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Qi X, Meng J, Li C, Cheng W, Fan A, Huang J, Lin W. Praelolide alleviates collagen-induced arthritis through increasing catalase activity and activating Nrf2 pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 135:156040. [PMID: 39299092 DOI: 10.1016/j.phymed.2024.156040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 08/13/2024] [Accepted: 09/10/2024] [Indexed: 09/22/2024]
Abstract
BACKGROUND Marine diterpenes represent a promising reservoir for identifying potential anti-rheumatoid arthritis (RA) candidates. Praelolide is a gorgonian-derived briarane-type diterpenoid with antioxidative and anti-osteoclastogenetic properties. OBJECTIVE This study aims to evaluate the therapeutic efficacy of praelolide against RA and investigate its underlying mechanisms both in vivo and in vitro. METHOD Collagen-induced arthritis (CIA) mice and human RA fibroblast-like synoviocyte MH7A cells were employed for bioassays. The VisuGait system was utilized to assess gait dysfunction resulting from joint pain. Histopathological changes in ankle and synovial tissues were evaluated using micro-computed tomography, hematoxylin and eosin staining, Safranin-O/Fast Green staining, tartrate resistant acid phosphatase staining, and immunohistochemistry. Fluorescence spectroscopy, circular dichroism, and surface plasmon resonance were employed to investigate interactions between praelolide and catalase. The production of inflammatory cytokines and expression levels of proteins were assessed using ELISA and Western blotting, respectively. RESULT Praelolide significantly reduced paw swelling and arthritis scores, improved gait deficits, and restored synovial histopathological alterations and bone erosion in CIA mice. In vivo and in vitro, praelolide effectively decreased the expression and production of inflammatory cytokines such as interleukin (IL)-1β and IL-6. Additionally, praelolide inhibited osteoclastogenesis on bone surface of the ankle joints and in a tumor necrosis factor-α (TNF-α)-induced MH7A/bone marrow-derived macrophages (BMMs) co-culture system, and it strongly suppressed reactive oxygen species (ROS) production. Mechanistically, praelolide modulated catalase through non-covalent interactions, inducing conformational alterations that enhanced catalase activity and stability against time- and temperature-induced degradation. Further investigation revealed that praelolide significantly upregulated the expression of Nrf2, subsequently activating downstream antioxidant enzymes. CONCLUSION Praelolide markedly alleviated synovial inflammation and bone destruction in CIA mice by enhancing catalase activity and activating the Nrf2 pathway to reduce disease-related ROS accumulation, highlighting praelolide as a promising candidate for multitarget treatment of RA.
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Affiliation(s)
- Xinyi Qi
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, PR China
| | - Junjun Meng
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, PR China
| | - Changhong Li
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, PR China
| | - Wei Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, PR China
| | - Aili Fan
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, PR China
| | - Jian Huang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, PR China.
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, PR China; Institute of Ocean Research, Ningbo Institute of Marine Medicine, Peking University, Beijing, 100191, PR China.
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He F, Wan J, Huo C, Li X, Cui Z, Li Y, Liu R, Zong W. New strategies for evaluating imidacloprid-induced biological consequences targeted to Eisenia fetida species and the corresponding mechanisms of its toxicity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119456. [PMID: 37897899 DOI: 10.1016/j.jenvman.2023.119456] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/04/2023] [Accepted: 10/21/2023] [Indexed: 10/30/2023]
Abstract
Imidacloprid (IMI), a neonicotinoid insecticide, has a wide variety of applications in both agriculture and horticulture. As a result of it massive and repeated use, its traces remained in soil pose severe damage to soil invertebrates, particularly earthworms. Limited information is available regarding the underlying mechanisms of IMI toxicity toward earthworms at the molecular, transcriptional, and cellular levels. Here, Eisenia fetida coelomocytes and key defensive proteins were selected as targeted receptors to explore the toxic mechanisms of oxidative stress-mediated cytotoxicity, genotoxicity, and antioxidant responses induced by IMI stress and the molecular mechanisms underlying the binding of IMI and superoxide dismutase (SOD)/catalase (CAT). Results showed that IMI exposure destroyed the cell membrane integrity of earthworm cells, causing cell damage and cytotoxicity. The intracellular levels of ROS, including ·O2- and H2O2 were induced by IMI exposure, thereby triggering oxidative stress and damage. Moreover, IMI exposure attenuated the antioxidative stress responses (reduced antioxidant capacity and CAT/SOD activities) and caused deleterious effects (enhanced DNA damage, lipid peroxidation (LPO), and protein carbonylation (PCO)) through ROS-mediated oxidative stress pathway. Aberrant gene expression associated with oxidative stress and defense regulation, including CAT, CRT, MT, SOD, GST, and Hsp70 were induced after IMI exposure. Concentration-dependent conformational and structural alterations of CAT/SOD were observed when IMI binding. Also, direct binding of IMI resulted in significant inhibition of CAT/SOD activities in vitro. Molecular simulation showed that IMI preferred to bind to CAT active center through its direct binding with the key residue Tyr 357, while IMI bound more easily to the connecting cavity of two subunits away from SOD active center. In addition, hydrogen bonds and hydrophobic force are the main driving force of IMI binding with CAT/SOD. These findings have implications for comprehensive evaluation of IMI toxicity to soil eco-safety and offer novel strategies to elucidate the toxic mechanisms and pathways of IMI stress.
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Affiliation(s)
- Falin He
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Jingqiang Wan
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Chengqian Huo
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Xiangxiang Li
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Zhihan Cui
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Yuze Li
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China.
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, Shandong, 250014, PR China
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Samal RR, Sundaray K, Tulsiyan KD, Saha S, Chainy GBN, Subudhi U. Compromised conformation and kinetics of catalase in the presence of propylthiouracil: A biophysical study and alleviation by curcumin. Int J Biol Macromol 2023; 226:1547-1559. [PMID: 36455824 DOI: 10.1016/j.ijbiomac.2022.11.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022]
Abstract
In the present study, the inhibitory effect of propylthiouracil (PTU) on bovine liver catalase (BLC) activity was studied in the presence of curcumin (CUR). The results suggest that the PTU-induced decrease in BLC activity was caused by a change in conformation of BLC with reduced α-helical content and decrease in zeta potential. Nevertheless, temperature-dependent activation of CUR protects the activity of BLC by restoring the secondary conformation and zeta potential of BLC. CUR inhibited the time-induced reduction in BLC activity and the protection was increased with increasing concentrations of CUR and found to be significant even from 1:0.1 molar ratios. The enzyme kinetics confirmed the high catalytic efficiency of BLC in presence of CUR than PTU. The protective role of CUR was due to the formation of a more stabilized complex as demonstrated by molecular docking, and fourier-transform infrared study. Isothermal titration calorimetric study supports for a favourable reaction between BLC and PTU or CUR due to the negative ΔH, and positive TΔS. Although the number of binding sites for PTU and CUR was found to be 10 and 7, respectively, the binding affinity between CUR and BLC is approximately 3.72 fold stronger than BLC-PTU complex. The increased melting temperature of BLC was noticed in presence of CUR suggesting the protective potential of CUR towards biomolecules. Indeed, this is the first biophysical study to describe the molecular mechanism of PTU-induced reduction in BLC activity and alleviation by CUR with detail kinetics. Thus, CUR can be further extended to other antioxidant enzymes or compromised biomolecules for therapeutic interventions.
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Affiliation(s)
- Rashmi R Samal
- Biochemistry & Biophysics Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Kajal Sundaray
- Biochemistry & Biophysics Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Kiran D Tulsiyan
- School of Chemical Sciences, National Institute of Science Education & Research, Bhubaneswar 752050, Odisha, India; Homi Bhaba National Institute, Mumbai 400094, India
| | - Sumit Saha
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India; Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India
| | - Gagan B N Chainy
- Department of Biotechnology, Utkal University, Bhubaneswar 751004, Odisha, India
| | - Umakanta Subudhi
- Biochemistry & Biophysics Laboratory, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar 751013, Odisha, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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Li S, Zhang P, Xu F, Hu S, Liu J, Tan Y, Tu Z, Sun H, Zhang ZM, He QY, Sun P, Ding K, Li Z. Ynamide Electrophile for the Profiling of Ligandable Carboxyl Residues in Live Cells and the Development of New Covalent Inhibitors. J Med Chem 2022; 65:10408-10418. [PMID: 35880853 DOI: 10.1021/acs.jmedchem.2c00272] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Covalent inhibitors with an electrophilic warhead have received considerable attention due to their remarkable pharmacological properties. However, the electrophilic warhead in covalent drugs is often an α, β-unsaturated amide, and the targets are mainly cysteine or lysine residues. Thus, the development of novel electrophiles that can target other amino acids is highly desirable. Ynamide, a useful and versatile building block, is commonly employed in the construction of various compounds in organic synthesis. The performance of this functional group in a proteome-wide environment has been studied here for the first time, and it has been shown that it can efficiently modify carboxyl residues in situ and in vitro. Upon incorporation of this ynamide warhead into the pharmacophores of kinase inhibitors, the resulting compound showed moderate inhibition against the EGFR L858R mutant but not against EGFR WT. This novel electrophilic group can be used in the development of new types of covalent inhibitors.
