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Dupuy J, Fouché E, Noirot C, Martin P, Buisson C, Guéraud F, Pierre F, Héliès-Toussaint C. A dual model of normal vs isogenic Nrf2-depleted murine epithelial cells to explore oxidative stress involvement. Sci Rep 2024; 14:10905. [PMID: 38740939 DOI: 10.1038/s41598-024-60938-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
Cancer-derived cell lines are useful tools for studying cellular metabolism and xenobiotic toxicity, but they are not suitable for modeling the biological effects of food contaminants or natural biomolecules on healthy colonic epithelial cells in a normal genetic context. The toxicological properties of such compounds may rely on their oxidative properties. Therefore, it appears to be necessary to develop a dual-cell model in a normal genetic context that allows to define the importance of oxidative stress in the observed toxicity. Given that the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) is considered to be the master regulator of antioxidant defenses, our aim was to develop a cellular model comparing normal and Nrf2-depleted isogenic cells to qualify oxidative stress-related toxicity. We generated these cells by using the CRISPR/Cas9 technique. Whole-genome sequencing enabled us to confirm that our cell lines were free of cancer-related mutations. We used 4-hydroxy-2-nonenal (HNE), a lipid peroxidation product closely related to oxidative stress, as a model molecule. Here we report significant differences between the two cell lines in glutathione levels, gene regulation, and cell viability after HNE treatment. The results support the ability of our dual-cell model to study the role of oxidative stress in xenobiotic toxicity.
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Affiliation(s)
- Jacques Dupuy
- National Research Institute for Agriculture and Environment (INRAE), Toxalim (Research Centre in Food Toxicology), INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 180 Chemin de Tournefeuille, BP93173, 31027, Toulouse Cedex 3, France
| | - Edwin Fouché
- National Research Institute for Agriculture and Environment (INRAE), Toxalim (Research Centre in Food Toxicology), INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 180 Chemin de Tournefeuille, BP93173, 31027, Toulouse Cedex 3, France
| | - Céline Noirot
- National Research Institute for Agriculture and Environment (INRAE), Université Fédérale de Toulouse, INRAE, BioinfOmics, GenoToul Bioinformatics Facility, 31326, Castanet-Tolosan, France
| | - Pierre Martin
- National Research Institute for Agriculture and Environment (INRAE), Université Fédérale de Toulouse, INRAE, BioinfOmics, GenoToul Bioinformatics Facility, 31326, Castanet-Tolosan, France
| | - Charline Buisson
- National Research Institute for Agriculture and Environment (INRAE), Toxalim (Research Centre in Food Toxicology), INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 180 Chemin de Tournefeuille, BP93173, 31027, Toulouse Cedex 3, France
| | - Françoise Guéraud
- National Research Institute for Agriculture and Environment (INRAE), Toxalim (Research Centre in Food Toxicology), INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 180 Chemin de Tournefeuille, BP93173, 31027, Toulouse Cedex 3, France
| | - Fabrice Pierre
- National Research Institute for Agriculture and Environment (INRAE), Toxalim (Research Centre in Food Toxicology), INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 180 Chemin de Tournefeuille, BP93173, 31027, Toulouse Cedex 3, France
| | - Cécile Héliès-Toussaint
- National Research Institute for Agriculture and Environment (INRAE), Toxalim (Research Centre in Food Toxicology), INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 180 Chemin de Tournefeuille, BP93173, 31027, Toulouse Cedex 3, France.
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Singh G, Kesharwani P, Kumar Singh G, Kumar S, Putta A, Modi G. Ferroptosis and its modulators: A raising target for cancer and Alzheimer's disease. Bioorg Med Chem 2024; 98:117564. [PMID: 38171251 DOI: 10.1016/j.bmc.2023.117564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 12/01/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024]
Abstract
The process of ferroptosis, a recently identified form of regulated cell death (RCD) is associated with the overloading of iron species and lipid-derived ROS accumulation. Ferroptosis is induced by various mechanisms such as inhibiting system Xc, glutathione depletion, targeting excess iron, and directly inhibiting GPX4 enzyme. Also, ferroptosis inhibition is achieved by blocking excessive lipid peroxidation by targeting different pathways. These mechanisms are often related to the pathophysiology and pathogenesis of diseases like cancer and Alzheimer's. Fundamentally distinct from other forms of cell death, such as necrosis and apoptosis, ferroptosis differs in terms of biochemistry, functions, and morphology. The mechanism by which ferroptosis acts as a regulatory factor in many diseases remains elusive. Studying the activation and inhibition of ferroptosis as a means to mitigate the progression of various diseases is a highly intriguing and actively researched topic. It has emerged as a focal point in etiological research and treatment strategies. This review systematically summarizes the different mechanisms involved in the inhibition and induction of ferroptosis. We have extensively explored different agents that can induce or inhibit ferroptosis. This review offers current perspectives on recent developments in ferroptosis research, highlighting the disease's etiology and presenting references to enhance its understanding. It also explores new targets for the treatment of cancer and Alzheimer's disease.
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Affiliation(s)
- Gourav Singh
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Gireesh Kumar Singh
- Department of Pharmacy, School of Health Science, Central University of South Bihar Gaya, 824236, India
| | - Saroj Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Anjaneyulu Putta
- Department of Chemistry, University of South Dakota, Churchill Haines, Vermillion SD-57069, United States
| | - Gyan Modi
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
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Np S, Rajdev B, Jain S, Gangasani JK, Vaidya JR, Naidu V. Molecular dissection of anti-colon cancer activity of NARI-29: special focus on H 2O 2 modulated NF-κB and death receptor signaling. Free Radic Res 2023; 57:308-324. [PMID: 37523668 DOI: 10.1080/10715762.2023.2243029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 06/20/2023] [Accepted: 07/24/2023] [Indexed: 08/02/2023]
Abstract
Accumulating evidence attributes the role of aldose reductase (AR) in modulating ROS and inflammation which are the main factor responsible for cancer progression and drug resistance. Epalrestat is the only AR inhibitor being used in Asian countries. It did not make it to the markets of the USA and Europe due to marginal efficacy as an antioxidant and anti-inflammatory agent owing to difficulty reaching intracellular targets. In our previous studies, we attempted to synthesize the epalrestat analogs and reported that the compound 4-((Z)-5-((Z)-2-Cyano-3-phenylallylidene)-4-oxo-2-thioxothiazolidin-3-yl) benzoic acid named as NARI-29 has potent AR inhibition compared to epalrestat. In the current study, we aimed to find the effect of NARI-29 on ROS-induced cancer progression and TRAIL resistance in colon cancer in vitro models. In the first part of the study, we demonstrated that the NARI-29 has specific AKR1B1 inhibition and superior drug-like properties than epalrestat using bioinformatics tools. In the second part of the study, it was proven that NARI-29 has induced the hydrogen peroxide-triggered TRAIL-induced apoptosis in the colon cancer cells via modulating the AKR1B1/4HNE/FOXO3a/DR axis. The selective cytotoxicity of NARI-29 (10-fold) compared to epalrestat (4-fold) toward cancer cells is due to its differential ROS regulation and anti-inflammatory activities. Altogether, these data show that NARI-29 may be a potential candidate for AR inhibitors, which will be used to prevent colon cancer progression and as adjuvant therapy for preventing TRAIL resistance.
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Affiliation(s)
- Syamprasad Np
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Changsari, Assam, India
| | - Bishal Rajdev
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Changsari, Assam, India
| | - Siddhi Jain
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Changsari, Assam, India
| | - Jagadeesh Kumar Gangasani
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Changsari, Assam, India
| | - Jayathirtha Rao Vaidya
- Fluoro Agro Chemicals Department and AcSIR-Ghaziabad, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
| | - Vgm Naidu
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Changsari, Assam, India
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Syamprasad NP, Jain S, Rajdev B, Prasad N, Kallipalli R, Naidu VGM. Aldose reductase and cancer metabolism: The master regulator in the limelight. Biochem Pharmacol 2023; 211:115528. [PMID: 37011733 DOI: 10.1016/j.bcp.2023.115528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/25/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023]
Abstract
It is strongly established that metabolic reprogramming mediates the initiation, progression, and metastasis of a variety of cancers. However, there is no common biomarker identified to link the dysregulated metabolism and cancer progression. Recent studies strongly advise the involvement of aldose reductase (AR) in cancer metabolism. AR-mediated glucose metabolism creates a Warburg-like effect and an acidic tumour microenvironment in cancer cells. Moreover, AR overexpression is associated with the impairment of mitochondria and the accumulation of free fatty acids in cancer cells. Further, AR-mediated reduction of lipid aldehydes and chemotherapeutics are involved in the activation of factors promoting proliferation and chemo-resistance. In this review, we have delineated the possible mechanisms by which AR modulates cellular metabolism for cancer proliferation and survival. An in-depth understanding of cancer metabolism and the role of AR might lead to the use of AR inhibitors as metabolic modulating agents for the therapy of cancer.
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Affiliation(s)
- N P Syamprasad
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Assam 781101, India
| | - Siddhi Jain
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Assam 781101, India
| | - Bishal Rajdev
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Assam 781101, India
| | - Neethu Prasad
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Assam 781101, India
| | - Ravindra Kallipalli
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Assam 781101, India
| | - V G M Naidu
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Assam 781101, India.
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Importance of Heme Oxygenase-1 in Gastrointestinal Cancers: Functions, Inductions, Regulations, and Signaling. J Gastrointest Cancer 2021; 52:454-461. [PMID: 33484436 DOI: 10.1007/s12029-021-00587-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2021] [Indexed: 12/15/2022]
Abstract
INTRODUCTION : Colorectal cancer (CRC) is one of the important gastrointestinal tract tumors. Heme is mainly absorbed in the colon and induces nitrosamine formation, genotoxicity, and oxidative stress, and increases the risk of CRC. MATERIALS AND METHODS Information was collected from articles on Scopus, Google Scholar, and PubMed. RESULTS Heme can irritate intestinal epithelial cells and increases the proliferation of colonic mucosa. Heme can be considered as a carcinogenic agent for CRC induction. In typical situations, Heme Oxygenase-1 (HO-1) is expressed at low concentration in the gastrointestinal tract, but its expression is elevated during lesion and inflammation. Based on the multiple reports, the impact of HO-1 on tumor growth is related to the cancer cell type. Increased HO-1 levels were also indicated in different human and animal malignancies, possibly through its contribution to tumor cell growth, metastasis, expression of angiogenic factors, and resistance to chemotherapy. Recent studies noted that HO-1 can act as an immunomodulator that suppresses immune cell maturation, activation, and infiltration. It also inhibits apoptosis through CO production that leads to p53 suppression. The upregulation of HO-1 significantly increases the endurance of colon cancer cell lines. Therefore, it is supposed that HO-1 inhibitors could become a novel antitumor agent. Lactobacillus rhamnosus and its metabolites can activate Nrf2 and improves anti-oxidant levels along with upregulation of its objective genes like HO-1, and downregulation of NF-κB which reduce phosphorylated TNF-α, IL-1β, and PAI-1. CONCLUSION The precise mechanism accountable for the anti-inflammatory features of HO-1 is not completely understood; nevertheless, the CO signaling function associated with the antioxidant property shown by bilirubin possibly will play an act in the improvement of inflammation.
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UFBP1, a key component in ufmylation, enhances drug sensitivity by promoting proteasomal degradation of oxidative stress-response transcription factor Nrf2. Oncogene 2020; 40:647-662. [PMID: 33219317 DOI: 10.1038/s41388-020-01551-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 10/27/2020] [Accepted: 10/30/2020] [Indexed: 12/15/2022]
Abstract
The key component in the UFM1 conjugation system, UFM1-binding and PCI domain-containing protein 1 (UFBP1), regulates many biological processes. Recently it has been shown that low UFBP1 protein level is associated with the worse outcome of gastric cancer patients. However, how it responses to the sensitivity of gastric cancer to chemotherapy drugs and the underlying molecular mechanism remain elusive. Here, we discovered that high UFBP1 expression increases the progression-free survival of advanced gastric cancer patients treated with platinum-based chemotherapy. Cell-line based studies unveiled that UFBP1 expression enhances while UFBP1 knockdown attenuates the sensitivity of gastric cancer cells to cisplatin. High-throughput SILAC-based quantitative proteomic analysis revealed that the protein level of aldo-keto reductase 1Cs (AKR1Cs) is significantly downregulated by UFBP1. Flow cytometry analysis showed that UFBP1 expression increases while UFBP1 knockdown reduces reactive oxygen species upon cisplatin treatment. We further disclosed that UFBP1 attenuates the gene expression of AKR1Cs and the transcription activity of the master oxidative stress-response transcription factor Nrf2 (nuclear factor erythroid-2-related factor 2). Detailed mechanistic studies manifested that UFBP1 promotes the formation of K48-linked polyubiquitin chains on Nrf2 and thus augments its proteasome-mediated degradation. Experiments using genetic depletion and pharmacological activation in vitro and in vivo demonstrated that UFBP1 enhances the sensitivity of gastric cancer cells to cisplatin through the Nrf2/AKR1C axis. Overall, this work discovered a novel prognostic biomarker for gastric cancer patients treated with platinum-based chemotherapy and elucidated the underlying molecular mechanism, which may benefit to future personalized chemotherapy.
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Martín-Sierra C, Laranjeira P, Domingues MR, Paiva A. Lipoxidation and cancer immunity. Redox Biol 2019; 23:101103. [PMID: 30658904 PMCID: PMC6859558 DOI: 10.1016/j.redox.2019.101103] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/14/2018] [Accepted: 01/08/2019] [Indexed: 12/11/2022] Open
Abstract
Lipoxidation is a well-known reaction between electrophilic carbonyl species, formed during oxidation of lipids, and specific proteins that, in most cases, causes an alteration in proteins function. This can occur under physiological conditions but, in many cases, it has been associated to pathological process, including cancer. Lipoxidation may have an effect in cancer development through their effects in tumour cells, as well as through the alteration of immune components and the consequent modulation of the immune response. The formation of protein adducts affects different proteins in cancer, triggering different mechanism, such as proliferation, cell differentiation and apoptosis, among others, altering cancer progression. The divergent results obtained documented that the formation of lipoxidation adducts can have either anti-carcinogenic or pro-carcinogenic effects, depending on the cell type affected and the specific adduct formed. Moreover, lipoxidation adducts may alter the immune response, consequently causing either positive or negative alterations in cancer progression. Therefore, in this review, we summarize the effects of lipoxidation adducts in cancer cells and immune components and their consequences in the evolution of different types of cancer.
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Affiliation(s)
- C Martín-Sierra
- Unidade de Gestão Operacional em Citometria, Centro Hospitalar e Universitário de Coimbra (CHUC), Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - P Laranjeira
- Unidade de Gestão Operacional em Citometria, Centro Hospitalar e Universitário de Coimbra (CHUC), Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - M R Domingues
- Mass Spectrometry Centre, Department of Chemistry & QOPNA, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal; Department of Chemistry & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - A Paiva
- Unidade de Gestão Operacional em Citometria, Centro Hospitalar e Universitário de Coimbra (CHUC), Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Instituto Politécnico de Coimbra, ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, Portugal.
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Li C, Cheng L, Wu H, He P, Zhang Y, Yang Y, Chen J, Chen M. Activation of the KEAP1‑NRF2‑ARE signaling pathway reduces oxidative stress in Hep2 cells. Mol Med Rep 2018; 18:2541-2550. [PMID: 30015918 PMCID: PMC6102741 DOI: 10.3892/mmr.2018.9288] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 02/09/2018] [Indexed: 11/22/2022] Open
Abstract
At present there are no studies investigating the effects of the kelch-like ECH-associated protein 1 (KEAP1)-nuclear factor erythroid 2-related factor 2 (NRF2)-antioxidant response element (ARE) signaling pathway on Hep2 cell line. The present study aimed to investigate this topic through knockdown of the KEAP1 gene. A stable Hep2 cell line specifically silencing the human KEAP1 gene was initially constructed. Hydrogen peroxide (H2O2) was added to the culture medium at various concentrations for various durations to interact with the short hairpin (sh)KEAP1-transfected Hep2 cells. Subsequently, the gene and protein expression levels of KEAP1, NRF2, NAD(P)H quinone oxidoreductase1 (NQO1) and heme oxygenase 1 (HO1) in experimental and control cells were measured by reverse transcription-quantitative polymerase chain reaction and western blotting, respectively. Furthermore, the viability and apoptotic rate of the shKEAP1-transfected Hep2 cells were detected by a Cell Counting-Kit 8 assay and flow cytometry, respectively. In the shKEAP1 Hep2 cell line, the mRNA and protein expression levels of NRF2, NQO1 and HO1 were markedly higher compared with the scramble control-transfected Hep2 and parent Hep2 cell lines. Immunofluorescence staining indicated that NRF2 was primarily located in the cytoplasm of scHep2 and parent Hep2 cell lines, but was present in the nuclei and cytoplasm of the shKEAP1 Hep2 cell line, where it translocates into the nuclei in response to H2O2. Following knockdown of the KEAP1 gene Hep2 cells, the apoptosis rates were 31.8 and 45.3% in scHep2 cells at 0.1 and 0.25 mmol/l H2O2 respectively and 14.1 and 27.9% in shKEAP1 cells. The present study indicated that the KEAP1-NRF2-ARE signaling pathway may exhibit an antioxidative effect within Hep2 cells and may be used for clinical treatment of cancer.
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Affiliation(s)
- Changjiang Li
- Department of Otorhinolaryngology‑Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, Shanghai 200031, P.R. China
| | - Lei Cheng
- Department of Otorhinolaryngology‑Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, Shanghai 200031, P.R. China
| | - Haitao Wu
- Department of Otorhinolaryngology‑Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, Shanghai 200031, P.R. China
| | - Peijie He
- Department of Otorhinolaryngology‑Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, Shanghai 200031, P.R. China
| | - Yanping Zhang
- Department of Central Laboratory, Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai 200031, P.R. China
| | - Yue Yang
- Department of Otorhinolaryngology‑Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, Shanghai 200031, P.R. China
| | - Jian Chen
- Department of Otorhinolaryngology‑Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, Shanghai 200031, P.R. China
| | - Min Chen
- Department of Otorhinolaryngology‑Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Fudan University, Shanghai 200031, P.R. China
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Mol M, Regazzoni L, Altomare A, Degani G, Carini M, Vistoli G, Aldini G. Enzymatic and non-enzymatic detoxification of 4-hydroxynonenal: Methodological aspects and biological consequences. Free Radic Biol Med 2017; 111:328-344. [PMID: 28161307 DOI: 10.1016/j.freeradbiomed.2017.01.036] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/26/2017] [Accepted: 01/26/2017] [Indexed: 10/20/2022]
Abstract
4-Hydroxynonenal (HNE), an electrophilic end-product deriving from lipid peroxidation, undergoes a heterogeneous set of biotransformations including enzymatic and non-enzymatic reactions. The former mostly involve red-ox reactions on the HNE oxygenated functions (phase I metabolism) and GSH conjugations (phase II) while the latter are due to the HNE capacity to spontaneously condense with nucleophilic sites within endogenous molecules such as proteins, nucleic acids and phospholipids. The overall metabolic fate of HNE has recently attracted great interest not only because it clearly determines the HNE disposal, but especially because the generated metabolites and adducts are not inactive molecules (as initially believed) but show biological activities even more pronounced than those of the parent compound as exemplified by potent pro-inflammatory stimulus induced by GSH conjugates. Similarly, several studies revealed that the non-enzymatic reactions, initially considered as damaging processes randomly involving all endogenous nucleophilic reactants, are in fact quite selective in terms of both reactivity of the nucleophilic sites and stability of the generated adducts. Even though many formed adducts retain the expected toxic consequences, some adducts exhibit well-defined beneficial roles as documented by the protective effects of sublethal concentrations of HNE against toxic concentrations of HNE. Clearly, future investigations are required to gain a more detailed understanding of the metabolic fate of HNE as well as to identify novel targets involved in the biological activity of the HNE metabolites. These studies are and will be permitted by the continuous progress in the analytical methods for the identification and quantitation of novel HNE metabolites as well as for proteomic analyses able to offer a comprehensive picture of the HNE-induced adducted targets. On these grounds, the present review will focus on the major enzymatic and non-enzymatic HNE biotransformations discussing both the molecular mechanisms involved and the biological effects elicited. The review will also describe the most important analytical enhancements that have permitted the here discussed advancements in our understanding of the HNE metabolic fate and which will permit in a near future an even better knowledge of this enigmatic molecule.
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Affiliation(s)
- Marco Mol
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Luca Regazzoni
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Alessandra Altomare
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Genny Degani
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Marina Carini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Giulio Vistoli
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milan, Italy.
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Eckl PM, Bresgen N. Genotoxicity of lipid oxidation compounds. Free Radic Biol Med 2017; 111:244-252. [PMID: 28167130 DOI: 10.1016/j.freeradbiomed.2017.02.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/28/2017] [Accepted: 02/01/2017] [Indexed: 12/23/2022]
Abstract
Lipid peroxidation, the oxidative degradation of membrane lipids by reactive oxygen species generates a large variety of breakdown products such as alkanes, aldehydes, ketones, alcohols, furans and others. Due to their reactivity aldehydes (alkanals, 2-alkenals, 2,4-alkadienals, 4-hydroxyalkenals) received a lot of attention, in particular because they can diffuse from the site of formation and interact with proteins and nucleic acids thus acting as second toxic messengers. The major aldehydic peroxidation product of membrane lipids is 4-hydroxynonenal (HNE). Since HNE and other 4-hydroxyalkenals are strong alkylating agents they have therefore been considered to be the biologically most important peroxidation products. Although initially research focused on the toxicological potential of these compounds it is now well known that they play also a crucial role in cell signaling under physiological and pathophysiological conditions. Thus, it is obvious that the biological effects will be determined by the intracellular concentrations which can trigger adaptation, DNA damage and cell death. This review will not cover all these aspects but will concentrate on the genotoxic properties of selected lipid oxidation products important in the context of pathophysiological developments together with a chapter on epigenetic modifications.
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Affiliation(s)
- Peter M Eckl
- Department of Cell Biology and Physiology, University of Salzburg, Hellbrunnerstr. 34, A-5020 Salzburg, Austria.
