1
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Ozoani H, Ezejiofor AN, Okolo KO, Orish CN, Cirovic A, Cirovic A, Orisakwe OE. Zinc and selenium attenuate quaternary heavy metal mixture-induced testicular damage via amplification of the antioxidant system, reduction in metal accumulation, inflammatory and apoptotic biomarkers. Toxicol Res 2023; 39:497-515. [PMID: 37398573 PMCID: PMC10313602 DOI: 10.1007/s43188-023-00187-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 04/20/2023] [Accepted: 04/26/2023] [Indexed: 07/04/2023] Open
Abstract
Heavy metals (HMs) such as cadmium (Cd), lead (Pb), arsenic (As), and mercury (Hg) are highly toxic elements. They are often found together in nature as a heavy metal mixture (HMM) and are known to contribute to subfertility/infertility as environmental pollutants. This study aims to evaluate the potential benefits of treating HMM-induced testicular pathophysiology with zinc (Zn) and/or selenium (Se). Six-week-old male Sprague Dawley rats were grouped into 5 (n = 7). The control group received deionized water, while the other groups were treated with PbCl2 (20 mg kg-1), CdCl2 (1.61 mg kg-1), HgCl2 (0.40 mg kg-1), and Na2AsO3 (10 mg kg-1) in deionized water for 60 days. Additionally, groups III to V received Zn, Se, and Zn/Se, respectively, for 60 days. The study evaluated testis weight, metal accumulation, sperm analysis, FSH, LH, testosterone, prolactin, oxidative stress, antioxidants, pro-inflammatory and apoptotic markers, and presented structural changes in the testis as micrographs. HMM caused a significant increase in testis weight, metal accumulation, prolactin, oxidative stress, and pro-inflammatory and apoptotic markers, while significantly decreasing semen analysis, FSH, LH, and testosterone. Histology showed decreased spermatogenesis and spermiogenesis, as evidenced by the structure of the germ cells and spermatids. However, Zn, Se, or both ameliorated and reversed some of the observed damages. This study provides further evidence for the mitigative potential of Zn, Se, or both in reversing the damage inflicted by HMM in the testis, and as a countermeasure towards improving HM-induced decrease in public health fecundity. Graphical abstract
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Affiliation(s)
- Harrison Ozoani
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, 5323, Port Harcourt, Choba Nigeria
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Science and Technology, Nsukka, Enugu State Nigeria
| | - Anthonet N. Ezejiofor
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, 5323, Port Harcourt, Choba Nigeria
| | - Kenneth O. Okolo
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Science and Technology, Nsukka, Enugu State Nigeria
| | - Chinna N. Orish
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Port Harcourt, PMB, 5323, Port Harcourt, Choba Nigeria
| | - Ana Cirovic
- Faculty of Medicine, Institute of Anatomy, University of Belgrade, Belgrade, Serbia
| | - Aleksandar Cirovic
- Faculty of Medicine, Institute of Anatomy, University of Belgrade, Belgrade, Serbia
| | - Orish E. Orisakwe
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, 5323, Port Harcourt, Choba Nigeria
- Provictoire Research Institute, Port Harcourt, Rivers State Nigeria
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2
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Sandalova T, Sala BM, Achour A. Structural aspects of chemical modifications in the MHC-restricted immunopeptidome; Implications for immune recognition. Front Chem 2022; 10:861609. [PMID: 36017166 PMCID: PMC9395651 DOI: 10.3389/fchem.2022.861609] [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: 01/24/2022] [Accepted: 07/12/2022] [Indexed: 11/26/2022] Open
Abstract
Significant advances in mass-spectroscopy (MS) have made it possible to investigate the cellular immunopeptidome, a large collection of MHC-associated epitopes presented on the surface of healthy, stressed and infected cells. These approaches have hitherto allowed the unambiguous identification of large cohorts of epitope sequences that are restricted to specific MHC class I and II molecules, enhancing our understanding of the quantities, qualities and origins of these peptide populations. Most importantly these analyses provide essential information about the immunopeptidome in responses to pathogens, autoimmunity and cancer, and will hopefully allow for future tailored individual therapies. Protein post-translational modifications (PTM) play a key role in cellular functions, and are essential for both maintaining cellular homeostasis and increasing the diversity of the proteome. A significant proportion of proteins is post-translationally modified, and thus a deeper understanding of the importance of PTM epitopes in immunopeptidomes is essential for a thorough and stringent understanding of these peptide populations. The aim of the present review is to provide a structural insight into the impact of PTM peptides on stability of MHC/peptide complexes, and how these may alter/modulate immune responses.
