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Zhang Y, Yap KN, Williams TD, Swanson DL. Experimental Increases in Foraging Costs Affect Pectoralis Muscle Mass and Myostatin Expression in Female, but Not Male, Zebra Finches (Taeniopygia guttata). Physiol Biochem Zool 2018; 91:849-858. [DOI: 10.1086/697153] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wu F, Jordan A, Kluz T, Shen S, Sun H, Cartularo LA, Costa M. SATB2 expression increased anchorage-independent growth and cell migration in human bronchial epithelial cells. Toxicol Appl Pharmacol 2016; 293:30-6. [PMID: 26780400 DOI: 10.1016/j.taap.2016.01.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 01/05/2016] [Accepted: 01/08/2016] [Indexed: 12/25/2022]
Abstract
The special AT-rich sequence-binding protein 2 (SATB2) is a protein that binds to the nuclear matrix attachment region of the cell and regulates gene expression by altering chromatin structure. In our previous study, we reported that SATB2 gene expression was induced in human bronchial epithelial BEAS-2B cells transformed by arsenic, chromium, nickel and vanadium. In this study, we show that ectopic expression of SATB2 in the normal human bronchial epithelial cell-line BEAS-2B increased anchorage-independent growth and cell migration, meanwhile, shRNA-mediated knockdown of SATB2 significantly decreased anchorage-independent growth in Ni transformed BEAS-2B cells. RNA sequencing analyses of SATB2 regulated genes revealed the enrichment of those involved in cytoskeleton, cell adhesion and cell-movement pathways. Our evidence supports the hypothesis that SATB2 plays an important role in BEAS-2B cell transformation.
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Affiliation(s)
- Feng Wu
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA
| | - Ashley Jordan
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA
| | - Thomas Kluz
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA
| | - Steven Shen
- Center for Health Informatics and Bioinformatics, New York University Langone Medical Center, New York, NY 10016, USA
| | - Hong Sun
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA
| | - Laura A Cartularo
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA
| | - Max Costa
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA.
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Zhou N, Tang Y, Keep RF, Ma X, Xiang J. Antioxidative effects of Panax notoginseng saponins in brain cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2014; 21:1189-95. [PMID: 24916704 PMCID: PMC4111966 DOI: 10.1016/j.phymed.2014.05.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/01/2014] [Accepted: 05/11/2014] [Indexed: 05/26/2023]
Abstract
Oxidative stress resulting from accumulation of reactive oxygen species (ROS) is involved in cell death associated with neurological disorders such as stroke, Alzheimer's disease and traumatic brain injury. Antioxidant compounds that improve endogenous antioxidant defenses have been proposed for neural protection. The purpose of this study was to investigate the potential protective effects of total saponin in leaves of Panax notoginseng (LPNS) on oxidative stress and cell death in brain cells in vitro. Lactate dehydrogenase (LDH) assay indicated that LPNS (5 μg/ml) reduced H2O2-induced cell death in primary rat cortical astrocytes (23±8% reduction in LDH release vs. control). Similar protection was found in oxygen and glucose deprivation/reoxygenation induced SH-SY5Y (a human neuroblastoma cell line) cell damage (78±7% reduction vs. control). The protective effects of LPNS in astrocytes were associated with attenuation of reactive oxygen species (ROS) accumulation. These effects involved activation of Nrf2 (nuclear translocation) and upregulation of downstream antioxidant systems including heme oxygenase-1 (HO-1) and glutathione S-transferase pi 1 (GSTP1). These results demonstrate for the first time that LPNS has antioxidative effects which may be neuroprotective in neurological disorders.
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Affiliation(s)
- Ningna Zhou
- Department of Neurosurgery, Medical School, University of Michigan, Ann Arbor, MI, USA; Department of Pharmacology, Yunnan University of Traditional Chinese Medicine, Kunming, China
| | - Yang Tang
- Department of Neurosurgery, Medical School, University of Michigan, Ann Arbor, MI, USA
| | - Richard F Keep
- Department of Neurosurgery, Medical School, University of Michigan, Ann Arbor, MI, USA; Department of Molecular and Integrative Physiology, Medical School, University of Michigan, Ann Arbor, MI, USA
| | - Xiaoxia Ma
- Department of Chinese Medicine, Yunnan University of Traditional Chinese Medicine, Kunming, China
| | - Jianming Xiang
- Department of Neurosurgery, Medical School, University of Michigan, Ann Arbor, MI, USA.
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