| | - Nikolaus Bresgen
- Department of Cell Biology and Physiology, University of Salzburg, Hellbrunnerstr. 34, A-5020 Salzburg, Austria
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Gonzalez-Donquiles C, Alonso-Molero J, Fernandez-Villa T, Vilorio-Marqués L, Molina AJ, Martín V. The NRF2 transcription factor plays a dual role in colorectal cancer: A systematic review. PLoS One 2017; 12:e0177549. [PMID: 28542357 PMCID: PMC5436741 DOI: 10.1371/journal.pone.0177549] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 04/28/2017] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Colorectal cancer is one of the most common cancers worldwide, and is influenced by the interplay of various factors, including a very strong genetic component. For instance, incorrect mitochondrial biogenesis is correlated with increased risk of developing colorectal cancer. Thus, it is important to understand the consequences of changes in both the expression and the correct function of the transcription factors that regulate mitochondrial biogenesis, namely NRF2. OBJECTIVES The main objective of this paper is to characterise the relationship between NRF2 and colorectal cancer by compiling data from an exhaustive literature search. METHODS Information was obtained by defining specific search terms and searching in several databases. After a strict selection procedure, data were tabulated and the relationships between articles were assessed by measuring heterogeneity and by constructing conceptual maps. RESULTS AND DISCUSSION We found a general consensus in the literature that the presence of oxidizing agents as well as the inhibition of the NRF2 repressor Keap1 maintain NRF2 expression at basal levels. This predominantly exerts a cytoprotective effect on cells and decreases risk of colorectal cancer. However, if NRF2 is inhibited, protection against external agents disappears and risk of colorectal cancer increases. Interestingly, colorectal cancer risk is also increased when NRF2 becomes overexpressed. In this case, the increased risk arises from NRF2-induced inflammation and resistance to chemotherapy. CONCLUSION The proper basal function of NRF2 and Keap1 are essential for preventing oncogenic processes in the colon. Consequently, any disruption to the expression of these genes can promote the genesis and progression of colon cancer.
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Affiliation(s)
- C. Gonzalez-Donquiles
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Gene-Environment and Health Research Group, University of Leon, León, Spain
| | - J. Alonso-Molero
- Gene-Environment and Health Research Group, University of Leon, León, Spain
| | - T. Fernandez-Villa
- Gene-Environment and Health Research Group, University of Leon, León, Spain
| | - L. Vilorio-Marqués
- Gene-Environment and Health Research Group, University of Leon, León, Spain
| | - A. J. Molina
- Gene-Environment and Health Research Group, University of Leon, León, Spain
| | - V. Martín
- CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Gene-Environment and Health Research Group, University of Leon, León, Spain
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12
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Zatula A, Dikic A, Mulder C, Sharma A, Vågbø CB, Sousa MML, Waage A, Slupphaug G. Proteome alterations associated with transformation of multiple myeloma to secondary plasma cell leukemia. Oncotarget 2017; 8:19427-19442. [PMID: 28038447 PMCID: PMC5386695 DOI: 10.18632/oncotarget.14294] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 11/30/2016] [Indexed: 01/22/2023] Open
Abstract
Plasma cell leukemia is a rare and aggressive plasma cell neoplasm that may either originate de novo (primary PCL) or by leukemic transformation of multiple myeloma (MM) to secondary PCL (sPCL). The prognosis of sPCL is very poor, and currently no standard treatment is available due to lack of prospective clinical studies. In an attempt to elucidate factors contributing to transformation, we have performed super-SILAC quantitative proteome profiling of malignant plasma cells collected from the same patient at both the MM and sPCL stages of the disease. 795 proteins were found to be differentially expressed in the MM and sPCL samples. Gene ontology analysis indicated a metabolic shift towards aerobic glycolysis in sPCL as well as marked down-regulation of enzymes involved in glycan synthesis, potentially mediating altered glycosylation of surface receptors. There was no significant change in overall genomic 5-methylcytosine or 5-hydroxymethylcytosine at the two stages, indicating that epigenetic dysregulation was not a major driver of transformation to sPCL. The present study constitutes the first attempt to provide a comprehensive map of the altered protein expression profile accompanying transformation of MM to sPCL in a single patient, identifying several candidate proteins that can be targeted by currently available small molecule drugs. Our dataset furthermore constitutes a reference dataset for further proteomic analysis of sPCL transformation.
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Affiliation(s)
- Alexey Zatula
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Aida Dikic
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Celine Mulder
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.,Present address: University of Utrecht, Utrecht, Holland
| | - Animesh Sharma
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.,PROMEC Core Facility for Proteomics and Metabolomics, Norwegian University of Science and Technology, NTNU, Trondheim, and the Central Norway Regional Health Authority, Stjørdal, Norway
| | - Cathrine B Vågbø
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.,PROMEC Core Facility for Proteomics and Metabolomics, Norwegian University of Science and Technology, NTNU, Trondheim, and the Central Norway Regional Health Authority, Stjørdal, Norway
| | - Mirta M L Sousa
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Anders Waage
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.,Department of Hematology, Department of Medicine, St. Olav's Hospital, Trondheim, Norway
| | - Geir Slupphaug
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.,PROMEC Core Facility for Proteomics and Metabolomics, Norwegian University of Science and Technology, NTNU, Trondheim, and the Central Norway Regional Health Authority, Stjørdal, Norway
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13
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Chen X, Yang M, Hao W, Han J, Ma J, Wang C, Sun S, Zheng Q. Differentiation-inducing and anti-proliferative activities of isoliquiritigenin and all-trans-retinoic acid on B16F0 melanoma cells: Mechanisms profiling by RNA-seq. Gene 2016; 592:86-98. [PMID: 27461947 DOI: 10.1016/j.gene.2016.07.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 07/14/2016] [Accepted: 07/22/2016] [Indexed: 12/11/2022]
Abstract
Melanoma is a cancer that arises from melanocytes, specialized pigmented cells that are found predominantly in the skin. The incidence of malignant melanoma has significantly increased over the last decade. With the development of therapy, the survival rate of some kind of cancer has been improved greatly. But the treatment of melanoma remains unsatisfactory. Much of melanoma's resistance to traditional chemotherapy is believed to arise intrinsically, by virtue of potent growth and cell survival-promoting genetic alteration. Therefore, significant attention has recently been focused on differentiation therapy, as well as differentiation inducer compounds. In previous study, we found isoliquiritigenin (ISL), a natural product extracted from licorice, could induce B16F0 melanoma cell differentiation. Here we investigated the transcriptional response of melanoma differentiation process induced by ISL and all-trans-retinoic acid (RA). Results showed that 390 genes involves in 201 biochemical pathways were differentially expressed in ISL treatment and 304 genes in 193 pathways in RA treatment. Differential expressed genes (DGEs, fold-change (FC)≥10) with the function of anti-proliferative and differentiation inducing indicated a loss of grade malignancy characteristic. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated glutathione metabolism, glycolysis/gluconeogenesis and pentose phosphate pathway were the top three relative pathway perturbed by ISL, and mitogen-activated protein kinase (MAPK) signaling pathway was the most important pathway in RA treatment. In the analysis of hierarchical clustering of DEGs, we discovered 72 DEGs involved in the process of drug action. We thought Cited1, Tgm2, Xaf1, Cd59a, Fbxo2, Adh7 may have critical role in the differentiation of melanoma. The evidence displayed herein confirms the critical role of reactive oxygen species (ROS) in melanoma pathobiology and provides evidence for future targets in the development of next-generation biomarkers and therapeutics.
