PMID- 35215232 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230308 IS - 1424-8247 (Print) IS - 1424-8247 (Electronic) IS - 1424-8247 (Linking) VI - 15 IP - 2 DP - 2022 Jan 19 TI - First In Silico Screening of Insect Molecules for Identification of Novel Anti-Parasitic Compounds. LID - 10.3390/ph15020119 [doi] LID - 119 AB - Schistosomiasis is a neglected tropical disease caused by blood flukes of the genus Schistosoma. In silico screenings of compounds for the identification of novel anti-parasitic drug candidates have received considerable attention in recent years, including the screening of natural compounds. For the first time, we investigated molecules from insects, a rather neglected source in drug discovery, in an in silico screening approach to find novel antischistosomal compounds. Based on the Dictionary of Natural Products (DNP), we created a library of 1327 insect compounds suitable for molecular docking. A structure-based virtual screening against the crystal structure of a known druggable target in Schistosoma mansoni, the thioredoxin glutathione reductase (SmTGR), was performed. The top ten compounds predominantly originated from beetles and were predicted to interact particularly with amino acids in the doorstop pocket of SmTGR. For one compound from a jewel beetle, buprestin H, we tested and confirmed antischistosomal activity against adult and juvenile parasites in vitro. At concentrations with anti-parasitic activity, we could also exclude any unspecific cytotoxic activity against human HepG2 cells. This study highlights the potential of insect molecules for the identification of novel antischistosomal compounds. Our library of insect-derived molecules could serve not only as basis for future in silico screenings against additional target proteins of schistosomes, but also of other parasites. FAU - Gallinger, Tom L AU - Gallinger TL AUID- ORCID: 0000-0003-3001-481X AD - Department of Pharmaceutical Chemistry, Philipps University Marburg, 35032 Marburg, Germany. FAU - Aboagye, Samuel Y AU - Aboagye SY AUID- ORCID: 0000-0001-7702-982X AD - Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL 60612, USA. FAU - Obermann, Wiebke AU - Obermann W AD - Department of Pharmaceutical Chemistry, Philipps University Marburg, 35032 Marburg, Germany. FAU - Weiss, Michael AU - Weiss M AD - Bioorganic Chemistry, University of Bayreuth, 95440 Bayreuth, Germany. FAU - Grunweller, Arnold AU - Grunweller A AD - Department of Pharmaceutical Chemistry, Philipps University Marburg, 35032 Marburg, Germany. FAU - Unverzagt, Carlo AU - Unverzagt C AD - Bioorganic Chemistry, University of Bayreuth, 95440 Bayreuth, Germany. FAU - Williams, David L AU - Williams DL AD - Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL 60612, USA. FAU - Schlitzer, Martin AU - Schlitzer M AD - Department of Pharmaceutical Chemistry, Philipps University Marburg, 35032 Marburg, Germany. FAU - Haeberlein, Simone AU - Haeberlein S AD - Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany. LA - eng GR - R33 AI127635/AI/NIAID NIH HHS/United States GR - LOEWE Centre DRUID/Hessian Ministry for Science and the Arts/ GR - AI127635/National Institute of Allergy and Infectious Diseases/ PT - Journal Article DEP - 20220119 PL - Switzerland TA - Pharmaceuticals (Basel) JT - Pharmaceuticals (Basel, Switzerland) JID - 101238453 PMC - PMC8877563 OTO - NOTNLM OT - Schistosoma mansoni OT - in silico screening OT - insect compounds OT - molecular docking OT - thioredoxin glutathione reductase COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2022/02/27 06:00 MHDA- 2022/02/27 06:01 PMCR- 2022/01/19 CRDT- 2022/02/26 01:05 PHST- 2021/12/27 00:00 [received] PHST- 2022/01/16 00:00 [revised] PHST- 2022/01/17 00:00 [accepted] PHST- 2022/02/26 01:05 [entrez] PHST- 2022/02/27 06:00 [pubmed] PHST- 2022/02/27 06:01 [medline] PHST- 2022/01/19 00:00 [pmc-release] AID - ph15020119 [pii] AID - pharmaceuticals-15-00119 [pii] AID - 10.3390/ph15020119 [doi] PST - epublish SO - Pharmaceuticals (Basel). 2022 Jan 19;15(2):119. doi: 10.3390/ph15020119.