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Mu R, Chang M, Feng C, Cui Y, Li T, Liu C, Wang Y, Guo X. Analysis of the Expression of PRDX6 in Patients with Hepatocellular Carcinoma and its Effect on the Phenotype of Hepatocellular Carcinoma Cells. Curr Genomics 2024; 25:2-11. [PMID: 38544826 PMCID: PMC10964084 DOI: 10.2174/0113892029273682240111052317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 12/07/2023] [Accepted: 12/22/2023] [Indexed: 08/25/2024] Open
Abstract
Objectives This research aimed to study the expression of PRDX6 mRNA in hepatocellular carcinoma (HCC) and its effect on the prognosis of HCC. Moreover, the effect of PRDX6 gene knockdown on the proliferation, migration, and invasion of HepG2 cells mediated by lentivirus was also examined. This study offers a theoretical and experimental basis for further research on the mechanism of PRDX6 in liver cancer and new methods for clinical diagnosis and treatment. Methods RNA sequence data of 369 HCC patients were screened through the TCGA database, and the expression and clinical characteristics of PRDX6 mRNA were analyzed based on high-throughput RNA sequencing data. HepG2 cells were divided into WT, sh-NC and sh-PRDX6 groups. Real-time PCR and Western blot were used to detect the expression levels of the PRDX6 gene and protein, respectively. CCK8 method was used to detect the proliferation activity of HepG2 cells, scratch healing test was used to detect the migration ability, Transwell chamber was used to detect the invasion ability, and Western blot was used to detect the expression levels of PI3K/Akt/mTOR signaling pathway and Notch signaling pathway-related proteins. Results The expression of PRDX6 was significantly correlated with the gender, race, clinical stage, histological grade, and survival time of HCC patients (P < 0.05). Compared with that in WT and sh-NC groups, the expression level of PRDX6 protein in HCC patients was significantly lower (P < 0.01), the proliferation activity of HCC cells was significantly decreased (P < 0.05), and the migration and invasion ability was significantly decreased (P < 0.05) in the sh-PRDX6 group. The expression levels of PI3K, p-Akt, p-mTOR, Notch1, and Hes1 proteins in the sh-PRDX6 group were significantly lower than those in WT and sh-NC groups (P < 0.05). Conclusion The expression of PRDX6 may be closely related to the prognosis of HCC. Lentivirus-mediated PRDX6 knockdown can inhibit the proliferation, migration and invasion of HCC cells, which may be related to its regulating the PI3K/Akt/mTOR and Notch1 signaling pathways. PRDX6 is expected to be a new target for the diagnosis and treatment of liver cancer.
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Affiliation(s)
- Runhong Mu
- Basic Medicine College of Beihua University, Jilin, 132000, P.R. China
| | - Mingzhu Chang
- Basic Medicine College of Beihua University, Jilin, 132000, P.R. China
| | - Chuanbo Feng
- School of Pharmacy, Beihua University, Jilin, 132000, P.R. China
| | - Yunhe Cui
- Basic Medicine College of Beihua University, Jilin, 132000, P.R. China
| | - Tingyu Li
- Basic Medicine College of Beihua University, Jilin, 132000, P.R. China
| | - Chang Liu
- School of Pharmacy, Beihua University, Jilin, 132000, P.R. China
| | - Yilin Wang
- Zhuhai Integrated Traditional Chinese and Western Medicine Hospital, Zhuhai, 519000, China
- Zhuhai Hospital Affiliated to Southern Medical University, Zhuhai, 519000, China
| | - Xiao Guo
- School of Pharmacy, Beihua University, Jilin, 132000, P.R. China
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Zhao C, Peng C, Fan S, Bu R, Wang P, Yan L, Qiu L. Novel 2-Cys Peroxiredoxin gene confers biotic and abiotic stress resistance in Penaeus monodon. FISH & SHELLFISH IMMUNOLOGY 2020; 106:768-775. [PMID: 32828846 DOI: 10.1016/j.fsi.2020.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/08/2020] [Accepted: 08/08/2020] [Indexed: 06/11/2023]
Abstract
Peroxiredoxins (Prxs) are crucial antioxidant proteins that protect against biotic and abiotic stresses in many organisms, ranging from bacteria to mammals. In the present work, a novel 2-Cys Peroxiredoxin gene (PmPrxn), which contains a 153 bp 5'-terminal untranslated region (5'-UTR), a 636 bp open reading frame encoding a protein with 211 amino acids, and an 898 bp 3'-UTR, was successfully identified and characterized in the black tiger shrimp, Penaeus monodon. Tissue-specific expression analysis revealed that the PmPrxn mRNA was ubiquitously expressed and was comparatively highly expressed in the hepatopancreas. To explore the immunity-related and anti-stress roles of PmPrxn, the gills and hepatopancreas were chosen as target tissues in P. monodon and challenged with Vibrio harveyi, Streptococcus agalactiae, and toxic environmental stressors. The results indicate that PmPrxn might play a vital role in response to biotic and abiotic stresses. Furthermore, the antimicrobial and heavy metal toxicity stress-resistance properties of PmPrxn were evaluated and investigated in vitro using a prokaryotic expression system. These results provide useful information that will help further understand the functional mechanisms of PmPrxn in the defense against bacterial pathogens and environmental acute stresses in shrimp.
