Role of autophagy and mTOR signaling in neural differentiation of bone marrow mesenchymal stem cells

2014 ◽  
Vol 38 (11) ◽  
pp. 1337-1343 ◽  
Author(s):  
Yanfei Li ◽  
Cuiqin Wang ◽  
Guangyu Zhang ◽  
Xiaohan Wang ◽  
Ranran Duan ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Neural Differentiation ◽  
Mtor Signaling ◽  
Marrow Mesenchymal Stem Cells

scholarly journals Updates in the pathophysiological mechanisms of Parkinson’s disease: Emerging role of bone marrow mesenchymal stem cells

2016 ◽  
Vol 8 (3) ◽  
pp. 106 ◽  
Author(s):  
Hanaa H Ahmed ◽  
Ahmed M Salem ◽  
Hazem M Atta ◽  
Emad F Eskandar ◽  
Abdel Razik H Farrag ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Stem Cells ◽  
Bone Marrow ◽  
Parkinson's Disease ◽  
Mesenchymal Stem Cells ◽  
Pathophysiological Mechanisms ◽  
Marrow Mesenchymal Stem Cells

Effect of lead on proliferation and neural differentiation of mouse bone marrow-mesenchymal stem cells

2008 ◽  
Vol 22 (4) ◽  
pp. 995-1001 ◽  
Author(s):  
Shabnam Kermani ◽  
Khadijeh Karbalaie ◽  
Seyed Hossein Madani ◽  
Ali Akbar Jahangirnejad ◽  
Mohamadreza Baghaban Eslaminejad ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Neural Differentiation ◽  
Mouse Bone Marrow ◽  
Marrow Mesenchymal Stem Cells

scholarly journals Melatonin Inhibits the Ferroptotic Pathway in Rat Bone Marrow Mesenchymal Stem Cells by Activating the PI3K-AKT-mTOR Signaling Axis to Attenuate Steroid-induced Osteoporosis

2021 ◽  
Author(s):  
meng li ◽  
ning yang ◽  
li hao ◽  
wei zhou ◽  
lei li ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Mammalian Target Of Rapamycin ◽  
Mtor Signaling ◽  
High Dose ◽  
Treatment Pathways ◽  
Marrow Mesenchymal Stem Cells

Abstract ObjectivesSteroid-induced osteoporosis (SIOP) is a secondary osteoporosis, which is a systemic bone disease characterized by low bone mass, bone microstructure damage, increased bone fragility, and easy fracture. However, the specific mechanism remains unclear. Glucocorticoid-induced death of osteoblasts and bone marrow mesenchymal stem cells (BMSCs) is an important factor in SIOP. Ferroptosis is an iron-dependent programmed cell death that differs from apoptosis, cell necrosis, and autophagy, which can be induced by many factors. Herein, we aimed to explore whether glucocorticoids (GCs) cause ferroptosis in BMSCs and determine possible treatment pathways and mechanisms of action. Melatonin (MT), a hormone secreted by the pineal gland, displays strong antioxidant abilities to scavenge free radicals and alleviates ferroptosis in many tissues and organs. MethodsIn this study, we used high-dose dexamethasone (DEX) to observe whether glucocorticoids induced ferroptosis in BMSCs. We then assessed whether MT can inhibit the ferroptotic pathway, thereby providing early protection against GC-induced SIOP, and investigated the signaling pathways involved.ResultsIn vitro experiments showed that MT intervention significantly improved GC-induced ferroptosis in BMSCs and significantly improved SIOP in vivo. Pathway analysis showed that MT improves ferroptosis by activating the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR) axis. MT upregulates expression of PI3K, which is an important regulator of ferroptosis resistance. PI3K activators mimic the anti-ferroptosis effect of MT, but after blocking the PI3K pathway, the effect of MT is weakened. Obviously, MT can protect against SIOP induced by GC. Notably, even after GC-induced ferroptosis begins, MT can confer protection against SIOP. ConclusionOur research confirms that GC-induced ferroptosis is closely related to SIOP. Melatonin can inhibit ferroptosis by activating the PI3K-AKT-mTOR signaling pathway, thereby reducing the occurrence of steroid-induced osteoporosis. Therefore, MT may provide a novel strategy for preventing and treating SIOP.

Role of spermatogonial stem cells extract in transdifferentiation of 5-Aza-2′-deoxycytidine-treated bone marrow mesenchymal stem cells into germ-like cells

2016 ◽  
Vol 79 (5) ◽  
pp. 365-373 ◽  
Author(s):  
Ebrahim Kharizinejad ◽  
Bagher Minaee Zanganeh ◽  
Neda Khanlarkhani ◽  
Keywan Mortezaee ◽  
Tayebeh Rastegar ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Spermatogonial Stem Cells ◽  
Marrow Mesenchymal Stem Cells

Role of 5-azacytidine in the differentiation of rat bone marrow mesenchymal stem cells into cardiomyogenic cells

2012 ◽  
Vol 35 (1) ◽  
pp. 23-33
Author(s):  
Samy Hosny Hammed ◽  
Amany Mohamed El Shawarby ◽  
Mohamed Abd Elrahman Ahmed ◽  
Mohamed Kamel Abo Golayel ◽  
Asmaa Abd Elmonem Mohamed
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Marrow Mesenchymal Stem Cells ◽  
Rat Bone
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