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Affiliation(s)
- Tatyana Sandalova
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Section for Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Benedetta Maria Sala
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Section for Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Adnane Achour
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Section for Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
- *Correspondence: Adnane Achour,
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3
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Long T, Liu L, Tao Y, Zhang W, Quan J, Zheng J, Hegemann JD, Uesugi M, Yao W, Tian H, Wang H. Light‐Controlled Tyrosine Nitration of Proteins. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tengfang Long
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center of Nanjing University Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University No. 163 Xianlin Ave Nanjing 210093 China
| | - Lei Liu
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center of Nanjing University Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University No. 163 Xianlin Ave Nanjing 210093 China
| | - Youqi Tao
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center of Nanjing University Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University No. 163 Xianlin Ave Nanjing 210093 China
| | - Wanli Zhang
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals School of Life Science and Technology China Pharmaceutical University Nanjing 211198 China
| | - Jiale Quan
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals School of Life Science and Technology China Pharmaceutical University Nanjing 211198 China
| | - Jie Zheng
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center of Nanjing University Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University No. 163 Xianlin Ave Nanjing 210093 China
| | - Julian D. Hegemann
- Institute of Chemistry Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
| | - Motonari Uesugi
- Institute for Chemical Research and Institute for Integrated Cell-Material Sciences (WPI-iCeMS) Kyoto University Uji Kyoto 611-0011 Japan
- School of Pharmacy Fudan University Shanghai 201203 China
| | - Wenbing Yao
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals School of Life Science and Technology China Pharmaceutical University Nanjing 211198 China
| | - Hong Tian
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals School of Life Science and Technology China Pharmaceutical University Nanjing 211198 China
| | - Huan Wang
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center of Nanjing University Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University No. 163 Xianlin Ave Nanjing 210093 China
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4
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Long T, Liu L, Tao Y, Zhang W, Quan J, Zheng J, Hegemann JD, Uesugi M, Yao W, Tian H, Wang H. Light-Controlled Tyrosine Nitration of Proteins. Angew Chem Int Ed Engl 2021; 60:13414-13422. [PMID: 33847040 DOI: 10.1002/anie.202102287] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/31/2021] [Indexed: 12/30/2022]
Abstract
Tyrosine nitration of proteins is one of the most important oxidative post-translational modifications in vivo. A major obstacle for its biochemical and physiological studies is the lack of efficient and chemoselective protein tyrosine nitration reagents. Herein, we report a generalizable strategy for light-controlled protein tyrosine nitration by employing biocompatible dinitroimidazole reagents. Upon 390 nm irradiation, dinitroimidazoles efficiently convert tyrosine residues into 3-nitrotyrosine residues in peptides and proteins with fast kinetics and high chemoselectivity under neutral aqueous buffer conditions. The incorporation of 3-nitrotyrosine residues enhances the thermostability of lasso peptide natural products and endows murine tumor necrosis factor-α with strong immunogenicity to break self-tolerance. The light-controlled time resolution of this method allows the investigation of the impact of tyrosine nitration on the self-assembly behavior of α-synuclein.