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Affiliation(s)
- Chao Zhao
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
| | - Chao Peng
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; College of Aqua-life Science and Technology, Shanghai Ocean University, Shanghai, PR China
| | - Sigang Fan
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
| | - Ruiqian Bu
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; College of Aqua-life Science and Technology, Shanghai Ocean University, Shanghai, PR China
| | - Pengfei Wang
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
| | - Lulu Yan
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
| | - Lihua Qiu
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; Key Laboratory of Aquatic Genomics, Ministry of Agriculture, CAFS, Beijing, 100141, PR China.
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A Novel, Rapid, and Simple PMA-qPCR Method for Detection and Counting of Viable Brucella Organisms. J Vet Res 2020; 64:253-261. [PMID: 32587912 PMCID: PMC7305652 DOI: 10.2478/jvetres-2020-0033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 04/28/2020] [Indexed: 11/20/2022] Open
Abstract
Introduction The plate counting method widely used at present to discern viable from non-viable Brucella in the host or cell is time-consuming and laborious. Therefore, it is necessary to establish a rapid, simple method for detecting and counting viable Brucella organisms. Material and Methods Using propidium monoazide (PMA) to inhibit amplification of DNA from dead Brucella, a novel, rapid PMA-quantitative PCR (PMA-qPCR) detection method for counting viable Brucella was established. The standard recombinant plasmid with the target BCSP31 gene fragment inserted was constructed for drawing a standard curve. The reaction conditions were optimised, and the sensitivity, specificity, and repeatability were analysed. Results The optimal exposure time and working concentration of PMA were 10 min and 15 μg/mL, respectively. The correlation coefficient (R2) of the standard curve was 0.999. The sensitivity of the method was 103 CFU/mL, moreover, its specificity and repeatability also met the requirements. The concentration of B. suis measured by the PMA-qPCR did not differ significantly from that measured by the plate counting method, and the concentrations of viable bacteria in infected cells determined by the two methods were of the same order of magnitude. Conclusion In this study, a rapid and simple PMA-qPCR counting method for viable Brucella was established, which will facilitate related research.
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Zhang SJ, Guo X, Hu P, Lu SY, Liu NN, Fu BQ, Wang N, Li YS, Wang LL, Chang J, Chang HZ, Liu ZS, Zhou Y, Ren HL. Characterization of a Novel Interleukin-1 Receptor Antagonist from Sheep ( Ovis aries). J Interferon Cytokine Res 2020; 40:268-278. [PMID: 32233931 DOI: 10.1089/jir.2019.0182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Interleukin-1 receptor antagonist (IL-1Ra) is an antagonist of IL-1β binding IL-1β receptors but does not induce intracellular responses or signal transduction. In this study, the full-length complementary DNA (cDNA) of the IL-1Ra gene (OaIL-1Ra) was identified from sheep (Ovis aries) using rapid amplification of cDNA ends PCR and submitted to GenBank with the accession number KC425613. The OaIL-1Ra cDNA comprised an open reading frame of 525 bp encoding a protein of 19765.8 Da, a 5'-untranslated region (UTR) of 27 bp, and a 3'-UTR of 676 bp with a poly(A) tail. Recombinant OaIL-1Ra with bioactivity was expressed in a prokaryotic expression system, and a monoclonal antibody against native OaIL-1Ra was prepared. Through Western blot analyses, the OaIL-1Ra protein was widely expressed in lung, heart, spleen, liver, kidney, muscle, intestine, lymphonodi, rumen, and white blood cells, with the highest levels in liver and spleen. The expression of OaIL-1Ra in primary cultured white blood cells of sheep were highly induced in a time-dependent manner when challenged with different bacteria. These results implied that OaIL-1Ra is associated with immune responses during bacterial infections.
