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Silencing SIRT5 induces the senescence of UCB-MSCs exposed to TNF- α by reduction of fatty acid β-oxidation and anti-oxidation
Free Radic Biol Med. 2022 Sep 9:S0891-5849(22)00583-4. doi: 10.1016/j.freeradbiomed.2022.09.002. Online ahead of print.ABSTRACTTumor necrosis factor-α (TNF-α) is an inflammatory cytokine involved in cell survival, apoptosis, and homeostasis. However, the regulatory effect of TNF-α on mesenchymal stem cell (MSC) redox regulation remains unknown. The process of delaying the senescence of MSCs and maintaining antioxidation mechanism is important in transplantation therapy to treat inflammatory diseases that result from restricted immunomodulatory effects of senescent MSCs. Thus, we examined the role of TNF-α-mediated sign...
Source: Free Radical Biology and Medicine - September 12, 2022 Category: Biology Authors: Young Hyun Jung Chang Woo Chae Han Seung Chang Gee Euhn Choi Hyun Jik Lee Ho Jae Han Source Type: research

Valsartan- and melatonin-supported adipose-derived mesenchymal stem cells preserve renal function in chronic kidney disease rat through upregulation of prion protein participated in promoting PI3K-Akt-mTOR signaling and cell proliferation
In conclusion, Mel/Val facilitated-ADMSCs preserved renal architecture and function in CKD rat through promoting PrPC to regulate the cell proliferation/oxidative-stress/cell-stress signalings.PMID:34923336 | DOI:10.1016/j.biopha.2021.112551
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - December 19, 2021 Category: Drugs & Pharmacology Authors: Chih-Chao Yang Pei-Hsun Sung Kuan-Hung Chen Han-Tan Chai John Y Chiang Sheung-Fat Ko Fan-Yen Lee Hon-Kan Yip Source Type: research

Notch-HEY2 signaling pathway contributes to the differentiation of CD34+ hematopoietic-like stem cells from adult peripheral blood insulin-producing cells after the treatment with platelet-derived mitochondria.
Abstract Previous works characterized a novel cell population from adult human peripheral blood, designated peripheral blood insulin-producing cells (PB-IPC). PB-IPC displayed the pluripotent potential of differentiations after the treatment with platelet-derived mitochondria and gave rise to three germ layer-derived cells such as the mitochondrion-induced CD34+ hematopoietic stem cells (HSC)-like cells (miCD34+ HSC). To determine the molecular mechanism underlying the differentiation of miCD34+ cells, mechanistic studies established that MitoTracker Deep Red-labeled mitochondria could enter into the PB-IPC in a d...
Source: Molecular Biology Reports - September 29, 2020 Category: Molecular Biology Authors: Yu H, Hu W, Song X, Zhao Y Tags: Mol Biol Rep Source Type: research

FGF21 as Modulator of Metabolism in Health and Disease
In conclusion, FGF21 belongs to a promising class of cytokines that are induced in response to stress and that can be used as a drug, drug target, or through a biomarker, depending on the physio-pathological context. All these findings will become clear when FGF21 will be used as a therapeutic molecule, exploiting the beneficial effects of FGF21 for treating metabolic disease or when it will be blocked to ameliorate disease progression and the onset of disease. Author Contributions CT and MS wrote the manuscript. VR contributed to the discussion. Funding This work was supported from the AFM-Telethon (19524), Italian Mi...
Source: Frontiers in Physiology - April 16, 2019 Category: Physiology Source Type: research

Sanguinarine Induces Apoptosis Pathway in Multiple Myeloma Cell Lines via Inhibition of the JaK2/STAT3 Signaling
In this study, we aimed to investigate the potential anti-proliferative and pro-apoptotic activities of SNG in a panel of MM cell lines (U266, IM9, MM1S, and RPMI-8226). SNG treatment of MM cells resulted in a dose-dependent decrease in cell viability through mitochondrial membrane potential loss and activation of caspase 3, 9, and cleavage of PARP. Pre-treatment of MM cells with a universal caspase inhibitor, Z-VAD-FMK, prevented SNG mediated loss of cell viability, apoptosis, and caspase activation, confirming that SNG-mediated apoptosis is caspase-dependent. The SNG-mediated apoptosis appears to be resulted from suppres...
Source: Frontiers in Oncology - April 16, 2019 Category: Cancer & Oncology Source Type: research

