Sci. STKE, 18 July 2000
Virology Chemokine Scavenger
Viruses have evolved various methods for evading the immune system. van Berkel et al. describe a secreted protein, M3, of the murine herpes virus (HVS) that acts as a high affinity, selective chemokine scavenger. Chemokines, which consist of four families (CC, CXC, C, and CX3C), are secreted proteins that serve as immune system modulators and chemoattractants. Both bacterially produced M3 and M3 secreted into the medium by infected cells bound several CC- and CXC-type chemokines, as well as lymphotactin (C) and fractalkine (CX3C) chemokines, with nanomolar affinity. Furthermore, M3 blocked calcium fluxes stimulated by human chemokines in transfected cells, macrophages, and neutrophils. Thus, M3 might be used therapeutically to block cytokine signaling.
van Berkel, V., Barrett, J., Tiffany, H.L., Fremont, D.H., Murphy, P.M., McFadden, G., Speck, S.H., and Virgin, H.W., IV. (2000) Identification of a gammaherpesvirus selective chemokine binding protein that inhibits chemokine action. J. Virol. 74: 6741-6747. [Abstract] [Full Text]
Citation: Chemokine Scavenger. Sci. STKE 2000, tw7 (2000).
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