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Affiliation(s)
- Shi-Jun Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xing Guo
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China.,Panjin Inspection and Testing Center, Panjin, China
| | - Pan Hu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Shi-Ying Lu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Nan-Nan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Bao-Quan Fu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Nan Wang
- Jilin Provincal Center for Animal Disease Control and Prevention, Changchun, China
| | - Yan-Song Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Lu-Lu Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jiang Chang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Heng-Zhen Chang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zeng-Shan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yu Zhou
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
| | - Hong-Lin Ren
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Changchun, China
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Tolomeo AM, Carraro A, Bakiu R, Toppo S, Garofalo F, Pellegrino D, Gerdol M, Ferro D, Place SP, Santovito G. Molecular characterization of novel mitochondrial peroxiredoxins from the Antarctic emerald rockcod and their gene expression in response to environmental warming. Comp Biochem Physiol C Toxicol Pharmacol 2019; 225:108580. [PMID: 31374295 DOI: 10.1016/j.cbpc.2019.108580] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/17/2019] [Accepted: 07/26/2019] [Indexed: 02/07/2023]
Abstract
In the present study we describe the molecular characterization of the two paralogous mitochondrial peroxiredoxins from Trematomus bernacchii, a teleost that plays a pivotal role in the Antarctic food chain. The two putative amino acid sequences were compared with orthologs from other fish, highlighting a high percentage of identity and similarity with the respective variant, in particular for the residues that are essential for the characteristic peroxidase activity of these enzymes. The temporal expression of Prdx3 and Prdx5 mRNAs in response to short-term thermal stress showed a general upregulation of prdx3, suggesting that this isoform is the most affected by temperature increase. These data, together with the peculiar differences between the molecular structures of the two mitochondrial Prdxs in T. bernacchii as well as in the tropical species Stegastes partitus, suggest an adaptation that allowed these poikilothermic aquatic vertebrates to colonize very different environments, characterized by different temperature ranges.
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Affiliation(s)
- A M Tolomeo
- Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - A Carraro
- Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - R Bakiu
- Department of Aquaculture and Fisheries, Agricultural University of Tirana, Tirana, Albania
| | - S Toppo
- Department of Molecular Medicine, University of Padova, Italy
| | - F Garofalo
- Departmentof of Biology, Ecology and Earth Sciences (B.E.S.T.), University of Calabria, Arcavacata di Rende, Italy
| | - D Pellegrino
- Departmentof of Biology, Ecology and Earth Sciences (B.E.S.T.), University of Calabria, Arcavacata di Rende, Italy
| | - M Gerdol
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - D Ferro
- Department of Pharmacology, University of Arizona, Tucson, AZ, USA
| | - S P Place
- Department of Biology, Sonoma State University, Rohnert Park, CA, USA
| | - G Santovito
- Department of Biology, University of Padova, Padova, Italy.
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Wang LL, Chen XF, Hu P, Lu SY, Fu BQ, Li YS, Zhai FF, Ju DD, Zhang SJ, Shui YM, Chang J, Ma XL, Su B, Zhou Y, Liu ZS, Ren HL. Host Prdx6 contributing to the intracellular survival of Brucella suis S2 strain. BMC Vet Res 2019; 15:304. [PMID: 31438945 PMCID: PMC6704487 DOI: 10.1186/s12917-019-2049-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 08/12/2019] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND Brucellosis is a worldwide zoonotic infectious disease that is transmitted in various ways and causes great harm to humans and animals. The brucellosis pathogen is Brucella, which mainly resides in macrophage cells and survives and replicates in host cells. However, the mechanisms underlying Brucella survival in macrophage cells have not been thoroughly elucidated to date. Peroxiredoxin 6 (Prdx6) is a bifunctional protein that shows not only GSH peroxidase activity but also phospholipase A2 activity and plays important roles in combating oxidative damage and regulating apoptosis. RESULTS Recombinant mouse (Mus musculus) Prdx6 (MmPrdx6) was expressed and purified, and monoclonal antibodies against MmPrdx6 were prepared. Using the Brucella suis S2 strain to infect RAW264.7 murine macrophages, the level of intracellular Prdx6 expression first decreased and later increased following infection. Overexpressing Prdx6 in macrophages resulted in an increase in B. suis S2 strain levels in RAW264.7 cells, while knocking down Prdx6 reduced the S2 levels in cells. CONCLUSIONS Host Prdx6 can increase the intracellular survival of B. suis S2 strain and plays a role in Brucella infection.
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Affiliation(s)
- Lu-Lu Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Xiao-Feng Chen
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Pan Hu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Shi-Ying Lu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Bao-Quan Fu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Yan-Song Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Fei-Fei Zhai
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Dan-Di Ju
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Shi-Jun Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Yi-Ming Shui
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Jiang Chang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Xiao-Long Ma
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China.,Shaheyan Animal Husbandry and Veterinary Medicine Station of Dunhua City, Dunhua, 133700, China
| | - Bing Su
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Yu Zhou
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Zeng-Shan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China
| | - Hong-Lin Ren
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis / College of Veterinary Medicine, Jilin University, Xi An Da Lu 5333, Changchun, 130062, China.
