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Kumar A, Verma H, Gangwar P, Jangid K, Kumar V, Dhiman M, Jaitak V. Estrogen receptor alpha (ER-α) antagonistic activity of phytoconstituents from Potentilla atrosanguinea and Potentilla fulgens in breast cancer. Fitoterapia 2024; 177:106123. [PMID: 39004288 DOI: 10.1016/j.fitote.2024.106123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/07/2024] [Accepted: 07/08/2024] [Indexed: 07/16/2024]
Abstract
The Potentilla genus has long been used traditionally as food and a folklore medicine. In the present study, aerial parts of two Potentilla species, Potentilla fulgens and Potentilla atrosanguinea, of western Himalayan origin, were studied for their anti-breast cancer activity. Ethyl acetate (PAA-EA, PFA-EA), methanolic (PAA-ME, PFA-ME) and hydro-methanolic extract (PAA-HM, PFA-HM) of the plants were tested for their antiproliferative activities against MCF-7 and T-47D breast cancer cell lines. The extracts showed good antiproliferative activity against ER-α dominant breast cancer cell line T-47D, having IC50 values 6.19 ± 0.01 to 33.23 ± 0.04 μg/ml. Eight compounds were isolated, characterized, and quantified from ethyl acetate and methanolic extracts by column chromatography, 1D, 2D-NMR, HRMS and TLC densitometric analysis. Two compounds (4 and 6) have shown better antiproliferative activity than standard bazedoxifene and were further evaluated for their ER-α binding affinity via-fluorescence polarization-based competitive binding assay. The antiestrogenic properties of both compounds were assessed using western blotting. Compounds 4 and 6 were found to have significant affinity for the ER-α and managed to decrease its expression by 38 and 54% respectively. Compounds 4 and 6 also had good stability and reactivity as measured by minimal fluctuations in molecular dynamic simulation analysis, a good dock score in molecular docking, and a respectable HOMO-LUMO energy gap in DFT calculations. Compounds 4 and 6 have shown reliable results and can be used in the development of natural product-based anti-breast cancer agents.
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Affiliation(s)
- Amit Kumar
- Natural Products Chemistry Lab, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Harkomal Verma
- Department of Zoology, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Prabhakar Gangwar
- Department of Zoology, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Kailash Jangid
- Department of Chemistry, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Vinod Kumar
- Department of Chemistry, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Monisha Dhiman
- Department of Microbiology, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Vikas Jaitak
- Natural Products Chemistry Lab, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India..
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Kumar A, Backer N, Paliwal H, Singh AK, Debbaraman T, Singh V, Kumar P. Synthesis and anticancer evaluation of diaryl pyrido[2,3-d]pyrimidine /alkyl substituted pyrido[2,3-d]pyrimidine derivatives as thymidylate synthase inhibitors. BMC Chem 2024; 18:161. [PMID: 39198882 PMCID: PMC11361161 DOI: 10.1186/s13065-024-01228-w] [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: 02/29/2024] [Accepted: 06/13/2024] [Indexed: 09/01/2024] Open
Abstract
Worldwide, colorectal cancer (CRC) is the third most common type of cancer and the second most common cause of cancer-related deaths. Thymidylate synthase (TS) is a crucial component of DNA biosynthesis and has drawn interest as an essential target for cancer treatment. In the current work, we have designed and synthesized twenty-eight new diaryl-based pyrido[2,3-d]pyrimidine/alkyl-substituted pyrido[2,3-d]pyrimidine derivatives and evaluated their anticancer activity against the HCT 116, MCF-7, Hep G2, and PC-3 cell lines cell lines. Additionally, we have carried out TS inhibitory activity and in silico studies for compounds 1n and 2j. All the synthesized compounds exhibited good anticancer activity, but among them, compounds 1n and 2j showed excellent anticancer activity, having IC50 values of 1.98 ± 0.69, 2.18 ± 0.93, 4.04 ± 1.06, and 4.18 ± 1.87 µM; and 1.48 ± 0.86, 3.18 ± 0.79, 3.44 ± 1.51, and 5.18 ± 1.85 µM, against the HCT 116, MCF-7, Hep G2, and PC-3 cell lines respectively with control raltitrexed (IC50 1.07 ± 1.08, 1.98 ± 0.72, 1.34 ± 1.0, and 3.09 ± 0.96 µM, respectively) and hTS inhibitory activity with IC50 values of 20.47 ± 1.09 and 13.48 ± 0.96 nM with control raltitrexed (IC50 14.95 ± 1.01 nM). Further, the mechanism of inhibition was revealed by molecular docking, which showed the binding pattern of 1n and 2j to the catalytic site of TS with docking scores of -10.6 and - 9.5 kcal/mol, respectively, with reference raltitrexed (-9.4 kcal/mol). Additionally, the assessment of physicochemical, biochemical, structural, and toxicological characteristics were also in the acceptable range for these compounds. Based on the anticancer activity of compounds, SAR was also performed for lead optimization.
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Affiliation(s)
- Adarsh Kumar
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, 151401, India
| | - Nabeel Backer
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, 151401, India
| | - Harshali Paliwal
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, 151401, India
| | - Ankit Kumar Singh
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, 151401, India
| | - Tanushree Debbaraman
- Rajiv Gandhi Centre for Diabetes & Endocrinology, J N Medical College & Hospital, Aligarh Muslim University, Aligarh, 202002, UP, India
| | - Vikramjeet Singh
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, 125001, HR, India
| | - Pradeep Kumar
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, 151401, India.
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Kaur K, Verma H, Gangwar P, Jangid K, Dhiman M, Kumar V, Jaitak V. Design, synthesis, in silico and biological evaluation of new indole based oxadiazole derivatives targeting estrogen receptor alpha. Bioorg Chem 2024; 147:107341. [PMID: 38593531 DOI: 10.1016/j.bioorg.2024.107341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/01/2024] [Accepted: 04/04/2024] [Indexed: 04/11/2024]
Abstract
A series of new indole-oxadiazole derivatives was designed and synthesized to develop potential anti-breast cancer agents. The compounds exhibited significant inhibitory activity with IC50 values ranging from 1.78 to 19.74 μM against ER-positive human breast cancer (BC) cell lines T-47D and MCF-7. Among them, compounds (5a, 5c, 5e-5h, 5j-5o) displayed superior activity against ER-α dominant (ratio of ER-α/ER-β is 9/1) T-47D cells compared to the standard drug bazedoxifene (IC50 = 12.78 ± 0.92 μM). Compounds 5c and 5o exhibited remarkable anti-proliferative activity with IC50 values of 3.24 ± 0.46 and 1.72 ± 1.67 μM against T-47D cells, respectively. Further, compound 5o manifested 1589-fold higher ER-α binding affinity (213.4 pM) relative to bazedoxifene (339.2 nM) in a competitive ER-α binding assay, while compound 5c showed a binding affinity of 446.6 nM. The Western blot analysis proved that both compounds influenced the ER-α protein's expression, impeding its subsequent transactivation and signalling pathway within T-47D cells. Additionally, a molecular docking study suggests that compounds 5c and 5o bind in such a fashion that induces conformational changes in the protein, culminating in their antagonistic effect. Also, pharmacokinetic profiles showed that all compounds have drug-like properties. Further, molecular dynamic (MD) simulations and density functional theory (DFT) analysis confirmed the stability, conformational behaviour, reactivity, and biological feasibility of compounds 5c and 5o. In conclusion, based on our findings, compounds 5c and 5o, which exhibit significant ER-α antagonistic activity, can act as potential lead compounds for developing anti-breast cancer agents.
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Affiliation(s)
- Kamalpreet Kaur
- Department of Pharmaceutical Sciences and Natural Products. Central University of Punjab, Ghudda, Bathinda (Pb) 151401, India
| | - Harkomal Verma
- Department of Zoology, Central University of Punjab, Ghudda, Bathinda (Pb) 151401, India
| | - Prabhakar Gangwar
- Department of Zoology, Central University of Punjab, Ghudda, Bathinda (Pb) 151401, India
| | - Kailash Jangid
- Department of Chemistry, Central University of Punjab, Ghudda, Bathinda (Pb) 151401, India
| | - Monisha Dhiman
- Department of Microbiology, Central University of Punjab, Ghudda, Bathinda (Pb) 151401, India
| | - Vinod Kumar
- Department of Chemistry, Central University of Punjab, Ghudda, Bathinda (Pb) 151401, India
| | - Vikas Jaitak
- Department of Pharmaceutical Sciences and Natural Products. Central University of Punjab, Ghudda, Bathinda (Pb) 151401, India.
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Kaur K, Verma H, Gangwar P, Dhiman M, Jaitak V. Design, synthesis, in vitro and in silico evaluation of indole-based tetrazole derivatives as putative anti-breast cancer agents. RSC Med Chem 2024; 15:1329-1347. [PMID: 38665833 PMCID: PMC11042173 DOI: 10.1039/d3md00730h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/16/2024] [Indexed: 04/28/2024] Open
Abstract
A series of new indole-tetrazole derivatives were designed and synthesized to develop potential anti-breast cancer agents. The compounds exhibited in vitro anti-proliferative activity against ER-α positive T-47D (IC50 = 3.82-24.43 μM), MCF-7 (IC50 = 3.08-22.65 μM), and ER-α negative MDA-MB-231 (IC50 = 7.69-19.4 μM) human breast cancer cell lines. Compounds 5d and 5f displayed significant anti-proliferative activity compared to bazedoxifene (IC50 = 14.23 ± 0.68 μM), with IC50 values of 10.00 ± 0.59 and 3.83 ± 0.74 μM, respectively, against the ER-α dominant T-47D cell line. Also, both compounds showed non-significant cytotoxicity against normal cells HEK-293. Further, the ER-α binding affinity of 5d and 5f was assessed through a fluorescence polarization-based competitive binding assay, where 5d and 5f have shown significant binding with IC50 = 5.826 and 110.6 nM, respectively, as compared to the standard drug bazedoxifene (IC50 = 339.2 nM). Western blot analysis confirmed that compound 5d reduced ER-α protein expression in T-47D cells, hindering its transactivation and signalling pathways. Additionally, a molecular docking study suggests that compounds 5d and 5f bind in such a fashion that induces conformational changes in the protein, culminating in their antagonistic effect. Pharmacokinetic profiles showed that the compounds possessed drug-like properties. Furthermore, molecular dynamics simulation studies establish the dynamic stability and conformational behaviour of the ER-α protein and ligand complex of both compounds. Additionally, 5d and 5f ensure biological feasibility as per their DFT analysis through HOMO-LUMO energy gap analysis. In conclusion, compounds 5d and 5f, exhibiting significant ER-α antagonistic activity, can act as potential lead compounds for anti-breast cancer therapies.
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Affiliation(s)
- Kamalpreet Kaur
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab Ghudda Bathinda (Pb) 151401 India
| | - Harkomal Verma
- Department of Zoology, Central University of Punjab Ghudda Bathinda (Pb) 151401 India
| | - Prabhakar Gangwar
- Department of Zoology, Central University of Punjab Ghudda Bathinda (Pb) 151401 India
| | - Monisha Dhiman
- Department of Microbiology, Central University of Punjab Ghudda Bathinda (Pb) 151401 India
| | - Vikas Jaitak
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab Ghudda Bathinda (Pb) 151401 India
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Kaur S, Garg N, Rubal R, Dhiman M. Correlative study on heavy metal-induced oxidative stress and hypertension among the rural population of Malwa Region of Punjab, India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:90948-90963. [PMID: 35881282 DOI: 10.1007/s11356-022-20850-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Heavy metal-induced toxicity contributes to the progression of various metabolic disorders and possible mechanisms involved in disease progression are not well established. In this study, the correlation of heavy metal exposure and hypertension have been demonstrated. The results showed that in hypertensive subjects, the lipid profiles (triglycerides, LDL-C, HDL-C, and total cholesterol) and cardiac markers (CK-MB and LDH) were altered abruptly. As a consequence of heavy- induced oxidative stress, the oxidants (TBARS and protein carbonyls) and antioxidants (SOD, GSH, and TAC) were significantly increased and decreased, respectively in hypertension subjects. The concentrations of heavy metals (Pb, Cd, and As) exceeded the permissible limits in hypertensive subjects. The Nrf-2 genotyping indicated that heavy metals may induce mutations at molecular level. The results of correlation analysis revealed that the heavy metals interact with cellular components and interfere with metabolic processes which then results in disturbed lipid profile, enhanced oxidative stress, and reduced antioxidant status. The current study systematically estimated the association of hair and nail heavy metal concentrations with hypertension among the population residing in the Malwa region of Punjab. The proposed study highlighted that heavy metals act as a silent risk factor in the hypertension progression in the population of Malwa region. Future studies are required to confirm current findings and further scrutinize the effect of heavy metals exposure in early adulthood, early, and late mid-life to develop metabolic complications such as hypertension.
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Affiliation(s)
- Sukhchain Kaur
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Neha Garg
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Rubal Rubal
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Monisha Dhiman
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Bathinda, Punjab, India.
