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Mondal R, Dam P, Chakraborty J, Shaw S, Pradhan S, Das S, Nesa J, Meena K, Ghati A, Chaudhuri SD, Bhattacharjee D, Mandal V, Sarkar B, Mandal AK. Genomic dataset of a multiple-drug resistant Pseudomonas sp. strain RAC1 isolated from a flacherie infected Nistari race of Bombyx mori L. Data Brief 2024; 54:110293. [PMID: 38524843 PMCID: PMC10957439 DOI: 10.1016/j.dib.2024.110293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 02/29/2024] [Indexed: 03/26/2024] Open
Abstract
Species belonging to the genus Pseudomonas is a rod shaped Gram-negative bacteria emerged as an important silkworm pathogen with broad-level multi-drug resistance. The extensive usage of antimicrobials in sericulture farming is gradually leading to the emergence of multi-drug resistance (MDR) strains, posing a significant threat to the well-being of both Bombyx mori L. and serifarmers. Pseudomonas spp. with MDR level may gets transmitted from the infected silkworm to human handlers either via direct contact or through contaminated feces. To understand the emerging concern of antimicrobial resistance (AMR) in Pseudomonas spp. provides insights into their genomic information. Here, we present the draft genome sequence data of Pseudomonas sp. strain RAC1 isolated from a flacherie infected Nistari race of Bombyx mori L. from the silkworm rearing house of Raiganj University, India and sequenced using the Illumina NovaSeq 6000 platform. The estimated genome size of the strain was 4494347 bp with a G + C content of 63.5%. The de novo assembly of the genome generated 38 contigs with an N50 of 200 kb. Our data might help to reveal the genetic diversity, underlying mechanisms of AMR and virulence potential of Pseudomonas spp. This draft-genome shotgun project has been deposited under the NCBI GenBank accession number NZ_JAUTXS000000000.
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Affiliation(s)
- Rittick Mondal
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Paulami Dam
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Joydeep Chakraborty
- Department of Microbiology, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Shubhajit Shaw
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Sayantan Pradhan
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Sandip Das
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Jannatun Nesa
- Department of Zoology, Gangarampur College, Dakshin Dinajpur, West Bengal 733124, India
| | - Khemraj Meena
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Kishangarh, Rajasthan 305817, India
| | - Amit Ghati
- Department of Microbiology, Barrackpore Rastraguru Surendranath College, Barrackpore, West Bengal 700120, India
| | - Sandip Dev Chaudhuri
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Debjoy Bhattacharjee
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
| | - Vivekananda Mandal
- Plant and Microbial Physiology and Biochemistry Laboratory, Department of Botany, University of Gour Banga, Malda, West Bengal 732103, India
| | - Biraj Sarkar
- Faculty of Allied Health Sciences (FAHS), The ICFAI University, Tripura; Kamalghat, Mohanpur, West Tripura 799210, India
| | - Amit Kumar Mandal
- Department of Sericulture, Raiganj University, North Dinajpur, West Bengal 733134, India
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2
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Ghosh P, Chakraborty J. Exploring the role of symbiotic modifier peptidases in the legume - rhizobium symbiosis. Arch Microbiol 2024; 206:147. [PMID: 38462552 DOI: 10.1007/s00203-024-03920-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/12/2024]
Abstract
Legumes can establish a mutual association with soil-derived nitrogen-fixing bacteria called 'rhizobia' forming lateral root organs called root nodules. Rhizobia inside the root nodules get transformed into 'bacteroids' that can fix atmospheric nitrogen to ammonia for host plants in return for nutrients and shelter. A substantial 200 million tons of nitrogen is fixed annually through biological nitrogen fixation. Consequently, the symbiotic mechanism of nitrogen fixation is utilized worldwide for sustainable agriculture and plays a crucial role in the Earth's ecosystem. The development of effective nitrogen-fixing symbiosis between legumes and rhizobia is very specialized and requires coordinated signaling. A plethora of plant-derived nodule-specific cysteine-rich (NCR or NCR-like) peptides get actively involved in this complex and tightly regulated signaling process of symbiosis between some legumes of the IRLC (Inverted Repeat-Lacking Clade) and Dalbergioid clades and nitrogen-fixing rhizobia. Recent progress has been made in identifying two such peptidases that actively prevent bacterial differentiation, leading to symbiotic incompatibility. In this review, we outlined the functions of NCRs and two nitrogen-fixing blocking peptidases: HrrP (host range restriction peptidase) and SapA (symbiosis-associated peptidase A). SapA was identified through an overexpression screen from the Sinorhizobium meliloti 1021 core genome, whereas HrrP is inherited extra-chromosomally. Interestingly, both peptidases affect the symbiotic outcome by degrading the NCR peptides generated from the host plants. These NCR-degrading peptidases can shed light on symbiotic incompatibility, helping to elucidate the reasons behind the inefficiency of nitrogen fixation observed in certain groups of rhizobia with specific legumes.
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Affiliation(s)
- Prithwi Ghosh
- Department of Botany, Narajole Raj College, Vidyasagar University, Midnapore, 721211, India.
| | - Joydeep Chakraborty
- School of Plant Sciences and Food Security, Tel Aviv University, Tel-Aviv, Israel
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Chakraborty J, Grineski SE, Collins TW, Aun JJ. Disparities in adverse impacts of the COVID-19 pandemic by disability status in metropolitan Texas. J Public Health (Oxf) 2024; 46:e60-e64. [PMID: 37934958 DOI: 10.1093/pubmed/fdad209] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 10/07/2023] [Indexed: 11/09/2023] Open
Abstract
BACKGROUND This article addresses the urgent need for more evidence-based research using primary data to document how the COVID-19 pandemic affected the health and social wellbeing of disabled individuals. Our study sought to determine if adults with disabilities, and with specific types of disability, were more likely to suffer adverse health and social impacts related to COVID-19 than nondisabled adults in metropolitan Texas, during the first 18 months of the pandemic. METHODS We collected primary data from randomly selected residents in eight Texas metropolitan areas through a bilingual telephone survey in July 2021. Statistical analysis comprised multivariable generalized estimating equations that control for relevant sociodemographic and COVID-related risk factors, and spatial clustering. RESULTS Disabled survey respondents had been more adversely affected by COVID-19 than nondisabled respondents, in terms of mental and physical health, health care access, living conditions and social life. Significant disparities were also found for almost all COVID-19 impacts when the disabled category was disaggregated by disability type. Respondents experiencing cognitive and independent living difficulties were negatively impacted in all five areas of life examined. CONCLUSIONS Findings emphasize the need to consider a wide range of impacts associated with the COVID-19 pandemic that negatively affect the health and social wellbeing of disabled persons, as well as develop disability-inclusive policies that provide adequate protections.
