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Cao H, Li Z, Jin T, He S, Liu S, Li L, Wang Y, Gong Y, Wang G, Yang F, Dong W. Maslinic acid supplementation prevents di(2-ethylhexyl) phthalate-induced apoptosis via PRDX6 in peritubular myoid cells of Chinese forest musk deer. J Environ Sci (China) 2024; 143:47-59. [PMID: 38644023 DOI: 10.1016/j.jes.2023.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 04/23/2024]
Abstract
Chinese forest musk deer (FMD), an endangered species, have exhibited low reproductive rates even in captivity due to stress conditions. Investigation revealed the presence of di(2-ethylhexyl) phthalate (DEHP), an environmental endocrine disruptor, in the serum and skin of captive FMDs. Feeding FMDs with maslinic acid (MA) has been observed to alleviate the stress response and improve reproductive rates, although the precise molecular mechanisms remain unclear. Therefore, this study aims to investigate the molecular mechanisms underlying the alleviation of DEHP-induced oxidative stress and cell apoptosis in primary peritubular myoid cells (PMCs) through MA intake. Primary PMCs were isolated and exposed to DEHP in vitro. The results demonstrated that DEHP significantly suppressed antioxidant levels and promoted cell apoptosis in primary PMCs. Moreover, interfering with the expression of PRDX6 was found to induce excessive reactive oxygen species (ROS) production and cell apoptosis in primary PMCs. Supplementation with MA significantly upregulated the expression of PRDX6, thereby attenuating DEHP-induced oxidative stress and cell apoptosis in primary PMCs. These findings provide a theoretical foundation for mitigating stress levels and enhancing reproductive capacity of in captive FMDs.
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Affiliation(s)
- Heran Cao
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China
| | - Zhenpeng Li
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China; Shaanxi Qiyuan-Times Agri-Tech Development Co. Ltd., Shaanxi 725000, China
| | - Tianqi Jin
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China; Biology Research Centre of Qin-Mountains Wildlife, Northwest A&F University, Shaanxi 712100, China
| | - Shuyang He
- College of Forestry, Northwest A&F University, Shaanxi 712100, China; Biology Research Centre of Qin-Mountains Wildlife, Northwest A&F University, Shaanxi 712100, China
| | - Shujuan Liu
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China
| | - Long Li
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China; Biology Research Centre of Qin-Mountains Wildlife, Northwest A&F University, Shaanxi 712100, China
| | - Yang Wang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China; Biology Research Centre of Qin-Mountains Wildlife, Northwest A&F University, Shaanxi 712100, China; Shaanxi Qiyuan-Times Agri-Tech Development Co. Ltd., Shaanxi 725000, China
| | - Ye Gong
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China; Shaanxi Qiyuan-Times Agri-Tech Development Co. Ltd., Shaanxi 725000, China
| | - Gang Wang
- Shaanxi Qiyuan-Times Agri-Tech Development Co. Ltd., Shaanxi 725000, China
| | - Fangxia Yang
- College of Forestry, Northwest A&F University, Shaanxi 712100, China; Biology Research Centre of Qin-Mountains Wildlife, Northwest A&F University, Shaanxi 712100, China.
| | - Wuzi Dong
- College of Animal Science and Technology, Northwest A&F University, Shaanxi 712100, China; Biology Research Centre of Qin-Mountains Wildlife, Northwest A&F University, Shaanxi 712100, China
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Xiong J, Zhou R, Deng X. PRDX6 alleviated heart failure by inhibiting doxorubicin-induced ferroptosis through the JAK2/STAT1 pathway inactivation. In Vitro Cell Dev Biol Anim 2024; 60:354-364. [PMID: 38530594 DOI: 10.1007/s11626-024-00889-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/26/2024] [Indexed: 03/28/2024]
Abstract
Peroxiredoxin 6 (PRDX6) is a protective biomarker associated with ferroptosis in heart failure (HF). This study investigated the specific mechanism of PRDX6 on doxorubicin (DOX)-induced ferroptosis in HF. Wistar rats and H9c2 cells were induced by DOX to construct HF models. Pathological changes and collagen deposition in myocardium were investigated using HE and Masson staining. PRDX6 levels, indexes of ferroptosis, and JAK2/STAT1 pathway were detected by qRT-PCR, Western blot, and biochemical kits. DOX promoted heart weight/body weight, increased inflammation and collagen deposition, increased PTGS2 and MDA levels, and decreased SLC7A11, GPX4, FTH1, and PRDX6 levels in myocardium. PRDX6 overexpression reduced PTGS2, MDA, Fe2+, and LDH levels, inhibited JAK2 and STAT1 phosphorylation, and increased SLC7A11, GPX4, and FTH1 levels in DOX-added H9c2 cells. RO8191 and erastin reversed the inhibition of PRDX6 on ferroptosis through the JAK2/STAT1 pathway. Overall, PRDX6 alleviated HF by inhibiting DOX-induced ferroptosis through the JAK2/STAT1 pathway inactivation.
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Affiliation(s)
- Jie Xiong
- Department of Cardiology, Jiujiang First People's Hospital, Jiujiang, 332000, Jiangxi, China
| | - Rong Zhou
- Department of Internal Medicine, Affiliated Hospital of Jiujiang University, Jiujiang, 332000, Jiangxi, China
| | - Xu Deng
- Department of Cardiology, the Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China.
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Chen Z, Lin J, Wang H, Wang J, Zhang Z. Expression and clinical role of PRDX6 in lung adenocarcinoma. J Int Med Res 2024; 52:3000605241236276. [PMID: 38506348 PMCID: PMC10956161 DOI: 10.1177/03000605241236276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 02/14/2024] [Indexed: 03/21/2024] Open
Abstract
OBJECTIVE To explore the levels of expression and clinical role of peroxiredoxin 6 (PRDX6) in lung adenocarcinoma. METHODS This retrospective study used a series of bioinformatics methods to detect the levels of expression of and mutations in the PRDX6 gene in a range of cancers and lung adenocarcinoma. Immunohistochemistry was used to verify the levels of expression of PRDX6 protein in samples of lung adenocarcinoma compared with normal adjacent tissue. The effect of PRDX6 gene knockdown on the in vitro proliferation of a lung adenocarcinoma cell line was measured. Bioinformatics methods were used to determine the diagnostic value and impact on survival of the PRDX6 gene in patients with lung adenocarcinoma. RESULTS The results showed that the PRDX6 gene was highly expressed in lung adenocarcinoma and there were five mutations at different sites on the gene. PRDX6 promoted the proliferation of the lung adenocarcinoma cell line. The survival duration of lung adenocarcinoma patients with high levels of PRDX6 gene expression was significantly shorter than that of patients with low PRDX6 gene expression. CONCLUSION PRDX6 is highly expressed in lung adenocarcinoma and higher levels of expression of the PRDX6 gene were associated with a poorer prognosis.
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Affiliation(s)
- Zixin Chen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Centre of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Junjun Lin
- Department of Clinical Laboratory, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Huifang Wang
- Department of Clinical Laboratory, Affiliated Huishan Hospital of Xinglin College, Nantong University, Wuxi Huishan District People’s Hospital, Wuxi, Jiangsu Province, China
| | - Jing Wang
- Department of Clinical Laboratory, Affiliated Huishan Hospital of Xinglin College, Nantong University, Wuxi Huishan District People’s Hospital, Wuxi, Jiangsu Province, China
| | - Zhou Zhang
- Department of Clinical Laboratory, Affiliated Huishan Hospital of Xinglin College, Nantong University, Wuxi Huishan District People’s Hospital, Wuxi, Jiangsu Province, China
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Bidooki SH, Sánchez-Marco J, Martínez-Beamonte R, Herrero-Continente T, Navarro MA, Rodríguez-Yoldi MJ, Osada J. Endoplasmic Reticulum Protein TXNDC5 Interacts with PRDX6 and HSPA9 to Regulate Glutathione Metabolism and Lipid Peroxidation in the Hepatic AML12 Cell Line. Int J Mol Sci 2023; 24:17131. [PMID: 38138960 PMCID: PMC10743020 DOI: 10.3390/ijms242417131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 11/29/2023] [Accepted: 12/03/2023] [Indexed: 12/24/2023] Open
Abstract
Non-alcoholic fatty liver disease or steatosis is an accumulation of fat in the liver. Increased amounts of non-esterified fatty acids, calcium deficiency, or insulin resistance may disturb endoplasmic reticulum (ER) homeostasis, which leads to the abnormal accumulation of misfolded proteins, activating the unfolded protein response. The ER is the primary location site for chaperones like thioredoxin domain-containing 5 (TXNDC5). Glutathione participates in cellular oxidative stress, and its interaction with TXNDC5 in the ER may decrease the disulfide bonds of this protein. In addition, glutathione is utilized by glutathione peroxidases to inactivate oxidized lipids. To characterize proteins interacting with TXNDC5, immunoprecipitation and liquid chromatography-mass spectrometry were used. Lipid peroxidation, reduced glutathione, inducible phospholipase A2 (iPLA2) and hepatic transcriptome were assessed in the AML12 and TXNDC5-deficient AML12 cell lines. The results showed that HSPA9 and PRDX6 interact with TXNDC5 in AML12 cells. In addition, TXNDC5 deficiency reduced the protein levels of PRDX6 and HSPA9 in AML12. Moreover, lipid peroxidation, glutathione and iPLA2 activities were significantly decreased in TXNDC5-deficient cells, and to find the cause of the PRDX6 protein reduction, proteasome suppression revealed no considerable effect on it. Finally, hepatic transcripts connected to PRDX6 and HSPA9 indicated an increase in the Dnaja3, Mfn2 and Prdx5 and a decrease in Npm1, Oplah, Gstp3, Gstm6, Gstt1, Serpina1a, Serpina1b, Serpina3m, Hsp90aa1 and Rps14 mRNA levels in AML12 KO cells. In conclusion, the lipid peroxidation system and glutathione mechanism in AML12 cells may be disrupted by the absence of TXNDC5, a novel protein-protein interacting partner of PRDX6 and HSPA9.
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Affiliation(s)
- Seyed Hesamoddin Bidooki
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón, Universidad de Zaragoza, E-50013 Zaragoza, Spain; (S.H.B.); (J.S.-M.); (R.M.-B.); (T.H.-C.); (M.A.N.)
- CNRS, IPREM, Universite de Pau et des Pays de l’Adour, E2S UPPA, 64 000 Pau, France
- MANTA—Marine Materials Research Group, Universite de Pau et des Pays de l’Adour, E2S UPPA, 64 600 Anglet, France
| | - Javier Sánchez-Marco
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón, Universidad de Zaragoza, E-50013 Zaragoza, Spain; (S.H.B.); (J.S.-M.); (R.M.-B.); (T.H.-C.); (M.A.N.)
| | - Roberto Martínez-Beamonte
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón, Universidad de Zaragoza, E-50013 Zaragoza, Spain; (S.H.B.); (J.S.-M.); (R.M.-B.); (T.H.-C.); (M.A.N.)
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain;
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - Tania Herrero-Continente
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón, Universidad de Zaragoza, E-50013 Zaragoza, Spain; (S.H.B.); (J.S.-M.); (R.M.-B.); (T.H.-C.); (M.A.N.)
| | - María A. Navarro
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón, Universidad de Zaragoza, E-50013 Zaragoza, Spain; (S.H.B.); (J.S.-M.); (R.M.-B.); (T.H.-C.); (M.A.N.)
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain;
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - María J. Rodríguez-Yoldi
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain;
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
- Departamento de Farmacología, Fisiología, Medicina Legal y Forense, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón, Universidad de Zaragoza, E-50013 Zaragoza, Spain
| | - Jesús Osada
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación Sanitaria de Aragón, Universidad de Zaragoza, E-50013 Zaragoza, Spain; (S.H.B.); (J.S.-M.); (R.M.-B.); (T.H.-C.); (M.A.N.)
- Instituto Agroalimentario de Aragón, CITA-Universidad de Zaragoza, E-50013 Zaragoza, Spain;
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
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LAGAL DJ, BÁRCENA JA, REQUEJO-AGUILAR R, PADILLA CA, LETO TL. NOX1 and PRDX6 synergistically support migration and invasiveness of hepatocellular carcinoma cells through enhanced NADPH oxidase activity. Adv Redox Res 2023; 9:100080. [PMID: 37900981 PMCID: PMC10611439 DOI: 10.1016/j.arres.2023.100080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
The NADPH oxidase 1 (NOX1) complex formed by proteins NOX1, p22phox, NOXO1, NOXA1, and RAC1 plays an important role in the generation of superoxide and other reactive oxygen species (ROS) which are involved in normal and pathological cell functions due to their effects on diverse cell signaling pathways. Cell migration and invasiveness are at the origin of tumor metastasis during cancer progression which involves a process of cellular de-differentiation known as the epithelial-mesenchymal transition (EMT). During EMT cells lose their polarized epithelial phenotype and express mesenchymal marker proteins that enable cytoskeletal rearrangements promoting cell migration, expression and activation of matrix metalloproteinases (MMPs), tissue remodeling, and cell invasion during metastasis. In this work, we explored the importance of the peroxiredoxin 6 (PRDX6)-NOX1 enzyme interaction leading to NOXA1 protein stabilization and increased levels of superoxide produced by NOX in hepatocarcinoma cells. This increase was accompanied by higher levels of N-cadherin and MMP2, correlating with a greater capacity for cell migration and invasiveness of SNU475 hepatocarcinoma cells. The increase in superoxide and the associated downstream effects on cancer progression were suppressed when phospholipase A2 or peroxidase activities of PRDX6 were abolished by site-directed mutagenesis, reinforcing the importance of these catalytic activities in supporting NOX1-based superoxide generation. Overall, these results demonstrate a clear functional cooperation between NOX1 and PRDX6 catalytic activities which generate higher levels of ROS production, resulting in a more aggressive tumor phenotype.