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Affiliation(s)
- Shengrong Li
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Pengwei Zhang
- Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, Guangdong, China.,Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China
| | - Fang Xu
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Shengcao Hu
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Jiacong Liu
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Yi Tan
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Zhengchao Tu
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Hongyan Sun
- Department of Chemistry, City University of Hong Kong, Hong Kong 999077, China
| | - Zhi-Min Zhang
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Qing-Yu He
- Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, Guangdong, China.,MOE Key Laboratory of Tumor Molecular Biology, Jinan University, Guangzhou 510120, China
| | - Pinghua Sun
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Ke Ding
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632
| | - Zhengqiu Li
- School of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, China 510632.,MOE Key Laboratory of Tumor Molecular Biology, Jinan University, Guangzhou 510120, China
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Tang Y, Ying Y, Zou C, Yan H, Wang Y, Li H, Li X, Xu Z, Lv J, Ge RS. Leydig cell function in adult male rats is disrupted by perfluorotetradecanoic acid through increasing oxidative stress and apoptosis. ENVIRONMENTAL TOXICOLOGY 2022; 37:1790-1802. [PMID: 35385208 DOI: 10.1002/tox.23526] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 02/26/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Perfluorotetradecanoic acid (PFTeDA) is a long-chain perfluoroalkyl compound with increased applications. Its effect on Leydig cell function and its underlying mechanism remain unclear. Male Sprague-Dawley rats (60 days old) were gavaged with PFTeDA at doses of 0, 1, 5, and 10 mg/kg/day from 60 to 87 days after birth. PFTeDA significantly reduced serum testosterone levels at 1 mg/kg and higher doses, while markedly increasing serum luteinizing hormone level at 10 mg/kg and follicle-stimulating hormone at ≥1 mg/kg. PFTeDA significantly reduced the sperm number at the cauda of epididymis at ≥1 mg/kg. PFTeDA also reduced the number of CYP11A1-positive Leydig cells due to increased apoptosis shown by the terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay. PFTeDA significantly repressed the expression of Cyp17a1 and Star and their proteins at 1-10 mg/kg, while it increased the expression of Srd5a1 and its protein (an immature Leydig cell biomarker) at 10 mg/kg. PFTeDA markedly increased testicular malondialdehyde level, while inhibiting antioxidants (SOD1, SOD2, and CAT), triggering oxidative stress, thereby further inducing BAX and CASP3 while inhibiting BCL2, which led to cell apoptosis. PFTeDA also reduced DHH level secreted by Sertoli cells, which indirectly affected Leydig cell function. PFTeDA inhibited testosterone secretion in primary Leydig cells in vitro by increasing reactive oxygen species and inducing apoptosis at 50 μM. In conclusion, PFTeDA inhibits the function of Leydig cells by inducing oxidative stress and subsequently stimulating cell apoptosis.
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Affiliation(s)
- Yunbing Tang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yingfen Ying
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Cheng Zou
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Haoni Yan
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yiyan Wang
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Huitao Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaoheng Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhangye Xu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jieqiang Lv
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ren-Shan Ge
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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Tian F, Li Q, Shi L, Li J, Shi M, Zhu Y, Li H, Ge RS. In utero bisphenol AF exposure causes fetal Leydig cell dysfunction and induces multinucleated gonocytes by generating oxidative stress and reducing the SIRT1/PGC1α signals. Toxicol Appl Pharmacol 2022; 447:116069. [PMID: 35605789 DOI: 10.1016/j.taap.2022.116069] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 04/20/2022] [Accepted: 05/13/2022] [Indexed: 12/01/2022]
Abstract
Bisphenol AF (BPAF) is one of the primary alternatives of bisphenol A. It has been ubiquitously detected in the environment and is an emerging endocrine disrupting compound. However, the effects of BPAF exposure on fetal Leydig cells and germ cells and the underlying mechanisms remain largely unknown. To this end, pregnant Sprague-Dawley rats were exposed to 10, 50, and 200 mg/kg/d BPAF by gavage from gestational days 14 to 21. The neonatal rats were sacrificed on day 1 at birth. The results showed that serum testosterone levels were significantly decreased at 50 and 200 mg/kg/d, the expression of Scarb1, Star, Cyp17a1, Hsd17b3, and Dhh and their proteins were markedly down-regulated at 50 and 100 mg/kg/d. BPAF exposure also significantly increased the incidence of multinucleated gonocytes at 200 mg/kg/d. We further detected significant increase of testicular malondialdehyde levels and reduction of antioxidants, including SOD1, SOD2, and CAT at 50 and/or 200 mg/kg/d. Furthermore, BPAF markedly reduced the levels of SIRT1 and PGC1α at 200 mg/kg/d while significantly increased AMPK phosphorylation in the testes at 50 and 200 mg/kg/d. In conclusion, our results provide novel in vivo data that BPAF can induce fetal Leydig cell dysfunction by interfering with steroidogenic networks and induce the formation of multinucleated gonocytes after suppressing the antioxidant defense system and reducing SIRT1 and PGC1α signals and increasing the phosphorylation of AMPK, which highlights the potential health risk of environmental exposure to BPAF in inducing male reproductive tract malformation.
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Affiliation(s)
- Fuhong Tian
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's, Hospital, Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China; Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China
| | - Qiyao Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China
| | - Lei Shi
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China
| | - Jingjing Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's, Hospital, Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China
| | - Mengna Shi
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's, Hospital, Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China
| | - Yang Zhu
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's, Hospital, Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China
| | - Huitao Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's, Hospital, Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China
| | - Ren-Shan Ge
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's, Hospital, Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China; Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan West Road, Wenzhou, Zhejiang 325027, China.
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Chmelová Ľ, Bianchi C, Albanaz ATS, Režnarová J, Wheeler R, Kostygov AY, Kraeva N, Yurchenko V. Comparative Analysis of Three Trypanosomatid Catalases of Different Origin. Antioxidants (Basel) 2021; 11:46. [PMID: 35052550 PMCID: PMC8773446 DOI: 10.3390/antiox11010046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/16/2021] [Accepted: 12/23/2021] [Indexed: 11/16/2022] Open
Abstract
Most trypanosomatid flagellates do not have catalase. In the evolution of this group, the gene encoding catalase has been independently acquired at least three times from three different bacterial groups. Here, we demonstrate that the catalase of Vickermania was obtained by horizontal gene transfer from Gammaproteobacteria, extending the list of known bacterial sources of this gene. Comparative biochemical analyses revealed that the enzymes of V. ingenoplastis, Leptomonas pyrrhocoris, and Blastocrithidia sp., representing the three independent catalase-bearing trypanosomatid lineages, have similar properties, except for the unique cyanide resistance in the catalase of the latter species.
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Affiliation(s)
- Ľubomíra Chmelová
- Life Science Research Centre, Faculty of Science, University of Ostrava, 71000 Ostrava, Czech Republic; (Ľ.C.); (C.B.); (A.T.S.A.); (J.R.); (A.Y.K.); (N.K.)
| | - Claretta Bianchi
- Life Science Research Centre, Faculty of Science, University of Ostrava, 71000 Ostrava, Czech Republic; (Ľ.C.); (C.B.); (A.T.S.A.); (J.R.); (A.Y.K.); (N.K.)
| | - Amanda T. S. Albanaz
- Life Science Research Centre, Faculty of Science, University of Ostrava, 71000 Ostrava, Czech Republic; (Ľ.C.); (C.B.); (A.T.S.A.); (J.R.); (A.Y.K.); (N.K.)
| | - Jana Režnarová
- Life Science Research Centre, Faculty of Science, University of Ostrava, 71000 Ostrava, Czech Republic; (Ľ.C.); (C.B.); (A.T.S.A.); (J.R.); (A.Y.K.); (N.K.)
| | - Richard Wheeler
- Nuffield Department of Medicine, University of Oxford, Old Road Campus, Headington, Oxford OX3 7BN, UK;
| | - Alexei Yu. Kostygov
- Life Science Research Centre, Faculty of Science, University of Ostrava, 71000 Ostrava, Czech Republic; (Ľ.C.); (C.B.); (A.T.S.A.); (J.R.); (A.Y.K.); (N.K.)
- Zoological Institute of the Russian Academy of Sciences, 199034 St. Petersburg, Russia
| | - Natalya Kraeva
- Life Science Research Centre, Faculty of Science, University of Ostrava, 71000 Ostrava, Czech Republic; (Ľ.C.); (C.B.); (A.T.S.A.); (J.R.); (A.Y.K.); (N.K.)
| | - Vyacheslav Yurchenko
- Life Science Research Centre, Faculty of Science, University of Ostrava, 71000 Ostrava, Czech Republic; (Ľ.C.); (C.B.); (A.T.S.A.); (J.R.); (A.Y.K.); (N.K.)
