Abstract:
Background:Oxidized human DNA or plasmid DNAs containing human ribosomal genes can easily penetrate into the breast cancer cells MCF7 and stimulate the adaptive response induction. Plasmid DNA containing a CMV promoter, gene EGFP, and the insertion of the human ribosomal genes can be expressed. A hypothesis is proposed: these features of the ribosomal DNA are due to the presence of dGn motifs that are prone to oxidize. Methods:Cells of MCF7 line were cultured with plasmids which contained a CMV promoter and gene of fluorescent protein EGFP. Genetic construction pEGFP-Gn contains pEGFP vector and a small insertion with dG11 and dG13 motifs that are inclined to oxidation. The accumulation of pEGFP and pEGFP-Gn in MCF7 (qPCR), the levels of ROS in the cells, the content of 8-oxodG in plasmids and cellular DNA (flow cytometry, immunoassay, and fluorescent microscopy), the expression of NOX4 and EGFP, the localization of NOX4 and EGFP in MCF7 (qPCR, flow cytometry, and fluorescent microscopy), and the levels of the cell DNA damage (comet assay) were analyzed. Results:(dG)n insertions in the plasmid pEGFP increase the levels of ROS, the cell DNA oxidation and DNA damage, and the level of transfection of plasmid into the MCF7 cells. NOX4 participates in the oxidation of pEGFP-Gn and pEGFP. The expression of EGFP gene in MCF7 is significantly increased in case of pEGFP-Gn. Stimulation of ROS synthesis (H2O2 40 μM or 10 cGy IR) increases the level of expression of EGFP. Conclusions:GC-rich DNA fragments containing dGn motifs that are inclined to oxidation penetrate into MCF7 cancer cells, stimulate the adaptive response, and can be expressed. This property of GC-rich cell-free DNA should be considered and/or could potentially be used in therapy of tumors.
journal_name
Oxid Med Cell Longevjournal_title
Oxidative medicine and cellular longevityauthors
Kozhina EA,Ershova ES,Okorokova NA,Veiko VP,Malinovskaya EM,Sergeeva VA,Konkova MS,Kutsev SI,Veiko NN,Kostyuk SVdoi
10.1155/2019/7853492subject
Has Abstractpub_date
2019-11-03 00:00:00pages
7853492eissn
1942-0900issn
1942-0994journal_volume
2019pub_type
杂志文章abstract::In Alzheimer's disease, lipid alterations point towards peroxisomal dysfunctions. Indeed, a cortical accumulation of saturated very long chain fatty acids (VLCFAs: C22:0, C24:0, C26:0), substrates for peroxisomal β-oxidation, has been found in Alzheimer patients. This study was realized to investigate the effects of V...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2012/623257
更新日期:2012-01-01 00:00:00
abstract::We investigated the effect of high-frequency electromagnetic fields (HF-EMFs) and 17-β-estradiol on connexins (Cxs), integrins (Ints), and estrogen receptor (ER) expression, as well as on ultrastructure of trophoblast-derived HTR-8/SVneo cells. HF-EMF, 17-β-estradiol, and their combination induced an increase of Cx40 ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2013/280850
更新日期:2013-01-01 00:00:00
abstract::As a pair of differential isomers, Kaji-ichigoside F1 and Rosamultin are both pentacyclic triterpenoids isolated from the subterranean root of Potentilla anserina L., a plant used in folk medicine in western China as antihypoxia and anti-inflammatory treatments. We demonstrated that Kaji-ichigoside F1 and Rosamultin e...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/6837982
更新日期:2020-04-12 00:00:00
abstract::Balkan endemic nephropathy (BEN) represents a chronic tubulointerstitial nephropathy which is followed by the progression of kidney fibrosis to end-stage kidney failure. The critical involvement of poisons in food (aristolochic acid (AA), ochratoxin, and heavy metals) and selenium deficiency are among nutritive factor...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/8209727
更新日期:2020-08-18 00:00:00
abstract::A decreased nitric oxide (NO) bioavailability and an increased oxidative stress play a pivotal role in different cardiovascular pathologies. As red blood cells (RBCs) participate in NO formation in the bloodstream, the aim of this study was to outline the metabolic profile of L-arginine (Arg)/NO pathway and of oxidati...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2014/726539
更新日期:2014-01-01 00:00:00
abstract::We conducted quantitative cellular respiration analysis on samples taken from human breast cancer (HBC) and human colorectal cancer (HCC) patients. Respiratory capacity is not lost as a result of tumor formation and even though, functionally, complex I in HCC was found to be suppressed, it was not evident on the prote...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/1372640
更新日期:2017-01-01 00:00:00