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Affiliation(s)
- J Chakraborty
- Department of Sociology & Anthropology, The University of Texas at El Paso, El Paso, TX 79968, USA
| | - S E Grineski
- Department of Sociology, University of Utah, Salt Lake City, UT 84112, USA
| | - T W Collins
- Department of Geography, University of Utah, Salt Lake City, UT 84112, USA
| | - J J Aun
- Department of Sociology & Anthropology, The University of Texas at El Paso, El Paso, TX 79968, USA
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Chakraborty J, Chakraborty S, Chakraborty S, Narayan MN. Entanglement of MAPK pathways with gene expression and its omnipresence in the etiology for cancer and neurodegenerative disorders. Biochim Biophys Acta Gene Regul Mech 2023; 1866:194988. [PMID: 37739217 DOI: 10.1016/j.bbagrm.2023.194988] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 09/14/2023] [Accepted: 09/18/2023] [Indexed: 09/24/2023]
Abstract
Mitogen Activated Protein Kinase (MAPK) is one of the most well characterized cellular signaling pathways that controls fundamental cellular processes including proliferation, differentiation, and apoptosis. These cellular functions are consequences of transcription of regulatory genes that are influenced and regulated by the MAP-Kinase signaling cascade. MAP kinase components such as Receptor Tyrosine Kinases (RTKs) sense external cues or ligands and transmit these signals via multiple protein complexes such as RAS-RAF, MEK, and ERKs and eventually modulate the transcription factors inside the nucleus to induce transcription and other regulatory functions. Aberrant activation, dysregulation of this signaling pathway, and genetic alterations in any of these components results in the developmental disorders, cancer, and neurodegenerative disorders. Over the years, the MAPK pathway has been a prime pharmacological target, to treat complex human disorders that are genetically linked such as cancer, Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. The current review re-visits the mechanism of MAPK pathways in gene expression regulation. Further, a current update on the progress of the mechanistic understanding of MAPK components is discussed from a disease perspective.
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Affiliation(s)
- Joydeep Chakraborty
- Institute for Advancing Health through Agriculture, Texas A&M Agrilife, College Station, TX, USA
| | - Sayan Chakraborty
- Department of Anesthesiology, Weill Cornell School of Medicine, New York, USA
| | - Sohag Chakraborty
- Human Oncology & Pathogenesis Program (HOPP), Memorial Sloan Kettering Cancer Center, New York, USA
| | - Mahesh N Narayan
- Department of Chemistry and Biochemistry, University of Texas, El Paso, TX, USA.
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Chakraborty J. Microbiota and the plant immune system work together to defend against pathogens. Arch Microbiol 2023; 205:347. [PMID: 37778013 DOI: 10.1007/s00203-023-03684-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/25/2023] [Accepted: 09/10/2023] [Indexed: 10/03/2023]
Abstract
Plants are exposed to a myriad of microorganisms, which can range from helpful bacteria to deadly disease-causing pathogens. The ability of plants to distinguish between helpful bacteria and dangerous pathogens allows them to continuously survive under challenging environments. The investigation of the modulation of plant immunity by beneficial microbes is critical to understand how they impact plant growth improvement and defense against invasive pathogens. Beneficial bacterial populations can produce significant impact on plant immune responses, including regulation of immune receptors activity, MITOGEN-ACTIVATED PROTEIN KINASE (MAPK) activation, transcription factors, and reactive oxygen species (ROS) signaling. To establish themselves, beneficial bacterial populations likely reduce plant immunity. These bacteria help plants to recover from various stresses and resume a regular growth pattern after they have been established. Contrarily, pathogens prevent their colonization by releasing toxins into plant cells, which have the ability to control the local microbiota via as-yet-unidentified processes. Intense competition among microbial communities has been found to be advantageous for plant development, nutrient requirements, and activation of immune signaling. Therefore, to protect themselves from pathogens, plants may rely on the beneficial microbiota in their environment and intercommunity competition amongst microbial communities.
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Affiliation(s)
- Joydeep Chakraborty
- Tel Aviv University, School of Plant Sciences and Food Security, Tel-Aviv, Israel.
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King WW, Richhart R, Culpepper T, Mota M, Banerjee D, Ismael M, Chakraborty J, Ladna M, Khan W, Ruiz N, Wilson J, Altshuler E, Clark V, Cabrera R. Adherence to guideline-directed hepatocellular carcinoma screening: A single-center US experience. World J Hepatol 2023; 15:410-418. [PMID: 37034234 PMCID: PMC10075011 DOI: 10.4254/wjh.v15.i3.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/16/2023] [Accepted: 02/21/2023] [Indexed: 03/22/2023] Open
Abstract
BACKGROUND The American Association for the Study of Liver Disease recommends screening patients with cirrhosis for hepatocellular carcinoma (HCC) using imaging with or without alpha-fetoprotein every six months. Unfortunately, screening rates remain inadequate.
AIM To assess root causes of screening failure in a subspecialty hepatology clinic.
METHODS The authors identified patients with cirrhosis seen in a subspecialty hepatology clinic and determined whether they underwent appropriate screening, defined as two cross-sectional images between five and seven months apart. The authors characterized the primary driver of screening failure. Finally, other hepatologists were surveyed to determine provider perceptions of screening failure causes.
RESULTS 1034 patients were identified with an average age of 61 years and a mean MELD of 8.1 ± 3.8. Hepatitis C virus was the most common cirrhosis etiology. 489 (47%) underwent appropriate screening. No demographic or clinical differences were detected between those who underwent appropriate screening and those who did not. The most common etiologies of screening failure, in descending order, were: radiology unable to schedule timely imaging, provider did not order imaging, patient canceled follow up appointment, appointments scheduled too far apart, lost to follow up, no-show to radiology appointment, and provider canceled appointment. Hepatologists surveyed believed the most common cause of screening failure was no-show to radiology.