- Martsinovsky Institute of Medical Parasitology, Tropical and Vector Borne Diseases, Sechenov University, 119435 Moscow, Russia
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Tian L, Li X, Wang Y, Chen Q, Li X, Ge RS, Li X. Oncostatin M stimulates immature Leydig cell proliferation but inhibits its maturation and function in rats through JAK1/STAT3 signaling and induction of oxidative stress in vitro. Andrology 2021; 10:354-366. [PMID: 34516050 DOI: 10.1111/andr.13109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 08/31/2021] [Accepted: 09/10/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND Oncostatin M (OSM) is a member of the interleukin-6 group of cytokines, which can regulate cell proliferation, growth, and function. Immature Leydig cells have the ability to proliferate and differentiate, and adult Leydig cells have the function of testosterone synthesis. However, the role and underlying mechanisms of OSM on the proliferation and function of Leydig cells remain unclear. METHODS The effects of OSM on the proliferation, apoptosis, and function of immature Leydig cells isolated from 35-day-old rats and the function of adult Leydig cells isolated from 63-day-old rats in vitro. RESULTS OSM stimulated immature Leydig cell proliferation after up-regulating the expression of Ccnd1 and Cdk4 to drive the transition of G1 phase to M2 phase in the cell cycle at 10 and 100 ng/ml. OSM did not affect the apoptosis of immature Leydig cells up to 100 ng/ml. OSM inhibited testosterone production in immature and adult Leydig cells by down-regulating the expression of Lhcgr, Star, Cyp11a1, Hsd3b1, and Cyp17a1 at 1-100 ng/ml. OSM induced reactive oxygen species and down-regulated the expression of antioxidant genes and lowered mitochondrial membrane potential at 10 and 100 ng/ml in both Leydig cells. Janus kinase 1 (JAK1) antagonist filgotinib and signal transducer and activator of transcription 3 (STAT3) antagonist S3I-201 reversed the effect of OSM, indicating that it acts on JAK1/STAT3 signaling. CONCLUSION Oncostatin M stimulates immature Leydig cell proliferation while inhibiting the function of immature and adult Leydig cells.
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Affiliation(s)
- Lili Tian
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
| | - Xueyun Li
- Department of Pathology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yiyan Wang
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
| | - Quanxu Chen
- Department of Pathology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaoheng Li
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
| | - Ren-Shan Ge
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China.,Department of Obstetrics and Gynecology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xingwang Li
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
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9
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Iwasaki M, Yoshimoto M. Confinement of Metalloenzymes in PEGylated Liposomes to Formulate Colloidal Catalysts for Antioxidant Cascade. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10624-10635. [PMID: 34431680 DOI: 10.1021/acs.langmuir.1c02042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Antioxidant cascade reactions detoxifying reactive oxygen species are of significance to control oxidative stresses-triggered diseases. In the present work, the antioxidant catalysts were prepared through the confinement of dual metalloenzymes in liposomes. The amino groups of superoxide dismutase (SOD) were conjugated to the carboxyl groups-bearing liposomes encapsulated with the catalase (CAT) to formulate a spatially organized antioxidant reaction network. The activity of SOD and CAT in the liposomal system was evaluated in detail on the basis of the prolonged xanthine oxidase/xanthine reaction producing superoxide anion radicals (O2̇-) and hydrogen peroxide (H2O2) coupled with redox reactions of cytochrome c. The liposome-confined SOD and CAT molecules were clearly demonstrated to catalyze the sequential disproportionation of O2̇- and H2O2 at 25 °C in a potassium phosphate buffer solution (pH = 7.8) under moderate transfer resistance with respect to the intermediate product (H2O2) within the liposomes. Furthermore, the liposomal catalysts were modified with the poly(ethylene glycol) (PEG)-conjugated lipids with the molecular mass of the PEG moiety of about 5000 through the post-PEGylation approach. The mean hydrodynamic diameter of the PEGylated liposomal catalysts was 140-150 nm. The dual enzyme activity in liposomes and the thermal stability of the encapsulated CAT were practically unaffected by the PEGylation. The above liposome-based antioxidant catalysts are highly biocompatible, PEG-modifiable, and reactive, thereby making the catalysts potentially applicable to therapeutic materials exhibiting functionality similar to cellular peroxisomes.
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Affiliation(s)
- Masataka Iwasaki
- Department of Applied Chemistry, Yamaguchi University, Tokiwadai 2-16-1, Ube 755-8611, Japan
| | - Makoto Yoshimoto
- Department of Applied Chemistry, Yamaguchi University, Tokiwadai 2-16-1, Ube 755-8611, Japan
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10
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Gayashani Sandamalika WM, Kwon H, Lim C, Yang H, Lee J. The possible role of catalase in innate immunity and diminution of cellular oxidative stress: Insights into its molecular characteristics, antioxidant activity, DNA protection, and transcriptional regulation in response to immune stimuli in yellowtail clownfish (Amphiprion clarkii). FISH & SHELLFISH IMMUNOLOGY 2021; 113:106-117. [PMID: 33826938 DOI: 10.1016/j.fsi.2021.03.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Catalase, a key enzyme in the antioxidant defense grid of organisms, scavenges free radicals to curtail their harmful effects on the host, supporting proper immune function. Herein, we report the identification and characterization of a catalase homolog from Amphiprion clarkii (ClCat), followed by its functional characterization. An open reading frame was identified in the cDNA sequence of ClCat at 1581 bp, which encodes a protein of 527 amino acids (aa) with a molecular mass of 60 kDa. In silico analyses of ClCat revealed characteristic features of the catalase family and a lack of a signal peptide. Multiple sequence alignment of ClCat indicated the conservation of functionally important residues among its homologs. According to phylogenetic analysis, ClCat was of vertebrate origin, positioned within the teleost clade. During native conditions, ClCat mRNA was highly expressed in blood, followed by the liver and kidney. Moreover, significant changes in ClCat transcription were observed after stimulation with LPS, poly I:C, and Vibrio harveyi, in a time-dependent manner. Recombinant ClCat (rClCat) was characterized, and its peroxidase activity was determined. Furthermore, the optimum temperature and pH for rClCat were determined to be 30-40 °C and pH 7, respectively. Oxidative stress tolerance and chromatin condensation assays indicated enhanced cell survival and reduced apoptosis, resulting from reactive oxygen species scavenging by rClCat. The DNA-protective function of rClCat was further confirmed via a metal-catalyzed oxidation assay. Taken together, our findings propose that rClCat plays an essential role in maintaining cellular oxidative homeostasis and host immune protection.
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Affiliation(s)
- W M Gayashani Sandamalika
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea
| | - Hyukjae Kwon
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea
| | - Chaehyeon Lim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Hyerim Yang
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea.
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11
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Khan JM, Sen P, Malik A, Rehman MT, AlAjmi MF, Ahmed A, Alghamdi OHA, Ahmad A, Ahmed MZ, Khan RH, Anwer MK. Industrially important enzyme bovine liver catalase forms amyloid in the presence of 14-4-14 Gemini surfactant at physiological pH. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Divsalar A, Ghobadi R. The presence of deep eutectic solvents of reline and glyceline on interaction and side effect of anti-cancer drug of 5-fluorouracil: Bovine liver catalase as a target. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114588] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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13
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Liu N, Li YY, Ouyang DJ, Guo R, Chen R, Li W, Li JX, Zhao JH. Study on NO x removal from simulated flue gas by an electrobiofilm reactor: EDTA-ferrous regeneration and biological kinetics mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2860-2870. [PMID: 32894445 DOI: 10.1007/s11356-020-10617-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
The regeneration of EDTA-FeII is a key step in electrobiofilm reduction-integrated systems for NOx removal from industrial boiler flue gas. The current and carbon sources are proposed to be the two crucial electron donors for EDTA-FeII regeneration. These parameters strongly influence the reactivity of EDTA-FeII-generated products in the system. Therefore, their effects on EDTA-FeII-NO and EDTA-FeIII reduction and the EDTA-FeII generation mechanism were studied. The results showed that the electrobiofilm method has obvious advantages over biological or electrochemical methods used alone for EDTA-FeII regeneration. Under the optimal conditions at a current of 22.9A m-3 net cathode chamber, the rate of EDTA-FeII regeneration reached 98.35%. The glucose concentration is the primary factor influencing the reduction of both EDTA-FeII-NO and EDTA-FeIII, while the current significantly promotes both processes. Comparison of the Km values of the two substrates indicated that microbial activity was crucial to the reduction of EDTA-FeII-NO, but the biological reduction of EDTA-FeIII had a competitive influence on EDTA-FeII-NO reduction, which limited the abundance and effectiveness of the bacteria responsible for EDTA-FeII-NO reduction in the electrobiofilm system.