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Construction and Activity Analyses of Single Functional Mouse Peroxiredoxin 6 (Prdx6). J Vet Res 2019; 63:99-105. [PMID: 30989141 PMCID: PMC6458554 DOI: 10.2478/jvetres-2019-0004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 01/14/2019] [Indexed: 01/13/2023] Open
Abstract
Introduction Peroxiredoxin 6 (Prdx6) is a bifunctional protein with glutathione peroxidase activity and phospholipase A2 activity. Previous studies have shown a significant positive correlation between the intracellular survival ability of Brucella and Prdx6. Here, the Prdx6 enzyme with a single activity was constructed to facilitate study of the relationship between the single function of Prdx6 and Brucella infection. Material and Methods The target open reading frame (ORF) DNAs of Prdx6 with a single active centre were prepared using gene splicing by overlap extension PCR (SOE-PCR), and the recombinant eukaryotic expression plasmids inserted by Prdx6 with the single activity centre were constructed and transfected into murine Raw264.7 macrophages. The glutathione peroxidase activity and phospholipase A2 activity of the constructed Prdx6 were examined. Results The core centres (Ser32 and Cys47) of Prdx6 were successfully mutated by changing the 94th nucleotide from T to G and the 140th nucleotide from G to C in the two enzyme activity cores, respectively. The constructed recombinant plasmids of Prdx6 with the single active centre were transfected into murine macrophages showing the expected single functional enzyme activity, which MJ33 or mercaptosuccinate inhibitors were able to inhibit. Conclusion The constructed mutants of Prdx6 with the single activity cores will be a benefit to further study of the biological function of Prdx6 with different enzyme activity.
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Xia X, Yu R, Li M, Liu L, Zhang K, Wang Y, Li B, Zhang L, Song G, Zheng X, Bai X. Molecular cloning and characterization of two genes encoding peroxiredoxins from freshwater bivalve Anodonta woodiana: Antioxidative effect and immune defense. FISH & SHELLFISH IMMUNOLOGY 2018; 82:476-491. [PMID: 30165152 DOI: 10.1016/j.fsi.2018.08.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/21/2018] [Accepted: 08/23/2018] [Indexed: 05/15/2023]
Abstract
Members of Prx family function as an important players in host defense against oxidative stress, and modulate immune responses. In the current study, two complete Prx sequences were isolated from bivalve Anodonta woodiana and respectively named AwPrx4a and AwPrx4b. Regulative characterizations of AwPrx4a and AwPrx4b derived from perfluorooctanesulfonate (PFOS), perfluoroocanoic acid (PFOA), lipopolysaccharide (LPS) and polyinosinic:polycytidylic (Poly I:C) challenge in hepatopancreas, gill and hemocytes were measured by quantitative real-time PCR, respectively. The full-length cDNA of AwPrx4a had an open reading frame ORF of 588 bp encoding 196 amino acids. Two highly conserved Prxs signature motifs were observed in deduced amino acid sequence, one was FYPLDFTFACPTEI, and the other was GEVCPA. Complete cDNA sequence of AwPrx4b was comprised of a 5' untranslated region (UTR) of 120 nucleotides, a 426 bp ORF which was encoded 142 amino acids, and a long 3'-UTR of 412 nucleotides. Expressions of AwPrx4a and AwPrx4b showed a significant up-regulation pattern in groups at lower concentration treatment of PFOS and PFOA, a biphasic profile in groups with a higher concentration treatment. Compared with that of control group, expressions of AwPrx4a and AwPrx4b were significantly induced by LPS and Poly I:C treatment in the hepatopancreas, gill and hemocytes. These results indicate up-regulations of AwPrx4a and AwPrx4b expression are associated with eliminating oxidative stress derived from PFOS and PFOA administration as well as enhancing immune defense against LPS and Poly I:C challenge.
