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Charles Surh
면역 미생물 공생 연구단
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IL-7/anti-IL-7 mAb complexes augment cytokine potency in mice through association with IgG-Fc and by competition with IL-7R.

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Title
IL-7/anti-IL-7 mAb complexes augment cytokine potency in mice through association with IgG-Fc and by competition with IL-7R.
Author(s)
Christopher E. Martin; Ester M. M. van Leeuwen; Se Jin Im; Derry C. Roopenian; Young-Chul Sung; Charles D. Surh
Publication Date
2013-05
Journal
BLOOD, v.121, no.22, pp.4484 - 4492
Publisher
NW SUITE 200
Abstract
Interleukin-7 (IL-7) is essential to T-cell survival as well as homeostatic proliferation, and clinical trials that exploit the mitogenic effects of IL-7 have achieved success in treating human diseases. In mice, the in vivo potency of IL-7 improves dramatically when it is administered as a complex with the anti–IL-7 neutralizingmonoclonal antibody clone M25. However, the mechanismwhereby M25 augments IL-7 potency is unknown. We have analyzed the discrete contributions of the antibody constant (Fc) and IL-7-binding (Fab) domains to the mechanism. By engaging the neonatal Fc receptor the Fc domain extends the in vivo lifespan of IL-7/M25 complexes and accounts for the majority of their activity. Unexpectedly, the IL-7–neutralizing Fab domain provides an additional, albeit smaller, contribution, possibly by serving as a cytokine depot. This study is the first to demonstrate that the neutralizing aspect of the monoclonal antibody is directly involved in enhancing the potency of a cytokine with a single form of receptor. Lessons fromthe mechanismof IL-7/M25 complexes informthe design of nextgeneration cytokine therapeutics. (Blood. 2013;121(22):4484-4492)
URI
https://pr.ibs.re.kr/handle/8788114/1346
ISSN
0006-4971
Appears in Collections:
Academy of Immunology and Microbiology(면역 미생물 공생 연구단) > Journal Papers (저널논문)
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