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Affiliation(s)
- Nan Liu
- China Key Laboratory of Light Industry Pollution Control and Recycling, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Ying-Ying Li
- China Key Laboratory of Light Industry Pollution Control and Recycling, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Du-Juan Ouyang
- China Key Laboratory of Light Industry Pollution Control and Recycling, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Rui Guo
- Solid Waste and Chemicals Management Center, Ministry of Ecology and Environment of the People's Republic of China, Beijing, 100029, People's Republic of China
| | - Run Chen
- China Key Laboratory of Light Industry Pollution Control and Recycling, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Wei Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Yuquan Campus, Hangzhou, 310027, People's Republic of China.
| | - Ji-Xiang Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, People's Republic of China.
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
| | - Ji-Hong Zhao
- Henan Radio & Television University, Zhengzhou, 450001, People's Republic of China
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14
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Khan JM, Malik A, Rehman MT, AlAjmi MF, Ahmed MZ, Almutairi GO, Anwer MK, Khan RH. Cationic gemini surfactant stimulates amyloid fibril formation in bovine liver catalase at physiological pH. A biophysical study. RSC Adv 2020; 10:43751-43761. [PMID: 35519682 PMCID: PMC9058321 DOI: 10.1039/d0ra07560d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/09/2020] [Indexed: 11/23/2022] Open
Abstract
Surfactant molecules stimulate amyloid fibrillation and conformational switching in proteins but the mechanisms by which they accomplish these effects are unclear. A cationic gemini surfactant, C16C4C16Br2, with two positively charged heads and two-16C hydrophobic tails induces the amyloid fibrillation of bovine liver catalase (BLC) in vitro at physiological pH. The BLC transformed into amyloid aggregates in the presence of low concentrations (2–150 μM) of C16C4C16Br2 at pH 7.4, as confirmed by the use of several biophysical techniques (Rayleigh light scattering (RLS), intrinsic fluorescence, thioflavin T fluorescence (ThT), far-UV circular dichroism, and transmission electron microscopy). The secondary structure of BLC also changed according to the concentration of C16C4C16Br2: the α-helical structure of BLC decreased in the presence of 2–100 μM of C16C4C16Br2 but at concentrations above 200 μM BLC regained a α-helical structure very similar to the native BLC. In silico molecular docking between BLC and C16C4C16Br2 suggest that the positively charged heads of the surfactant interact with Asp127 through attractive electrostatic interactions. Moreover, a Pi-cation electrostatic interaction and hydrophobic interactions also take place between the tails of the surfactant and BLC. The stability of the BLC–C16C4C16Br2 complex was confirmed by performing a molecular dynamics simulation and evaluating parameters such as root mean square deviation (RMSD), root mean square fluctuation (RMSF), radius of gyration (Rg), and solvent accessible surface area (SASA). Apart from its aggregation inducing properties, the gemini surfactant itself causes toxicity to the cancerous cell (A549): which is confirmed by MTT assay. This work delivers new insight into the effect of cationic gemini surfactants in amyloid aggregation and paves the way to the rational design of new anti-amyloidogenic agents. Surfactant molecules stimulate amyloid fibrillation and conformational switching in proteins but the mechanisms by which they accomplish these effects are unclear.![]()
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Affiliation(s)
- Javed Masood Khan
- Department of Food Science and Nutrition, Faculty of Food and Agricultural Sciences, King Saud University 2460 Riyadh 11451 Saudi Arabia
| | - Ajamaluddin Malik
- Department of Biochemistry, College of Science, King Saud University Riyadh Saudi Arabia
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Mohamed F AlAjmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Mohammad Z Ahmed
- Department of Pharmacognosy, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Ghada Obaid Almutairi
- Department of Biochemistry, College of Science, King Saud University Riyadh Saudi Arabia
| | - Md Khalid Anwer
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University Alkharj 11942 Saudi Arabia
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University Aligarh U.P. India
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15
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Zannah S, W M Arrigan D. Electrochemistry of catalase at a liquid|liquid micro-interface array. Bioelectrochemistry 2020; 138:107694. [PMID: 33333457 DOI: 10.1016/j.bioelechem.2020.107694] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 10/28/2020] [Accepted: 11/01/2020] [Indexed: 01/18/2023]
Abstract
The electrochemistry of catalase (CAT) was investigated at the interface between two immiscible electrolyte solutions (ITIES) as a step towards its detection. Electrochemistry at the ITIES offers advantages such as the non-redox detection of biomolecules. The electrochemical behaviour of CAT at the ITIES, in a micro-interface array format, displayed a distinct cyclic voltammogram when the aqueous phase pH was lower than the isoelectric point (pI) of CAT. No voltammetric response was observed when the aqueous phase pH > pI of CAT, indicating that neutral or negatively charged CAT has no capability to facilitate anion transfer from the organic phase. Adsorptive stripping voltammetry (AdSV) was assessed for detection of low concentrations at the µITIES array. Application of a positive preconcentration potential for a fixed time enabled interfacial accumulation of CAT as a complex; subsequently, a voltammetric scan to lower potentials desorbed the complex, providing the electroanalytical signal. Assessment of sample matrix effects by examining the electrochemistry of CAT in artificial serum indicated that detection in pH-adjusted samples is feasible. Together, these results demonstrate that CAT is electroactive at the liquid-liquid interface and this may be useful as a strategy to detect and characterize the enzyme in a label-free manner.
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Affiliation(s)
- Shaheda Zannah
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Damien W M Arrigan
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia.
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16
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Sierra-Campos E, Valdez-Solana M, Avitia-Domínguez C, Campos-Almazán M, Flores-Molina I, García-Arenas G, Téllez-Valencia A. Effects of Moringa oleifera Leaf Extract on Diabetes-Induced Alterations in Paraoxonase 1 and Catalase in Rats Analyzed through Progress Kinetic and Blind Docking. Antioxidants (Basel) 2020; 9:antiox9090840. [PMID: 32911700 PMCID: PMC7555439 DOI: 10.3390/antiox9090840] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/18/2020] [Accepted: 09/03/2020] [Indexed: 02/07/2023] Open
Abstract
In our study, we aimed to evaluate the effects of Moringa oleifera leaves extract on rat paraoxonase 1 (rPON1) and catalase (rCAT) activities in alloxan-induced diabetic rats. Our study included three groups; group C (control, n = 5); group D (diabetic, n = 5); and group DM (M. oleifera extract-supplemented diabetic rats, n = 5). Daily oral administration of M. oleifera extract at 200 mg/kg doses produced an increase in endogenous antioxidants. Serum rPON1 (lactonase) and liver cytosol catalase activities were determined by a spectrophotometric assay using progress curve analysis. We found a decrease in the Vm value of rPON1 in diabetic rats, but dihydrocoumarin (DHC) affinity (Km) was slightly increased. The value of Vm for the DM group was found to be reduced approximately by a factor of 3 compared with those obtained for group C, whereas Km was largely changed (96 times). Catalase activity was significantly higher in the DM group. These data suggest that the activation of rPON1 and rCAT activities by M. oleifera extracts may be mediated via the effect of the specific flavonoids on the enzyme structure. In addition, through molecular blind docking analysis, rPON1 was found to have two binding sites for flavonoids. In contrast, flavonoids bound at four sites in rCAT. In conclusion, the data suggest that compounds from M. oleifera leaves extract were able to influence the catalytic activities of both enzymes to compensate for the changes provoked by diabetes in rats.
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Affiliation(s)
- Erick Sierra-Campos
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango Campus Gómez Palacio, Avenida Artículo 123 S/N, Fracc, Filadelfia, Gómez Palacio 35010, Mexico; (M.V.-S.); (I.F.-M.)
- Correspondence: (E.S.-C.); (A.T.-V.)
| | - Mónica Valdez-Solana
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango Campus Gómez Palacio, Avenida Artículo 123 S/N, Fracc, Filadelfia, Gómez Palacio 35010, Mexico; (M.V.-S.); (I.F.-M.)
| | - Claudia Avitia-Domínguez
- Facultad de Medicina y Nutrición, Universidad Juárez del Estado de Durango, Avenida Universidad y Fanny Anitúa S/N, Durango 34000, Mexico; (C.A.-D.); (M.C.-A.)
| | - Mara Campos-Almazán
- Facultad de Medicina y Nutrición, Universidad Juárez del Estado de Durango, Avenida Universidad y Fanny Anitúa S/N, Durango 34000, Mexico; (C.A.-D.); (M.C.-A.)
| | - Ismael Flores-Molina
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango Campus Gómez Palacio, Avenida Artículo 123 S/N, Fracc, Filadelfia, Gómez Palacio 35010, Mexico; (M.V.-S.); (I.F.-M.)
| | - Guadalupe García-Arenas
- Facultad de Ciencias de la Salud, Universidad Juárez del Estado de Durango Campus, Gómez Palacio 35010, Mexico;
| | - Alfredo Téllez-Valencia
- Facultad de Medicina y Nutrición, Universidad Juárez del Estado de Durango, Avenida Universidad y Fanny Anitúa S/N, Durango 34000, Mexico; (C.A.-D.); (M.C.-A.)
