Chemokine & Receptors

Human ACKR3 mRNA encodes the human atypical chemokine receptor 3 (ACKR3) protein, a member of the G-protein coupled receptor family. ACKR3 is a typical chemokine receptor that controls chemokine levels and localization via high-affinity chemokine binding that is uncoupled from classic ligand-driven signal transduction cascades, resulting instead in chemokine sequestration, degradation, or transcytosis.

Human CCL1 mRNA encodes the human C-C motif chemokine ligand 1 (CCL1) protein, a member of the CC subfamily. CCL1 is secreted by activated T cells and displays chemotactic activity for monocytes but not for neutrophils.

Human CCL11 mRNA encodes the human C-C motif chemokine ligand 11 (CCL11) protein, a member of the CC subfamily. CCL11 is thought to be involved in eosinophilic inflammatory diseases such as atopic dermatitis, allergic rhinitis, asthma and parasitic infections.

Human CCL13 mRNA encodes the human C-C motif chemokine ligand 13 (CCL13) protein, a cytokine that displays chemotactic activity for monocytes, lymphocytes, basophils and eosinophils, but not neutrophils. CCL13 also plays a role in accumulation of leukocytes during inflammation and may be involved in the recruitment of monocytes into the arterial wall during artherosclerosis.

Human CCL14 mRNA encodes the human C-C motif chemokine ligand 14 (CCL14) protein, a cytokine that induces changes in intracellular calcium concentration and enzyme release in monocytes.

Human CCL15 mRNA encodes the human C-C motif chemokine ligand 15 (CCL15) protein, a chemotactic for T cells and monocytes, and acts through C-C chemokine receptor type 1 (CCR1).

Human CCL16 mRNA encodes the human C-C motif chemokine ligand 16 (CCL16) protein, a cytokine that displays chemotactic activity for lymphocytes and monocytes but not for neutrophils. CCL16 also shows a potent myelosuppressive activity and suppresses proliferation of myeloid progenitor cells.

Human CCL17 mRNA encodes the human C-C motif chemokine ligand 17 (CCL17) protein, a cytokine that displays chemotactic activity for T lymphocytes, but not monocytes or granulocytes. CCL17 plays important roles in T cell development in thymus as well as in trafficking and activation of mature T cells.

Human CCL18 mRNA encodes the human C-C motif chemokine ligand 18 (CCL18) protein, a cytokine that displays chemotactic activity for naive T cells, CD4+ and CD8+ T cells and nonactivated lymphocytes, but not for monocytes or granulocytes. CCL18 may play a role in both humoral and cell-mediated immunity responses.

Human CCL19 mRNA encodes the human C-C motif chemokine ligand 19 (CCL19) protein, a cytokine that may play a role in normal lymphocyte recirculation and homing. CCL19 also plays an important role in trafficking of T cells in thymus, and in T cell and B cell migration to secondary lymphoid organs.

Human CCL2 mRNA encodes the human C-C motif chemokine ligand 2 (CCL2) protein. CCL2 displays chemotactic activity for monocytes and basophils but not for neutrophils or eosinophils. It has been implicated in the pathogenesis of diseases characterized by monocytic infiltrates, like psoriasis, rheumatoid arthritis and atherosclerosis.

Human CCL20 mRNA encodes the human C-C motif chemokine ligand 20 (CCL20) protein that displays chemotactic activity for lymphocytes and can repress proliferation of myeloid progenitors.

Human CCL21 mRNA encodes the human C-C motif chemokine ligand 21 (CCL21) protein, a chemokine that can inhibit hemopoiesis and stimulate chemotaxis. CCL21 is chemotactic in vitro for thymocytes and activated T cells, but not for B cells, macrophages, or neutrophils. It may also play a role in mediating homing of lymphocytes to secondary lymphoid organs.

Human CCL22 mRNA encodes the human C-C motif chemokine ligand 22 (CCL22) protein, a cytokine that displays chemotactic activity for monocytes, dendritic cells, natural killer cells and for chronically activated T lymphocytes. CCL22 also displays a mild activity for primary activated T lymphocytes and has no chemoattractant activity for neutrophils, eosinophils and resting T lymphocytes.

Human CCL23 mRNA encodes the human C-C motif chemokine ligand 23 (CCL23) protein, a cytokine that displays chemotactic activity on resting T lymphocytes and monocytes, lower activity on neutrophils and no activity on activated T lymphocytes. CCL23 is also a strong suppressor of colony formation by a multipotential hematopoietic progenitor cell line.

Human CCL24 mRNA encodes the human C-C motif chemokine ligand 24 (CCL24) protein, a cytokine that displays chemotactic activity on resting T lymphocytes, a minimal activity on neutrophils, and is negative on monocytes and activated T lymphocytes. CCL24 also has antimicrobial activity, displaying an antibacterial effect on S. pneumoniae, S. aureus, Non-typeable H. influenzae, and P. aeruginosa.

Human CCL25 mRNA encodes the human C-C motif chemokine ligand 25 (CCL25) protein, a cytokine that displays chemotactic activity for dendritic cells, thymocytes, and activated macrophages but is inactive on peripheral blood lymphocytes and neutrophils.

Human CCL26 mRNA encodes the human C-C motif chemokine ligand 26 (CCL26) protein, a cytokine that displays chemotactic activity for normal peripheral blood eosinophils and basophils. CCL26 also has antimicrobial activity, displaying an antibacterial effect on S. pneumoniae, S. aureus, Non-typeable H. influenzae, and P. aeruginosa.

Human CCL27 mRNA encodes the human C-C motif chemokine ligand 27 (CCL27) protein, a chemotactic for skin-associated memory T lymphocytes. CCL27 also plays a role in mediating homing of lymphocytes to cutaneous sites. It specifically binds to chemokine receptor 10 (CCR10).

Human CCL28 mRNA encodes the human C-C motif chemokine ligand 28 (CCL28) protein, a cytokine that displays chemotactic activity for resting CD4 or CD8 T cells and eosinophils. CCL28 may play a role in the physiology of extracutaneous epithelial tissues, including diverse mucosal organs.