Omega-1, a glycoprotein secreted by Schistosoma mansoni eggs, drives Th2 responses

Everts, B. et al. (2009) Omega-1, a glycoprotein secreted by Schistosoma mansoni eggs, drives Th2 responses. Journal of Experimental Medicine, 206(8), pp. 1673-1680. (doi: 10.1084/jem.20082460) (PMID:19635864) (PMCID:PMC2722183)

Abstract

Soluble egg antigens of the parasitic helminth Schistosoma mansoni (S. mansoni egg antigen [SEA]) induce strong Th2 responses both in vitro and in vivo. However, the specific molecules that prime the development of Th2 responses have not been identified. We report that omega-1, a glycoprotein which is secreted from S. mansoni eggs and present in SEA, is capable of conditioning human monocyte-derived dendritic cells in vitro to drive T helper 2 (Th2) polarization with similar characteristics as whole SEA. Furthermore, using IL-4 dual reporter mice, we show that both natural and recombinant omega-1 alone are sufficient to generate Th2 responses in vivo, even in the absence of IL-4R signaling. Finally, omega-1–depleted SEA displays an impaired capacity for Th2 priming in vitro, but not in vivo, suggesting the existence of additional factors within SEA that can compensate for the omega-1–mediated effects. Collectively, we identify omega-1, a single component of SEA, as a potent inducer of Th2 responses.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Perona-Wright, Dr Georgia
• Authors: Everts, B., Perona-Wright, G., Smits, H. H., Hokke, C. H., van der Ham, A. J., Fitzsimmons, C. M., Doenhoff, M. J., van der Bosch, J., Mohrs, K., Haas, H., Mohrs, M., Yazdanbakhsh, M., and Schramm, G.
• College/School: College of Medical Veterinary and Life Sciences > School of Infection & Immunity
• Journal Name: Journal of Experimental Medicine
• Publisher: Rockefeller University Press
• ISSN: 0022-1007
• ISSN (Online): 1540-9538
• Published Online: 27 July 2009
• Copyright Holders: Copyright © 2009 Everts et al.
• First Published: First published in Journal of Experimental Medicine 206(8):1673-1680
• Publisher Policy: Reproduced under a Creative Commons License