CONCLUSION Rates of screening were poor even in a subspecialty hepatology clinic. Screening failure was mostly due to systemic factors such as radiology availability and time between hepatology appointments rather than individual error.
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Affiliation(s)
- William W King
- Department of Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Raymond Richhart
- Department of Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Tyler Culpepper
- Department of Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Maneola Mota
- Department of Gastroenterology, University of Florida, Gainesville, FL 32610, United States
| | - Debdeep Banerjee
- Department of Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Media Ismael
- Department of Gastroenterology, University of Florida, Gainesville, FL 32610, United States
| | - Joydeep Chakraborty
- Department of Gastroenterology, University of Florida, Gainesville, FL 32610, United States
| | - Michael Ladna
- Department of Hospital Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Walid Khan
- Department of Hospital Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Nicole Ruiz
- Department of Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Jake Wilson
- Department of Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Ellery Altshuler
- Department of Medicine, University of Florida, Gainesville, FL 32610, United States
| | - Virginia Clark
- Department of Gastroenterology, University of Florida, Gainesville, FL 32610, United States
| | - Roniel Cabrera
- Department of Gastroenterology, University of Florida, Gainesville, FL 32610, United States
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Chakraborty J, Maity A, Sarkar H. A systematic drug repurposing approach to identify promising inhibitors from FDA-approved drugs against Nsp4 protein of SARS-CoV-2. J Biomol Struct Dyn 2023; 41:550-559. [PMID: 34844509 DOI: 10.1080/07391102.2021.2009033] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
COVID-19 is caused by SARS-CoV-2 and responsible for the ongoing global pandemic in the world. After more than a year, we are still in lurch to combat and control the situation. Therefore, new therapeutic options to control the ongoing COVID-19 are urgently in need. In our study, we found that nonstructural protein 4 (Nsp4) of SARS-CoV-2 could be a potential target for drug repurposing. Due to availability of only the crystal structure of C-terminal domain of Nsp4 (Ct-Nsp4) and its crucial participation in viral RNA synthesis, we have chosen Ct-Nsp4 as a target for screening the 1600 FDA-approved drugs using molecular docking. Top 102 drugs were found to have the binding energy equal or less than -7.0 kcal/mol. Eribulin and Suvorexant were identified as the two most promising drug molecules based on the docking score. The dynamics of Ct-Nsp4-drug binding was monitored using 100 ns molecular dynamics simulations. From binding free energy calculation over the simulation, both the drugs were found to have considerable binding energy. The present study has identified Eribulin and Suvorexant as promising drug candidates. This finding will be helpful to accelerate the drug discovery process against COVID-19 disease.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Atanu Maity
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
| | - Hironmoy Sarkar
- Department of Microbiology, Raiganj University, Raiganj, West Bengal, India
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Rahmanov N, Varshney N, Chakraborty J. An Interesting Case of Acute Colitis Possibly Associated with Deposition of Pharmaceutical Fillers. Am J Clin Pathol 2022. [DOI: 10.1093/ajcp/aqac126.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract
Introduction/Objective
Crospovidone and microcrystalline cellulose, known as pharmaceutical fillers, are nonabsorbable and insoluble white powders. They are widely used in the pharmaceutical and food industries to facilitate the delivery of consumed substances and can be identified in pathological specimens from the gastrointestinal tract. Here, we report a case of diarrhea and colonic inflammation associated with extensive deposition of crospovidone and microcrystalline cellulose within the colonic mucosa.
Methods/Case Report
A 49-year-old male with no significant past medical history presented with abdominal pain and diarrhea for 3 weeks. CT abdomen showed wall thickening and inflammatory stranding throughout the colon, and area with possible pneumatosis coli versus pseudo-pneumatosis. Colonoscopy revealed segmental involvement with congested, erythematous and friable mucosa confined to hepatic flexure, transverse colon and splenic flexure. The biopsies of these areas showed colonic mucosa with chronic and acute inflammation, architectural distortion of the glands, melanosis coli, and extensive deposition of foreign body material within the mucosa. Closer microscopic examination of the foreign body material revealed an aggregate of coral-shaped particles with a pink center and purple periphery, which were non-birefringent under polarized light, consistent with crospovidone. Also, there was an extensive deposition of aggregates of polygonal, transparent fragments which appeared brightly birefringent under polarized light, consistent with microcrystalline cellulose. The patient denied the usage of laxatives.
Results (if a Case Study enter NA)
NA.
Conclusion
Although the data does not suggest an association between the presence of pharmaceutical fillers within the gastrointestinal tract and mucosal injury, our case suggests the possibility of associated colitis. Here, extensive mucosal deposition of crospovidone and microcrystalline cellulose shows possible association with endoscopic findings of congested and inflamed colonic mucosa, supported by microscopic examination of the sampled tissue. Hence, more investigation of iatrogenic foreign body materials, such as pharmaceutical fillers is required for optimal patient care.
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Affiliation(s)
- N Rahmanov
- Pathology, University of Mississippi Medical Center , Flowood, Mississippi , United States
| | - N Varshney
- Pathology, University of Mississippi Medical Center , Flowood, Mississippi , United States
| | - J Chakraborty
- Division of Gastroenterology and Hepatology, University of Mississippi Medical Center , Jackson, Mississippi , United States
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Chakraborty J, Chaudhary AA, Khan SUD, Rudayni HA, Rahaman SM, Sarkar H. CRISPR/Cas-Based Biosensor As a New Age Detection Method for Pathogenic Bacteria. ACS Omega 2022; 7:39562-39573. [PMID: 36385843 PMCID: PMC9648122 DOI: 10.1021/acsomega.2c04513] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 10/03/2022] [Indexed: 05/25/2023]
Abstract
Methods enabling rapid and on-site detection of pathogenic bacteria are a prerequisite for public health assurance, medical diagnostics, ensuring food safety and security, and research. Many current bacteria detection technologies are inconvenient and time-consuming, making them unsuitable for field detection. New technology based on the CRISPR/Cas system has the potential to fill the existing gaps in detection. The clustered regularly interspaced short palindromic repeats (CRISPR) system is a part of the bacterial adaptive immune system to protect them from intruding bacteriophages. The immunological memory is saved by the CRISPR array of bacteria in the form of short DNA sequences (spacers) from invading viruses and incorporated with the CRISPR DNA repeats. Cas proteins are responsible for triggering and initiating the adaptive immune function of CRISPR/Cas systems. In advanced biological research, the CRISPR/Cas system has emerged as a significant tool from genome editing to pathogen detection. By considering its sensitivity and specificity, this system can become one of the leading detection methods for targeting DNA/RNA. This technique is well applied in virus detection like Dengue, ZIKA, SARS-CoV-2, etc., but for bacterial detection, this CRISPR/Cas system is limited to only a few organisms to date. In this review, we have discussed the different techniques based on the CRISPR/Cas system that have been developed for the detection of various pathogenic bacteria like L. monocytogenes, M. tuberculosis, Methicillin-resistant S. aureus, Salmonella, E. coli, P. aeruginosa, and A. baumannii.