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Affiliation(s)
- Tengfang Long
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center of Nanjing University, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, No. 163 Xianlin Ave, Nanjing, 210093, China
| | - Lei Liu
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center of Nanjing University, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, No. 163 Xianlin Ave, Nanjing, 210093, China
| | - Youqi Tao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center of Nanjing University, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, No. 163 Xianlin Ave, Nanjing, 210093, China
| | - Wanli Zhang
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, 211198, China
| | - Jiale Quan
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, 211198, China
| | - Jie Zheng
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center of Nanjing University, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, No. 163 Xianlin Ave, Nanjing, 210093, China
| | - Julian D Hegemann
- Institute of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany
| | - Motonari Uesugi
- Institute for Chemical Research and Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Uji, Kyoto, 611-0011, Japan.,School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Wenbing Yao
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, 211198, China
| | - Hong Tian
- Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, School of Life Science and Technology, China Pharmaceutical University, Nanjing, 211198, China
| | - Huan Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center of Nanjing University, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, No. 163 Xianlin Ave, Nanjing, 210093, China
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5
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Ogata D, Roszik J, Oba J, Kim SH, Bassett RL, Haydu LE, Tanese K, Grimm EA, Ekmekcioglu S. The Expression of CD74-Regulated Inflammatory Markers in Stage IV Melanoma: Risk of CNS Metastasis and Patient Survival. Cancers (Basel) 2020; 12:cancers12123754. [PMID: 33327409 PMCID: PMC7764866 DOI: 10.3390/cancers12123754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/18/2022] Open
Abstract
Simple Summary Although many immunotherapies produce positive initial clinical responses, most advanced cancer patients recur so that there is an urgent need to identify and counteract both the intrinsic resistance as well as acquired mechanisms. During our studies on the mechanisms of resistance, we have identified a set of related protein markers, which we now employ to generate a useful signature of, associated with microenvironmental oxidative stress. Our study examines inflammatory marker expression in stage IV melanoma that are associated with survival outcome and risk of developing central nervous system (CNS) metastasis. Our data here presents CD74 as a prognostic tumor marker associated with good survival in stage IV melanoma. Additionally, the tumor cell nitrotyrosine (NT) expression predicts a greater risk of developing CNS metastasis in those patients. Our understanding of complex cancer cell and their response in the chronic inflammation environment would help us develop better treatments for melanoma. Abstract Innate inflammatory features have been found in melanoma tumors from patients at all stages, and molecular analysis has identified definitive inflammatory proteins expressed by tumors cells in patients who presents the worst prognosis. We have previously observed weakened outcomes in patients with constitutive expression of inducible nitric oxide synthase (iNOS), macrophage migration inhibitory factor (MIF) and improved outcomes with CD74 expression in stage III melanoma. In our current study, we tested our hypothesis on CD74-regulated inflammatory markers’ expression in stage IV melanoma tumors whether the signature is associated with survival outcome and/or risk of developing CNS metastasis. We retrospectively identified 315 patients with stage IV melanoma. In a tissue microarray (TMA), we examined the expression of cells with CD74, its receptor MIF, and downstream inflammatory markers iNOS, nitrotyrosine (NT), cyclooxygenase (COX)-2 and microsomal prostaglandin E synthase-1 (mPGES1). We analyzed the association of those inflammatory markers with overall survival time (OS) and time to CNS metastasis using Kaplan–Meier survival analyses. Our data validates CD74 as a useful prognostic tumor cell protein marker associated with favorable OS as in stage III melanomas, while the tumor NT expression strongly predicts an increased risk of developing CNS metastasis (p = 0.0008) in those patients.
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Affiliation(s)
- Dai Ogata
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.O.); (J.R.); (J.O.); (S.-H.K.); (E.A.G.)
- Department of Dermatologic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
| | - Jason Roszik
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.O.); (J.R.); (J.O.); (S.-H.K.); (E.A.G.)
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Junna Oba
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.O.); (J.R.); (J.O.); (S.-H.K.); (E.A.G.)
- Genomics Unit, Keio Cancer Center, School of Medicine, Keio University, Tokyo 106-8582, Japan
| | - Sun-Hee Kim
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.O.); (J.R.); (J.O.); (S.-H.K.); (E.A.G.)
| | - Roland L. Bassett
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Lauren E. Haydu
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Keiji Tanese
- Department of Dermatology, Keio University, Tokyo 160-8582, Japan;
| | - Elizabeth A. Grimm
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.O.); (J.R.); (J.O.); (S.-H.K.); (E.A.G.)
| | - Suhendan Ekmekcioglu
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.O.); (J.R.); (J.O.); (S.-H.K.); (E.A.G.)