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Affiliation(s)
- Daniel J. LAGAL
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health. Bethesda, MD, USA
- University of Córdoba, Biochemistry and Molecular Biology Department. Córdoba, Spain
| | - J. Antonio BÁRCENA
- University of Córdoba, Biochemistry and Molecular Biology Department. Córdoba, Spain
- Maimónides Biomedical Research Institute of Córdoba (IMIBIC), Spain
| | - Raquel REQUEJO-AGUILAR
- University of Córdoba, Biochemistry and Molecular Biology Department. Córdoba, Spain
- Maimónides Biomedical Research Institute of Córdoba (IMIBIC), Spain
| | - C. Alicia PADILLA
- University of Córdoba, Biochemistry and Molecular Biology Department. Córdoba, Spain
- Maimónides Biomedical Research Institute of Córdoba (IMIBIC), Spain
| | - Thomas L. LETO
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health. Bethesda, MD, USA
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Bu H, Wang B, Wu Y, Li P, Cui Y, Jiang X, Yu X, Liu B, Tang M. Curcumin strengthens a spontaneous self-protective mechanism-SP1/ PRDX6 pathway, against di-n-butyl phthalate-induced testicular ferroptosis damage. Environ Sci Pollut Res Int 2023; 30:122165-122181. [PMID: 37966654 DOI: 10.1007/s11356-023-30962-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 11/05/2023] [Indexed: 11/16/2023]
Abstract
As one of the common plasticizers, di-n-butyl phthalate (DBP) has been using in various daily consumer products worldwide. Since it is easily released from products and exists in the environment for a long time, it has a lasting impact on human health, especially male reproductive health. However, the detailed mechanism of testicular damage from DBP and the protection strategy are still not clear enough. In this study, we found that DBP could induce dose-dependent ferroptosis in testicular tissue. Mechanism dissection indicates that DBP can upregulate SP1 expression, which could directly transcriptionally upregulate PRDX6, a negative regulator of ferroptosis. Overexpression of PRDX6 or adding SP1 agonist curcumin could suppress the DBP-induced ferroptosis on testicular cells. In vivo, rats were given 500 mg/kg/day DBP orally for 3 weeks; elevated levels of ferroptosis were detected in testicular tissue. When the above-mentioned doses of DBP and curcumin at a dose of 300 mg/kg/day were administered intragastrically simultaneously, the testicular ferroptosis induced by DBP was alleviated. Immunohistochemistry and quantitative real-time PCR of testis tissue showed that the expression of PRDX6 was upregulated under the action of DBP and curcumin. These findings suggest a spontaneous self-protection mechanism of testicular tissue from DBP damage by upregulating SP1 and PRDX6. However, it is not strong enough to resist the DBP-induced ferroptosis. Curcumin can strengthen this self-protection mechanism and weaken the level of ferroptosis induced by DBP. This study may help us to develop a novel therapeutic option with curcumin to protect the testicular tissue from ferroptosis and function impairment by DBP.
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Affiliation(s)
- Hengtao Bu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, Jiangsu, China
| | - Bao Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, Jiangsu, China
| | - Yulin Wu
- Jiangsu Health Development Research Center, Nanjing, 210036, Jiangsu, China
- National Health and Family Planning Commission Contraceptives Adverse Reaction Surveillance Center, Nanjing, 210036, Jiangsu, China
| | - Pu Li
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, Jiangsu, China
| | - Yankang Cui
- Department of Urology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Xuping Jiang
- Department of Urology, Yixing People's Hospital, Yixing, 214200, China
| | - Xiaowen Yu
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, 210100, Jiangsu, China
| | - Bianjiang Liu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, Jiangsu, China
| | - Min Tang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210009, Jiangsu, China.
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Xiong M, Guo M, Huang D, Li J, Zhou Y. Effect of PRDX6 gene polymorphism on susceptibility to chronic obstructive pulmonary disease in the Chinese Han population. Clin Respir J 2023. [PMID: 37329238 PMCID: PMC10363838 DOI: 10.1111/crj.13648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 05/14/2023] [Accepted: 05/23/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND To explore the relationship of peroxiredoxin6 (PRDX6) tag-single nucleotide polymorphisms (SNPs) with susceptibility to chronic obstructive pulmonary disease (COPD) in the Chinese Han population. METHODS A total of 502 patients with COPD and 481 healthy controls from nine hospitals in China were enrolled in this study. The PRDX6 tag-SNPs were identified by linkage disequilibrium (LD) analysis in 30 healthy controls. The associations between identified tag-SNPs and COPD risk were further evaluated. RESULTS Four PRDX6 tag-SNPs, including rs7314, rs34619706, rs33951697, and rs4382766, were identified in 30 healthy controls. Moreover, in the allele model, there was no statistical difference in locus in PRDX6 between patients with COPD and healthy controls (P > 0.05). However, in the recessive model, rs33951697 locus in PRDX6 gene carrier with T/T had an increased risk of COPD (odds ratio [OR] = 2.59, 95% CI = 1.06-6.33, P = 0.028). Furthermore, in the relevance analysis between genetic polymorphisms and smoking behavior and lung function indexes, we found that the number of smoked cigarettes per day and FEV1/FVC differed among different genotypes of PRDX6, rs4382766, and rs7314 (P < 0.05). CONCLUSION PRDX6 gene polymorphism with smoking status may contribute to the etiology of COPD in the Chinese Han population.
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Affiliation(s)
- Mingmei Xiong
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Guangzhou, China
| | - Meihua Guo
- Department of Respiratory, Guangzhou Chest Hospital, Guangzhou, China
| | - Dongjian Huang
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Guangzhou, China
| | - Jing Li
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Guangzhou, China
| | - Yan Zhou
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Guangzhou, China
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Cheng C, Liu K, Shen F, Zhang J, Xie Y, Li S, Hou Y, Bai G. Astragaloside IV targets PRDX6, inhibits the activation of RAC subunit in NADPH oxidase 2 for oxidative damage. Phytomedicine 2023; 114:154795. [PMID: 37030053 DOI: 10.1016/j.phymed.2023.154795] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/14/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Radix Astragali Mongolici, as a traditional Chinese medicine, is widely used in the treatment of qi deficiency, viral or bacterial infection, inflammation and cancer. Astragaloside IV (AST), a key active compound in Radix Astragali Mongolici, has been shown to reduce disease progression by inhibiting oxidative stress and inflammation. However, the specific target and mechanism of action of AST in improving oxidative stress are still unclear. PURPOSE This study aims to explore the target and mechanism of AST to improve oxidative stress, and to explain the biological process of oxidative stress. METHODS AST functional probes were designed to capture target proteins and combined with protein spectrum to analyze target proteins. Small molecule and protein interaction technologies were used to verify the mode of action, while computer dynamics simulation technology was used to analyze the site of interaction with the target protein. The pharmacological activity of AST in improving oxidative stress was evaluated in a mouse model of acute lung injury induced by LPS. Additionally, pharmacological and serial molecular biological approaches were used to explore the underlying mechanism of action. RESULTS AST inhibits PLA2 activity in PRDX6 by targeting the PLA2 catalytic triad pocket. This binding alters the conformation and structural stability of PRDX6 and interferes with the interaction between PRDX6 and RAC, hindering the activation of the RAC-GDI heterodimer. Inactivation of RAC prevents NOX2 maturation, attenuates superoxide anion production, and improves oxidative stress damage. CONCLUSION The findings of this research indicate that AST impedes PLA2 activity by acting on the catalytic triad of PRDX6. This, in turn, disrupts the interaction between PRDX6 and RAC, thereby hindering the maturation of NOX2 and diminishing the oxidative stress damage.
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Affiliation(s)
- Chuanjing Cheng
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Kaixin Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Fukui Shen
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Jinling Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Yang Xie
- The Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450000, China
| | - Suyun Li
- The Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450000, China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases co-constructed by Henan province & Education Ministry of P.R., China, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Yuanyuan Hou
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China.
| | - Gang Bai
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China.
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Luo X, Liang M, Huang S, Xue Q, Ren X, Li Y, Wang J, Shi D, Li X. iTRAQ-based comparative proteomics reveal an enhancing role of PRDX6 in the freezability of Mediterranean buffalo sperm. BMC Genomics 2023; 24:245. [PMID: 37147584 PMCID: PMC10163707 DOI: 10.1186/s12864-023-09329-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/22/2023] [Indexed: 05/07/2023] Open
Abstract
BACKGROUND Semen cryopreservation is a critical tool for breed improvement and preservation of biodiversity. However, instability of sperm freezability affects its application. The Mediterranean buffalo is one of the river-type buffaloes with the capacity for high milk production. Until now, there is no specific cryopreservation system for Mediterranean buffalo, which influences the promotion of excellent cultivars. To improve the semen freezing extender used in cryopreservation of Mediterranean buffalo, different protein datasets relating to freezability sperm were analyzed by iTRAQ-based proteomics. This study will be beneficial for further understanding the sperm freezability mechanism and developing new cryopreservation strategy for buffalo semen. RESULTS 2652 quantified proteins were identified, including 248 significantly differentially expressed proteins (DEP). Gene Ontology (GO) analysis indicated that many these were mitochondrial proteins, enriched in the molecular function of phospholipase A2 activity and enzyme binding, and biological processes of regulation of protein kinase A signaling and motile cilium assembly. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis identified 17 significant pathways, including oxidative phosphorylation (OXPHOS). Furthermore, 7 DEPs were verified using parallel reaction monitoring or western blot, which confirmed the accuracy of the iTRAQ data. Peroxiredoxin 6 (PRDX6), which expressed 1.72-fold higher in good freezability ejaculate (GFE) compared to poor freezability ejaculate (PFE) sperms, was selected to explore the function in sperm freezability by adding recombinant PRDX6 protein into the semen freezing extender. The results showed that the motility, mitochondrial function and in vitro fertilization capacity of frozen-thawed sperm were significantly increased, while the oxidation level was significantly decreased when 0.1 mg/L PRDX6 was added compared with blank control. CONCLUSIONS Above results revealed the metabolic pattern of freezability of Mediterranean buffalo sperms was negatively associated with OXPHOS, and PRDX6 had protective effect on cryo-damage of frozen-thawed sperms.
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Affiliation(s)
- Xi Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Mingming Liang
- Liuzhou Maternity and Child Healthcare Hospital, Liuzhou, 545001, Guangxi, China
| | - Shihai Huang
- College of life science and technology, Guangxi University, Nanning, China
| | - Qingsong Xue
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Xuan Ren
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Yanfang Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Jinli Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Xiangping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China.
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10
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Falahati AM, Fallahi S, Allamehzadeh Z, Izadi Raieni M, Malekzadeh K. Effects of Date Palm Pollen Supplementations on The Expression of PRDX1 and PRDX6 Genes in Infertile Men: A Controlled Clinical Trial. Int J Fertil Steril 2023; 17:201-207. [PMID: 37183847 DOI: 10.22074/ijfs.2022.549291.1264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 05/16/2023]
Abstract
BACKGROUND Accumulating evidences suggest that date palm pollen (DPP) induces antioxidant activity and improves semen parameters in male rats. However, there is a few scientific evidences in support of the DPP effects on human male fertility. Hence, the effect of oral consumption of DPP on sperm parameters and expression pattern of Peroxiredoxin- 1 (PRDX1) and Peroxiredoxin-6 (PRDX6) genes was evaluated in men with infertility. MATERIALS AND METHODS The current controlled clinical trial included 40 men with infertility (DPP group) and 10 normospermic fertile men as controls. The DPP group received gelatinous capsules of DPP (400 mg/kg) for 74 days. Semen sampling was done before and after treatment in the both groups. Semen analysis and 8-isoprostane concentration assessments were performed by computer-assisted sperm analysis and ELISA methods, respectively. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) assays were employed to explore expression of PRDX1 and PRDX6 genes. RESULTS DPP consumption significantly improved semen volume (P=0.030), count (P<0.001) and morphology of sperm (P=0.023). Concentration of 8-isoprostane was significantly decreased after intervention in the DPP group (P<0.001). DPP consumption led to a significant elevation in the expression of PRDX1 and PRDX6 genes (P<0.001). Elevated gene expression of PRDX6 and PRDX1 was positively correlated with improved parameters of sperm including count, volume, motility and morphology. CONCLUSION Taken together, DPP seems to promote sperm quality through a decrease in reactive oxygen species (ROS) by increasing expression of antioxidant genes. Further large-scale studies are required to challenge this hypothesis (registration number: IRCT2015021221014N2).
