PMID- 28399435 OWN - NLM STAT- MEDLINE DCOM- 20170717 LR - 20231213 IS - 1096-0341 (Electronic) IS - 0042-6822 (Print) IS - 0042-6822 (Linking) VI - 507 DP - 2017 Jul TI - Inhibition of CRM1-mediated nuclear export of influenza A nucleoprotein and nuclear export protein as a novel target for antiviral drug development. PG - 32-39 LID - S0042-6822(17)30102-2 [pii] LID - 10.1016/j.virol.2017.04.001 [doi] AB - An anti-influenza compound, DP2392-E10 based on inhibition of the nuclear export function of the viral nucleoprotein-nuclear export signal 3 (NP-NES3) domain was successfully identified by our previous high-throughput screening system. Here, we demonstrated that DP2392-E10 exerts its antiviral effect by inhibiting replication of a broad range of influenza A subtypes. In regard to the molecular mechanism, we revealed that DP2392-E10 inhibits nuclear export of both viral NP and nuclear export protein (NEP). More specifically, in vitro pull-down assays revealed that DP2392-E10 directly binds cellular CRM1, which mediates nuclear export of NP and NEP. In silico docking suggested that DP2392-E10 binds at a region close to the HEAT9 and HEAT10 domains of CRM1. Together, these results indicate that the CRM1-mediated nuclear export function of influenza virus represents a new potential target for antiviral drug development, and also provide a core structure for a novel class of inhibitors that target this function. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Chutiwitoonchai, Nopporn AU - Chutiwitoonchai N AD - Viral Infectious Disease Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. FAU - Mano, Takafumi AU - Mano T AD - Viral Infectious Disease Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. FAU - Kakisaka, Michinori AU - Kakisaka M AD - Viral Infectious Disease Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. FAU - Sato, Hirotaka AU - Sato H AD - Viral Infectious Disease Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. FAU - Kondoh, Yasumitsu AU - Kondoh Y AD - Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. FAU - Osada, Hiroyuki AU - Osada H AD - Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. FAU - Kotani, Osamu AU - Kotani O AD - Laboratory of Viral Genomics, Pathogen Genomics Center, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan. FAU - Yokoyama, Masaru AU - Yokoyama M AD - Laboratory of Viral Genomics, Pathogen Genomics Center, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan. FAU - Sato, Hironori AU - Sato H AD - Laboratory of Viral Genomics, Pathogen Genomics Center, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan. FAU - Aida, Yoko AU - Aida Y AD - Viral Infectious Disease Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. Electronic address: aida@riken.jp. LA - eng GR - U58 DP002392/DP/NCCDPHP CDC HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170408 PL - United States TA - Virology JT - Virology JID - 0110674 RN - 0 (Antiviral Agents) RN - 0 (Karyopherins) RN - 0 (Nucleoproteins) RN - 0 (Receptors, Cytoplasmic and Nuclear) SB - IM MH - Active Transport, Cell Nucleus/drug effects MH - Antiviral Agents/pharmacology MH - Cell Line MH - Cell Nucleus/metabolism/virology MH - Humans MH - Influenza A virus/genetics/*metabolism MH - Influenza, Human/*metabolism/virology MH - Karyopherins/antagonists & inhibitors/genetics/*metabolism MH - Nucleoproteins/genetics/*metabolism MH - Receptors, Cytoplasmic and Nuclear/antagonists & inhibitors/genetics/*metabolism MH - Exportin 1 Protein PMC - PMC7111614 OTO - NOTNLM OT - Chromosome region maintenance 1 OT - Influenza A virus OT - Nuclear export protein OT - Nuclear export signal OT - Nucleoprotein EDAT- 2017/04/12 06:00 MHDA- 2017/07/18 06:00 PMCR- 2017/04/08 CRDT- 2017/04/12 06:00 PHST- 2016/11/30 00:00 [received] PHST- 2017/03/31 00:00 [revised] PHST- 2017/04/03 00:00 [accepted] PHST- 2017/04/12 06:00 [pubmed] PHST- 2017/07/18 06:00 [medline] PHST- 2017/04/12 06:00 [entrez] PHST- 2017/04/08 00:00 [pmc-release] AID - S0042-6822(17)30102-2 [pii] AID - 10.1016/j.virol.2017.04.001 [doi] PST - ppublish SO - Virology. 2017 Jul;507:32-39. doi: 10.1016/j.virol.2017.04.001. Epub 2017 Apr 8.