NDLI: Recombinant p35 from Bacteria Can Form Interleukin (IL-)12, but Not IL-35

Content Provider	PubMed Central
Author	Aparicio-siegmund, Samadhi Moll, Jens M. Lokau, Juliane Melanie, Grusdat Schröder, Jutta Plöhn, Svenja Stefan, Rose-john Joachim, Grötzinger Lang, Philipp A. Scheller, Jürgen Garbers, Christoph
Editor	Moser, Muriel
Copyright Year	2014
Abstract	The Interleukin (IL)-12 family contains several heterodimeric composite cytokines which share subunits among each other. IL-12 consists of the subunits p40 (shared with IL-23) and p35. p35 is shared with the composite cytokine IL-35 which comprises of the p35/EBI3 heterodimer (EBI3 shared with IL-27). IL-35 signals via homo- or heterodimers of IL-12Rβ2, gp130 and WSX-1, which are shared with IL-12 and IL-27 receptor complexes, respectively. p35 was efficiently secreted in complex with p40 as IL-12 but not with EBI3 as IL-35 in several transfected cell lines tested which complicates the analysis of IL-35 signal transduction. p35 and p40 but not p35 and EBI3 form an inter-chain disulfide bridge. Mutation of the responsible cysteine residue (p40C197A) reduced IL-12 formation and activity only slightly. Importantly, the p40C197A mutation prevented the formation of antagonistic p40 homodimers which enabled the in vitro reconstitution of biologically active IL-12 with p35 produced in bacteria (p35bac). Reconstitution of IL-35 with p35bac and EBI3 did, however, fail to induce signal transduction in Ba/F3 cells expressing IL-12Rβ2 and gp130. In summary, we describe the in vitro reconstitution of IL-12, but fail to produce recombinant IL-35 by this novel approach.
Related Links	http://dx.doi.org/10.1371/journal.pone.0107990
Starting Page	107990
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	9
Volume Number	9
Language	English
Publisher	Public Library of Science
Publisher Date	2014-09-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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