scholarly journals Shenfu Injection: A Famous Chinese Prescription That Promotes HCN4 Activity in Bone Marrow Mesenchymal Stem Cells

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Xinjun Zhao ◽  
Qingmin Chu ◽  
Wei Wu ◽  
Hui Wu ◽  
Song Wang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Low Dose ◽  
High Dose ◽  
Patch Clamp Technique ◽  
Camp Content ◽  
Shenfu Injection ◽  
Whole Cell Patch Clamp ◽  
Marrow Mesenchymal Stem Cells

We investigated the effects of Shenfu Injection (SFI) on HCN4 activity in bone marrow mesenchymal stem cells (BMSCs). The sample of BMSCs was divided into six groups: a control group, a high-dose SFI group (0.25 ml/ml), a middle-dose SFI group (0.1 ml/ml), a low-dose SFI group (0.05 ml/ml), an adenovirus-encoded control vector group, and an adenovirus-encoded HCN4 group. Cell ultrastructure was observed using a transmission electron microscope. Quantitative reverse transcription PCR (RT-qPCR) was performed to detect HCN4 expression, and HCN4 activity was detected using the whole-cell patch clamp technique. An enzyme-linked immunosorbent assay was performed to detect cAMP content. Application of flow cytometry confirmed that the isolated cells showed BMSC-like phenotypes. Differentiation of BMSCs in both the SFI and the adenovirus-encoding HCN4 groups occurred according to the cellular ultrastructure. Application of the whole-cell patch clamp technique revealed that SFI could activate the inward pacing current of BMSCs in a concentration-dependent manner. The RT-qPCR results showed that HCN4 expression was significantly higher in the high-dose SFI group than in the medium- and low-dose groups, whereas the cAMP content in the overexpressed HCN4 group decreased significantly; this content in the high-dose SFI group increased significantly. In conclusion, SFI promotes HCN4 activity in BMSCs, which could explain its treatment effect when administered to patients with cardiovascular diseases.

scholarly journals Bone marrow mesenchymal stem cells promote remyelination in spinal cord by driving oligodendrocyte progenitor cell differentiation via TNFα/RelB-Hes1 pathway: a rat model study of 2,5-hexanedione-induced neurotoxicity

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shuangyue Li ◽  
Huai Guan ◽  
Yan Zhang ◽  
Sheng Li ◽  
Kaixin Li ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Statistical Significance ◽  
High Dose ◽  
Sprague Dawley ◽  
Oligodendrocyte Progenitor ◽  
Hes1 Expression ◽  
Marrow Mesenchymal Stem Cells

Abstract Background N-hexane, with its metabolite 2,5-hexanedine (HD), is an industrial hazardous material. Chronic hexane exposure causes segmental demyelination in the peripheral nerves, and high-dose intoxication may also affect central nervous system. Demyelinating conditions are difficult to treat and stem cell therapy using bone marrow mesenchymal stem cells (BMSCs) is a promising novel strategy. Our previous study found that BMSCs promoted motor function recovery in rats modeling hexane neurotoxicity. This work aimed to explore the underlying mechanisms and focused on the changes in spinal cord. Methods Sprague Dawley rats were intoxicated with HD (400 mg/kg/day, i.p, for 5 weeks). A bolus of BMSCs (5 × 107 cells/kg) was injected via tail vein. Demyelination and remyelination of the spinal cord before and after BMSC treatment were examined microscopically. Cultured oligodendrocyte progenitor cells (OPCs) were incubated with HD ± BMSC-derived conditional medium (BMSC-CM). OPC differentiation was studied by immunostaining and morphometric analysis. The expressional changes of Hes1, a transcription factor negatively regulating OPC-differentiation, were studied. The upstream Notch1 and TNFα/RelB pathways were studied, and some key signaling molecules were measured. The correlation between neurotrophin NGF and TNFα was also investigated. Statistical significance was evaluated using one-way ANOVA and performed using SPSS 13.0. Results  The demyelinating damage by HD and remyelination by BMSCs were evidenced by electron microscopy, LFB staining and NG2/MBP immunohistochemistry. In vitro cultured OPCs showed more differentiation after incubation with BMSC-CM. Hes1 expression was found to be significantly increased by HD and decreased by BMSC or BMSC-CM. The change of Hes1 was found, however, independent of Notch1 activation, but dependent on TNFα/RelB signaling. HD was found to increase TNFα, RelB and Hes1 expression, and BMSCs were found to have the opposite effect. Addition of recombinant TNFα to OPCs or RelB overexpression similarly caused upregulation of Hes1 expression. The secretion of NGF by BMSC and activation of NGF receptor was found important for suppression of TNFα production in OPCs. Conclusions  Our findings demonstrated that BMSCs promote remyelination in the spinal cord of HD-exposed rats via TNFα/RelB-Hes1 pathway, providing novel insights for evaluating and further exploring the therapeutical effect of BMSCs on demyelinating neurodegenerative disease.

