PMID- 29461034 OWN - NLM STAT- MEDLINE DCOM- 20190405 LR - 20190405 IS - 1554-8937 (Electronic) IS - 1554-8929 (Linking) VI - 13 IP - 4 DP - 2018 Apr 20 TI - Inhibition of HIV Fusion by Small Molecule Agonists through Efficacy-Engineering of CXCR4. PG - 881-886 LID - 10.1021/acschembio.8b00061 [doi] AB - CXC chemokine receptor 4 (CXCR4) is involved in multiple physiological and pathological processes, notably as a coreceptor for human immunodeficiency virus (HIV) cell entry. Its broad expression pattern and vital biological importance make CXCR4 a troublesome drug target, as disruption of the interaction with its endogenous ligand, CXC chemokine ligand 12 (CXCL12), has severe consequences. In fact, only one CXCR4 drug, the bicyclam antagonist and HIV entry inhibitor AMD3100 (Plerixafor/Mozobil), has been approved for clinical use, however only for stem cell mobilization-a consequence of CXCR4 antagonism. Here, we report the engineering of an efficacy switch mutation in CXCR4-F292A(7.43) in the middle of transmembrane helix 7-that converted the antagonists AMD3100 and AMD11070 into partial agonists. As agonists on F292A CXCR4, AMD3100 and AMD11070 were less disruptive to CXCR4 signaling while they remained efficient inhibitors of HIV fusion. This demonstrates that small molecule CXCR4 agonists can have a therapeutic potential as HIV entry inhibitors. FAU - Berg, Christian AU - Berg C AUID- ORCID: 0000-0002-0539-7081 AD - Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3B , 2200 Copenhagen N , Denmark. AD - Infectious Diseases Unit, Department of Medicine , Herlev-Gentofte Hospital , Herlev Ringvej 75 , 2730 Herlev , Denmark. FAU - Daugvilaite, Viktorija AU - Daugvilaite V AD - Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3B , 2200 Copenhagen N , Denmark. FAU - Steen, Anne AU - Steen A AD - Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3B , 2200 Copenhagen N , Denmark. FAU - Jorgensen, Astrid Sissel AU - Jorgensen AS AD - Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3B , 2200 Copenhagen N , Denmark. FAU - Vabeno, Jon AU - Vabeno J AD - Helgeland Hospital Trust , Prestmarkveien 1 , 8800 Sandnessjoen , Norway. FAU - Rosenkilde, Mette Marie AU - Rosenkilde MM AD - Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3B , 2200 Copenhagen N , Denmark. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180227 PL - United States TA - ACS Chem Biol JT - ACS chemical biology JID - 101282906 RN - 0 (Anti-HIV Agents) RN - 0 (CXCR4 protein, human) RN - 0 (HIV Fusion Inhibitors) RN - 0 (Receptors, CXCR4) SB - IM MH - Anti-HIV Agents MH - HIV Fusion Inhibitors/*chemistry MH - HIV-1/*drug effects MH - Humans MH - Protein Engineering/methods MH - Receptors, CXCR4/agonists/antagonists & inhibitors/*drug effects EDAT- 2018/02/21 06:00 MHDA- 2019/04/06 06:00 CRDT- 2018/02/21 06:00 PHST- 2018/02/21 06:00 [pubmed] PHST- 2019/04/06 06:00 [medline] PHST- 2018/02/21 06:00 [entrez] AID - 10.1021/acschembio.8b00061 [doi] PST - ppublish SO - ACS Chem Biol. 2018 Apr 20;13(4):881-886. doi: 10.1021/acschembio.8b00061. Epub 2018 Feb 27.