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Choudhuri S, Garg NJ. Platelets, Macrophages, and Thromboinflammation in Chagas Disease. J Inflamm Res 2022; 15:5689-5706. [PMID: 36217453 PMCID: PMC9547606 DOI: 10.2147/jir.s380896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 08/24/2022] [Indexed: 11/23/2022] Open
Abstract
Chagas disease (CD) is a major health problem in the Americas and an emerging health problem in Europe and other nonendemic countries. Several studies have documented persistence of the protozoan parasite Trypanosoma cruzi, and oxidative and inflammatory stress are major pathogenic factor. Mural and cardiac thrombi, cardiac arrhythmias, and cardiomyopathy are major clinical features of CD. During T. cruzi infection, parasite-released factors induce endothelial dysfunction along with platelet (PLT) and immune-cell activation. PLTs have a fundamental role in maintaining hemostasis and preventing bleeding after vascular injury. Excessive activation of PLTs and coagulation cascade can result in thrombosis and thromboembolic events, which are recognized to occur in seropositive individuals in early stages of CD when clinically symptomatic heart disease is not apparent. Several host and parasite factors have been identified to signal hypercoagulability and increase the risk of ischemic stroke in early phases of CD. Further, PLT interaction with immune cells and their role in host defense against pathogens and inflammatory processes have only recently been recognized and evolving. In the context of parasitic diseases, PLTs function in directly responding to T. cruzi infection, and PLT interactions with immune cells in shaping the proinflammatory or immunoregulatory function of monocytes, macrophages, and neutrophils remains elusive. How T. cruzi infection alters systemic microenvironment conditions to influence PLT and immune-cell interactions is not understood. In this review, we discuss the current literature, and extrapolate the mechanistic situations to explain how PLT and innate immune cell (especially monocytes and macrophages) interactions might be sustaining hypercoagulability and thromboinflammation in chronic CD.
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Affiliation(s)
- Subhadip Choudhuri
- Department of Microbiology and Immunology, Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX, USA
| | - Nisha J Garg
- Department of Microbiology and Immunology, Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX, USA
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Jovasevic V, Zhang H, Sananbenesi F, Guedea AL, Soman KV, Wiktorowicz JE, Fischer A, Radulovic J. Primary cilia are required for the persistence of memory and stabilization of perineuronal nets. iScience 2021; 24:102617. [PMID: 34142063 PMCID: PMC8185192 DOI: 10.1016/j.isci.2021.102617] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 04/02/2021] [Accepted: 05/19/2021] [Indexed: 01/11/2023] Open
Abstract
It is well established that the formation of episodic memories requires multiple hippocampal mechanisms operating on different time scales. Early mechanisms of memory formation (synaptic consolidation) have been extensively characterized. However, delayed mechanisms, which maintain hippocampal activity as memories stabilize in cortical circuits, are not well understood. Here we demonstrate that contrary to the transient expression of early- and delayed-response genes, the expression of cytoskeleton- and extracellular matrix-associated genes remains dynamic even at remote time points. The most profound expression changes clustered around primary cilium-associated and collagen genes. These genes most likely contribute to memory by stabilizing perineuronal nets in the dorsohippocampal CA1 subfield, as revealed by targeted disruptions of the primary cilium or perineuronal nets. The findings show that nonsynaptic, primary cilium-mediated mechanisms are required for the persistence of context memory.
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Affiliation(s)
- Vladimir Jovasevic
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Room 13-100, Montgomery Ward Memorial Building, Chicago, IL 60611, USA
| | - Hui Zhang
- Department of Neuroscience and Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, Rose F. Kennedy Center, 1410 Pelham Parkway South, Room 115, Bronx, NY 10461, USA
| | | | - Anita L. Guedea
- Department of Psychiatry and Behavioral Sciences, Northwestern University, Chicago, IL 60611, USA
| | - Kizhake V. Soman
- Division of Infectious Disease, Department of Internal Medicine, UTMB – Galveston, Galveston, TX 77555, USA
| | | | - Andre Fischer
- German Center for Neurodegenerative Diseases, Göttingen 37075, Germany
| | - Jelena Radulovic
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Room 13-100, Montgomery Ward Memorial Building, Chicago, IL 60611, USA
- Department of Neuroscience and Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, Rose F. Kennedy Center, 1410 Pelham Parkway South, Room 115, Bronx, NY 10461, USA
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Functional Autoreactive Anti-β2 Adrenergic Antibodies May Contribute to Insulin Resistance Profile in Patients with Chronic Chagas Disease. Pathogens 2021; 10:pathogens10030378. [PMID: 33801107 PMCID: PMC8004215 DOI: 10.3390/pathogens10030378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 12/05/2022] Open
Abstract
Potential activation of β2 adrenergic receptors (β2AR) by specific autoreactive antibodies (Abs) that arise during the host reaction to Trypanosoma cruzi, could contribute to the elevated prevalence of metabolic disturbances described in patients with chronic Chagas disease (CCD). This study aimed to determine the prevalence of anti-β2AR Abs in patients with CCD, as well as the correlation of these Abs with the presence of glucose and lipid metabolism disturbances, in order to explore their association with an insulin resistance profile. Additionally, we tested the functional effects of anti-β2AR Abs employing an in vitro bioassay with neuroendocrine cells expressing β2AR. A clinical and metabolic evaluation including an OGTT was performed in 80 CCD patients and 40 controls. Anti-β2AR Abs were measured by an in-house-developed ELISA, and the β2 adrenergic activity of affinity-purified IgG fractions from patient’ sera were assayed in CRE-Luc and POMCLuc transfected AtT-20 cells. A higher proportion of dysglycemia (72.5% vs. 37.5%; p = 0.001) was observed in the CCD group, accompanied by increased HOMA2-IR (p = 0.019), especially in subjects with Abs (+). Anti-β2AR Abs reactivity (7.01 (2.39–20.5); p = 0.0004) and age >50 years (3.83 (1.30–11.25); p = 0.014) resulted as relevant for IR prediction (AUC: 0.786). Concordantly, Abs (+) CCD patients showed elevated metabolic risk scores and an increased prevalence of atherogenic dyslipidemia (p = 0.040), as compared to Abs (−) patients and controls. On functional bioassays, Abs exerted specific and dose-dependent β2-agonist effects. Our findings suggest that anti-β2AR Abs may induce the activation of β2AR in other tissues besides the heart; furthermore, we show that in patients with CCD these Abs are associated with an insulin resistance profile and atherogenic dyslipidemia, providing biological plausibility to the hypothesis that adrenergic activation by anti-β2AR Abs could contribute to the pathogenesis of metabolic disturbances described in CCD patients, increasing their cardiovascular risk.
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Kaur M, Gupta KB, Thakur S, Kaur S, Dhiman M. Parthenium hysterophorus mediated inflammation and hyper-responsiveness via NF-κB pathway in human A549 lung cancer cell line. ENVIRONMENTAL TOXICOLOGY 2020; 35:1241-1250. [PMID: 32686900 DOI: 10.1002/tox.22989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/31/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
Being one of the notorious weed P. hysterophorus has invaded almost every part India and is the lead cause of skin allergies and severe dermatitis among farmers and rural population. It is an invasive obnoxious weed capable of surviving extreme environmental conditions and various parts of this plant are reported to cause severe contact allergies in humans due to the presence of high concentrations of toxic sesquiterpene lactones viz. parthenin. It can stimulate numerous cellular and immune responses that may translate into Oxidative stress, allergies, and inflammation. The effect of P. hysterophorus flower extract was evaluated on cell viability, oxidative stress and inflammation in A549 lung cancer cell line by spectrophotometric and reverse transcriptase-polymerase chain reaction methods. Schrodinger software based docking was performed for possible interactions studies. The A549 cells treated with P. hysterophorus flower extract favors increase in cell viability, reactive oxygen species generation. The mRNA expression of proinflammatory cytokines such as IFN-γ, TNF-α, and IL-1β was significantly increased whereas no change in IL-18 expression was observed. Significant increase in protein expression of NF-κB was observed, suggesting the role of NF-κB signalling in allergic responses. The docking studies demonstrated the potential interaction between Parthenin and NF-κB/IL-1β/IL-18 suggesting their activation leading to inflammation. The current study emphasize that P. hysterophorus mediates oxidative stress, and inflammatory process via alterations in expression of proinflammatory cytokines such as IL-1β, IFN-γ through NF-κB activation which was also confirmed in docking studies. Cellular and molecular mechanisms involved in pathogenesis of allergic/chronic inflammation and severe dermatitis need to be further investigated to identify specific binding partners responsible for severe inflammation which can provide some leads in developing effective targets against severe dermatitis and skin allergies.
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Affiliation(s)
- Mandeep Kaur
- Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, India
| | - Kunj Bihari Gupta
- Department of Microbiology, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, India
| | - Shweta Thakur
- Department of Zoology, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, India
| | - Sukhchain Kaur
- Department of Microbiology, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, India
| | - Monisha Dhiman
- Department of Microbiology, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, India
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Caballero EP, Mariz-Ponte N, Rigazio CS, Santamaría MH, Corral RS. Honokiol attenuates oxidative stress-dependent heart dysfunction in chronic Chagas disease by targeting AMPK / NFE2L2 / SIRT3 signaling pathway. Free Radic Biol Med 2020; 156:113-124. [PMID: 32540353 DOI: 10.1016/j.freeradbiomed.2020.05.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/11/2020] [Accepted: 05/26/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Eugenia Pérez Caballero
- Laboratorio de Biología Experimental, Centro de Estudios Metabólicos, Santander, 39005, Spain
| | - Nilo Mariz-Ponte
- Instituto de Investigação Biomédica, Universidade de Coimbra, Coimbra, 3004517, Portugal
| | - Cristina S Rigazio
- Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas (IMIPP, CONICET-GCBA), Servicio de Parasitología-Chagas, Hospital de Niños "Dr. Ricardo Gutiérrez", Buenos Aires, 1425, Argentina
| | - Miguel H Santamaría
- Laboratorio de Biología Experimental, Centro de Estudios Metabólicos, Santander, 39005, Spain
| | - Ricardo S Corral
- Instituto Multidisciplinario de Investigaciones en Patologías Pediátricas (IMIPP, CONICET-GCBA), Servicio de Parasitología-Chagas, Hospital de Niños "Dr. Ricardo Gutiérrez", Buenos Aires, 1425, Argentina.
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Zhou N, Chen X, Xi J, Ma B, Leimena C, Stoll S, Qin G, Wang C, Qiu H. Genomic characterization reveals novel mechanisms underlying the valosin-containing protein-mediated cardiac protection against heart failure. Redox Biol 2020; 36:101662. [PMID: 32795937 PMCID: PMC7426568 DOI: 10.1016/j.redox.2020.101662] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/20/2020] [Accepted: 07/26/2020] [Indexed: 12/22/2022] Open
Abstract
Chronic hypertension is a key risk factor for heart failure. However, the underlying molecular mechanisms are not fully understood. Our previous studies found that the valosin-containing protein (VCP), an ATPase-associated protein, was significantly decreased in the hypertensive heart tissues. In this study, we tested the hypothesis that restoration of VCP protected the heart against pressure overload-induced heart failure. With a cardiac-specific transgenic (TG) mouse model, we showed that a moderate increase of VCP was able to attenuate chronic pressure overload-induced maladaptive cardiac hypertrophy and dysfunction. RNA sequencing and a comprehensive bioinformatic analysis further demonstrated that overexpression of VCP in the heart normalized the pressure overload-stimulated hypertrophic signals and repressed the stress-induced inflammatory response. In addition, VCP overexpression promoted cell survival by enhancing the mitochondria resistance to the oxidative stress via activating the Rictor-mediated-gene networks. VCP was also found to be involved in the regulation of the alternative splicing and differential isoform expression for some genes that are related to ATP production and protein synthesis by interacting with long no-coding RNAs and histone deacetylases, indicating a novel epigenetic regulation of VCP in integrating coding and noncoding genomic network in the stressed heart. In summary, our study demonstrated that the rescuing of a deficient VCP in the heart could prevent pressure overload-induced heart failure by rectifying cardiac hypertrophic and inflammatory signaling and enhancing the cardiac resistance to oxidative stress, which brought in novel insights into the understanding of the mechanism of VCP in protecting patients from hypertensive heart failure. Deficiency of VCP contributes to the pathogenesis of hypertensive heart failure. Rescue of VCP prevents stress-induced cardiac remodeling and cell death. VCP attenuates stress-induced inflammatory and hypertrophic signaling. VCP promotes cardiac resistance to oxidative stress. VCP mediates a novel epigenetic integrating regulation in the stressed heart.
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Affiliation(s)
- Ning Zhou
- Division of Physiology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA; Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China
| | - Xin Chen
- Center for Genomics & Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Jing Xi
- Division of Physiology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Ben Ma
- Division of Physiology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA; Center of Molecular and Translational Medicine, Institution of Biomedical Science, Georgia State University, Atlanta, GA, 30303, USA
| | - Christiana Leimena
- Division of Physiology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Shaunrick Stoll
- Division of Physiology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA
| | - Gangjian Qin
- Department of Biomedical Engineering, School of Medicine and School of Engineering, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Charles Wang
- Center for Genomics & Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA.
| | - Hongyu Qiu
- Division of Physiology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, 92350, USA; Center of Molecular and Translational Medicine, Institution of Biomedical Science, Georgia State University, Atlanta, GA, 30303, USA.
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Rios L, Campos EE, Menon R, Zago MP, Garg NJ. Epidemiology and pathogenesis of maternal-fetal transmission of Trypanosoma cruzi and a case for vaccine development against congenital Chagas disease. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165591. [PMID: 31678160 PMCID: PMC6954953 DOI: 10.1016/j.bbadis.2019.165591] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/12/2019] [Accepted: 09/25/2019] [Indexed: 12/11/2022]
Abstract
Trypanos o ma cruzi (T. cruzi or Tc) is the causative agent of Chagas disease (CD). It is common for patients to suffer from non-specific symptoms or be clinically asymptomatic with acute and chronic conditions acquired through various routes of transmission. The expecting women and their fetuses are vulnerable to congenital transmission of Tc. Pregnant women face formidable health challenges because the frontline antiparasitic drugs, benznidazole and nifurtimox, are contraindicated during pregnancy. However, it is worthwhile to highlight that newborns can be cured if they are diagnosed and given treatment in a timely manner. In this review, we discuss the pathogenesis of maternal-fetal transmission of Tc and provide a justification for the investment in the development of vaccines against congenital CD.