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Affiliation(s)
- Xichao Xia
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China; State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Centre for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Ruixue Yu
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Mengbo Li
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Li Liu
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Ke Zhang
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Yu Wang
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Bingjie Li
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Linguo Zhang
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Guoying Song
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Xinhua Zheng
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
| | - Xianguang Bai
- Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province, China
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Shui YM, Lu SY, Guo X, Liu XL, Fu BQ, Hu P, Qu LL, Liu NN, Li YS, Wang LL, Zhai FF, Ju DD, Liu ZS, Zhou Y, Ren HL. Molecular characterization and differential expression analysis of interleukin 1β from Ovis aries. Microb Pathog 2018; 116:180-188. [DOI: 10.1016/j.micpath.2018.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/28/2017] [Accepted: 01/07/2018] [Indexed: 11/30/2022]
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10
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Bu R, Wang P, Zhao C, Bao W, Qiu L. Gene characteristics, immune and stress responses of PmPrx1 in black tiger shrimp (Penaeus monodon): Insights from exposure to pathogenic bacteria and toxic environmental stressors. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 77:1-16. [PMID: 28689775 DOI: 10.1016/j.dci.2017.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/03/2017] [Accepted: 07/05/2017] [Indexed: 06/07/2023]
Abstract
Peroxiredoxins (Prxs) are ubiquitous, multifunctional and evolutionarily conserved enzymes that can protect cells from oxidative damage caused by ROS and play a vital role in immune responses. Here, a full-length Prx1 cDNA sequence (PmPrx1) was isolated from Penaeus monodon. The PmPrx1 cDNA was 951 base pairs (bp), encoding 198 amino acid polypeptides. The results of qRT-PCR showed that the PmPrx1 mRNA was ubiquitously expressed in all tissues tested and had a comparatively high expression level in immune-associated tissues (gill, hepatopancreas). To explore the immune and anti-stress roles of PmPrx1, the gills and hepatopancreas were chosen as target tissues in Penaeus monodon and were challenged with bacteria (Vibrio harveyi and Streptococcus agalactiae) and toxic environmental stresses. To further clarify the immune function of PmPrx1 after bacterial challenge, the recombinant PmPrx1 protein was acquired using a prokaryotic expression method. The antioxidant activity of the recombinant PmPrx1 was assessed by the catalyzing hydrogen peroxide assay method, and the results showed obvious antioxidant activity in a dose-dependent and temperature-dependent manner. The antimicrobial activity of purified PmPrx1 protein was evaluated and further studied in vitro relying on a bacterial growth inhibition test which was conducted in both liquid and solid cultures. Furthermore, E. coli transferred with pRSET-PmPrx1 was dramatically protected in response to metal toxicity and H2O2 oxidative stress. In summary, this study provides useful information about the role of the Prx1 gene in defense against a variety of toxic factors in shrimps that help to further clarify the functional mechanism of Prx.
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Affiliation(s)
- Ruiqian Bu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China
| | - Pengfei Wang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China
| | - Chao Zhao
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China
| | | | - Lihua Qiu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China; Key Laboratory of Aquatic Genomics, Ministry of Agriculture, PR China.
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11
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Godahewa GI, Perera NCN, Elvitigala DAS, Jayasooriya RGPT, Kim GY, Lee J. Characterization of a 1-cysteine peroxiredoxin from big-belly seahorse (Hippocampus abdominalis); insights into host antioxidant defense, molecular profiling and its expressional response to septic conditions. FISH & SHELLFISH IMMUNOLOGY 2016; 57:186-197. [PMID: 27542613 DOI: 10.1016/j.fsi.2016.08.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 08/06/2016] [Accepted: 08/13/2016] [Indexed: 06/06/2023]
Abstract
1-cysteine peroxiredoxin (Prx6) is an antioxidant enzyme that protects cells by detoxifying multiple peroxide species. This study aimed to describe molecular features, functional assessments and potential immune responses of Prx6 identified from the big-belly seahorse, Hippocampus abdominalis (HaPrx6). The complete ORF (666 bp) of HaPrx6 encodes a polypeptide (24 kDa) of 222 amino acids, and harbors a prominent peroxiredoxin super-family domain, a peroxidatic catalytic center, and a peroxidatic cysteine. The deduced amino acid sequence of HaPrx6 shares a relatively high amino acid sequence similarity and close evolutionary relationship with Oplegnathus fasciatus Prx6. The purified recombinant HaPrx6 protein (rHaPrx6) was shown to protect plasmid DNA in the Metal Catalyzed Oxidation (MCO) assay and, together with 1,4-Dithiothreitol (DTT), protected human leukemia THP-1 cells from extracellular H2O2-mediated cell death. In addition, quantitative real-time PCR revealed that HaPrx6 mRNA was constitutively expressed in 14 different tissues, with the highest expression observed in liver tissue. Inductive transcriptional responses were observed in liver and kidney tissues of fish after treating them with bacterial stimuli, including LPS, Edwardsiella tarda, and Streptococcus iniae. These results suggest that HaPrx6 may play an important role in the immune response of the big-belly seahorse against microbial infection. Collectively, these findings provide structural and functional insights into HaPrx6.
