Sökning: WFRF:(Lundberg Emma)
> (2006-2009) >
Affinity-based entr...
Affinity-based entrapment of the HER2 receptor in the endoplasmic reticulum using an affibody molecule
-
- Vernet, Erik (författare)
- KTH,Skolan för bioteknologi (BIO)
-
- Konrad, Anna (författare)
- KTH,Skolan för bioteknologi (BIO)
-
- Lundberg, Emma (författare)
- KTH,Skolan för bioteknologi (BIO)
-
visa fler...
-
- Nygren, Per-Åke (författare)
- KTH,Skolan för bioteknologi (BIO)
-
- Gräslund, Torbjörn (författare)
- KTH,Skolan för bioteknologi (BIO)
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2008
- 2008
- Engelska.
-
Ingår i: Journal of immunological methods. - : Elsevier BV. - 0022-1759. ; 338, s. 1-6
- Relaterad länk:
-
http://www.sciencedi...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Interference with the export of cell surface receptors can be performed through co-expression of specific affinity molecules designed for entrapment in the endoplasmic reticulum during the export process. We describe the investigation of a small (6 kDa) non-immunoglobulin-based HER2 receptor binding affibody molecule (ZHER2:00477), for use in affinity mediated entrapment of the HER2 receptor in the ER. Constructs encoding ZHER2:00477 or a control affibody protein, with or without ER-retention peptide extensions (KDEL), were expressed in the HER2 over-expressing cell line SKOV-3. Intracellular expression of the full-length affibody constructs could be confirmed by probing cell extracts by Western blotting. Confocal immunofluorescence microscopy experiments showed extensive co-localization of the HER2 receptor and ZHER2:00477-KDEL in the ER, whereas the use of a KDEL-extended control affibody molecule resulted in distinct and separate signals from cell surface-localized HER2 receptor and ER-localized affibody protein. This indicated a capability of the ZHER2:00477-KDEL fusion protein to functionally interfere with the export process of HER2 receptor in a specific manner. Using flow cytometry and cell proliferation analyses, it could be shown that expression of the ZHER2:00477-KDEL fusion construct in the SKOV-3 cell line resulted both in a marked reduction in cell surface level of HER2 receptors and that the cell population doubling time was significantly increased. Expression of the ZHER2:00477-KDEL fusion protein in additional cell lines of different origin and with different expression levels of endogenous HER2 receptor compared to SKOV-3, also resulted in depletion of the cell surface levels of HER2 receptor. This indicated upon a general ability of the ZHER2:00477-KDEL fusion protein to functionally interfere with the export process of HER2.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology (hsv//eng)
Nyckelord
- ErbB2; HER2; affibody molecule; endoplasmic reticulum; flow cytometry
- Bioengineering
- Bioteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas