Abstract:
:We recently showed that activated Ras proteins are localized to the plasma membrane and in the nucleus in wild-type cells growing exponentially on glucose, while in the hxk2Δ strain they accumulated mainly in mitochondria. An aberrant accumulation of activated Ras in these organelles was previously reported and correlated to mitochondrial dysfunction, accumulation of ROS, and cell death. Here we show that addition of acetic acid to wild-type cells results in a rapid recruitment of Ras-GTP from the nucleus and the plasma membrane to the mitochondria, providing a further proof that Ras proteins might be involved in programmed cell death. Moreover, we show that Hxk2 protects against apoptosis in S. cerevisiae. In particular, cells lacking HXK2 and showing a constitutive accumulation of activated Ras at the mitochondria are more sensitive to acetic-acid-induced programmed cell death compared to the wild type strain. Indeed, deletion of HXK2 causes an increase of apoptotic cells with several morphological and biochemical changes that are typical of apoptosis, including DNA fragmentation, externalization of phosphatidylserine, and ROS production. Finally, our results suggest that apoptosis induced by lack of Hxk2 may not require the activation of Yca1, the metacaspase homologue identified in yeast.
journal_name
Oxid Med Cell Longevjournal_title
Oxidative medicine and cellular longevityauthors
Amigoni L,Martegani E,Colombo Sdoi
10.1155/2013/678473subject
Has Abstractpub_date
2013-01-01 00:00:00pages
678473eissn
1942-0900issn
1942-0994journal_volume
2013pub_type
杂志文章abstract::There are several oxidative stress-related pathways interconnecting Alzheimer's disease and type II diabetes, two public health problems worldwide. Coincidences are so compelling that it is attractive to speculate they are the same disorder. However, some pathological mechanisms as observed in diabetes are not necessa...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2015/985845
更新日期:2015-01-01 00:00:00
abstract::The present study was to investigate whether sulforaphane (SFN) can prevent diabetic nephropathy in type 1 diabetic mouse model induced by multiple low-dose streptozotocin. Diabetic and age-matched control mice were given SFN at 0.5 mg/kg body weight daily for 3 months. At the end of 3-month SFN treatment, the diabeti...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2012/821936
更新日期:2012-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2016/6714686
更新日期:2016-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2017/4590127
更新日期:2017-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2015/658264
更新日期:2015-01-01 00:00:00
abstract::Methionine sulfoxide reductase B1 (MsrB1) is a member of the selenoprotein family, which contributes to the reduction of methionine sulfoxides produced from reactive oxygen species (ROS) by redox processes in energy pathways. However, few studies have examined the role of MsrB1 in human hepatocellular carcinoma (HCC)....
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/5287971
更新日期:2018-05-10 00:00:00
abstract::Mitochondrial dysfunction is associated with macrophage damage, but the role of mitochondrial fission in macrophage cholesterol metabolism is not fully understood. In this study, we explored the influences of miR-9 and mitochondrial fission on macrophage viability and cholesterol metabolism. Macrophages were incubated...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/8848930
更新日期:2020-11-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2012/718976
更新日期:2012-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/2497845
更新日期:2020-07-30 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2018/5123147
更新日期:2018-12-10 00:00:00
abstract::Due to the high biotolerance, favourable mechanical properties, and osseointegration ability, titanium is the basic biomaterial used in maxillofacial surgery. The passive layer of titanium dioxide on the surface of the implant effectively provides anticorrosive properties, but it can be damaged, resulting in the relea...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/3714725
更新日期:2018-06-14 00:00:00
abstract::The generation of reactive oxygen and nitrogen species (RONS) has been found to occur during inflammatory procedures, during cell ischemia, and in various crucial developmental processes such as cell differentiation and along cell signaling pathways. The most common sources of intracellular RONS are the mitochondrial ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2017/7542540
更新日期:2017-01-01 00:00:00
abstract::Haptoglobin (Hp) is a plasma protein involved in clearing extracellular haemoglobin and regulating inflammation; it exists as two genetic variants (Hp1 and Hp2). In a meta-analysis of six published studies, we confirm that Hp genotype affects short-term outcome (cerebral vasospasm and/or delayed cerebral ischemia) aft...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,meta分析
doi:10.1155/2017/6747940
更新日期:2017-01-01 00:00:00
abstract::We examined in vitro antioxidant capacity of polyphenolic extract obtained from the wood of oak Quercus robur (QR), Robuvit, using TEAC (Trolox equivalent antioxidant capacity) method and the effect of its intake on markers of oxidative stress, activity of antioxidant enzymes, and total antioxidant capacity in plasma ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2014/639868
更新日期:2014-01-01 00:00:00
abstract::Chronic unpredictable mild stress (CUMS) induces hippocampal oxidative stress. H2S functions as a neuroprotectant against oxidative stress in brain. We have previously shown the upregulatory effect of H2S on BDNF protein expression in the hippocampus of rats. Therefore, we hypothesized that H2S prevents CUMS-generated...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/2153745
更新日期:2016-01-01 00:00:00
abstract::Choroidal neovascularization (CNV) is a sight-threatening disease and is characterized by the formation of pathological neovascularization in the choroid which extends into the subretinal space. Exudative age-related macular degeneration (AMD) is the formation of CNV in the macular area which leads to irreversible bli...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2020/8941057
更新日期:2020-03-06 00:00:00
abstract:Background:Mitochondrial dynamics (mtDYN) has been proposed as a bridge between mitochondrial dysfunction and insulin resistance (IR), which is involved in the pathogenesis of type 2 diabetes (T2D). Our previous study has identified that mitochondrial DNA (mtDNA) haplogroup B4 is a T2D-susceptible genotype. Using trans...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/7514383
更新日期:2018-09-30 00:00:00
abstract::Mutations of mtDNA, due to their higher frequency of occurrence compared to nuclear DNA mutations, are the most promising biomarkers for assessing predisposition of the occurrence and development of atherogenesis. The aim of the present article was an analysis of correlation of several mitochondrial genome mutations w...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/6934394
更新日期:2017-01-01 00:00:00
abstract::Although hyperuricemia is shown to accelerate chronic kidney disease, the mechanisms remain unclear. Accumulating studies also indicate that uric acid has both pro- and antioxidant properties. We postulated that hyperuricemia impairs the function of glomerular podocytes, resulting in albuminuria. Hyperuricemic model w...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/3759153
更新日期:2017-01-01 00:00:00
abstract::Hemoglobin (Hb) is a family of proteins in red blood cells responsible for oxygen transport and vulnerable for oxidative damage. Hemoglobin δ subunit (HBD), a member of Hb family, is normally expressed by cells of erythroid lineage. Expression of Hb genes has been previously reported in nonerythroid and hematopoietic ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/7295319
更新日期:2017-01-01 00:00:00
abstract::Background. Rutin is a natural nutraceutical that is a promising compound for the prevention of UV-induced metabolic changes in skin cells. The aim of this study was to examine the effects of rutin on redox and endocannabinoid systems, as well as proinflammatory and proapoptotic processes, in UV-irradiated fibroblasts...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/4721352
更新日期:2017-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/9358080
更新日期:2020-01-24 00:00:00
abstract::Methanol extracts of Momordica charantia L. fruits are extensively studied for their antiaging activities. A new cucurbitane-type triterpenoid (1) and nine other known compounds (2-10) were isolated, and their structures were determined according to their spectroscopic characteristics and chemical derivatization. Biol...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/1538632
更新日期:2018-03-25 00:00:00
abstract::Mitochondria are dynamic ATP-generating organelle which contribute to many cellular functions including bioenergetics processes, intracellular calcium regulation, alteration of reduction-oxidation potential of cells, free radical scavenging, and activation of caspase mediated cell death. Mitochondrial functions can be...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2014/780179
更新日期:2014-01-01 00:00:00
abstract::Although a growing body of evidence suggests that plant polyphenols can modulate human immune responses, their simultaneous action on monocyte and neutrophil oxidative burst is currently poorly understood. Based on the hypothesis that various polyphenols contained in plant extracts might affect the oxidative burst of ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2014/764367
更新日期:2014-01-01 00:00:00
abstract::The clinical and experimental postcardiac arrest treatment has not reached therapeutic success. The present study investigated the effect of PD98059 (PD) in rats subjected to cardiac arrest (CA)/cardiopulmonary resuscitation (CPR). Experimental rats were divided randomly into 3 groups: sham, CA, and PD. The rats excep...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/3723762
更新日期:2016-01-01 00:00:00
abstract::There are a great number of reports with assertions that oxidative stress is produced by organophosphorus compound (OPC) poisoning and is a cofactor of mortality and morbidity in OPC toxicity. In addition, antioxidants have been suggested as adjuncts to standard therapy. However, there is no substantial evidence for t...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2015/329306
更新日期:2015-01-01 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::Alzheimer's disease (AD) is a neurodegenerative disorder characterised by impairments in the cognitive domains associated with orientation, recording, and memory. This pathology results from an abnormal deposition of the β-amyloid (Aβ) peptide and the intracellular accumulation of neurofibrillary tangles. Mitochondria...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2019/8409329
更新日期:2019-11-30 00:00:00