PMID- 28360196 OWN - NLM STAT- MEDLINE DCOM- 20170918 LR - 20220419 IS - 1530-6860 (Electronic) IS - 0892-6638 (Print) IS - 0892-6638 (Linking) VI - 31 IP - 7 DP - 2017 Jul TI - Epithelial chemokine CXCL14 synergizes with CXCL12 via allosteric modulation of CXCR4. PG - 3084-3097 LID - 10.1096/fj.201700013R [doi] AB - The chemokine receptor, CXC chemokine receptor 4 (CXCR4), is selective for CXC chemokine ligand 12 (CXCL12), is broadly expressed in blood and tissue cells, and is essential during embryogenesis and hematopoiesis. CXCL14 is a homeostatic chemokine with unknown receptor selectivity and preferential expression in peripheral tissues. Here, we demonstrate that CXCL14 synergized with CXCL12 in the induction of chemokine responses in primary human lymphoid cells and cell lines that express CXCR4. Combining subactive concentrations of CXCL12 with 100-300 nM CXCL14 resulted in chemotaxis responses that exceeded maximal responses that were obtained with CXCL12 alone. CXCL14 did not activate CXCR4-expressing cells (i.e., failed to trigger chemotaxis and Ca(2+) mobilization, as well as signaling via ERK1/2 and the small GTPase Rac1); however, CXCL14 bound to CXCR4 with high affinity, induced redistribution of cell-surface CXCR4, and enhanced HIV-1 infection by >3-fold. We postulate that CXCL14 is a positive allosteric modulator of CXCR4 that enhances the potency of CXCR4 ligands. Our findings provide new insights that will inform the development of novel therapeutics that target CXCR4 in a range of diseases, including cancer, autoimmunity, and HIV.-Collins, P. J., McCully, M. L., Martinez-Munoz, L., Santiago, C., Wheeldon, J., Caucheteux, S., Thelen, S., Cecchinato, V., Laufer, J. M., Purvanov, V., Monneau, Y. R., Lortat-Jacob, H., Legler, D. F., Uguccioni, M., Thelen, M., Piguet, V., Mellado, M., Moser, B. Epithelial chemokine CXCL14 synergizes with CXCL12 via allosteric modulation of CXCR4. CI - (c) The Author(s). FAU - Collins, Paul J AU - Collins PJ AD - Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom. FAU - McCully, Michelle L AU - McCully ML AD - Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom. FAU - Martinez-Munoz, Laura AU - Martinez-Munoz L AD - Department Immunology and Oncology, Centro Nacional de Biotecnologia/Consejo Superior de Investigaciones Cientificas, Madrid, Spain. FAU - Santiago, Cesar AU - Santiago C AD - Department Immunology and Oncology, Centro Nacional de Biotecnologia/Consejo Superior de Investigaciones Cientificas, Madrid, Spain. FAU - Wheeldon, James AU - Wheeldon J AD - Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom. FAU - Caucheteux, Stephan AU - Caucheteux S AD - Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom. FAU - Thelen, Sylvia AU - Thelen S AD - Institute for Research in Biomedicine, Universita della Svizzera Italiana, Bellinzona, Switzerland. FAU - Cecchinato, Valentina AU - Cecchinato V AD - Institute for Research in Biomedicine, Universita della Svizzera Italiana, Bellinzona, Switzerland. FAU - Laufer, Julia M AU - Laufer JM AD - Biotechnology Institute Thurgau at the University of Konstanz, Kreuzlingen, Switzerland. AD - Konstanz Research School Chemical Biology, University of Konstanz, Konstanz, Germany. FAU - Purvanov, Vladimir AU - Purvanov V AD - Biotechnology Institute Thurgau at the University of Konstanz, Kreuzlingen, Switzerland. AD - Konstanz Research School Chemical Biology, University of Konstanz, Konstanz, Germany. FAU - Monneau, Yoan R AU - Monneau YR AD - Institute de Biologie Structurale, Unite Mixtes de Recherche 5075, University Grenoble Alpes, Centre National de la Recherche Scientifique, Commissariat a l'Energie Atomique, Grenoble, France. FAU - Lortat-Jacob, Hugues AU - Lortat-Jacob H AD - Institute de Biologie Structurale, Unite Mixtes de Recherche 5075, University Grenoble Alpes, Centre National de la Recherche Scientifique, Commissariat a l'Energie Atomique, Grenoble, France. FAU - Legler, Daniel F AU - Legler DF AD - Biotechnology Institute Thurgau at the University of Konstanz, Kreuzlingen, Switzerland. AD - Konstanz Research School Chemical Biology, University of Konstanz, Konstanz, Germany. FAU - Uguccioni, Mariagrazia AU - Uguccioni M AD - Institute for Research in Biomedicine, Universita della Svizzera Italiana, Bellinzona, Switzerland. AD - Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy. FAU - Thelen, Marcus AU - Thelen M AD - Institute for Research in Biomedicine, Universita della Svizzera Italiana, Bellinzona, Switzerland. FAU - Piguet, Vincent AU - Piguet V AD - Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom. FAU - Mellado, Mario AU - Mellado M AD - Department Immunology and Oncology, Centro Nacional de Biotecnologia/Consejo Superior de Investigaciones Cientificas, Madrid, Spain. FAU - Moser, Bernhard AU - Moser B AD - Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom; moserb@cardiff.ac.uk. LA - eng GR - 169936/SNSF_/Swiss National Science Foundation/Switzerland GR - MR/L018284/1/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170330 PL - United States TA - FASEB J JT - FASEB journal : official publication of the Federation of American Societies for Experimental Biology JID - 8804484 RN - 0 (CXCL12 protein, human) RN - 0 (CXCL14 protein, human) RN - 0 (CXCR4 protein, human) RN - 0 (Chemokine CXCL12) RN - 0 (Chemokines, CXC) RN - 0 (RNA, Messenger) RN - 0 (Receptors, CXCR4) SB - IM MH - Amino Acid Sequence MH - Cells, Cultured MH - Chemokine CXCL12/genetics/*metabolism MH - Chemokines, CXC/genetics/*metabolism MH - Chemotaxis MH - Gene Expression Regulation/*physiology MH - HIV-1/physiology MH - Humans MH - Leukocytes, Mononuclear/*metabolism MH - Protein Binding MH - Protein Conformation MH - RNA, Messenger MH - Receptors, CXCR4/genetics/*metabolism MH - Signal Transduction PMC - PMC5472405 OTO - NOTNLM OT - CXCR4 OT - allosteric receptor modulation OT - signal transduction OT - synergism EDAT- 2017/04/01 06:00 MHDA- 2017/09/19 06:00 PMCR- 2017/03/30 CRDT- 2017/04/01 06:00 PHST- 2017/01/06 00:00 [received] PHST- 2017/03/13 00:00 [accepted] PHST- 2017/04/01 06:00 [pubmed] PHST- 2017/09/19 06:00 [medline] PHST- 2017/04/01 06:00 [entrez] PHST- 2017/03/30 00:00 [pmc-release] AID - fj.201700013R [pii] AID - FJ_201700013R [pii] AID - 10.1096/fj.201700013R [doi] PST - ppublish SO - FASEB J. 2017 Jul;31(7):3084-3097. doi: 10.1096/fj.201700013R. Epub 2017 Mar 30.