aumann, J., Fichtner, I., and Schleef, M. (2013). A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis. Human gene therapy. Clinical development 24, 147-153.
Walther, W., et al., 2013. A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis. Human gene therapy. Clinical development, 24(4), p 147-153.
W. Walther, et al., “A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis”, Human gene therapy. Clinical development, vol. 24, 2013, pp. 147-153.
Walther, W., Schmeer, M., Kobelt, D., Baier, R., Harder, A., Walhorn, V., Anselmetti, D., Aumann, J., Fichtner, I., Schleef, M.: A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis. Human gene therapy. Clinical development. 24, 147-153 (2013).
Walther, Wolfgang, Schmeer, Marco, Kobelt, Dennis, Baier, Ruth, Harder, Alexander, Walhorn, Volker, Anselmetti, Dario, Aumann, Jutta, Fichtner, Iduna, and Schleef, Martin. “A seven-year storage report of good manufacturing practice-grade naked plasmid DNA: stability, topology, and in vitro/in vivo functional analysis”. Human gene therapy. Clinical development 24.4 (2013): 147-153.

3 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

Minicircle Versus Plasmid DNA Delivery by Receptor-Targeted Polyplexes.
Levacic AK, Morys S, Kempter S, Lächelt U, Wagner E., Hum Gene Ther 28(10), 2017
PMID: 28826232
Plasmid DNA Manufacturing for Indirect and Direct Clinical Applications.
Schmeer M, Buchholz T, Schleef M., Hum Gene Ther 28(10), 2017
PMID: 28826233
Solid-phase supported design of carriers for therapeutic nucleic acid delivery.
Krhac Levacic A, Morys S, Wagner E., Biosci Rep 37(5), 2017
PMID: 28963371

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