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CXCL14

Hemokin (C-X-C motiv) ligand 14
Identifikatori
SimbolCXCL14
Alt. simboliSCYB14, BRAK, NJAC, bolekine, Kec, MIP-2g, BMAC, KS1
Entrez9547
HUGO10640
OMIM604186
PDB2HDL
RefSeqNM_004887
UniProtO95715
Ostali podaci
LokusHromozom 5 q31

CXCL14, hemokin (C-X-C motif) ligand 14, je mali citokin iz CXC hemokin familije koji je takođe poznat kao BRAK (engl. breast and kidney-expressed chemokine - hemokin izražen u grudima i bubrezima).[1] Kompletno formiran CXCL14 sadrži mnoge konzervirane osobine CXC hemokin potfamilije ali postoje i razlike, kao što su kraći N-terminus i pet dodatnih aminokiselina u regionu između njegovog tređeg i četvrtog cisteina.[1] CXCL14 je konstitutivno izražen u visokim koncentracijama u mnogim normalnim tkivima, gde su njegov ćelijski izvor fibroblasti.[2] Međutim, njegovo expresija je redukovana ili odsutna iz većine ćelija raka.[1][3] Ovaj hemokin je hemoatraktant za monocite i može da aktivira te ćelije u prisustvu inflamatornih medijatora prostaglandin-E2 (PGE2).[2] Ovo je takođe potentan hemoatraktant i aktivator dendritskih ćelija. On je impliciran u vraćanje tih ćelija,[4] i on može da stimuliše migraciju aktiviranih NK ćelija.[5] CXCL14 takođe inhibira angiogenezu. Moguće je da je to posledica njegove sposobnosti da blokira hemotaksu endotelijalnih ćelija.[6] Gen za CXCL14 se sastoji od četiri eksona i lociran je na hromozomu 5 kod čoveka.[1][7]

  1. ^ а б в г Hromas, R.; Broxmeyer, H. E.; Kim, C.; Nakshatri, H.; Christopherson, K., II; Azam, M.; Hou, Y.-H. (1999). „Cloning of BRAK, a novel divergent CXC chemokine preferentially expressed in normal versus malignant cells”. Biochem. Biophys. Res. Commun. 255: 703—706. PMID 10049774. 
  2. ^ а б Kurth, I.; Willimann, K.; Schaerli, P.; Hunziker, T.; Clark-Lewis, I.; Moser, B. (2001). „Monocyte selectivity and tissue localization suggests a role for breast and kidney-expressed chemokine (BRAK) in macrophage development.”. J. Exp. Med. 194: 855—861. PMID 11561000. 
  3. ^ Frederick, M. J.; Henderson, Y.; Xu, X.; Deavers, M. T.; Sahin, A. A.; Wu, H.; Lewis, D. E.; El-Naggar, A. K.; Clayman, G. L. (2000). „In vivo expression of the novel CXC chemokine BRAK in normal and cancerous human tissue.”. Am. J. Path. 156: 1937—1950. PMID 10854217. 
  4. ^ Shurin, G. V.; Ferris, R.; Tourkova, I. L.; Perez, L.; Lokshin, A.; Balkir, L.; Collins, B.; Chatta, G. S.; Shurin, M. R. (2005). „Loss of new chemokine CXCL14 in tumor tissue is associated with low infiltration by dendritic cells (DC), while restoration of human CXCL14 expression in tumor cells causes attraction of DC both in vitro and in vivo.”. J. Immun. 174: 5490—5498. PMID 15843547. 
  5. ^ Starnes T, Rasila KK, Robertson MJ, Brahmi Z, Dahl R, Christopherson K, Hromas R (2006). „The chemokine CXCL14 (BRAK) stimulates activated NK cell migration: implications for the downregulation of CXCL14 in malignancy.”. Exp Hematol. 34 (8): 1101—5. PMID 16863917. 
  6. ^ Shellenberger TD, Wang M, Gujrati M, Jayakumar A, Strieter RM, Burdick MD, Ioannides CG, Efferson CL, El-Naggar AK, Roberts D, Clayman GL, Frederick MJ (2004). „BRAK/CXCL14 is a potent inhibitor of angiogenesis and a chemotactic factor for immature dendritic cells.”. Cancer Res. 64 (22): 8262—70. PMID 15548693. 
  7. ^ Mire-Sluis, Anthony R.; Thorpe, Robin, ур. (1998). Cytokines (Handbook of Immunopharmacology). Boston: Academic Press. ISBN 0-12-498340-5. 
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CXCL14
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