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Affiliation(s)
- Lizette Rios
- Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - E Emanuel Campos
- Instituto de Patología Experimental, Universidad Nacional de Salta - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Salta, Argentina
| | - Ramkumar Menon
- Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, TX, USA
| | - M Paola Zago
- Instituto de Patología Experimental, Universidad Nacional de Salta - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Salta, Argentina.
| | - Nisha J Garg
- Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX, USA; Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX, USA.
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Rios LE, Vázquez-Chagoyán JC, Pacheco AO, Zago MP, Garg NJ. Immunity and vaccine development efforts against Trypanosoma cruzi. Acta Trop 2019; 200:105168. [PMID: 31513763 PMCID: PMC7409534 DOI: 10.1016/j.actatropica.2019.105168] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/27/2019] [Accepted: 09/07/2019] [Indexed: 12/28/2022]
Abstract
Trypanosoma cruzi (T. cruzi) is the causative agent for Chagas disease (CD). There is a critical lack of methods for prevention of infection or treatment of acute infection and chronic disease. Studies in experimental models have suggested that the protective immunity against T. cruzi infection requires the elicitation of Th1 cytokines, lytic antibodies and the concerted activities of macrophages, T helper cells, and cytotoxic T lymphocytes (CTLs). In this review, we summarize the research efforts in vaccine development to date and the challenges faced in achieving an efficient prophylactic or therapeutic vaccine against human CD.
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Affiliation(s)
- Lizette E Rios
- Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77555-1070, USA
| | - Juan Carlos Vázquez-Chagoyán
- Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca, México
| | - Antonio Ortega Pacheco
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
| | - M Paola Zago
- Instituto de Patología Experimental, Universidad Nacional de Salta - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Salta, Argentina
| | - Nisha J Garg
- Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77555-1070, USA; Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX.
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Integrated Functional Analysis of the Nuclear Proteome of Classically and Alternatively Activated Macrophages. Mediators Inflamm 2019; 2019:3481430. [PMID: 31182931 PMCID: PMC6515079 DOI: 10.1155/2019/3481430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 12/31/2018] [Accepted: 03/06/2019] [Indexed: 02/03/2023] Open
Abstract
Macrophages (Mφ) play a central role in coordinating host response to pathogens, cellular injury, and environmental stimuli. Herein, we report multidimensional, nuclear proteomic analyses of protein expression and posttranslational modifications (PTMs) that control biological processes during Mφ activation. For this, Mφ were incubated with IFN-γ/LPS and IL-4, and their differentiation to proinflammatory (M1) and anti-inflammatory (M2a, referred as M2 for simplicity throughtout the manuscript) phenotypes was confirmed by detection of CD64 and CD206 surface markers and TNF-α, arginase I, and iNOS-dependent nitrite levels. We used a sequential method of organellar enrichment and labeling of nuclear fractions with BODIPY FL-maleimide fluorescence dye followed by two-dimensional electrophoresis (2DE) to capture quantitative changes in abundance and S-nitrosylated (SNO) proteome signatures. Exact same gels were then labeled with Pro-Q Diamond to detect protein phosphorylation. MALDI-TOF/TOF MS analysis of the protein spots with fold change of ≥|1.5| in any of the groups yielded 229 identifications. We found that 145, 78, and 173 protein spots in M1 Mφ and 105, 81, and 164 protein spots in M2 Mφ were changed in abundance, S-nitrosylation, and phosphorylation, respectively, with respect to M0 controls (fold change: ≥|1.5|, p ≤ 0.05). Targeted analysis by immunoprecipitation and Western blotting was performed to verify the differential abundance and phosphorylation levels of two of the proteins in M1 and M2 (vs. M0) Mφ. Ingenuity Pathway Analysis of the nuclear proteome datasets showed that the abundance and posttranslational (SNO and Phosphor) modifications of the proteins predicted to be involved in cytoskeletal organization/cell movement, phagocytosis/endocytosis, and cell proliferation/cell death were differentially regulated with proinflammatory and anti-inflammatory activation of Mφ.
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Zago MP, Wiktorowicz JE, Spratt H, Koo SJ, Barrientos N, Nuñez Burgos A, Nuñez Burgos J, Iñiguez F, Botelli V, Leon de la Fuente R, Garg NJ. Potential Utility of Protein Targets of Cysteine-S-Nitrosylation in Identifying Clinical Disease Status in Human Chagas Disease. Front Microbiol 2019; 9:3320. [PMID: 30697201 PMCID: PMC6340995 DOI: 10.3389/fmicb.2018.03320] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 12/20/2018] [Indexed: 01/24/2023] Open
Abstract
Trypanosoma cruzi (Tc) infection causes Chagas disease (ChD) presented by dilated cardiomyopathy and heart failure. During infection, oxidative and nitrosative stresses are elicited by the immune cells for control the pathogen; however, excess nitric oxide and superoxide production can result in cysteine S-nitrosylation (SNO) of host proteins that affects cellular homeostasis and may contribute to disease development. To identify the proteins with changes in SNO modification levels as a hallmark of ChD, we obtained peripheral blood mononuclear cells (PBMC) from seronegative, normal healthy (NH, n = 30) subjects, and from seropositive clinically asymptomatic (ChD CA, n = 25) or clinically symptomatic (ChD CS, n = 28) ChD patients. All samples were treated (Asc+) or not-treated (Asc−) with ascorbate (reduces nitrosylated thiols), labeled with the thiol-labeling BODIPY FL-maleimide dye, resolved by two-dimensional electrophoresis (total 166 gels), and the protein spots that yielded significant differences in abundance or SNO level at p-value of ≤ 0.05t−test/Welch/BH were identified by MALDI-TOF/TOF MS or OrbiTrap LC-MS/MS. Targeted analysis of a new cohort of PBMC samples (n = 10–14/group) was conducted to verify the differential abundance/SNO levels of two of the proteins in ChD (vs. NH) subjects. The multivariate adaptive regression splines (MARS) modeling, comparing differences in relative SNO level (Asc−/Asc+ ratio) of the protein spots between any two groups yielded SNO biomarkers that exhibited ≥90% prediction success in classifying ChD CA (582-KRT1 and 884-TPM3) and ChD CS (426-PNP, 582-KRT1, 486-ALB, 662-ACTB) patients from NH controls. Ingenuity Pathway Analysis (IPA) of the SNO proteome dataset normalized to changes in protein abundance suggested the proteins belonging to the signaling networks of cell death and the recruitment and migration of immune cells were most affected in ChD CA and ChD CS (vs. NH) subjects. We propose that SNO modification of the select panel of proteins identified in this study have the potential to identify ChD severity in seropositive individuals exposed to Tc infection.
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Affiliation(s)
- Maria Paola Zago
- Instituto de Patología Experimental, CONICET-UNSa, Salta, Argentina
| | - John E Wiktorowicz
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch (UTMB), Galveston, TX, United States.,Institute for Human Infections and Immunity, University of Texas Medical Branch (UTMB), Galveston, TX, United States
| | - Heidi Spratt
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch (UTMB), Galveston, TX, United States
| | - Sue-Jie Koo
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX, United States
| | | | - Aida Nuñez Burgos
- Servicio de Cardiología, Programa de Medicina Interna, Hospital Papa Francisco, Salta, Argentina
| | - Julio Nuñez Burgos
- Servicio de Cardiología, Programa de Medicina Interna, Hospital Papa Francisco, Salta, Argentina
| | - Facundo Iñiguez
- Servicio de Cardiología, Hospital San Bernardo, Salta, Argentina
| | | | | | - Nisha Jain Garg
- Institute for Human Infections and Immunity, University of Texas Medical Branch (UTMB), Galveston, TX, United States.,Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX, United States.,Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, TX, United States
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Bonney KM, Luthringer DJ, Kim SA, Garg NJ, Engman DM. Pathology and Pathogenesis of Chagas Heart Disease. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2018; 14:421-447. [PMID: 30355152 DOI: 10.1146/annurev-pathol-020117-043711] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chagas heart disease is an inflammatory cardiomyopathy that develops in approximately one-third of people infected with the protozoan parasite Trypanosoma cruzi. One way T. cruzi is transmitted to people is through contact with infected kissing bugs, which are found in much of the Western Hemisphere, including in vast areas of the United States. The epidemiology of T. cruzi and Chagas heart disease and the varied mechanisms leading to myocyte destruction, mononuclear cell infiltration, fibrosis, and edema in the heart have been extensively studied by hundreds of scientists for more than 100 years. Despite this wealth of knowledge, it is still impossible to predict what will happen in an individual infected with T. cruzi because of the tremendous variability in clonal parasite virulence and human susceptibility to infection and the lack of definitive molecular predictors of outcome from either side of the host-parasite equation. Further, while several distinct mechanisms of pathogenesis have been studied in isolation, it is certain that multiple coincident mechanisms combine to determine the ultimate outcome. For these reasons, Chagas disease is best considered a collection of related but distinct illnesses. This review highlights the pathology and pathogenesis of the most common adverse sequela of T. cruzi infection-Chagas heart disease-and concludes with a discussion of key unanswered questions and a view to the future.
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Affiliation(s)
- Kevin M Bonney
- Liberal Studies, Faculty of Arts and Sciences, New York University, New York, NY 10003, USA;
| | - Daniel J Luthringer
- Department of Pathology and Laboratory Medicine and Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, USA; , ,
| | - Stacey A Kim
- Department of Pathology and Laboratory Medicine and Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, USA; , ,
| | - Nisha J Garg
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas 77555-1070, USA;
| | - David M Engman
- Department of Pathology and Laboratory Medicine and Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, USA; , ,
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Singla R, Prakash K, Bihari Gupta K, Upadhyay S, Dhiman M, Jaitak V. Identification of novel indole based heterocycles as selective estrogen receptor modulator. Bioorg Chem 2018; 79:72-88. [DOI: 10.1016/j.bioorg.2018.04.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/04/2018] [Accepted: 04/06/2018] [Indexed: 12/16/2022]
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18
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Cholia RP, Dhiman M, Kumar R, Mantha AK. Oxidative stress stimulates invasive potential in rat C6 and human U-87 MG glioblastoma cells via activation and cross-talk between PKM2, ENPP2 and APE1 enzymes. Metab Brain Dis 2018; 33:1307-1326. [PMID: 29721771 DOI: 10.1007/s11011-018-0233-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 04/06/2018] [Indexed: 12/21/2022]
Abstract
Maintaining genomic integrity is essential for cell survival and viability. Reactive oxygen species (ROS) overproduction results in oxidative stress leading to the genomic instability via generation of small base lesions in DNA and these unrepaired DNA damages lead to various cellular consequences including cancer. Recent data support the concept "oxidative stress is an indispensable participant in fostering proliferation, survival, and migration" in various cancer cell types including glioblastoma cells. In this study we demonstrate that treatment of non-cytotoxic doses of oxidants such as amyloid beta [Aβ(25-35)] peptide, glucose oxidase (GO), and hydrogen peroxide (H2O2) for 24 h and 48 h time points found to increase the expression level and activity of a multifunctional enzyme Apurinic/apyrimidinic endonuclease (APE1), a key enzyme of base excision repair (BER) pathway which takes care of base damages; and also resulted in modulation in the expression levels of downstream BER-pathway enzymes viz. PARP-1, XRCC1, DNA polβ, and ligase IIIα was observed upon oxidative stress in C6 and U-87 MG cells. Oxidants treatment to the C6 and U-87 MG cells also resulted in an elevation in the intracellular expression of glycolytic pathway enzyme Pyruvate kinase M2 (PKM2) and the metastasis inducer protein Ectonucleotide pyrophosphatase/phosphodiesterase 2 (ENPP2) as analyzed using Western blotting and Immunofluorescence microscopic studies. Our study also reports that oxidative stress induced for 24 h and 48 h in C6 and U-87 MG cells resulted in extracellular secretion of APE1 and ENPP2 as analyzed using Western blotting in conditioned media. However, the biological significance of extracellular secreted APE1 remains elusive. Oxidative stress also elevated the ENPP2's LysoPLD activity in conditioned media of C6 and U-87 MG cells. Our results also demonstrate that oxidative stress affects the expression level and localization of APE1, PKM2, and ENPP2 in C6 and U-87 MG cells. As evidenced by the colocalization pattern at 24 h and 48 h time points, it can be attributed that oxidative stress mediates crosstalk between APE1, PKM2, and ENPP2. In addition, when C6 and U-87 MG cells were treated with lysophosphatidic acid (LPA), a bioactive lipid that negatively regulates ENPP2's LysoPLD activity at 10 μM concentration, demonstrated strong migratory potential in C6 and U-87 MG cells, and also induced migration upon oxidative stress. Altogether, the findings demonstrate the potential of C6 and U-87 MG cells to utilize three proteins viz. APE1, PKM2, and ENPP2 towards migration and survival of gliomas. Thus the knowledge on oxidative stress induced APE1's interaction with PKM2 and ENPP2 opens a new channel for the therapeutic target(s) for gliomas.