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Affiliation(s)
- Joydeep Chakraborty
- Department
of Microbiology, Raiganj University, Raiganj, West Bengal733134, India
| | - Anis Ahmad Chaudhary
- Department
of Biology, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh11623, Saudi
Arabia
| | - Salah-Ud-Din Khan
- Department
of Biochemistry, College of Medicine, Imam
Mohammad Ibn Saud Islamic University (IMSIU), Riyadh11623, Saudi
Arabia
| | - Hassan Ahmad Rudayni
- Department
of Biology, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh11623, Saudi
Arabia
| | | | - Hironmoy Sarkar
- Department
of Microbiology, Raiganj University, Raiganj, West Bengal733134, India
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Sobol G, Chakraborty J, Martin GB, Sessa G. The Emerging Role of PP2C Phosphatases in Tomato Immunity. Mol Plant Microbe Interact 2022; 35:737-747. [PMID: 35696659 DOI: 10.1094/mpmi-02-22-0037-cr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The antagonistic effect of plant immunity on growth likely drove evolution of molecular mechanisms that prevent accidental initiation and prolonged activation of plant immune responses. Signaling networks of pattern-triggered and effector-triggered immunity, the two main layers of plant immunity, are tightly regulated by the activity of protein phosphatases that dephosphorylate their protein substrates and reverse the action of protein kinases. Members of the PP2C class of protein phosphatases have emerged as key negative regulators of plant immunity, primarily from research in the model plant Arabidopsis thaliana, revealing the potential to employ PP2C proteins to enhance plant disease resistance. As a first step towards focusing on the PP2C family for both basic and translational research, we analyzed the tomato genome sequence to ascertain the complement of the tomato PP2C family, identify conserved protein domains and signals in PP2C amino acid sequences, and examine domain combinations in individual proteins. We then identified tomato PP2Cs that are candidate regulators of single or multiple layers of the immune signaling network by in-depth analysis of publicly available RNA-seq datasets. These included expression profiles of plants treated with fungal or bacterial pathogen-associated molecular patterns, with pathogenic, nonpathogenic, and disarmed bacteria, as well as pathogenic fungi and oomycetes. Finally, we discuss the possible use of immunity-associated PP2Cs to better understand the signaling networks of plant immunity and to engineer durable and broad disease resistance in crop plants. [Formula: see text] Copyright © 2022 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Guy Sobol
- School of Plant Sciences and Food Security, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, 69978 Tel-Aviv, Israel
| | - Joydeep Chakraborty
- School of Plant Sciences and Food Security, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, 69978 Tel-Aviv, Israel
| | - Gregory B Martin
- Boyce Thompson Institute for Plant Research, Ithaca, NY 14853, U.S.A
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, U.S.A
| | - Guido Sessa
- School of Plant Sciences and Food Security, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, 69978 Tel-Aviv, Israel
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Hazra A, Mandal S, Chakraborty J. W040 Relationship of neutrophil-lymphocyte-ratio and platelet counts with parathormone, and how they are affected by gender, age and sugar levels in maintenance hemodialysis patients in India. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Sadat A, Biswas T, Cardoso MH, Mondal R, Ghosh A, Dam P, Nesa J, Chakraborty J, Bhattacharjya D, Franco OL, Gangopadhyay D, Mandal AK. Silkworm pupae as a future food with nutritional and medicinal benefits. Curr Opin Food Sci 2022. [DOI: 10.1016/j.cofs.2022.100818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gupta I, Chakraborty J, Roy S, Farinas ET, Mitra S. Synergistic Effects of Microwave Radiation and Nanocarbon Immobilized Membranes in the Generation of Bacteria-Free Water via Membrane Distillation. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c02021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Indrani Gupta
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Joydeep Chakraborty
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Sagar Roy
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Edgardo T. Farinas
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Somenath Mitra
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
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Mpofu E, Alias A, Tomita K, Suzuki-Minakuchi C, Tomita K, Chakraborty J, Malon M, Ogura Y, Takikawa H, Okada K, Kimura T, Nojiri H. Azoxystrobin amine: A novel azoxystrobin degradation product from Bacillus licheniformis strain TAB7. Chemosphere 2021; 273:129663. [PMID: 33515965 DOI: 10.1016/j.chemosphere.2021.129663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/26/2020] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Azoxystrobin (AZ) is a broad-spectrum synthetic fungicide widely used in agriculture globally. However, there are concerns about its fate and effects in the environment. It is reportedly transformed into azoxystrobin acid as a major metabolite by environmental microorganisms. Bacillus licheniformis strain TAB7 is used as a compost deodorant in commercial compost and has been found to degrade some phenolic and agrochemicals compounds. In this article, we report its ability to degrade azoxystrobin by novel degradation pathway. Biotransformation analysis followed by identification by electrospray ionization-mass spectrometry (MS), high-resolution MS, and nuclear magnetic resonance spectroscopy identified methyl (E)-3-amino-2-(2-((6-(2-cyanophenoxy)pyrimidin-4-yl)oxy)phenyl)acrylate, or (E)-azoxystrobin amine in short, and (Z) isomers of AZ and azoxystrobin amine as the metabolites of (E)-AZ by TAB7. Bioassay testing using Magnaporthe oryzae showed that although 40 μg/mL of (E)-AZ inhibited 59.5 ± 3.5% of the electron transfer activity between mitochondrial Complexes I and III in M. oryzae, the same concentration of (E)-azoxystrobin amine inhibited only 36.7 ± 15.1% of the activity, and a concentration of 80 μg/mL was needed for an inhibition rate of 56.8 ± 7.4%, suggesting that (E)-azoxystrobin amine is less toxic than the parent compound. To our knowledge, this is the first study identifying azoxystrobin amine as a less-toxic metabolite from bacterial AZ degradation and reporting on the enzymatic isomerization of (E)-AZ to (Z)-AZ, to some extent, by TAB7. Although the fate of AZ in the soil microcosm supplemented with TAB7 will be needed, our findings broaden our knowledge of possible AZ biotransformation products.