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Affiliation(s)
- Xiaoyu Chen
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ming Yang
- BGI-Tech, BGI-Shenzhen, Shenzhen, Guangdong 518083, China
| | - Wenjin Hao
- Binzhou Medical University, Yantai, Shandong 264003, China
| | - Jichun Han
- Binzhou Medical University, Yantai, Shandong 264003, China
| | - Jun Ma
- Binzhou Medical University, Yantai, Shandong 264003, China
| | - Caixia Wang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Shiguo Sun
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Qiusheng Zheng
- Binzhou Medical University, Yantai, Shandong 264003, China.
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14
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Schaur RJ, Siems W, Bresgen N, Eckl PM. 4-Hydroxy-nonenal-A Bioactive Lipid Peroxidation Product. Biomolecules 2015; 5:2247-337. [PMID: 26437435 PMCID: PMC4693237 DOI: 10.3390/biom5042247] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/24/2015] [Accepted: 07/29/2015] [Indexed: 12/23/2022] Open
Abstract
This review on recent research advances of the lipid peroxidation product 4-hydroxy-nonenal (HNE) has four major topics: I. the formation of HNE in various organs and tissues, II. the diverse biochemical reactions with Michael adduct formation as the most prominent one, III. the endogenous targets of HNE, primarily peptides and proteins (here the mechanisms of covalent adduct formation are described and the (patho-) physiological consequences discussed), and IV. the metabolism of HNE leading to a great number of degradation products, some of which are excreted in urine and may serve as non-invasive biomarkers of oxidative stress.
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Affiliation(s)
- Rudolf J Schaur
- Institute of Molecular Biosciences, University of Graz, Heinrichstrasse 33a, 8010 Graz, Austria.
| | - Werner Siems
- Institute for Medical Education, KortexMed GmbH, Hindenburgring 12a, 38667 Bad Harzburg, Germany.
| | - Nikolaus Bresgen
- Division of Genetics, Department of Cell Biology, University of Salzburg, Hellbrunnerstasse 34, 5020 Salzburg, Austria.
| | - Peter M Eckl
- Division of Genetics, Department of Cell Biology, University of Salzburg, Hellbrunnerstasse 34, 5020 Salzburg, Austria.
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15
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Barrera G, Pizzimenti S, Ciamporcero ES, Daga M, Ullio C, Arcaro A, Cetrangolo GP, Ferretti C, Dianzani C, Lepore A, Gentile F. Role of 4-hydroxynonenal-protein adducts in human diseases. Antioxid Redox Signal 2015; 22:1681-702. [PMID: 25365742 DOI: 10.1089/ars.2014.6166] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
SIGNIFICANCE Oxidative stress provokes the peroxidation of polyunsaturated fatty acids in cellular membranes, leading to the formation of aldheydes that, due to their high chemical reactivity, are considered to act as second messengers of oxidative stress. Among the aldehydes formed during lipid peroxidation (LPO), 4-hydroxy-2-nonenal (HNE) is produced at a high level and easily reacts with both low-molecular-weight compounds and macromolecules, such as proteins and DNA. In particular, HNE-protein adducts have been extensively investigated in diseases characterized by the pathogenic contribution of oxidative stress, such as cancer, neurodegenerative, chronic inflammatory, and autoimmune diseases. RECENT ADVANCES In this review, we describe and discuss recent insights regarding the role played by covalent adducts of HNE with proteins in the development and evolution of those among the earlier mentioned disease conditions in which the functional consequences of their formation have been characterized. CRITICAL ISSUES Results obtained in recent years have shown that the generation of HNE-protein adducts can play important pathogenic roles in several diseases. However, in some cases, the generation of HNE-protein adducts can represent a contrast to the progression of disease or can promote adaptive cell responses, demonstrating that HNE is not only a toxic product of LPO but also a regulatory molecule that is involved in several biochemical pathways. FUTURE DIRECTIONS In the next few years, the refinement of proteomical techniques, allowing the individuation of novel cellular targets of HNE, will lead to a better understanding the role of HNE in human diseases.