- Correspondence: (E.S.-C.); (A.T.-V.)
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17
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Wu Z, Zhang S, Wang X, Cai C, Chen G, Ma L. Nitroxide-Modified Protein-Incorporated Nanoflowers with Dual Enzyme-Like Activities. Int J Nanomedicine 2020; 15:263-273. [PMID: 32021179 PMCID: PMC6970245 DOI: 10.2147/ijn.s220718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 01/02/2020] [Indexed: 01/01/2023] Open
Abstract
Purpose Combined superoxide dismutase (SOD)/catalase mimetics have attracted much attention because of their efficacy against reactive oxygen species-associated diseases; however, their application is often limited owing to their poor stability and the absence of favorable grafting sites. To address this, we developed a new class of SOD/catalase mimetics based on hybrid nanoflowers, which exhibit superior stability and possess the desired grafting sites for drugs and endogenous molecules. Methods In this work, for the first time, we used polynitroxylated human serum albumin (PNA) to mediate the formation of hybrid copper-based nanoflowers. H2O2 depletion and O2 evolution assays were first performed to determine the catalase-like activity of the hybrid nanoflowers. Next, the xanthine oxidase/cytochrome c method was used to assay the SOD-like activity of the nanoflowers. Further characteristics of the nanoflowers were evaluated using scanning electron microscopy (SEM), electron paramagnetic resonance (EPR), and Fourier-transform infrared spectroscopy (FTIR). Operational stability was assessed via the reusability assay. Results The H2O2 depletion and O2 evolution assays indicated that PNA-incorporated nanoflowers have genuine catalase-like activity. Kinetic analysis revealed that the reactions of the incorporated nanoflowers with H2O2 not only obey Michaelis-Menton kinetics, but that the nanoflowers also possess a higher affinity for H2O2 than that of native catalase. The FTIR spectra corroborated the presence of PNA in the hybrid nanoflowers, while the EPR spectra confirmed the intermolecular interaction of nitroxides bound to the human serum albumin incorporated into the nanoflowers. The remarkable operational reproducibility of the hybrid nanoflowers in catalase-like and SOD-like reactions was verified across successive batches. Conclusion Herein, a comparison of Michaelis constants showed that the hybrid nanoflower, a catalase mimetics, outperforms the native catalase. Acting as a "better-than-nature" enzyme mimetics, the hybrid nanoflower with superior stability and desired ligand grafting sites will find widespread utilization in the medical sciences.
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Affiliation(s)
- Zhuofu Wu
- Key Laboratory of Straw Biology and Utilization, The Ministry of Education, College of Life Science, Jilin Agricultural University, Changchun 130118, People's Republic of China.,Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA
| | - Sitong Zhang
- Key Laboratory of Straw Biology and Utilization, The Ministry of Education, College of Life Science, Jilin Agricultural University, Changchun 130118, People's Republic of China
| | - Xiaojun Wang
- Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA
| | - Can Cai
- Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA
| | - Guang Chen
- Key Laboratory of Straw Biology and Utilization, The Ministry of Education, College of Life Science, Jilin Agricultural University, Changchun 130118, People's Republic of China
| | - Li Ma
- Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA
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18
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Collazos N, García G, Malagón A, Caicedo O, Vargas EF. Binding interactions of a series of sulfonated water-soluble resorcinarenes with bovine liver catalase. Int J Biol Macromol 2019; 139:75-84. [DOI: 10.1016/j.ijbiomac.2019.07.197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/24/2019] [Accepted: 07/29/2019] [Indexed: 11/29/2022]
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19
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Ali I, Khan SN, Chatzicharalampous C, Bai D, Abu-Soud HM. Catalase prevents myeloperoxidase self-destruction in response to oxidative stress. J Inorg Biochem 2019; 197:110706. [PMID: 31103890 DOI: 10.1016/j.jinorgbio.2019.110706] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 04/17/2019] [Accepted: 05/02/2019] [Indexed: 12/29/2022]
Abstract
Catalase (CAT) and myeloperoxiase (MPO) are heme-containing enzymes that have attracted attention for their role in the etiology of numerous respiratory disorders such as cystic fibrosis, bronchial asthma, and acute hypoxemic respiratory failure. However, information regarding the interrelationship and competition between the two enzymes, free iron accumulation, and decreased levels of non-enzymatic antioxidants at sites of inflammation is still lacking. Myeloperoxidase catalyzes the generation of hypochlorous acid (HOCl) from the reaction of hydrogen peroxide (H2O2) and chloride (Cl-). Self-generated HOCl has recently been proposed to auto-inhibit MPO through a mechanism that involves MPO heme destruction. Here, we investigate the interplay of MPO, HOCl, and CAT during catalysis, and explore the crucial role of MPO inhibitors and HOCl scavengers in protecting the catalytic site from protein modification of both enzymes against oxidative damage mediated by HOCl. We showed that CAT not only competes with MPO for H2O2 but also scavenges HOCl. The protective role provided by CAT versus the damaging effect provided by HOCl depends in part on the ratio between MPO/CAT and the affinity of the enzymes towards H2O2 versus HOCl. The severity of such damaging effects mainly depends on the ratio of HOCl to enzyme heme content. In addition to its effect in mediating protein modification and aggregation, HOCl oxidatively destroys the catalytic sites of the enzymes, which contain porphyrin rings and iron. Thus, modulation of MPO/CAT activities may be a fundamental feature of catalysis, and functions to down-regulate HOCl synthesis and prevent hemoprotein heme destruction and/or protein modification.
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Affiliation(s)
- Iyad Ali
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Detroit, MI 48201, USA; Department of Biochemistry and Genetics, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus 7, Palestine
| | - Sana N Khan
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Detroit, MI 48201, USA
| | | | - David Bai
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Detroit, MI 48201, USA
| | - Husam M Abu-Soud
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Detroit, MI 48201, USA; Department of Microbiology, Immunology and Biochemistry, Wayne State University School of Medicine, Detroit, MI, 48201, USA.
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Amanullah S, Singha A, Dey A. Tailor made iron porphyrins for investigating axial ligand and distal environment contributions to electronic structure and reactivity. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.01.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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21
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Affiliation(s)
- Kazuo Kobayashi
- The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
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22
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Adam SM, Wijeratne GB, Rogler PJ, Diaz DE, Quist DA, Liu JJ, Karlin KD. Synthetic Fe/Cu Complexes: Toward Understanding Heme-Copper Oxidase Structure and Function. Chem Rev 2018; 118:10840-11022. [PMID: 30372042 PMCID: PMC6360144 DOI: 10.1021/acs.chemrev.8b00074] [Citation(s) in RCA: 145] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Heme-copper oxidases (HCOs) are terminal enzymes on the mitochondrial or bacterial respiratory electron transport chain, which utilize a unique heterobinuclear active site to catalyze the 4H+/4e- reduction of dioxygen to water. This process involves a proton-coupled electron transfer (PCET) from a tyrosine (phenolic) residue and additional redox events coupled to transmembrane proton pumping and ATP synthesis. Given that HCOs are large, complex, membrane-bound enzymes, bioinspired synthetic model chemistry is a promising approach to better understand heme-Cu-mediated dioxygen reduction, including the details of proton and electron movements. This review encompasses important aspects of heme-O2 and copper-O2 (bio)chemistries as they relate to the design and interpretation of small molecule model systems and provides perspectives from fundamental coordination chemistry, which can be applied to the understanding of HCO activity. We focus on recent advancements from studies of heme-Cu models, evaluating experimental and computational results, which highlight important fundamental structure-function relationships. Finally, we provide an outlook for future potential contributions from synthetic inorganic chemistry and discuss their implications with relevance to biological O2-reduction.