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Affiliation(s)
- Ali Mohammad Falahati
- Department of Medical Genetics, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Soghra Fallahi
- Hormozgan Institute of Health, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Zeinab Allamehzadeh
- Medical Genetics and Prenatal Diagnostic Lab, Shahid Mohammadi Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Maliheh Izadi Raieni
- Medical Genetics and Prenatal Diagnostic Lab, Shahid Mohammadi Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Kianoosh Malekzadeh
- Department of Medical Genetics, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
- Hormozgan Institute of Health, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
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11
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Shen W, Yang L, Yang Y, Wang P, Tao X, Shen Y, Wang S, Shen Y. PRDX6 Promotes Fatty Acid Oxidation via PLA2-Dependent PPARα Activation in Rats Fed High-Fat Diet. Antioxid Redox Signal 2023; 38:1184-1200. [PMID: 36401357 DOI: 10.1089/ars.2022.0065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aims: Nonalcoholic fatty liver disease (NAFLD) is becoming the most common chronic liver disease globally, which is defined as an excess accumulation of fat caused by the imbalance of lipogenesis and lipid catabolism. Recently, increasing evidence suggests that peroxiredoxin 6 (PRDX6) is involved in the pathogenesis and progression of NAFLD. However, little is known regarding its role in liver lipid catabolism. Results: We found that PRDX6 level was significantly increased in liver tissues after high-fat diet (HFD) treatment. PRDX6 knockout (KO) exacerbated HFD-induced hepatic steatosis. PRDX6 KO did not affect messenger RNA (mRNA) and protein levels of peroxisome proliferator-activated receptor alpha (PPARα). However, PRDX6 KO decreased the mRNA and protein levels of carnitine palmitoyltransferase-1alpha (CPT-1α) and acyl-CoA oxidase 1 (ACOX1), the target genes of PPARα. PRDX6 KO also did not activate AMP-activated protein kinase (AMPK)α/proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α), the upstream signal of PPARα. However, PRDX6 KO reduces the levels of PPARα activators, the oxidized fatty acids (9- and 13-hydroxyoctadecadienoic acid) in HFD rats. More interestingly, PRDX6 promoted the production of oxidized fatty acids by hydrolyzing oxidized low-density lipoprotein (Ox-LDL), which depends on its phospholipase A2 (PLA2) activity. PRDX6 mutation on its PLA2 and its competitive phospholipase inhibitor inhibited the production of the oxidized fatty acids as well as the activation of PPARα. Furthermore, PRDX6 overexpression enhanced the transcriptional activation of PPARα. Innovation and Conclusion: This study elucidates for the first time the role of PLA2 enzyme activity of PRDX6 in fatty acid oxidation and reveals a novel mechanism of PRDX6 involved in liver steatosis.
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Affiliation(s)
- Wenwen Shen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, China
| | - Lin Yang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, China
| | - Yi Yang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, China
| | - Peng Wang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, China
| | - Xiaofang Tao
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, China
| | - Yujun Shen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, China
| | - Sheng Wang
- Anhui Medical University, Center for Scientific Research of Anhui Medical University, Hefei, China
| | - Yuxian Shen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, China
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12
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Di Sanzo M, Cozzolino F, Battaglia AM, Aversa I, Monaco V, Sacco A, Biamonte F, Palmieri C, Procopio F, Santamaria G, Ortuso F, Pucci P, Monti M, Faniello MC. Ferritin Heavy Chain Binds Peroxiredoxin 6 and Inhibits Cell Proliferation and Migration. Int J Mol Sci 2022; 23:12987. [PMID: 36361777 PMCID: PMC9654362 DOI: 10.3390/ijms232112987] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/18/2022] [Accepted: 10/23/2022] [Indexed: 08/04/2023] Open
Abstract
The H Ferritin subunit (FTH1), as well as regulating the homeostasis of intracellular iron, is involved in complex pathways that might promote or inhibit carcinogenesis. This function may be mediated by its ability to interact with different molecules. To gain insight into the FTH1 interacting molecules, we analyzed its interactome in HEK293T cells. Fifty-one proteins have been identified, and among them, we focused our attention on a member of the peroxiredoxin family (PRDX6), an antioxidant enzyme that plays an important role in cell proliferation and in malignancy development. The FTH1/PRDX6 interaction was further supported by co-immunoprecipitation, in HEK293T and H460 cell lines and by means of computational methods. Next, we demonstrated that FTH1 could inhibit PRDX6-mediated proliferation and migration. Then, the results so far obtained suggested that the interaction between FTH1/PRDX6 in cancer cells might alter cell proliferation and migration, leading to a less invasive phenotype.
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Affiliation(s)
- Maddalena Di Sanzo
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Flora Cozzolino
- Department of Chemical Sciences, Università degli Studi di Napoli “Federico II”, Via Cinthia 21, 80126 Napoli, Italy
- CEINGE Biotecnologie Avanzate, Via G. Salvatore 486, 80145 Napoli, Italy
| | - Anna Martina Battaglia
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Ilenia Aversa
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Vittoria Monaco
- Department of Chemical Sciences, Università degli Studi di Napoli “Federico II”, Via Cinthia 21, 80126 Napoli, Italy
- CEINGE Biotecnologie Avanzate, Via G. Salvatore 486, 80145 Napoli, Italy
| | - Alessandro Sacco
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Flavia Biamonte
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
- Interdepartmental Centre of Services, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Camillo Palmieri
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Francesca Procopio
- Department of Health Science, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Gianluca Santamaria
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Francesco Ortuso
- Department of Health Science, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
| | - Piero Pucci
- CEINGE Biotecnologie Avanzate, Via G. Salvatore 486, 80145 Napoli, Italy
| | - Maria Monti
- Department of Chemical Sciences, Università degli Studi di Napoli “Federico II”, Via Cinthia 21, 80126 Napoli, Italy
- CEINGE Biotecnologie Avanzate, Via G. Salvatore 486, 80145 Napoli, Italy
| | - Maria Concetta Faniello
- Research Center of Biochemistry and Advanced Molecular Biology, Department of Experimental and Clinical Medicine, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy
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13
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Li H, Wu Z, Zhong R, Zhang Q, Chen Q, Shen Y. PRDX6 knockout restrains the malignant progression of intrahepatic cholangiocarcinoma. Med Oncol 2022; 39:250. [PMID: 36209344 DOI: 10.1007/s12032-022-01822-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/15/2022] [Indexed: 11/15/2022]
Abstract
Intrahepatic cholangiocarcinoma (ICC) has a poor prognosis. The bifunctional protein peroxiredoxin 6 (PRDX6), which has both calcium-independent phospholipase A2 (iPLA2) and glutathione peroxidase (GPx) activity, participates in the development of multiple tumors. However, the function and clinical significance of PRDX6 in ICC remain unclear. In this study, we characterized PRDX6 in both human ICC and thioacetamide (TAA)-induced rat ICC. We found PRDX6 was significantly increased in ICC tissues, compared with the peritumoral tissues, and PRDX6 expression level was positively correlated with the malignant phenotype in ICC patients. Furthermore, PRDX6 genetic knockout significantly inhibited the tumor progression in rats. By using RNA sequencing analysis, we found 127 upregulated genes and 321 downregulated genes after PRDX6 knockout. In addition, we noticed a significant repression in the Wnt7a/b cascade, which has been shown to play an important role in the occurrence of ICC. We confirmed that gene expressions in the Wnt7a/b cascade were inhibited in ICC tissues after PRDX6 knockout by using qRT-PCR and immunohistochemistry analysis. Collectively, our findings suggest that PRDX6 may promote ICC by regulating the Wnt7a/b pathway, which could be a novel therapeutic target for ICC.
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14
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Yang WY, Meng X, Wang YR, Wang QQ, He X, Sun XY, Cheng N, Zhang L. PRDX6 alleviates lipopolysaccharide-induced inflammation and ferroptosis in periodontitis. Acta Odontol Scand 2022; 80:535-546. [PMID: 35723029 DOI: 10.1080/00016357.2022.2047780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
OBJECTIVE Periodontitis is a progressive and inflammatory oral disease and results in the damage of the supporting tissues of teeth. Peroxiredoxin 6 (PRDX6) is an antioxidant enzyme identified as a regulator in ferroptosis. This study aimed to investigate whether PRDX6 could protect human gingival fibroblasts (HGFs) from lipopolysaccharide (LPS)-induced inflammation and its mechanisms. MATERIAL AND METHODS Both inflamed and non-inflamed human gingival tissues were collected to assess the expression of PRDX6 and nuclear factor erythropoietin 2-related factor 2 (NRF2) by Immunohistochemistry and Western blotting. Furthermore, the molecular mechanisms of PRDX6 have been clarified in PRDX6 silenced cells. The inflammatory cytokines in HGFs were measured by RT-qPCR and ELISA. The lipid hydroperoxide (LOOH) was detected by C11-BODIPY. RESULTS The expression of PRDX6 and NRF2 were decreased in gingival tissues of severe periodontitis patients. The increased LPS-induced LOOH and inflammatory cytokines were found in PRDX6 knockdown HGFs. Besides, the inhibition of ferroptosis or PRDX6 phospholipase A2 activity (PLA2) alleviated LPS-induced inflammatory cytokines and LOOH. However, inhibiting NRF2 signalling upregulated those in HGFs. CONCLUSIONS Therefore, this study provided a new mechanistic insight that PRDX6, regulated by the NRF2 signalling, alleviates LPS-induced inflammation and ferroptosis in human gingival fibroblasts.
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Affiliation(s)
- Wen-Ying Yang
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China
| | - Xiang Meng
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China
| | - Yue-Rong Wang
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China
| | - Qing-Qing Wang
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.,Periodontal Department, Anhui Stomatology Hospital affiliated to Anhui Medical University, Hefei, China
| | - Xin He
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.,Periodontal Department, Anhui Stomatology Hospital affiliated to Anhui Medical University, Hefei, China
| | - Xiao-Yu Sun
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.,Periodontal Department, Anhui Stomatology Hospital affiliated to Anhui Medical University, Hefei, China
| | - Nan Cheng
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.,Periodontal Department, Anhui Stomatology Hospital affiliated to Anhui Medical University, Hefei, China
| | - Lei Zhang
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.,Periodontal Department, Anhui Stomatology Hospital affiliated to Anhui Medical University, Hefei, China
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15
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Wagner MP, Formaglio P, Gorgette O, Dziekan JM, Huon C, Berneburg I, Rahlfs S, Barale JC, Feinstein SI, Fisher AB, Ménard D, Bozdech Z, Amino R, Touqui L, Chitnis CE. Human peroxiredoxin 6 is essential for malaria parasites and provides a host-based drug target. Cell Rep 2022; 39:110923. [PMID: 35705035 DOI: 10.1016/j.celrep.2022.110923] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/30/2022] [Accepted: 05/17/2022] [Indexed: 11/30/2022] Open
Abstract
The uptake and digestion of host hemoglobin by malaria parasites during blood-stage growth leads to significant oxidative damage of membrane lipids. Repair of lipid peroxidation damage is crucial for parasite survival. Here, we demonstrate that Plasmodium falciparum imports a host antioxidant enzyme, peroxiredoxin 6 (PRDX6), during hemoglobin uptake from the red blood cell cytosol. PRDX6 is a lipid-peroxidation repair enzyme with phospholipase A2 (PLA2) activity. Inhibition of PRDX6 with a PLA2 inhibitor, Darapladib, increases lipid-peroxidation damage in the parasite and disrupts transport of hemoglobin-containing vesicles to the food vacuole, causing parasite death. Furthermore, inhibition of PRDX6 synergistically reduces the survival of artemisinin-resistant parasites following co-treatment of parasite cultures with artemisinin and Darapladib. Thus, PRDX6 is a host-derived drug target for development of antimalarial drugs that could help overcome artemisinin resistance.
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Affiliation(s)
- Matthias Paulus Wagner
- Institut Pasteur, Université de Paris, Malaria Parasite Biology and Vaccines Unit, Paris, France
| | - Pauline Formaglio
- Institut Pasteur, Université de Paris, Malaria Infection and Immunity Unit, Paris, France
| | - Olivier Gorgette
- Institut Pasteur, Department of Cell Biology and Infection, Centre for Innovation and Technological Research, Ultrastructural Bioimaging Unit, Paris, France
| | - Jerzy Michal Dziekan
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Christèle Huon
- Institut Pasteur, Université de Paris, Malaria Parasite Biology and Vaccines Unit, Paris, France
| | - Isabell Berneburg
- Biochemistry and Molecular Biology, Interdisciplinary Research Centre, Justus Liebig University Giessen, Giessen, Germany
| | - Stefan Rahlfs
- Biochemistry and Molecular Biology, Interdisciplinary Research Centre, Justus Liebig University Giessen, Giessen, Germany
| | - Jean-Christophe Barale
- Institut Pasteur, Université de Paris, CNRS UMR 3528, Structural Microbiology Unit, Paris, France; Institut Pasteur, Pasteur International Unit, Pasteur International Network, Malaria Translational Research Unit, Phnom Penh, Cambodia and Paris, France
| | | | - Aron B Fisher
- Peroxitech, Inc., Philadelphia, PA, USA; Institute for Environmental Medicine, Department of Physiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Didier Ménard
- Institut Pasteur, Université de Paris, INSERM U1201, Malaria Genetics and Resistance Unit, Paris, France; Dynamics of Host-Pathogen Interactions, EA 7292, IPPTS, Strasbourg University, Strasbourg, France
| | - Zbynek Bozdech
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Rogerio Amino
- Institut Pasteur, Université de Paris, Malaria Infection and Immunity Unit, Paris, France
| | - Lhousseine Touqui
- Cystic Fibrosis, Physiopathology and Phenogenomics, INSERM Unit 938, Saint-Antoine, Paris, France; Institut Pasteur, Université de Paris, Laboratory of Cystic Fibrosis and Chronic Bronchopathies, Paris, France
| | - Chetan E Chitnis
- Institut Pasteur, Université de Paris, Malaria Parasite Biology and Vaccines Unit, Paris, France.