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Affiliation(s)
- G I Godahewa
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - N C N Perera
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Don Anushka Sandaruwan Elvitigala
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Department of Zoology, University of Sri Jayewardenepura, Gangodawila, Nugegoda, 10250, Sri Lanka
| | - R G P T Jayasooriya
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea.
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12
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Liu NN, Liu ZS, Lu SY, Hu P, Zhang Y, Fu BQ, Li YS, Zhou Y, Zhang Y, Ren HL. Isolation and characterisation of peroxiredoxin 6 promoter from sheep (Ovis aries). J Vet Res 2016. [DOI: 10.1515/jvetres-2016-0048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Abstract
Introduction: Peroxiredoxin 6 (Prdx6) is a bifunctional protein and a unique 1-Cys Prdx of the peroxiredoxin family. The expression and regulation of Prdx6 are implicated in numerous physiological and pathological processes.
Material and Methods: Eight stepwise truncated DNA fragments obtained from the 5′-flank region of the Prdx6 gene were prepared and subcloned into the pSEAP2-Enhancer vectors. To investigate the transcriptional activity of the truncated DNA fragments, the recombinant plasmids were transfected into the COS-1 cells and the transcriptional activity was measured via assaying the expression of the reporter gene of the secreted alkaline phosphatase.
Results: A 3.4 kb 5′-upstream flank region of the Prdx6 gene was cloned and sequenced. The region from −108 nt to −36 nt of the 5′-flanking region of the Prdx6 gene contained basal transcriptional activity.
Conclusion: This result provides the basis for further studies on the gene regulation of the Prdx6-mediated biological processes and on screening for the transacting factors that interact with cis-acting elements of the Prdx6 gene promoter.
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Affiliation(s)
- Nan-Nan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
| | - Zeng-Shan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
| | - Shi-Ying Lu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
| | - Pan Hu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
| | - Ying Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
| | - Bao-Quan Fu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Yan-Song Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
| | - Yu Zhou
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
| | - Yu Zhang
- Fifth Department of Orthopaedics, First Central Hospital of Baoding, Baoding 071000, China
| | - Hong-Lin Ren
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis/College of Veterinary Medicine, College of Animal Sciences, Jilin University, Xi An Da Lu 5333, Changchun 130062, China
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13
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Full-Length cDNA Cloning, Molecular Characterization and Differential Expression Analysis of Lysophospholipase I from Ovis aries. Int J Mol Sci 2016; 17:ijms17081206. [PMID: 27483239 PMCID: PMC5000604 DOI: 10.3390/ijms17081206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/15/2016] [Accepted: 07/19/2016] [Indexed: 01/23/2023] Open
Abstract
Lysophospholipase I (LYPLA1) is an important protein with multiple functions. In this study, the full-length cDNA of the LYPLA1 gene from Ovis aries (OaLypla1) was cloned using primers and rapid amplification of cDNA ends (RACE) technology. The full-length OaLypla1 was 2457 bp with a 5′-untranslated region (UTR) of 24 bp, a 3′-UTR of 1740 bp with a poly (A) tail, and an open reading frame (ORF) of 693 bp encoding a protein of 230 amino acid residues with a predicted molecular weight of 24,625.78 Da. Phylogenetic analysis showed that the OaLypla1 protein shared a high amino acid identity with LYPLA1 of Bos taurus. The recombinant OaLypla1 protein was expressed and purified, and its phospholipase activity was identified. Monoclonal antibodies (mAb) against OaLypla1 that bound native OaLypla1 were generated. Real-time PCR analysis revealed that OaLypla1 was constitutively expressed in the liver, spleen, lung, kidney, and white blood cells of sheep, with the highest level in the kidney. Additionally, the mRNA levels of OaLypla1 in the buffy coats of sheep challenged with virulent or avirulent Brucella strains were down-regulated compared to untreated sheep. The results suggest that OaLypla1 may have an important physiological role in the host response to bacteria. The function of OaLypla1 in the host response to bacterial infection requires further study in the future.
