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Selleghin-Veiga G, Magpali L, Picorelli A, Silva FA, Ramos E, Nery MF. Breathing Air and Living Underwater: Molecular Evolution of Genes Related to Antioxidant Response in Cetaceans and Pinnipeds. J Mol Evol 2024; 92:300-316. [PMID: 38735005 DOI: 10.1007/s00239-024-10170-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 04/05/2024] [Indexed: 05/13/2024]
Abstract
Cetaceans and pinnipeds are lineages of mammals that have independently returned to the aquatic environment, acquiring varying degrees of dependence on it while sharing adaptations for underwater living. Here, we focused on one critical adaptation from both groups, their ability to withstand the ischemia and reperfusion experienced during apnea diving, which can lead to the production of reactive oxygen species (ROS) and subsequent oxidative damage. Previous studies have shown that cetaceans and pinnipeds possess efficient antioxidant enzymes that protect against ROS. In this study, we investigated the molecular evolution of key antioxidant enzyme genes (CAT, GPX3, GSR, PRDX1, PRDX3, and SOD1) and the ROS-producing gene XDH, in cetaceans and pinnipeds lineages. We used the ratio of non-synonymous (dN) to synonymous (dS) substitutions as a measure to identify signatures of adaptive molecular evolution in these genes within and between the two lineages. Additionally, we performed protein modeling and variant impact analyzes to assess the functional consequences of observed mutations. Our findings revealed distinct selective regimes between aquatic and terrestrial mammals in five of the examined genes, including divergences within cetacean and pinniped lineages, between ancestral and recent lineages and between crowns groups. We identified specific sites under positive selection unique to Cetacea and Pinnipedia, with one site showing evidence of convergent evolution in species known for their long and deep-diving capacities. Notably, many sites under adaptive selection exhibited radical changes in amino acid properties, with some being damaging mutations in human variations, but with no apparent detrimental impacts on aquatic mammals. In conclusion, our study provides insights into the adaptive changes that have occurred in the antioxidant systems of aquatic mammals throughout their evolutionary history. We observed both distinctive features within each group of Cetacea and Pinnipedia and instances of convergence. These findings highlight the dynamic nature of the antioxidant system in response to challenges of the aquatic environment and provide a foundation for further investigations into the molecular mechanisms underlying these adaptations.
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Affiliation(s)
- Giovanna Selleghin-Veiga
- Laboratório de Genômica Evolutiva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil.
| | - Letícia Magpali
- Laboratório de Genômica Evolutiva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | - Agnello Picorelli
- Laboratório de Genômica Evolutiva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
| | - Felipe A Silva
- Laboratório de Genômica Evolutiva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
| | - Elisa Ramos
- Laboratório de Genômica Evolutiva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
- Zoological Institute, Department of Environmental Sciences, University of Basel, Basel, Switzerland
| | - Mariana F Nery
- Laboratório de Genômica Evolutiva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil.
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Zhao Z, Cai Z, Zhang S, Yin X, Jiang T, Shen C, Yin Y, Sun H, Chen Z, Han J, Zhang B. Activation of the FOXM1/ASF1B/PRDX3 axis confers hyperproliferative and antioxidative stress reactivity to gastric cancer. Cancer Lett 2024; 589:216796. [PMID: 38537775 DOI: 10.1016/j.canlet.2024.216796] [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: 10/03/2023] [Revised: 02/02/2024] [Accepted: 03/04/2024] [Indexed: 04/07/2024]
Abstract
Nucleosome assembly during DNA replication is dependent on histone chaperones. Recent studies suggest that dysregulated histone chaperones contribute to cancer progression, including gastric cancer (GC). Further studies are required to explore the prognostic and therapeutic implications of histone chaperones and their mechanisms of action in GC progression. Here we identified histone chaperone ASF1B as a potential biomarker for GC proliferation and prognosis. ASF1B was significantly upregulated in GC, which was associated with poor prognosis. In vitro and in vivo experiments demonstrated that the inhibition of ASF1B suppressed the malignant characteristics of GC, while overexpression of ASF1B had the opposite effect. Mechanistically, transcription factor FOXM1 directly bound to the ASF1B-promoter region, thereby regulating its transcription. Treatment with thiostrepton, a FOXM1 inhibitor, not only suppressed ASF1B expression, but also inhibited GC progression. Furthermore, ASF1B regulated the mitochondrial protein peroxiredoxin 3 (PRDX3) transcription in a FOXM1-dependent manner. The crucial role of ASF1B-regulated PRDX3 in GC cell proliferation and oxidative stress balance was also elucidated. In summary, our study suggests that the FOXM1-ASF1B-PRDX3 axis is a potential therapeutic target for treating GC.
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Affiliation(s)
- Zhou Zhao
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China; Gastrointestinal Cancer Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Zhaolun Cai
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China
| | - Su Zhang
- State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaonan Yin
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China
| | - Tianxiang Jiang
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China
| | - Chaoyong Shen
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China
| | - Yuan Yin
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China
| | - Hao Sun
- Gastrointestinal Cancer Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Zhixin Chen
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China
| | - Junhong Han
- State Key Laboratory of Biotherapy and Cancer Center, and Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China.
| | - Bo Zhang
- Gastric Cancer Center, Department of General Surgery, Research Laboratory of Tumor Epigenetics and Genomics, West China Hospital, Sichuan University, Chengdu, China.
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Sun N, Chen Y, Lu L, Yan H, Zhou J, Li K, Zhang W, Yuan L, Heng BC, Zeng W, Shi Y, Tong G, Yin P. Peptidomic analysis of follicular fluid in patients with polycystic ovarian syndrome. Front Cell Dev Biol 2023; 11:1289063. [PMID: 38020909 PMCID: PMC10666747 DOI: 10.3389/fcell.2023.1289063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023] Open
Abstract
Objective: The aim of this study was to analyze and compare the differential expression of peptides within the follicular fluid of polycystic ovary syndrome (PCOS) patients versus normal women by using peptidomics techniques. The underlying mechanisms involved in PCOS pathogenesis will be explored, together with screening and identification of potential functional peptides via bioinformatics analysis. Materials and methods: A total of 12 patients who underwent in vitro fertilization and embryo transfer (IVF-ET) at the Reproductive Medicine Center of Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine from 1 September 2022 to 1 November 2022 were included in this study. The follicular fluid of PCOS patients (n = 6) and normal women (n = 6) were collected. The presence and concentration differences of various peptides were detected by the LC-MS/MS method. GO and KEGG analysis were performed on the precursor proteins of the differentially-expressed peptides, and protein network interaction analysis was carried out to identify functionally-relevant peptides among the various peptides. Results: A variety of peptides within the follicular fluid of PCOS versus normal patients were detected by peptidomics techniques. Altogether, 843 upregulated peptides and 236 downregulated peptides were detected (absolute fold change ≥2 and p < 0.05). Of these, 718 (718 = 488 + 230) peptides were only detected in the PCOS group, while 205 (205 = 174 + 31) were only detected in the control group. Gene Ontology enrichment and pathway analysis were performed to characterize peptides through their precursor proteins. We identified 18 peptides from 7 precursor proteins associated with PCOS, and 4 peptide sequences were located in the functional domains of their corresponding precursor proteins. Conclusion: In this study, differences in the follicular development of PCOS versus normal patients were revealed from the polypeptidomics of follicular development, which thus provided new insights for future studies on the pathological mechanisms of PCOS development.
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Affiliation(s)
- Ningyu Sun
- Department of Reproductive Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yuanyuan Chen
- Department of Reproductive Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lu Lu
- Department of Reproductive Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Yan
- Department of Reproductive Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing Zhou
- Department of Gynecology of Traditional Chinese Medicine, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Kai Li
- Department of Reproductive Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wuwen Zhang
- Department of Reproductive Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lihua Yuan
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Boon Chin Heng
- School of Stomatology, Peking University, Beijing, China
| | - Weiwei Zeng
- Department of Gynecology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yin Shi
- Key Laboratory of Acupuncture and Immunological Effects, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Guoqing Tong
- Department of Reproductive Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Ping Yin
- Department of Reproductive Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Piñeyro MD, Chiribao ML, Arias DG, Robello C, Parodi-Talice A. Overoxidation and Oligomerization of Trypanosoma cruzi Cytosolic and Mitochondrial Peroxiredoxins. Pathogens 2023; 12:1273. [PMID: 37887789 PMCID: PMC10610341 DOI: 10.3390/pathogens12101273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023] Open
Abstract
Peroxiredoxins (Prxs) have been shown to be important enzymes for trypanosomatids, counteracting oxidative stress and promoting cell infection and intracellular survival. In this work, we investigate the in vitro sensitivity to overoxidation and the overoxidation dynamics of Trypanosoma cruzi Prxs in parasites in culture and in the infection context. We showed that recombinant m-TXNPx, in contrast to what was observed for c-TXNPx, exists as low molecular mass forms in the overoxidized state. We observed that T. cruzi Prxs were overoxidized in epimastigotes treated with oxidants, and a significant proportion of the overoxidized forms were still present at least 24 h after treatment suggesting that these forms are not actively reversed. In in vitro infection experiments, we observed that Prxs are overoxidized in amastigotes residing in infected macrophages, demonstrating that inactivation of at least part of the Prxs by overoxidation occurs in a physiological context. We have shown that m-TXNPx has a redox-state-dependent chaperone activity. This function may be related to the increased thermotolerance observed in m-TXNPx-overexpressing parasites. This study suggests that despite the similarity between protozoan and mammalian Prxs, T. cruzi Prxs have different oligomerization dynamics and sensitivities to overoxidation, which may have implications for their function in the parasite life cycle and infection process.
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Affiliation(s)
- María Dolores Piñeyro
- Laboratorio de Interacciones Hospedero Patógeno, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (M.D.P.); (M.L.C.); (C.R.)
- Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo 11800, Uruguay
| | - María Laura Chiribao
- Laboratorio de Interacciones Hospedero Patógeno, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (M.D.P.); (M.L.C.); (C.R.)
- Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo 11800, Uruguay
| | - Diego G. Arias
- Laboratorio de Enzimología Molecular, Instituto de Agrobiotecnología del Litoral, UNL-CONICET, Santa Fe 3000, Argentina;
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe 3000, Argentina
| | - Carlos Robello
- Laboratorio de Interacciones Hospedero Patógeno, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (M.D.P.); (M.L.C.); (C.R.)
- Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo 11800, Uruguay
| | - Adriana Parodi-Talice
- Laboratorio de Interacciones Hospedero Patógeno, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (M.D.P.); (M.L.C.); (C.R.)
- Sección Genética Evolutiva, Instituto de Biología, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, Uruguay
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Li H, Wang Z, Xie X, Luo M, Shen H, Li X, Li H, Wang Z, Li X, Chen G. Peroxiredoxin-3 plays a neuroprotective role in early brain injury after experimental subarachnoid hemorrhage in rats. Brain Res Bull 2023; 193:95-105. [PMID: 36566946 DOI: 10.1016/j.brainresbull.2022.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/05/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Subarachnoid hemorrhage (SAH), a type of hemorrhagic stroke, is a neurological emergency associated with a high morbidity and mortality rate. After SAH, early brain injury (EBI) is the leading cause of poor prognosis in SAH patients. Peroxiredoxins (PRDXs) are a family of sulphhydryl-dependent peroxidases. Peroxiredoxin-3 (PRDX3) is mainly located in the mitochondria of neurons, which can remove hydrogen peroxide (H2O2); however, the effect of PRDX3 on EBI after SAH remains unclear. In this study, an endovascular perforation model was used to mimic SAH in Sprague Dawley rats in vivo. The results revealed that after SAH, PRDX3 levels decreased in the neurons. PRDX3 overexpression by neuron-specific adeno-associated viruses upregulated PRDX3 levels. Furthermore, PRDX3 overexpression improved long- and short-term behavioral outcomes and alleviated neuronal impairment in rats. Nissl staining revealed that the upregulation of PRDX3 promoted cortical neuron survival. PRDX3 overexpression decreased the H2O2 content and downregulated caspase-9 expression. In conclusion, PRDX3 participates in neuronal protection by inhibiting the neuronal mitochondria-mediated death pathway; PRDX3 may be an important target for EBI intervention after SAH.
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Affiliation(s)
- Haibo Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Zongqi Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Xueshun Xie
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Muyun Luo
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China; Department of Neurosurgery, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou 341000, China.
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Xiangdong Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, China; Institute of Stroke Research, Soochow University, Suzhou 215006, China.
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NEK6 Regulates Redox Balance and DNA Damage Response in DU-145 Prostate Cancer Cells. Cells 2023; 12:cells12020256. [PMID: 36672191 PMCID: PMC9856815 DOI: 10.3390/cells12020256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/08/2022] [Accepted: 12/22/2022] [Indexed: 01/10/2023] Open
Abstract
NEK6 is a central kinase in developing castration-resistant prostate cancer (CRPC). However, the pathways regulated by NEK6 in CRPC are still unclear. Cancer cells have high reactive oxygen species (ROS) levels and easily adapt to this circumstance and avoid cell death by increasing antioxidant defenses. We knocked out the NEK6 gene and evaluated the redox state and DNA damage response in DU-145 cells. The knockout of NEK6 decreases the clonogenic capacity, proliferation, cell viability, and mitochondrial activity. Targeting the NEK6 gene increases the level of intracellular ROS; decreases the expression of antioxidant defenses (SOD1, SOD2, and PRDX3); increases JNK phosphorylation, a stress-responsive kinase; and increases DNA damage markers (p-ATM and γH2AX). The exogenous overexpression of NEK6 also increases the expression of these same antioxidant defenses and decreases γH2AX. The depletion of NEK6 also induces cell death by apoptosis and reduces the antiapoptotic Bcl-2 protein. NEK6-lacking cells have more sensitivity to cisplatin. Additionally, NEK6 regulates the nuclear localization of NF-κB2, suggesting NEK6 may regulate NF-κB2 activity. Therefore, NEK6 alters the redox balance, regulates the expression of antioxidant proteins and DNA damage, and its absence induces the death of DU-145 cells. NEK6 inhibition may be a new strategy for CRPC therapy.
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Selenocysteine Machinery Primarily Supports TXNRD1 and GPX4 Functions and Together They Are Functionally Linked with SCD and PRDX6. Biomolecules 2022; 12:biom12081049. [PMID: 36008942 PMCID: PMC9405853 DOI: 10.3390/biom12081049] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 01/23/2023] Open
Abstract
The human genome has 25 genes coding for selenocysteine (Sec)-containing proteins, whose synthesis is supported by specialized Sec machinery proteins. Here, we carried out an analysis of the co-essentiality network to identify functional partners of selenoproteins and Sec machinery. One outstanding cluster included all seven known Sec machinery proteins and two critical selenoproteins, GPX4 and TXNRD1. Additionally, these nine genes were further positively associated with PRDX6 and negatively with SCD, linking the latter two genes to the essential role of selenium. We analyzed the essentiality scores of gene knockouts in this cluster across one thousand cancer cell lines and found that Sec metabolism genes are strongly selective for a subset of primary tissues, suggesting that certain cancer cell lineages are particularly dependent on selenium. A separate outstanding cluster included selenophosphate synthetase SEPHS1, which was linked to a group of transcription factors, whereas the remaining selenoproteins were linked neither to these clusters nor among themselves. The data suggest that key components of Sec machinery have already been identified and that their primary role is to support the functions of GPX4 and TXNRD1, with further functional links to PRDX6 and SCD.
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Osca-Verdegal R, Beltrán-García J, Górriz JL, Martínez Jabaloyas JM, Pallardó FV, García-Giménez JL. Use of Circular RNAs in Diagnosis, Prognosis and Therapeutics of Renal Cell Carcinoma. Front Cell Dev Biol 2022; 10:879814. [PMID: 35813211 PMCID: PMC9257016 DOI: 10.3389/fcell.2022.879814] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/31/2022] [Indexed: 12/12/2022] Open
Abstract
Renal cell carcinoma is the most common type of kidney cancer, representing 90% of kidney cancer diagnoses, and the deadliest urological cancer. While the incidence and mortality rates by renal cell carcinoma are higher in men compared to women, in both sexes the clinical characteristics are the same, and usually unspecific, thereby hindering and delaying the diagnostic process and increasing the metastatic potential. Regarding treatment, surgical resection remains the main therapeutic strategy. However, even after radical nephrectomy, metastasis may still occur in some patients, with most metastatic renal cell carcinomas being resistant to chemotherapy and radiotherapy. Therefore, the identification of new biomarkers to help clinicians in the early detection, and treatment of renal cell carcinoma is essential. In this review, we describe circRNAs related to renal cell carcinoma processes reported to date and propose the use of some in therapeutic strategies for renal cell carcinoma treatment.
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Affiliation(s)
- Rebeca Osca-Verdegal
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Jesús Beltrán-García
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
| | - José Luis Górriz
- Department of Nephrology, University Clinic Hospital, INCLIVA, University of Valencia, Valencia, Spain
| | | | - Federico V. Pallardó
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
| | - José Luis García-Giménez
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
- EpiDisease S.L. (Spin-Off CIBER-ISCIII), Parc Científic de la Universitat de València, Valencia, Spain
- *Correspondence: José Luis García-Giménez,
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The Intestinal Redox System and Its Significance in Chemotherapy-Induced Intestinal Mucositis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:7255497. [PMID: 35585883 PMCID: PMC9110227 DOI: 10.1155/2022/7255497] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/04/2022] [Accepted: 04/09/2022] [Indexed: 12/12/2022]
Abstract
Chemotherapy-induced intestinal mucositis (CIM) is a significant dose-limiting adverse reaction brought on by the cancer treatment. Multiple studies reported that reactive oxygen species (ROS) is rapidly produced during the initial stages of chemotherapy, when the drugs elicit direct damage to intestinal mucosal cells, which, in turn, results in necrosis, mitochondrial dysfunction, and ROS production. However, the mechanism behind the intestinal redox system-based induction of intestinal mucosal injury and necrosis of CIM is still undetermined. In this article, we summarized relevant information regarding the intestinal redox system, including the composition and regulation of redox enzymes, ROS generation, and its regulation in the intestine. We innovatively proposed the intestinal redox “Tai Chi” theory and revealed its significance in the pathogenesis of CIM. We also conducted an extensive review of the English language-based literatures involving oxidative stress (OS) and its involvement in the pathological mechanisms of CIM. From the date of inception till July 31, 2021, 51 related articles were selected. Based on our analysis of these articles, only five chemotherapeutic drugs, namely, MTX, 5-FU, cisplatin, CPT-11, and oxaliplatin were shown to trigger the ROS-based pathological mechanisms of CIM. We also discussed the redox system-mediated modulation of CIM pathogenesis via elaboration of the relationship between chemotherapeutic drugs and the redox system. It is our belief that this overview of the intestinal redox system and its role in CIM pathogenesis will greatly enhance research direction and improve CIM management in the future.
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Villar SF, Dalla-Rizza J, Möller MN, Ferrer-Sueta G, Malacrida L, Jameson DM, Denicola A. Fluorescence Lifetime Phasor Analysis of the Decamer-Dimer Equilibrium of Human Peroxiredoxin 1. Int J Mol Sci 2022; 23:5260. [PMID: 35563654 PMCID: PMC9100220 DOI: 10.3390/ijms23095260] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 11/22/2022] Open
Abstract
Protein self-assembly is a common feature in biology and is often required for a myriad of fundamental processes, such as enzyme activity, signal transduction, and transport of solutes across membranes, among others. There are several techniques to find and assess homo-oligomer formation in proteins. Naturally, all these methods have their limitations, meaning that at least two or more different approaches are needed to characterize a case study. Herein, we present a new method to study protein associations using intrinsic fluorescence lifetime with phasors. In this case, the method is applied to determine the equilibrium dissociation constant (KD) of human peroxiredoxin 1 (hPrx1), an efficient cysteine-dependent peroxidase, that has a quaternary structure comprised of five head-to-tail homodimers non-covalently arranged in a decamer. The hPrx1 oligomeric state not only affects its activity but also its association with other proteins. The excited state lifetime of hPrx1 has distinct values at high and low concentrations, suggesting the presence of two different species. Phasor analysis of hPrx1 emission lifetime allowed for the identification and quantification of hPrx1 decamers, dimers, and their mixture at diverse protein concentrations. Using phasor algebra, we calculated the fraction of hPrx1 decamers at different concentrations and obtained KD (1.1 × 10-24 M4) and C0.5 (1.36 μM) values for the decamer-dimer equilibrium. The results were validated and compared with size exclusion chromatography. In addition, spectral phasors provided similar results despite the small differences in emission spectra as a function of hPrx1 concentration. The phasor approach was shown to be a highly sensitive and quantitative method to assess protein oligomerization and an attractive addition to the biophysicist's toolkit.
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Affiliation(s)
- Sebastián F. Villar
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (S.F.V.); (J.D.-R.); (M.N.M.); (G.F.-S.)
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo 11800, Uruguay
| | - Joaquín Dalla-Rizza
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (S.F.V.); (J.D.-R.); (M.N.M.); (G.F.-S.)
| | - Matías N. Möller
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (S.F.V.); (J.D.-R.); (M.N.M.); (G.F.-S.)
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo 11800, Uruguay
| | - Gerardo Ferrer-Sueta
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (S.F.V.); (J.D.-R.); (M.N.M.); (G.F.-S.)
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo 11800, Uruguay
| | - Leonel Malacrida
- Advanced Bioimaging Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay;
- Departamento de Fisiopatología, Hospital de Clínicas, Universidad de la República, Montevideo 11600, Uruguay
| | - David M. Jameson
- Department of Cell and Molecular Biology, University of Hawaii at Manoa, Honolulu, HI 96822, USA
| | - Ana Denicola
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (S.F.V.); (J.D.-R.); (M.N.M.); (G.F.-S.)
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo 11800, Uruguay
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11
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Bernett J, Krupke D, Sadegh S, Baumbach J, Fekete SP, Kacprowski T, List M, Blumenthal DB. Robust disease module mining via enumeration of diverse prize-collecting Steiner trees. Bioinformatics 2022; 38:1600-1606. [PMID: 34984440 DOI: 10.1093/bioinformatics/btab876] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/29/2021] [Accepted: 12/31/2021] [Indexed: 02/03/2023] Open
Abstract
MOTIVATION Disease module mining methods (DMMMs) extract subgraphs that constitute candidate disease mechanisms from molecular interaction networks such as protein-protein interaction (PPI) networks. Irrespective of the employed models, DMMMs typically include non-robust steps in their workflows, i.e. the computed subnetworks vary when running the DMMMs multiple times on equivalent input. This lack of robustness has a negative effect on the trustworthiness of the obtained subnetworks and is hence detrimental for the widespread adoption of DMMMs in the biomedical sciences. RESULTS To overcome this problem, we present a new DMMM called ROBUST (robust disease module mining via enumeration of diverse prize-collecting Steiner trees). In a large-scale empirical evaluation, we show that ROBUST outperforms competing methods in terms of robustness, scalability and, in most settings, functional relevance of the produced modules, measured via KEGG (Kyoto Encyclopedia of Genes and Genomes) gene set enrichment scores and overlap with DisGeNET disease genes. AVAILABILITY AND IMPLEMENTATION A Python 3 implementation and scripts to reproduce the results reported in this article are available on GitHub: https://github.com/bionetslab/robust, https://github.com/bionetslab/robust-eval. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Judith Bernett
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Dominik Krupke
- Department of Computer Science, TU Braunschweig, 38106 Braunschweig, Germany
| | - Sepideh Sadegh
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany.,Institute for Computational Systems Biology, University of Hamburg, 22607 Hamburg, Germany
| | - Jan Baumbach
- Institute for Computational Systems Biology, University of Hamburg, 22607 Hamburg, Germany.,Department of Mathematics and Computer Science, University of Southern Denmark, 5230 Odense, Denmark
| | - Sándor P Fekete
- Department of Computer Science, TU Braunschweig, 38106 Braunschweig, Germany.,Braunschweig Integrated Centre of Systems Biology (BRICS), 38106 Braunschweig, Germany
| | - Tim Kacprowski
- Braunschweig Integrated Centre of Systems Biology (BRICS), 38106 Braunschweig, Germany.,Division Data Science in Biomedicine, Peter L. Reichertz Institute for Medical Informatics, Technical University of Braunschweig and Hannover Medical School, 38106 Braunschweig, Germany
| | - Markus List
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany
| | - David B Blumenthal
- Department Artificial Intelligence in Biomedical Engineering (AIBE), Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91052 Erlangen, Germany
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12
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Dissecting the molecular mechanisms of mitochondrial import and maturation of peroxiredoxins from yeast and mammalian cells. Biophys Rev 2022; 13:983-994. [PMID: 35059022 DOI: 10.1007/s12551-021-00899-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/01/2021] [Indexed: 12/26/2022] Open
Abstract
Peroxiredoxins (Prxs) are cysteine-based peroxidases that play a central role in keeping the H2O2 at physiological levels. Eukaryotic cells express different Prxs isoforms, which differ in their subcellular locations and substrate specificities. Mitochondrial Prxs are synthesized in the cytosol as precursor proteins containing N-terminal cleavable presequences that act as mitochondrial targeting signals. Due to the fact that presequence controls the import of the vast majority of mitochondrial matrix proteins, the mitochondrial Prxs were initially predicted to be localized exclusively in the matrix. However, recent studies showed that mitochondrial Prxs are also targeted to the intermembrane space by mechanisms that remain poorly understood. While in yeast the IMP complex can translocate Prx1 to the intermembrane space, the maturation of yeast Prx1 and mammalian Prdx3 and Prdx5 in the matrix has been associated with sequential cleavages of the presequence by MPP and Oct1/MIP proteases. In this review, we describe the state of the art of the molecular mechanisms that control the mitochondrial import and maturation of Prxs of yeast and human cells. Once mitochondria are considered the major intracellular source of H2O2, understanding the mitochondrial Prx biogenesis pathways is essential to increase our knowledge about the H2O2-dependent cellular signaling, which is relevant to the pathophysiology of some human diseases.
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13
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Geng Y, Wang Y, Sun R, Kang X, Zhao H, Zhu M, Sun Y, Hu Y, Wang Z, Tian X, Zhao Y, Yao J. Carnosol alleviates nonalcoholic fatty liver disease by inhibiting mitochondrial dysfunction and apoptosis through targeting of PRDX3. Toxicol Appl Pharmacol 2021; 432:115758. [PMID: 34678374 DOI: 10.1016/j.taap.2021.115758] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 09/15/2021] [Accepted: 10/16/2021] [Indexed: 12/19/2022]
Abstract
Mitochondrial dysfunction is a major factor in nonalcoholic fatty liver disease (NAFLD), preceding insulin resistance and hepatic steatosis. Carnosol (CAR) is a kind of diterpenoid with antioxidant, anti-inflammatory and antitumor activities. Peroxiredoxin 3 (PRDX3), a mitochondrial H2O2-eliminating enzyme, undergoes overoxidation and subsequent inactivation under oxidative stress. The purpose of this study was to investigate the protective effect of the natural phenolic compound CAR on NAFLD via PRDX3. Mice fed a high-fat diet (HFD) and AML-12 cells treated with palmitic acid (PA) were used to detect the molecular mechanism of CAR in NAFLD. We found that pharmacological treatment with CAR notably moderated HFD- and PA- induced steatosis and liver injury, as shown by biochemical assays, Oil Red O and Nile Red staining. Further mechanistic investigations revealed that CAR exerted anti-NAFLD effects by inhibiting mitochondrial oxidative stress, perturbation of mitochondrial dynamics, and apoptosis in vivo and in vitro. The decreased protein and mRNA levels of PRDX3 were accompanied by intense oxidative stress after PA intervention. Interestingly, CAR specifically bound PRDX3, as shown by molecular docking assays, and increased the expression of PRDX3. However, the hepatoprotection of CAR in NAFLD was largely abolished by specific PRDX3 siRNA, which increased mitochondrial dysfunction and exacerbated apoptosis in vitro. In conclusion, CAR suppressed lipid accumulation, mitochondrial dysfunction and hepatocyte apoptosis by activating PRDX3, mitigating the progression of NAFLD, and thus, CAR may represent a promising candidate for clinical treatment of steatosis.
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Affiliation(s)
- Yunfei Geng
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Yue Wang
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Ruimin Sun
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Xiaohui Kang
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Huanyu Zhao
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Meiyang Zhu
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Yu Sun
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Yan Hu
- Department of Pharmacy, The Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Zhecheng Wang
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Xiaofeng Tian
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Yan Zhao
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China.
| | - Jihong Yao
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China.
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14
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Hernández-Fernández J, Pinzón Velasco AM, López Barrera EA, Rodríguez Becerra MDP, Villanueva-Cañas JL, Alba MM, Mariño Ramírez L. De novo assembly and functional annotation of blood transcriptome of loggerhead turtle, and in silico characterization of peroxiredoxins and thioredoxins. PeerJ 2021; 9:e12395. [PMID: 34820176 PMCID: PMC8606161 DOI: 10.7717/peerj.12395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 10/06/2021] [Indexed: 12/21/2022] Open
Abstract
The aim of this study was to generate and analyze the atlas of the loggerhead turtle blood transcriptome by RNA-seq, as well as identify and characterize thioredoxin (Tnxs) and peroxiredoxin (Prdxs) antioxidant enzymes of the greatest interest in the control of peroxide levels and other biological functions. The transcriptome of loggerhead turtle was sequenced using the Illumina Hiseq 2000 platform and de novo assembly was performed using the Trinity pipeline. The assembly comprised 515,597 contigs with an N50 of 2,631 bp. Contigs were analyzed with CD-Hit obtaining 374,545 unigenes, of which 165,676 had ORFs encoding putative proteins longer than 100 amino acids. A total of 52,147 (31.5%) of these transcripts had significant homology matches in at least one of the five databases used. From the enrichment of GO terms, 180 proteins with antioxidant activity were identified, among these 28 Prdxs and 50 putative Tnxs. The putative proteins of loggerhead turtles encoded by the genes Prdx1, Prdx3, Prdx5, Prdx6, Txn and Txnip were predicted and characterized in silico. When comparing Prdxs and Txns of loggerhead turtle with homologous human proteins, they showed 18 (9%), 52 (18%) 94 (43%), 36 (16%), 35 (33%) and 74 (19%) amino acid mutations respectively. However, they showed high conservation in active sites and structural motifs (98%), with few specific modifications. Of these, Prdx1, Prdx3, Prdx5, Prdx6, Txn and Txnip presented 0, 25, 18, three, six and two deleterious changes. This study provides a high quality blood transcriptome and functional annotation of loggerhead sea turtles.
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Affiliation(s)
- Javier Hernández-Fernández
- Department of Natural and Environmental Sciences, Faculty of Science and Engineering, Genetics, Molecular Biology and Bioinformatic Research Group-GENBIMOL, Universidad Jorge Tadeo Lozano, Bogotá, D.C., Colombia.,Faculty of Sciences, Department of Biology, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | | | - Ellie Anne López Barrera
- Institute of Environmental Studies and Services. IDEASA Research Group-IDEASA, Sergio Arboleda University, Bogotá, D.C., Colombia
| | - María Del Pilar Rodríguez Becerra
- Department of Natural and Environmental Sciences, Faculty of Science and Engineering, Genetics, Molecular Biology and Bioinformatic Research Group-GENBIMOL, Universidad Jorge Tadeo Lozano, Bogotá, D.C., Colombia
| | | | - M Mar Alba
- Evolutionary Genomics Group, Research Program on Biomedical Informatics (GRIB), Hospital del Mar Research Institute (IMIM), Universitat Pompeu Fabra, Barcelona, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
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15
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Luo T, Pueyo JM, Wahni K, Yvanoff C, Lazar T, Pyr Dit Ruys S, Vertommen D, Ezeriņa D, Messens J. Thiol-disulphide independent in-cell trapping for the identification of peroxiredoxin 2 interactors. Redox Biol 2021; 46:102066. [PMID: 34340028 PMCID: PMC8346688 DOI: 10.1016/j.redox.2021.102066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 10/28/2022] Open
Abstract
Hydrogen peroxide (H2O2) acts as a signalling molecule by oxidising cysteine thiols in proteins. Recent evidence has established a role for cytosolic peroxiredoxins in transmitting H2O2-based oxidation to a multitude of target proteins. Moreover, it is becoming clear that peroxiredoxins fulfil their function in organised microdomains, where not all interactors are covalently bound. However, most studies aimed at identifying peroxiredoxin interactors were based on methods that only detect covalently linked partners. Here, we explore the applicability of two thiol-disulphide independent in-cell trapping methodological approaches in combination with mass spectrometry for the identification of interaction partners of peroxiredoxin 2 (Prdx2). The first is biotin-dependent proximity-labelling (BioID) with a biotin ligase A (BirA*)-fused Prdx2, which has never been applied on redox-active proteins. The second is crosslinker co-immunoprecipitation with an N-terminally His-tagged Prdx2. During the initial characterisation of the tagged Prdx2 constructs, we found that the His-tag, but not BirA*, compromises the peroxidase and signalling activities of Prdx2. Further, the Prdx2 interactors identified with each approach showed little overlap. We therefore concluded that BioID is a more reliable method than crosslinker co-immunoprecipitation. After a stringent mass spec data filtering, BioID identified 13 interactors under elevated H2O2 conditions, including subunit five of the COP9 signalosome complex (CSN5). The Prdx2:CSN5 interaction was further confirmed in a proximity ligation assay. Taken together, our results demonstrate that BioID can be used as a method for the identification of interactors of Prdxs, and that caution should be exercised when interpreting protein-protein interaction results using tagged Prdxs.
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Affiliation(s)
- Ting Luo
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie, B-1050, Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050, Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050, Brussels, Belgium
| | - Julia Malo Pueyo
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie, B-1050, Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050, Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050, Brussels, Belgium
| | - Khadija Wahni
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie, B-1050, Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050, Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050, Brussels, Belgium
| | - Charlotte Yvanoff
- Structural Biology Brussels, Vrije Universiteit Brussel, B-1050, Brussels, Belgium; International Joint Research Group VUB-EPFL NanoBiotechnology & NanoMedicine (NANO), Vrije Universiteit Brussel, Brussels, Belgium and Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tamas Lazar
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie, B-1050, Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050, Brussels, Belgium
| | | | - Didier Vertommen
- de Duve Institute, Université Catholique de Louvain, 1200, Brussels, Belgium
| | - Daria Ezeriņa
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie, B-1050, Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050, Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050, Brussels, Belgium.
| | - Joris Messens
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie, B-1050, Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050, Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050, Brussels, Belgium.
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16
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Li Y, Yu XJ, Xiao T, Chi HL, Zhu GQ, Kang YM. Nrf1 Knock-Down in the Hypothalamic Paraventricular Nucleus Alleviates Hypertension Through Intervention of Superoxide Production-Removal Balance and Mitochondrial Function. Cardiovasc Toxicol 2021; 21:472-489. [PMID: 33582931 DOI: 10.1007/s12012-021-09641-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 01/28/2021] [Indexed: 12/19/2022]
Abstract
Oxidative stress in the hypothalamic paraventricular nucleus (PVN) contributes greatly to the development of hypertension. The recombinant nuclear respiratory factor 1 (Nrf1) regulates the transcription of several genes related to mitochondrial respiratory chain function or antioxidant expression, and thus may be involved in the pathogenesis of hypertension. Here we show that in the two-kidney, one-clip (2K1C) hypertensive rats the transcription level of Nrf1 was elevated comparing to the normotensive controls. Knocking down of Nrf1 in the PVN of 2K1C rats can significantly reduce their blood pressure and level of plasma norepinephrine (NE). Analysis revealed significant reduction of superoxide production level in both whole cell and mitochondria, along with up-regulation of superoxide dismutase 1 (Cu/Zn-SOD), NAD(P)H: quinone oxidoreductase 1 (NQO1), thioredoxin-dependent peroxiredoxin 3 (Prdx3), cytochrome c (Cyt-c) and glutathione synthesis rate-limiting enzyme (glutamyl-cysteine ligase catalytic subunit (Gclc) and modifier subunit (Gclm)), and down-regulation of cytochrome c oxidase subunit VI c (Cox6c) transcription after Nrf1 knock-down. In addition, the reduced ATP production and elevated mitochondrial membrane potential in the PVN of 2K1C rats were reinstated with Nrf1 knock-down, together with restored expression of peroxisome proliferator-activated receptor-γ coactivator 1α (PGC-1α), mitochondrial transcription factor A (Tfam), coiled-coil myosin-like BCL2-interacting protein (Beclin1), and Mitofusin 1 (Mfn1), which are related to the mitochondrial biogenesis, fusion, and autophagy. Together, the results indicate that the PVN Nrf1 is associated with the development of 2K1C-induced hypertension, and Nrf1 knock-down in the PVN can alleviate hypertension through intervention of mitochondrial function and restorement of the production-removal balance of superoxide.
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Affiliation(s)
- Ying Li
- Key Laboratory of Environment and Genes Related To Diseases of Education Ministry of China, Department of Physiology and Pathophysiology, Shaanxi Engineering and Research Center of Vaccine, Xi'an Jiaotong University School of Basic Medical Sciences, Xi'an, 710061, China
| | - Xiao-Jing Yu
- Key Laboratory of Environment and Genes Related To Diseases of Education Ministry of China, Department of Physiology and Pathophysiology, Shaanxi Engineering and Research Center of Vaccine, Xi'an Jiaotong University School of Basic Medical Sciences, Xi'an, 710061, China
| | - Tong Xiao
- Key Laboratory of Environment and Genes Related To Diseases of Education Ministry of China, Department of Physiology and Pathophysiology, Shaanxi Engineering and Research Center of Vaccine, Xi'an Jiaotong University School of Basic Medical Sciences, Xi'an, 710061, China
| | - Hong-Li Chi
- Key Laboratory of Environment and Genes Related To Diseases of Education Ministry of China, Department of Physiology and Pathophysiology, Shaanxi Engineering and Research Center of Vaccine, Xi'an Jiaotong University School of Basic Medical Sciences, Xi'an, 710061, China
| | - Guo-Qing Zhu
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing, 210029, China
| | - Yu-Ming Kang
- Key Laboratory of Environment and Genes Related To Diseases of Education Ministry of China, Department of Physiology and Pathophysiology, Shaanxi Engineering and Research Center of Vaccine, Xi'an Jiaotong University School of Basic Medical Sciences, Xi'an, 710061, China.
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17
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A Proteomic Study for the Discovery of Beef Tenderness Biomarkers and Prediction of Warner-Bratzler Shear Force Measured on Longissimus thoracis Muscles of Young Limousin-Sired Bulls. Foods 2021; 10:foods10050952. [PMID: 33925360 PMCID: PMC8145402 DOI: 10.3390/foods10050952] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 12/14/2022] Open
Abstract
Beef tenderness is of central importance in determining consumers’ overall liking. To better understand the underlying mechanisms of tenderness and be able to predict it, this study aimed to apply a proteomics approach on the Longissimus thoracis (LT) muscle of young Limousin-sired bulls to identify candidate protein biomarkers. A total of 34 proteins showed differential abundance between the tender and tough groups. These proteins belong to biological pathways related to muscle structure, energy metabolism, heat shock proteins, response to oxidative stress, and apoptosis. Twenty-three putative protein biomarkers or their isoforms had previously been identified as beef tenderness biomarkers, while eleven were novel. Using regression analysis to predict shear force values, MYOZ3 (Myozenin 3), BIN1 (Bridging Integrator-1), and OGN (Mimecan) were the major proteins retained in the regression model, together explaining 79% of the variability. The results of this study confirmed the existing knowledge but also offered new insights enriching the previous biomarkers of tenderness proposed for Longissimus muscle.
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18
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Andújar-Vera F, García-Fontana C, Lozano-Alonso S, González-Salvatierra S, Iglesias-Baena I, Muñoz-Torres M, García-Fontana B. Association between oxidative-stress-related markers and calcified femoral artery in type 2 diabetes patients. J Pharm Biomed Anal 2020; 190:113535. [PMID: 32858413 DOI: 10.1016/j.jpba.2020.113535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 08/01/2020] [Accepted: 08/03/2020] [Indexed: 11/17/2022]
Abstract
Currently, there are not many in-depth studies focusing on the protein analysis of antioxidants involved in the calcification of the femoral artery. In this context, this study aimed to increase the knowledge of the molecular redox mechanisms involved in this process. Samples from calcified femoral artery sections of seven patients diagnosed with type 2 diabetes (T2D) and critical ischemia were analyzed. The isolated proteins were identified using liquid chromatography and mass-mass spectrometry and were used to generate a protein-protein interaction (PPI) network. Subsequently, highly interconnected regions within the PPI network were identified to obtain a representative module linked to oxidative stress. The proteins of this module with a higher degree of centrality (hubs) were selected to validate them by datamining, transcriptomic and proteomic assays. The analysis of modules of the femoral PPI network showed a module with mainly antioxidant function in which superoxide dismutase 2 (SOD2) was reported as the most important hub. SOD2 was validated at transcriptomic and proteomic level and confirmed by datamining. These results indicate that SOD activity is highly linked to the atherosclerotic process. We suggest that SOD2 could be a potential therapeutic target to prevent the calcification of the femoral artery. The maintenance of optimal SOD2 levels and its cofactors could be used as a preventive strategy for vascular calcification and the related cardiovascular complications in T2D patients.
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Affiliation(s)
- Francisco Andújar-Vera
- Instituto De Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain; Fundación para la Investigación Biosanitaria de Andalucía Oriental (FIBAO), Avda. de Madrid 15, 18012 Granada, Spain.
| | - Cristina García-Fontana
- Instituto De Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain; Fundación para la Investigación Biosanitaria de Andalucía Oriental (FIBAO), Avda. de Madrid 15, 18012 Granada, Spain.
| | - Silvia Lozano-Alonso
- Instituto De Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain; Angiology and Vascular Surgery Unit, Universitary San Cecilio Hospital, Avda. del conocimiento s/n, 18016 Granada, Spain.
| | - Sheila González-Salvatierra
- Instituto De Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain; Fundación para la Investigación Biosanitaria de Andalucía Oriental (FIBAO), Avda. de Madrid 15, 18012 Granada, Spain; Department of Medicine, University of Granada, Avda. de la investigación 11, 18016 Granada, Spain.
| | | | - Manuel Muñoz-Torres
- Instituto De Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain; Department of Medicine, University of Granada, Avda. de la investigación 11, 18016 Granada, Spain; Endocrinology and Nutrition Unit, Universitary San Cecilio Hospital, Avda. del conocimiento s/n, 18016 Granada, Spain; CIBERFES, Instituto de Salud Carlos III, Avda. Monforte de Lemos 3-5, 28029 Madrid, Spain.
| | - Beatriz García-Fontana
- Instituto De Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain; CIBERFES, Instituto de Salud Carlos III, Avda. Monforte de Lemos 3-5, 28029 Madrid, Spain.
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19
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Li M, Wang J, Xu W, Wang Y, Zhang M, Wang M. Crystal structure of
Akkermansia muciniphila
peroxiredoxin reveals a novel regulatory mechanism of typical 2‐Cys Prxs by a distinct loop. FEBS Lett 2020; 594:1550-1563. [DOI: 10.1002/1873-3468.13753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/12/2020] [Accepted: 01/17/2020] [Indexed: 01/05/2023]
Affiliation(s)
- Mengyu Li
- School of Life Sciences Anhui University Hefei China
| | - Junchao Wang
- School of Life Sciences Anhui University Hefei China
- Institutes of Physical Science and Information Technology Anhui University Hefei China
- Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes Anhui University Hefei China
| | - Wenjuan Xu
- School of Life Sciences Anhui University Hefei China
| | - Yongzhong Wang
- School of Life Sciences Anhui University Hefei China
- Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes Anhui University Hefei China
| | - Min Zhang
- School of Life Sciences Anhui University Hefei China
- Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes Anhui University Hefei China
| | - Mingzhu Wang
- School of Life Sciences Anhui University Hefei China
- Institutes of Physical Science and Information Technology Anhui University Hefei China
- Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes Anhui University Hefei China
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20
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Padayachee L, Rohwer JM, Pillay CS. The thioredoxin redox potential and redox charge are surrogate measures for flux in the thioredoxin system. Arch Biochem Biophys 2019; 680:108231. [PMID: 31877266 DOI: 10.1016/j.abb.2019.108231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 12/19/2019] [Indexed: 11/19/2022]
Abstract
The thioredoxin system plays a central role in intracellular redox regulation and its dysregulation is associated with a number of pathologies. However, the connectivity within this system poses a significant challenge for quantification and consequently several disparate measures have been used to characterize the system. For in vitro studies, the thioredoxin system flux has been measured by NADPH oxidation while the thioredoxin redox state has been used to estimate the activity of the system in vivo. The connection between these measures has been obscure although substrate saturation in the thioredoxin system results from the saturation of the thioredoxin redox cycle. We used computational modeling and in vitro kinetic assays to clarify the relationship between flux and the current in vivo measures of the thioredoxin system together with a novel measure, the thioredoxin redox charge (reduced thioredoxin/total thioredoxin). Our results revealed that the thioredoxin redox potential and redox charge closely tracked flux perturbations showing that these indices could be used as surrogate measures of the flux in vivo and, provide a mechanistic explanation for the previously observed correlations between thioredoxin oxidation and certain pathologies. While we found no significant difference in the linear correlations obtained for the thioredoxin redox potential and redox charge with the flux, the redox charge may be preferred because it is bounded between zero and one and can be determined over a wider range of conditions allowing for quantitative flux comparisons between cell types and conditions.
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Affiliation(s)
- Letrisha Padayachee
- School of Life Sciences, University of KwaZulu-Natal, Scottsville, South Africa.
| | - Johann M Rohwer
- Laboratory for Molecular Systems Biology, Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa.
| | - Ché S Pillay
- School of Life Sciences, University of KwaZulu-Natal, Scottsville, South Africa.
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21
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Oligomerization dynamics and functionality of Trypanosoma cruzi cytosolic tryparedoxin peroxidase as peroxidase and molecular chaperone. Biochim Biophys Acta Gen Subj 2019; 1863:1583-1594. [DOI: 10.1016/j.bbagen.2019.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 12/26/2022]
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22
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Dalla Rizza J, Randall LM, Santos J, Ferrer-Sueta G, Denicola A. Differential parameters between cytosolic 2-Cys peroxiredoxins, PRDX1 and PRDX2. Protein Sci 2018; 28:191-201. [PMID: 30284335 DOI: 10.1002/pro.3520] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 01/06/2023]
Abstract
Peroxiredoxins are thiol-dependent peroxidases that function in peroxide detoxification and H2 O2 induced signaling. Among the six isoforms expressed in humans, PRDX1 and PRDX2 share 97% sequence similarity, 77% sequence identity including the active site, subcellular localization (cytosolic) but they hold different biological functions albeit associated with their peroxidase activity. Using recombinant human PRDX1 and PRDX2, the kinetics of oxidation and hyperoxidation with H2 O2 and peroxynitrite were followed by intrinsic fluorescence. At pH 7.4, the peroxidatic cysteine of both isoforms reacts nearly tenfold faster with H2 O2 than with peroxynitrite, and both reactions are orders of magnitude faster than with most protein thiols. For both isoforms, the sulfenic acids formed are in turn oxidized by H2 O2 with rate constants of ca 2 × 103 M-1 s-1 and by peroxynitrous acid significantly faster. As previously observed, a crucial difference between PRDX1 and PRDX2 is on the resolution step of the catalytic cycle, the rate of disulfide formation (11 s-1 for PRDX1, 0.2 s-1 for PRDX2, independent of the oxidant) which correlates with their different sensitivity to hyperoxidation. This kinetic pause opens different pathways on redox signaling for these isoforms. The longer lifetime of PRDX2 sulfenic acid allows it to react with other protein thiols to translate the signal via an intermediate mixed disulfide (involving its peroxidatic cysteine), whereas PRDX1 continues the cycle forming disulfide involving its resolving cysteine to function as a redox relay. In addition, the presence of C83 on PRDX1 imparts a difference on peroxidase activity upon peroxynitrite exposure that needs further study.
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Affiliation(s)
- Joaquín Dalla Rizza
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.,Center for Free Radical and Biomedical Research, Universidad de la República, Montevideo, Uruguay
| | - Lía M Randall
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.,Center for Free Radical and Biomedical Research, Universidad de la República, Montevideo, Uruguay.,Laboratorio de I+D de Moléculas Bioactivas, CENUR Litoral Norte, Universidad de la República, Paysandú, Uruguay
| | - Javier Santos
- IQUIFIB (UBA-CONICET) and Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, and Department of Physiology, Molecular and Cellular Biology, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Gerardo Ferrer-Sueta
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.,Center for Free Radical and Biomedical Research, Universidad de la República, Montevideo, Uruguay
| | - Ana Denicola
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.,Center for Free Radical and Biomedical Research, Universidad de la República, Montevideo, Uruguay
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23
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Bolduc JA, Nelson KJ, Haynes AC, Lee J, Reisz JA, Graff AH, Clodfelter JE, Parsonage D, Poole LB, Furdui CM, Lowther WT. Novel hyperoxidation resistance motifs in 2-Cys peroxiredoxins. J Biol Chem 2018; 293:11901-11912. [PMID: 29884768 PMCID: PMC6066324 DOI: 10.1074/jbc.ra117.001690] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/29/2018] [Indexed: 01/07/2023] Open
Abstract
2-Cys peroxiredoxins (Prxs) modulate hydrogen peroxide (H2O2)-mediated cell signaling. At high H2O2 levels, eukaryotic Prxs can be inactivated by hyperoxidation and are classified as sensitive Prxs. In contrast, prokaryotic Prxs are categorized as being resistant to hyperoxidation and lack the GGLG and C-terminal YF motifs present in the sensitive Prxs. Additional molecular determinants that account for the subtle differences in the susceptibility to hyperoxidation remain to be identified. A comparison of a new, 2.15-Å-resolution crystal structure of Prx2 in the oxidized, disulfide-bonded state with the hyperoxidized structure of Prx2 and Prx1 in complex with sulfiredoxin revealed three structural regions that rearrange during catalysis. With these regions in hand, focused sequence analyses were performed comparing sensitive and resistant Prx groups. From this combinatorial approach, we discovered two novel hyperoxidation resistance motifs, motifs A and B, which were validated using mutagenesis of sensitive human Prxs and resistant Salmonella enterica serovar Typhimurium AhpC. Introduction and removal of these motifs, respectively, resulted in drastic changes in the sensitivity to hyperoxidation with Prx1 becoming 100-fold more resistant to hyperoxidation and AhpC becoming 800-fold more sensitive to hyperoxidation. The increased sensitivity of the latter AhpC variant was also confirmed in vivo These results support the function of motifs A and B as primary drivers for tuning the sensitivity of Prxs to different levels of H2O2, thus enabling the initiation of variable signaling or antioxidant responses in cells.
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Affiliation(s)
| | | | | | - Jingyun Lee
- Wake Forest Baptist Comprehensive Cancer Center, and
| | - Julie A. Reisz
- Section on Molecular Medicine, Department of Internal Medicine
| | - Aaron H. Graff
- From the Center for Structural Biology, Department of Biochemistry
| | | | - Derek Parsonage
- From the Center for Structural Biology, Department of Biochemistry
| | - Leslie B. Poole
- From the Center for Structural Biology, Department of Biochemistry, ,Wake Forest Baptist Comprehensive Cancer Center, and ,Center for Redox Biology and Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157 and ,Center for Molecular Signaling, Wake Forest University, Winston-Salem, North Carolina 27101
| | - Cristina M. Furdui
- Section on Molecular Medicine, Department of Internal Medicine, ,Wake Forest Baptist Comprehensive Cancer Center, and ,Center for Redox Biology and Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157 and ,Center for Molecular Signaling, Wake Forest University, Winston-Salem, North Carolina 27101
| | - W. Todd Lowther
- From the Center for Structural Biology, Department of Biochemistry, ,Wake Forest Baptist Comprehensive Cancer Center, and ,Center for Redox Biology and Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157 and ,Center for Molecular Signaling, Wake Forest University, Winston-Salem, North Carolina 27101, To whom correspondence should be addressed:
Center for Structural Biology, Dept. of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC 27157. Tel.:
336-716-7230; Fax:
336-713-1283; E-mail:
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24
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Yewdall NA, Allison TM, Pearce FG, Robinson CV, Gerrard JA. Self-assembly of toroidal proteins explored using native mass spectrometry. Chem Sci 2018; 9:6099-6106. [PMID: 30090298 PMCID: PMC6053953 DOI: 10.1039/c8sc01379a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 06/15/2018] [Indexed: 12/13/2022] Open
Abstract
The peroxiredoxins are a well characterised family of toroidal proteins which can self-assemble into a striking array of quaternary structures, including protein nanotubes, making them attractive as building blocks for nanotechnology.
The peroxiredoxins are a well characterised family of toroidal proteins which can self-assemble into a striking array of quaternary structures, including protein nanotubes, making them attractive as building blocks for nanotechnology. Tools to characterise these assemblies are currently scarce. Here, assemblies of peroxiredoxin proteins were examined using native mass spectrometry and complementary solution techniques. We demonstrated unequivocally that tube formation is fully reversible, a useful feature in a molecular switch. Simple assembly of individual toroids was shown to be tunable by pH and the presence of a histidine tag. Collision induced dissociation experiments on peroxiredoxin rings revealed a highly unusual symmetrical disassembly pathway, consistent with the structure disassembling as a hexamer of dimers. This study provides the foundation for the rational design and precise characterisation of peroxiredoxin protein structures where self-assembly can be harnessed as a key feature for applications in nanotechnology.
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Affiliation(s)
- N Amy Yewdall
- School of Biological Sciences , School of Chemical Sciences , University of Auckland , Auckland 1010 , New Zealand.,Biomolecular Interaction Centre , School of Biological Sciences , University of Canterbury , Christchurch 8140 , New Zealand
| | - Timothy M Allison
- Department of Chemistry , University of Oxford , Oxford OX1 5QY , UK
| | - F Grant Pearce
- School of Biological Sciences , School of Chemical Sciences , University of Auckland , Auckland 1010 , New Zealand
| | - Carol V Robinson
- Department of Chemistry , University of Oxford , Oxford OX1 5QY , UK
| | - Juliet A Gerrard
- Biomolecular Interaction Centre , School of Biological Sciences , University of Canterbury , Christchurch 8140 , New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology , Victoria University , Wellington 6140 , New Zealand
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25
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Kamariah N, Eisenhaber B, Eisenhaber F, Grüber G. Active site C P-loop dynamics modulate substrate binding, catalysis, oligomerization, stability, over-oxidation and recycling of 2-Cys Peroxiredoxins. Free Radic Biol Med 2018; 118:59-70. [PMID: 29474868 DOI: 10.1016/j.freeradbiomed.2018.02.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 02/12/2018] [Accepted: 02/17/2018] [Indexed: 01/20/2023]
Abstract
Peroxiredoxins (Prxs) catalyse the rapid reduction of hydrogen peroxide, organic hydroperoxide and peroxynitrite, using a fully conserved peroxidatic cysteine (CP) located in a conserved sequence Pxxx(T/S)xxCP motif known as CP-loop. In addition, Prxs are involved in cellular signaling pathways and regulate several redox-dependent process related disease. The effective catalysis of Prxs is associated with alterations in the CP-loop between reduced, Fully Folded (FF), and oxidized, Locally Unfolded (LU) conformations, which are linked to dramatic changes in the oligomeric structure. Despite many studies, little is known about the precise structural and dynamic roles of the CP-loop on Prxs functions. Herein, the comprehensive biochemical and biophysical studies on Escherichia coli alkyl hydroperoxide reductase subunit C (EcAhpC) and the CP-loop mutants, EcAhpC-F45A and EcAhpC-F45P reveal that the reduced form of the CP-loop adopts conformational dynamics, which is essential for effective peroxide reduction. Furthermore, the point mutants alter the structure and dynamics of the reduced form of the CP-loop and, thereby, affect substrate binding, catalysis, oligomerization, stability and overoxidiation. In the oxidized form, due to restricted CP-loop dynamics, the EcAhpC-F45P mutant favours a decamer formation, which enhances the effective recycling by physiological reductases compared to wild-type EcAhpC. In addition, the study reveals that residue F45 increases the specificity of Prxs-reductase interactions. Based on these studies, we propose an evolution of the CP-loop with confined sequence conservation within Prxs subfamilies that might optimize the functional adaptation of Prxs into various physiological roles.
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Affiliation(s)
- Neelagandan Kamariah
- Bioinformatics Institute, Agency for Science, Technology and Research (A⁎STAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Birgit Eisenhaber
- Bioinformatics Institute, Agency for Science, Technology and Research (A⁎STAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Frank Eisenhaber
- Bioinformatics Institute, Agency for Science, Technology and Research (A⁎STAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore; School of Computer Engineering, Nanyang Technological University (NTU), 50 Nanyang Drive, Singapore 637553, Republic of Singapore
| | - Gerhard Grüber
- Bioinformatics Institute, Agency for Science, Technology and Research (A⁎STAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore; School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Republic of Singapore.
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26
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Nelson KJ, Perkins A, Van Swearingen AED, Hartman S, Brereton AE, Parsonage D, Salsbury FR, Karplus PA, Poole LB. Experimentally Dissecting the Origins of Peroxiredoxin Catalysis. Antioxid Redox Signal 2018; 28:521-536. [PMID: 28375740 PMCID: PMC5806077 DOI: 10.1089/ars.2016.6922] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AIMS Peroxiredoxins (Prxs) are ubiquitous cysteine-based peroxidases involved in oxidant defense and signal transduction. Despite much study, the precise roles of conserved residues remain poorly defined. In this study, we carried out extensive functional and structural characterization of 10 variants of such residues in a model decameric bacterial Prx. RESULTS Three active site proximal mutations of Salmonella typhimurium AhpC, T43V, R119A, and E49Q, lowered catalytic efficiency with hydrogen peroxide by 4-5 orders of magnitude, but did not affect reactivity toward their reductant, AhpF. pKa values of the peroxidatic cysteine were also shifted up by 1-1.3 pH units for these and a decamer disruption mutant, T77I. Except for the decamer-stabilizing T77V, all mutations destabilized decamers in the reduced form. In the oxidized form, three mutants-T77V, T43A, and T43S-exhibited stabilized decamers and were more efficiently reduced by AhpF than wild-type AhpC. Crystal structures of most mutants were solved and many showed alterations in stability of the fully folded active site loop. INNOVATION This is the first study of Prx mutants to comprehensively assess the effects of mutations on catalytic activities, the active site cysteine pKa, and the protein structure and oligomeric status. CONCLUSION The Arg119 side chain must be properly situated for efficient catalysis, but for other debilitating variants, the functional defects could be explained by structural perturbations and/or associated decamer destabilization rather than direct effects. This underscores the importance of our comprehensive approach. A remarkable new finding was the preference of the reductant for decamers. Antioxid. Redox Signal. 28, 521-536.
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Affiliation(s)
- Kimberly J Nelson
- 1 Department of Biochemistry, Wake Forest School of Medicine , Winston-Salem, North Carolina.,2 Center for Redox Biology and Medicine, Wake Forest School of Medicine , Winston-Salem, North Carolina
| | - Arden Perkins
- 3 Department of Biochemistry and Biophysics, Oregon State University , Corvallis, Oregon
| | - Amanda E D Van Swearingen
- 1 Department of Biochemistry, Wake Forest School of Medicine , Winston-Salem, North Carolina.,2 Center for Redox Biology and Medicine, Wake Forest School of Medicine , Winston-Salem, North Carolina
| | - Steven Hartman
- 3 Department of Biochemistry and Biophysics, Oregon State University , Corvallis, Oregon
| | - Andrew E Brereton
- 3 Department of Biochemistry and Biophysics, Oregon State University , Corvallis, Oregon
| | - Derek Parsonage
- 1 Department of Biochemistry, Wake Forest School of Medicine , Winston-Salem, North Carolina.,2 Center for Redox Biology and Medicine, Wake Forest School of Medicine , Winston-Salem, North Carolina
| | - Freddie R Salsbury
- 2 Center for Redox Biology and Medicine, Wake Forest School of Medicine , Winston-Salem, North Carolina.,4 Department of Physics, Wake Forest University , Winston-Salem, North Carolina
| | - P Andrew Karplus
- 3 Department of Biochemistry and Biophysics, Oregon State University , Corvallis, Oregon
| | - Leslie B Poole
- 1 Department of Biochemistry, Wake Forest School of Medicine , Winston-Salem, North Carolina.,2 Center for Redox Biology and Medicine, Wake Forest School of Medicine , Winston-Salem, North Carolina
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27
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Yewdall NA, Peskin AV, Hampton MB, Goldstone DC, Pearce FG, Gerrard JA. Quaternary structure influences the peroxidase activity of peroxiredoxin 3. Biochem Biophys Res Commun 2018; 497:558-563. [PMID: 29438714 DOI: 10.1016/j.bbrc.2018.02.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 02/09/2018] [Indexed: 12/16/2022]
Abstract
Peroxiredoxins are abundant peroxidase enzymes that are key regulators of the cellular redox environment. A major subgroup of these proteins, the typical 2-Cys peroxiredoxins, can switch between dimers and decameric or dodecameric rings, during the catalytic cycle. The necessity of this change in quaternary structure for function as a peroxidase is not fully understood. In order to explore this, human peroxiredoxin 3 (Prx3) protein was engineered to form both obligate dimers (S75E Prx3) and stabilised dodecameric rings (S78C Prx3), uncoupling structural transformations from the catalytic cycle. The obligate dimer, S75E Prx3, retained catalytic activity towards hydrogen peroxide, albeit significantly lower than the wildtype and S78C proteins, suggesting an evolutionary advantage of having higher order self-assemblies.
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Affiliation(s)
- N Amy Yewdall
- School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand; Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch 8140, New Zealand.
| | - Alexander V Peskin
- Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch 8011, New Zealand
| | - Mark B Hampton
- Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch 8011, New Zealand
| | - David C Goldstone
- School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand
| | - F Grant Pearce
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch 8140, New Zealand
| | - Juliet A Gerrard
- School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University, Wellington 6140, New Zealand; School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand.