- Correspondence:
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6
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3-Nitrotyrosine and related derivatives in proteins: precursors, radical intermediates and impact in function. Essays Biochem 2020; 64:111-133. [PMID: 32016371 DOI: 10.1042/ebc20190052] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/30/2019] [Accepted: 01/03/2020] [Indexed: 12/22/2022]
Abstract
Oxidative post-translational modification of proteins by molecular oxygen (O2)- and nitric oxide (•NO)-derived reactive species is a usual process that occurs in mammalian tissues under both physiological and pathological conditions and can exert either regulatory or cytotoxic effects. Although the side chain of several amino acids is prone to experience oxidative modifications, tyrosine residues are one of the preferred targets of one-electron oxidants, given the ability of their phenolic side chain to undergo reversible one-electron oxidation to the relatively stable tyrosyl radical. Naturally occurring as reversible catalytic intermediates at the active site of a variety of enzymes, tyrosyl radicals can also lead to the formation of several stable oxidative products through radical-radical reactions, as is the case of 3-nitrotyrosine (NO2Tyr). The formation of NO2Tyr mainly occurs through the fast reaction between the tyrosyl radical and nitrogen dioxide (•NO2). One of the key endogenous nitrating agents is peroxynitrite (ONOO-), the product of the reaction of superoxide radical (O2•-) with •NO, but ONOO--independent mechanisms of nitration have been also disclosed. This chemical modification notably affects the physicochemical properties of tyrosine residues and because of this, it can have a remarkable impact on protein structure and function, both in vitro and in vivo. Although low amounts of NO2Tyr are detected under basal conditions, significantly increased levels are found at pathological states related with an overproduction of reactive species, such as cardiovascular and neurodegenerative diseases, inflammation and aging. While NO2Tyr is a well-established stable oxidative stress biomarker and a good predictor of disease progression, its role as a pathogenic mediator has been laboriously defined for just a small number of nitrated proteins and awaits further studies.
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7
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Achour A, Broggini L, Han X, Sun R, Santambrogio C, Buratto J, Visentin C, Barbiroli A, De Luca CMG, Sormanni P, Moda F, De Simone A, Sandalova T, Grandori R, Camilloni C, Ricagno S. Biochemical and biophysical comparison of human and mouse beta-2 microglobulin reveals the molecular determinants of low amyloid propensity. FEBS J 2019; 287:546-560. [PMID: 31420997 DOI: 10.1111/febs.15046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 07/09/2019] [Accepted: 08/15/2019] [Indexed: 01/01/2023]
Abstract
The molecular bases of amyloid aggregation propensity are still poorly understood, especially for proteins that display a stable folded native structure. A prototypic example is human beta-2 microglobulin (β2m), which, when accumulated in patients, gives rise to dialysis-related amyloidosis. Interestingly, although the physiologic concentration of β2m in mice is five times higher than that found in human patients, no amyloid deposits are observed in mice. Moreover, murine β2m (mβ2m) not only displays a lower amyloid propensity both in vivo and in vitro but also inhibits the aggregation of human β2m in vitro. Here, we compared human and mβ2m for their aggregation propensity, ability to form soluble oligomers, stability, three-dimensional structure and dynamics. Our results indicate that mβ2m low-aggregation propensity is due to two concomitant aspects: the low-aggregation propensity of its primary sequence combined with the absence of high-energy amyloid-competent conformations under native conditions. The identification of the specific properties determining the low-aggregation propensity of mouse β2m will help delineate the molecular risk factors which cause a folded protein to aggregate.