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Affiliation(s)
- Ravi P Cholia
- Department of Animal Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, 151 001, India
| | - Monisha Dhiman
- Department of Biochemistry and Microbial Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Raj Kumar
- Department of Pharmaceutical Sciences and Natural Products, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Anil K Mantha
- Department of Animal Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, 151 001, India.
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Wen JJ, Garg NJ. Manganese superoxide dismutase deficiency exacerbates the mitochondrial ROS production and oxidative damage in Chagas disease. PLoS Negl Trop Dis 2018; 12:e0006687. [PMID: 30044789 PMCID: PMC6078326 DOI: 10.1371/journal.pntd.0006687] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 08/06/2018] [Accepted: 07/13/2018] [Indexed: 02/04/2023] Open
Abstract
In this study, we have investigated the effects of manganese superoxide dismutase (SOD2 or MnSOD) deficiency on mitochondrial function and oxidative stress during Chagas disease. For this, C57BL/6 wild type (WT) and MnSOD+/- mice were infected with Trypanosoma cruzi (Tc), and evaluated at 150 days’ post-infection that corresponded to chronic disease phase. Genetic deletion of SOD2 decreased the expression and activity of MnSOD, but it had no effect on the expression of other members of the SOD family. The myocardial expression and activity of MnSOD were significantly decreased in chronically infected WT mice, and it was further worsened in MnSOD+/- mice. Chronic T. cruzi infection led to a decline in mitochondrial complex I and complex II driven, ADP-coupled respiration and ATP synthesis in the myocardium of WT mice. The baseline oxidative phosphorylation (OXPHOS) capacity in MnSOD+/- mice was decreased, and it had an additive effect on mitochondrial dysregulation of ATP synthesis capacity in chagasic myocardium. Further, MnSOD deficiency exacerbated the mitochondrial rate of reactive oxygen species (ROS) production and myocardial oxidative stress (H2O2, protein carbonyls, malondialdehyde, and 4-hydroxynonenal) in Chagas disease. Peripheral and myocardial parasite burden and inflammatory response (myeloperoxidase, IL-6, lactate dehydrogenase, inflammatory infiltrate) were increased in all chagasic WT and MnSOD+/- mice. We conclude that MnSOD deficiency exacerbates the loss in mitochondrial function and OXPHOS capacity and enhances the myocardial oxidative damage in chagasic cardiomyopathy. Mitochondria targeted, small molecule mitigators of MnSOD deficiency will offer potential benefits in averting the mitochondrial dysfunction and chronic oxidative stress in Chagas disease. Infection by Trypanosoma cruzi parasitic protozoan remains endemic in Latin America. After acute parasitemia phase is controlled by host immune system, infected individuals remain clinically silent but manifest a number of micro and macro cardiac injuries for several years. Eventually many of the infected individuals develop chronic cardiomyopathy that leads to heart failure and sudden death. Cardiac muscle cells are rich in mitochondria and manganese superoxide dismutase (MnSOD) is the chief superoxide scavenging enzyme in the mitochondria. In this study, we show that a deficiency of MnSOD exacerbates the T. cruzi induced mitochondrial dysfunction of the electron transport chain and energy production in the heart. Further, MnSOD deficiency resulted in increased mitochondrial release of oxidants and caused excessive oxidative damage in the chagasic heart. Our results suggest that small molecule agonists of MnSOD will have potential utility as adjuvant therapy in preventing the development of chronic Chagas disease in infected individuals.
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Affiliation(s)
- Jake J. Wen
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Nisha Jain Garg
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
- Department of Pathology, UTMB, Galveston, Texas, United States of America
- Institute for Human Infections and Immunity, UTMB, Galveston, Texas, United States of America
- * E-mail:
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Hydrogen peroxide-induced oxidative stress and its impact on innate immune responses in lung carcinoma A549 cells. Mol Cell Biochem 2018; 450:135-147. [DOI: 10.1007/s11010-018-3380-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 06/11/2018] [Indexed: 02/07/2023]
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21
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Inflammatory response of gliadin protein isolated from various wheat varieties on human intestinal cell line. J Cereal Sci 2018. [DOI: 10.1016/j.jcs.2018.03.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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22
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Abstract
The activation of macrophage respiratory burst in response to infection with Trypanosoma cruzi inflicts oxidative damage to the host’s tissues. For decades, the role of reactive oxygen species (ROS) in the elimination of T. cruzi was taken for granted, but recent evidence suggests parasite growth is stimulated in oxidative environments. It is still a matter of debate whether indeed oxidative environments provide ideal conditions (e.g., iron availability in macrophages) for T. cruzi growth and whether indeed ROS signals directly to stimulate growth. Nitric oxide (NO) and ROS combine to form peroxynitrite, participating in the killing of phagocytosed parasites by activated macrophages. In response to infection, mitochondrial ROS are produced by cardiomyocytes. They contribute to oxidative damage that persists at the chronic stage of infection and is involved in functional impairment of the heart. In this review, we discuss how oxidative stress helps parasite growth during the acute stage and how it participates in the development of cardiomyopathy at the chronic stage.
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Lopez M, Tanowitz HB, Garg NJ. Pathogenesis of Chronic Chagas Disease: Macrophages, Mitochondria, and Oxidative Stress. CURRENT CLINICAL MICROBIOLOGY REPORTS 2018; 5:45-54. [PMID: 29868332 PMCID: PMC5983038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE OF REVIEW Trypanosoma cruzi is the causative agent of Chagas disease. Decades after initial infection, ~30% of individuals can develop chronic chagasic cardiomyopathy. There are several proposed mechanisms for pathogenesis of Chagas disease, including parasite persistence, immune responses against parasite or self that continue in the heart, vascular compromise, and involvement of autonomous and central nervous system. Herein, we will focus on the significance of macrophages, mitochondrial dysfunction, and oxidative stress in progression of chagasic cardiomyopathy. RECENT FINDINGS The current literature suggests that T. cruzi prevents cytotoxic activities of the innate immune cells and persists in the host, contributing to mitochondrial oxidative stress. We discuss how the neoantigens generated due to cellular oxidative damage contribute to chronic inflammatory stress in chagasic disease. SUMMARY We propose that metabolic regulators, PARP-1/SIRT1, determine the disease outcome by modulating the mitochondrial and macrophage stress and antioxidant/oxidant imbalance, and offer a potential new therapy against chronic Chagas disease.
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Affiliation(s)
- Marcos Lopez
- Translational Biomedical Research Group, Fundación Cardiovascular de Colombia, Floridablanca, Colombia and Graduate Program in Biomedical Sciencies, Faculty of Health, Universidad del Valle, Cali, Colombia
| | - Herbert B Tanowitz
- Departments of Pathology and Medicine, Albert Einstein College of Medicine, Bronx, New York
| | - Nisha J Garg
- Departments of Microbiology and Immunology and Pathology, Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas 77555-1070
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Singla R, Gupta KB, Upadhyay S, Dhiman M, Jaitak V. Design, synthesis and biological evaluation of novel indole-benzimidazole hybrids targeting estrogen receptor alpha (ER-α). Eur J Med Chem 2018; 146:206-219. [PMID: 29407951 DOI: 10.1016/j.ejmech.2018.01.051] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 01/06/2023]
Abstract
In the course of efforts to develop novel selective estrogen receptor modulators (SERMs), indole-benzimidazole hybrids were designed and synthesised by fusing the indole nucleus with benzimidazole. All the compounds were first inspected for anti-proliferative activity using ER-α responsive T47D breast cancer cell lines and ER-α binding assay. From this study, two representative bromo substituted compounds 5f and 8f were found to be most active and thus were escalated for gene expression studies for targeting ER-α. Cell imaging experiment clearly suggest that compounds were able to cross cell membrane and accumulate thus causing cytotoxicity. RT-PCR and Western blotting experiments further supported that both compounds altered the expression of mRNA and receptor protein of ER-α, thereby preventing the further transactivation and signalling pathway in T47D cells lines. Structural investigation from induced fit simulation study suggest that compound 5f and 8f bind in antagonistic conformation similar to bazedoxifene by extensive hydrogen bonding and Van der Waals forces. All these results strongly indicate that compound 5f and 8f represents a novel potent ER-α antagonist properties and will proved promising in the discovery of SERM for the management of breast cancer.
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Affiliation(s)
- Ramit Singla
- Centre for Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, India
| | - Kunj Bihari Gupta
- Centre for Biochemistry and Microbial Sciences, Central University of Punjab, Bathinda, India
| | - Shishir Upadhyay
- Centre for Animal Sciences, Central University of Punjab, Bathinda, India
| | - Monisha Dhiman
- Centre for Biochemistry and Microbial Sciences, Central University of Punjab, Bathinda, India
| | - Vikas Jaitak
- Centre for Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, India.
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Lopez M, Tanowitz HB, Garg NJ. Pathogenesis of Chronic Chagas Disease: Macrophages, Mitochondria, and Oxidative Stress. CURRENT CLINICAL MICROBIOLOGY REPORTS 2018. [DOI: 10.1007/s40588-018-0081-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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26
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Design, synthesis and biological evaluation of novel indole-xanthendione hybrids as selective estrogen receptor modulators. Bioorg Med Chem 2017; 26:266-277. [PMID: 29198894 DOI: 10.1016/j.bmc.2017.11.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 10/27/2017] [Accepted: 11/25/2017] [Indexed: 01/21/2023]
Abstract
Ground breaking clinical therapeutic advances in the treatment of breast cancer (BC) is the introduction of selective estrogen receptor modulators (SERMs). We have expeditiously designed and synthesized indole-xanthendione hybrids by coalescing the indole nucleus with xanthendione. All the compounds were first screened for anti-proliferative activity, cytotoxicity and ER-α binding affinity by utilizing ER-α dominant T47D BC cell lines, PBMCs and ER-α competitor assay kit. From this study, two representative compounds 6e and 6f showing most promising activity were advanced for gene expression studies for targeting ER-α. Cell imaging experiment undoubtedly indicate that both the compounds were able to cross cellular bio membrane and accumulate thus instigating cytotoxicity. RT-PCR and Western blotting experiments further strengthened that both compounds altered the expression of mRNA and receptor protein of ER-α, thereby forestalling downstream transactivation and signalling pathway in T47D cells line. Structural investigation from induced fit simulation study suggest that indole moiety of the compounds 6e and 6f helps in the anchoring of the xanthendione moiety in the hydrophobic region of the cavity thus enabling the compound to bind in antagonistic conformation similar to bazedoxifene by extensive hydrogen bonding and Van der Waals forces. All these finding collectively imply that compound 6e and 6f represents a novel potent ER-α antagonist and in the development of SERMs for the management of BC.
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Sarkar B, Dhiman M, Mittal S, Mantha AK. Curcumin revitalizes Amyloid beta (25-35)-induced and organophosphate pesticides pestered neurotoxicity in SH-SY5Y and IMR-32 cells via activation of APE1 and Nrf2. Metab Brain Dis 2017; 32:2045-2061. [PMID: 28861684 DOI: 10.1007/s11011-017-0093-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/11/2017] [Indexed: 12/15/2022]
Abstract
Amyloid beta (Aβ) peptide deposition is the primary cause of neurodegeneration in Alzheimer's disease (AD) pathogenesis. Several reports point towards the role of pesticides in the AD pathogenesis, especially organophosphate pesticides (OPPs). Monocrotophos (MCP) and Chlorpyrifos (CP) are the most widely used OPPs. In this study, the role of MCP and CP in augmenting the Aβ-induced oxidative stress associated with the neurodegeneration in AD has been assessed in human neuroblastoma IMR-32 and SH-SY5Y cell lines. From the cell survival assay, it was observed that MCP and CP reduced cell survival both dose- and time-dependently. Nitro blue tetrazolium (NBT) based assay for determination of intracellular reactive oxygen species (ROS) demonstrated that Aβ(25-35), MCP or CP produce significant oxidative stress alone or synergistically in IMR-32 and SH-SY5Y cells, while pretreatment of curcumin reduced ROS levels significantly in all treatment combinations. In this study, we also demonstrate that treatment of Aβ(25-35) and MCP upregulated inducible nitric oxide synthase (iNOS/NOS2) whereas, no change was observed in neuronal nitric oxide synthase (nNOS/NOS1), but down-regulation of the nuclear factor erythroid 2-related factor 2 (Nrf2) level was observed. While curcumin pretreatment resulted in upregulation of iNOS and Nrf2 proteins. Also, the expression of key DNA repair enzymes APE1, DNA polymerase beta (Pol β), and PARP1 were found to be downregulated upon treatment with MCP, Aβ(25-35) and their combinations at 24 h and 48 h time points. In this study, pretreatment of curcumin to the SH-SY5Y cells enhanced the expression of DNA repair enzymes APE1, pol β, and PARP1 enzymes to counter the oxidative DNA base damage via base excision repair (BER) pathway, and also activated the antioxidant element (ARE) via Nrf2 upregulation. Furthermore, the immunofluorescent confocal imaging studies in SH-SY5Y and IMR-32 cells treated with Aβ(25-35) and MCP-mediated oxidative stress and their combinations at different time periods suggesting for cross-talk between the two proteins APE1 and Nrf2. The APE1's association with Nrf2 might be associated with the redox function of APE1 that might be directly regulating the ARE-mediated neuronal survival mechanisms.
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Affiliation(s)
- Bibekananda Sarkar
- Center for Animal Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, 151 001, India
| | - Monisha Dhiman
- Center for Biochemistry and Microbial Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Sunil Mittal
- Center for Environmental Science & Technology, School of Earth Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Anil K Mantha
- Center for Animal Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, 151 001, India.
