siRNA blocking of mammalian target of rapamycin (mTOR) attenuates pathology in annonacin-induced tauopathy in mice

Salama, Mohamed M. and El-Desouky, Sara and Alsayed, Aziza and El-Hussiny, Mahmoud and Magdy, Khaled and Fekry, Emad and Shabka, Osama and El-Khodery, Sabry A. and Youssef, Mohamed A. and Sobh, Mohamed and Mohamed, Wael Mohamed Yousef (2019) siRNA blocking of mammalian target of rapamycin (mTOR) attenuates pathology in annonacin-induced tauopathy in mice. Neurotoxicity Research, 35 (4). pp. 987-992. ISSN 1029-8428 E-ISSN 1476-3524 (In Press)

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Abstract

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.

Item Type:	Article (Journal)
Additional Information:	7497/67119
Uncontrolled Keywords:	Tauopathy, mTO, siRNA, Neurodegeneration, Autophagy
Subjects:	R Medicine > R Medicine (General) R Medicine > RM Therapeutics. Pharmacology > RM300 Drugs and their action
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Medicine Kulliyyah of Medicine > Department of Basic Medical
Depositing User:	Dr Wael Mohamed
Date Deposited:	30 Oct 2018 11:32
Last Modified:	05 Aug 2019 14:12
URI:	http://irep.iium.edu.my/id/eprint/67119

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