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Affiliation(s)
- Adnane Achour
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute, Solna, Sweden.,Division of Infectious Diseases, Karolinska University Hospital, Solna, Sweden
| | - Luca Broggini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Italy
| | - Xiao Han
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute, Solna, Sweden.,Division of Infectious Diseases, Karolinska University Hospital, Solna, Sweden
| | - Renhua Sun
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute, Solna, Sweden.,Division of Infectious Diseases, Karolinska University Hospital, Solna, Sweden
| | - Carlo Santambrogio
- Dipartimento di Biotecnologie e Bioscienze, Università Milano-Bicocca, Italy
| | - Jeremie Buratto
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute, Solna, Sweden.,Division of Infectious Diseases, Karolinska University Hospital, Solna, Sweden
| | | | - Alberto Barbiroli
- Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente, Università degli Studi di Milano, Italy
| | - Chiara Maria Giulia De Luca
- Divisione di Neurologia 5 - Neuropatologia, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milano, Italy
| | | | - Fabio Moda
- Divisione di Neurologia 5 - Neuropatologia, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milano, Italy
| | | | - Tatyana Sandalova
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute, Solna, Sweden.,Division of Infectious Diseases, Karolinska University Hospital, Solna, Sweden
| | - Rita Grandori
- Dipartimento di Biotecnologie e Bioscienze, Università Milano-Bicocca, Italy
| | - Carlo Camilloni
- Dipartimento di Bioscienze, Università degli Studi di Milano, Italy
| | - Stefano Ricagno
- Dipartimento di Bioscienze, Università degli Studi di Milano, Italy
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8
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Ferrer-Sueta G, Campolo N, Trujillo M, Bartesaghi S, Carballal S, Romero N, Alvarez B, Radi R. Biochemistry of Peroxynitrite and Protein Tyrosine Nitration. Chem Rev 2018; 118:1338-1408. [DOI: 10.1021/acs.chemrev.7b00568] [Citation(s) in RCA: 292] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gerardo Ferrer-Sueta
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Nicolás Campolo
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Madia Trujillo
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Silvina Bartesaghi
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Sebastián Carballal
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Natalia Romero
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Beatriz Alvarez
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Rafael Radi
- Laboratorio
de Fisicoquímica Biológica, Facultad de
Ciencias, ‡Center for Free Radical and Biomedical Research, §Departamento de Bioquímica,
Facultad de Medicina, ∥Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
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9
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Hafstrand I, Badia-Martinez D, Josey BJ, Norström M, Buratto J, Pellegrino S, Duru AD, Sandalova T, Achour A. Crystal structures of H-2Db in complex with the LCMV-derived peptides GP92 and GP392 explain pleiotropic effects of glycosylation on antigen presentation and immunogenicity. PLoS One 2017; 12:e0189584. [PMID: 29253009 PMCID: PMC5734757 DOI: 10.1371/journal.pone.0189584] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 11/29/2017] [Indexed: 01/16/2023] Open
Abstract
Post-translational modifications significantly broaden the epitope repertoire for major histocompatibility class I complexes (MHC-I) and may allow viruses to escape immune recognition. Lymphocytic choriomeningitis virus (LCMV) infection of H-2b mice generates CD8+ CTL responses directed towards several MHC-I-restricted epitopes including the peptides GP92 (CSANNSHHYI) and GP392 (WLVTNGSYL), both with a N-glycosylation site. Interestingly, glycosylation has different effects on the immunogenicity and association capacity of these two epitopes to H-2Db. To assess the structural bases underlying these functional results, we determined the crystal structures of H-2Db in complex with GP92 (CSANNSHHYI) and GP392 (WLVTNGSYL) to 2.4 and 2.5 Å resolution, respectively. The structures reveal that while glycosylation of GP392 most probably impairs binding, the glycosylation of the asparagine residue in GP92, which protrudes towards the solvent, possibly allows for immune escape and/or forms a neo-epitope that may select for a different set of CD8 T cells. Altogether, the presented results provide a structural platform underlying the effects of post-translational modifications on epitope binding and/or immunogenicity, resulting in viral immune escape.
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Affiliation(s)
- Ida Hafstrand
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Daniel Badia-Martinez
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Benjamin John Josey
- NSU Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL, United State of America
- College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United State of America
| | - Melissa Norström
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Jérémie Buratto
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Sara Pellegrino
- DISFARM, Dipartimento di Scienze Farmaceutiche, Sezinone Chimica Generale e Organica, Università degli Studi, Milano, Italy
| | - Adil Doganay Duru
- NSU Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL, United State of America
- College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United State of America
| | - Tatyana Sandalova
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Adnane Achour
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
- * E-mail:
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Nitration of MOG diminishes its encephalitogenicity depending on MHC haplotype. J Neuroimmunol 2016; 303:1-12. [PMID: 28011088 DOI: 10.1016/j.jneuroim.2016.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 11/21/2016] [Accepted: 11/23/2016] [Indexed: 12/12/2022]
Abstract
Post-translational modifications of autoantigens are hypothesized to affect their immunogenicity. We here report that nitration of tyrosine 40 in Myelin Oligodendrocyte Glycoprotein (MOG) abrogates its encephalitogenicity both at protein and peptide levels in the experimental autoimmune encephalomyelitis (EAE) model in H2b C57BL/6 mice. Furthermore, nitrated MOG displays inferior antigen-specific proliferation of 2D2 splenocytes in vitro. Conversely, H2q DBA1 mice remain fully susceptible to EAE induction using nitrated MOG as the dominant epitope of H2q mice is unaltered. Molecular modeling analysis of the MOG35-55/H2-IAb complex and bioinformatics peptide binding predictions indicate that the lack of T cell reactivity towards nitrated MOG can be attributed to the inability of murine H2-IAb to efficiently present the altered peptide ligand of MOG35-55 because the nitrated tyrosine 40 cannot be accommodated in the p1 anchor pocket. In conclusion we demonstrate nitration as a relevant determinant affecting T cell recognition of carrier antigen depending on MHC haplotype. Our data have implications for understanding the role of post-translationally modified antigen in autoimmunity.