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Cholia RP, Kumari S, Kumar S, Kaur M, Kaur M, Kumar R, Dhiman M, Mantha AK. An in vitro study ascertaining the role of H 2O 2 and glucose oxidase in modulation of antioxidant potential and cancer cell survival mechanisms in glioblastoma U-87 MG cells. Metab Brain Dis 2017; 32:1705-1716. [PMID: 28676971 DOI: 10.1007/s11011-017-0057-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/16/2017] [Indexed: 12/15/2022]
Abstract
Glial cells protect themselves from the elevated reactive oxygen species (ROS) via developing unusual mechanisms to maintain the genomic stability, and reprogramming of the cellular antioxidant system to cope with the adverse effects. In the present study non-cytotoxic dose of oxidants, H2O2 (100 μM) and GO (10 μU/ml) was used to induce moderate oxidative stress via generating ROS in human glioblastoma cell line U-87 MG cells, which showed a marked increase in the antioxidant capacity as studied by measuring the modulation in expression levels and activities of superoxide dismutase (SOD1 and SOD2) and catalase (CAT) enzymes, and the GSH content. However, pretreatment (3 h) of Curcumin and Quercetin (10 μM) followed by the treatment of oxidants enhanced the cell survival, and the levels/activities of the antioxidants studied. Oxidative stress also resulted in an increase in the nitrite levels in the culture supernatants, and further analysis by immunocytochemistry showed an increase in iNOS expression. In addition, phytochemical pretreatment decreased the nitrite level in the culture supernatants of oxidatively stressed U-87 MG cells. Elevated ROS also increased the expression of COX-2 and APE1 enzymes and pretreatment of Curcumin and Quercetin decreased COX-2 expression and increased APE1 expression in the oxidatively stressed U-87 MG cells. The immunocytochemistry also indicates for APE1 enhanced stress-dependent subcellular localization to the nuclear compartment, which advocates for enhanced DNA repair and redox functions of APE1 towards survival of U-87 MG cells. It can be concluded that intracellular oxidants activate the key enzymes involved in antioxidant mechanisms, NO-dependent survival mechanisms, and also in the DNA repair pathways for glial cell survival in oxidative-stress micro-environment.
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Affiliation(s)
- Ravi P Cholia
- Center for Animal Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, 151 001, India
| | - Sanju Kumari
- Center for Biosciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Saurabh Kumar
- Center for Biosciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Manpreet Kaur
- Center for Biosciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Manbir Kaur
- Center for Biosciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Raj Kumar
- Center for Pharmaceutical Sciences and Natural Products, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Monisha Dhiman
- Center for Biochemistry and Microbial Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Anil K Mantha
- Center for Animal Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, 151 001, India.
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Chowdhury IH, Koo SJ, Gupta S, Liang LY, Bahar B, Silla L, Nuñez-Burgos J, Barrientos N, Zago MP, Garg NJ. Gene Expression Profiling and Functional Characterization of Macrophages in Response to Circulatory Microparticles Produced during Trypanosoma cruzi Infection and Chagas Disease. J Innate Immun 2016; 9:203-216. [PMID: 27902980 DOI: 10.1159/000451055] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 09/27/2016] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Chronic inflammation and oxidative stress are hallmarks of chagasic cardiomyopathy (CCM). In this study, we determined if microparticles (MPs) generated during Trypanosoma cruzi (Tc) infection carry the host's signature of the inflammatory/oxidative state and provide information regarding the progression of clinical disease. METHODS MPs were harvested from supernatants of human peripheral blood mononuclear cells in vitro incubated with Tc (control: LPS treated), plasma of seropositive humans with a clinically asymptomatic (CA) or symptomatic (CS) disease state (vs. normal/healthy [NH] controls), and plasma of mice immunized with a protective vaccine before challenge infection (control: unvaccinated/infected). Macrophages (mφs) were incubated with MPs, and we probed the gene expression profile using the inflammatory signaling cascade and cytokine/chemokine arrays, phenotypic markers of mφ activation by flow cytometry, cytokine profile by means of an ELISA and Bioplex assay, and oxidative/nitrosative stress and mitotoxicity by means of colorimetric and fluorometric assays. RESULTS Tc- and LPS-induced MPs stimulated proliferation, inflammatory gene expression profile, and nitric oxide (∙NO) release in human THP-1 mφs. LPS-MPs were more immunostimulatory than Tc-MPs. Endothelial cells, T lymphocytes, and mφs were the major source of MPs shed in the plasma of chagasic humans and experimentally infected mice. The CS and CA (vs. NH) MPs elicited >2-fold increase in NO and mitochondrial oxidative stress in THP-1 mφs; however, CS (vs. CA) MPs elicited a more pronounced and disease-state-specific inflammatory gene expression profile (IKBKB, NR3C1, and TIRAP vs. CCR4, EGR2, and CCL3), cytokine release (IL-2 + IFN-γ > GCSF), and surface markers of mφ activation (CD14 and CD16). The circulatory MPs of nonvaccinated/infected mice induced 7.5-fold and 40% increases in ∙NO and IFN-γ production, respectively, while these responses were abolished when RAW264.7 mφs were incubated with circulatory MPs of vaccinated/infected mice. CONCLUSION Circulating MPs reflect in vivo levels of an oxidative, nitrosative, and inflammatory state, and have potential utility in evaluating disease severity and the efficacy of vaccines and drug therapies against CCM.
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Affiliation(s)
- Imran H Chowdhury
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, TX, USA
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Koo SJ, Spratt HM, Soman KV, Stafford S, Gupta S, Petersen JR, Zago MP, Kuyumcu-Martinez MN, Brasier AR, Wiktorowicz JE, Garg NJ. S-Nitrosylation Proteome Profile of Peripheral Blood Mononuclear Cells in Human Heart Failure. INTERNATIONAL JOURNAL OF PROTEOMICS 2016; 2016:1384523. [PMID: 27635260 PMCID: PMC5007369 DOI: 10.1155/2016/1384523] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/07/2016] [Accepted: 05/16/2016] [Indexed: 01/05/2023]
Abstract
Nitric oxide (NO) protects the heart against ischemic injury; however, NO- and superoxide-dependent S-nitrosylation (S-NO) of cysteines can affect function of target proteins and play a role in disease outcome. We employed 2D-GE with thiol-labeling FL-maleimide dye and MALDI-TOF MS/MS to capture the quantitative changes in abundance and S-NO proteome of HF patients (versus healthy controls, n = 30/group). We identified 93 differentially abundant (59-increased/34-decreased) and 111 S-NO-modified (63-increased/48-decreased) protein spots, respectively, in HF subjects (versus controls, fold-change | ≥1.5|, p ≤ 0.05). Ingenuity pathway analysis of proteome datasets suggested that the pathways involved in phagocytes' migration, free radical production, and cell death were activated and fatty acid metabolism was decreased in HF subjects. Multivariate adaptive regression splines modeling of datasets identified a panel of proteins that will provide >90% prediction success in classifying HF subjects. Proteomic profiling identified ATP-synthase, thrombospondin-1 (THBS1), and vinculin (VCL) as top differentially abundant and S-NO-modified proteins, and these proteins were verified by Western blotting and ELISA in different set of HF subjects. We conclude that differential abundance and S-NO modification of proteins serve as a mechanism in regulating cell viability and free radical production, and THBS1 and VCL evaluation will potentially be useful in the prediction of heart failure.
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Affiliation(s)
- Sue-jie Koo
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX 77555, USA
| | - Heidi M. Spratt
- Department Preventive Medicine and Community Health, UTMB, Galveston, TX 77555, USA
- Institute for Translational Sciences, UTMB, Galveston, TX 77555, USA
| | - Kizhake V. Soman
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
| | - Susan Stafford
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
| | - Shivali Gupta
- Department of Microbiology and Immunology, UTMB, Galveston, TX 77555, USA
| | - John R. Petersen
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX 77555, USA
| | - Maria P. Zago
- Instituto de Patología Experimental, CONICET-UNSa, 4400 Salta, Argentina
| | - Muge N. Kuyumcu-Martinez
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
| | - Allan R. Brasier
- Institute for Translational Sciences, UTMB, Galveston, TX 77555, USA
- Department of Internal Medicine-Endocrinology, UTMB, Galveston, TX 77555, USA
| | - John E. Wiktorowicz
- Institute for Translational Sciences, UTMB, Galveston, TX 77555, USA
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
- Institute for Human Infections and Immunity, UTMB, Galveston, TX 77555, USA
| | - Nisha Jain Garg
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX 77555, USA
- Department of Microbiology and Immunology, UTMB, Galveston, TX 77555, USA
- Institute for Human Infections and Immunity, UTMB, Galveston, TX 77555, USA
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Lee SH, Du J, Stitham J, Atteya G, Lee S, Xiang Y, Wang D, Jin Y, Leslie KL, Spollett G, Srivastava A, Mannam P, Ostriker A, Martin KA, Tang WH, Hwa J. Inducing mitophagy in diabetic platelets protects against severe oxidative stress. EMBO Mol Med 2016; 8:779-95. [PMID: 27221050 PMCID: PMC4931291 DOI: 10.15252/emmm.201506046] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 12/12/2022] Open
Abstract
Diabetes mellitus (DM) is a growing international concern. Considerable mortality and morbidity associated with diabetes mellitus arise predominantly from thrombotic cardiovascular events. Oxidative stress-mediated mitochondrial damage contributes significantly to enhanced thrombosis in DM A basal autophagy process has recently been described as playing an important role in normal platelet activation. We now report a substantial mitophagy induction (above basal autophagy levels) in diabetic platelets, suggesting alternative roles for autophagy in platelet pathology. Using a combination of molecular, biochemical, and imaging studies on human DM platelets, we report that platelet mitophagy induction serves as a platelet protective mechanism that responds to oxidative stress through JNK activation. By removing damaged mitochondria (mitophagy), phosphorylated p53 is reduced, preventing progression to apoptosis, and preserving platelet function. The absence of mitophagy in DM platelets results in failure to protect against oxidative stress, leading to increased thrombosis. Surprisingly, this removal of damaged mitochondria does not require contributions from transcription, as platelets lack a nucleus. The considerable energy and resources expended in "prepackaging" the complex mitophagy machinery in a short-lived normal platelet support a critical role, in anticipation of exposure to oxidative stress.
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Affiliation(s)
- Seung Hee Lee
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Jing Du
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Jeremiah Stitham
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Gourg Atteya
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Suho Lee
- Departments of Neurology and Neurobiology, Cellular Neuroscience, Neurodegeneration and Repair Program, Departments of Neurology and Neurobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Yaozu Xiang
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Dandan Wang
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Yu Jin
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Kristen L Leslie
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Geralyn Spollett
- Section of Endocrinology & Metabolism, Yale University School of Medicine, New Haven, CT, USA
| | - Anup Srivastava
- Department of Medicine, Section of Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Praveen Mannam
- Department of Medicine, Section of Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Allison Ostriker
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Kathleen A Martin
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
| | - Wai Ho Tang
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, Guangzhou, China
| | - John Hwa
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT, USA
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Wen JJ, Wan X, Thacker J, Garg NJ. Chemotherapeutic efficacy of phosphodiesterase inhibitors in chagasic cardiomyopathy. JACC Basic Transl Sci 2016; 1:235-250. [PMID: 27747306 PMCID: PMC5065248 DOI: 10.1016/j.jacbts.2016.04.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Molecular mechanisms of Trypanosoma cruzi (Tc)-induced Chagasic cardiomyopathy (CCM) are not well understood. The NO-cGMP-PKG1α pathway maintains cardiac homeostasis and inotropy and may be disturbed due to phosphodiesterase (PDE5)-mediated cGMP catabolism in CCM. To test this, C57BL/6 mice were infected with T. cruzi, and after the control of acute parasitemia (∼45 days post-infection), given sildenafil (SIL) (1 mg/kg) treatment for 3 weeks that ended long before the chronic disease phase (∼150 days post-infection). The PDE5 was increased and cGMP/PKG activity was decreased in chagasic myocardium. Transthoracic echocardiography revealed left ventricular (LV) systolic function, that is, stroke volume, cardiac output, and ejection fraction, was significantly decreased in chagasic mice. SIL treatment resulted in normal levels of PDE5 and cGMP/PKG activity and preserved the LV function. The cardioprotective effects of SIL were provided through inhibition of cardiac collagenosis and chronic inflammation that otherwise were pronounced in CCM. Further, SIL treatment restored the mitochondrial DNA–encoded gene expression, complex I–dependent (but not complex II–dependent) ADP-coupled respiration, and oxidant/antioxidant balance in chagasic myocardium. In vitro studies in cardiomyocytes verified that SIL conserved the redox metabolic state and cellular health via maintaining the antioxidant status that otherwise was compromised in response to T. cruzi infection. We conclude that SIL therapy was useful in controlling the LV dysfunction and chronic pathology in CCM. Mice infected with T. cruzi control acute parasitemia but develop chronic chagasic cardiomyopathy. Treatment with SIL (a phosphodiesterase inhibitor) during a therapeutic window of indeterminate phase provided powerful cardioprotective effects against chronic development of cardiomyopathy and LV dysfunction. SIL normalized the cGMP-dependent protein kinase activity and mitochondrial oxidative metabolism, and established the oxidant/antioxidant balance in chagasic myocardium. SIL prevented the oxidative/inflammatory adducts that precipitate cardiomyocytes death and cardiac remodeling in CCM.