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Affiliation(s)
- Giuseppina Barrera
- 1Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Torino, Italy
| | - Stefania Pizzimenti
- 1Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Torino, Italy
| | | | - Martina Daga
- 1Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Torino, Italy
| | - Chiara Ullio
- 1Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Torino, Italy
| | - Alessia Arcaro
- 2Dipartimento di Medicina e Scienze della Salute, Università del Molise, Campobasso, Italy
| | | | - Carlo Ferretti
- 4Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Torino, Italy
| | - Chiara Dianzani
- 4Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Torino, Italy
| | - Alessio Lepore
- 5Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Napoli, Italy
| | - Fabrizio Gentile
- 2Dipartimento di Medicina e Scienze della Salute, Università del Molise, Campobasso, Italy
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16
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Abolaji AO, Kamdem JP, Lugokenski TH, Farombi EO, Souza DO, da Silva Loreto ÉL, Rocha JBT. Ovotoxicants 4-vinylcyclohexene 1,2-monoepoxide and 4-vinylcyclohexene diepoxide disrupt redox status and modify different electrophile sensitive target enzymes and genes in Drosophila melanogaster. Redox Biol 2015; 5:328-339. [PMID: 26117601 PMCID: PMC4491645 DOI: 10.1016/j.redox.2015.06.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 05/29/2015] [Accepted: 06/01/2015] [Indexed: 02/06/2023] Open
Abstract
The compounds 4-vinylcyclohexene 1,2-monoepoxide (VCM) and 4-Vinylcyclohexene diepoxide (VCD) are the two downstream metabolites of 4-vinylcyclohexene (VCH), an ovotoxic agent in mammals. In addition, VCM and VCD may be found as by-products of VCH oxidation in the environment. Recently, we reported the involvement of oxidative stress in the toxicity of VCH in Drosophila melanogaster. However, it was not possible to determine the individual contributions of VCM and VCD in VCH toxicity. Hence, we investigated the toxicity of VCM and VCD (10–1000 µM) in flies after 5 days of exposure via the diet. Our results indicated impairments in climbing behaviour and disruptions in antioxidant balance and redox status evidenced by an increase in DCFH oxidation, decreases in total thiol content and glutathione-S-transferase (GST) activity in the flies exposed to VCM and VCD (p<0.05). These effects were accompanied by disruptions in the transcription of the genes encoding the proteins superoxide dismutase (SOD1), kelch-like erythroid-derived cap-n-collar (CNC) homology (ECH)-associated protein 1 (Keap-1), mitogen activated protein kinase 2 (MAPK-2), catalase, Cyp18a1, JAFRAC 1 (thioredoxin peroxidase 1) and thioredoxin reductase 1 (TrxR-1) (p<0.05). VCM and VCD inhibited acetylcholinesterase (AChE) and delta aminolevulinic acid dehydratase (δ-ALA D) activities in the flies (p<0.05). Indeed, here, we demonstrated that different target enzymes and genes were modified by the electrophiles VCM and VCD in the flies. Thus, D. melanogaster has provided further lessons on the toxicity of VCM and VCD which suggest that the reported toxicity of VCH may be mediated by its transformation to VCM and VCD.
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Affiliation(s)
- Amos O Abolaji
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria; Departamento de Bioquimica e Biologia Molecular, Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.
| | - Jean P Kamdem
- Departamento de Bioquimica e Biologia Molecular, Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil; Departamento de Bioquímica, Instituto de Ciências Básica da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS CEP 90035-003, Brazil
| | | | - Ebenezer O Farombi
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Diogo O Souza
- Departamento de Bioquímica, Instituto de Ciências Básica da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS CEP 90035-003, Brazil
| | - Élgion L da Silva Loreto
- Laboratório de Biologia Molecular-LabDros, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - João B T Rocha
- Departamento de Bioquimica e Biologia Molecular, Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.
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17
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Youn P, Chen Y, Furgeson DY. Cytoprotection against beta-amyloid (Aβ) peptide-mediated oxidative damage and autophagy by Keap1 RNAi in human glioma U87mg cells. Neurosci Res 2015; 94:70-8. [PMID: 25612817 DOI: 10.1016/j.neures.2014.12.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/17/2014] [Accepted: 12/22/2014] [Indexed: 12/31/2022]
Abstract
Extensive oxidative stress has been considered a primary pathological factor for many neurodegenerative disorders (NDDs). We speculated that the oxidative damage to brain cells can be managed by promoting the endogenous cellular antioxidants through the RNA interference (RNAi) against Keap1 (kelch-like ECH-associated protein). Keap1 acts as a negative regulator of Nrf2 (NF-E2-related factor 2) that represses the activation of the antioxidant responsive element (ARE). Here, we investigated whether Keap1 knockdown enhances the cellular antioxidant capacity and provides the neuroprotection against oxidative stress from hydrogen peroxide and beta-amyloid (Aβ) peptide in U87mg cells. We found that the Keap1 siRNA pre-treated group displayed higher expression of diverse antioxidant genes and an increased antioxidant capacity compared to the control group. Moreover, the Keap1 RNAi exerted a cytoprotective effect against H2O2 treatment. In Aβ peptide treatment experiments, the Keap1 siRNA pre-treated groups maintained acceptable cell viability, relatively intact cellular morphology, and controlled oxidative damage levels while the control groups suffered from Aβ peptide-mediated neurotoxicity. Keap1 RNAi also attenuated the oxidative stress-mediated autophagy as well. These findings suggest that Keap1 RNAi can serve as a therapeutic strategy for relieving oxidative stress-associated symptoms in many NDDs.
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Affiliation(s)
- Pilju Youn
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, United States
| | - Yizhe Chen
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, United States
| | - Darin Y Furgeson
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, United States.
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18
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Chen H, Fu J, Chen H, Hu Y, Soroka DN, Prigge J, Schmidt EE, Yan F, Major MB, Chen X, Sang S. Ginger compound [6]-shogaol and its cysteine-conjugated metabolite (M2) activate Nrf2 in colon epithelial cells in vitro and in vivo. Chem Res Toxicol 2014; 27:1575-85. [PMID: 25148906 PMCID: PMC4176387 DOI: 10.1021/tx500211x] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Indexed: 12/20/2022]
Abstract
In this study, we identified Nrf2 as a molecular target of [6]-shogaol (6S), a bioactive compound isolated from ginger, in colon epithelial cells in vitro and in vivo. Following 6S treatment of HCT-116 cells, the intracellular GSH/GSSG ratio was initially diminished but was then elevated above the basal level. Intracellular reactive oxygen species (ROS) correlated inversely with the GSH/GSSG ratio. Further analysis using gene microarray showed that 6S upregulated the expression of Nrf2 target genes (AKR1B10, FTL, GGTLA4, and HMOX1) in HCT-116 cells. Western blotting confirmed upregulation, phosphorylation, and nuclear translocation of Nrf2 protein followed by Keap1 decrease and upregulation of Nrf2 target genes (AKR1B10, FTL, GGTLA4, HMOX1, and MT1) and glutathione synthesis genes (GCLC and GCLM). Pretreatment of cells with a specific inhibitor of p38 (SB202190), PI3K (LY294002), or MEK1 (PD098059) attenuated these effects of 6S. Using ultra-high-performance liquid chromatography-tandem mass spectrometry, we found that 6S modified multiple cysteine residues of Keap1 protein. In vivo 6S treatment induced Nrf2 nuclear translocation and significantly upregulated the expression of MT1, HMOX1, and GCLC in the colon of wild-type mice but not Nrf2(-/-) mice. Similar to 6S, a cysteine-conjugated metabolite of 6S (M2), which was previously found to be a carrier of 6S in vitro and in vivo, also activated Nrf2. Our data demonstrated that 6S and its cysteine-conjugated metabolite M2 activate Nrf2 in colon epithelial cells in vitro and in vivo through Keap1-dependent and -independent mechanisms.
