Selective CCL5/RANTES-induced mast cell migration through interactions with chemokine receptors CCR1 and CCR4.
Mast cells (MCs) accumulate at sites of allergic mucosal inflammation where they act as central effector and regulatory cells. Because chemokines are of vital importance in directing inflammatory leukocytes to the sites of inflammations, we have investigated the expression and function of CC-chemokine receptor (CCR) on human MCs. Two previously unrecognized MC-chemokine receptors, CCR1 and CCR4, could be identified on cord blood-derived MCs (CBMCs). CCR1 and CCR4 expressed on CBMCs exhibited a unique response profile. Of seven CCR1 and CCR4 agonists tested, only CCL5/RANTES act as an agonist inducing chemotaxis. The migration could be partially blocked by specific antibodies against CCR1 or CCR4, while a complete inhibition was achieved when both CCR1 and CCR4 were blocked. These results demonstrate that both CCR1 and CCR4 are functional receptors on human mast cells with capacity to mediate migration towards CCL5.
Juremalm
Mikael
M
Research Group on Mast Cell Biology, Department of Genetics and Pathology, The Rudbeck Laboratory, Uppsala University, SE-751 85 Uppsala, Sweden.
Olsson
Niclas
N
Nilsson
Gunnar
G
D002478:Cells, Cultured; D018946:Chemokine CCL5 / Q000494:pharmacology* / Q000502:physiology*; D002633:Chemotaxis / Q000187:drug effects / Q000502:physiology; D005312:Fetal Blood / Q000166:cytology / Q000502:physiology; D005434:Flow Cytometry; D005786:Gene Expression Regulation / Q000187:drug effects / Q000276:immunology; D006801:Humans; D007231:Infant, Newborn; D008407:Mast Cells / Q000276:immunology / Q000502:physiology*; D012333:RNA, Messenger / Q000235:genetics; D054389:Receptors, CCR1; D054398:Receptors, CCR4; D019707:Receptors, Chemokine / Q000235:genetics*; D014158:Transcription, Genetic
C515300:CCR1 protein, human; C515354:CCR4 protein, human; D018946:Chemokine CCL5; D012333:RNA, Messenger; D054389:Receptors, CCR1; D054398:Receptors, CCR4; D019707:Receptors, Chemokine