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28
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Han SJ, Zhang Y, Kim I, Chay KO, Yoon HJ, Jang DI, Yang SY, Park J, Woo HA, Park I, Lee SR. Redox regulation of the tumor suppressor PTEN by the thioredoxin system and cumene hydroperoxide. Free Radic Biol Med 2017; 112:277-286. [PMID: 28774816 DOI: 10.1016/j.freeradbiomed.2017.07.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/06/2017] [Accepted: 07/29/2017] [Indexed: 12/22/2022]
Abstract
Intracellular redox status influences the oxidation and enzyme activity of the tumor suppressor phosphatase and tensin homolog on chromosome 10 (PTEN). Cumene hydroperoxide (CuHP), an organic hydroperoxide, is a known tumor promoter. However, molecular targets and action mechanism of CuHP in tumor promotion have not been well characterized. In this study, we investigated the effect of CuHP on the redox state of PTEN in HeLa cells. In addition, the intracellular reducing system of oxidized PTEN was analyzed using a biochemical approach and the effect of CuHP on this reducing system was also analyzed. While PTEN oxidized by hydrogen peroxide is progressively converted to its reduced form, PTEN was irreversibly oxidized by exposure to CuHP in HeLa cells. A combination of protein fractionation and mass analysis showed that the reducing system of PTEN was comprised of NADPH, thioredoxin reductase (TrxR), and thioredoxin (Trx). Although CuHP-mediated PTEN oxidation was not reversible in cells, CuHP-oxidized PTEN was reactivated by the exogenous Trx system, indicating that the cellular Trx redox system for PTEN is inactivated by CuHP. We present evidence that PTEN oxidation and the concomitant inhibition of thioredoxin by CuHP results in irreversible oxidation of PTEN in HeLa cells. In addition, ablation of peroxiredoxin (Prdx) enhanced CuHP-induced PTEN oxidation in cells. These results provide a new line of evidence that PTEN might be a crucial determinant of cell fate in response to cellular oxidative stress induced by organic hydroperoxides.
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Affiliation(s)
- Seong-Jeong Han
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea; COTDE Inc., 19-3, Ugakgol-gil, Susin-myeon, Cheonan-si, Chungcheongnam-do 330-882, Republic of Korea
| | - Ying Zhang
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Inyoung Kim
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Kee-Oh Chay
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Hyun Joong Yoon
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Dong Il Jang
- COTDE Inc., 19-3, Ugakgol-gil, Susin-myeon, Cheonan-si, Chungcheongnam-do 330-882, Republic of Korea
| | - Sung Yeul Yang
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Jiyoung Park
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Hyun Ae Woo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Iha Park
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea.
| | - Seung-Rock Lee
- Department of Biochemistry, Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea.
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29
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Ledgerwood EC, Marshall JW, Weijman JF. The role of peroxiredoxin 1 in redox sensing and transducing. Arch Biochem Biophys 2017; 617:60-67. [DOI: 10.1016/j.abb.2016.10.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/06/2016] [Accepted: 10/14/2016] [Indexed: 12/11/2022]
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30
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Abstract
Peroxiredoxins (Prxs) are a large and conserved family of peroxidases that are considered to be the primary cellular guardians against oxidative stress in all living organisms. Prxs share a thioredoxin fold and contain a highly-reactive peroxidatic cysteine in a specialised active-site environment that is able to reduce their peroxide substrates. The minimal functional unit for Prxs are either monomers or dimers, but many dimers assemble into decameric rings. Ring structures can further form a variety of high molecular weight complexes. Many eukaryotic Prxs contain a conserved GGLG and C-terminal YF motif that confer sensitivity to elevated levels of peroxide, leading to hyperoxidation and inactivation. Inactive forms of Prxs can be re-reduced by the enzyme sulfiredoxin, in an ATP-dependent reaction. Cycles of hyperoxidation and reactivation are considered to play an integral role in a variety of H2O2-mediated cell signalling pathways in both stress and non-stress conditions. Prxs are also considered to exhibit chaperone-like properties when cells are under oxidative or thermal stress. The roles of various types of covalent modifications, e.g. acetylation and phosphorylation are also discussed. The ability of Prxs to assemble into ordered arrays such as nanotubes is currently being exploited in nanotechnology.
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Affiliation(s)
- Zhenbo Cao
- Institute of Molecular, Cell and Systems Biology, Davidson Building, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - John Gordon Lindsay
- Institute of Molecular, Cell and Systems Biology, Davidson Building, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK.
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31
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Liu Z, Hu Y, Gong Y, Zhang W, Liu C, Wang Q, Deng H. Hydrogen peroxide mediated mitochondrial UNG1-PRDX3 interaction and UNG1 degradation. Free Radic Biol Med 2016; 99:54-62. [PMID: 27480846 DOI: 10.1016/j.freeradbiomed.2016.07.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 07/09/2016] [Accepted: 07/29/2016] [Indexed: 01/13/2023]
Abstract
Isoform 1 of uracil-DNA glycosylase (UNG1) is the major protein for initiating base-excision repair in mitochondria and is in close proximity to the respiratory chain that generates reactive oxygen species (ROS). Effects of ROS on the stability of UNG1 have not been well characterized. In the present study, we found that overexpression of UNG1 enhanced cells' resistance to oxidative stress and protected mitochondrial DNA (mtDNA) from oxidation. Proteomics analysis showed that UNG1 bound to eight proteins in the mitochondria, including PAPSS2, CD70 antigen, and AGR2 under normal growth conditions, whereas UNG1 mainly bound to Peroxiredoxin 3 (PRDX3) via a disulfide linkage under oxidative stress. We further demonstrated that the UNG1-PRDX3 interaction protected UNG1 from ROS-mediated degradation and prevented mtDNA oxidation. Moreover, our results show that ROS-mediated UNG1 degradation was Lon protease 1 (LonP1)-dependent and mitochondrial UNG1 degradation was aggravated by knockdown of PRDX3 expression. Taken together, these results reveal a novel function of UNG1 in the recruitment of PRDX3 to mtDNA under oxidative stress, enabling protection of UNG1 and UNG1-bound DNA from ROS damage and enhancing cell resistance to oxidative stress.
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Affiliation(s)
- Zhilei Liu
- MOE Key Laboratory of Bioinformatics and the Center of Biomedical Analsis, School of Life Sciences, Tsinghua University, Beijing, China
| | - Yadong Hu
- MOE Key Laboratory of Bioinformatics and the Center of Biomedical Analsis, School of Life Sciences, Tsinghua University, Beijing, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Yiyi Gong
- MOE Key Laboratory of Bioinformatics and the Center of Biomedical Analsis, School of Life Sciences, Tsinghua University, Beijing, China
| | - Wenhao Zhang
- MOE Key Laboratory of Bioinformatics and the Center of Biomedical Analsis, School of Life Sciences, Tsinghua University, Beijing, China
| | - Chongdong Liu
- Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China
| | - Qingtao Wang
- Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China
| | - Haiteng Deng
- MOE Key Laboratory of Bioinformatics and the Center of Biomedical Analsis, School of Life Sciences, Tsinghua University, Beijing, China.
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32
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Andreyev AY, Kushnareva YE, Murphy AN, Starkov AA. Mitochondrial ROS Metabolism: 10 Years Later. BIOCHEMISTRY (MOSCOW) 2016; 80:517-31. [PMID: 26071769 DOI: 10.1134/s0006297915050028] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The role of mitochondria in oxidative stress is well recognized, but many questions are still to be answered. This article is intended to update our comprehensive review in 2005 by highlighting the progress in understanding of mitochondrial reactive oxygen species (ROS) metabolism over the past 10 years. We review the recently identified or re-appraised sources of ROS generation in mitochondria, such as p66(shc) protein, succinate dehydrogenase, and recently discovered properties of the mitochondrial antioxidant system. We also reflect upon some controversies, disputes, and misconceptions that confound the field.
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Affiliation(s)
- A Y Andreyev
- Department of Pharmacology, University of California, San Diego, La Jolla, CA 92093-0601, USA.
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33
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Van Laer K, Dick TP. Utilizing Natural and Engineered Peroxiredoxins As Intracellular Peroxide Reporters. Mol Cells 2016; 39:46-52. [PMID: 26810074 PMCID: PMC4749873 DOI: 10.14348/molcells.2016.2328] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/06/2015] [Indexed: 01/27/2023] Open
Abstract
It is increasingly apparent that nature evolved peroxiredoxins not only as H2O2 scavengers but also as highly sensitive H2O2 sensors and signal transducers. Here we ask whether the H2O2 sensing role of Prx can be exploited to develop probes that allow to monitor intracellular H2O2 levels with unprecedented sensitivity. Indeed, simple gel shift assays visualizing the oxidation of endogenous 2-Cys peroxiredoxins have already been used to detect subtle changes in intracellular H2O2 concentration. The challenge however is to create a genetically encoded probe that offers real-time measurements of H2O2 levels in intact cells via the Prx oxidation state. We discuss potential design strategies for Prx-based probes based on either the redox-sensitive fluorophore roGFP or the conformation-sensitive fluorophore cpYFP. Furthermore, we outline the structural and chemical complexities which need to be addressed when using Prx as a sensing moiety for H2O2 probes. We suggest experimental strategies to investigate the influence of these complexities on probe behavior. In doing so, we hope to stimulate the development of Prx-based probes which may spearhead the further study of cellular H2O2 homeostasis and Prx signaling.
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Affiliation(s)
- Koen Van Laer
- Division of Redox Regulation, DKFZ–ZMBH Alliance, German Cancer Research Center, Heidelberg,
Germany
| | - Tobias P. Dick
- Division of Redox Regulation, DKFZ–ZMBH Alliance, German Cancer Research Center, Heidelberg,
Germany
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34
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Kinetic analysis of structural influences on the susceptibility of peroxiredoxins 2 and 3 to hyperoxidation. Biochem J 2015; 473:411-21. [PMID: 26614766 DOI: 10.1042/bj20150572] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 11/27/2015] [Indexed: 02/06/2023]
Abstract
Mammalian 2-cysteine peroxiredoxins (Prxs) are susceptible to hyperoxidation by excess H2O2. The cytoplasmic family member Prx2 hyperoxidizes more readily than mitochondrial Prx3 due to slower dimerization of the sulfenic acid (SpOH) intermediate. Four variant amino acids near the C-terminus have been shown to contribute to this difference. We have performed kinetic analysis of the relationship between hyperoxidation and disulfide formation, using whole-protein MS and comparing wild-type (WT) Prx2 and Prx3 with tail-swap mutants in which the four amino acids were reversed. These changes make Prx3 more sensitive and Prx2 less sensitive to hyperoxidation and accounted for ∼70% of the difference between the two proteins. The tail swap mutant of Prx3 was also more susceptible when expressed in the mitochondria of HeLa cells. The hyperoxidized product at lower excesses of H2O2 was a semi-hyperoxidized dimer with one active site disulfide and the other a sulfinic acid. For Prx2, increasing the H2O2 concentration resulted in complete hyperoxidation. In contrast, only approximately half the Prx3 active sites underwent hyperoxidation and, even with high H2O2, the predominant product was the hyperoxidized dimer. Size exclusion chromatography (SEC) showed that the oligomeric forms of all redox states of Prx3 dissociated more readily into dimeric units than their Prx2 counterparts. Notably the species with one disulfide and one hyperoxidized active site was decameric for Prx2 and dimeric for Prx3. Reduction and re-oxidation of the hyperoxidized dimer of Prx3 produced hyperoxidized monomers, implying dissociation and rearrangement of the subunits of the functional homodimer.
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35
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Noichri Y, Palais G, Ruby V, D'Autreaux B, Delaunay-Moisan A, Nyström T, Molin M, Toledano MB. In vivo parameters influencing 2-Cys Prx oligomerization: The role of enzyme sulfinylation. Redox Biol 2015; 6:326-333. [PMID: 26335398 PMCID: PMC4556779 DOI: 10.1016/j.redox.2015.08.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 08/10/2015] [Accepted: 08/11/2015] [Indexed: 11/28/2022] Open
Abstract
2-Cys Prxs are H2O2-specific antioxidants that become inactivated by enzyme hyperoxidation at elevated H2O2 levels. Although hyperoxidation restricts the antioxidant physiological role of these enzymes, it also allows the enzyme to become an efficient chaperone holdase. The critical molecular event allowing the peroxidase to chaperone switch is thought to be the enzyme assembly into high molecular weight (HMW) structures brought about by enzyme hyperoxidation. How hyperoxidation promotes HMW assembly is not well understood and Prx mutants allowing disentangling its peroxidase and chaperone functions are lacking. To begin addressing the link between enzyme hyperoxidation and HMW structures formation, we have evaluated the in vivo 2-Cys Prxs quaternary structure changes induced by H2O2 by size exclusion chromatography (SEC) on crude lysates, using wild type (Wt) untagged and Myc-tagged S. cerevisiae 2-Cys Prx Tsa1 and derivative Tsa1 mutants or genetic conditions known to inactivate peroxidase or chaperone activity or altering the enzyme sensitivity to hyperoxidation. Our data confirm the strict causative link between H2O2-induced hyperoxidation and HMW formation/stabilization, also raising the question of whether CP hyperoxidation triggers the assembly of HMW structures by the stacking of decamers, which is the prevalent view of the literature, or rather, the stabilization of preassembled stacked decamers.