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Affiliation(s)
- Jian-Jun Wen
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas
| | - Xianxiu Wan
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas
| | - John Thacker
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas
| | - Nisha Jain Garg
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas; Department of Pathology, UTMB, Galveston, TX; Institute for Human Infections and Immunity, UTMB, Galveston, TX
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TcI Isolates of Trypanosoma cruzi Exploit the Antioxidant Network for Enhanced Intracellular Survival in Macrophages and Virulence in Mice. Infect Immun 2016; 84:1842-1856. [PMID: 27068090 DOI: 10.1128/iai.00193-16] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 04/03/2016] [Indexed: 02/05/2023] Open
Abstract
Trypanosoma cruzi species is categorized into six discrete typing units (TcI to TcVI) of which TcI is most abundantly noted in the sylvatic transmission cycle and considered the major cause of human disease. In our study, the TcI strains Colombiana (COL), SylvioX10/4 (SYL), and a cultured clone (TCC) exhibited different biological behavior in a murine model, ranging from high parasitemia and symptomatic cardiomyopathy (SYL), mild parasitemia and high tissue tropism (COL), to no pathogenicity (TCC). Proteomic profiling of the insect (epimastigote) and infective (trypomastigote) forms by two-dimensional gel electrophoresis/matrix-assisted laser desorption ionization-time of flight mass spectrometry, followed by functional annotation of the differential proteome data sets (≥2-fold change, P < 0.05), showed that several proteins involved in (i) cytoskeletal assembly and remodeling, essential for flagellar wave frequency and amplitude and forward motility of the parasite, and (ii) the parasite-specific antioxidant network were enhanced in COL and SYL (versus TCC) trypomastigotes. Western blotting confirmed the enhanced protein levels of cytosolic and mitochondrial tryparedoxin peroxidases and their substrate (tryparedoxin) and iron superoxide dismutase in COL and SYL (versus TCC) trypomastigotes. Further, COL and SYL (but not TCC) were resistant to exogenous treatment with stable oxidants (H2O2 and peroxynitrite [ONOO(-)]) and dampened the intracellular superoxide and nitric oxide response in macrophages, and thus these isolates escaped from macrophages. Our findings suggest that protein expression conducive to increase in motility and control of macrophage-derived free radicals provides survival and persistence benefits to TcI isolates of T. cruzi.
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Garg NJ, Soman KV, Zago MP, Koo SJ, Spratt H, Stafford S, Blell ZN, Gupta S, Nuñez Burgos J, Barrientos N, Brasier AR, Wiktorowicz JE. Changes in Proteome Profile of Peripheral Blood Mononuclear Cells in Chronic Chagas Disease. PLoS Negl Trop Dis 2016; 10:e0004490. [PMID: 26919708 PMCID: PMC4769231 DOI: 10.1371/journal.pntd.0004490] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 02/03/2016] [Indexed: 12/15/2022] Open
Abstract
Trypanosoma cruzi (Tc) infection causes chagasic cardiomyopathy; however, why 30-40% of the patients develop clinical disease is not known. To discover the pathomechanisms in disease progression, we obtained the proteome signature of peripheral blood mononuclear cells (PBMCs) of normal healthy controls (N/H, n = 30) and subjects that were seropositive for Tc-specific antibodies, but were clinically asymptomatic (C/A, n = 25) or clinically symptomatic (C/S, n = 28) with cardiac involvement and left ventricular dysfunction. Protein samples were labeled with BODIPY FL-maleimide (dynamic range: > 4 orders of magnitude, detection limit: 5 f-mol) and resolved by two-dimensional gel electrophoresis (2D-GE). After normalizing the gel images, protein spots that exhibited differential abundance in any of the two groups were analyzed by mass spectrometry, and searched against UniProt human database for protein identification. We found 213 and 199 protein spots (fold change: |≥ 1.5|, p< 0.05) were differentially abundant in C/A and C/S individuals, respectively, with respect to N/H controls. Ingenuity Pathway Analysis (IPA) of PBMCs proteome dataset identified an increase in disorganization of cytoskeletal assembly and recruitment/activation and migration of immune cells in all chagasic subjects, though the invasion capacity of cells was decreased in C/S individuals. IPA predicted with high probability a decline in cell survival and free radical scavenging capacity in C/S (but not C/A) subjects. The MYC/SP1 transcription factors that regulate hypoxia and oxidative/inflammatory stress were predicted to be key targets in the context of control of Chagas disease severity. Further, MARS-modeling identified a panel of proteins that had >93% prediction success in classifying infected individuals with no disease and those with cardiac involvement and LV dysfunction. In conclusion, we have identified molecular pathways and a panel of proteins that could aid in detecting seropositive individuals at risk of developing cardiomyopathy.
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Affiliation(s)
- Nisha Jain Garg
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
- Department of Pathology, UTMB, Galveston, Texas, United States of America
- Faculty of the Institute for Human Infections and Immunity, and Sealy Center for Vaccine Development, UTMB, Galveston, Texas, United States of America
| | - Kizhake V. Soman
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, UTMB, Galveston, Texas, United States of America
| | - Maria P. Zago
- Instituto de Patología Experimental, CONICET-UNSa, Salta, Argentina
| | - Sue-Jie Koo
- Department of Pathology, UTMB, Galveston, Texas, United States of America
| | - Heidi Spratt
- Department of Preventive Medicine and Community Health, UTMB, Galveston, Texas, United States of America
- Institute for Translational Sciences, UTMB, Galveston, Texas, United States of America
| | - Susan Stafford
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, UTMB, Galveston, Texas, United States of America
| | - Zinzi N. Blell
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Shivali Gupta
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | | | | | - Allan R. Brasier
- Institute for Translational Sciences, UTMB, Galveston, Texas, United States of America
- Department of Internal Medicine, UTMB, Galveston, Texas, United States of America
| | - John E. Wiktorowicz
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, UTMB, Galveston, Texas, United States of America
- Institute for Translational Sciences, UTMB, Galveston, Texas, United States of America
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35
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Breitkreuz M, Hamdani N. A change of heart: oxidative stress in governing muscle function? Biophys Rev 2015; 7:321-341. [PMID: 28510229 DOI: 10.1007/s12551-015-0175-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 06/08/2015] [Indexed: 02/07/2023] Open
Abstract
Redox/cysteine modification of proteins that regulate calcium cycling can affect contraction in striated muscles. Understanding the nature of these modifications would present the possibility of enhancing cardiac function through reversible cysteine modification of proteins, with potential therapeutic value in heart failure with diastolic dysfunction. Both heart failure and muscular dystrophy are characterized by abnormal redox balance and nitrosative stress. Recent evidence supports the synergistic role of oxidative stress and inflammation in the progression of heart failure with preserved ejection fraction, in concert with endothelial dysfunction and impaired nitric oxide-cyclic guanosine monophosphate-protein kinase G signalling via modification of the giant protein titin. Although antioxidant therapeutics in heart failure with diastolic dysfunction have no marked beneficial effects on the outcome of patients, it, however, remains critical to the understanding of the complex interactions of oxidative/nitrosative stress with pro-inflammatory mechanisms, metabolic dysfunction, and the redox modification of proteins characteristic of heart failure. These may highlight novel approaches to therapeutic strategies for heart failure with diastolic dysfunction. In this review, we provide an overview of oxidative stress and its effects on pathophysiological pathways. We describe the molecular mechanisms driving oxidative modification of proteins and subsequent effects on contractile function, and, finally, we discuss potential therapeutic opportunities for heart failure with diastolic dysfunction.
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Affiliation(s)
- Martin Breitkreuz
- Department of Cardiovascular Physiology, Ruhr University Bochum, MA 3/56, 44780, Bochum, Germany
| | - Nazha Hamdani
- Department of Cardiovascular Physiology, Ruhr University Bochum, MA 3/56, 44780, Bochum, Germany.
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Báez AL, Reynoso MN, Lo Presti MS, Bazán PC, Strauss M, Miler N, Pons P, Rivarola HW, Paglini-Oliva P. Mitochondrial dysfunction in skeletal muscle during experimental Chagas disease. Exp Mol Pathol 2015; 98:467-75. [PMID: 25835781 DOI: 10.1016/j.yexmp.2015.03.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 03/27/2015] [Indexed: 01/17/2023]
Abstract
Trypanosoma cruzi invasion and replication in cardiomyocytes and other tissues induce cellular injuries and cytotoxic reactions, with the production of inflammatory cytokines and nitric oxide, both sources of reactive oxygen species. The myocyte response to oxidative stress involves the progression of cellular changes primarily targeting mitochondria. Similar alterations could be taking place in mitochondria from the skeletal muscle; if that is the case, a simple skeletal muscle biopsy would give information about the cardiac energetic production that could be used as a predictor of the chagasic cardiopathy evolution. Therefore, in the present paper we studied skeletal muscle mitochondrial structure and the enzymatic activity of citrate synthase and respiratory chain complexes I to IV (CI-CIV), in Albino Swiss mice infected with T. cruzi, Tulahuen strain and SGO Z12 and Lucky isolates, along the infection. Changes in the mitochondrial structure were detected in 100% of the mitochondria analyzed from the infected groups: they all presented at least 1 significant abnormality such as increase in their matrix or disorganization of their cristae, which are probably related to the enzymatic dysfunction. When we studied the Krebs cycle functionality through the measurement of the specific citrate synthase activity, we found it to be significantly diminished during the acute phase of the infection in Tulahuen and SGO Z12 infected groups with respect to the control one; citrate synthase activity from the Lucky group was significantly increased (p<0.05). The activity of this enzyme was reduced in all the infected groups during the chronic asymptomatic phase (p<0.001) and return to normal values (Tulahuen and SGO Z12) or increased its activity (Lucky) by day 365 post-infection (p.i.). When the mitochondrial respiratory chain was analyzed from the acute to the chronic phase of the infection through the measurement of the activity of complexes I to IV, the activity of CI remained similar to control in Tulahuen and Lucky groups, but was significantly augmented in the SGO Z12 one in the acute and chronic phases (p<0.05). CII increased its activity in Tulahuen and Lucky groups by day 75 p.i. and in SGO Z12 by day 365 p.i. (p<0.05). CIII showed a similar behavior in the 3 infected groups, remaining similar to control values in the first two stages of the infection and significantly increasing later on (p<0.0001). CIV showed an increase in its activity in Lucky throughout all stages of infection (p<0.0001) and an increase in Tulahuen by day 365days p.i. (p<0.0001); SGO Z12 on the other hand, showed a decreased CIV activity at the same time. The structural changes in skeletal muscle mitochondria and their altered enzyme activity began in the acute phase of infection, probably modifying the ability of mitochondria to generate energy; these changes were not compensated in the rest of the phases of the infection. Chagas is a systemic disease, which produces not only heart damage but also permanent skeletal muscle alterations.
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Affiliation(s)
- Alejandra L Báez
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
| | - María N Reynoso
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
| | - María S Lo Presti
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
| | - Paola C Bazán
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
| | - Mariana Strauss
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
| | - Noemí Miler
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
| | - Patricia Pons
- Cátedra de Microscopía Electrónica, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Héctor W Rivarola
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
| | - Patricia Paglini-Oliva
- Instituto de Investigaciones en Ciencias de la Salud (INICSA), CONICET and Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU Córdoba, Argentina
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Enzymatic activities linked to cardiac energy metabolism of Trypanosoma evansi-infected rats and their possible functional correlations to disease pathogenesis. Parasitology 2015; 142:1163-70. [PMID: 25758981 DOI: 10.1017/s0031182015000220] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The aim of this study was to investigate the activities of important enzymes involved in the phosphoryl transfer network (adenylate kinase and creatine kinase (CK)), lactate dehydrogenase (LDH), respiratory chain complexes and biomarkers of cardiac function in rat experimentally infected by Trypanosoma evansi. Rat heart samples were evaluated at 5 and 15 days post-infection (PI). At 5 day PI, there was an increase in LDH and CK activities, and a decrease in respiratory chain complexes II, IV and succinate dehydrogenase activities. In addition, on day 15 PI, a decrease in the respiratory chain complex IV activity was observed. Biomarkers of cardiac function were higher in infected animals on days 5 and 15 PI. Considering the importance of the energy metabolism for heart function, it is possible that the changes in the enzymatic activities involved in the cardiac phosphotransfer network and the decrease in respiratory chain might be involved partially in the role of biomarkers of cardiac function of T. evansi-infected rats.
