Plasmid DNA partitioning and separation using poly(ethylene glycol)/poly(acrylate)/salt aqueous two-phase systems.
(2012) In Journal of Chromatography A 1233. p.30-35- Abstract
- Phase diagrams of poly(ethylene glycol)/polyacrylate/Na(2)SO(4) systems have been investigated with respect to polymer size and pH. Plasmid DNA from Escherichia coli can depending on pH and polymer molecular weight be directed to a poly(ethylene glycol) or to a polyacrylate-rich phase in an aqueous two-phase system formed by these polymers. Bovine serum albumin (BSA) and E. coli homogenate proteins can be directed opposite to the plasmid partitioning in these systems. Two bioseparation processes have been developed where in the final step the pDNA is partitioned to a salt-rich phase giving a total process yield of 60-70%. In one of them the pDNA is partitioned between the polyacrylate and PEG-phases in order to remove proteins. In a more... (More)
- Phase diagrams of poly(ethylene glycol)/polyacrylate/Na(2)SO(4) systems have been investigated with respect to polymer size and pH. Plasmid DNA from Escherichia coli can depending on pH and polymer molecular weight be directed to a poly(ethylene glycol) or to a polyacrylate-rich phase in an aqueous two-phase system formed by these polymers. Bovine serum albumin (BSA) and E. coli homogenate proteins can be directed opposite to the plasmid partitioning in these systems. Two bioseparation processes have been developed where in the final step the pDNA is partitioned to a salt-rich phase giving a total process yield of 60-70%. In one of them the pDNA is partitioned between the polyacrylate and PEG-phases in order to remove proteins. In a more simplified process the plasmid is partitioned to a PEG-phase and back-extracted into a Na(2)SO(4)-rich phase. The novel polyacrylate/PEG system allows a strong change of the partitioning between the phases with relatively small changes in composition or pH. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2432229
- author
- Johansson, Hans-Olof LU ; Matos, Tiago LU ; Luz, Juliana S ; Feitosa, Eloi ; Oliveira, Carla C ; Pessoa, Adalberto ; Bülow, Leif LU and Tjerneld, Folke LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Chromatography A
- volume
- 1233
- pages
- 30 - 35
- publisher
- Elsevier
- external identifiers
-
- wos:000302663000005
- pmid:22391492
- scopus:84858622366
- pmid:22391492
- ISSN
- 0021-9673
- DOI
- 10.1016/j.chroma.2012.02.028
- language
- English
- LU publication?
- yes
- id
- 793e7e3d-a0e1-4d8a-9b34-32da3d3421c7 (old id 2432229)
- date added to LUP
- 2016-04-01 13:53:19
- date last changed
- 2022-01-27 21:38:19
@article{793e7e3d-a0e1-4d8a-9b34-32da3d3421c7, abstract = {{Phase diagrams of poly(ethylene glycol)/polyacrylate/Na(2)SO(4) systems have been investigated with respect to polymer size and pH. Plasmid DNA from Escherichia coli can depending on pH and polymer molecular weight be directed to a poly(ethylene glycol) or to a polyacrylate-rich phase in an aqueous two-phase system formed by these polymers. Bovine serum albumin (BSA) and E. coli homogenate proteins can be directed opposite to the plasmid partitioning in these systems. Two bioseparation processes have been developed where in the final step the pDNA is partitioned to a salt-rich phase giving a total process yield of 60-70%. In one of them the pDNA is partitioned between the polyacrylate and PEG-phases in order to remove proteins. In a more simplified process the plasmid is partitioned to a PEG-phase and back-extracted into a Na(2)SO(4)-rich phase. The novel polyacrylate/PEG system allows a strong change of the partitioning between the phases with relatively small changes in composition or pH.}}, author = {{Johansson, Hans-Olof and Matos, Tiago and Luz, Juliana S and Feitosa, Eloi and Oliveira, Carla C and Pessoa, Adalberto and Bülow, Leif and Tjerneld, Folke}}, issn = {{0021-9673}}, language = {{eng}}, pages = {{30--35}}, publisher = {{Elsevier}}, series = {{Journal of Chromatography A}}, title = {{Plasmid DNA partitioning and separation using poly(ethylene glycol)/poly(acrylate)/salt aqueous two-phase systems.}}, url = {{http://dx.doi.org/10.1016/j.chroma.2012.02.028}}, doi = {{10.1016/j.chroma.2012.02.028}}, volume = {{1233}}, year = {{2012}}, }