Metabolic Maturation of Human Pluripotent Stem Cell-Derived Cardiomyocytes by Inhibition of HIF1 α and LDHA.
CONCLUSIONS: We show that under standard culture conditions, the HIF1α-lactate dehydrogenase A axis is aberrantly upregulated in hPSC-CMs, preventing their metabolic maturation. Chemical or siRNA inhibition of this pathway results in an appropriate metabolic shift from aerobic glycolysis to oxidative phosphorylation. This in turn improves metabolic and functional maturation of hPSC-CMs. These findings provide key insight into molecular control of hPSC-CMs' metabolism and may be used to generate more physiologically mature cardiomyocytes for drug screening, disease modeling, and therapeutic purposes. PMID: 30355156 [PubMed - in process]
Source: Circulation Research - October 12, 2018 Category: Cardiology Authors: Hu D, Linders A, Yamak A, Correia C, Kijlstra JD, Garakani A, Xiao L, Milan DJ, van der Meer P, Serra M, Alves PM, Domian IJ Tags: Circ Res Source Type: research

Mesenchymal Stem Cell-Derived Factors Restore Function to Human Frataxin-Deficient Cells
AbstractFriedreich ’s ataxia is an inherited neurological disorder characterised by mitochondrial dysfunction and increased susceptibility to oxidative stress. At present, no therapy has been shown to reduce disease progression. Strategies being trialled to treat Friedreich’s ataxia include drugs that improve mito chondrial function and reduce oxidative injury. In addition, stem cells have been investigated as a potential therapeutic approach. We have used siRNA-induced knockdown of frataxin in SH-SY5Y cells as an in vitro cellular model for Friedreich’s ataxia. Knockdown of frataxin protein expression to l evels det...
Source: The Cerebellum - April 29, 2017 Category: Neurology Source Type: research

Mesenchymal Stem Cell-Derived Factors Restore Function to Human Frataxin-Deficient Cells.
Abstract Friedreich's ataxia is an inherited neurological disorder characterised by mitochondrial dysfunction and increased susceptibility to oxidative stress. At present, no therapy has been shown to reduce disease progression. Strategies being trialled to treat Friedreich's ataxia include drugs that improve mitochondrial function and reduce oxidative injury. In addition, stem cells have been investigated as a potential therapeutic approach. We have used siRNA-induced knockdown of frataxin in SH-SY5Y cells as an in vitro cellular model for Friedreich's ataxia. Knockdown of frataxin protein expression to levels de...
Source: Cerebellum - April 29, 2017 Category: Neuroscience Authors: Kemp K, Dey R, Cook A, Scolding N, Wilkins A Tags: Cerebellum Source Type: research

Abstract B19: MYC induces PLD6 to suppress YAP/TAZ-dependent self-renewal of mammary stem cells
For the maintenance of a given tissue it is absolutely critical to balance proliferation and differentiation of stem cells, progenitor cells and terminally differentiated cells. Perturbations of these finely tuned processes can lead to various diseases such as cancer.One factor that has been implicated in the transition from a stem cell to a progenitor/ transit-amplifying cell is the oncogenic transcription factor MYC. Paradoxically, despite its strong pro-tumorigenic capabilities it has been shown to promote differentiation in several tissues such as the skin or the hematopoietic system.To identify critical pathways that ...
Source: Molecular Cancer Research - October 18, 2015 Category: Cancer & Oncology Authors: Eyss, B. v., Jaenicke, L. A., Wiese, K., Rosenwald, A., Eilers, M. Tags: Myc Beyond Cancer: Poster Presentations - Proffered Abstracts Source Type: research

Bryostatin 5 induces apoptosis in acute monocytic leukemia cells by activating PUMA and caspases.
Abstract Acute leukemia is a malignant clonal hematopoietic stem cell disease. In the current study, we examined the effects of bryostatin 5 on acute monocytic leukemia cells in vitro and in vivo. We also explored the mechanisms and pathways underlying the increase in apoptosis induced by bryostatin 5. Bryostatin 5 inhibited the growth of primary acute monocytic leukemia cells and U937 cells in a dose- and time-dependent manners. Bryostatin 5 also induced an increase in apoptosis and a decrease in the mitochondrial membrane potential (MMP) in U937 cells. Transmission electron microscopy (TEM) revealed that bryosta...
Source: European Journal of Pharmacology - September 11, 2013 Category: Drugs & Pharmacology Authors: Wang Y, Zhang J, Wang Q, Zhang T, Yang Y, Yang F, Gao G, Dong H, Zhu H, Li Y, Lin H, Tang H, Chen X Tags: Eur J Pharmacol Source Type: research