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16
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Wang D, Li Y, Liu Y, Cheng S, Liu F, Zuo R, Ding C, Shi S, Liu G. NPM1 promotes cell proliferation by targeting PRDX6 in colorectal cancer. Int J Biochem Cell Biol 2022; 147:106233. [PMID: 35659568 DOI: 10.1016/j.biocel.2022.106233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/29/2022] [Accepted: 05/29/2022] [Indexed: 10/18/2022]
Abstract
Colorectal cancer is a malignant tumor that begins in the colorectal mucosal epithelium. NPM1 is a nucleolar phosphoprotein that has been linked to tumor progression in humans. NPM1 is significantly overexpressed in a variety of tumors, including colorectal cancer, but its role and mechanism in colorectal cancer remain unknown. Therefore, the purpose of this study was to discover the role of NPM1 in promoting colorectal cancer proliferation via PRDX6 and its molecular mechanism. NPM1 knockdown or overexpression inhibited or promoted the proliferation and cell cycle progression of HCT-116 and HT-29 colorectal cancer cells, respectively, according to our findings. Furthermore, NPM1 knockdown or overexpression increased or decreased intracellular ROS levels. Animal experiments revealed that NPM1 knockdown or overexpression inhibited or promoted the growth of colorectal cancer cells transplanted subcutaneously. NPM1 knockdown or overexpression reduced or increased PRDX6 expression and related enzyme activities, respectively, according to our findings. NPM1 formed a complex with CBX3 as evidenced by immunoprecipitation, and the double luciferase reporter gene assay confirmed that the CBX3-NPM1 complex promoted PRDX6 transcription. Our data support the role of NPM1 in promoting the proliferation of colorectal cancer, which may be accomplished by CBX3 promoting the expression of the antioxidant protein PRDX6 and thus inhibiting intracellular ROS levels. NPM1 and PRDX6 are potential colorectal cancer therapeutic targets.
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Affiliation(s)
- Dan Wang
- Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Yin Li
- Department of Medical Examination, Xiamen International Travel Healthcare Center, Xiamen 361000, Fujian, China
| | - Yanling Liu
- School of Pharmaceutical Sciences Xiamen University, Xiamen, Fujian 361102, China
| | - Shuyu Cheng
- Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Fan Liu
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361002, China
| | - Renjie Zuo
- Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Chenchun Ding
- Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Songlin Shi
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361002, China.
| | - Guoyan Liu
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian 361002, China; Institute of Gastrointestinal Oncology, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China; School of Pharmaceutical Sciences Xiamen University, Xiamen, Fujian 361102, China.
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17
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Li Z, Xiao J, Liu M, Cui J, Lian B, Sun Y, Li C. Notch3 regulates ferroptosis via ROS-induced lipid peroxidation in NSCLC cells. FEBS Open Bio 2022; 12:1197-1205. [PMID: 35258176 PMCID: PMC9157401 DOI: 10.1002/2211-5463.13393] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/30/2022] [Accepted: 03/07/2022] [Indexed: 11/10/2022] Open
Abstract
Ferroptosis is type of programmed cell death (PCD), which is known to be involved in certain cancers. Notch3 signaling is reported to be involved in the tumorigenesis of non-small cell lung cancer (NSCLC) and regulates iron metabolism, lipid synthesis and oxidative stress in some tissues. However, whether Notch3 signaling regulates ferroptosis is unclear. In this study, we found that ferroptosis inhibitors, ferrostatin-1 and liproxstatin-1, protected against cell death induced by Notch3 knockdown and that Notch3 knockdown initiated ferroptosis in NSCLC cells by increasing reactive oxygen species (ROS) levels, lipid peroxidation, and Fe2+ levels, accompanied by downregulation of glutathione4 (GPX4) and peroxiredoxin6 (PRDX6). Conversely, Notch3 intracellular domain (NICD3) overexpression suppressed erastin-induced ferroptosis, which was synergistically enhanced by MJ33 in H1299 cells via a decrease in ROS levels and lipid peroxidation, accompanied by upregulation of GPX4 and PRDX6. Moreover, Notch3 knockdown decreased tumorigenesis in vivo with downregulation of GPX4 and PRDX6. In summary, here we have identified Notch3 as a potential negative regulator of ferroptosis in NSCLC.
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Affiliation(s)
- Zhikang Li
- Department of Pharmaceutical science, China Medical University, The Queen's University of Belfast Joint College, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, P.R. China, 110122
| | - JinYang Xiao
- School of life sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, P.R. China, 110122
| | - Mengyu Liu
- School of life sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, P.R. China, 110122
| | - Jiaqi Cui
- School of life sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, P.R. China, 110122
| | - Bowen Lian
- School of life sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, P.R. China, 110122
| | - Yuanlu Sun
- Department of Pharmaceutical science, China Medical University, The Queen's University of Belfast Joint College, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, P.R. China, 110122
| | - Chunyan Li
- Science Experiment Center, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, P.R. China, 110122
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Hu L, Zhou M, Xue L, Zhang J. Circular RNA hsa_circ_0011385 contributes to cervical cancer progression through sequestering miR-149-5p and increasing PRDX6 expression. Reprod Biol 2022; 22:100619. [PMID: 35240453 DOI: 10.1016/j.repbio.2022.100619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/22/2022] [Accepted: 02/12/2022] [Indexed: 12/24/2022]
Abstract
Cervical cancer (CC) is a common tumor in the female reproductive tract. Circular RNA hsa_circ_0011385 has been reported to be up-regulated in CC tissues. Nevertheless, the role and regulatory mechanism of hsa_circ_0011385 in CC are still being further verified. The levels of hsa_circ_0011385, microRNA (miR)- 149-5p, and peroxiredoxin 6 (PRDX6) mRNA in CC samples and cell lines were detected by quantitative real-time polymerase chain reaction (qRT-PCR). Loss-of-function experiments were performed to survey the impacts of hsa_circ_0011385 inhibition on CC cell proliferation, colony formation, cycle progression, apoptosis, metastasis, invasion, and angiogenesis. Protein levels were detected by western blotting. The relationship between hsa_circ_0011385 or PRDX6 and miR-149-5p was verified by dual-luciferase reporter, RNA immunoprecipitation (RIP), and/or RNA pull-down assays. The tumorigenesis role of hsa_circ_0011385 in CC was confirmed by xenograft assay. We observed that hsa_circ_0011385 and PRDX6 were up-regulated while miR-149-5p was down-regulated in CC samples and cell lines. CC patients with high hsa_circ_0011385 expression possessed a shorter overall survival. Hsa_circ_0011385 knockdown reduced tumor growth in vivo and facilitated apoptosis, cell cycle arrest, impeded proliferation, metastasis, invasion, and angiogenesis of CC cells in vitro. Hsa_circ_0011385 could mediate PRDX6 expression through binding to miR-149-5p. MiR-149-5p silencing reversed hsa_circ_0011385 knockdown-mediated effects on CC cell angiogenesis and malignancy. PRDX6 overexpression overturned the inhibitory effects of miR-149-5p overexpression on angiogenesis and malignant behaviors of CC cells. In conclusion, hsa_circ_0011385 accelerated angiogenesis and malignant behaviors of CC cells by regulating the miR-149-5p/PRDX6 axis, manifesting that hsa_circ_0011385 might be a therapeutic target for CC.
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Affiliation(s)
- Lijuan Hu
- Department of Gynecologic Oncology, Shaanxi Provincial Cancer Hospital, Xi'an 710061, China
| | - Min Zhou
- Department of Gynecologic Oncology, Shaanxi Provincial Cancer Hospital, Xi'an 710061, China
| | - Lei Xue
- Department of Gastrointestinal Oncology, Shaanxi Provincial Cancer Hospital, Xi'an 710061, China
| | - Jing Zhang
- Department of Gynecologic Oncology, Shaanxi Provincial Cancer Hospital, Xi'an 710061, China.
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Zhang JK, Zhang Z, Guo ZA, Fu Y, Chen XJ, Chen WJ, Wu HF, Cui XJ. The BMSC-derived exosomal lncRNA Mir9-3hg suppresses cardiomyocyte ferroptosis in ischemia-reperfusion mice via the Pum2/ PRDX6 axis. Nutr Metab Cardiovasc Dis 2022; 32:515-527. [PMID: 34953631 DOI: 10.1016/j.numecd.2021.10.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/20/2021] [Accepted: 10/23/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND AND AIMS The exosomal long noncoding RNAs (lncRNAs) have been reported to have cardioprotective effects on ischemia-reperfusion (I/R) injury by hindering ferroptosis, but the role of lncRNA Mir9-3 host gene (Mir9-3hg) in cardiac I/R injury remains unclear. METHODS AND RESULTS Exosomes were extracted from mouse bone marrow mesenchymal stem cells (BMSCs) and identified by detecting the exosome specific marker levels, and the results showed that Mir9-3hg was highly expressed in BMSCs-Exo. Hypoxia/reoxygenation (H/R)-treated HL-1 mouse cardiomyocytes were incubated with exosomes extracted from BMSCs transfected with Mir9-3hg siRNA. BMSCs-Exo incubation observably facilitated cell proliferation, increased glutathione (GSH) content, and reduced iron ion concentration, reactive oxygen species (ROS) level and ferroptosis marker protein levels in H/R-treated cells, while interfering Mir9-3hg reversed these effects. RNA binding protein immunoprecipitation assay was found that Mir9-3hg bound with pumilio RNA binding family member 2 (Pum2) protein and downregulated Pum2 expression. Silence of Pum2 reversed the effects of Mir9-3hg inhibition on cell functions. Chromatin immunoprecipitation assay was revealed that Pum2 bound with peroxiredoxin 6 (PRDX6) promoter and restrained PRDX6 expression. Silence of PRDX6 reversed the improved effects of Pum2 downregulation on cell functions. Additionally, BMSCs-Exo treatment ameliorated cardiac function in I/R-treated mice by inhibiting cardiomyocyte ferroptosis. CONCLUSIONS BMSCs-Exo treatment attenuates I/R-induced cardiac injury by inhibiting cardiomyocyte ferroptosis through modulating the Pum2/PRDX6 axis, thereby ameliorating cardiac function.
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Affiliation(s)
- Jian-Kai Zhang
- Key Laboratory Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, Guangdong Province, 523808, China
| | - Zhi Zhang
- Department of Vascular, Thyroid and Mammary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524023, China
| | - Zi-Ao Guo
- Key Laboratory Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, Guangdong Province, 523808, China
| | - Yuan Fu
- Key Laboratory Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, Guangdong Province, 523808, China
| | - Xiao-Jia Chen
- Key Laboratory Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, Guangdong Province, 523808, China
| | - Wei-Jie Chen
- Department of Vascular, Thyroid and Mammary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524023, China
| | - Hong-Fu Wu
- Key Laboratory Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, Guangdong Province, 523808, China
| | - Xiao-Jun Cui
- Key Laboratory Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, Guangdong Province, 523808, China.
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20
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Abstract
Diabetic neuropathy is regarded as one of the most debilitating outcomes of diabetes. It can affect both the peripheral and central nervous systems, leading to pain, decreased motility, cognitive decline, and dementia. S-palmitoylation is a reversible posttranslational lipid modification, and its dysregulation has been implicated in metabolic syndrome, cancers, neurological disorders, and infections. However, the role of S-palmitoylation in diabetic neuropathy remains unclear. Here we demonstrate a potential association between activating protein palmitoylation and diabetic neuropathy. We compared the proteomic data of lumbar dorsal root ganglia (DRG) of diabetes mice and palmitoylome profiling data of the HUVEC cell line. The mapping results identified peroxiredoxin-6 (PRDX6) as a novel target in diabetic neuropathy, whose biological mechanism was associated with S-palmitoylation. Bioinformatic prediction revealed that PRDX6 had two palmitoylation sites, Cys47 and Cys91. Immunofluorescence results indicated PRDX6 translocating between the cytoplasm and cell membrane. Protein function analysis proposed that increased palmitoylation could competitively inhibit the formation of disulfide-bond between Cys47 and Cys91 and change the spatial topology of PRDX6 protein. Cl-HCO3- anion exchanger 3 (AE3) was one of the AE family members, which was proved to express in DRG. AE3 activity evoked Cl- influx in neurons which was generally associated with increased excitability and susceptibility to pain. We demonstrated that the S-palmitoylation status of Cys47 could affect the interaction between PRDX6 and the C-terminal domain of AE3, thereby regulating the activity of AE3 anion exchanger enzyme in the nervous system. The results highlight a central role for PRDX6 palmitoylation in protection against diabetic neuropathy.
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Affiliation(s)
- Yan Cao
- Department of Anesthesiology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Wantao Wang
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xiaorong Zhan
- Department of Endocrinology, Southern University of Science and Technology Hospital, Shenzhen, China
| | - Yitong Zhang
- School of Life Science, Beijing Institute of Technology, Beijing, China
- *Correspondence: Yitong Zhang,
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21
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Gao L, Meng J, Yue C, Wu X, Su Q, Wu H, Zhang Z, Yu Q, Gao S, Fan S, Zuo L. Integrative analysis the characterization of peroxiredoxins in pan-cancer. Cancer Cell Int 2021; 21:366. [PMID: 34246267 PMCID: PMC8272277 DOI: 10.1186/s12935-021-02064-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 06/29/2021] [Indexed: 12/18/2022] Open
Abstract
Background Peroxiredoxins (PRDXs) are an antioxidant enzymes protein family involved in several biological functions such as differentiation, cell growth. In addition, previous studies report that PRDXs play critical roles in the occurrence and development of carcinomas. However, few studies have conducted systematic analysis of PRDXs in cancers. Therefore, the present study sought to explore the molecular characteristics and potential clinical significance of PRDX family members in pan cancer and further validate the function of PRDX6 in bladder urothelial carcinoma (BLCA). Methods A comprehensive analysis of PRDXs in 33 types of cancer was performed based on the TCGA database. This involved an analysis of mRNA expression profiles, genetic alterations, methylation, prognostic values, potential biological pathways and target drugs. Moreover, both the gain and loss of function strategies were used to assess the importance and mechanism of PRDX6 in the cell cycle of BLCA. Result Analysis showed abnormal expression of PRDX1-6 in several types of cancer compared to normal tissues. Univariate Cox proportional hazard regression analysis showed that expression levels of PRDX1, PRDX4 and PRDX6 were mostly associated with poor survival of OS, DSS and PFI, and PRDX2 and PRDX3 with favorable survival. In addition, the expression of PRDX genes were positively correlated with CNV and negatively with methylation. Moreover, analysis based on PharmacoDB dataset showed that the augmented levels of PRDX1, PRDX3 and PRDX6 were significantly correlated with EGFR/VEGFR inhibitor drugs. Furthermore, knocking down of PRDX6 inhibited growth of cancer cells through the JAK2-STAT3 in bladder cell lines. Conclusions PRDXs are potential biomarkers and therapeutic targets for several carcinomas, especially for BLCA. In addition, PRDX6 could regulate proliferation of cancer cell via JAK2-STAT3 pathway and involve into the process of cell cycle in BLCA. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02064-x.