abstract::Respiratory diseases are accompanied by intensification of free radical processes at different levels of the biological body organization. Simultaneous stress and suppression of various parts of antioxidant protection lead to the development of oxidative stress (OS) and nitrosative stress (NS). The basic mechanisms of...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2019/1689861
更新日期:2019-05-22 00:00:00
abstract::Reactive oxygen species (ROS) regulate bone marrow microenvironment for stem and progenitor cells functions including self-renewal, differentiation, and cell senescence. In response to ischemia, ROS also play a critical role in mediating the mobilization of endothelial progenitor cells (EPCs) from the bone marrow to t...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2016/7095901
更新日期:2015-01-01 00:00:00
abstract::The role of altered redox status and high reactive oxygen species (ROS) is still controversial in cancer development and progression. Intracellular levels of ROS are elevated in cancer cells suggesting a role in cancer initiation and progression; on the contrary, ROS elevated levels may induce programmed cell death an...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2017/2597581
更新日期:2017-01-01 00:00:00
abstract::Hereditary hemorrhagic telangiectasia (HHT) is a vascular dysplasia caused by mutations in endoglin (ENG; HHT1) or activin receptor-like kinase (ALK1; HHT2) genes, coding for transforming growth factor-β (TGF-β) superfamily receptors. We demonstrated previously that endoglin and ALK1 interact with endothelial NO synth...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2012/686972
更新日期:2012-01-01 00:00:00
abstract:Objective:Oxidized cholesterol derivatives are compounds with proven atherogenic and mutagenic effects. However, little is known about the effect of oxidized plant sterol derivatives (oxyphytosterols), whose structure is similar to the one of oxycholesterols. Our previous studies indicate that they have a similar profi...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/4751803
更新日期:2020-06-08 00:00:00
abstract::Oxidative stress reflects an imbalance between oxidants and antioxidants in favor of the oxidants capable of evoking tissue damage. Like hydrogen sulfide (H2S) and nitric oxide (NO), carbon monoxide (CO) is an endogenous gaseous mediator recently implicated in the physiology of the gastrointestinal (GI) tract. CO is p...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2020/5083876
更新日期:2020-04-15 00:00:00
abstract::Autophagy is upregulated in spinal cord ischemia reperfusion (SCIR) injury; however, its expression mechanism is largely unknown; moreover, whether autophagy plays a neuroprotective or neurodegenerative role in SCIR injury remains controversial. To explore these issues, we created an SCIR injury rat model via aortic a...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/8640284
更新日期:2017-01-01 00:00:00
abstract:Objective:The aim of this study was to establish a 3T3-L1 adipocyte model and ApoE-/- mouse model of intermittent hypoxia (IH) composite abnormal glucose metabolism (AGM) in vitro and in vivo and explore their synergistic damage effect leading to atherosclerosis (AS) and the influence of SREBP-1 signaling molecule-rela...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/4862760
更新日期:2019-02-04 00:00:00
abstract::We have demonstrated that neural progenitor cells (NPCs) protect endothelial cells (ECs) from oxidative stress. Since exosomes (EXs) can convey the benefit of parent cells through their carried microRNAs (miRs) and miR-210 is ubiquitously expressed with versatile functions, we investigated the role of miR-210 in the e...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/9397631
更新日期:2017-01-01 00:00:00
abstract::Intracellular reactive apoptosis and reactive oxygen species (ROS) play a crucial role in ultraviolet- (UV-) induced inflammation and aging reaction in human dermal tissues. This study determines the mechanism by which Haematococcus pluvialis extracts (HPE) and purified astaxanthin (HPA) to promote skin regeneration i...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/4946902
更新日期:2020-08-03 00:00:00
abstract:Background:Renal fibrosis is a common pathological symptom of chronic kidney disease (CKD). Many studies support that mitochondrial dysfunction and endoplasmic reticulum (ER) stress are implicated in the pathogenesis of CKD. In our study, we investigated the benefits and underlying mechanisms of Mito-TEMPO on renal fib...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/5828120
更新日期:2018-03-25 00:00:00
abstract::Recent reports indicate that oxidative stress is involved in the pathobiology of acute spinal cord injury or compression myelopathy. We conducted an observational study to determine levels of oxidative stress markers in serum from 80 patients who underwent spinal surgery to treat neurological symptoms related to lumba...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/5649767
