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Title: Enhancing recombinant protein production in human cell lines with a constitutive transport element and mRNA export proteins.
Authors: Aihara, Yuki
Fujiwara, Naoko
Yamazaki, Tomohiro
Kambe, Taiho  kyouindb  KAKEN_id
Nagao, Masaya  kyouindb  KAKEN_id
Hirose, Yutaka
Masuda, Seiji  kyouindb  KAKEN_id
Author's alias: 増田, 誠司
Keywords: Constitutive transport element
mRNA export
mRNA processing factor
Issue Date: 20-May-2011
Publisher: Elsevier B.V.
Journal title: Journal of biotechnology
Volume: 153
Issue: 04-3
Start page: 86
End page: 91
Abstract: Recent research into mRNA maturation processes in the nucleus has identified a number of proteins involved in mRNA transcription, capping, splicing, end processing and export. Among them, the Tap-p15 heterodimer acts as an mRNA export receptor. Tap-p15 is recruited onto fully processed mRNA in the nucleus, which is ready for export to the cytoplasm, through associating with Aly or SR proteins on mRNA, or by directly associating with a constitutive transport element (CTE), an RNA element derived from type D retroviruses. mRNA containing a CTE is exported to the cytoplasm by directly associating with Tap-p15, even in the absence of Tap-recruiting proteins such as Aly or SR proteins on the mRNA. Here, we showed that the use of a CTE enhanced the expression of recombinant protein in human cell lines. The co-expression of reporter proteins and Tap-p15 also enhanced recombinant protein expression. Moreover, the use of a CTE and Tap-p15 synergistically further enhanced the recombinant protein expression. In addition to Tap-p15, several Tap-p15-recruiting proteins, including Aly and SR proteins, enhanced recombinant protein expression, albeit independently of the CTE. The incorporation of a CTE and Tap-p15-recruiting proteins into protein expression system is useful to increase recombinant protein yield in human cells.
Rights: © 2011 Elsevier B.V.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1016/j.jbiotec.2011.03.024
PubMed ID: 21473891
Appears in Collections:Journal Articles

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