PMID- 30332612 OWN - NLM STAT- MEDLINE DCOM- 20181226 LR - 20211204 IS - 1872-7786 (Electronic) IS - 0009-2797 (Linking) VI - 296 DP - 2018 Dec 25 TI - Taurine attenuates OTA-promoted PCV2 replication through blocking ROS-dependent autophagy via inhibiting AMPK/mTOR signaling pathway. PG - 220-228 LID - S0009-2797(18)30988-8 [pii] LID - 10.1016/j.cbi.2018.10.005 [doi] AB - Previous research found that ochratoxin A (OTA) could promote PCV2 replication by inducing autophagy. The aim of this study is to evaluate the effect of dietary amino acid derivative taurine on OTA-promoted PCV2 replication and explore the underlying mechanism. The results showed that taurine could inhibit OTA-promoted PCV2 replication in PK-15 cells. The effect of taurine could be mediated by its ability to attenuate ROS level and block OTA-promoted autophagy. Indeed, induction of autophagy by rapamycin could suppress the inhibitory effect of taurine on OTA-promoted PCV2 replication. Furthermore, taurine supplementation inhibited 5'AMP-activated protein kinase (AMPK) and activated mammalian target of rapamycin (mTOR). Activation of AMPK by acadesine (AICAR) could suppress the effect of taurine. In conclusion, taurine treatment suppresses autophagy by regulating the ROS/AMPK/mTOR signaling axis, thereby inhibiting OTA-promoted PCV2 replication. These findings provide the rationale for the use of taurine as an intervention against PCV2 infection. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Zhai, Nianhui AU - Zhai N AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China; Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China. FAU - Wang, Hong AU - Wang H AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China; Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China. FAU - Chen, Ying AU - Chen Y AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China; Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China. FAU - Li, Hu AU - Li H AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China; Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China. FAU - Viktor, Korolchuk AU - Viktor K AD - Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK. FAU - Huang, Kehe AU - Huang K AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China; Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China. FAU - Chen, Xingxiang AU - Chen X AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China; Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China. Electronic address: cxx@njau.edu.cn. LA - eng PT - Journal Article DEP - 20181014 PL - Ireland TA - Chem Biol Interact JT - Chemico-biological interactions JID - 0227276 RN - 0 (Ochratoxins) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Reactive Oxygen Species) RN - 1779SX6LUY (ochratoxin A) RN - 1EQV5MLY3D (Taurine) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) SB - IM MH - AMP-Activated Protein Kinases/*metabolism MH - Animals MH - Autophagy/*drug effects MH - Cells, Cultured MH - Circovirus/*drug effects/growth & development MH - Dose-Response Relationship, Drug MH - Ochratoxins/*antagonists & inhibitors/pharmacology MH - Protein Kinase Inhibitors/pharmacology MH - Reactive Oxygen Species/*metabolism MH - Signal Transduction/drug effects MH - Structure-Activity Relationship MH - Swine MH - TOR Serine-Threonine Kinases/*metabolism MH - Taurine/chemistry/*pharmacology MH - Virus Replication/*drug effects OTO - NOTNLM OT - 5'AMP-activated protein kinase OT - Autophagy OT - Ochratoxin A OT - Porcine circovirus type 2 OT - Taurine EDAT- 2018/10/18 06:00 MHDA- 2018/12/27 06:00 CRDT- 2018/10/18 06:00 PHST- 2018/07/27 00:00 [received] PHST- 2018/09/18 00:00 [revised] PHST- 2018/10/13 00:00 [accepted] PHST- 2018/10/18 06:00 [pubmed] PHST- 2018/12/27 06:00 [medline] PHST- 2018/10/18 06:00 [entrez] AID - S0009-2797(18)30988-8 [pii] AID - 10.1016/j.cbi.2018.10.005 [doi] PST - ppublish SO - Chem Biol Interact. 2018 Dec 25;296:220-228. doi: 10.1016/j.cbi.2018.10.005. Epub 2018 Oct 14.