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14
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Priyathilaka TT, Kim Y, Udayantha HMV, Lee S, Herath HMLPB, Lakmal HHC, Elvitigala DAS, Umasuthan N, Godahewa GI, Kang SI, Jeong HB, Kim SK, Kim DJ, Lim BS. Identification and molecular characterization of peroxiredoxin 6 from Japanese eel (Anguilla japonica) revealing its potent antioxidant properties and putative immune relevancy. FISH & SHELLFISH IMMUNOLOGY 2016; 51:291-302. [PMID: 26911410 DOI: 10.1016/j.fsi.2015.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 12/03/2015] [Accepted: 12/11/2015] [Indexed: 06/05/2023]
Abstract
Peroxiredoxins (Prdx) are thiol specific antioxidant enzymes that play a pivotal role in cellular oxidative stress by reducing toxic peroxide compounds into nontoxic products. In this study, we identified and characterized a peroxiredoxin 6 counterpart from Japanese eel (Anguilla japonica) (AjPrdx6) at molecular, transcriptional and protein level. The identified full-length coding sequence of AjPrdx6 (669 bp) coded for a polypeptide of 223 aa residues (24.9 kDa). Deduced protein of AjPrdx6 showed analogy to characteristic structural features of 1-cysteine peroxiredoxin sub-family. According to the topology of the generated phylogenetic reconstruction AjPrdx6 showed closest evolutionary relationship with Salmo salar. As detected by Quantitative real time PCR (qPCR), AjPrdx6 mRNA was constitutively expressed in all the tissues examined. Upon the immune challenges with Edwardsiella tarda, lipopolysaccharides and polyinosinic:polycytidylic acid, expression of AjPrdx6 mRNA transcripts were significantly induced. The general functional properties of Prdx6 were confirmed using purified recombinant AjPrdx6 protein by deciphering its potent protective effects on cultured vero cells (kidney epithelial cell from an African green monkey) against H2O2-induced oxidative stress and protection against oxidative DNA damage elicited by mixed function oxidative (MFO) system. Altogether, our findings suggest that AjPrdx6 is a potent antioxidant protein in Japanese eels and its putative immune relevancy in pathogen stress mounted by live-bacteria or pathogen associated molecular patterns (PAMPs).
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Affiliation(s)
- Thanthrige Thiunuwan Priyathilaka
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - Yucheol Kim
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - H M V Udayantha
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - Seongdo Lee
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - H M L P B Herath
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - H H Chaminda Lakmal
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea
| | - Don Anushka Sandaruwan Elvitigala
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - Navaneethaiyer Umasuthan
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - G I Godahewa
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - Seong Il Kang
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - Hyung Bok Jeong
- Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea
| | - Shin Kwon Kim
- New Strategy Research Center, National Fisheries Research and Development Institute, Busan 619-705, Republic of Korea
| | - Dae Jung Kim
- New Strategy Research Center, National Fisheries Research and Development Institute, Busan 619-705, Republic of Korea.
| | - Bong Soo Lim
- Fish Vaccine Research Center, Jeju National University, Jeju Special Self-Governing Province 695-965, Republic of Korea.
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15
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Characterization of surface antigen protein 1 (SurA1) from Acinetobacter baumannii and its role in virulence and fitness. Vet Microbiol 2016; 186:126-38. [PMID: 27016767 DOI: 10.1016/j.vetmic.2016.02.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 01/24/2016] [Accepted: 02/22/2016] [Indexed: 01/02/2023]
Abstract
Acinetobacter baumannii is a Gram-negative bacillus that causes nosocomial infections, such as bacteremia, pneumonia, and meningitis and urinary tract and wound infections. In the present study, the surface antigen protein 1 (SurA1) gene of A. baumannii strain CCGGD201101 was identified, cloned and expressed, and then its roles in fitness and virulence were investigated. Virulence was observed in the human lung cancer cell lines A549 and HEp-2 at one week after treatment with recombinant SurA1. One isogenic SurA1 knock-out strain, GR0015, which was derived from the A. baumannii strain CCGGD201101 isolated from diseased chicks in a previous study, highlighted the effect of SurA1 on fitness and growth. Its growth rate in LB broth and killing activity in human sera were significantly decreased compared with strain CCGGD201101. In the Galleria mellonella insect model, the isogenic SurA1 knock-out strain exhibited a lower survival rate and decreased dissemination. These results suggest that SurA1 plays an important role in the fitness and virulence of A. baumannii.
