Is CD137 Ligand (CD137L) Signaling a Fine Tuner of Immune Responses?

Immune Netw

School of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea.

Published: June 2015

Now, it has been being accepted that reverse signaling through CD137 ligand (CD137L) plays an important role in vivo during hematopoiesis and in immune regulation. However, due to technical difficulty in dissecting both directional signaling events simultaneously in vivo, most biological activities caused by CD137-CD137L interactions are considered as results from signaling events of the CD137 receptor. To make the story more complex, CD137(-/-) and CD137L(-/-) mice have increased or decreased immune responses in a context-dependent manner. In this Mini review, I will try to provide a plausible explanation for how CD137L signaling is controlled during immune responses.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4486774PMC
http://dx.doi.org/10.4110/in.2015.15.3.121DOI Listing

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