Abstract:
:The chemokine C receptor 7 (CCR7) is a G-protein-coupled heptahelical receptor (GPCR) that is expressed on a wide variety of cells including memory T cells, B cells, mature dendritic cells, and cancer cells. Activated by its ligands CCL19 or CCL21, CCR7 plays a major role in metastasis of cancer cells. Recent studies demonstrated the role of NF-κB and AP-1 transcription factors in addition to let-7 microRNA in CCR7 expression. Our ChIP assays further show the binding of Sp-1, Sp-3 and NFAT-1 transcription factors to their potential binding sites in the 1Kb promoter region with the later found to inhibit whilst Sp-1, and Sp-3 were found to stimulate CCR7 expression as demonstrated by transfection assays. On the other hand, in addition to the known let-7 regulation of CCR7, we found miR-21 to have a highly conserved target region in CCR7 3'UTR and to be significantly down-regulated during the course of dendritic cell maturation, allowing for high expression of CCR7.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Al Akoum C,Akl I,Rouas R,Fayyad-Kazan M,Falha L,Renno T,Burny A,Lewalle P,Fayyad-Kazan H,Badran Bdoi
10.1016/j.humimm.2015.03.010subject
Has Abstractpub_date
2015-05-01 00:00:00pages
307-17issue
5eissn
0198-8859issn
1879-1166pii
S0198-8859(15)00102-0journal_volume
76pub_type
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