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Affiliation(s)
- Enock Mpofu
- Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Amirah Alias
- Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan; Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Keisuke Tomita
- Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Chiho Suzuki-Minakuchi
- Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan; Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Kenji Tomita
- Department of Applied Biological Chemistry, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Joydeep Chakraborty
- Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Michal Malon
- JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo, 196-8558, Japan
| | - Yusuke Ogura
- Department of Applied Biochemistry, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Hirosato Takikawa
- Department of Applied Biochemistry, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Kazunori Okada
- Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Toshiaki Kimura
- Agriculture and Biotechnology Business Division, Toyota Motor Corporation, 1099 Marune, Kurozasa-cho, Miyoshi-shi, Aichi, 470-0201, Japan
| | - Hideaki Nojiri
- Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan; Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, 113-8657, Japan.
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Chakraborty J. In-silico structural analysis of Pseudomonas syringae effector HopZ3 reveals ligand binding activity and virulence function. J Plant Res 2021; 134:599-611. [PMID: 33730245 DOI: 10.1007/s10265-021-01274-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Bacterial acetyltransferase effectors belonging to the Yersinia outer protein J (YopJ) group inhibit multiple immune signaling pathways in human and plants. The present study determines in-silico acetyl-coenzyme A (AcCoA) binding and Arabidopsis immune regulator RPM1-interacting protein4 (RIN4) peptide interactions to YopJ effector hypersensitivity and pathogenesis-dependent outer proteinZ3 (HopZ3) from Pseudomonas syringae. Phylogenetic analysis revealed that HopZ3 was clustered by acetyltransferase effectors from plant bacterial pathogens. Structural juxtaposition shows HopZ3 comprises topology matched closer with HopZ1a than PopP2 effectors, respectively. AcCoA binds HopZ3 at two sites i.e., substrate binding pocket and catalytic site. AcCoA interactions to substrate binding pocket was transient and dissipated upon in-silico mutation of Ser 279 residue whereas, attachment to catalytic site was found to be stable in the presence of inositol hexaphosphate (IP6) as a co-factor. Interface atoms used for measuring hydrogen bond distances, bound or accessible surface area, and root-mean-square fluctuation (RMSF) values, suggests that the HopZ3 complex stabilizes after binding to AcCoA ligand and RIN4 peptide. The few non-conserved polymorphic residues that have been displayed on HopZ3 surface presumably confer intracellular recognitions within hosts. Collectively, homology modeling and interactive docking experiments were used to substantiate Arabidopsis immune 'guardee' interactions to HopZ3.
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Gupta I, Chakraborty J, Roy S, Farinas ET, Mitra S. Nanocarbon immobilized membranes for generating bacteria and endotoxin free water via membrane distillation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118133] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Chakraborty J, Ghosh P. Advancement of research on plant NLRs evolution, biochemical activity, structural association, and engineering. Planta 2020; 252:101. [PMID: 33180185 DOI: 10.1007/s00425-020-03512-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 11/03/2020] [Indexed: 06/11/2023]
Abstract
In this review, we have included evolution of plant intracellular immune receptors, oligomeric complex formation, enzymatic action, engineering, and mechanisms of immune inspection for appropriate defense outcomes. NLR (Nucleotide binding oligomerization domain containing leucine-rich repeat) proteins are the intracellular immune receptors that recognize pathogen-derived virulence factors to confer effector-triggered immunity (ETI). Activation of plant defense by the NLRs are often conveyed through N-terminal Toll-like/ IL-1 receptor (TIR) or non-TIR (coiled-coils or CC) domains. Homodimerization or self-association property of CC/ TIR domains of plant NLRs contribute to their auto-activity and induction of in planta ectopic cell death. High resolution crystal structures of Arabidopsis thaliana RPS4TIR, L6TIR, SNC1TIR, RPP1TIR and Muscadinia rotundifolia RPV1TIR showed that interaction is mediated through one or two distinct interfaces i.e., αA and αE helices comprise AE interface and αD and αE helices were found to form DE interface. By contrast, conserved helical regions were determined for CC domains of plant NLRs. Evolutionary history of NLRs diversification has shown that paired forms were originated from NLR singletons. Plant TIRs executed NAD+ hydrolysis activity for cell death promotion. Plant NLRs were found to form large oligomeric complexes as observed in animal inflammasomes. We have also discussed different protein engineering methods includes domain shuffling, and decoy modification that increase effector recognition spectrum of plant NLRs. In summary, our review highlights structural basis of perception of the virulence factors by NLRs or NLR pairs to design novel classes of plant immune receptors.