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Marquez EA, Kane KP. Identities of P2 and P3 Residues of H-2Kb-Bound Peptides Determine Mouse Ly49C Recognition. PLoS One 2015; 10:e0131308. [PMID: 26147851 PMCID: PMC4493100 DOI: 10.1371/journal.pone.0131308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 05/31/2015] [Indexed: 11/18/2022] Open
Abstract
Ly49 receptors can be peptide selective in their recognition of MHC-I-peptide complexes, affording them a level of discrimination beyond detecting the presence or absence of specific MHC-I allele products. Despite this ability, little is understood regarding the properties that enable some peptides, when bound to MHC-I molecules, to support Ly49 recognition, but not others. Using RMA-S target cells expressing MHC-I molecules loaded with individual peptides and effector cells expressing the ectodomain of the inhibitory Ly49C receptor, we found that two adjacent amino acid residues, P2 and P3, both buried in the peptide binding groove of H-2Kb, determine mouse Ly49C specificity. If both are aliphatic residues, this is supportive. Whereas, small amino acids at P2 and aromatic amino acids at the P3 auxiliary anchor residue are detrimental to Ly49C recognition. These results resemble those with a rat Ly49 where the identity of a peptide anchor residue determines recognition, suggesting that dependence on specific peptide residues buried in the MHC-I peptide-binding groove may be fundamental to Ly49 peptide selectivity and recognition.
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Affiliation(s)
- Elsa A. Marquez
- Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada
| | - Kevin P. Kane
- Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada
- * E-mail:
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Warnecke A, Sandalova T, Achour A, Harris RA. PyTMs: a useful PyMOL plugin for modeling common post-translational modifications. BMC Bioinformatics 2014; 15:370. [PMID: 25431162 PMCID: PMC4256751 DOI: 10.1186/s12859-014-0370-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 10/30/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Post-translational modifications (PTMs) constitute a major aspect of protein biology, particularly signaling events. Conversely, several different pathophysiological PTMs are hallmarks of oxidative imbalance or inflammatory states and are strongly associated with pathogenesis of autoimmune diseases or cancers. Accordingly, it is of interest to assess both the biological and structural effects of modification. For the latter, computer-based modeling offers an attractive option. We thus identified the need for easily applicable modeling options for PTMs. RESULTS We developed PyTMs, a plugin implemented with the commonly used visualization software PyMOL. PyTMs enables users to introduce a set of common PTMs into protein/peptide models and can be used to address research questions related to PTMs. Ten types of modification are currently supported, including acetylation, carbamylation, citrullination, cysteine oxidation, malondialdehyde adducts, methionine oxidation, methylation, nitration, proline hydroxylation and phosphorylation. Furthermore, advanced settings integrate the pre-selection of surface-exposed atoms, define stereochemical alternatives and allow for basic structure optimization of the newly modified residues. CONCLUSION PyTMs is a useful, user-friendly modelling plugin for PyMOL. Advantages of PyTMs include standardized generation of PTMs, rapid time-to-result and facilitated user control. Although modeling cannot substitute for conventional structure determination it constitutes a convenient tool that allows uncomplicated exploration of potential implications prior to experimental investments and basic explanation of experimental data. PyTMs is freely available as part of the PyMOL script repository project on GitHub and will further evolve. Graphical Abstract PyTMs is a useful PyMOL plugin for modeling common post-translational modifications.
