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A facile method for expression and purification of the Alzheimer's disease-associated amyloid beta-peptide

Walsh, Dominic M. ; Thulin, Eva LU ; Minogue, Aedin M. ; Gustavsson, Niklas LU ; Pang, Eric ; Teplow, David B. and Linse, Sara LU (2009) In The FEBS Journal 276(5). p.1266-1281
Abstract
We report the development of a high-level bacterial expression system for the Alzheimer's disease-associated amyloid beta-peptide (A beta), together with a scaleable and inexpensive purification procedure. A beta(1-40) and A beta(1-42) coding sequences together with added ATG codons were cloned directly into a Pet vector to facilitate production of Met-A beta(1-40) and Met-A beta(1-42), referred to as A beta(M1-40) and A beta(M1-42), respectively. The expression sequences were designed using codons preferred by Escherichia coli, and the two peptides were expressed in this host in inclusion bodies. Peptides were purified from inclusion bodies using a combination of anion-exchange chromatography and centrifugal filtration. The method... (More)
We report the development of a high-level bacterial expression system for the Alzheimer's disease-associated amyloid beta-peptide (A beta), together with a scaleable and inexpensive purification procedure. A beta(1-40) and A beta(1-42) coding sequences together with added ATG codons were cloned directly into a Pet vector to facilitate production of Met-A beta(1-40) and Met-A beta(1-42), referred to as A beta(M1-40) and A beta(M1-42), respectively. The expression sequences were designed using codons preferred by Escherichia coli, and the two peptides were expressed in this host in inclusion bodies. Peptides were purified from inclusion bodies using a combination of anion-exchange chromatography and centrifugal filtration. The method described requires little specialized equipment and provides a facile and inexpensive procedure for production of large amounts of very pure A beta peptides. Recombinant peptides generated using this protocol produced amyloid fibrils that were indistinguishable from those formed by chemically synthesized A beta 1-40 and A beta 1-42. Formation of fibrils by all peptides was concentration-dependent, and exhibited kinetics typical of a nucleation-dependent polymerization reaction. Recombinant and synthetic peptides exhibited a similar toxic effect on hippocampal neurons, with acute treatment causing inhibition of MTT reduction, and chronic treatment resulting in neuritic degeneration and cell loss. (Less)
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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
amyloid, aggregation, A beta, fibrillogenesis, Alzheimer's disease
in
The FEBS Journal
volume
276
issue
5
pages
1266 - 1281
publisher
Wiley-Blackwell
external identifiers
  • wos:000263451600011
  • scopus:60349100306
  • pmid:19175671
ISSN
1742-464X
DOI
10.1111/j.1742-4658.2008.06862.x
language
English
LU publication?
yes
id
1c7e328e-f80e-4d83-907c-066f73d6fbf8 (old id 1372222)
date added to LUP
2016-04-01 12:59:56
date last changed
2022-04-06 01:55:25
@article{1c7e328e-f80e-4d83-907c-066f73d6fbf8,
  abstract     = {{We report the development of a high-level bacterial expression system for the Alzheimer's disease-associated amyloid beta-peptide (A beta), together with a scaleable and inexpensive purification procedure. A beta(1-40) and A beta(1-42) coding sequences together with added ATG codons were cloned directly into a Pet vector to facilitate production of Met-A beta(1-40) and Met-A beta(1-42), referred to as A beta(M1-40) and A beta(M1-42), respectively. The expression sequences were designed using codons preferred by Escherichia coli, and the two peptides were expressed in this host in inclusion bodies. Peptides were purified from inclusion bodies using a combination of anion-exchange chromatography and centrifugal filtration. The method described requires little specialized equipment and provides a facile and inexpensive procedure for production of large amounts of very pure A beta peptides. Recombinant peptides generated using this protocol produced amyloid fibrils that were indistinguishable from those formed by chemically synthesized A beta 1-40 and A beta 1-42. Formation of fibrils by all peptides was concentration-dependent, and exhibited kinetics typical of a nucleation-dependent polymerization reaction. Recombinant and synthetic peptides exhibited a similar toxic effect on hippocampal neurons, with acute treatment causing inhibition of MTT reduction, and chronic treatment resulting in neuritic degeneration and cell loss.}},
  author       = {{Walsh, Dominic M. and Thulin, Eva and Minogue, Aedin M. and Gustavsson, Niklas and Pang, Eric and Teplow, David B. and Linse, Sara}},
  issn         = {{1742-464X}},
  keywords     = {{amyloid; aggregation; A beta; fibrillogenesis; Alzheimer's disease}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1266--1281}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{The FEBS Journal}},
  title        = {{A facile method for expression and purification of the Alzheimer's disease-associated amyloid beta-peptide}},
  url          = {{http://dx.doi.org/10.1111/j.1742-4658.2008.06862.x}},
  doi          = {{10.1111/j.1742-4658.2008.06862.x}},
  volume       = {{276}},
  year         = {{2009}},
}