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Affiliation(s)
- Suzanne M. Adam
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Gayan B. Wijeratne
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Patrick J. Rogler
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Daniel E. Diaz
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - David A. Quist
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Jeffrey J. Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kenneth D. Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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23
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Guan H, Sun S, Mao Y, Chen L, Lu R, Huang J, Liu L. Iron(II)-Catalyzed Site-Selective Functionalization of Unactivated C(sp3
)−H Bonds Guided by Alkoxyl Radicals. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806434] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Honghao Guan
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Shutao Sun
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Ying Mao
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Lei Chen
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Ran Lu
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Jiancheng Huang
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Lei Liu
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
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24
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Guan H, Sun S, Mao Y, Chen L, Lu R, Huang J, Liu L. Iron(II)-Catalyzed Site-Selective Functionalization of Unactivated C(sp3
)−H Bonds Guided by Alkoxyl Radicals. Angew Chem Int Ed Engl 2018; 57:11413-11417. [DOI: 10.1002/anie.201806434] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/16/2018] [Indexed: 01/17/2023]
Affiliation(s)
- Honghao Guan
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Shutao Sun
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Ying Mao
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Lei Chen
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Ran Lu
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
| | - Jiancheng Huang
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Lei Liu
- School of Pharmaceutical Sciences; Shandong University; Jinan 250012 P. R. China
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
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25
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There is no evidence to support literature claims of direct electron transfer (DET) for native glucose oxidase (GOx) at carbon nanotubes or graphene. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.06.021] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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26
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Sepasi Tehrani H, Moosavi-Movahedi AA. Catalase and its mysteries. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2018. [PMID: 29530789 DOI: 10.1016/j.pbiomolbio.2018.03.001] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalase is one of the firsts in every realm of biological sciences. At the same time it also has a number of unusual features. It has one of the highest turnover numbers of all enzymes. It is essential for neutralizing the noxious hydrogen peroxide both in the nature and the various industries such as dairy, textile and pharmaceutics. It also has the merit of being one of the first protein crystals to be isolated. Ironically its three-dimensional structure was discerned some forty years later. However through the times this senile enzyme has continued to intrigue the scientists by surprising facts and phenomena, such as peculiar interweaving of subunits and remarkable thermal stability. It is also known for suicide inactivation by its own substrate. Catalase is known to be implicated in various medical scenarios and its levels have served as a marker in that capacity. It has even been incorporated into several pharmaceuticals. This review strives to clarify these perspectives. It also draws attention to the biophysical contributions offered by thermodynamics and kinetics in these discoveries. The ultimate aim of this review, however, is to state that the venerable catalase will continue to bewilder us with its mysteries well into the twenty-first century.
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Affiliation(s)
- Hessam Sepasi Tehrani
- Department of Biology, Islamic Azad University, Science and Research Branch, Tehran, Iran.
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27
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Xie G, Hong WX, Zhou L, Yang X, Huang H, Wu D, Huang X, Zhu W, Liu J. An investigation of methyl tert‑butyl ether‑induced cytotoxicity and protein profile in Chinese hamster ovary cells. Mol Med Rep 2017; 16:8595-8604. [PMID: 29039499 PMCID: PMC5779912 DOI: 10.3892/mmr.2017.7761] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 11/15/2016] [Indexed: 11/23/2022] Open
Abstract
Methyl tert-butyl ether (MTBE) is widely used as an oxygenating agent in gasoline to reduce harmful emissions. However, previous studies have demonstrated that MTBE is a cytotoxic substance that has harmful effects in vivo and in vitro. Although remarkable progress has been made in elucidating the mechanisms underlying the MTBE-induced reproductive toxicological effect in different cell lines, the precise mechanisms remain far from understood. The present study aimed to evaluate whether mammalian ovary cells were sensitive to MTBE exposure in vitro by assessing cell viability, lactate dehydrogenase (LDH) leakage, malondialdehyde (MDA) content and antioxidant enzyme activities. In addition, the effect of MTBE exposure on differential protein expression profiles was examined by two-dimensional electrophoresis and matrix-assisted laser desorption/ionization-time of flight mass spectrometry. MTBE exposure induced significant effects on cell viability, LDH leakage, plasma membrane damage and the activity of antioxidant enzymes. In the proteomic analysis, 24 proteins were demonstrated to be significantly affected by MTBE exposure. Functional analysis indicated that these proteins were involved in catalytic activity, binding, structural molecule activity, metabolic processes, cellular processes and localization, highlighting the fact that the cytotoxic mechanisms resulting from MTBE exposure are complex and diverse. The altered expression levels of two representative proteins, heat shock protein family A (Hsp70) members 8 and 9, were further confirmed by western blot analysis. The results revealed that MTBE exposure affects protein expression in Chinese hamster ovary cells and that oxidative stress and altered protein levels constitute the mechanisms underlying MTBE-induced cytotoxicity. These findings provided novel insights into the biochemical mechanisms involved in MTBE-induced cytotoxicity in the reproductive system.
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Affiliation(s)
- Guangshan Xie
- Shenzhen Research Institute of Population and Family Planning, Shenzhen, Guangdong 518040, P.R. China
| | - Wen-Xu Hong
- Shenzhen Research Institute of Population and Family Planning, Shenzhen, Guangdong 518040, P.R. China
| | - Li Zhou
- Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, P.R. China
| | - Xifei Yang
- Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, P.R. China
| | - Haiyan Huang
- Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, P.R. China
| | - Desheng Wu
- Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, P.R. China
| | - Xinfeng Huang
- Key Laboratory of Modern Toxicology of Shenzhen, Medical Key Laboratory of Guangdong Province, Medical Key Laboratory of Health Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, P.R. China
| | - Weiguo Zhu
- Department of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
| | - Jianjun Liu
- Shenzhen Research Institute of Population and Family Planning, Shenzhen, Guangdong 518040, P.R. China
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28
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Khan MV, Zaman M, Chandel TI, Siddiqui MK, Ajmal MR, Abdelhameed AS, Khan RH. Cationic surfactant mediated fibrillogenesis in bovine liver catalase: a biophysical approach. J Biomol Struct Dyn 2017; 36:2543-2557. [DOI: 10.1080/07391102.2017.1363085] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mohsin Vahid Khan
- Molecular Biophysics and Biophysical Chemistry Group, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Masihuz Zaman
- Molecular Biophysics and Biophysical Chemistry Group, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Tajalli Ilm Chandel
- Molecular Biophysics and Biophysical Chemistry Group, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammad Khursheed Siddiqui
- Molecular Biophysics and Biophysical Chemistry Group, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd. Rehan Ajmal
- Molecular Biophysics and Biophysical Chemistry Group, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Ali Saber Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rizwan Hasan Khan
- Molecular Biophysics and Biophysical Chemistry Group, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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29
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Lu Y, Bai Q, Zheng X, Lu Z. Expression and Enzyme Activity of Catalase in Chilo suppressalis (Lepidoptera: Crambidae) Is Responsive to Environmental Stresses. JOURNAL OF ECONOMIC ENTOMOLOGY 2017; 110:1803-1812. [PMID: 28419293 DOI: 10.1093/jee/tox117] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Indexed: 06/07/2023]
Abstract
Catalase (CAT) is an important antioxidant enzyme that protects organisms against oxidative stresses by eliminating hydrogen peroxide. In this study, we cloned and characterized a full-length cDNA of CAT from Chilo suppressalis (CsCAT) and examined the influence of environmental stresses on CsCAT expression and enzyme activity. The cDNA contains a 1659-bp open reading frame encoding a polypeptide of 553 amino acids most closely related (90.14%) to Papilio polytes catalases. The CsCAT was expressed in all developmental stages with the highest expression in the fat body, and the CsCAT enzyme activity closely mirrored its observed mRNA expression patterns. The CsCAT mRNA was up-regulated when the larvae were exposed to high temperature (≥30 °C), insecticides (abamectin and chlorantraniliprole), chemicals (H2O2, CHP, CdCl2, and CuSO4), and a dead-end trap plant (vetiver grass), and the CsCAT enzyme activity again mirrored the observed CsCAT expression patterns. These results suggest that up-regulation of CsCAT may enhance the defense response of C. suppressalis by weakening the effects of environmental stresses, and provide insight into the role of CsCAT during development of C. suppressalis.
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Affiliation(s)
- Yanhui Lu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Qi Bai
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Xusong Zheng
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Zhongxian Lu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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30
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Yamada M, Hashimoto Y, Kumano T, Tsujimura S, Kobayashi M. New function of aldoxime dehydratase: Redox catalysis and the formation of an unexpected product. PLoS One 2017; 12:e0175846. [PMID: 28410434 PMCID: PMC5391958 DOI: 10.1371/journal.pone.0175846] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 03/31/2017] [Indexed: 11/21/2022] Open
Abstract
In general, hemoproteins are capable of catalyzing redox reactions. Aldoxime dehydratase (OxdA), which is a unique heme-containing enzyme, catalyzes the dehydration of aldoximes to the corresponding nitriles. Its reaction is a rare example of heme directly activating an organic substrate, unlike the utilization of H2O2 or O2 as a mediator of catalysis by other heme-containing enzymes. While it is unknown whether OxdA catalyzes redox reactions or not, we here for the first time detected catalase activity (which is one of the redox activities) of wild-type OxdA, OxdA(WT). Furthermore, we constructed a His320 → Asp mutant of OxdA [OxdA(H320D)], and found it exhibits catalase activity. Determination of the kinetic parameters of OxdA(WT) and OxdA(H320D) revealed that their Km values for H2O2 were similar to each other, but the kcat value of OxdA(H320D) was 30 times higher than that of OxdA(WT). Next, we examined another redox activity and found it was the peroxidase activity of OxdAs. While both OxdA(WT) and OxdA(H320D) showed the activity, the activity of OxdA(H320D) was dozens of times higher than that of OxdA(WT). These findings demonstrated that the H320D mutation enhances the peroxidase activity of OxdA. OxdAs (WT and H320D) were found to catalyze another redox reaction, a peroxygenase reaction. During this reaction of OxdA(H320D) with 1-methoxynaphthalene as a substrate, surprisingly, the reaction mixture changed to a color different from that with OxdA(WT), which was due to the known product, Russig’s blue. We purified and identified the new product as 1-methoxy-2-naphthalenol, which has never been reported as a product of the peroxygenase reaction, to the best of our knowledge. These findings indicated that the H320D mutation not only enhanced redox activities, but also significantly altered the hydroxylation site of the substrate.