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Affiliation(s)
- Y Noichri
- Oxidative Stress and Cancer, IBITECS, SBIGEM, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - G Palais
- Oxidative Stress and Cancer, IBITECS, SBIGEM, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - V Ruby
- Oxidative Stress and Cancer, IBITECS, SBIGEM, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - B D'Autreaux
- Oxidative Stress and Cancer, IBITECS, SBIGEM, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - A Delaunay-Moisan
- Oxidative Stress and Cancer, IBITECS, SBIGEM, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - T Nyström
- Department of Chemistry and Molecular Biology (CMB), University of Gothenburg, Medicinaregatan 9C, S-413 90 Göteborg, Sweden
| | - M Molin
- Department of Chemistry and Molecular Biology (CMB), University of Gothenburg, Medicinaregatan 9C, S-413 90 Göteborg, Sweden
| | - M B Toledano
- Oxidative Stress and Cancer, IBITECS, SBIGEM, CEA-Saclay, 91191 Gif-sur-Yvette, France.
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36
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Wang JCY, Zlotnick A, Mecinović J. Transmission electron microscopy enables the reconstruction of the catenane and ring forms of CS2 hydrolase. Chem Commun (Camb) 2015; 50:10281-3. [PMID: 25056142 DOI: 10.1039/c4cc04650a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transmission electron microscopic studies on CS2 hydrolase provide direct evidence for the existence of the hexadecameric catenane and octameric ring topologies. Reconstructions of both protein assemblies are in good agreement with crystallographic analyses of the catenane and ring forms of CS2 hydrolase.
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Affiliation(s)
- Joseph Che-Yen Wang
- Molecular & Cellular Biochemistry Department, Simon Hall 217, 212 S. Hawthorne Drive, Indiana University, Bloomington, IN 47405, USA.
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37
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Cunniff B, Newick K, Nelson KJ, Wozniak AN, Beuschel S, Leavitt B, Bhave A, Butnor K, Koenig A, Chouchani ET, James AM, Haynes AC, Lowther WT, Murphy MP, Shukla A, Heintz NH. Disabling Mitochondrial Peroxide Metabolism via Combinatorial Targeting of Peroxiredoxin 3 as an Effective Therapeutic Approach for Malignant Mesothelioma. PLoS One 2015; 10:e0127310. [PMID: 26011724 PMCID: PMC4444329 DOI: 10.1371/journal.pone.0127310] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 04/14/2015] [Indexed: 01/01/2023] Open
Abstract
Dysregulation of signaling pathways and energy metabolism in cancer cells enhances production of mitochondrial hydrogen peroxide that supports tumorigenesis through multiple mechanisms. To counteract the adverse effects of mitochondrial peroxide many solid tumor types up-regulate the mitochondrial thioredoxin reductase 2 - thioredoxin 2 (TRX2) - peroxiredoxin 3 (PRX3) antioxidant network. Using malignant mesothelioma cells as a model, we show that thiostrepton (TS) irreversibly disables PRX3 via covalent crosslinking of peroxidatic and resolving cysteine residues in homodimers, and that targeting the oxidoreductase TRX2 with the triphenylmethane gentian violet (GV) potentiates adduction by increasing levels of disulfide-bonded PRX3 dimers. Due to the fact that activity of the PRX3 catalytic cycle dictates the rate of adduction by TS, immortalized and primary human mesothelial cells are significantly less sensitive to both compounds. Moreover, stable knockdown of PRX3 reduces mesothelioma cell proliferation and sensitivity to TS. Expression of catalase in shPRX3 mesothelioma cells restores defects in cell proliferation but not sensitivity to TS. In a SCID mouse xenograft model of human mesothelioma, administration of TS and GV together reduced tumor burden more effectively than either agent alone. Because increased production of mitochondrial hydrogen peroxide is a common phenotype of malignant cells, and TS and GV are well tolerated in mammals, we propose that targeting PRX3 is a feasible redox-dependent strategy for managing mesothelioma and other intractable human malignancies.
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Affiliation(s)
- Brian Cunniff
- University of Vermont, College of Medicine, Department of Pathology, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
- * E-mail:
| | - Kheng Newick
- University of Pennsylvania School of Medicine, Division of Pulmonary, Thoracic Oncology Research Laboratory, Philadelphia, PA, 19147, United States of America
| | - Kimberly J. Nelson
- Wake Forest School of Medicine, Department of Biochemistry, Medical Center Boulevard, Winston-Salem, NC, 27157, United States of America
| | - Alexandra N. Wozniak
- University of Vermont, College of Medicine, Department of Pathology, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
| | - Stacie Beuschel
- University of Vermont, College of Medicine, Department of Pathology, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
| | - Bruce Leavitt
- University of Vermont, College of Medicine, Department of Surgery, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
| | - Anant Bhave
- University of Vermont, College of Medicine, Department of Radiology, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
| | - Kelly Butnor
- University of Vermont, College of Medicine, Department of Pathology, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
| | - Andreas Koenig
- University of Vermont, Department of Immunology medicine, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
| | - Edward T. Chouchani
- Medical Research Council, Mitochondrial Biology Unit, Hills Road, Cambridge, CB2 0XY, United Kingdom
- Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 2QQ, United Kingdom
| | - Andrew M. James
- Medical Research Council, Mitochondrial Biology Unit, Hills Road, Cambridge, CB2 0XY, United Kingdom
| | - Alexina C. Haynes
- Wake Forest School of Medicine, Department of Biochemistry, Medical Center Boulevard, Winston-Salem, NC, 27157, United States of America
| | - W. Todd Lowther
- Wake Forest School of Medicine, Department of Biochemistry, Medical Center Boulevard, Winston-Salem, NC, 27157, United States of America
| | - Michael P. Murphy
- Medical Research Council, Mitochondrial Biology Unit, Hills Road, Cambridge, CB2 0XY, United Kingdom
| | - Arti Shukla
- University of Vermont, College of Medicine, Department of Pathology, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
| | - Nicholas H. Heintz
- University of Vermont, College of Medicine, Department of Pathology, 149 Beaumont Ave, Burlington, VT, 05405, United States of America
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38
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Cryo-Electron Microscopy Structure of Human Peroxiredoxin-3 Filament Reveals the Assembly of a Putative Chaperone. Structure 2015; 23:912-920. [DOI: 10.1016/j.str.2015.03.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 03/21/2015] [Accepted: 03/23/2015] [Indexed: 01/07/2023]
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39
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Cao Z, McGow DP, Shepherd C, Lindsay JG. Improved Catenated Structures of Bovine Peroxiredoxin III F190L Reveal Details of Ring-Ring Interactions and a Novel Conformational State. PLoS One 2015; 10:e0123303. [PMID: 25906064 PMCID: PMC4407889 DOI: 10.1371/journal.pone.0123303] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 03/03/2015] [Indexed: 11/19/2022] Open
Abstract
Mitochondrial 2-cys peroxiredoxin III (PrxIII) is a key player in antioxidant defence reducing locally-generated H2O2 to H2O. A Phe to Leu (F190L) mutation in the C-terminal α-helix of PrxIII, mimicking that found in some bacteria and parasites, increases its resistance to hyperoxidation but has no obvious influence on peroxidase activity. Here we report on the oxidized and reduced crystal structures of bovine PrxIII F190L at 2.4 Å and 2.2 Å, respectively. Both structures exist as two-ring catenanes with their dodecameric rings inclined at 55o to each other, similar to that previously reported for PrxIII C168S. The new higher-resolution structures reveal details of the complex network of H-bonds stabilising the inter-toroid contacts. In addition, Arg123, the key conserved residue, that normally interacts with the catalytic cys (Cp, cys 47) is found in a distinct conformation extending away from the Cp while the characteristic Arg-Glu-Arg network, underpinning the active-site geometry also displays a distinctive arrangement, not observed previously. This novel active-site organisation may provide new insights into the dynamics of the large-scale conformational changes occurring between oxidized and reduced states.
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Affiliation(s)
- Zhenbo Cao
- From the Institute of Molecular, Cell and Systems Biology, CMVLS, University of Glasgow, Glasgow, United Kingdom
| | - Donna P. McGow
- From the Institute of Molecular, Cell and Systems Biology, CMVLS, University of Glasgow, Glasgow, United Kingdom
| | - Colin Shepherd
- From the Institute of Molecular, Cell and Systems Biology, CMVLS, University of Glasgow, Glasgow, United Kingdom
| | - J. Gordon Lindsay
- From the Institute of Molecular, Cell and Systems Biology, CMVLS, University of Glasgow, Glasgow, United Kingdom
- * E-mail:
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40
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Morais MAB, Giuseppe PO, Souza TACB, Alegria TGP, Oliveira MA, Netto LES, Murakami MT. How pH modulates the dimer-decamer interconversion of 2-Cys peroxiredoxins from the Prx1 subfamily. J Biol Chem 2015; 290:8582-90. [PMID: 25666622 DOI: 10.1074/jbc.m114.619205] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
2-Cys peroxiredoxins belonging to the Prx1 subfamily are Cys-based peroxidases that control the intracellular levels of H2O2 and seem to assume a chaperone function under oxidative stress conditions. The regulation of their peroxidase activity as well as the observed functional switch from peroxidase to chaperone involves changes in their quaternary structure. Multiple factors can modulate the oligomeric transitions of 2-Cys peroxiredoxins such as redox state, post-translational modifications, and pH. However, the molecular basis for the pH influence on the oligomeric state of these enzymes is still elusive. Herein, we solved the crystal structure of a typical 2-Cys peroxiredoxin from Leishmania in the dimeric (pH 8.5) and decameric (pH 4.4) forms, showing that conformational changes in the catalytic loop are associated with the pH-induced decamerization. Mutagenesis and biophysical studies revealed that a highly conserved histidine (His(113)) functions as a pH sensor that, at acidic conditions, becomes protonated and forms an electrostatic pair with Asp(76) from the catalytic loop, triggering the decamerization. In these 2-Cys peroxiredoxins, decamer formation is important for the catalytic efficiency and has been associated with an enhanced sensitivity to oxidative inactivation by overoxidation of the peroxidatic cysteine. In eukaryotic cells, exposure to high levels of H2O2 can trigger intracellular pH variations, suggesting that pH changes might act cooperatively with H2O2 and other oligomerization-modulator factors to regulate the structure and function of typical 2-Cys peroxiredoxins in response to oxidative stress.
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Affiliation(s)
- Mariana A B Morais
- From the Laboratório Nacional de Biociências, Centro Nacional de Pesquisa em Energia e Materiais, Campinas/SP, 13083-970
| | - Priscila O Giuseppe
- From the Laboratório Nacional de Biociências, Centro Nacional de Pesquisa em Energia e Materiais, Campinas/SP, 13083-970
| | - Tatiana A C B Souza
- the Laboratório de Proteômica e Engenharia de Proteínas, Instituto Carlos Chagas, Fiocruz, Curitiba/PR, 81350-010
| | - Thiago G P Alegria
- the Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo/SP, 05508-900, and
| | - Marcos A Oliveira
- the Departamento de Biologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Campus do Litoral Paulista, São Vicente/SP 11330-900, Brazil
| | - Luis E S Netto
- the Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo/SP, 05508-900, and
| | - Mario T Murakami
- From the Laboratório Nacional de Biociências, Centro Nacional de Pesquisa em Energia e Materiais, Campinas/SP, 13083-970,
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41
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Allen AR, Eilertson K, Sharma S, Baure J, Allen B, Leu D, Rosi S, Raber J, Huang TT, Fike JR. Delayed administration of alpha-difluoromethylornithine prevents hippocampus-dependent cognitive impairment after single and combined injury in mice. Radiat Res 2014; 182:489-98. [PMID: 25375198 PMCID: PMC4282164 DOI: 10.1667/rr13753.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Radiation exposure due to radiological terrorism and military circumstances are a continuing threat for the civilian population. In an uncontrolled radiation event, it is likely that there will be other types of injury involved, including trauma. While radiation combined injury is recognized as an area of great significance, overall there is a paucity of information regarding the mechanisms underlying the interactions between irradiation and other forms of injury, or what countermeasures might be effective in ameliorating such changes. The objective of this study was to determine if difluoromethylornithine (DFMO) could reduce the adverse effects of single or combined injury if administered beginning 24 h after exposure. Eight-week-old C57BL/J6 young-adult male mice received whole-body cesium-137 ((137)Cs) irradiation with 4 Gy. Immediately after irradiation, unilateral traumatic brain injury was induced using a controlled cortical impact system. Forty-four days postirradiation, animals were tested for hippocampus-dependent cognitive performance in the Morris water maze. After cognitive testing, animals were euthanized and their brains snap frozen for immunohistochemical assessment of neuroinflammation (activated microglia) and neurogenesis in the hippocampal dentate gyrus. Our data show that single and combined injuries induced variable degrees of hippocampus-dependent cognitive dysfunction, and when given 24 h post trauma, DFMO treatment ameliorated those effects. Cellular changes including neurogenesis and numbers of activated microglia were generally not associated with the cognitive changes. Further analyses also revealed that DFMO increased hippocampal protein levels of the antioxidants thioredoxin 1 and peroxiredoxin 3 compared to vehicle treated animals. While the mechanisms responsible for the improvement in cognition after DFMO treatment are not yet clear, these results constitute a basis for further development of DFMO as a countermeasure for ameliorating the of risks for cognitive dysfunction in individuals subjected to trauma and radiation combined injury.