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Affiliation(s)
| | - Prithwi Ghosh
- Department of Botany, Narajole Raj College, Narajole, Paschim Medinipur, 721211, West Bengal, India
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Chakraborty J, Zori AG, Cabrera R. Down staging of hepatocellular carcinoma—can we push the boundaries? Hepatobiliary Surg Nutr 2020; 9:540-542. [DOI: 10.21037/hbsn.2019.11.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Chakraborty J, Sen S, Ghosh P, Jain A, Das S. Inhibition of multiple defense responsive pathways by CaWRKY70 transcription factor promotes susceptibility in chickpea under Fusarium oxysporum stress condition. BMC Plant Biol 2020; 20:319. [PMID: 32631232 PMCID: PMC7336453 DOI: 10.1186/s12870-020-02527-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 06/26/2020] [Indexed: 05/21/2023]
Abstract
BACKGROUND Suppression and activation of plant defense genes is comprehensively regulated by WRKY family transcription factors. Chickpea, the non-model crop legume suffers from wilt caused by Fusarium oxysporum f. sp. ciceri Race1 (Foc1), defense response mechanisms of which are poorly understood. Here, we attempted to show interaction between WRKY70 and several downstream signaling components involved in susceptibility/resistance response in chickpea upon challenge with Foc1. RESULTS In the present study, we found Cicer arietinum L. WRKY70 (CaWRKY70) negatively governs multiple defense responsive pathways, including Systemic Acquired Resistance (SAR) activation in chickpea upon Foc1 infection. CaWRKY70 is found to be significantly accumulated at shoot tissues of susceptible (JG62) chickpea under Foc1 stress and salicylic acid (SA) application. CaWRKY70 overexpression promotes susceptibility in resistant chickpea (WR315) plants to Foc1 infection. Transgenic plants upon Foc1 inoculation demonstrated suppression of not only endogenous SA concentrations but expression of genes involved in SA signaling. CaWRKY70 overexpressing chickpea roots exhibited higher ion-leakage and Foc1 biomass accumulation compared to control transgenic (VC) plants. CaWRKY70 overexpression suppresses H2O2 production and resultant reactive oxygen species (ROS) induced cell death in Foc1 infected chickpea roots, stem and leaves. Being the nuclear targeted protein, CaWRKY70 suppresses CaMPK9-CaWRKY40 signaling in chickpea through its direct and indirect negative regulatory activities. Protein-protein interaction study revealed CaWRKY70 and CaRPP2-like CC-NB-ARC-LRR protein suppresses hyper-immune signaling in chickpea. Together, our study provides novel insights into mechanisms of suppression of the multiple defense signaling components in chickpea by CaWRKY70 under Foc1 stress. CONCLUSION CaWRKY70 mediated defense suppression unveils networking between several immune signaling events negatively affecting downstream resistance mechanisms in chickpea under Foc1 stress.
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Affiliation(s)
- Joydeep Chakraborty
- Present Address: Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal 700054 India
| | - Senjuti Sen
- Present Address: Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal 700054 India
| | - Prithwi Ghosh
- Present Address: Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal 700054 India
- Present Address: Institute of Biological Chemistry, Washington State University, Pullman, Washington, USA
| | - Akansha Jain
- Present Address: Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal 700054 India
| | - Sampa Das
- Present Address: Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal 700054 India
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Chakraborty J, Stover PJ. Deoxyuracil in DNA in health and disease. Curr Opin Clin Nutr Metab Care 2020; 23:247-252. [PMID: 32398439 PMCID: PMC7347158 DOI: 10.1097/mco.0000000000000660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Genome instability has long been implicated as a primary causal factor in cancer and diseases of aging. The genome is constantly under attack from extrinsic and intrinsic damaging agents. Uracil misincorporation in DNA and its repair is an intrinsic factor resulting in genomic instability and DNA mutations. Additionally, the presence of uracil in DNA can modify gene expression by interfering with promoter binding and transcription inhibition or upregulation of apoptotic proteins. In immune cells, uracil in DNA drives beneficial genomic diversity for antigen-driven immunity. This review addresses diseases that are linked to uracil accumulation in DNA, its causes, consequences, and the associated biomarkers of risk factors. RECENT FINDINGS Elevated genomic uracil is associated with megaloblastic anemia, neural tube defects, and retroviral immunity. Current evidence supporting causal mechanisms and nutritional interventions that rescue impaired pathways associated with uracil accumulation in DNA are summarized in this review. SUMMARY Nutritional deficiencies in B vitamins can cause uracil misincorporation into DNA leading to genome instability and associated diseases. Nutritional approaches to preventing uracil accumulation in DNA show some promise to address its associated diseases, but additional randomized controlled trials are needed.
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Affiliation(s)
| | - Patrick J. Stover
- All correspondence must be addressed to: Patrick J. Stover: Agriculture and Life Sciences Building, 600 John Kimbrough Blvd, Suite 510, 2142 TAMU, College Station, TX 77843; 979-862-4384
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Sarkar J, Dutta A, Pal Chowdhury P, Chakraborty J, Dutta TK. Characterization of a novel family VIII esterase EstM2 from soil metagenome capable of hydrolyzing estrogenic phthalates. Microb Cell Fact 2020; 19:77. [PMID: 32209105 PMCID: PMC7092541 DOI: 10.1186/s12934-020-01336-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/18/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Microbes are rich sources of enzymes and esterases are one of the most important classes of enzymes because of their potential for application in the field of food, agriculture, pharmaceuticals and bioremediation. Due to limitations in their cultivation, only a small fraction of the complex microbial communities can be cultured from natural habitats. Thus to explore the catalytic potential of uncultured organisms, the metagenomic approach has turned out to be an effective alternative method for direct mining of enzymes of interest. Based on activity-based screening method, an esterase-positive clone was obtained from metagenomic libraries. RESULTS Functional screening of a soil metagenomic fosmid library, followed by transposon mutagenesis led to the identification of a 1179 bp esterase gene, estM2, that encodes a 392 amino acids long protein (EstM2) with a translated molecular weight of 43.12 kDa. Overproduction, purification and biochemical characterization of the recombinant protein demonstrated carboxylesterase activity towards short-chain fatty acyl esters with optimal activity for p-nitrophenyl butyrate at pH 8.0 and 37 °C. Amino acid sequence analysis and subsequent phylogenetic analysis suggested that EstM2 belongs to the family VIII esterases that bear modest similarities to class C β-lactamases. EstM2 possessed the conserved S-x-x-K motif of class C β-lactamases but did not exhibit β-lactamase activity. Guided by molecular docking analysis, EstM2 was shown to hydrolyze a wide range of di- and monoesters of alkyl-, aryl- and benzyl-substituted phthalates. Thus, EstM2 displays an atypical hydrolytic potential of biotechnological significance within family VIII esterases. CONCLUSIONS This study has led to the discovery of a new member of family VIII esterases. To the best of our knowledge, this is the first phthalate hydrolase (EstM2), isolated from a soil metagenomic library that belongs to a family possessing β-lactamase like catalytic triad. Based on its catalytic potential towards hydrolysis of both phthalate diesters and phthalate monoesters, this enzyme may find use to counter the growing pollution caused by phthalate-based plasticizers in diverse geological environment and in other aspects of biotechnological applications.
