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Ramos LD, Mantovani MC, Sartori A, Dutra F, Stevani CV, Bechara EJH. Aerobic co-oxidation of hemoglobin and aminoacetone, a putative source of methylglyoxal. Free Radic Biol Med 2021; 166:178-186. [PMID: 33636334 DOI: 10.1016/j.freeradbiomed.2021.02.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/10/2021] [Accepted: 02/13/2021] [Indexed: 10/22/2022]
Abstract
Aminoacetone (1-aminopropan-2-one), a putative minor biological source of methylglyoxal, reacts like other α-aminoketones such as 6-aminolevulinic acid (first heme precursor) and 1,4-diaminobutanone (a microbicide) yielding electrophilic α-oxoaldehydes, ammonium ion and reactive oxygen species by metal- and hemeprotein-catalyzed aerobic oxidation. A plethora of recent reports implicates triose phosphate-generated methylglyoxal in protein crosslinking and DNA addition, leading to age-related disorders, including diabetes. Importantly, methylglyoxal-treated hemoglobin adds four water-exposed arginine residues, which may compromise its physiological role and potentially serve as biomarkers for diabetes. This paper reports on the co-oxidation of aminoacetone and oxyhemoglobin in normally aerated phosphate buffer, leading to structural changes in hemoglobin, which can be attributed to the addition of aminoacetone-produced methylglyoxal to the protein. Hydroxyl radical-promoted chemical damage to hemoglobin may also occur in parallel, which is suggested by EPR-spin trapping studies with 5,5-dimethyl-1-pyrroline-N-oxide and ethanol. Concomitantly, oxyhemoglobin is oxidized to methemoglobin, as indicated by characteristic CD spectral changes in the Soret and visible regions. Overall, these findings may contribute to elucidate the molecular mechanisms underlying human diseases associated with hemoglobin dysfunctions and with aminoacetone in metabolic alterations related to excess glycine and threonine.
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Affiliation(s)
- Luiz D Ramos
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil; Centro Universitário Anhanguera, UniA, Santo André, SP, Brazil
| | - Mariana C Mantovani
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil; Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP, Brazil; Instituto de Pesquisas Energéticas e Nucleares, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Adriano Sartori
- Centro de Ciências Exatas e Tecnologia, Universidade Cruzeiro Do Sul, São Paulo, SP, Brazil
| | - Fernando Dutra
- Centro de Ciências Exatas e Tecnologia, Universidade Cruzeiro Do Sul, São Paulo, SP, Brazil
| | - Cassius V Stevani
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Universidade de São Paulo, São Paulo, SP, Brazil; Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP, Brazil.
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Gonçalves LCP, Massari J, Licciardi S, Prado FM, Linares E, Klassen A, Tavares MFM, Augusto O, Di Mascio P, Bechara EJH. Singlet oxygen generation by the reaction of acrolein with peroxynitrite via a 2-hydroxyvinyl radical intermediate. Free Radic Biol Med 2020; 152:83-90. [PMID: 32145303 DOI: 10.1016/j.freeradbiomed.2020.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/26/2020] [Accepted: 03/02/2020] [Indexed: 01/10/2023]
Abstract
Acrolein (2-propenal) is an environmental pollutant, food contaminant, and endogenous toxic by-product formed in the thermal decomposition and peroxidation of lipids, proteins, and carbohydrates. Like other α,β-unsaturated aldehydes, acrolein undergoes Michael addition of nucleophiles such as basic amino acids residues of proteins and nucleobases, triggering aging associated disorders. Here, we show that acrolein is also a potential target of the potent biological oxidant, nitrosating and nitrating agent peroxynitrite. In vitro studies revealed the occurrence of 1,4-addition of peroxynitrite (k2 = 6 × 103 M-1 s-1, pH 7.2, 25 °C) to acrolein in air-equilibrated phosphate buffer. This is attested by acrolein concentration-dependent oxygen uptake, peroxynitrite consumption, and generation of formaldehyde and glyoxal as final products. These products are predicted to be originated from the Russell termination of •OOCH=CH(OH) radical which also includes molecular oxygen at the singlet delta state (O21Δg). Accordingly, EPR spin trapping studies with the 2,6-nitrosobenzene-4-sulfonate ion (DBNBS) revealed a 6-line spectrum attributable to the 2-hydroxyvinyl radical adduct. Singlet oxygen was identified by its characteristic monomolecular IR emission at 1,270 nm in deuterated buffer, which was expectedly quenched upon addition of water and sodium azide. These data represent the first report on singlet oxygen creation from a vinylperoxyl radical, previously reported for alkyl- and formylperoxyl radicals, and may contribute to better understand the adverse acrolein behavior in vivo.