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Affiliation(s)
- Lei Gao
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jialin Meng
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology, Anhui Medical University, Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, China
| | - Chuang Yue
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Xingyu Wu
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Quanxin Su
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Hao Wu
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Ze Zhang
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Qinzhou Yu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology, Anhui Medical University, Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, China
| | - Shenglin Gao
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China.
| | - Song Fan
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology, Anhui Medical University, Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, China.
| | - Li Zuo
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China.
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22
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Li BZ, Bai HH, Tan FW, Gao YB, He J. Identification of peroxiredoxin 6 as a potential lung-adenocarcinoma biomarker for predicting chemotherapy response by proteomic analysis. J BIOL REG HOMEOS AG 2021; 35:537-546. [PMID: 33631924 DOI: 10.23812/20-683-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The prognosis of lung cancer remains poor due to the limited biomarker selection for treating patients with optimal chemotherapy. The aim of this study is to discover and identify new biomarkers with the value of predicting chemotherapy responses in a lung adenocarcinoma (AD) specimen. In this study, six pairs of pre-treatment fresh primary lung AD-cancer tumors with varied chemotherapy responses were used to discover new biomarkers by two-dimensional difference gel electrophoresis (2D DIGE). Among the matched protein spots, 19 were up-regulated and 18 were down-regulated in chemo-sensitive tumors versus chemo-resistant tissues. These differentially expressed proteins could be divided into five classes: redox regulation protein, the cytoskeletal protein, cell metabolism enzymes or proteins, apoptosis, signal transduction mediated molecules, and other functional proteins. Proteins of interest, including PRDX2, PRDX6, and Gelsolin, were differentially expressed in chemo-sensitive tumors versus chemo-resistant tissues and these observations were validated by immunohistochemistry in 92 formalin-fixed and paraffin-embedded (FFPE) specimens. Our results demonstrated that PRDX6 protein expression was closely related to tumor response (cc2 = 5.57, P < 0.05), whereas no relationship of PRDX2 and Gelsolin were obtained with tumor response (cc2 = 0.51 P > 0.05, cc2 = 0.41 P > 0.05). This tissue proteomics study provides evidence that PRDX6 may be regarded as a predictive biomarker for poor chemotherapy response, which can be helpful in guiding pretreatment protocols.
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Affiliation(s)
- B Z Li
- Department of Thoracic Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, P.R. China
| | - H H Bai
- Phase I Clinical Trial Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, P.R. China
| | - F W Tan
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y B Gao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J He
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Sanjay S, Girish C, Toi PC, Bobby Z. Quercetin modulates NRF2 and NF-κB/TLR-4 pathways to protect against isoniazid- and rifampicin-induced hepatotoxicity in vivo. Can J Physiol Pharmacol 2021; 99:952-963. [PMID: 33617360 DOI: 10.1139/cjpp-2021-0008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Isoniazid and rifampicin are crucial for treating tuberculosis (TB); however, they can cause severe hepatotoxicity leading to liver failure. Therapeutic options are limited and ineffective. We hypothesized that prophylaxis with quercetin attenuates isoniazid- and rifampicin-induced liver injury. We randomly divided Wistar rats into seven groups (n = 6). The animals received isoniazid and rifampicin or were co-treated with quercetin or silymarin for 28 days. The protective effect of quercetin was assessed using liver function tests and liver histology. Nuclear factor erythroid 2-related factor 2 (NRF2) and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathways were explored to elucidate the mechanism of action. Quercetin co-administration prevented the elevation of alanine transaminase (ALT), aspartate transaminase (AST), alkaline phosphatase (ALP) and bilirubin compared with isoniazid and rifampicin treatment alone. In the histological analysis, we observed that quercetin prophylaxis lessened the severity of hepatic necrosis and inflammation compared with the anti-TB drug-treated group. Quercetin attenuated anti-TB drug-induced oxidative stress by increasing NRF2 activation and expression, boosting endogenous antioxidant levels. Additionally, quercetin blocked inflammatory mediators high mobility group box-1 (HMGB-1) and interferon γ (IFN-γ), inhibiting activation of the NF-κB/ toll like receptor 4 (TLR-4) axis. Quercetin protects against anti-TB liver injury by activating NRF2 and blocking NF-κB/TLR-4.
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Affiliation(s)
| | | | - Pampa Ch Toi
- Department of Pathology, JIPMER, Puducherry, India
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24
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Li H, Zhang D, Li B, Zhen H, Chen W, Men Q. PRDX6 Overexpression Promotes Proliferation, Invasion, and Migration of A549 Cells in vitro and in vivo. Cancer Manag Res 2021; 13:1245-1255. [PMID: 33603470 PMCID: PMC7883393 DOI: 10.2147/cmar.s284195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/31/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose Peroxiredoxin-6 (PRDX6) is frequently found in various cancers. However, its expression and relevance to proliferation, invasion, and migration in human non-small-cell lung cancer (NSCLC) remain unclear. This study investigated the role and novel mechanism of PRDX6 in progression in an NSCLC cell line (A549). Methods We analyzed the expression of PRDX6 in NSCLC and adjacent normal tissues and explored the proliferation, migration, and invasion of A549 cells using either a PRDX6 plasmid or PRDX6 small interfering RNA (siRNA). We also assessed the effects of PRDX6 on the epithelial–mesenchymal transition (EMT) and β-catenin-mediated transcription of target genes. Results PRDX6 expression was markedly higher in NSCLC tissues than in adjacent tissues. Proliferation, invasion, and migration of A549 cells were promoted by overexpression of PRDX6 but inhibited by its silencing. PRDX6 overexpression inhibited the protein expression of both phosphorylated β-catenin and E-cadherin, as well as the expression of vimentin, TWIST, and downstream targets of β-catenin including c-MYC, TCF-4, and MMP14. Conversely, PRDX6 silencing markedly decreased the expression of c-MYC, TCF-4, and MMP14, and inhibited EMT in A549 cells. Overexpression of PRDX6 in vivo notably increased the volume and weight of tumors. Conclusion PRDX6 overexpression promotes the proliferation, invasion, and migration of A549 cells in vitro and in vivo.
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Affiliation(s)
- Hao Li
- Department of Blood Transfusion, Shandong Provincial Hospital Affiliated with Shandong First Medical University, Shandong, 271016, People's Republic of China
| | - Donghua Zhang
- Department of Oncology, Zhangqiu People's Hospital Shandong Province, Shandong, 250200, People's Republic of China
| | - Bo Li
- Department of Orthopaedics, Central Hospital of XinWen Mining Group Co., Ltd., Shandong, 271233, People's Republic of China
| | - Honghua Zhen
- Department of Cardiothoracic Surgery, Zhangqiu District People's Hospital, Jinan City, Shandong Province, 250200, People's Republic of China
| | - Wenping Chen
- Department of Cardiothoracic Surgery, Zhangqiu District People's Hospital, Jinan City, Shandong Province, 250200, People's Republic of China
| | - Qingjuan Men
- Clinical Laboratory, People's Hospital of Juxian, Shandong, 276500, People's Republic of China
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Li H, Weng Y, Lai L, Lei H, Xu S, Zhang Y, Li L. KLF9 regulates PRDX6 expression in hyperglycemia-aggravated bupivacaine neurotoxicity. Mol Cell Biochem 2021; 476:2125-2134. [PMID: 33547545 DOI: 10.1007/s11010-021-04059-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 01/11/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Neurotoxicity induced by local anesthetics (LAs) is potentially life threatening, especially for patients with underlying diseases like diabetes. The anesthetic bupivacaine (Bup) has been reported to induce neurotoxicity mediated by reactive oxygen species (ROS), which is aggravated by hyperglycemia. Krüppel-like factor 9 (KLF9), an axon growth-suppressing transcription factor, plays a key role in neuronal maturation and promotes oxidative stress. This study was designed to investigate whether and how KLF9 regulates ROS levels related to LA neurotoxicity under hyperglycemic conditions. METHODS Klf9/GFP ShRNA (LV Sh-Klf9) was used to achieve stable Klf9 knockdown in the SH-SY5Y cell line. KLF9-deficient and normal cells were cultured under normal or high-glucose (HG) culture conditions and then exposed to Bup. Cell viability, intracellular and mitochondrial ROS, and mitochondrial membrane potential (ΔΨm) were detected to examine the role of KLF9. Thereafter, KLF9-deficient and normal cells were pretreated with small-interfering RNA targeting peroxiredoxin 6 (siRNA-Prdx6) to determine if PRDX6 was the target protein in HG-aggravated Bup neurotoxicity. RESULTS The mRNA and protein levels of KLF9 were increased after Bup and hyperglycemia treatment. In addition, cell survival and mitochondrial function were significantly improved, and ROS production was decreased after Sh-Klf9 treatment compared with Sh-Ctrl. Furthermore, the expression of PRDX6 was suppressed by Bup in hyperglycemic cultures and was upregulated in the Sh-Klf9 group. Moreover, the protection provided by KLF9 deficiency for cell survival, the increase in ROS production in cells and mitochondria, and the disruption of mitochondrial function were abolished by Prdx6 knockdown. CONCLUSIONS The results of this study demonstrated that hyperglycemia aggravated Bup neurotoxicity by upregulating KLF9 expression, which repressed the antioxidant PRDX6 and led to mitochondrial dysfunction, ROS burst, and cell death. Understanding this mechanism may, thus, offer valuable insights for the prevention and treatment of neurotoxicity induced by LAs, especially in diabetic patients.
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Affiliation(s)
- Hui Li
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, Guangdong, China
| | - Yaqian Weng
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, Guangdong, China
| | - Luying Lai
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, Guangdong, China
| | - Hongyi Lei
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, Guangdong, China
| | - Shiyuan Xu
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, Guangdong, China
| | - Yang Zhang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Southern Medical University, Nanfang hospital, Guangzhou, 510282, Guangdong, China.
| | - Le Li
- Department of Anesthesiology, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, Guangdong, China.
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Hu X, Lu E, Pan C, Xu Y, Zhu X. Overexpression and biological function of PRDX6 in human cervical cancer. J Cancer 2020; 11:2390-2400. [PMID: 32201510 PMCID: PMC7066013 DOI: 10.7150/jca.39892] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 01/23/2020] [Indexed: 12/21/2022] Open
Abstract
Background: Our previous study demonstrated that the peroxiredoxin 6 (PRDX6) protein was downregulated in squamous cervical cancer samples after neoadjuvant chemotherapy compared with the expression level before chemotherapy. However, the effect of PRDX6 on the biological behavior of cervical cancer is still uncertain. Thus, the purpose of this study was to explore the functional impacts of PRDX6 gene on the biological behavior of cervical squamous cancer cells. Methods: An immunofluorescence assay was applied to evaluate the expression difference of PRDX6 between cervical cancer tissue and normal cervical tissue samples. A lentivirus was used to upregulate and downregulate PRDX6 expression in SiHa cells. Furthermore, the role of PRDX6 on cell proliferation, apoptosis, migration and invasion was evaluated. Additionally, the effect of PRDX6 on the progression of the cervical cancer was investigated via a xenograft model in BALB/c nude mice that either overexpressed or underexpressed PRDX6. Results: The expression of PRDX6 was generally increased in cervical cancer tissues. Furthermore, the overexpression of PRDX6 stimulated the proliferation, migration and invasion of cervical squamous cancer cells, and suppressed cell apoptosis. The opposite results were also obtained after successful knockdown of PRDX6. In addition, the overexpression of PRDX6 significantly promoted the growth of cervical carcinoma in vivo. Conclusions: PRDX6 promoted the proliferation, migration and invasion, and inhibited apoptosis in cervical cancer cells, indicating that PRDX6 is an important promoter of cervical cancer tumorigenicity.