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Affiliation(s)
- Jayita Sarkar
- Department of Microbiology, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata, 700054, India
| | - Arindam Dutta
- Department of Microbiology, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata, 700054, India
| | - Piyali Pal Chowdhury
- Department of Microbiology, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata, 700054, India
| | - Joydeep Chakraborty
- Department of Microbiology, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata, 700054, India
| | - Tapan K Dutta
- Department of Microbiology, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata, 700054, India.
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Mpofu E, Chakraborty J, Suzuki-Minakuchi C, Okada K, Kimura T, Nojiri H. Biotransformation of Monocyclic Phenolic Compounds by Bacillus licheniformis TAB7. Microorganisms 2019; 8:microorganisms8010026. [PMID: 31877822 PMCID: PMC7022639 DOI: 10.3390/microorganisms8010026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 01/23/2023] Open
Abstract
Bacillus licheniformis strain TAB7 is a bacterium used as a commercial deodorizing agent for compost in Japan. In this work, its ability to biotransform the following monocyclic phenolic compounds was assessed: ferulate, vanillate, p-coumarate, caffeate, protocatechuate, syringate, vanillin, and cinnamate (a precursor for some phenolic compounds). These compounds are abundant in composting material and are reported to have allelopathic properties. They come from sources such as plant material decomposition or agro-industrial waste. Biotransformation assays were carried out in LB supplemented with 0.2 mg/mL of an individual phenolic compound and incubated for up to 15 days followed by extraction and HPLC analysis. The results showed that TAB7 could biotransform ferulate, caffeate, p-coumarate, vanillate, protocatechuate, and vanillin. It, however, had a poor ability to transform cinnamate and syringate. LC-MS/MS analysis showed that ferulate was transformed into 4-vinylguaiacol as the final product, while caffeate was transformed into 4-ethylcatechol. TAB7 genome analysis suggested that, while TAB7 may not mineralize phenolic compounds, it harbored genes possibly encoding phenolic acid decarboxylase, vanillate decarboxylase, and some protocatechuate degradation pathway enzymes, which are involved in the catabolism of phenolic compounds known to have negative allelopathy on some plants. The results thus suggested that TAB7 can reduce such phenolic compounds in compost.
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Affiliation(s)
- Enock Mpofu
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Joydeep Chakraborty
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Chiho Suzuki-Minakuchi
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kazunori Okada
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Toshiaki Kimura
- Agriculture and Biotechnology Business Division, Toyota Motor Corporation, 1099 Marune, Kurozasa-cho, Miyoshi-shi, Aichi 470-0201, Japan
| | - Hideaki Nojiri
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
- Correspondence: ; Tel.: +81-3-5841-3067
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Chakraborty J, Nemeria NS, Zhang X, Nareddy PR, Szostak M, Farinas E, Jordan F. Engineering 2‐
oxoglutarate
dehydrogenase to a 2‐oxo
aliphatic
dehydrogenase complex by optimizing consecutive components. AIChE J 2019. [DOI: 10.1002/aic.16769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joydeep Chakraborty
- Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark New Jersey
| | | | - Xu Zhang
- Department of Chemistry Rutgers University Newark New Jersey
| | | | - Michal Szostak
- Department of Chemistry Rutgers University Newark New Jersey
| | - Edgardo Farinas
- Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark New Jersey
| | - Frank Jordan
- Department of Chemistry Rutgers University Newark New Jersey
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Dora JK, Sengupta A, Ghosh S, Yedla N, Chakraborty J. Stress evolution with concentration-dependent compositional expansion in a silicon lithium-ion battery anode particle. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04353-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chakraborty J, Ghosh P, Sen S, Nandi AK, Das S. CaMPK9 increases the stability of CaWRKY40 transcription factor which triggers defense response in chickpea upon Fusarium oxysporum f. sp. ciceri Race1 infection. Plant Mol Biol 2019; 100:411-431. [PMID: 30953279 DOI: 10.1007/s11103-019-00868-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 04/01/2019] [Indexed: 05/28/2023]
Abstract
Physical interaction and phosphorylation by CaMPK9 protects the degradation of CaWRKY40 that induces resistance response in chickpea to Fusarium wilt disease by modulating the transcription of defense responsive genes. WRKY transcription factors (TFs) are the global regulators of plant defense signaling that modulate immune responses in host plants by regulating transcription of downstream target genes upon challenged by pathogens. However, very little is known about immune responsive role of Cicer arietinum L. (Ca) WRKY TFs particularly. Using two contrasting chickpea genotypes with respect to resistance against Fusarium oxysporum f. sp. ciceri Race1 (Foc1), we demonstrate transcript accumulation of different CaWRKYs under multiple stresses and establish that CaWRKY40 triggers defense. CaWRKY40 overexpressing chickpea mounts resistance to Foc1 by positively modulating the defense related gene expression. EMSA, ChIP assay and real-time PCR analyses suggest CaWRKY40 binds at the promoters and positively regulates transcription of CaDefensin and CaWRKY33. Further studies revealed that mitogen Activated Protein Kinase9 (CaMPK9) phosphorylates CaWRKY40 by directly interacting with its two canonical serine residues. Interestingly, CaMPK9 is unable to interact with CaWRKY40 when the relevant two serine residues were replaced by alanine. Overexpression of serine mutated WRKY40 isoform in chickpea fails to provide resistance against Foc1. Mutated WRKY40Ser.224/225 to AA overexpressing chickpea resumes its ability to confer resistance against Foc1 after application of 26S proteasomal inhibitor MG132, suggests that phosphorylation is essential to protect CaWRKY40 from proteasomal degradation. CaMPK9 silencing also led to susceptibility in chickpea to Foc1. Altogether, our results elucidate positive regulatory roles of CaMPK9 and CaWRKY40 in modulating defense response in chickpea upon Foc1 infection.