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Affiliation(s)
- Andreas Warnecke
- Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Applied Immunology & Immunotherapy, L8:04, Karolinska Hospital, SE-171 76, Stockholm, Sweden.
| | - Tatyana Sandalova
- Department of Medicine Solna, Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden.
| | - Adnane Achour
- Department of Medicine Solna, Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden.
| | - Robert A Harris
- Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Applied Immunology & Immunotherapy, L8:04, Karolinska Hospital, SE-171 76, Stockholm, Sweden.
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Chemistry and biology of biomolecule nitration. ACTA ACUST UNITED AC 2014; 19:1086-92. [PMID: 22999877 DOI: 10.1016/j.chembiol.2012.07.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Revised: 07/25/2012] [Accepted: 07/27/2012] [Indexed: 12/27/2022]
Abstract
Posttranslational modifications of proteins play key roles in the regulation of biological processes and lead to various physiological responses. In recent years, a number of analytical technologies have been developed to help understand the diversity and disease relevance of these modifications. The main areas of focus have included phosphorylation, cysteine redox chemistry, and transformations mediated directly by oxidative stress. However, the nitration of biomolecules is an exciting and relatively understudied area of research. Reactive nitrogen species generated in various disease states can create nitrated biomolecules, and we are only beginning to understand the potential implications of these species. This review explores some of the recent advances in current knowledge concerning the chemistry and biology of nitrated biomolecules.
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De Sanctis F, Sandri S, Ferrarini G, Pagliarello I, Sartoris S, Ugel S, Marigo I, Molon B, Bronte V. The emerging immunological role of post-translational modifications by reactive nitrogen species in cancer microenvironment. Front Immunol 2014; 5:69. [PMID: 24605112 PMCID: PMC3932549 DOI: 10.3389/fimmu.2014.00069] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 02/08/2014] [Indexed: 12/18/2022] Open
Abstract
Under many inflammatory contexts, such as tumor progression, systemic and peripheral immune response is tailored by reactive nitrogen species (RNS)-dependent post-translational modifications, suggesting a biological function for these chemical alterations. RNS modify both soluble factors and receptors essential to induce and maintain a tumor-specific immune response, creating a “chemical barrier” that impairs effector T cell infiltration and functionality in tumor microenvironment and supports the escape phase of cancer. RNS generation during tumor growth mainly depends on nitric oxide production by both tumor cells and tumor-infiltrating myeloid cells that constitutively activate essential metabolic pathways of l-arginine catabolism. This review provides an overview of the potential immunological and biological role of RNS-induced modifications and addresses new approaches targeting RNS either in search of novel biomarkers or to improve anti-cancer treatment.
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Affiliation(s)
- Francesco De Sanctis
- Immunology Section, Department of Pathology and Diagnostics, University of Verona , Verona , Italy
| | - Sara Sandri
- Immunology Section, Department of Pathology and Diagnostics, University of Verona , Verona , Italy
| | - Giovanna Ferrarini
- Immunology Section, Department of Pathology and Diagnostics, University of Verona , Verona , Italy
| | - Irene Pagliarello
- Immunology Section, Department of Pathology and Diagnostics, University of Verona , Verona , Italy
| | - Silvia Sartoris
- Immunology Section, Department of Pathology and Diagnostics, University of Verona , Verona , Italy
| | - Stefano Ugel
- Immunology Section, Department of Pathology and Diagnostics, University of Verona , Verona , Italy
| | - Ilaria Marigo
- Istituto Oncologico Veneto, Istituto Di Ricovero e Cura a Carattere Scientifico , Padua , Italy
| | - Barbara Molon
- Venetian Institute of Molecular Medicine , Padua , Italy
| | - Vincenzo Bronte
- Immunology Section, Department of Pathology and Diagnostics, University of Verona , Verona , Italy
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Saini SK, Abualrous ET, Tigan AS, Covella K, Wellbrock U, Springer S. Not all empty MHC class I molecules are molten globules: Tryptophan fluorescence reveals a two-step mechanism of thermal denaturation. Mol Immunol 2013; 54:386-96. [DOI: 10.1016/j.molimm.2013.01.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 12/26/2012] [Accepted: 01/04/2013] [Indexed: 11/27/2022]
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