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.

scholarly journals Phase I Trial of Intra-arterial Administration of Autologous Bone Marrow-Derived Mesenchymal Stem Cells in Patients with Multiple System Atrophy

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Seok Jong Chung ◽  
Tae Yong Lee ◽  
Yang Hyun Lee ◽  
KyoungWon Baik ◽  
Jin Ho Jung ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Multiple System Atrophy ◽  
Phase I ◽  
Dose Group ◽  
Low Dose ◽  
Autologous Bone Marrow ◽  
High Dose ◽  
Autologous Bone

Background. This study is aimed at investigating the safety and tolerability of the intra-arterial administration of autologous bone marrow-derived mesenchymal stem cells (BM-MSCs) in patients with multiple system atrophy- (MSA-) cerebellar type (MSA-C). Methods. This was a single-center, open-label phase I clinical trial in patients with MSA-C. A three-stage dose escalation scheme (low-dose, 3.0 × 10 5 cells/kg; medium-dose, 6.0 × 10 5 cells/kg; high-dose, 9.0 × 10 5 cells/kg) was applied to determine the maximum tolerated dose of intra-arterial administration of BM-MSCs based on the no-observed-adverse-effect level derived from the toxicity study. The occurrence of adverse events was evaluated 1 day before and 1, 14, and 28 days after BM-MSC therapy. Additionally, we assessed changes in the Unified MSA Rating Scale (UMSARS) score 3 months after BM-MSC treatment. Results. One serious adverse drug reaction (ADR) of leptomeningeal enhancement following the intra-arterial BM-MSC administration occurred in one patient in the low-dose group. The safety review of the Internal Monitoring Committee interpreted this as radiological evidence of the blood-brain barrier permeability for MSCs. No other ADRs were observed in the medium- or high-dose groups. In particular, no ischemic lesions on diffusion-weighted images were observed in any of the study participants. Additionally, the medium- and high-dose groups tended to show a slower increase in UMSARS scores than the low-dose group during the 3-month follow-up. Conclusion. The present study confirmed that a single intra-arterial administration of autologous BM-MSCs is a safe and promising neuroprotective strategy in patients with MSA-C.

scholarly journals Residual γH2AX foci induced by low dose x-ray radiation in bone marrow mesenchymal stem cells do not cause accelerated senescence in the progeny of irradiated cells

Aging ◽  
2017 ◽  
Vol 9 (11) ◽  
pp. 2397-2410 ◽  
Author(s):  
Margarita Pustovalova ◽  
Тatiana A. Astrelina ◽  
Anna Grekhova ◽  
Natalia Vorobyeva ◽  
Anastasia Tsvetkova ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Low Dose ◽  
X Ray ◽  
Γh2ax Foci ◽  
Marrow Mesenchymal Stem Cells ◽  
Accelerated Senescence

scholarly journals Phase I Trial of Intra-arterial Administration of Autologous Bone Marrow-Derived Mesenchymal Stem Cells in Patients with Multiple System Atrophy