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Affiliation(s)
- Leticia C P Gonçalves
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Júlio Massari
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Saymon Licciardi
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil; Departamento Ciências Exatas e da Terra, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP, Brazil
| | - Fernanda M Prado
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Edlaine Linares
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Aline Klassen
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marina F M Tavares
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Ohara Augusto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Paolo Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Etelvino J H Bechara
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil; Departamento Ciências Exatas e da Terra, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP, Brazil.
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El Jamal SM, Taylor EB, Abd Elmageed ZY, Alamodi AA, Selimovic D, Alkhateeb A, Hannig M, Hassan SY, Santourlidis S, Friedlander PL, Haikel Y, Vijaykumar S, Kandil E, Hassan M. Interferon gamma-induced apoptosis of head and neck squamous cell carcinoma is connected to indoleamine-2,3-dioxygenase via mitochondrial and ER stress-associated pathways. Cell Div 2016; 11:11. [PMID: 27486476 PMCID: PMC4969639 DOI: 10.1186/s13008-016-0023-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 06/15/2016] [Indexed: 12/25/2022] Open
Abstract
Background Tumor response to immunotherapy is the consequence of a concerted crosstalk between cytokines and effector cells. Interferon gamma (IFNγ) is one of the common cytokines coordinating tumor immune response and the associated biological consequences. Although the role of IFNγ in the modulation of tumor immunity has been widely documented, the mechanisms regulating IFNγ-induced cell death, during the course of immune therapy, is not described in detail. Results IFNγ triggered apoptosis of CLS-354 and RPMI 2650 cells, enhanced the protein expression and activation of indoleamine 2,3-dioxygenase (IDO), and suppressed the basal expression of heme oxygenase-1(HO-1). Interestingly, IFNγ induced the loss of mitochondrial membrane potential (Δψm) and increased accumulation of reactive oxygen species (ROS). The cytokine also induced the activation of Janus kinase (JAK)/Signal Transducer and Activator of Transcription (STAT)1, apoptosis signal-regulating kinase 1 (ASK1), p38, c-jun-N-terminal kinase (JNK) and NF-κB pathways and the transcription factors STAT1, interferon regulatory factor 1 (IRF1), AP-1, ATF-2, NF-κB and p53, and expression of Noxa protein. Furthermore, IFNγ was found to trigger endoplasmic reticulum (ER) stress as evidenced by the cleavage of caspase-4 and activation of protein kinase RNA-like endoplasmic reticulum kinase (PERK) and inositol-requiring-1α (IRE1α) pathways. Using specific inhibitors, we identified a potential role for IDO as apoptotic mediator in the regulation of IFNγ-induced apoptosis of head and neck squamous cell carcinoma (HNSCC) cells via Noxa-mediated mitochondrial dysregulation and ER stress. Conclusion In addition to the elucidation of the role of IDO in the modulation of apoptosis, our study provides new insights into the molecular mechanisms of IFNγ-induced apoptosis of HNSCC cells during the course of immune therapy.
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Affiliation(s)
- Siraj M El Jamal
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS 39216 USA
| | - Erin B Taylor
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS 39216 USA
| | | | - Abdulhadi A Alamodi
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS 39216 USA
| | - Denis Selimovic
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Kirrberger Str. 100, 66421 Homburg/Saar, Germany ; Division of Oral Health Science, Department of Restorative Dentistry, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Abdulaziz Alkhateeb
- Clinic of Dermatology, University Hospital of Aachen, Puwelstrasse 30, Aachen, Germany ; College of Medicine, King Faisal University, Alhofuf, Saudi Arabia
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Kirrberger Str. 100, 66421 Homburg/Saar, Germany
| | - Sofie Y Hassan
- Clinic of Dermatology, University Hospital of Aachen, Puwelstrasse 30, Aachen, Germany
| | - Simeon Santourlidis
- Epigenetics Core Laboratory, Institute of Transplantation Diagnostics and Cell Therapeutics, University Hospital of Duesseldorf, Heinrich-Heine-University of Duesseldorf, Mooren Str.5, 40225 Duesseldorf, Germany
| | - Paul L Friedlander
- Departments of Surgery, Tulane University School of Medicine, New Orleans, LA 70112 USA
| | - Youssef Haikel
- Institut National de la Santé et de la Recherche Médicale, University of Strasbourg, 67000 Strasbourg, France ; Department of Operative Dentistry and Endodontics, Dental Faculty, University of Strasbourg, 67000 Strasbourg, France
| | - Srinivasan Vijaykumar
- Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS 39216 USA ; Cancer Institute, University of Mississippi Medical Center, Jackson, MS 39216 USA
| | - Emad Kandil
- Departments of Surgery, Tulane University School of Medicine, New Orleans, LA 70112 USA
| | - Mohamed Hassan
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS 39216 USA ; Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Kirrberger Str. 100, 66421 Homburg/Saar, Germany ; Institut National de la Santé et de la Recherche Médicale, University of Strasbourg, 67000 Strasbourg, France ; Cancer Institute, University of Mississippi Medical Center, Jackson, MS 39216 USA
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