A validated assay to measure soluble IL-7 receptor shows minimal impact of IL-7 treatment.

Abstract:

:IL-7 is a crucial cytokine for T cell hematopoiesis and peripheral homeostasis which by signaling through its receptor alpha chain (CD127) is essential for inducing T cell proliferation and survival. Since the specific CD127 alpha chain is found in a soluble state (sCD127) and at a high level in plasma (ng/mL), it is important to develop a sensitive and reliable assay in order to investigate the potential role of this receptor in the regulation of IL-7 physiologic, physipathologic and therapeutic effects. We here report a fully validated method to measure sCD127 in human and simian plasma using a method based on ELISA MSD technology. We demonstrate that sCD127 is detectable at various levels in the plasma of healthy humans as well as in that of healthy Rhesus and Cynomolgus macaques (106.72, 205.26 and 366.95 ng/mL respectively). Moreover, as opposed to the sCD25/IL-2 tandem, we demonstrate that IL-7 treatment has no impact on sCD127 plasma concentration in patients infected by HIV.

journal_name

J Immunol Methods

authors

Janot-Sardet C,Assouline B,Cheynier R,Morre M,Beq S

doi

10.1016/j.jim.2009.12.003

subject

Has Abstract

pub_date

2010-02-28 00:00:00

pages

115-23

issue

1-2

eissn

0022-1759

issn

1872-7905

pii

S0022-1759(09)00375-5

journal_volume

353

pub_type

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