2020 ◽  
Author(s):  
Seok Jong Chung ◽  
Tae Yong Lee ◽  
Yang Hyun Lee ◽  
KyoungWon Baik ◽  
Jin Ho Jung ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Multiple System Atrophy ◽  
Phase I ◽  
Dose Group ◽  
Low Dose ◽  
Autologous Bone Marrow ◽  
High Dose ◽  
Autologous Bone

Abstract Background: This study aimed to investigate the safety and tolerability of the intra-arterial administration of autologous bone marrow-derived mesenchymal stem cells (BM-MSCs) in patients with multiple system atrophy (MSA)-cerebellar type (MSA-C).Methods: This was a single-center, open-label phase I clinical trial in patients with MSA-C. A three-stage dose escalation scheme (low-dose, 3.0 × 105 cells/kg; medium-dose, 6.0 × 105 cells/kg; high-dose, 9.0 × 105 cells/kg) was applied to determine the maximum tolerated dose of intra-arterial administration of BM-MSCs based on the no-observed-adverse-effect level derived from the toxicity study. The occurrence of adverse events was evaluated 1 day before and 1, 14, and 28 days after BM-MSC therapy. Additionally, we assessed changes in the Unified MSA Rating Scale (UMSARS) score 3 months after BM-MSC treatment.Results: One serious adverse drug reaction (ADR) of leptomeningeal enhancement following the intra-arterial BM-MSC administration occurred in one patient in the low-dose group. The safety review of the Internal Monitoring Committee interpreted this as radiological evidence of the blood-brain barrier permeability for MSCs. No other ADRs were observed in the medium- or high-dose groups. In particular, no ischemic lesions on diffusion-weighted images were observed in any of the study participants. Additionally, the medium- and high-dose groups tended to show a slower increase in UMSARS scores than the low-dose group during the 3-month follow-up.Conclusions: The present study confirmed that a single intra-arterial administration of autologous BM-MSCs is a safe and promising neuroprotective strategy in patients with MSA-C.Trial registration: This trial was registered at http://www.clinicaltrials.gov as #NCT03265444. Registered 29 August 2017, https://clinicaltrials.gov/ct2/show/NCT03265444?term=NCT03265444.&draw=2&rank=1.

Effect of Shenfu Injection on Slow Arrhythmia and Bone Marrow Mesenchymal Stem Cells

2018 ◽  
Vol 8 (7) ◽  
pp. 1031-1037
Author(s):  
Rong Li ◽  
XinJun Zhao ◽  
XiangPei Wang ◽  
QingMin Chu ◽  
ChuangChang Wang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Shenfu Injection ◽  
Marrow Mesenchymal Stem Cells

scholarly journals Transplantation of Bone Marrow Mesenchymal Stem Cells Prevents Radiation-Induced Artery Injury by Suppressing Oxidative Stress and Inflammation

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Yanjun Shen ◽  
Xin Jiang ◽  
Lingbin Meng ◽  
Chengcheng Xia ◽  
Lihong Zhang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Protective Effect ◽  
Human Bone ◽  
Human Bone Marrow ◽  
High Dose ◽  
Marrow Mesenchymal Stem Cells ◽  
Radiation Induced