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Kaur N, Dhiman M, Perez-Polo JR, Mantha AK. Ginkgolide B revamps neuroprotective role of apurinic/apyrimidinic endonuclease 1 and mitochondrial oxidative phosphorylation against Aβ25-35 -induced neurotoxicity in human neuroblastoma cells. J Neurosci Res 2015; 93:938-47. [PMID: 25677400 DOI: 10.1002/jnr.23565] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/17/2014] [Accepted: 01/05/2015] [Indexed: 12/22/2022]
Abstract
Accumulating evidence points to roles for oxidative stress, amyloid beta (Aβ), and mitochondrial dysfunction in the pathogenesis of Alzheimer's disease (AD). In neurons, the base excision repair pathway is the predominant DNA repair (BER) pathway for repairing oxidized base lesions. Apurinic/apyrimidinic endonuclease 1 (APE1), a multifunctional enzyme with DNA repair and reduction-oxidation activities, has been shown to enhance neuronal survival after oxidative stress. This study seeks to determine 1) the effect of Aβ25-35 on reactive oxygen species (ROS)/reactive nitrogen species (RNS) levels, 2) the activities of respiratory complexes (I, III, and IV), 3) the role of APE1 by ectopic expression, and 4) the neuromodulatory role of ginkgolide B (GB; from the leaves of Ginkgo biloba). The pro-oxidant Aβ25-35 peptide treatment increased the levels of ROS/RNS in human neuroblastoma IMR-32 and SH-SY5Y cells, which were decreased after pretreatment with GB. Furthermore, the mitochondrial APE1 level was found to be decreased after treatment with Aβ25-35 up to 48 hr, and the level was increased significantly in cells pretreated with GB. The oxidative phosphorylation (OXPHOS; activities of complexes I, III, and IV) indicated that Aβ25-35 treatment decreased activities of complexes I and IV, and pretreatment with GB and ectopic APE1 expression enhanced these activities significantly compared with Aβ25-35 treatment. Our results indicate that ectopic expression of APE1 potentiates neuronal cells to overcome the oxidative damage caused by Aβ25-35 . In addition, GB has been shown to modulate the mitochondrial OXPHOS against Aβ25-35 -induced oxidative stress and also to regulate the levels of ROS/RNS in the presence of ectopic APE1. This study presents findings from a new point of view to improve therapeutic potential for AD via the synergistic neuroprotective role played by APE1 in combination with the phytochemical GB.
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Affiliation(s)
- Navrattan Kaur
- Centre for Biosciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India
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Henao-Martínez AF, Agler AH, Watson AM, Hennessy C, Davidson E, Demos-Davies K, McKinsey TA, Wilson M, Schwartz DA, Yang IV. AKT network of genes and impaired myocardial contractility during murine acute Chagasic myocarditis. Am J Trop Med Hyg 2015; 92:523-9. [PMID: 25582694 DOI: 10.4269/ajtmh.14-0433] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Chagasic disease is associated with high morbidity in Latin America. Acute Chagasic myocarditis is consistently found in acute infections, but little is known about its contribution to chronic cardiomyopathy. The aim of the study was to phenotypically characterize two strains of mice with differential Chagas infection susceptibility and correlate strain myocarditis phenotypes with heart tissue gene expression. C57BL/6J and Balb/c mice were injected intraperitoneally with 0 or 150-200 tissue-derived trypomastigotes (Tulahuen strain). Echocardiograms, brain natriuretic peptide, and troponin were measured. Heart tissue was harvested for histopathological analysis and gene expression profiling on microarrays. Genes differently expressed between infected Balb/c and C57BL/6J mice were identified. Echocardiograms showed differences in Balb/c versus C57BL/6J infected mice in heart rate (413 versus 476 beats per minute; P = 0.0001), stroke volume (31.9 ± 9.3 versus 39.2 ± 5.5 μL; P = 0.03), and cardiac output (13.1 ± 3.5 versus 18.7 ± 3.2 μL/min; P = 0.002). Gene expression at 4 weeks analysis showed 32 statistically significant (q value < 0.05) differentially expressed genes between infected Balb/c and C57BL/6J mice that were enriched for genes related to the protein kinase B (AKT) pathway. These specific phenotypic features of cardiac response during acute Chagasic myocarditis may, in part, be related to host AKT network regulation.
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Affiliation(s)
- Andrés F Henao-Martínez
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Anne Hermetet Agler
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Alan M Watson
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Corinne Hennessy
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Elizabeth Davidson
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Kim Demos-Davies
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Timothy A McKinsey
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Michael Wilson
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - David A Schwartz
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
| | - Ivana V Yang
- Division of Infectious Diseases and Departments of Medicine and Immunology, University of Colorado, Denver, Colorado; Department of Epidemiology, Colorado School of Public Health, Denver, Colorado; Department of Pathology, Denver Health, Denver, Colorado
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Beckendorf L, Linke WA. Emerging importance of oxidative stress in regulating striated muscle elasticity. J Muscle Res Cell Motil 2014; 36:25-36. [PMID: 25373878 PMCID: PMC4352196 DOI: 10.1007/s10974-014-9392-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 10/03/2014] [Indexed: 12/11/2022]
Abstract
The contractile function of striated muscle cells is altered by oxidative/nitrosative stress, which can be observed under physiological conditions but also in diseases like heart failure or muscular dystrophy. Oxidative stress causes oxidative modifications of myofilament proteins and can impair myocyte contractility. Recent evidence also suggests an important effect of oxidative stress on muscle elasticity and passive stiffness via modifications of the giant protein titin. In this review we provide a short overview of known oxidative modifications in thin and thick filament proteins and then discuss in more detail those oxidative stress-related modifications altering titin stiffness directly or indirectly. Direct modifications of titin include reversible disulfide bonding within the cardiac-specific N2-Bus domain, which increases titin stiffness, and reversible S-glutathionylation of cryptic cysteines in immunoglobulin-like domains, which only takes place after the domains have unfolded and which reduces titin stiffness in cardiac and skeletal muscle. Indirect effects of oxidative stress on titin can occur via reversible modifications of protein kinase signalling pathways (especially the NO-cGMP-PKG axis), which alter the phosphorylation level of certain disordered titin domains and thereby modulate titin stiffness. Oxidative stress also activates proteases such as matrix-metalloproteinase-2 and (indirectly via increasing the intracellular calcium level) calpain-1, both of which cleave titin to irreversibly reduce titin-based stiffness. Although some of these mechanisms require confirmation in the in vivo setting, there is evidence that oxidative stress-related modifications of titin are relevant in the context of biomarker design and represent potential targets for therapeutic intervention in some forms of muscle and heart disease.
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Affiliation(s)
- Lisa Beckendorf
- Department of Cardiovascular Physiology, Institute of Physiology, Ruhr University Bochum, MA 3/56, 44780, Bochum, Germany
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Beneš H, Vuong MK, Boerma M, McElhanon KE, Siegel ER, Singh SP. Protection from oxidative and electrophilic stress in the Gsta4-null mouse heart. Cardiovasc Toxicol 2014; 13:347-56. [PMID: 23690225 DOI: 10.1007/s12012-013-9215-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
4-Hydroxynonenal (4-HNE) mediates many pathological effects of oxidative and electrophilic stress and signals to activate cytoprotective gene expression regulated by NF-E2-related factor 2 (Nrf2). By exhibiting very high levels of 4-HNE-conjugating activity, the murine glutathione transferase alpha 4 (GSTA4-4) helps regulate cellular 4-HNE levels. To examine the role of 4-HNE in vivo, we disrupted the murine Gsta4 gene. Gsta4-null mice exhibited no cardiac phenotype under normal conditions and no difference in cardiac 4-HNE level as compared to wild-type mice. We hypothesized that the Nrf2 pathway might contribute an important compensatory mechanism to remove excess cardiac 4-HNE in Gsta4-null mice. Cardiac nuclear extracts from Gsta4-null mice exhibited significantly higher Nrf2 binding to antioxidant response elements. We also observed responses in critical Nrf2 target gene products: elevated Sod2, Cat, and Akr1b7 mRNA levels and significant increases in both cardiac antioxidant and anti-electrophile enzyme activities. Gsta4-null mice were less sensitive and maintained normal cardiac function following chronic doxorubicin treatment, known to increase cardiac 4-HNE levels. Hence, in the absence of GSTA4-4 to modulate both physiological and pathological 4-HNE levels, the adaptive Nrf2 pathway may be primed to contribute to a preconditioned cardiac phenotype in the Gsta4-null mouse.
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Affiliation(s)
- Helen Beneš
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
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Dhiman M, Wan X, Popov VL, Vargas G, Garg NJ. MnSODtg mice control myocardial inflammatory and oxidative stress and remodeling responses elicited in chronic Chagas disease. J Am Heart Assoc 2013; 2:e000302. [PMID: 24136392 PMCID: PMC3835234 DOI: 10.1161/jaha.113.000302] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background We utilized genetically modified mice equipped with a variable capacity to scavenge mitochondrial and cellular reactive oxygen species to investigate the pathological significance of oxidative stress in Chagas disease. Methods and Results C57BL/6 mice (wild type, MnSODtg, MnSOD+/−, GPx1−/−) were infected with Trypanosoma cruzi and harvested during the chronic disease phase. Chronically infected mice exhibited a substantial increase in plasma levels of inflammatory markers (nitric oxide, myeloperoxidase), lactate dehydrogenase, and myocardial levels of inflammatory infiltrate and oxidative adducts (malondialdehyde, carbonyls, 3‐nitrotyrosine) in the order of wild type=MnSOD+/−>GPx1−/−>MnSODtg. Myocardial mitochondrial damage was pronounced and associated with a >50% decline in mitochondrial DNA content in chronically infected wild‐type and GPx1−/− mice. Imaging of intact heart for cardiomyocytes and collagen by the nonlinear optical microscopy techniques of multiphoton fluorescence/second harmonic generation showed a significant increase in collagen (>10‐fold) in chronically infected wild‐type mice, whereas GPx1−/− mice exhibited a basal increase in collagen that did not change during the chronic phase. Chronically infected MnSODtg mice exhibited a marginal decline in mitochondrial DNA content and no changes in collagen signal in the myocardium. P47phox−/− mice lacking phagocyte‐generated reactive oxygen species sustained a low level of myocardial oxidative stress and mitochondrial DNA damage in response to Trypanosoma cruzi infection. Yet chronically infected p47phox−/− mice exhibited increase in myocardial inflammatory and remodeling responses, similar to that noted in chronically infected wild‐type mice. Conclusions Inhibition of oxidative burst of phagocytes was not sufficient to prevent pathological cardiac remodeling in Chagas disease. Instead, enhancing the mitochondrial reactive oxygen species scavenging capacity was beneficial in controlling the inflammatory and oxidative pathology and the cardiac remodeling responses that are hallmarks of chronic Chagas disease.
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Affiliation(s)
- Monisha Dhiman
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX
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Pizzimenti S, Ciamporcero E, Daga M, Pettazzoni P, Arcaro A, Cetrangolo G, Minelli R, Dianzani C, Lepore A, Gentile F, Barrera G. Interaction of aldehydes derived from lipid peroxidation and membrane proteins. Front Physiol 2013; 4:242. [PMID: 24027536 PMCID: PMC3761222 DOI: 10.3389/fphys.2013.00242] [Citation(s) in RCA: 233] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 08/15/2013] [Indexed: 01/07/2023] Open
Abstract
A great variety of compounds are formed during lipid peroxidation of polyunsaturated fatty acids of membrane phospholipids. Among them, bioactive aldehydes, such as 4-hydroxyalkenals, malondialdehyde (MDA) and acrolein, have received particular attention since they have been considered as toxic messengers that can propagate and amplify oxidative injury. In the 4-hydroxyalkenal class, 4-hydroxy-2-nonenal (HNE) is the most intensively studied aldehyde, in relation not only to its toxic function, but also to its physiological role. Indeed, HNE can be found at low concentrations in human tissues and plasma and participates in the control of biological processes, such as signal transduction, cell proliferation, and differentiation. Moreover, at low doses, HNE exerts an anti-cancer effect, by inhibiting cell proliferation, angiogenesis, cell adhesion and by inducing differentiation and/or apoptosis in various tumor cell lines. It is very likely that a substantial fraction of the effects observed in cellular responses, induced by HNE and related aldehydes, be mediated by their interaction with proteins, resulting in the formation of covalent adducts or in the modulation of their expression and/or activity. In this review we focus on membrane proteins affected by lipid peroxidation-derived aldehydes, under physiological and pathological conditions.
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Affiliation(s)
- Stefania Pizzimenti
- Dipartimento di Scienze Cliniche e Biologiche, Università di Torino Torino, Italy
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Innate immune responses and antioxidant/oxidant imbalance are major determinants of human Chagas disease. PLoS Negl Trop Dis 2013; 7:e2364. [PMID: 23951383 PMCID: PMC3738450 DOI: 10.1371/journal.pntd.0002364] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 07/01/2013] [Indexed: 01/08/2023] Open
Abstract
Background We investigated the pathological and diagnostic role of selected markers of inflammation, oxidant/antioxidant status, and cellular injury in human Chagas disease. Methods Seropositive/chagasic subjects characterized as clinically-symptomatic or clinically-asymptomatic (n = 116), seronegative/cardiac subjects (n = 102), and seronegative/healthy subjects (n = 45) were analyzed for peripheral blood biomarkers. Results Seropositive/chagasic subjects exhibited an increase in sera or plasma levels of myeloperoxidase (MPO, 2.8-fold), advanced oxidation protein products (AOPP, 56%), nitrite (5.7-fold), lipid peroxides (LPO, 12–17-fold) and malondialdehyde (MDA, 4–6-fold); and a decline in superoxide dismutase (SOD, 52%) and glutathione (GSH, 75%) contents. Correlation analysis identified a significant (p<0.001) linear relationship between inflammatory markers (AOPP/nitrite: r = 0.877), inflammation and antioxidant/oxidant status (AOPP/glutathione peroxidase (GPX): r = 0.902, AOPP/GSH: r = 0.806, Nitrite/GPX: 0.773, Nitrite/LPO: 0.805, MDA/MPO: 0.718), and antioxidant/oxidant levels (GPX/MDA: r = 0.768) in chagasic subjects. Of these, MPO, LPO and nitrite biomarkers were highly specific and sensitive for distinguishing seropositive/chagasic subjects from seronegative/healthy controls (p<0.001, training and fitting AUC/ROC >0.95). The MPO (r = 0.664) and LPO (r = 0.841) levels were also correlated with clinical disease state in chagasic subjects (p<0.001). Seronegative/cardiac subjects exhibited up to 77% decline in SOD, 3–5-fold increase in LPO and glutamate pyruvate transaminase (GPT) levels, and statistically insignificant change in MPO, AOPP, MDA, GPX, GSH, and creatine kinase (CK) levels. Conclusions The interlinked effects of innate immune responses and antioxidant/oxidant imbalance are major determinants of human Chagas disease. The MPO, LPO and nitrite are excellent biomarkers for diagnosing seropositive/chagasic subjects, and MPO and LPO levels have potential utility in identifying clinical severity of Chagas disease. Chagas disease is a chronic disease of the heart, and caused by Trypanosoma cruzi infection. In this study, we have monitored the biomarkers of inflammation caused by innate immune cells, oxidative stress, and antioxidant status in seropositive/chagasic, seronegative/cardiac disease, and seronegative/healthy subjects. Our goal was to evaluate the diagnostic efficacy of selected biomarkers, and determine if any of the biomarkers are good indicators of clinical severity of Chagas disease. We also determined whether sera or plasma serve as a better source, and if sample storage affects the estimation of the selected biomarkers. Our data suggest that innate immune responses and antioxidant/oxidant imbalance are inter-linked pathological events in Chagas disease. We have identified peripheral blood markers (myeloperoxidase, lipid hydroperoxides and nitrite) that strongly distinguish seropositive/chagasic subjects from controls. Further, we found that myeloperoxidase and lipid hydroperoxide levels have potential utility in identifying seropositive subjects at risk of developing clinically symptomatic disease.