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Affiliation(s)
- Xiaoli Hu
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Ermei Lu
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Chunyu Pan
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Yichi Xu
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Xueqiong Zhu
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China
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Xu J, Su Q, Gao M, Liang Q, Li J, Chen X. Differential Expression And Effects Of Peroxiredoxin-6 On Drug Resistance And Cancer Stem Cell-Like Properties In Non-Small Cell Lung Cancer. Onco Targets Ther 2019; 12:10477-10486. [PMID: 31819528 PMCID: PMC6896930 DOI: 10.2147/ott.s211125] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 10/21/2019] [Indexed: 01/01/2023] Open
Abstract
Objective Cancer stem-like cells (CSC) are thought to be involved in the cisplatin resistance of tumors. This study was designed to investigate the effect of PRDX6 on CSCs present in cisplatin-resistant non-small cell lung cancer (NSCLC) tumors. Materials and methods CD133+/ABCG2+ H1299 CSCs and A549 CSCs were isolated. The IC50 values for cisplatin in treatment of CSCs were detected using the CCK8 assay. Then the isolated cells were identified using CD133. Wnt/β-catenin expression was evaluated by Western blot assays. Specimens of tumor and adjacent para-carcinoma tissue were collected from 30 NSCLC patients and examined by immunohistochemistry (IHC), qRT-PCR, and Western blotting to determine and compare their levels of PRDX6 and CD133 expression. Finally, siRNA-mediated silencing of PRDX6 was employed with both types of CSCs to determine the impact of PRDX6 on CD133 enrichment by flow cytometry, cell viability, and sphere formation ability. Results High levels of PRDX6 and CD133 expression were detected in samples of tumor tissue from NSCLC patients, and expression of PRDX6 and CD13 presented a positive relationship. Increasing levels of cisplatin resistance and upregulated levels of PRDX6, ABCG2, Wnt, and β-catenin expression were detected in CD133+/ABCG2+ H1299 and A549 CSCs. Transfection with siRNA targeting PRDX6 changed these cellular characteristics by decreasing the levels of PRDX6, ABCG2, Wnt, and β-catenin expression. We further demonstrated that exogenous silencing of PRDX6 effectively inhibited the sphere formation ability of CSCs and re-sensitized them to cisplatin. Conclusion Our results strongly suggest that PRDX6 promotes cisplatin resistance in human lung cancer cells by promoting the stem-like properties of cancer cells. Our findings also suggest PRDX6 as a target for treating cisplatin resistant NSCLC.
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Affiliation(s)
- Jun Xu
- Department of Cardiothoracic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan 637000, People's Republic of China
| | - Qiang Su
- Department of Pharmacy, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Mingxia Gao
- Department of Ultrasound, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Qingsong Liang
- Department of Cardiothoracic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan 637000, People's Republic of China
| | - Junfeng Li
- Department of Cardiothoracic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan 637000, People's Republic of China
| | - Xu Chen
- Department of Cardiothoracic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan 637000, People's Republic of China
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Lu B, Chen XB, Hong YC, Zhu H, He QJ, Yang B, Ying MD, Cao J. Identification of PRDX6 as a regulator of ferroptosis. Acta Pharmacol Sin 2019; 40:1334-1342. [PMID: 31036877 DOI: 10.1038/s41401-019-0233-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 03/18/2019] [Indexed: 01/15/2023] Open
Abstract
Ferroptosis is a newly characterized iron-dependent form of nonapoptotic regulated cell death triggered by lipid reactive oxygen species (LOOH). The dysregulation of ferroptosis is highly related to cancer, and the induction of ferroptosis is also proposed as a potential strategy for cancer therapy. Although several key regulators have been identified that are involved in ferroptosis, the molecular mechanism underlying this process remains largely unknown. Here, we report that Peroxiredoxin-6 (PRDX6) is a bona fide negative regulator of ferroptotic cell death. The knockdown of intracellular PRDX6 significantly enhances LOOH and ferroptotic cell death triggered by ferroptosis inducers (Erastin and RSL-3), which is correlated with the transcriptional activation of heme oxygenase-1. Moreover, overexpression of heme oxygenase-1 enhances both Erastin- and RSL-3-triggered LOOH, suggesting that heme oxygenase-1 mediates PRDX6 silencing-enhanced ferroptosis. More importantly, the application of a specific PRDX6 phospholipase A2 (iPLA2) inhibitor, MJ-33, synergistically enhances the ferroptosis induced by Erastin, suggesting that PRDX6 removes LOOH through its iPLA2 activity. Thus, our findings reveal an essential role of PRDX6 in protecting cells against ferroptosis and provide a potential target to improve the antitumor activity of ferroptosis-based chemotherapy.
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Lee DH, Jung YY, Park MH, Jo MR, Han SB, Yoon DY, Roh YS, Hong JT. Peroxiredoxin 6 Confers Protection Against Nonalcoholic Fatty Liver Disease Through Maintaining Mitochondrial Function. Antioxid Redox Signal 2019; 31:387-402. [PMID: 31007045 DOI: 10.1089/ars.2018.7544] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Aims: Nonalcoholic fatty liver disease (NAFLD) is accompanied by excessive reactive oxygen species (ROS) production, which has been suggested in several studies to link with mitochondrial function. However, the mechanistic role of ROS-mediated regulation of mitochondrial function in NAFLD has not been elucidated. Since peroxiredoxin 6 (PRDX6) is the only member of the antioxidant PRDX family that translocates to damaged mitochondria, we investigated the PRDX6-mediated antisteatotic mechanism using genetically modified mice and cells. Results: PRDX6 mice were more protective to lipid accumulation, liver injury, and insulin resistance after a high-fat diet. Mechanistically, PRDX6 is required for induction of mitochondrial antioxidant action and beta-oxidation through maintaining mitochondrial integrity and subsequently prevents ROS-induced lipogenesis. Interestingly, oxidative stress-induced Notch signaling was suppressed in PRDX6 mice compared with wild-type mice, and genetic and pharmacological inhibition of Notch signaling improved lipid accumulation. Finally, PRDX knockdown or Notch inhibition reduced induction of mitophagy. PRDX6 antagonizes positive feedback loop between lipid accumulation and ROS production through regulation of mitochondrial function. Innovation: For the first time, we demonstrate that PRDX6 maintains mitochondria integrity under oxidative stress and protects against NAFLD progression by inhibition of Notch signaling. Conclusion: This study describes a novel molecular mechanism underlying the antisteatotic activity of PRDX6, which may be a new therapeutic strategy for the treatment of NAFLD.
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Affiliation(s)
- Dong Hun Lee
- 1 College of Pharmacy and Medical Research Center, Department of Pharmacy Chungbuk National University, Cheongju, South Korea
| | - Yu Yeon Jung
- 2 Department of Dental Hygiene, Gwangyang Health Sciences University, Gwangyang, South Korea
| | - Mi Hee Park
- 1 College of Pharmacy and Medical Research Center, Department of Pharmacy Chungbuk National University, Cheongju, South Korea
| | - Mi Ran Jo
- 1 College of Pharmacy and Medical Research Center, Department of Pharmacy Chungbuk National University, Cheongju, South Korea
| | - Sang Bae Han
- 1 College of Pharmacy and Medical Research Center, Department of Pharmacy Chungbuk National University, Cheongju, South Korea
| | - Do Young Yoon
- 3 Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul, South Korea
| | - Yoon Seok Roh
- 1 College of Pharmacy and Medical Research Center, Department of Pharmacy Chungbuk National University, Cheongju, South Korea
| | - Jin Tae Hong
- 1 College of Pharmacy and Medical Research Center, Department of Pharmacy Chungbuk National University, Cheongju, South Korea
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30
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Lubec J, Smidak R, Malikovic J, Feyissa DD, Korz V, Höger H, Lubec G. Dentate Gyrus Peroxiredoxin 6 Levels Discriminate Aged Unimpaired From Impaired Rats in a Spatial Memory Task. Front Aging Neurosci 2019; 11:198. [PMID: 31417400 PMCID: PMC6684764 DOI: 10.3389/fnagi.2019.00198] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 07/16/2019] [Indexed: 12/29/2022] Open
Abstract
Similar to humans, the normal aged rat population is not homogeneous in terms of cognitive function. Two distinct subpopulations of aged Sprague-Dawley rats can be identified on the basis of spatial memory performance in the hole-board paradigm. It was the aim of the study to reveal protein changes relevant to aging and spatial memory performance. Aged impaired (AI) and unimpaired (AU) male rats, 22-24 months old were selected from a large cohort of 160 animals; young animals served as control. Enriched synaptosomal fractions from dentate gyrus from behaviorally characterized old animals were used for isobaric tags labeling based quantitative proteomic analysis. As differences in peroxiredoxin 6 (PRDX6) levels were a pronounced finding, PRDX6 levels were also quantified by immunoblotting. AI showed impaired spatial memory abilities while AU performed comparably to young animals. Our study demonstrates substantial quantitative alteration of proteins involved in energy metabolism, inflammation and synaptic plasticity during aging. Moreover, we identified protein changes specifically coupled to memory performance of aged rats. PRDX6 levels clearly differentiated AI from AU and levels in AU were comparable to those of young animals. In addition, it was observed that stochasticity in protein levels increased with age and discriminate between AI and AU groups. Moreover, there was a significantly higher variability of protein levels in AI. PRDX6 is a member of the PRDX family and well-defined as a cystein-1 PRDX that reduces and detoxifies hydroxyperoxides. It is well-known and documented that the aging brain shows increased active oxygen species but so far no study proposed a potential target with antioxidant activity that would discriminate between impaired and unimpaired memory performers. Current data, representing so far the largest proteomics data set in aging dentate gyrus (DG), provide the first evidence for a probable role of PRDX6 in memory performance.
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Affiliation(s)
- Jana Lubec
- Department of Neuroproteomics, Paracelsus Private Medical University, Salzburg, Austria
| | - Roman Smidak
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Jovana Malikovic
- Core Unit of Biomedical Research, Division of Laboratory Animal Science and Genetics, Medical University of Vienna, Himberg, Austria
| | - Daniel Daba Feyissa
- Department of Neuroproteomics, Paracelsus Private Medical University, Salzburg, Austria
| | - Volker Korz
- Department of Neuroproteomics, Paracelsus Private Medical University, Salzburg, Austria
| | - Harald Höger
- Core Unit of Biomedical Research, Division of Laboratory Animal Science and Genetics, Medical University of Vienna, Himberg, Austria
| | - Gert Lubec
- Department of Neuroproteomics, Paracelsus Private Medical University, Salzburg, Austria
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Park KR, Yun HM, Yeo IJ, Cho S, Hong JT, Jeong YS. Peroxiredoxin 6 Inhibits Osteogenic Differentiation and Bone Formation Through Human Dental Pulp Stem Cells and Induces Delayed Bone Development. Antioxid Redox Signal 2019; 30:1969-1982. [PMID: 29792351 DOI: 10.1089/ars.2018.7530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Aims: Peroxiredoxins (PRDXs) are thiol-specific antioxidant enzymes that regulate redox balance that are critical for maintaining the cellular potential for self-renewal and stemness. Stem cell-based regenerative medicine is a promising approach in tissue reconstruction. However, to obtain functional cells for use in clinical applications, stem cell technology still requires improvements. Results: In this study, we found that PRDX6 levels were decreased during osteogenic differentiation in human dental pulp stem cells (hDPSCs). hDPSCs stably expressing Myc-PRDX6 (hDPSC/myc-PRDX6) inhibited cell growth in hDPSCs during osteogenic differentiation and impaired osteogenic phenotypes such as alkaline phosphatase (ALP) activity, mineralized nodule formation, and osteogenic marker genes [ALP and osteocalcin (OCN)]. hDPSC cell lines stably expressing mutant glutathione peroxidase (PRDX6(C47S)) and independent phospholipase A2 (PRDX6(S32A)) were also generated. Each mutant form of PRDX6 abolished the impaired osteogenic phenotypes, the transforming growth factor-β-mediated Smad2 and p38 pathways, and RUNX2 expression. Furthermore, in vivo experiments revealed that hDPSC/myc-PRDX6 suppressed hDPSC-based bone regeneration in calvarial defect mice, and newborn PRDX6 transgenic mice exhibited delayed bone development and reduced RUNX2 expression. Innovation and Conclusion: These findings illuminate the effects of PRDX6 during osteogenic differentiation of hDPSCs, and also suggest that regulating PRDX6 may improve the clinical utility of stem cell-based regenerative medicine for the treatment of bone diseases. Antioxid. Redox Signal. 30, 1969-1982.
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Affiliation(s)
- Kyung-Ran Park
- 1 Department of Oral and Maxillofacial Regeneration, Kyung Hee University, Seoul, Republic of Korea.,2 College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Hyung-Mun Yun
- 3 Department of Oral and Maxillofacial Pathology, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - In Jun Yeo
- 2 College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Sehyung Cho
- 4 Department of Physiology, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Jin Tae Hong
- 2 College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Yong Seok Jeong
- 5 Department of Biology and Research Institute of Basic Sciences, College of Sciences, Kyung Hee University, Seoul, Republic of Korea
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32
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Zha X, Wu G, Zhang H, Yang Y, Zhang Y, Ma L. PRDX6 regulates the H2O2 and blue light-induced APRE-19 cell apoptosis via down-regulating and interacting with RARA. Anim Cells Syst (Seoul) 2019; 23:241-245. [PMID: 31489244 PMCID: PMC6711153 DOI: 10.1080/19768354.2019.1592021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 12/27/2018] [Indexed: 12/22/2022] Open
Abstract
Hereditary retinal disease (HRD) is the primary retinal degeneration that leads to severe visual impairments and refractory blindness, and the therapy of HRD was most important in ophthalmology. The apoptosis of retinal cells plays important roles in HRD progression. Therefore, in this study, we explore the mechanism of H2O2 and blue light-induced apoptosis of ARPE-19 cells. Co-immunoprecipitation (Co-IP) is employed to test the interactions between proteins, and western blotting is used to detect the protein levels. Apoptosis is analyzed by Flow cytometry. Our results found that PRDX6 could interact with RARA in ARPE-19 cells, and H2O2 and blue light could significantly reduce the RARA protein expression, and also could inhibit the interaction between PRDX6 and RARA. Using a rescue experiment, we further elucidated that H2O2 and blue light reduced the RARA expression via down-regulating PRDX6. And H2O2 and blue light induced the ARPE-19 cell apoptosis via decreasing the expression of PRDX6. Our results suggested that the interaction between PRDX6 and RARA played important roles in the apoptosis of ARPE-19 cells.
