PMID- 30362086 OWN - NLM STAT- MEDLINE DCOM- 20190523 LR - 20211204 IS - 1476-3524 (Electronic) IS - 1029-8428 (Linking) VI - 35 IP - 4 DP - 2019 May TI - siRNA Blocking of Mammalian Target of Rapamycin (mTOR) Attenuates Pathology in Annonacin-Induced Tauopathy in Mice. PG - 987-992 LID - 10.1007/s12640-018-9974-3 [doi] AB - Tauopathy is a pathological hallmark of many neurodegenerative diseases. It is characterized by abnormal aggregates of pathological phosphotau and somatodendritic redistribution. One suggested strategy for treating tauopathy is to stimulate autophagy, hence, getting rid of these pathological protein aggregates. One key controller of autophagy is mTOR. Since stimulation of mTOR leads to inhibition of autophagy, inhibitors of mTOR will cause stimulation of autophagy process. In this report, tauopathy was induced in mice using annonacin. Blocking of mTOR was achieved through stereotaxic injection of siRNA against mTOR. The behavioral and immunohistochemical evaluation revealed the development of tauopathy model as proven by deterioration of behavioral performance in open field test and significant tau aggregates in annonacin-treated mice. Blocking of mTOR revealed significant clearance of tau aggregates in the injected side; however, tau expression was not affected by mTOR blockage. FAU - Salama, Mohamed AU - Salama M AUID- ORCID: 0000-0003-1644-0273 AD - Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Elgomhourya street, Mansoura, 36551, Egypt. toxicsalama@hotmail.com. AD - Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt. toxicsalama@hotmail.com. FAU - El-Desouky, Sara AU - El-Desouky S AD - Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Elgomhourya street, Mansoura, 36551, Egypt. FAU - Alsayed, Aziza AU - Alsayed A AD - Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Elgomhourya street, Mansoura, 36551, Egypt. FAU - El-Hussiny, Mahmoud AU - El-Hussiny M AD - Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Elgomhourya street, Mansoura, 36551, Egypt. FAU - Magdy, Khaled AU - Magdy K AD - Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Elgomhourya street, Mansoura, 36551, Egypt. FAU - Fekry, Emad AU - Fekry E AD - Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt. FAU - Shabka, Osama AU - Shabka O AD - Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt. FAU - El-Khodery, Sabry A AU - El-Khodery SA AD - Internal Medicine Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt. FAU - Youssef, Mohamed A AU - Youssef MA AD - Internal Medicine Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt. FAU - Sobh, Mohamed AU - Sobh M AD - Urology and Nephrology Center (UNC) Faculty of Medicine, Mansoura University, Mansoura, Egypt. FAU - Mohamed, Wael AU - Mohamed W AD - Department of Clinical Pharmacology, Faculty of Medicine, Menoufia University, Shebeen El-Kom, Egypt. AD - Department of Basic Medical Science, Kulliyyah of Medicine, International Islamic University, Kuantan, Pahang, Malaysia. LA - eng GR - BARG 13892/Science and Technology Development Fund (STDF)/ PT - Journal Article DEP - 20181025 PL - United States TA - Neurotox Res JT - Neurotoxicity research JID - 100929017 RN - 0 (Furans) RN - 0 (Lactones) RN - 0 (RNA, Small Interfering) RN - 40372ET6TM (annonacin) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Autophagy MH - Brain/metabolism/*pathology MH - Furans MH - Lactones MH - Male MH - Mice, Inbred C57BL MH - Neurons/metabolism/*pathology MH - Protein Aggregation, Pathological/metabolism MH - RNA, Small Interfering/administration & dosage MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors/metabolism MH - Tauopathies/chemically induced/metabolism/*pathology OTO - NOTNLM OT - Autophagy OT - Neurodegeneration OT - Tauopathy OT - mTOR OT - siRNA EDAT- 2018/10/27 06:00 MHDA- 2019/05/24 06:00 CRDT- 2018/10/27 06:00 PHST- 2018/09/24 00:00 [received] PHST- 2018/10/19 00:00 [accepted] PHST- 2018/10/16 00:00 [revised] PHST- 2018/10/27 06:00 [pubmed] PHST- 2019/05/24 06:00 [medline] PHST- 2018/10/27 06:00 [entrez] AID - 10.1007/s12640-018-9974-3 [pii] AID - 10.1007/s12640-018-9974-3 [doi] PST - ppublish SO - Neurotox Res. 2019 May;35(4):987-992. doi: 10.1007/s12640-018-9974-3. Epub 2018 Oct 25.