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Singh P, Tripathi MK, Yasir M, Ranjan A, Shrivastava R. Effects of carbamate pesticides intermediates on Escherichia coli membrane architecture: An in vitro and in silico approach. Environ Anal Health Toxicol 2021; 36:e2021020-0. [PMID: 34428861 PMCID: PMC8598408 DOI: 10.5620/eaht.2021020] [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: 04/17/2021] [Accepted: 08/10/2021] [Indexed: 11/21/2022] Open
Abstract
Methyl isocyanate (MIC), a low molecular weight synthetic aliphatic compound, having an isocyanate group (−NCO), has industrial application. In this study, the effects of methyl isocyanate and its mechanism on outer membrane protein of Escherichia coli were observed using experimental and computational methods. In vitro exposure of N-succinimidyl N-methylcarbamate (NSNM) a synthetic analogue of MIC on E. coli to a final concentration of 2 mM was found to affect the growth curve pattern and changes in cell morphology. Molecular docking studies of MIC and NSNM with E. coli outer membrane protein (OmpW, OmpX, OmpF OmpA), and periplasmic domain (PAL) were performed. The in-silico results revealed that outer membrane protein OmpF showed the highest negative binding energy, i.e. ΔG −4.11 kcal/mole and ΔG −3.19 kcal/mole by NSNM and MIC as compared to other proteins. Our study concludes that methyl isocyanate retains lethal toxicity which leads to cell death due to the membrane protein damage of E. coli membrane.
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Affiliation(s)
- Pushpendra Singh
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal, Madhya Pradesh 462003 India.,State Virus Research and Diagnostic Laboratory, Department of Microbiology, All India Institute of Medical Sciences, Raipur, Chhattisgarh 492099 India
| | - Manish Kumar Tripathi
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal, Madhya Pradesh 462003 India.,Department of Biophysics, All India Institute of Medical Sciences, New Delhi-110029, India
| | - Mohammad Yasir
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal, Madhya Pradesh 462003 India
| | - Ashish Ranjan
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal, Madhya Pradesh 462003 India
| | - Rahul Shrivastava
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal, Madhya Pradesh 462003 India
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Tripathi MK, Yasir M, Singh P, Shrivastava R. A Comparative Study to Explore the Effect of Different Compounds in Immune Proteins of Human Beings Against Tuberculosis: An In-silico Approach. Curr Bioinform 2020. [DOI: 10.2174/1574893614666190226153553] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Background:
The lungs are directly exposed to pollutants, pathogens, allergens, and
chemicals, which might lead to physiological disorders. During the Bhopal gas disaster, the lungs
of the victims were exposed to various chemicals. Here, using molecular modelling studies, we describe
the effects of these chemicals (Dimethyl urea, Trimethyl urea, Trimethyl isocyanurate, Alphanaphthol,
Butylated hydroxytoluene and Carbaryl) on pulmonary immune proteins.
Objective:
In the current study, we performed molecular modelling methods like molecular docking
and molecular dynamics simulation studies to identify the effects of hydrolytic products of
MIC and dumped residues on the pulmonary immune proteins.
Methods:
Molecular docking studies of (Dimethyl urea, Trimethyl urea, Trimethyl isocyanurate,
Alphanaphthol, Butylated hydroxytoluene and Carbaryl) on pulmonary immune proteins was performed
using the Autodock 4.0 tool, and gromacs was used for the molecular dynamics simulation
studies to get an insight into the possible mode of protein-ligand interactions. Further, in silico
ADMET studies was performed using the TOPKAT protocol of discovery studio.
Results:
From docking studies, we found that surfactant protein-D is inhibited most by the chemicals
alphanaphthol (dock score, -5.41Kcal/mole), butylated hydroxytoluene (dock score,-6.86
Kcal/mole), and carbaryl (dock score,-6.1 Kcal/mole). To test their stability, the obtained dock poses
were placed in a lipid bilayer model system mimicking the pulmonary surface. Molecular dynamics
simulations suggest a stable interaction between surfactant protein-D and carbaryl.
Conclusion:
This, study concludes that functioning of surfactant protein-D is directly or indirectly
affected by the carbaryl chemical, which might account for the increased susceptibility of Bhopal
gas disaster survivors to pulmonary tuberculosis.