更新日期:2020-12-24 00:00:00
abstract::Fisetin, a known antioxidant, has been found to be cytotoxic against certain cell lines. However, the mechanism by which it inhibits tumor growth in vivo remains unexplored. Recently, we have demonstrated that Aflatoxin-B1 (AFB1) induced hepatocarcinogenesis is associated with activation of oxidative stress-inflammato...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/1972793
更新日期:2016-01-01 00:00:00
abstract::Hyperthyroidism is an endocrine disorder characterized by excessive secretion of thyroid hormones T3 and T4. Thyroid hormones exert pleiotropic actions on numerous tissues and induce an overall increase in metabolism, with an increase in energy demand and oxygen consumption. Therefore, the purpose of this study was to...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/7471890
更新日期:2019-06-02 00:00:00
abstract::Fruits, such as grapes, are essential food of the Mediterranean diet. Grape extracts have potent antioxidant and chemopreventive properties in vitro. Numerous studies have examined the effects of plant extract administration on redox status at rest in animals and humans but their results are controversial. However, th...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2012/185867
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Chronic alcohol-related liver disease (ALD) is mediated by insulin resistance, mitochondrial dysfunction, inflammation, oxidative stress, and DNA damage. Recent studies suggest that dysregulated lipid metabolism with accumulation of ceramides, together with ER stress potentiate hepatic insulin resistance and...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2012/479348
更新日期:2012-01-01 00:00:00
abstract::Nutritional status, in particular overweight and obesity, as well as sedentarism and high-fat diet consumption, are important risk factors to develop chronic diseases, which have a higher impact on the elderly's health. Therefore, these nutritional problems have become a concern to human healthspan and longevity. The ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/3123268
更新日期:2020-05-16 00:00:00
abstract::Oxidative stress induced by long-term glucocorticoid (GC) use weakens the repair capacity of bone tissue. Nicotinamide adenine dinucleotide phosphate, reduced form (NADPH) oxidase (NOX) is a superoxide-generating enzyme that plays an important role in regulating bone metabolism. To clarify the role of nonphagocytic NO...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/9192413
更新日期:2019-03-27 00:00:00
abstract::In an attempt to better understand the pathogen-host interaction between invading Mycoplasma ovipneumoniae (M. ovipneumoniae) and sheep airway epithelial cells, biological effects and possible molecular mechanism of capsular polysaccharide of M. ovipneumoniae (CPS) in the induction of cell apoptosis were explored usin...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/6175841
更新日期:2017-01-01 00:00:00
abstract::We aimed to evaluate the cardioprotective effect and mechanism of propofol in anthracycline-induced cardiomyocyte apoptosis. We selected the rat myocardial cell line, H9c2, and primary cardiomyocytes for in vitro study. The cardiomyocytes were treated with vehicle, Adriamycin® (ADM), propofol, or a combination of ADM ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/2109216
更新日期:2018-04-18 00:00:00
abstract:Purpose:Oxidative stress induced by reduced blood circulation is a critical pathological damage to retinal ganglion cells (RGCs) in glaucoma. We previously showed that green tea extract (GTE) and its catechin constituents alleviate sodium iodate-induced retinal degeneration in rats. Here, we investigated the therapeuti...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/8407206
更新日期:2019-07-09 00:00:00
abstract:BACKGROUND:The human Circadian Locomotor Output Cycle protein Kaput (CLOCK) gene was originally discovered as a regulator of essential human daily rhythms. This seemingly innocuous gene was then found to be associated with a multitude of human malignancies, via several biochemical pathways. We aimed to further investig...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2015/671839
更新日期:2015-01-01 00:00:00
abstract::OVE26 mice are a widely used transgenic model of early-onset type 1 diabetes. These mice overexpress calmodulin in their pancreatic β cells, develop severe diabetes within the first weeks of life, and progress to severe diabetic complications including diabetic nephropathy and diabetic cardiomyopathy (DCM). To date, d...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/6961348
更新日期:2020-05-14 00:00:00
abstract::[This corrects the article DOI: 10.1155/2017/3027109.]. ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 已发布勘误
doi:10.1155/2017/1083618
更新日期:2017-01-01 00:00:00