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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Characterization of a novel CC chemokine, HCC-4, whose expression is increased by interleukin-10.

We have identified and characterized a human beta (CC) chemokine, designated HCC-4, that is most closely related to HCC-1 and which demonstrates chemotactic activity for monocytes. Northern analysis of multiple tissue blots and of activated monocytes mRNA shows expression of a 500-bp mRNA. A 1,500-bp mRNA was highly expressed in monocytes activated 12 hours in the presence of interleukin-10 (IL-10) but was absent in monocytes activated for only 1 hour regardless of the presence or absence of IL-10. The upregulation of expression in the presence of IL-10 is in contrast to the downregulatory effects of IL-10 on expression of most other chemokines. Recombinant HCC-4 demonstrated chemotactic activity for human monocytes and THP-1 monocyte cells but not for resting lymphocytes or neutrophils. HCC-4 also induced a Ca2+ flux in THP-1 cells that was desensitized by prior exposure to RANTES. Taken together, these data indicate that HCC-4 is a novel chemokine whose expression is uniquely upregulated by IL-10.[1]


  1. Characterization of a novel CC chemokine, HCC-4, whose expression is increased by interleukin-10. Hedrick, J.A., Helms, A., Vicari, A., Zlotnik, A. Blood (1998) [Pubmed]
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