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Affiliation(s)
- Manish Kumar Tripathi
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
| | - Mohammad Yasir
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
| | - Pushpendra Singh
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
| | - Rahul Shrivastava
- Department of Biological Science & Engineering, Maulana Azad National Institute of Technology, Bhopal-462003, M.P., India
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Bhargava A, Khare NK, Bunkar N, Lenka RK, Mishra PK. Role of mitochondrial oxidative stress on lymphocyte homeostasis in patients diagnosed with extra-pulmonary tuberculosis. Cell Biol Int 2015; 40:166-76. [PMID: 26431927 DOI: 10.1002/cbin.10549] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/30/2015] [Indexed: 12/11/2022]
Abstract
Extra-pulmonary tuberculosis is often an underrated illness. Recent clinical studies have pointed out that lymphocyte homeostasis is dramatically disturbed as revealed through a series of signs and symptoms. Lymphocytes, the known effector cells of our immune system, play an important role in providing immunologic resistance against Mycobacterium infection. It is important to have quantitative insights into the lifespan of these cells; therefore, we aimed to study the precise effect of gastrointestinal tuberculosis infection on peripheral blood lymphocyte subpopulations and function. Our results indicated that gastrointestinal tuberculosis could increase mitochondrial oxidative stress, lower mitochondrial DNA copy number, promote nuclear DNA damage and repair response, decrease mitochondrial respiratory chain enzyme activities, and upregulate Bcl-2 and caspase-3 gene expression in lymphocytes. We further revealed that Mycobacterium infection induces autophagy for selective sequestration and subsequent degradation of the dysfunctional mitochondrion before activating cellular apoptosis in the peripheral lymphocyte pool. Together, these observations uncover a new role of mitochondrial-nuclear crosstalk that apparently contributes to lymphocyte homeostasis in gastrointestinal tuberculosis infection.
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Affiliation(s)
- Arpit Bhargava
- Translational Research Laboratory, School of Biological Sciences, Dr. H. S. Gour Central University, Sagar, Madhya Pradesh, India
| | - Naveen Kumar Khare
- Division of Translational Research, Tata Memorial Centre, ACTREC, Navi Mumbai, Maharashtra, India
| | - Neha Bunkar
- Translational Research Laboratory, School of Biological Sciences, Dr. H. S. Gour Central University, Sagar, Madhya Pradesh, India
| | - Rajesh Kumar Lenka
- Department of Microbiology, I.M.S. & SUM Hospital, Bhubaneswar, Odisha, India
| | - Pradyumna Kumar Mishra
- Translational Research Laboratory, School of Biological Sciences, Dr. H. S. Gour Central University, Sagar, Madhya Pradesh, India
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Insights from the Molecular Docking of Hydrolytic Products of Methyl Isocyanate (MIC) to Inhibition of Human Immune Proteins. Interdiscip Sci 2015; 7:287-94. [DOI: 10.1007/s12539-015-0012-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 02/08/2014] [Accepted: 07/08/2014] [Indexed: 01/07/2023]
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Tripathi MK, Yasir M, Gurjar VS, Bose P, Dubey A, Shrivastava R. Insights from the molecular docking of hydrolytic products of methyl iso cyanate (MIC) to inhibition of human immune proteins. Interdiscip Sci 2015. [PMID: 25595583 DOI: 10.1007/s12539-013-0217-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 02/08/2014] [Accepted: 07/08/2014] [Indexed: 06/04/2023]
Abstract
This study is an attempt to find the reason for immunological suppression in victims of Bhopal gas tragedy during 1984 against Mycobacterium Tuberculosis (Mtb) infection. Here we tried to understand this problem by studying interactions between immune proteins associated with susceptibility to Tuberculosis and hydrolytic products of methyl isocyanate (MIC) released during the tragedy.The hydrolytic products of methyl isocyanate (MIC) i.e. dimethyl urea, trimethyl urea and trimethyl isocyanurate was docked to different human immune proteins against Mtb using autodock 4.0. Results shows that all hydrolytic product (dimethyl urea, trimethyl urea and trimethylisocyanurate) strongly inhibits to CD40 ligand and their binding energies were found to be ΔG -3.51, -3.79, -4.55 (Kcal/Mole) respectively. Further to check the stability of docked complex we performed the molecular dynamics simulation study which also shows that CD40 Ligand was maximum inhibited by trimethylisocyanurate, has a role in the macrophage activation for the destruction of Mycobacterium tuberculosis. The present study may lead to better understanding of human immune protein inhibition by hydrolytic product of methyl isocyanate (MIC).
