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Santana SS, Pitanga TN, de Santana JM, Zanette DL, Vieira JDJ, Yahouédéhou SCMA, Adanho CSA, Viana SDM, Luz NF, Borges VM, Goncalves MS. Hydroxyurea Scavenges Free Radicals and Induces the Expression of Antioxidant Genes in Human Cell Cultures Treated With Hemin. Front Immunol 2020; 11:1488. [PMID: 32765515 PMCID: PMC7380266 DOI: 10.3389/fimmu.2020.01488] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
The excessive release of heme during hemolysis contributes to the severity of sickle cell anemia (SCA) by exacerbating hemoglobin S (HbS) autoxidation, inflammation and systemic tissue damage. The present study investigated the effect of hydroxyurea (HU) on free radical neutralization and its stimulation of antioxidant genes in human peripheral blood mononuclear cells (PBMC) and human umbilical vein endothelial cells (HUVEC) in the presence or absence of hemin. HU (100 and 200 μM) significantly reduced the production of intracellular reactive oxygen species (ROS) induced by hemin at 70 μM in HUVEC. HUVECs treated with HU+hemin presented significant increases in nitric oxide (NO) production in culture supernatants. HU alone or in combination with hemin promoted the induction of superoxide dismutase-1 (SOD1) and glutathione disulfide-reductase (GSR) in HUVECs and PBMCs, and glutathione peroxidase (GPX1) in PBMCs. Microarray analysis performed in HUVECs indicated that HU induces increased expression of genes involved in the antioxidant response system: SOD2, GSR, microsomal glutathione S-transferase (MGST1), glutathione S-transferase mu 2 (GSTM2), carbonyl reductase 1 (CBR1) and klotho B (KLB). Significant increases in expression were observed in genes with kinase activity: protein kinase C beta (PRKCB), zeta (PRKCZ) and phosphatidylinositol-4-phosphate 3-kinase catalytic subunit type 2 beta (PIK3C2B). HU also induced a significant increase in expression of the gene p62/sequestosome (p62/SQSTM1) and a significant decrease in the expression of the transcriptional factor BACH1 in HUVECs. Upstream analysis predicted the activation of Jun, miR-155-5p and mir-141-3p. These results suggest that HU directly scavenges free radicals and induces the expression of antioxidant genes via induction of the Nrf2 signaling pathway.
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Affiliation(s)
- Sânzio Silva Santana
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (IGM/FIOCRUZ-BA), Salvador, Brazil.,Faculdade de Biomedicina, Universidade Católica do Salvador (UCSal), Salvador, Brazil
| | - Thassila Nogueira Pitanga
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (IGM/FIOCRUZ-BA), Salvador, Brazil.,Faculdade de Biomedicina, Universidade Católica do Salvador (UCSal), Salvador, Brazil
| | | | | | | | | | | | | | - Nivea Farias Luz
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (IGM/FIOCRUZ-BA), Salvador, Brazil
| | - Valeria Matos Borges
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (IGM/FIOCRUZ-BA), Salvador, Brazil
| | - Marilda Souza Goncalves
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (IGM/FIOCRUZ-BA), Salvador, Brazil.,Faculdade de Farmácia, Universidade Federal da Bahia (UFBA), Salvador, Brazil
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Functionalized nitrogen doped graphene quantum dots and bimetallic Au/Ag core-shell decorated imprinted polymer for electrochemical sensing of anticancerous hydroxyurea. Biosens Bioelectron 2019; 127:10-18. [DOI: 10.1016/j.bios.2018.11.055] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/19/2018] [Accepted: 11/30/2018] [Indexed: 11/18/2022]
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Legrand T, Rakotoson MG, Galactéros F, Bartolucci P, Hulin A. Determination of hydroxyurea in human plasma by HPLC-UV using derivatization with xanthydrol. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1064:85-91. [DOI: 10.1016/j.jchromb.2017.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/19/2017] [Accepted: 09/06/2017] [Indexed: 11/30/2022]
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