Freshly isolated primary NK cells were found to express CXCR1, CXCR3, and CXCR4, and to contain subsets expressing CCR1, CCR4, CCR5, CCR6, CCR7, CCR9, CXCR5, and CXCR6.
Where is CCR7 found?
lymphoid tissues
CCR7 Chemokine Receptor CCR7 is expressed in various lymphoid tissues including B and T lymphocytes and mature dendritic cells (DC).
Are NK cells found in lymph nodes?
NK cells are present, albeit at a very low frequency (0.2–0.4%), in the lymph nodes (LNs) of unimmunized animals, and studies have shown that activated NK cells can enter LN draining sites of immunization or infection, where they influence adaptive immune cell differentiation (8, 9, 10).
Are NK cells CD5 positive?
Human NK cells do not usually express CD5 antigen, but we found a novel subset of CD5LOW (low density of CD5) positive (CD5LOW+) natural killer cells (NK cells) in patients with multiple myeloma (MM) and plasmacytoma.
Why is CCR7 important?
CCR7 was described initially as a potent leukocyte chemotactic receptor that was later shown to be responsible of directing the migration of dendritic cells (DCs) to the lymph nodes where these cells play an important role in the initiation of the immune response.
Are NK cells in the spleen?
NK cells are found in most organs, including bone marrow, spleen, lymph nodes, liver, lung and uterus [3], [4]. The tissue distribution of NK cells in vivo may impact their local role in immune responses.
What are CD5 cells?
CD5 is a cluster of differentiation expressed on the surface of T cells (various species) and in a subset of murine B cells known as B-1a. CD5 includes a scavenger receptor cysteine-rich protein domain. T cells express higher levels of CD5 than B cells. CD5 is upregulated on T cells upon strong activation.
What does CCR7 stand for?
C-C chemokine receptor type 7
C-C chemokine receptor type 7 is a protein that in humans is encoded by the CCR7 gene. Two ligands have been identified for this receptor: the chemokines (C-C motif) ligand 19 (CCL19/ELC) and (C-C motif) ligand 21 (CCL21). CCR7 has also recently been designated CD197 (cluster of differentiation 197).
What expresses CCR7?
CCR7, an orphan receptor formerly known as EBI1 (EBV-induced gene 1),1 is the chemokine receptor for CCL19/ELC/MIP-3 beta and CCL21/SLC/6Ckine. It is expressed on T cells and dendritic cells (DC), consistent with the chemotactic action of CCL19 and CCL21 for both lymphocytes and mature DC.