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16
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Gordeeva AE, Temnov AA, Charnagalov AA, Sharapov MG, Fesenko EE, Novoselov VI. Protective Effect of Peroxiredoxin 6 in Ischemia/Reperfusion-Induced Damage of Small Intestine. Dig Dis Sci 2015; 60:3610-9. [PMID: 26233545 DOI: 10.1007/s10620-015-3809-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 07/13/2015] [Indexed: 12/09/2022]
Abstract
BACKGROUND Strong oxidative stress starting in the epithelium upon restoration of blood cell circulation is a major cause of necrosis of the intestinal epithelium in ischemia/reperfusion-induced damage. AIM The purpose of this study was to investigate the tissue-protective effect of exogenous peroxiredoxin 6 (Prx6) in ischemia/reperfusion-induced damage of small intestine. METHODS The research was carried out using a model of acute superior mesenteric artery occlusion in Wistar male rats. Exogenous Prx6 was administrated intravenously 15 min prior to small intestine ischemia. The distribution of endogenous Prx6 in the small intestine was determined by immunohistochemical analysis. The expression level of antioxidant enzymes was evaluated by RT-PCR in real time. RESULTS Exogenous Prx6 injected to animals intravenously was detected in blood vessel lumens, and its diffuse distribution was subsequently confirmed in the intestinal epithelium. Expression analysis of genes coding for major antioxidant enzymes demonstrated a significant activation of SOD 1, SOD 3, Prx6, GPx2, GPx7 expression during I/R-induced damage of the small intestine. Injection of exogenous Prx6 prior to induced ischemia resulted in minimization of oxidative injury by reducing necrosis and apoptosis, by normalization of gene activity of antioxidant enzyme. It eventually led to a reduction of epithelium destruction in the small intestine. By contrast, administration of a purified mutant form of Prx6 (Prx6C47S) without peroxidase activity had no protective effect. CONCLUSION The application of exogenous Prx6 enables normalization of the antioxidant status of the small intestine and reduction of cell destruction upon I/R-induced organ damage.
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Affiliation(s)
- A E Gordeeva
- Institute of Cell Biophysics, Russian Academy of Sciences, 3, Institutskaya, Pushchino, Moscow Region, Russia, 142290.
| | - A A Temnov
- N.V. Sklifosovsky Research Institute for Emergency Medicine of Moscow Healthcare Department, Moscow, Russia.
| | - A A Charnagalov
- Department of Structural and Computational Biology, Max. F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter 5, 1030, Vienna, Austria.
| | - M G Sharapov
- Institute of Cell Biophysics, Russian Academy of Sciences, 3, Institutskaya, Pushchino, Moscow Region, Russia, 142290.
| | - E E Fesenko
- Institute of Cell Biophysics, Russian Academy of Sciences, 3, Institutskaya, Pushchino, Moscow Region, Russia, 142290.
| | - V I Novoselov
- Institute of Cell Biophysics, Russian Academy of Sciences, 3, Institutskaya, Pushchino, Moscow Region, Russia, 142290.
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17
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Tolomeo AM, Carraro A, Bakiu R, Toppo S, Place SP, Ferro D, Santovito G. Peroxiredoxin 6 from the Antarctic emerald rockcod: molecular characterization of its response to warming. J Comp Physiol B 2015; 186:59-71. [PMID: 26433650 DOI: 10.1007/s00360-015-0935-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/09/2015] [Accepted: 09/22/2015] [Indexed: 12/22/2022]
Abstract
In the present study, we describe the purification and molecular characterization of two peroxiredoxins (Prdxs), referred to as Prdx6A and Prdx6B, from Trematomus bernacchii, a teleost widely distributed in many areas of Antarctica, that plays a pivotal role in the Antarctic food chain. The two putative amino acid sequences were compared with Prdx6 orthologs from other fish, highlighting a high percentage of identity and similarity with the respective variant, in particular for the residues that are essential for the characteristic peroxidase and phospholipase activities of these enzymes. Phylogenetic analyses suggest the appearance of the two prdx6 genes through a duplication event before the speciation that led to the differentiation of fish families and that the evolution of the two gene variants seems to proceed together with the evolution of fish orders and families. The temporal expression of Prdx6 mRNA in response to short-term thermal stress showed a general upregulation of prdx6b and inhibition of prdx6a, suggesting that the latter is the variant most affected by temperature increase. The variations of mRNA accumulation are more conspicuous in heart than the liver, probably related to behavioral changes of the specimens in response to elevated temperature. These data, together with the peculiar differences between the molecular structures of the two Prdx6s in T. bernacchii as well as in the tropical species Stegastes partitus, suggest an adaptation that allowed these poikilothermic aquatic vertebrates to colonize very different environments, characterized by different temperature ranges.
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Affiliation(s)
- A M Tolomeo
- Department of Biology, University of Padova, via U. Bassi 58/B, 35100, Padua, Italy
| | - A Carraro
- Department of Biology, University of Padova, via U. Bassi 58/B, 35100, Padua, Italy
| | - R Bakiu
- Department of Aquaculture and Fisheries, Agricultural University of Tirana, Tirana, Albania
| | - S Toppo
- Department of Molecular Medicine, University of Padova, Padua, Italy
| | - S P Place
- Department of Biology, Sonoma State University, Rohnert Park, CA, USA
| | - D Ferro
- Institute for Evolution and Biodiversity, Westfälische Wilhelms-Universität, Münster, Germany
| | - G Santovito
- Department of Biology, University of Padova, via U. Bassi 58/B, 35100, Padua, Italy.
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