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Affiliation(s)
- Antiño R. Allen
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205
| | - Kirsten Eilertson
- Bioinformatics Core, Gladstone Institutes San Francisco, California 94158
| | - Sourabh Sharma
- Brain and Spinal Injury Center, Department of Neurological Surgery, University of California, San Francisco, California 94110
| | - Jennifer Baure
- Brain and Spinal Injury Center, Department of Neurological Surgery, University of California, San Francisco, California 94110
| | - Barrett Allen
- Brain and Spinal Injury Center, Department of Neurological Surgery, University of California, San Francisco, California 94110
| | - David Leu
- Department of Neurology and Neurological Sciences, Stanford University, Stanford, California 94304
| | - Susanna Rosi
- Brain and Spinal Injury Center, Department of Neurological Surgery, University of California, San Francisco, California 94110
- Physical Therapy and Rehabilitation Science, University of California, San Francisco, California 94110
| | - Jacob Raber
- Departments of Behavioral Neuroscience, Neurology, and Radiation Medicine, Division of Neuroscience, ONPRC, Oregon Health and Science University, Portland, Oregon 97239
| | - Ting-Ting Huang
- Department of Neurology and Neurological Sciences, Stanford University, Stanford, California 94304
- Geriatric Research, Education and Clinical Center, Veterans Affairs Palo Alto Health Care System, Palo Alto, California 94304
| | - John R. Fike
- Brain and Spinal Injury Center, Department of Neurological Surgery, University of California, San Francisco, California 94110
- Department of Radiation Oncology, University of California, San Francisco, California 94110
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42
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Phillips AJ, Littlejohn J, Yewdall NA, Zhu T, Valéry C, Pearce FG, Mitra AK, Radjainia M, Gerrard JA. Peroxiredoxin is a Versatile Self-Assembling Tecton for Protein Nanotechnology. Biomacromolecules 2014; 15:1871-81. [DOI: 10.1021/bm500261u] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Amy J. Phillips
- Biomolecular
Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
- MacDiarmid
Institute for Advanced Materials and Nanotechnology, Victoria University, Wellington, New Zealand
- School
of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Jacob Littlejohn
- Biomolecular
Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - N. Amy Yewdall
- Biomolecular
Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Tong Zhu
- Biomolecular
Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Céline Valéry
- Biomolecular
Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - F. Grant Pearce
- Biomolecular
Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Alok K. Mitra
- School
of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Mazdak Radjainia
- School
of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Juliet A. Gerrard
- Biomolecular
Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
- MacDiarmid
Institute for Advanced Materials and Nanotechnology, Victoria University, Wellington, New Zealand
- School
of Biological Sciences, University of Auckland, Auckland, New Zealand
- Callaghan
Innovation
Research Limited, Lower Hutt, New Zealand
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43
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van Eldijk MB, Pieters BJ, Mikhailov VA, Robinson CV, van Hest JCM, Mecinović J. Catenane versus ring: do both assemblies of CS2 hydrolase exhibit the same stability and catalytic activity? Chem Sci 2014. [DOI: 10.1039/c4sc00059e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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44
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Switching between the Alternative Structures and Functions of a 2-Cys Peroxiredoxin, by Site-Directed Mutagenesis. J Mol Biol 2013; 425:4556-68. [DOI: 10.1016/j.jmb.2013.09.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 08/28/2013] [Accepted: 09/02/2013] [Indexed: 12/28/2022]
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45
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Haynes AC, Qian J, Reisz JA, Furdui CM, Lowther WT. Molecular basis for the resistance of human mitochondrial 2-Cys peroxiredoxin 3 to hyperoxidation. J Biol Chem 2013; 288:29714-23. [PMID: 24003226 DOI: 10.1074/jbc.m113.473470] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Peroxiredoxins (Prxs) detoxify peroxides and modulate H2O2-mediated cell signaling in normal and numerous pathophysiological contexts. The typical 2-Cys subclass of Prxs (human Prx1-4) utilizes a Cys sulfenic acid (Cys-SOH) intermediate and disulfide bond formation across two subunits during catalysis. During oxidative stress, however, the Cys-SOH moiety can react with H2O2 to form Cys sulfinic acid (Cys-SO2H), resulting in inactivation. The propensity to hyperoxidize varies greatly among human Prxs. Mitochondrial Prx3 is the most resistant to inactivation, but the molecular basis for this property is unknown. A panel of chimeras and Cys variants of Prx2 and Prx3 were treated with H2O2 and analyzed by rapid chemical quench and time-resolved electrospray ionization-TOF mass spectrometry. The latter utilized an on-line rapid-mixing setup to collect data on the low seconds time scale. These approaches enabled the first direct observation of the Cys-SOH intermediate and a putative Cys sulfenamide (Cys-SN) for Prx2 and Prx3 during catalysis. The substitution of C-terminal residues in Prx3, residues adjacent to the resolving Cys residue, resulted in a Prx2-like protein with increased sensitivity to hyperoxidation and decreased ability to form the intermolecular disulfide bond between subunits. The corresponding Prx2 chimera became more resistant to hyperoxidation. Taken together, the results of this study support that the kinetics of the Cys-SOH intermediate is key to determine the probability of hyperoxidation or disulfide formation. Given the oxidizing environment of the mitochondrion, it makes sense that Prx3 would favor disulfide bond formation as a protection mechanism against hyperoxidation and inactivation.
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Affiliation(s)
- Alexina C Haynes
- From the Center for Structural Biology and Department of Biochemistry
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46
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Nguyen JB, Pool CD, Wong CYB, Treger RS, Williams DL, Cappello M, Lea WA, Simeonov A, Vermeire JJ, Modis Y. Peroxiredoxin-1 from the human hookworm Ancylostoma ceylanicum forms a stable oxidized decamer and is covalently inhibited by conoidin A. ACTA ACUST UNITED AC 2013; 20:991-1001. [PMID: 23891152 DOI: 10.1016/j.chembiol.2013.06.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 05/23/2013] [Accepted: 06/13/2013] [Indexed: 01/24/2023]
Abstract
Hookworms are parasitic nematodes that have a devastating impact on global health, particularly in developing countries. We report a biochemical and structural analysis of a peroxiredoxin from the hookworm Ancylostoma ceylanicum, AcePrx-1. Peroxiredoxins provide antioxidant protection and act as signaling molecules and chaperones. AcePrx-1 is expressed in adult hookworms and can be inactivated by 2,3-bis(bromomethyl)quinoxaline-1,4-dioxide (conoidin A). Conoidin A inactivates AcePrx-1 by alkylating or crosslinking the catalytic cysteines, while maintaining the enzyme in the "locally unfolded" conformation. Irreversible oxidation of the resolving cysteine may contribute additional inhibitory activity. A crystal structure of oxidized AcePrx-1 reveals a disulfide-linked decamer. A helix macrodipole near the active site increases the reactivity of the catalytic cysteines to conoidin A. This work demonstrates the promise of conoidin compounds as probes to evaluate peroxiredoxins as drug targets in human parasites.
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Affiliation(s)
- Jennifer B Nguyen
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA
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47
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Ogasawara Y, Ohminato T, Nakamura Y, Ishii K. Structural and functional analysis of native peroxiredoxin 2 in human red blood cells. Int J Biochem Cell Biol 2012; 44:1072-7. [DOI: 10.1016/j.biocel.2012.04.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 04/07/2012] [Accepted: 04/11/2012] [Indexed: 10/28/2022]
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48
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Cao Z, Tavender TJ, Roszak AW, Cogdell RJ, Bulleid NJ. Crystal structure of reduced and of oxidized peroxiredoxin IV enzyme reveals a stable oxidized decamer and a non-disulfide-bonded intermediate in the catalytic cycle. J Biol Chem 2011; 286:42257-42266. [PMID: 21994946 PMCID: PMC3234919 DOI: 10.1074/jbc.m111.298810] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 09/19/2011] [Indexed: 11/30/2022] Open
Abstract
Peroxiredoxin IV (PrxIV) is an endoplasmic reticulum-localized enzyme that metabolizes the hydrogen peroxide produced by endoplasmic reticulum oxidase 1 (Ero1). It has been shown to play a role in de novo disulfide formation, oxidizing members of the protein disulfide isomerase family of enzymes, and is a member of the typical 2-Cys peroxiredoxin family. We have determined the crystal structure of both reduced and disulfide-bonded, as well as a resolving cysteine mutant of human PrxIV. We show that PrxIV has a similar structure to other typical 2-Cys peroxiredoxins and undergoes a conformational change from a fully folded to a locally unfolded form following the formation of a disulfide between the peroxidatic and resolving cysteine residues. Unlike other mammalian typical 2-Cys peroxiredoxins, we show that human PrxIV forms a stable decameric structure even in its disulfide-bonded state. In addition, the structure of a resolving cysteine mutant reveals an intermediate in the reaction cycle that adopts the locally unfolded conformation. Interestingly the peroxidatic cysteine in the crystal structure is sulfenylated rather than sulfinylated or sulfonylated. In addition, the peroxidatic cysteine in the resolving cysteine mutant is resistant to hyper-oxidation following incubation with high concentrations of hydrogen peroxide. These results highlight some unique properties of PrxIV and suggest that the equilibrium between the fully folded and locally unfolded forms favors the locally unfolded conformation upon sulfenylation of the peroxidatic cysteine residue.
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Affiliation(s)
- Zhenbo Cao
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - Timothy J Tavender
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - Aleksander W Roszak
- WestCHEM, School of Chemistry, College of Science and Engineering, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - Richard J Cogdell
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - Neil J Bulleid
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom.
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49
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Sulpizio M, Falone S, Amicarelli F, Marchisio M, Di Giuseppe F, Eleuterio E, Di Ilio C, Angelucci S. Molecular basis underlying the biological effects elicited by extremely low-frequency magnetic field (ELF-MF) on neuroblastoma cells. J Cell Biochem 2011; 112:3797-806. [DOI: 10.1002/jcb.23310] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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50
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Song IS, Kim HK, Jeong SH, Lee SR, Kim N, Rhee BD, Ko KS, Han J. Mitochondrial peroxiredoxin III is a potential target for cancer therapy. Int J Mol Sci 2011; 12:7163-85. [PMID: 22072940 PMCID: PMC3211031 DOI: 10.3390/ijms12107163] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 09/30/2011] [Accepted: 10/20/2011] [Indexed: 01/01/2023] Open
Abstract
Mitochondria are involved either directly or indirectly in oncogenesis and the alteration of metabolism in cancer cells. Cancer cells contain large numbers of abnormal mitochondria and produce large amounts of reactive oxygen species (ROS). Oxidative stress is caused by an imbalance between the production of ROS and the antioxidant capacity of the cell. Several cancer therapies, such as chemotherapeutic drugs and radiation, disrupt mitochondrial homeostasis and release cytochrome c, leading to apoptosome formation, which activates the intrinsic pathway. This is modulated by the extent of mitochondrial oxidative stress. The peroxiredoxin (Prx) system is a cellular defense system against oxidative stress, and mitochondria in cancer cells are known to contain high levels of Prx III. Here, we review accumulating evidence suggesting that mitochondrial oxidative stress is involved in cancer, and discuss the role of the mitochondrial Prx III antioxidant system as a potential target for cancer therapy. We hope that this review will provide the basis for new strategic approaches in the development of effective cancer treatments.
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Affiliation(s)
- In-Sung Song
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 614-7-5, Korea; E-Mails: (I.-S.S.); (H.-K.K.); (S.-H.J.); (S.-R.L.); (N.K.); (B.D.R.); (K.S.K.)
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