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Affiliation(s)
- Huadong Chen
- Center
for Excellence in Post-Harvest Technologies, North Carolina Agricultural and Technical State University, North
Carolina Research Campus, 500 Laureate Way, Kannapolis, North Carolina 28081, United States
| | - Junsheng Fu
- Center
for Excellence in Post-Harvest Technologies, North Carolina Agricultural and Technical State University, North
Carolina Research Campus, 500 Laureate Way, Kannapolis, North Carolina 28081, United States
| | - Hao Chen
- Cancer
Research Program, Julius L. Chambers Biomedical/Biotechnology Research
Institute, North Carolina Central University, 700 George Street, Durham, North Carolina 27707, United States
| | - Yuhui Hu
- Cancer
Research Program, Julius L. Chambers Biomedical/Biotechnology Research
Institute, North Carolina Central University, 700 George Street, Durham, North Carolina 27707, United States
| | - Dominique N. Soroka
- Center
for Excellence in Post-Harvest Technologies, North Carolina Agricultural and Technical State University, North
Carolina Research Campus, 500 Laureate Way, Kannapolis, North Carolina 28081, United States
| | - Justin
R. Prigge
- Department
of Immunology and Infectious Diseases, Montana
State University, Bozeman, Montana 59717, United States
| | - Edward E. Schmidt
- Department
of Immunology and Infectious Diseases, Montana
State University, Bozeman, Montana 59717, United States
| | - Feng Yan
- Department
of Cell Biology and Physiology, University
of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Michael B. Major
- Department
of Cell Biology and Physiology, University
of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Xiaoxin Chen
- Cancer
Research Program, Julius L. Chambers Biomedical/Biotechnology Research
Institute, North Carolina Central University, 700 George Street, Durham, North Carolina 27707, United States
| | - Shengmin Sang
- Center
for Excellence in Post-Harvest Technologies, North Carolina Agricultural and Technical State University, North
Carolina Research Campus, 500 Laureate Way, Kannapolis, North Carolina 28081, United States
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19
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Dixon SJ, Patel DN, Welsch M, Skouta R, Lee ED, Hayano M, Thomas AG, Gleason CE, Tatonetti NP, Slusher BS, Stockwell BR. Pharmacological inhibition of cystine-glutamate exchange induces endoplasmic reticulum stress and ferroptosis. eLife 2014; 3:e02523. [PMID: 24844246 PMCID: PMC4054777 DOI: 10.7554/elife.02523] [Citation(s) in RCA: 1304] [Impact Index Per Article: 130.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 05/17/2014] [Indexed: 02/06/2023] Open
Abstract
Exchange of extracellular cystine for intracellular glutamate by the antiporter system xc (-) is implicated in numerous pathologies. Pharmacological agents that inhibit system xc (-) activity with high potency have long been sought, but have remained elusive. In this study, we report that the small molecule erastin is a potent, selective inhibitor of system xc (-). RNA sequencing revealed that inhibition of cystine-glutamate exchange leads to activation of an ER stress response and upregulation of CHAC1, providing a pharmacodynamic marker for system xc (-) inhibition. We also found that the clinically approved anti-cancer drug sorafenib, but not other kinase inhibitors, inhibits system xc (-) function and can trigger ER stress and ferroptosis. In an analysis of hospital records and adverse event reports, we found that patients treated with sorafenib exhibited unique metabolic and phenotypic alterations compared to patients treated with other kinase-inhibiting drugs. Finally, using a genetic approach, we identified new genes dramatically upregulated in cells resistant to ferroptosis.DOI: http://dx.doi.org/10.7554/eLife.02523.001.
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Affiliation(s)
- Scott J Dixon
- Department of Biological Sciences, Columbia University, New York, United States
| | - Darpan N Patel
- Department of Biological Sciences, Columbia University, New York, United States
| | - Matthew Welsch
- Department of Biological Sciences, Columbia University, New York, United States
| | - Rachid Skouta
- Department of Biological Sciences, Columbia University, New York, United States
| | - Eric D Lee
- Department of Biological Sciences, Columbia University, New York, United States
| | - Miki Hayano
- Department of Biological Sciences, Columbia University, New York, United States
| | - Ajit G Thomas
- Brain Science Institute, Johns Hopkins Medicine, Baltimore, United States
| | - Caroline E Gleason
- Department of Biological Sciences, Columbia University, New York, United States
| | - Nicholas P Tatonetti
- Department of Biomedical Informatics, Columbia University, New York, United States Department of Medicine, Columbia University, New York, United States Department of Systems Biology, Columbia University, New York, United States
| | - Barbara S Slusher
- Brain Science Institute, Johns Hopkins Medicine, Baltimore, United States Department of Neurology, Johns Hopkins Medicine, Baltimore, United States
| | - Brent R Stockwell
- Department of Biological Sciences, Columbia University, New York, United States Department of Systems Biology, Columbia University, New York, United States Department of Chemistry, Columbia University, New York, United States Howard Hughes Medical Institute, Columbia University, New York, United States
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