Pleiotropic functions of the CXC-type chemokine CXCL14 in mammals
- PMID: 22437940
- DOI: 10.1093/jb/mvs030
Pleiotropic functions of the CXC-type chemokine CXCL14 in mammals
Abstract
CXCL14 is a member of the CXC chemokine family. CXCL14 possesses chemoattractive activity for activated macrophages, immature dendritic cells and natural killer cells. CXCL14-deficient mice do not exhibit clear immune system abnormalities, suggesting that the function of CXCL14 can be compensated for by other chemokines. However, CXCL14 does appear to have unique biological roles. It suppresses the in vivo growth of lung and head-and-neck carcinoma cells, whereas the invasiveness of breast and prostate cancer cells appears to be promoted by CXCL14. Moreover, recent evidence revealed that CXCL14 participates in glucose metabolism, feeding behaviour-associated neuronal circuits, and anti-microbial defense. Based on the expression patterns of CXCL14 and CXCL12 during embryonic development and in the perinatal brain in mice, the functions of these two chemokines may be opposite or interactive. Although CXCL14 receptors have not yet been identified, the intracellular activity of CXCL14 in breast cancer cells suggests that the CXCL14 receptor(s) and signal transduction pathway(s) may be different from those of conventional CXC-type chemokines.
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