Hydrogen peroxide inhibits proliferation and endothelial differentiation of bone marrow stem cells independent of reactive oxygen species generation

2013 ◽  
Vol 41 (8) ◽  
pp. S74
Author(s):  
Zhenguo Liu ◽  
Yuan Xiao ◽  
Xin Li ◽  
Lingjuan Liu ◽  
Catherine Verfaillie ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Hydrogen Peroxide ◽  
Stem Cells ◽  
Bone Marrow ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Bone Marrow Stem Cells ◽  
Endothelial Differentiation ◽  
Oxygen Species

scholarly journals Fe3O4@GO magnetic nanocomposites protect mesenchymal stem cells and promote osteogenic differentiation of rat bone marrow mesenchymal stem cells

2020 ◽  
Vol 8 (21) ◽  
pp. 5984-5993
Author(s):  
He Zhang ◽  
Sirong Li ◽  
Yufeng Liu ◽  
Yijun Yu ◽  
Shichao Lin ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Osteogenic Differentiation ◽  
Reactive Oxygen ◽  
Magnetic Nanocomposites ◽  
Oxygen Species ◽  
Marrow Mesenchymal Stem Cells ◽  
Rat Bone

Fe3O4@GO/BMP2 protecting mesenchymal stem cells by regulating reactive oxygen species and promoting osteogenic differentiation of cells.

scholarly journals Role of Natural Radiosensitizers and Cancer Cell Radioresistance: An Update

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Arif Malik ◽  
Misbah Sultana ◽  
Aamer Qazi ◽  
Mahmood Husain Qazi ◽  
Gulshan Parveen ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Stem Cells ◽  
Radiation Therapy ◽  
Cancer Stem Cells ◽  
Ionizing Radiation ◽  
Malignant Tumors ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Ros Scavenging

Cancer originates from genetic mutations accumulation. Cancer stem cells have been depicted as tumorigenic cells that can differentiate and self-renew. Cancer stem cells are thought to be resistant to conventional therapy like chemotherapy and radiation therapy. Radiation therapy and chemotherapy damage carcinomic DNA cells. Because of the ability of cancer stem cells to self-renew and reproduce malignant tumors, they are the subject of intensive research. In this review, CSCs radioresistant mechanisms which include DNA damage response and natural radiosensitizers have been summed up. Reactive oxygen species play an important role in different physiological processes. ROS scavenging is responsible for regulation of reactive oxygen species generation. A researcher has proved that microRNAs regulate tumor radiation resistance. Ionizing radiation does not kill the cancer cells; rather, IR just slows down the signs and symptoms. Ionizing radiation damages DNA directly/indirectly. IR is given mostly in combination with other chemo/radiotherapies. We briefly described here the behavior of cancer stem cells and radioresistance therapies in cancer treatment. To overcome radioresistance in treatment of cancer, strategies like fractionation modification, treatment in combination, inflammation modification, and overcoming hypoxic tumor have been practiced. Natural radiosensitizers, for example, curcumin, genistein, and quercetin, are more beneficial than synthetic compounds.

scholarly journals The Role ofHibiscus sabdariffaL. (Roselle) in Maintenance ofEx VivoMurine Bone Marrow-Derived Hematopoietic Stem Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Zariyantey Abdul Hamid ◽  
Winnie Hii Lin Lin ◽  
Basma Jibril Abdalla ◽  
Ong Bee Yuen ◽  
Elda Surhaida Latif ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Stem Cells ◽  
Bone Marrow ◽  
Dna Damage ◽  
Ex Vivo ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Sod Activity ◽  
Hematopoietic Stem ◽  
Murine Bone Marrow

Hematopoietic stem cells- (HSCs-) based therapy requiresex vivoexpansion of HSCs prior to therapeutic use. However,ex vivoculture was reported to promote excessive production of reactive oxygen species (ROS), exposing HSCs to oxidative damage. Efforts to overcome this limitation include the use of antioxidants. In this study, the role ofHibiscus sabdariffaL. (Roselle) in maintenance of cultured murine bone marrow-derived HSCs was investigated. Aqueous extract of Roselle was added at varying concentrations (0–1000 ng/mL) for 24 hours to the freshly isolated murine bone marrow cells (BMCs) cultures. Effects of Roselle on cell viability, reactive oxygen species (ROS) production, glutathione (GSH) level, superoxide dismutase (SOD) activity, and DNA damage were investigated. Roselle enhanced the survival(P<0.05)of BMCs at 500 and 1000 ng/mL, increased survival of Sca-1+cells (HSCs) at 500 ng/mL, and maintained HSCs phenotype as shown from nonremarkable changes of surface marker antigen (Sca-1) expression in all experimental groups. Roselle increased(P<0.05)the GSH level and SOD activity but the level of reactive oxygen species (ROS) was unaffected. Moreover, Roselle showed significant cellular genoprotective potency against H2O2-induced DNA damage. Conclusively, Roselle shows novel property as potential supplement and genoprotectant against oxidative damage to cultured HSCs.

scholarly journals Pioglitazone Improves the Function of Human Mesenchymal Stem Cells in Chronic Kidney Disease Patients

2019 ◽  
Vol 20 (9) ◽  
pp. 2314 ◽  
Author(s):  
Yeo Min Yoon ◽  
Jun Hee Lee ◽  
Chul Won Yun ◽  
Sang Hun Lee
Keyword(s):  
Reactive Oxygen Species ◽  
Chronic Kidney Disease ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Kidney Disease ◽  
Er Stress ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Cellular Prion Protein ◽  
Oxygen Species

Mesenchymal stem cells (MSCs) are optimal sources of autologous stem cells for cell-based therapy in chronic kidney disease (CKD). However, CKD-associated pathophysiological conditions, such as endoplasmic reticulum (ER) stress and oxidative stress, decrease MSC function. In this work, we study the protective effect of pioglitazone on MSCs isolated from CKD patients (CKD-MSCs) against CKD-induced ER stress. In CKD-MSCs, ER stress is found to induce mitochondrial reactive oxygen species generation and mitochondrial dysfunction. Treatment with pioglitazone reduces the expression of ER stress markers and mitochondrial fusion proteins. Pioglitazone increases the expression of cellular prion protein (PrPC) in CKD-MSCs, which is dependent on the expression levels of proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α). Treatment with pioglitazone is found to protect CKD-MSCs against reactive oxygen species generation, aberrant mitochondrial oxidative phosphorylation of complexes I and IV, and aberrant proliferation capacity through the PGC-1α-PrPC axis. These results indicate that pioglitazone protects the mitochondria of MSCs from CKD-induced ER stress. Pioglitazone treatment of CKD-MSCs may be a potential therapeutic strategy for CKD patients.

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