Please use this identifier to cite or link to this item: https://doi.org/10.1007/s10059-009-0078-z
Title: Identification of HUGT1 as a potential BiP activator and a cellular target for improvement of recombinant protein production using a cDNA screening system
Authors: Ku, S.C.Y.
Lwa, T.R.
Giam, M.
Yap, M.G.S. 
Chao, S.-H.
Keywords: HEK293
HUGT1
Monoclonal antibody
Recombinant protein production
Unfolded protein response
Issue Date: 2009
Source: Ku, S.C.Y., Lwa, T.R., Giam, M., Yap, M.G.S., Chao, S.-H. (2009). Identification of HUGT1 as a potential BiP activator and a cellular target for improvement of recombinant protein production using a cDNA screening system. Molecules and Cells 27 (5) : 577-582. ScholarBank@NUS Repository. https://doi.org/10.1007/s10059-009-0078-z
Abstract: The development of a high-throughput functional genomic screening provides a novel and expeditious approach in identifying critical genes involved in specific biological processes. Here we describe a cell-based cDNA screening system to identify the transcription activators of BiP, an endoplasmic reticulum (ER) chaperone protein. BiP promoter contains the ER stress element which is commonly present in the genes involved in unfolded protein response (UPR) that regulates protein secretion in cells. Therefore, the positive regulators of BiP may also be utilized to improve the recombinant protein production through modulation of UPR. Four BiP activators, including human UDP-glucose:glycoprotein glucosyltransferase 1 (HUGT1), are identified by the cDNA screening. Overexpression of HUGT1 leads to a significant increase in the production of recombinant erythropoietin, interferon β, and monoclonal antibody in HEK293 cells. Our results demonstrate that the cDNA screening for BiP activators may be effective to identify the novel BiP regulators and HUGT1 may serve as an ideal target gene for improving the recombinant protein production in mammalian cells. © The Korean Society for Molecular and Cellular Biology and Springer Netherlands 2009.
Source Title: Molecules and Cells
URI: http://scholarbank.nus.edu.sg/handle/10635/64051
ISSN: 10168478
DOI: 10.1007/s10059-009-0078-z
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