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Affiliation(s)
- Masatoshi Yamada
- Institute of Applied Biochemistry and Graduate School of Life and Environmental Sciences, The University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yoshiteru Hashimoto
- Institute of Applied Biochemistry and Graduate School of Life and Environmental Sciences, The University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Takuto Kumano
- Institute of Applied Biochemistry and Graduate School of Life and Environmental Sciences, The University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Seiya Tsujimura
- Division of Materials Science, Faculty of Pure and Applied Sciences, The University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Michihiko Kobayashi
- Institute of Applied Biochemistry and Graduate School of Life and Environmental Sciences, The University of Tsukuba, Tsukuba, Ibaraki, Japan
- * E-mail:
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31
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Fusco G, Bollella P, Mazzei F, Favero G, Antiochia R, Tortolini C. Catalase-Based Modified Graphite Electrode for Hydrogen Peroxide Detection in Different Beverages. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2016; 2016:8174913. [PMID: 28078163 PMCID: PMC5203923 DOI: 10.1155/2016/8174913] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 11/02/2016] [Accepted: 11/09/2016] [Indexed: 05/30/2023]
Abstract
A catalase-based (NAF/MWCNTs) nanocomposite film modified glassy carbon electrode for hydrogen peroxide (H2O2) detection was developed. The developed biosensor was characterized in terms of its bioelectrochemical properties. Cyclic voltammetry (CV) technique was employed to study the redox features of the enzyme in the absence and in the presence of nanomaterials dispersed in Nafion® polymeric solution. The electron transfer coefficient, α, and the electron transfer rate constant, ks , were found to be 0.42 and 1.71 s-1, at pH 7.0, respectively. Subsequently, the same modification steps were applied to mesoporous graphite screen-printed electrodes. Also, these electrodes were characterized in terms of their main electrochemical and kinetic parameters. The biosensor performances improved considerably after modification with nanomaterials. Moreover, the association of Nafion with carbon nanotubes retained the biological activity of the redox protein. The enzyme electrode response was linear in the range 2.5-1150 μmol L-1, with LOD of 0.83 μmol L-1. From the experimental data, we can assess the possibility of using the modified biosensor as a useful tool for H2O2 determination in packaged beverages.
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Affiliation(s)
- Giovanni Fusco
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Rome, Italy
- Department of Chemistry, Sapienza University of Rome, Rome, Italy
| | - Paolo Bollella
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Rome, Italy
| | - Franco Mazzei
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Rome, Italy
| | - Gabriele Favero
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Rome, Italy
| | - Riccarda Antiochia
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Rome, Italy
| | - Cristina Tortolini
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Rome, Italy
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32
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Harifi-Mood AR, Ghobadi R, Divsalar A. The effect of deep eutectic solvents on catalytic function and structure of bovine liver catalase. Int J Biol Macromol 2016; 95:115-120. [PMID: 27856320 DOI: 10.1016/j.ijbiomac.2016.11.043] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 11/09/2016] [Accepted: 11/13/2016] [Indexed: 11/25/2022]
Abstract
Aqueous solutions of reline and glyceline, the most common deep eutectic solvents, were used as a medium for Catalase reaction. By some spectroscopic methods such as UV-vis, fluorescence and circular dichroism (CD) function and structure of Catalase were investigated in aqueous solutions of reline and glyceline. These studies showed that the binding affinity of the substrate to the enzyme increased in the presence of 100mM glyceline solution, which contrasts with reline solution that probably relates to instructive changes in secondary structure of protein. Meanwhile, enzyme remained nearly 70% and 80% active in this concentration of glyceline and reline solutions respectively. In the high concentration of DES solutions, enzyme became mainly inactive but surprisingly stayed in nearly 40% active in choline chloride solution, which is the common ion species in reline and glyceline solvents. It is proposed that the chaotropic nature of choline cation might stop the reducing trend of activity in concentrated choline chloride solutions but this instructive effect is lost in aqueous deep eutectic solvents. In this regard, the presence of various concentrations of deep eutectic solvents in the aqueous media of human cells would be an activity adjuster for this important enzyme in its different operation conditions.
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Affiliation(s)
| | | | - Adeleh Divsalar
- Department of Cell & Molecular Sciences, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran.
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34
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Do pH and flavonoids influence hypochlorous acid-induced catalase inhibition and heme modification? Int J Biol Macromol 2015; 80:162-9. [DOI: 10.1016/j.ijbiomac.2015.06.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 06/19/2015] [Accepted: 06/20/2015] [Indexed: 02/01/2023]
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35
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Huang XN, Du XY, Xing JF, Ge ZQ. Catalase-only nanoparticles prepared by shear alone: Characteristics, activity and stability evaluation. Int J Biol Macromol 2015; 90:81-8. [PMID: 26318217 DOI: 10.1016/j.ijbiomac.2015.08.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 08/24/2015] [Indexed: 12/21/2022]
Abstract
Catalase is a promising therapeutic enzyme; however, it carries risks of inactivation and rapid degradation when it is used in practical bioprocess, such as delivery in vivo. To overcome the issue, we made catalase-only nanoparticles using shear stress alone at a moderate shear rate of 217s(-1) in a coaxial cylinder flow cell. Properties of nanoparticles, including particle size, polydispersity index and zeta potential, were characterized. The conformational changes of pre- and post-sheared catalase were determined using spectroscopy techniques. The results indicated that the conformational changes of catalase and reduction in α-helical content caused by shear alone were less significant than that by desolvation method. Catalase-only nanoparticles prepared by single shear retained over 90% of its initial activity when compared with the native catalase. Catalase nanoparticles lost only 20% of the activity when stored in phosphate buffer solution for 72h at 4°C, whereas native catalase lost 53% under the same condition. Especially, the activity of nanogranulated catalase was decreased only slightly in the simulated intestinal fluid containing α-chymotrypsin during 4h incubation at 37°C, implying that the catalase nanoparticle was more resistant to the degradation of proteases than native catalase molecules. Overall, catalase-only nanoparticles offered a great potential to stabilize enzymes for various pharmaceutical applications.
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Affiliation(s)
- Xiao-Nan Huang
- Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Education Ministry Key Laboratory of Systems Bioengineering, Tianjin 300072, PR China
| | - Xin-Ying Du
- Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Education Ministry Key Laboratory of Systems Bioengineering, Tianjin 300072, PR China
| | - Jin-Feng Xing
- Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Education Ministry Key Laboratory of Systems Bioengineering, Tianjin 300072, PR China
| | - Zhi-Qiang Ge
- Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Education Ministry Key Laboratory of Systems Bioengineering, Tianjin 300072, PR China.
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36
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Dong C, Zheng X, Diao Y, Wang Y, Zhou M, Hu Z. Molecular Cloning and Expression Analysis of a Catalase Gene (NnCAT) from Nelumbo nucifera. Appl Biochem Biotechnol 2015; 177:1216-28. [PMID: 26299377 DOI: 10.1007/s12010-015-1808-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 08/12/2015] [Indexed: 11/26/2022]
Abstract
Rapid amplification cDNA end (RACE) assay was established to achieve the complete cDNA sequence of a catalase gene (NnCAT) from Nelumbo nucifera. The obtained full-length cDNA was 1666 bp in size and contained a 1476-bp open reading frame. The 3D structural model of NnCAT was constructed by homology modeling. The putative NnCAT possessed all the main characteristic amino acid residues and motifs of catalase (CAT) protein family, and the phylogenetic analysis revealed that NnCAT grouped together with high plants. Moreover, recombinant NnCAT showed the CAT activity (758 U/mg) at room temperature, holding high activity during temperature range of 20-50 °C, then the optimal pH of recombinant protein was assessed from pH 4 to pH 11. Additionally, real-time PCR assay demonstrated that NnCAT mRNA was expressed in various tissues of N. nucifera, with the highest expression in young leaf and lowest level in the root, and mRNA level of NnCAT was significantly augmented in response to short-time mechanical wounding. Different expression pattern of NnCAT gene suggested that NnCAT probably played a defensive role in the initial stages of oxidative stress, regulating the level of reactive oxygen species (ROS) by extracellular stimuli such as short-time mechanical wounding.