The present study aims to explore the protective effect of human bone marrow mesenchymal stem cells (hBMSCs) on radiation-induced aortic injury (RIAI). hBMSCs were isolated and cultured from human bone marrow. Male C57/BL mice were irradiated with a dose of 18-Gy 6MV X-ray and randomly treated with either vehicle or hBMSCs through tail vein injection with a dose of 103 or 104 cells/g of body weight (low or high dose of hBMSCs) within 24 h. Aortic inflammation, oxidative stress, and vascular remodeling were assessed by immunohistochemical staining at 3, 7, 14, 28, and 84 days after irradiation. The results revealed irradiation caused aortic cell apoptosis and fibrotic remodeling indicated by aortic thickening, collagen accumulation, and increased expression of profibrotic cytokines (CTGF and TGF-β). Further investigation showed that irradiation resulted in elevated expression of inflammation-related molecules (TNF-α and ICAM-1) and oxidative stress indicators (4-HNE and 3-NT). Both of the low and high doses of hBMSCs alleviated the above irradiation-induced pathological changes and elevated the antioxidant enzyme expression of HO-1 and catalase in the aorta. The high dose even showed a better protective effect. In conclusion, hBMSCs provide significant protection against RIAI possibly through inhibition of aortic oxidative stress and inflammation. Therefore, hBMSCs can be used as a potential therapy to treat RIAI.

scholarly journals Differentiation of Bone Marrow Mesenchymal Stem Cells to Cardiomyocyte-Like Cells Is Regulated by the Combined Low Dose Treatment of Transforming Growth Factor-β1 and 5-Azacytidine

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Shutian Shi ◽  
Xingxin Wu ◽  
Xiao Wang ◽  
Wen Hao ◽  
Huangtai Miao ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Growth Factor ◽  
Treatment Group ◽  
Low Dose ◽  
Troponin I ◽  
Transforming Growth Factor ◽  
Dose Treatment ◽  
Marrow Mesenchymal Stem Cells

Bone marrow mesenchymal stem cells (BMMSCs) are used in cardiac tissue engineering for the regeneration of diseased hearts. We examined the differentiation of rat BMMSCs into cardiomyocyte-like cells when induced with a combined low dose treatment of transforming growth factor-β1 (TGF-β1) and 5-azacytidine (5-AZA). Results showed that cell proliferation in the combined low dose treatment group of TGF-β1 and 5-AZA was increased compared with the TGF-β1 group or the 5-AZA group. The cell apoptosis was relieved by combined TGF-β1 and 5-AZA treatment compared to 5-AZA treatment alone. The number of cells positive for myosin heavy chain, connexin-43,α-actin, and troponin I in the combined treatment group was higher than those observed in the TGF-β1 group or the 5-AZA group. Moreover, the combined low dose treatment group of TGF-β1 and 5-AZA reveals the strongest expression of troponin I,α-actin, and phosphorylated extracellular signal-regulated protein kinases 1 and 2 (p-ErK1/2) among the treatment groups. These results suggest that the combined low dose treatment of TGF-β1 and 5-AZA can improve the differentiation potential of rat BMMSCs into cardiomyocyte-like cells and alleviate cell damage effectsin vitro. The mechanism that is involved in influencing differentiation may be associated with p-ErK1/2.

scholarly journals Chronic High Dose Alcohol Induces Osteopenia via Activation of mTOR Signaling in Bone Marrow Mesenchymal Stem Cells

Stem Cells ◽  
2016 ◽  
Vol 34 (8) ◽  
pp. 2157-2168 ◽  
Author(s):  
Yao Liu ◽  
Xiaoxing Kou ◽  
Chider Chen ◽  
Wenjing Yu ◽  
Yingying Su ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Mtor Signaling ◽  
High Dose ◽  
Marrow Mesenchymal Stem Cells

scholarly journals High-Dose 111In Induces G1 Cell Cycle Arrest and Cell Death in Rat Bone Marrow Mesenchymal Stem Cells

2012 ◽  
Vol 46 (2) ◽  
pp. 81-88 ◽  
Author(s):  
Bok-Nam Park ◽  
Wooyoung Shim ◽  
Young Hwan Ahn ◽  
Jae-Ho Lee ◽  
Young-Sil An ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Bone Marrow ◽  
Cell Death ◽  
Mesenchymal Stem Cells ◽  
High Dose ◽  
Cycle Arrest ◽  
Marrow Mesenchymal Stem Cells ◽  
G1 Cell Cycle Arrest ◽  
Rat Bone
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