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Chowdhury D, Tangutur AD, Khatua TN, Saxena P, Banerjee SK, Bhadra MP. A proteomic view of isoproterenol induced cardiac hypertrophy: prohibitin identified as a potential biomarker in rats. J Transl Med 2013; 11:130. [PMID: 23706090 PMCID: PMC3667141 DOI: 10.1186/1479-5876-11-130] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 05/01/2013] [Indexed: 01/15/2023] Open
Abstract
Background The present study aimed at using a proteomics based approach to: a) analyze and contrast the proteome of the healthy and isoproterenol induced hypertrophied hearts and b) identify potential biomarkers for diagnosis of cardiac hypertrophy. Methods Male Sprague Dawley (SD) rats were administered isoproterenol (ISO, 5 mg/kg, sc, once daily) for 14 days to induce cardiac hypertrophy. There was a significant (p<0.05) increase (~ 55%) in the heart weight to tail length ratio after 14 days of treatment and cardiac hypertrophy was evidenced by significant increase of β-MHC and ANP, two indicative markers of cardiac hypertrophy, in the treated heart compared to that of control. Following confirmation of hypertrophy, 2DE of the tissue samples was done followed by MS/MS analysis of the protein spots to obtain a proteomic view for identification of novel biomarkers. Results Several important proteins were identified by proteomics analysis. They belong to the major functional categories such as cholesterol and protein metabolism, muscle contraction and development, transport, TCAcycle, ATP-biosynthesis, chaperone, signal transduction, DNA synthesis and ubiquitinisation. Careful examination of these protein spots by image analysis led to the successful identification of 7 differentially expressed proteins in the diseased sample. Further extension of this work for validation of differential expression of these proteins was also achieved by RTPCR and western blotting. Conclusions Our results demonstrate characteristic protein expression profile in control and hypertrophy condition in SD rats and also expand the existing knowledge on differentially expressed proteins in hypertrophy. The study signifies the importance of reduced expression of a novel protein such as Prohibitin (PHB) which may be associated with the cardiomyocytes growth and cardiac hypertrophy. However, further work is necessary to confirm the role of PHB in human heart and its potential role in diagnostic and therapeutic intervention in the clinic.
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Affiliation(s)
- Debabrata Chowdhury
- Centre for Chemical Biology, Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500607, India
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Cutrullis RA, Petray PB, Schapachnik E, Sánchez R, Postan M, González MN, Martín V, Corral RS. Elevated serum levels of macrophage migration inhibitory factor are associated with progressive chronic cardiomyopathy in patients with Chagas disease. PLoS One 2013; 8:e57181. [PMID: 23451183 PMCID: PMC3579792 DOI: 10.1371/journal.pone.0057181] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/18/2013] [Indexed: 12/27/2022] Open
Abstract
Clinical symptoms of chronic Chagas disease occur in around 30% of the individuals infected with Trypanosoma cruzi and are characterized by heart inflammation and dysfunction. The pathogenesis of chronic chagasic cardiomyopathy (CCC) is not completely understood yet, partially because disease evolution depends on complex host-parasite interactions. Macrophage migration inhibitory factor (MIF) is a pleiotropic proinflammatory cytokine that promotes numerous pathophysiological processes. In the current study, we investigated the link between MIF and CCC progression. Immunohistochemical analysis demonstrated MIF overexpression in the hearts from chronically T. cruzi-infected mice, particularly those showing intense inflammatory infiltration. We also found that MIF exogenously added to parasite-infected murine macrophage cultures is capable of enhancing the production of TNF-α and reactive oxygen species, both with pathogenic roles in CCC. Thus, the integrated action of MIF and other cytokines and chemokines may account for leukocyte influx to the infected myocardium, accompanied by enhanced local production of multiple inflammatory mediators. We further examined by ELISA the level of MIF in the sera from chronic indeterminate and cardiomyopathic chagasic patients, and healthy subjects. CCC patients displayed significantly higher MIF concentrations than those recorded in asymptomatic T. cruzi-infected and uninfected individuals. Interestingly, increased MIF levels were associated with severe progressive Chagas heart disease, in correlation with elevated serum concentration of high sensitivity C-reactive protein and also with several echocardiographic indicators of left ventricular dysfunction, one of the hallmarks of CCC. Our present findings represent the first evidence that enhanced MIF production is associated with progressive cardiac impairment in chronic human infection with T. cruzi, strengthening the relationship between inflammatory response and parasite-driven pathology. These observations contribute to unravel the elements involved in the pathogenesis of CCC and may also be helpful for the design of novel therapies aimed to control long-term morbidity in chagasic patients.
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Affiliation(s)
- Romina A. Cutrullis
- Servicio de Parasitología-Chagas, Hospital de Niños ‘Dr. Ricardo Gutiérrez’, Buenos Aires, Argentina
| | - Patricia B. Petray
- Servicio de Parasitología-Chagas, Hospital de Niños ‘Dr. Ricardo Gutiérrez’, Buenos Aires, Argentina
| | - Edgardo Schapachnik
- Servicio de Cardiología, Hospital General de Agudos ‘Dr. Cosme Argerich’, Buenos Aires, Argentina
| | - Rubén Sánchez
- Servicio de Cardiología, Hospital General de Agudos ‘Dr. José María Ramos Mejía’, Buenos Aires, Argentina
| | - Miriam Postan
- Instituto Nacional de Parasitología ‘Dr. Mario Fatala Chabén’/ANLIS/Malbrán, Buenos Aires, Argentina
| | - Mariela N. González
- Instituto Nacional de Parasitología ‘Dr. Mario Fatala Chabén’/ANLIS/Malbrán, Buenos Aires, Argentina
| | - Valentina Martín
- Laboratorio de Inmunología, Centro de Salud y Medio Ambiente (CESyMA), Escuela de Ciencia y Tecnología (ECyT), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Ricardo S. Corral
- Servicio de Parasitología-Chagas, Hospital de Niños ‘Dr. Ricardo Gutiérrez’, Buenos Aires, Argentina
- * E-mail:
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McElhanon KE, Bose C, Sharma R, Wu L, Awasthi YC, Singh SP. Gsta4 Null Mouse Embryonic Fibroblasts Exhibit Enhanced Sensitivity to Oxidants: Role of 4-Hydroxynonenal in Oxidant Toxicity. ACTA ACUST UNITED AC 2013; 2. [PMID: 24353929 DOI: 10.4236/ojapo.2013.21001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The alpha class glutathione s-transferase (GST) isozyme GSTA4-4 (EC2.5.1.18) exhibits high catalytic efficiency to-wards 4-hydroxynon-2-enal (4-HNE), a major end product of oxidative stress induced lipid peroxidation. Exposure of cells and tissues to heat, radiation, and chemicals has been shown to induce oxidative stress resulting in elevated concentrations of 4-HNE that can be detrimental to cell survival. Alternatively, at physiological levels 4-HNE acts as a signaling molecule conveying the occurrence of oxidative events initiating the activation of adaptive pathways. To examine the impact of oxidative/electrophilic stress in a model with impaired 4-HNE metabolizing capability, we disrupted the Gsta4 gene that encodes GSTA4-4 in mice. The effect of electrophile and oxidants on embryonic fibroblasts (MEF) isolated from wild type (WT) and Gsta4 null mice were examined. Results indicate that in the absence of GSTA4-4, oxidant-induced toxicity is potentiated and correlates with elevated accumulation of 4-HNE adducts and DNA damage. Treatment of Gsta4 null MEF with 1,1,4-tris(acetyloxy)-2(E)-nonene [4-HNE(Ac)3], a pro-drug form of 4-HNE, resulted in the activation and phosphorylation of the c-jun-N-terminal kinase (JNK), extracellular-signal-regulated kinases (ERK 1/2) and p38 mitogen activated protein kinases (p38 MAPK) accompanied by enhanced cleavage of caspase-3. Interestingly, when recombinant mammalian or invertebrate GSTs were delivered to Gsta4 null MEF, activation of stress-related kinases in 4-HNE(Ac)3 treated Gsta4 null MEF were inversely correlated with the catalytic efficiency of delivered GSTs towards 4-HNE. Our data suggest that GSTA4-4 plays a major role in protecting cells from the toxic effects of oxidant chemicals by attenuating the accumulation of 4-HNE.
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Affiliation(s)
- Kevin E McElhanon
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, USA ; Central Arkansas Veterans Healthcare System, Little Rock, USA
| | - Chhanda Bose
- Central Arkansas Veterans Healthcare System, Little Rock, USA ; Department of Internal Medicine, Nephrology Division, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Rajendra Sharma
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, USA ; Central Arkansas Veterans Healthcare System, Little Rock, USA
| | - Liping Wu
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, USA ; Central Arkansas Veterans Healthcare System, Little Rock, USA
| | - Yogesh C Awasthi
- Department of Molecular Biology and Immunology, University of North Texas Health Science Center, Fort Worth, USA
| | - Sharda P Singh
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, USA ; Central Arkansas Veterans Healthcare System, Little Rock, USA
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48
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Chronic indeterminate phase of Chagas’ disease: mitochondrial involvement in infection with two strains. Parasitology 2012; 140:414-21. [DOI: 10.1017/s0031182012001771] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
SUMMARYChagasic cardiopathy has become one of the most frequent causes of heart failure and sudden death, as well as one of the most common causes of cardio-embolic stroke in Latin America. The myocyte response to oxidative stress involves the progression of cellular changes, primarily targeting the mitochondria and modifying therefore the energy supply. In this paper we analysed the effect of the infection of mice with 2 different strains of Trypanosoma cruzi (Tulahuen and SGO Z12) in the chronic indeterminate stage (75 days post-infection), upon the structure and function of cardiac mitochondria. The structural results showed that 83% of the mitochondria from the Tulahuen-infected mice presented an increase in their matrix and 91% of the mitochondria from the SGO Z12-infected group showed a reduction in their diameter (P < 0·05). When the Krebs cycle and mitochondrial respiratory chain functionality was analysed through the measurement of the citrate synthase and complexes I to IV activity, it showed that their activity was altered in all cases in a similar manner in both infected groups. In this paper we have demonstrated that the chronic indeterminate phase is not ‘silent’ and that cardiac mitochondria are clearly involved in the genesis and progression to the chronic chagasic cardiopathy when different factors alter the host-parasite equilibrium.
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Machado FS, Dutra WO, Esper L, Gollob KJ, Teixeira MM, Factor SM, Weiss LM, Nagajyothi F, Tanowitz HB, Garg NJ. Current understanding of immunity to Trypanosoma cruzi infection and pathogenesis of Chagas disease. Semin Immunopathol 2012; 34:753-70. [PMID: 23076807 DOI: 10.1007/s00281-012-0351-7] [Citation(s) in RCA: 152] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 09/21/2012] [Indexed: 02/06/2023]
Abstract
Chagas disease caused by Trypanosoma cruzi remains an important neglected tropical disease and a cause of significant morbidity and mortality. No longer confined to endemic areas of Latin America, it is now found in non-endemic areas due to immigration. The parasite may persist in any tissue, but in recent years, there has been increased recognition of adipose tissue both as an early target of infection and a reservoir of chronic infection. The major complications of this disease are cardiomyopathy and megasyndromes involving the gastrointestinal tract. The pathogenesis of Chagas disease is complex and multifactorial involving many interactive pathways. The significance of innate immunity, including the contributions of cytokines, chemokines, reactive oxygen species, and oxidative stress, has been emphasized. The role of the components of the eicosanoid pathway such as thromboxane A(2) and the lipoxins has been demonstrated to have profound effects as both pro- and anti-inflammatory factors. Additionally, we discuss the vasoconstrictive actions of thromboxane A(2) and endothelin-1 in Chagas disease. Human immunity to T. cruzi infection and its role in pathogen control and disease progression have not been fully investigated. However, recently, it was demonstrated that a reduction in the anti-inflammatory cytokine IL-10 was associated with clinically significant chronic chagasic cardiomyopathy.
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Affiliation(s)
- Fabiana S Machado
- Department of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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