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Affiliation(s)
- Chen Dong
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan, 450051, China
| | - Xingfei Zheng
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, 430072, China
| | - Ying Diao
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, 430072, China
| | - Youwei Wang
- Lotus Center, Wuhan University, Wuhan, 430072, China
| | - Mingquan Zhou
- Lotus Center, Wuhan University, Wuhan, 430072, China
| | - Zhongli Hu
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, 430072, China.
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37
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Akhtar S, Randhawa M, Riaz M, Hameed A, Ismail T, Ismail A, Ali Z. Food safety conundrum: a Pakistan's scenario. QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS 2015. [DOI: 10.3920/qas2014.0435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S. Akhtar
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - M.A. Randhawa
- National Institute of Food Science and Technology, University of Agriculture Faisalabad, 38040 Faisalabad, Pakistan
| | - M. Riaz
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - A. Hameed
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - T. Ismail
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - A. Ismail
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - Z. Ali
- Department of Agriculture and Food Technology, Karakoram International University, 15100 Gilgit-Baltistan, Pakistan
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38
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Smith AT, Pazicni S, Marvin KA, Stevens DJ, Paulsen KM, Burstyn JN. Functional divergence of heme-thiolate proteins: a classification based on spectroscopic attributes. Chem Rev 2015; 115:2532-58. [PMID: 25763468 DOI: 10.1021/cr500056m] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aaron T Smith
- †Department of Molecular Biosciences, Northwestern University, 2205 Tech Drive, Evanston, Illinois 60208, United States
| | - Samuel Pazicni
- ‡Department of Chemistry, University of New Hampshire, 23 Academic Way, Durham, New Hampshire 03824, United States
| | - Katherine A Marvin
- §Department of Chemistry, Hendrix College, 1600 Washington Avenue, Conway, Arkansas 72032, United States
| | - Daniel J Stevens
- ∥Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Katherine M Paulsen
- ∥Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Judith N Burstyn
- ∥Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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Aniket, Gaul DA, Bitterfield DL, Su JT, Li VM, Singh I, Morton J, Needham D. Enzyme Dehydration Using Microglassification™ Preserves the Protein's Structure and Function. J Pharm Sci 2015; 104:640-51. [DOI: 10.1002/jps.24279] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/29/2014] [Accepted: 11/03/2014] [Indexed: 11/08/2022]
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Özcan HM, Aydin T. A new PANI biosensor based on catalase for cyanide determination. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:664-71. [DOI: 10.3109/21691401.2014.978979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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41
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Ezhil Vilian A, Chen SM, Lou BS. A simple strategy for the immobilization of catalase on multi-walled carbon nanotube/poly (l-lysine) biocomposite for the detection of H2O2 and iodate. Biosens Bioelectron 2014; 61:639-47. [DOI: 10.1016/j.bios.2014.05.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 05/08/2014] [Accepted: 05/10/2014] [Indexed: 10/25/2022]
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Yoon S, Jang CH. Liquid Crystal Droplet Patterns to Monitor Catalase Activity at Femtomolar Levels. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.9.2704] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Borges PT, Frazão C, Miranda CS, Carrondo MA, Romão CV. Structure of the monofunctional heme catalase DR1998 from Deinococcus radiodurans. FEBS J 2014; 281:4138-50. [PMID: 24975828 DOI: 10.1111/febs.12895] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 06/12/2014] [Accepted: 06/24/2014] [Indexed: 11/30/2022]
Abstract
UNLABELLED Deinococcus radiodurans is an aerobic organism with the ability to survive under conditions of high radiation doses or desiccation. As part of its protection system against oxidative stress, this bacterium encodes three monofunctional catalases. The DR1998 catalase belongs to clade 1, and is present at high levels under normal growth conditions. The crystals of DR1998 diffracted very weakly, and the merged diffraction data showed an R sym of 0.308. Its crystal structure was determined and refined to 2.6 Å. The four molecules present in the asymmetric unit form, by crystallographic symmetry, two homotetramers with 222 point-group symmetry. The overall structure of DR1998 is similar to that of other monofunctional catalases, showing higher structural homology with the catalase structures of clade 1. Each monomer shows the typical catalase fold, and contains one heme b in the active site. The heme is coordinated by the proximal ligand Tyr369, and on the heme distal side the essential His81 and Asn159 are hydrogen-bonded to a water molecule. A 25-Å-long channel is the main channel connecting the active site to the external surface. This channel starts with a hydrophobic region from the catalytic heme site, which is followed by a hydrophilic region that begins on Asp139 and expands up to the protein surface. Apart from this channel, an alternative channel, also near the heme active site, is presented and discussed. DATABASE Coordinates and structure factors have been deposited in the Protein Data Bank in Europe under accession code 4CAB.
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Affiliation(s)
- Patrícia T Borges
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal
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Wang ZJ, Renata H, Peck NE, Farwell CC, Coelho PS, Arnold FH. Improved cyclopropanation activity of histidine-ligated cytochrome P450 enables the enantioselective formal synthesis of levomilnacipran. Angew Chem Int Ed Engl 2014; 53:6810-3. [PMID: 24802161 PMCID: PMC4120663 DOI: 10.1002/anie.201402809] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Indexed: 02/03/2023]
Abstract
Engineering enzymes capable of modes of activation unprecedented in nature will increase the range of industrially important molecules that can be synthesized through biocatalysis. However, low activity for a new function is often a limitation in adopting enzymes for preparative-scale synthesis, reaction with demanding substrates, or when a natural substrate is also present. By mutating the proximal ligand and other key active-site residues of the cytochrome P450 enzyme from Bacillus megaterium (P450-BM3), a highly active His-ligated variant of P450-BM3 that can be employed for the enantioselective synthesis of the levomilnacipran core was engineered. This enzyme, BM3-Hstar, catalyzes the cyclopropanation of N,N-diethyl-2-phenylacrylamide with an estimated initial rate of over 1000 turnovers per minute and can be used under aerobic conditions. Cyclopropanation activity is highly dependent on the electronic properties of the P450 proximal ligand, which can be used to tune this non-natural enzyme activity.
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Affiliation(s)
| | | | - Nicole E. Peck
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 210-41, Pasadena, CA, 91125 (USA)
| | - Christopher C. Farwell
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 210-41, Pasadena, CA, 91125 (USA)
| | - Pedro S. Coelho
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 210-41, Pasadena, CA, 91125 (USA)
| | - Frances H. Arnold
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd. MC 210-41, Pasadena, CA, 91125 (USA)
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Wang ZJ, Renata H, Peck NE, Farwell CC, Coelho PS, Arnold FH. Improved Cyclopropanation Activity of Histidine-Ligated Cytochrome P450 Enables the Enantioselective Formal Synthesis of Levomilnacipran. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402809] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Guan J, Dai J, Zhao X, Liu C, Gao C, Liu R. Spectroscopic investigations on the interaction between carbon nanotubes and catalase on molecular level. J Biochem Mol Toxicol 2014; 28:211-6. [PMID: 24616245 DOI: 10.1002/jbt.21555] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 01/19/2014] [Accepted: 02/01/2014] [Indexed: 12/29/2022]
Abstract
The interactions between well-dispersed multiwalled carbon nanotubes (MWCNTs) and catalase (CAT) were investigated. The activity of CAT was inhibited with the addition of MWCNTs. After deducting the inner filter effect, the fluorescence spectra revealed that the tryptophan (Trp) residues were exposed and the fluorescence intensities of CAT increased with the increase in the MWCNTs concentration. At the same time, the environment of the Trp residues became more hydrophobic. The results of UV-vis absorption spectroscopy and CD spectra indicated that the secondary structure of CAT had been changed, and the amino acid residues were located in a more hydrophobic environment. Meanwhile, the UV-vis spectra indicated that the conformation of the heme porphyrin rings was changed. The microenvironment of CAT activity sites may be interfered by MWCNTs. This research showed that MWCNTs could not only contribute to the conformational changes of protein but also change the enzyme function.
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Affiliation(s)
- Jin Guan
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, Jinan, 250100, People's Republic of China
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Tehrani HS, Moosavi-Movahedi A, Ghourchian H. Correlation between biological activity and electron transferring of bovine liver catalase: Osmolytes effects. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.09.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sawyer DT, Spencer L, Sugimoto H. [FeII(MeCN)4]2+(ClO4−)2and [FeIIICl33] as Mimics for the Catalytic Centers of Peroxidase, Catalase and Cvtochrome P-450. Isr J Chem 2013. [DOI: 10.1002/ijch.198800003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yang B, Hao F, Li J, Chen D, Liu R. Binding of chrysoidine to catalase: Spectroscopy, isothermal titration calorimetry and molecular docking studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 128:35-42. [DOI: 10.1016/j.jphotobiol.2013.08.006] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 08/03/2013] [Accepted: 08/05/2013] [Indexed: 02/01/2023]
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