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Affiliation(s)
- Manish Kumar Tripathi
- Department of Biological Sciences and Engineering, Maulana Azad National Institute of Technology, Bhopal, 462051, India
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Bhargava A, Pathak N, Varshney S, Shrivastava M, Mishra PK. Molecular detection of window phase hepatitis C virus infection in voluntary blood donors and health care workers in a cohort from central India. Indian J Community Med 2014; 39:51-2. [PMID: 24696542 PMCID: PMC3968585 DOI: 10.4103/0970-0218.126362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Arpit Bhargava
- Department of Research, Bhopal Memorial Hospital and Research Centre, Bhopal, India ; Division of Translational Research, Tata Memorial Centre, ACTREC, Navi Mumbai, Maharashtra, India
| | - Neelam Pathak
- Department of Research, Bhopal Memorial Hospital and Research Centre, Bhopal, India
| | - Subodh Varshney
- Department of Surgical Gastroenterology, Bhopal Memorial Hospital and Research Centre, Bhopal, India
| | - Manisha Shrivastava
- Department of Transfusion Medicine, Bhopal Memorial Hospital and Research Centre, Bhopal, India E-mail:
| | - Pradyumna Kumar Mishra
- Department of Research, Bhopal Memorial Hospital and Research Centre, Bhopal, India ; Division of Translational Research, Tata Memorial Centre, ACTREC, Navi Mumbai, Maharashtra, India
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Panwar H, Raghuram GV, Jain D, Ahirwar AK, Khan S, Jain SK, Pathak N, Banerjee S, Maudar KK, Mishra PK. Cell cycle deregulation by methyl isocyanate: Implications in liver carcinogenesis. ENVIRONMENTAL TOXICOLOGY 2014; 29:284-297. [PMID: 22223508 DOI: 10.1002/tox.21757] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 11/30/2011] [Accepted: 12/03/2011] [Indexed: 05/31/2023]
Abstract
Liver is often exposed to plethora of chemical toxins. Owing to its profound physiological role and central function in metabolism and homeostasis, pertinent succession of cell cycle in liver epithelial cells is of prime importance to maintain cellular proliferation. Although recent evidence has displayed a strong association between exposures to methyl isocyanate (MIC), one of the most toxic isocyanates, and neoplastic transformation, molecular characterization of the longitudinal effects of MIC on cell cycle regulation has never been performed. Here, we sequentially delineated the status of different proteins arbitrating the deregulation of cell cycle in liver epithelial cells treated with MIC. Our data reaffirms the oncogenic capability of MIC with elevated DNA damage response proteins pATM and γ-H2AX, deregulation of DNA damage check point genes CHK1 and CHK2, altered expression of p53 and p21 proteins involved in cell cycle arrest with perturbation in GADD-45 expression in the treated cells. Further, alterations in cyclin A, cyclin E, CDK2 levels along with overexpression of mitotic spindle checkpoints proteins Aurora A/B, centrosomal pericentrin protein, chromosomal aberrations, and loss of Pot1a was observed. Thus, MIC impacts key proteins involved in cell cycle regulation to trigger genomic instability as a possible mechanism of developmental basis of liver carcinogenesis.
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Affiliation(s)
- Hariom Panwar
- Research Wing, Bhopal Memorial Hospital and Research Centre, Bhopal, India; Department of Biotechnology, Dr. Hari Singh Gour Central University, Sagar, India
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Novel approach for quantification of hepatitis C virus in liver cirrhosis using real-time reverse transcriptase PCR. J Gastrointest Surg 2012; 16:142-6; discussion 146-7. [PMID: 22048842 DOI: 10.1007/s11605-011-1750-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 10/13/2011] [Indexed: 01/31/2023]
Abstract
BACKGROUND Hepatitis C virus (HCV) infects nearly 3% of the population worldwide and is a major cause of acute and chronic infections leading to fibrosis, cirrhosis, and hepatocellular carcinoma. Current laboratory diagnosis of HCV is based on specific antibody detection (anti-hepatitis C virus (anti-HCV)) in serum. As HCV replicates in the liver cells, detection and localization of HCV RNA in liver tissue are vital for diagnosis. METHODS Ten biopsy samples diagnosed for cryptogenic liver cirrhosis, negative for the presence of anti-HCV and serum HCV RNA, were studied for analyzing presence of viral nucleic acid in liver tissues. Qualitative screening for HCV was done through ELISA while the nucleic acid analysis was performed through COBAS Amplicor. Detection of HCV RNA in liver tissue biopsies was performed following standard protocol of HCV detection kit (Shenzhen PG Biotech) with modifications using Light Cycler 2.0 (minimum detection limit 10 copies/ml). RESULT Quantitative detection in liver biopsies following the modified method showed the presence of HCV RNA in three samples out of the ten studied. CONCLUSION The results indicate that using Light Cycler 2.0, following the modified technique described, constitutes a reliable method of quantitative detection and localization of HCV in tissue in "serosilent" HCV infection.
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