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Affiliation(s)
- Xu Zha
- Department of the Ophthalmology, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Guojiu Wu
- Department of the Ophthalmology, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Hong Zhang
- Department of the Ophthalmology, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Yanni Yang
- Department of the Ophthalmology, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Yuanping Zhang
- Department of the Ophthalmology, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Linkun Ma
- Department of the Ophthalmology, Second Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
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Atilano SR, Lee DH, Fukuhara PS, Chwa M, Nesburn AB, Udar N, Kenney MC. Corneal Oxidative Damage in Keratoconus Cells due to Decreased Oxidant Elimination from Modified Expression Levels of SOD Enzymes, PRDX6, SCARA3, CPSF3, and FOXM1. J Ophthalmic Vis Res 2019; 14:62-70. [PMID: 30820289 PMCID: PMC6388514 DOI: 10.4103/jovr.jovr_80_18] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Purpose: To compare the levels of gene expression for enzymes involved in production and elimination of reactive oxygen/nitrogen species (ROS/RNS) in normal human corneal cells (NL cells) with those in human corneal cells with keratoconus (KC cells) in vitro. Methods: Primary NL and KC stromal fibroblast cultures were incubated with apocynin (an inhibitor of NADPH oxidase) or N-nitro-L-arginine (N-LLA; an inhibitor of nitric oxide synthase). ROS/RNS levels were measured using an H2 DCFDA fluorescent assay. The RT2 Profiler™ PCR Array for Oxidative Stress and Antioxidant Defense was used for initial screening of the NL and KC cultures. Transcription levels for genes related to production or elimination of ROS/RNS were analyzed using quantitative PCR. Immunohistochemistry was performed on 10 intact human corneas using antibodies against SCARA3 and CPSF3. Results: Array screening of 84 antioxidant-related genes identified 12 genes that were differentially expressed between NL and KC cultures. Compared with NL cells, quantitative PCR showed that KC cells had decreased expression of antioxidant genes SCARA3 isoform 2 (0.59-fold, P = 0.02) and FOXM1 isoform 1 (0.61-fold, P = 0.03). KC cells also had downregulation of the antioxidant genes SOD1 (0.4-fold, P = 0.0001) and SOD3 (0.37-fold, P = 0.02) but increased expression of SOD2 (3.3-fold, P < 0.0001), PRDX6 (1.47-fold, P = 0.01), and CPSF3 (1.44-fold, P = 0.02). Conclusion: The difference in expression of antioxidant enzymes between KC and NL suggests that the oxidative stress imbalances found in KC are caused by defects in ROS/RNS removal rather than increased ROS/RNS production.
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Affiliation(s)
- Shari R Atilano
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, USA
| | - Daniel H Lee
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, USA
| | - Paula S Fukuhara
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, USA
| | - Marilyn Chwa
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, USA
| | - Anthony B Nesburn
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, USA.,Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Nitin Udar
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, USA
| | - M Cristina Kenney
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, USA.,Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, USA
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Huang WS, Huang CY, Hsieh MC, Kuo YH, Tung SY, Shen CH, Hsieh YY, Teng CC, Lee KC, Lee KF, Kuo HC. Expression of PRDX6 Correlates with Migration and Invasiveness of Colorectal Cancer Cells. Cell Physiol Biochem 2018; 51:2616-2630. [PMID: 30562740 DOI: 10.1159/000495934] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 12/03/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Colorectal cancer (CRC) is the third most common type of cancer and the second leading cause of cancer-related deaths worldwide. PRDXs are antioxidant enzymes that play an important role in cell differentiation, proliferation and apoptosis and have diverse functions in malignancy development. However, the mechanism of aberrant overexpression of PRDX6 in CRC remains unclear. METHODS Boyden chamber assay, flow cytometry and a lentiviral shRNA targeting PRDX6 and transient transfection with pCMV-6-PRDX6 plasmid were used to examine the role of PRDX6 in the proliferation capacity and invasiveness of CRC cells. Immunohistochemistry (IHC) with tissue array containing 40 paraffin- embedded CRC tissue specimens and Western blot assays were used to detect target proteins. RESULTS PRDX6 was significantly up-expressed in different comparisons of metastasis of colorectal adenomas in node-positive CRC (P = 0.03). In in vitro HCT-116, PRDX6 silencing markedly suppressed CRC cell migration and invasiveness while also inducing cell cycle arrest as well as the generation of reactive oxygen species (ROS); specific overexpression of PRDX6 had the opposite effect. Mechanistically, the PRDX6 inactivation displayed decreased levels of PRDX6, N-cadherin, β-catenin, Vimentin, Slug, Snail and Twist-1 through the activation of the PI3K/ AKT/p38/p50 pathways, but they were also significantly inhibited by PRDX6 transfectants. There was also increased transcriptional activation of dimethylation of histone H3 lysine 4 (H3K4me3) of PRDX6 promoter via the activation of the PI3K/Akt/NFkB pathways. CONCLUSION Our findings demonstrated that PRDX6 expression plays a characteristic growth-promoting role in CRC metastasis. This study suggests that PRDX6 may serve as a biomarker of node-positive status and may have a role as an important endogenous regulator of cancer cell tumorigenicity in CRC. PRDX6 may also be an effective therapeutic target.
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Affiliation(s)
- Wen-Shih Huang
- Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.,Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Cheng-Yi Huang
- Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Meng-Chiao Hsieh
- Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Hung Kuo
- Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shui-Yi Tung
- Chang Gung University College of Medicine, Taoyuan, Taiwan.,Department of Hepato-Gastroenterology, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Chien-Heng Shen
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Hepato-Gastroenterology, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Yung-Yu Hsieh
- Department of Hepato-Gastroenterology, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Chih-Chuan Teng
- Institute of Nursing and Department of Nursing, Chang Gung Institute of Technology Chiayi Campus, Chiayi, Taiwan.,Research Fellow, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Ko-Chao Lee
- Department of Colorectal Surgery, Department of Surgery, Chang Gung Memorial Hospital - Kaohsiung Medical Center, Kaohsiung, Taiwan
| | - Kam-Fai Lee
- Department of Pathology, Chang Gung Memorial Hospital at Chiayi, Chiayi,
| | - Hsing-Chun Kuo
- Institute of Nursing and Department of Nursing, Chang Gung Institute of Technology Chiayi Campus, Chiayi, Taiwan.,Research Fellow, Chang Gung Memorial Hospital, Chiayi, Taiwan.,Chronic Diseases and Health Promotion Research Center, CGUST, Chiayi, Taiwan.,Research Center for Industry of Human Ecology and Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan
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Yeo IJ, Park MH, Son DJ, Kim JY, Nam KT, Hyun BK, Kim SY, Jung MH, Song MJ, Chun HO, Lee TH, Han SB, Hong JT. PRDX6 Inhibits Neurogenesis through Downregulation of WDFY1-Mediated TLR4 Signal. Mol Neurobiol 2019; 56:3132-44. [PMID: 30097850 DOI: 10.1007/s12035-018-1287-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 07/30/2018] [Indexed: 12/22/2022]
Abstract
Impaired neurogenesis has been associated with several brain disorders, such as Alzheimer’s disease (AD) and Parkinson’s disease (PD). The role of peroxiredoxin 6 (PRDX6) in neurodegenerative diseases is very controversial. To demonstrate the role of PRDX6 in neurogenesis, we compared the neurogenesis ability of PRDX6-overexpressing transgenic (Tg) mice and wild-type mice and studied the involved molecular mechanisms. We showed that the neurogenesis of neural stem cells (NSCs) and the expression of the marker protein were lower in PRDX6 Tg-mice than in wild-type mice. To determine the factors involved in PRDX6-related neural stem cell impairment, we performed a microarray experiment. We showed that the expression of WDFY1 was dramatically decreased in PRDX6-Tg mice. Moreover, WDFY1 siRNA decreases the differentiation ability of primary neural stem cells. Interestingly, WDFY1 reportedly recruits the signaling adaptor TIR-domain-containing adapter-inducing interferon-β (TRIF) to toll-like receptors (TLRs); thus, we showed the relationship among TLRs, PRDX6, and WDFY1. We showed that TLR4 was dramatically reduced in PRDX6 Tg mice, and reduced TLR4 expression and neurogenesis was reversed by the introduction of WDFY1 plasmid in the neural stem cells from PRDX6 Tg mice. This study indicated that PRDX6 inhibits the neurogenesis of neural precursor cells through TLR4-dependent downregulation of WDFY1 and suggested that the inhibitory effect of PRDX6 on neurogenesis play a role in the development of neurodegenerative diseases in the PRDX6 overexpressing transgenic mice.
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Park MH, Yun HM, Hwang CJ, Park SI, Han SB, Hwang DY, Yoon DY, Kim S, Hong JT. Presenilin Mutation Suppresses Lung Tumorigenesis via Inhibition of Peroxiredoxin 6 Activity and Expression. Theranostics 2017; 7:3624-3637. [PMID: 29109765 PMCID: PMC5667337 DOI: 10.7150/thno.21408] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 06/24/2017] [Indexed: 01/01/2023] Open
Abstract
Some epidemiological studies suggest an inverse correlation between cancer incidence and Alzheimer's disease (AD). In this study, we demonstrated experimental evidences for this inverse relationship. In the co-expression network analysis using the microarray data and GEO profile of gene expression omnibus data analysis, we showed that the expression of peroxiredoxin 6 (PRDX6), a tumor promoting protein was significantly increased in human squamous lung cancer, but decreased in mutant presenilin 2 (PS2) containing AD patient. We also found in animal model that mutant PS2 transgenic mice displayed a reduced incidence of spontaneous and carcinogen-induced lung tumor development compared to wildtype transgenic mice. Agreed with network and GEO profile study, we also revealed that significantly reduced expression of PRDX6 and activity of iPLA2 in these animal models. PS2 mutations increased their interaction with PRDX6, thereby increasing iPLA2 cleavage via increased γ-secretase leading to loss of PRDX6 activity. However, knockdown or inhibition of γ-secretase abolished the inhibitory effect of mutant PSs. Moreover, PS2 mutant skin fibroblasts derived from patients with AD showed diminished iPLA2 activity by the elevated γ-secretase activity. Thus, the present data suggest that PS2 mutations suppress lung tumor development by inhibiting the iPLA2 activity of PRDX6 via a γ-secretase cleavage mechanism and may explain the inverse relationship between cancer and AD incidence.
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Lee HL, Park MH, Son DJ, Song HS, Kim JH, Ko SC, Song MJ, Lee WH, Yoon JH, Ham YW, Han SB, Hong JT. Anti-cancer effect of snake venom toxin through down regulation of AP-1 mediated PRDX6 expression. Oncotarget 2016; 6:22139-51. [PMID: 26061816 PMCID: PMC4673152 DOI: 10.18632/oncotarget.4192] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 05/20/2015] [Indexed: 11/25/2022] Open
Abstract
Snake venom toxin (SVT) from Vipera lebetina turanica contains a mixture of different enzymes and proteins. Peroxiredoxin 6 (PRDX6) is known to be a stimulator of lung cancer cell growth. PRDX6 is a member of peroxidases, and has calcium-independent phospholipase A2 (iPLA2) activities. PRDX6 has an AP-1 binding site in its promoter region of the gene. Since AP-1 is implicated in tumor growth and PRDX6 expression, in the present study, we investigated whether SVT inhibits PRDX6, thereby preventing human lung cancer cell growth (A549 and NCI-H460) through inactivation of AP-1. A docking model study and pull down assay showed that SVT completely fits on the basic leucine zipper (bZIP) region of c-Fos of AP-1. SVT (0–10 μg/ml) inhibited lung cancer cell growth in a concentration dependent manner through induction of apoptotic cell death accompanied by induction of cleaved caspase-3, -8, -9, Bax, p21 and p53, but decreased cIAP and Bcl2 expression via inactivation of AP-1. In an xenograft in vivo model, SVT (0.5 mg/kg and 1 mg/kg) also inhibited tumor growth accompanied with the reduction of PRDX6 expression, but increased expression of proapoptotic proteins. These data indicate that SVT inhibits tumor growth via inhibition of PRDX6 activity through interaction with its transcription factor AP-1.
