PMID- 31362921 OWN - NLM STAT- MEDLINE DCOM- 20201015 LR - 20231213 IS - 1464-3405 (Electronic) IS - 0960-894X (Linking) VI - 29 IP - 18 DP - 2019 Sep 15 TI - A fragment-like approach to PYCR1 inhibition. PG - 2626-2631 LID - S0960-894X(19)30503-7 [pii] LID - 10.1016/j.bmcl.2019.07.047 [doi] AB - Pyrroline-5-carboxylate reductase 1 (PYCR1) is the final enzyme involved in the biosynthesis of proline and has been found to be upregulated in various forms of cancer. Due to the role of proline in maintaining the redox balance of cells and preventing apoptosis, PYCR1 is emerging as an attractive oncology target. Previous PYCR1 knockout studies led to a reduction in tumor growth. Accordingly, a small molecule inhibitor of PYCR1 could lead to new treatments for cancer, and a focused screening effort identified pargyline as a fragment-like hit. We report the design and synthesis of the first tool compounds as PYCR1 inhibitors, derived from pargyline, which were assayed to assess their ability to attenuate the production of proline. Structural activity studies have revealed the key determinants of activity, with the most potent compound (4) showing improved activity in vitro in enzyme (IC(50) = 8.8 microM) and pathway relevant effects in cell-based assays. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Milne, Kirsty AU - Milne K AD - Department of Pure and Applied Chemistry, Thomas Graham Building, University of Strathclyde, Glasgow G1 1XL, United Kingdom. FAU - Sun, Jianhui AU - Sun J AD - H5 Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, 121 Plesmanlaan, 1066 CX Amsterdam, The Netherlands. FAU - Zaal, Esther A AU - Zaal EA AD - Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands. FAU - Mowat, Jenna AU - Mowat J AD - Department of Pure and Applied Chemistry, Thomas Graham Building, University of Strathclyde, Glasgow G1 1XL, United Kingdom. FAU - Celie, Patrick H N AU - Celie PHN AD - H5 Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, 121 Plesmanlaan, 1066 CX Amsterdam, The Netherlands; NKI Protein Facility, Division of Biochemistry, The Netherlands Cancer Institute, 121 Plesmanlaan, 1066 CX Amsterdam, The Netherlands. FAU - Fish, Alexander AU - Fish A AD - H5 Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, 121 Plesmanlaan, 1066 CX Amsterdam, The Netherlands; NKI Protein Facility, Division of Biochemistry, The Netherlands Cancer Institute, 121 Plesmanlaan, 1066 CX Amsterdam, The Netherlands. FAU - Berkers, Celia R AU - Berkers CR AD - Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands; Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, The Netherlands. FAU - Forlani, Giuseppe AU - Forlani G AD - Department of Life Science and Biotechnology, University of Ferrara, 44121 Ferrara, Italy. FAU - Loayza-Puch, Fabricio AU - Loayza-Puch F AD - H5 Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, 121 Plesmanlaan, 1066 CX Amsterdam, The Netherlands. Electronic address: f.loayza-puch@dkfz-heidelberg.de. FAU - Jamieson, Craig AU - Jamieson C AD - Department of Pure and Applied Chemistry, Thomas Graham Building, University of Strathclyde, Glasgow G1 1XL, United Kingdom. Electronic address: craig.jamieson@strath.ac.uk. FAU - Agami, Reuven AU - Agami R AD - H5 Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, 121 Plesmanlaan, 1066 CX Amsterdam, The Netherlands; Department of Molecular Genetics, Erasmus MC, Rotterdam University, The Netherlands. Electronic address: r.agami@nki.nl. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190725 PL - England TA - Bioorg Med Chem Lett JT - Bioorganic & medicinal chemistry letters JID - 9107377 RN - 0 (Antineoplastic Agents) RN - 0 (Enzyme Inhibitors) RN - 0 (Small Molecule Libraries) RN - 9MV14S8G3E (Pargyline) RN - EC 1.5.1.- (Pyrroline Carboxylate Reductases) SB - IM MH - Antineoplastic Agents/chemical synthesis/chemistry/*pharmacology MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Dose-Response Relationship, Drug MH - Drug Screening Assays, Antitumor MH - Enzyme Inhibitors/chemical synthesis/chemistry/*pharmacology MH - Humans MH - Molecular Structure MH - Pargyline/chemical synthesis/chemistry/*pharmacology MH - Pyrroline Carboxylate Reductases/*antagonists & inhibitors/metabolism MH - Small Molecule Libraries/chemical synthesis/chemistry/*pharmacology MH - Structure-Activity Relationship MH - delta-1-Pyrroline-5-Carboxylate Reductase OTO - NOTNLM OT - Fragment-based drug discovery OT - Inhibitor OT - Oncology OT - Proline modulation OT - Tool compound EDAT- 2019/08/01 06:00 MHDA- 2020/10/21 06:00 CRDT- 2019/08/01 06:00 PHST- 2019/06/19 00:00 [received] PHST- 2019/07/23 00:00 [revised] PHST- 2019/07/24 00:00 [accepted] PHST- 2019/08/01 06:00 [pubmed] PHST- 2020/10/21 06:00 [medline] PHST- 2019/08/01 06:00 [entrez] AID - S0960-894X(19)30503-7 [pii] AID - 10.1016/j.bmcl.2019.07.047 [doi] PST - ppublish SO - Bioorg Med Chem Lett. 2019 Sep 15;29(18):2626-2631. doi: 10.1016/j.bmcl.2019.07.047. Epub 2019 Jul 25.