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Affiliation(s)
- Hye Lim Lee
- College of Pharmacy, Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk, Republic of Korea
| | - Mi Hee Park
- College of Pharmacy, Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk, Republic of Korea
| | - Dong Ju Son
- College of Pharmacy, Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk, Republic of Korea
| | - Ho Sueb Song
- Department of Acupuncture & Moxibustion Medicine, College of Korean Medicine, Gachon University, Bokjeong-dong, Sujeong-gu, Seongnam, Gyeonggii, Republic of Korea
| | - Jung Hyun Kim
- Department of Acupuncture & Moxibustion Medicine, College of Korean Medicine, Gachon University, Bokjeong-dong, Sujeong-gu, Seongnam, Gyeonggii, Republic of Korea
| | - Seong Cheol Ko
- Department of Acupuncture & Moxibustion Medicine, College of Korean Medicine, Gachon University, Bokjeong-dong, Sujeong-gu, Seongnam, Gyeonggii, Republic of Korea
| | - Min Jong Song
- Department of Obstetrics and Gynecology, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Jung-gu, Daejeon, Republic of Korea
| | - Won Hyoung Lee
- Department of Nuclear Medicine Chungbuk National University Hospital, Seowon, Cheongju, Chungbuk, Republic of Korea
| | - Joo Hee Yoon
- Department of Obstetrics and Gynecology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Paldal-gu, Suwon, Gyeonggi-do, Republic of Korea
| | - Young Wan Ham
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah, USA
| | - Sang Bae Han
- College of Pharmacy, Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy, Medical Research Center, Chungbuk National University, Osong-eup, Heungduk-gu, Cheongju, Chungbuk, Republic of Korea
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Yun HM, Park KR, Kim EC, Hong JT. PRDX6 controls multiple sclerosis by suppressing inflammation and blood brain barrier disruption. Oncotarget 2016; 6:20875-84. [PMID: 26327204 PMCID: PMC4673236 DOI: 10.18632/oncotarget.5205] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 08/12/2015] [Indexed: 01/08/2023] Open
Abstract
Multiple sclerosis (MS) is a complex disease with an unknown etiology and has no effective medications despite extensive research. Antioxidants suppress oxidative damages which are implicated in the pathogenesis of MS. In this study, we showed that the expression of an antioxidant protein peroxiredoxin 6 (PRDX6) is markedly increased in spinal cord of mice with experimental autoimmune encephalomyelitis (EAE) compared to other PRDXs. PRDX6 transgenic (Tg) mice displayed a significant decrease in clinical severity and attenuated demyelination in EAE compared to wide type mice. The increased PRDX6 expression in astrocytes of EAE mice and MS patients reduced MMP9 expression, fibrinogen leakage, chemokines, and free radical stress, leading to reduction in blood-brain-barrier (BBB) disruption, peripheral immune cell infiltration, and neuroinflammation. Together, these findings suggest that PRDX6 expression may represent a therapeutic way to restrict inflammation in the central nervous system and potentiate oligodendrocyte survival, and suggest a new molecule for neuroprotective therapies in MS.
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Affiliation(s)
- Hyung-Mun Yun
- Department of Maxillofacial Tissue Regeneration, School of Dentistry and Research Center for Tooth and Periodontal Regeneration (MRC), Kyung Hee University, Dongdaemun-gu, Republic of Korea
| | - Kyung-Ran Park
- Department of Maxillofacial Tissue Regeneration, School of Dentistry and Research Center for Tooth and Periodontal Regeneration (MRC), Kyung Hee University, Dongdaemun-gu, Republic of Korea
| | - Eun-Cheol Kim
- Department of Maxillofacial Tissue Regeneration, School of Dentistry and Research Center for Tooth and Periodontal Regeneration (MRC), Kyung Hee University, Dongdaemun-gu, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
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Sorrell SL, Golder ZJ, Johnstone DB, Frankl FEK. Renal peroxiredoxin 6 interacts with anion exchanger 1 and plays a novel role in pH homeostasis. Kidney Int 2016; 89:105-12. [PMID: 26398495 DOI: 10.1038/ki.2015.277] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 07/07/2015] [Accepted: 07/09/2015] [Indexed: 12/11/2022]
Abstract
Peroxiredoxin 6 (PRDX6) is one of six members of the PRDX family, which have peroxidase and antioxidant activity. PRDX6 is unique, containing only one conserved cysteine residue (C47) rather than the two found in other PRDXs. A yeast two-hybrid screen found PRDX6 to be a potential binding partner of the C-terminal tail of anion exchanger 1 (AE1), a Cl−/HCO3− exchanger basolaterally expressed in renal α-intercalated cells. PRDX6 immunostaining in human kidney was both cytoplasmic and peripheral and co-localized with AE1. Analysis of native protein showed it was largely monomeric, whereas expressed tagged protein was more dimeric. Two methionine oxidation sites were identified. In vitro and ex vivo pulldowns and immunoprecipitation assays confirmed interaction with AE1, but mutation of the conserved cysteine resulted in loss of interaction. Prdx6 knockout mice had a baseline acidosis with a major respiratory component and greater AE1 expression than wild type animals. After an oral acid challenge, PRDX6 expression increased in wild type mice, with preservation of AE1. However, AE1 expression was significantly decreased in knockout animals. Kidneys from acidified mice showed widespread proximal tubular vacuolation in wild type but not knockout animals. Knockdown of PRDX6 by siRNA in mammalian cells reduced both total and cell membrane AE1 levels. Thus, PRDX6-AE1 interaction contributes to maintenance of AE1 during cellular stress such as during metabolic acidosis.
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Ozkosem B, Feinstein SI, Fisher AB, O'Flaherty C. Advancing age increases sperm chromatin damage and impairs fertility in peroxiredoxin 6 null mice. Redox Biol 2015; 5:15-23. [PMID: 25796034 PMCID: PMC4371547 DOI: 10.1016/j.redox.2015.02.004] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 02/19/2015] [Accepted: 02/22/2015] [Indexed: 12/23/2022] Open
Abstract
Due to socioeconomic factors, more couples are choosing to delay conception than ever. Increasing average maternal and paternal age in developed countries over the past 40 years has raised the question of how aging affects reproductive success of males and females. Since oxidative stress in the male reproductive tract increases with age, we investigated the impact of advanced paternal age on the integrity of sperm nucleus and reproductive success of males by using a Prdx6(-/-) mouse model. We compared sperm motility, cytoplasmic droplet retention sperm chromatin quality and reproductive outcomes of young (2-month-old), adult (8-month-old), and old (20-month-old) Prdx6(-/-) males with their age-matched wild type (WT) controls. Absence of PRDX6 caused age-dependent impairment of sperm motility and sperm maturation and increased sperm DNA fragmentation and oxidation as well as decreased sperm DNA compaction and protamination. Litter size, total number of litters and total number of pups per male were significantly lower in Prdx6(-/-) males compared to WT controls. These abnormal reproductive outcomes were severely affected by age in Prdx6(-/-) males. In conclusion, the advanced paternal age affects sperm chromatin integrity and fertility more severely in the absence of PRDX6, suggesting a protective role of PRDX6 in age-associated decline in the sperm quality and fertility in mice.
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Affiliation(s)
- Burak Ozkosem
- Urology Research Laboratory, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Surgery (Urology Division), Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada
| | - Sheldon I Feinstein
- Institute for Environmental Medicine, University of Pennsylvania, Philadelphia, PA, USA; Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Aron B Fisher
- Institute for Environmental Medicine, University of Pennsylvania, Philadelphia, PA, USA; Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Cristian O'Flaherty
- Urology Research Laboratory, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Surgery (Urology Division), Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada.
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Yun HM, Park KR, Park MH, Kim DH, Jo MR, Kim JY, Kim EC, Yoon DY, Han SB, Hong JT. PRDX6 promotes tumor development via the JAK2/STAT3 pathway in a urethane-induced lung tumor model. Free Radic Biol Med 2015; 80:136-44. [PMID: 25582888 DOI: 10.1016/j.freeradbiomed.2014.12.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 12/23/2014] [Accepted: 12/29/2014] [Indexed: 10/24/2022]
Abstract
Peroxiredoxin 6 (PRDX6) is a bifunctional protein with both glutathione peroxidase (GPx) and iPLA2 activities. Even though several pathophysiological functions have been studied, the definitive role of PRDX6 in tumor growth is not clear. Here, we compared carcinogen-induced tumor growth in PRDX6-transgenic (Tg) mice and non-Tg mice to evaluate the roles of PRDX6 in lung tumor development. Urethane (1g/kg)-induced tumor incidence in PRDX6-Tg mice was significantly higher compared to non-Tg mice. In the tumors of PRDX6-Tg mice, the activation of JAK2/STAT3 and STAT3 DNA binding were also increased, accompanied by increased GPx and iPLA2 activities. PRDX6 was colocalized with JAK2 in tumor tissues and lung cancer cells and also showed physical interaction with JAK2. We found that increasing levels of PRDX6 increase the activation of the JAK2/STAT3 pathway. Furthermore, PRDX6-Tg mice showed altered cytokine levels in the tumors, especially leading to increased CCL5 levels. We validated that the activation of JAK2 was also decreased in lung tumors of CCR5(-/-) mice, and CCL5 increased the JAK2/STAT3 pathway in the lung cancer cells. Thus, our findings suggest that PRDX6 promotes lung tumor development via its mediated and CCL5-associated activation of the JAK2/STAT3 pathway.
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Affiliation(s)
- Hyung-Mun Yun
- Department of Maxillofacial Tissue Regeneration, School of Dentistry and Research Center for Tooth and Periodontal Regeneration (MRC), Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Kyung-Ran Park
- Department of Maxillofacial Tissue Regeneration, School of Dentistry and Research Center for Tooth and Periodontal Regeneration (MRC), Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Mi Hee Park
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Dae Hwan Kim
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Mi Ran Jo
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Ji Young Kim
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Eun-Cheol Kim
- Department of Maxillofacial Tissue Regeneration, School of Dentistry and Research Center for Tooth and Periodontal Regeneration (MRC), Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Do Young Yoon
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 150-716, Republic of Korea
| | - Sang Bae Han
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea.
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Yun HM, Park KR, Lee HP, Lee DH, Jo M, Shin DH, Yoon DY, Han SB, Hong JT. PRDX6 promotes lung tumor progression via its GPx and iPLA2 activities. Free Radic Biol Med 2014; 69:367-76. [PMID: 24512906 DOI: 10.1016/j.freeradbiomed.2014.02.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 01/31/2014] [Accepted: 02/03/2014] [Indexed: 10/25/2022]
Abstract
PRDX6 is a bifunctional protein with both glutathione peroxidase (GPx) and calcium-independent phospholipase A2 (iPLA2) activities, which are concomitantly increased with the expression of PRDX6. PRDX6 promoted lung tumor growth in an in vivo allograft model. Herein, we further studied the vital roles in tumor progression of PRDX6 in lung cancer using nude mice bearing PRDX6-overexpressing lung cancer cells. Nude mice xenografted with PRDX6 showed increases in tumor size and weight compared to control mice. Histopathological and Western blotting examination demonstrated that expression of proliferating cell nuclear antigen, vascular endothelial growth factor, metalloproteinases 2 and 9, and cyclin-dependent kinases accompanied by increased iPLA2 and GPx activities were increased in the tumor tissues of PRDX6-overexpressing nude mice. In tumor tissues of PRDX6-overexpressing mice, the activation of mitogen-activated protein kinases and AP-1 DNA binding were also increased. The growth of lung cancer cell lines (A549 and NCI-H460) was enhanced by the increase in iPLA2 and GPx activities of PRDX6. In addition, mutant PRDX6 (C47S) attenuated PRDX6-mediated p38, ERK1/2, and AP-1 activities as well as its enzyme activities in the A549 and NCI-H460 lines. Furthermore, tumor growth and p38, ERK1/2, and AP-1 activities were also inhibited in nude mice bearing mutant PRDX6 (C47S) compared to PRDX6. Therefore, our findings indicate that PRDX6 promotes lung tumor growth via increased glutathione peroxidase and iPLA2 activities.
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Affiliation(s)
- Hyung-Mun Yun
- College of Pharmacy & Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Kyung-Ran Park
- College of Pharmacy & Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Hee Peum Lee
- College of Pharmacy & Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Dong Hun Lee
- College of Pharmacy & Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Miran Jo
- College of Pharmacy & Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Dea Hwan Shin
- Research Center for Cell Fate Control, College of Pharmacy, Sookmyung Women׳s University, Seoul 140-742, Republic of Korea
| | - Do-Young Yoon
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 150-716, Republic of Korea
| | - Sang Bae Han
- College of Pharmacy & Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea.
| | - Jin Tae Hong
- College of Pharmacy & Medical Research Center, Chungbuk National University, Chungbuk 361-763, Republic of Korea.
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Vicente-Rodríguez M, Gramage E, Herradón G, Pérez-García C. Phosphoproteomic analysis of the striatum from pleiotrophin knockout and midkine knockout mice treated with cocaine reveals regulation of oxidative stress-related proteins potentially underlying cocaine-induced neurotoxicity and neurodegeneration. Toxicology 2013; 314:166-73. [PMID: 24096156 DOI: 10.1016/j.tox.2013.09.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/10/2013] [Accepted: 09/25/2013] [Indexed: 12/21/2022]
Abstract
The neurotrophic factors pleiotrophin (PTN) and midkine (MK) are highly upregulated in different brain areas relevant to drug addiction after administrations of different drugs of abuse, including psychostimulants. We have previously demonstrated that PTN and MK modulate amphetamine-induced neurotoxicity and that PTN prevents cocaine-induced cytotoxicity in NG108-15 and PC12 cells. In an effort to dissect the different mechanisms of action triggered by PTN and MK to exert their protective roles against psychostimulant neurotoxicity, we have now used a proteomic approach to study protein phosphorylation, in which we combined phosphoprotein enrichment, by immobilized metal affinity chromatography (IMAC), with two-dimensional gel electrophoresis and mass spectrometry, in order to identify the phosphoproteins regulated in the striatum of PTN knockout, MK knockout and wild type mice treated with a single dose of cocaine (15mg/kg, i.p.). We identified 7 differentially expressed phosphoproteins: 5'(3')-deoxyribonucleotidase, endoplasmic reticulum resident protein 60 (ERP60), peroxiredoxin-6 (PRDX6), glutamate dehydrogenase 1 (GLUD1), aconitase and two subunits of hemoglobin. Most of these proteins are related to neurodegeneration processes and oxidative stress and their variations specially affect the PTN knockout mice, suggesting a protective role of endogenous PTN against cocaine-induced neural alterations. Further studies are needed to validate these proteins as possible targets against neural alterations induced by cocaine.
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Affiliation(s)
- Marta Vicente-Rodríguez
- Pharmacology Lab, Department of Pharmaceutical and Health Sciences, Facultad de Farmacia, Universidad CEU San Pablo, Madrid, Spain
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