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Affiliation(s)
- Joydeep Chakraborty
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal, 700054, India
| | - Prithwi Ghosh
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal, 700054, India
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
| | - Senjuti Sen
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal, 700054, India
| | - Ashis Kumar Nandi
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Sampa Das
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, West Bengal, 700054, India.
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Chakraborty J, Ghosh P, Sen S, Das S. Epigenetic and transcriptional control of chickpea WRKY40 promoter activity under Fusarium stress and its heterologous expression in Arabidopsis leads to enhanced resistance against bacterial pathogen. Plant Sci 2018; 276:250-267. [PMID: 30348325 DOI: 10.1016/j.plantsci.2018.07.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/16/2018] [Accepted: 07/27/2018] [Indexed: 05/27/2023]
Abstract
Promoters of many defense related genes are enriched with W-box elements serving as binding sites for plant specific WRKY transcription factors. In this study, expression of WRKY40 transcription factor was analyzed in two contrasting susceptible (JG62) and resistant (WR315) genotypes of chickpea infected with Foc1. The resistant plants showed up-regulation of WRKY40 under Fusarium stress, whereas in susceptible plants WRKY40 expression was absent. Additionally, global changes in the histone modification patterns were studied in above two chickpea genotypes by immunoblotting and real-time PCR analyses under control and Fusarium infected conditions. Notably, region specific Histone 3 lysine 9 acetylation, a positive marker of transcription gets enriched at WRKY40 promoter during resistant interaction with Foc1. H3K9 Ac is less enriched at WRKY40 promoter in Foc1 infected susceptible plants. WRKY40 promoter activity was induced by jasmonic acid and pathogen treatment, while salicylic acid failed to stimulate such activity. Moreover, WRKY40 was found to bind to its own promoter and auto-regulates its activity. The present study also showed that heterologous over-expression of chickpea WRKY40 triggers defense response in Arabidopsis against Pseudomonas syringae. Overall, we present epigenetic and transcriptional control of WRKY40 in chickpea under Fusarium stress and its immunomodulatory role is tested in Arabidopsis.
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Affiliation(s)
- Joydeep Chakraborty
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
| | - Prithwi Ghosh
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
| | - Senjuti Sen
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
| | - Sampa Das
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
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Chakraborty J, Priya P, Dastidar SG, Das S. Physical interaction between nuclear accumulated CC-NB-ARC-LRR protein and WRKY64 promotes EDS1 dependent Fusarium wilt resistance in chickpea. Plant Sci 2018; 276:111-133. [PMID: 30348309 DOI: 10.1016/j.plantsci.2018.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 07/30/2018] [Accepted: 08/17/2018] [Indexed: 06/08/2023]
Abstract
Fusarium wilt is one of the most serious diseases affecting chickpea (Cicer arietinum L.). Here, we identified a putative Resistance Gene Analog (CaRGA) from chickpea, encoding a coiled-coil (CC) nucleotide-binding oligomerization domain (NB-ARC) containing leucine-rich repeat (LRR) protein (CC-NLR protein) that confers resistance against Fusarium oxysporum f. sp. ciceri race1 (Foc1). Over-expression and silencing of CaRGA in chickpea resulted in enhanced resistance and hyper-susceptibility, respectively against Foc1. Furthermore, defense response to Foc1 depends on CC-NLR interaction with WRKY64 transcription factor. CaRGA mediated wilt resistance largely compromised when WRKY64 was silenced. We also determined in planta intramolecular interactions and self-association of chickpea CC-NLR protein. The study shows CC domain suppressing auto-activation of the full-length CC-NLR protein in the absence of pathogen through self-inhibitory intramolecular interaction with NB-ARC domain, which is attenuated by self-interactions to LRR domain. Chickpea CC-NLR protein forms homocomplexes and then interacts with WRKY64. CC-NLR protein further phosphorylates WRKY64 thereby, ubiquitination and proteasome mediated degradation are protected. Phosphorylated WRKY64 with increased stability binds to EDS1 promoter and stimulates its transcription that induces in planta ectopic cell-death. The detailed analysis of CC-NLR and WRKY interactions provide a better understanding of the immune regulation by NLR proteins under biotic stresses.
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Affiliation(s)
- Joydeep Chakraborty
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
| | - Prerna Priya
- Centre of Excellence in Bioinformatics, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
| | - Shubhra Ghosh Dastidar
- Centre of Excellence in Bioinformatics, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
| | - Sampa Das
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata 700054, West Bengal, India.
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Abstract
Attenuation in the activity of the negative regulators or the hyperactivity of plant innate immune receptors often causes ectopic defense activation manifested in severe growth retardation and spontaneous lesion formations, referred to as autoimmunity. In this review, we have described the cellular and molecular basis of the development of autoimmune responses for their useful applications in plant defense. Plants are exposed to diverse disease-causing pathogens, which bring infections by taking over the control on host immune machineries. To counter the challenges of evolving pathogenic races, plants recruit specific types of intracellular immune receptors that mostly belong to the family of polymorphic nucleotide-binding oligomerization domain-containing leucine-rich repeat (NLR) proteins. Upon recognition of effector molecules, NLR triggers hyperimmune signaling, which culminates in the form of a typical programmed cell death, designated hypersensitive response. Besides, few plant NLRs also guard certain host proteins known as 'guardee' that are modified by effector proteins. However, this fine-tuned innate immune system can be lopsided upon knock-out of the alleles that correspond to the host guardees, which mimick the presence of pathogen. The absence of pathogens causes inappropriate activation of the respective NLRs and results in the constitutive activation of plant defense and exhibiting autoimmunity. In plants, autoimmune mutants are readily scorable due to their dwarf phenotype and development of characteristic macroscopic disease lesions. Here, we summarize recent reports on autoimmune response in plants, how it is triggered, and phenotypic consequences associated with this phenomenon.
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Affiliation(s)
- Joydeep Chakraborty
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India
| | - Prithwi Ghosh
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, 84602, USA
| | - Sampa Das
- Division of Plant Biology, Bose Institute, Centenary Campus, P-1/12, CIT Scheme-VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India.
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Chakraborty J, Nemeria NS, Farinas E, Jordan F. Catalysis of transthiolacylation in the active centers of dihydrolipoamide acyltransacetylase components of 2-oxo acid dehydrogenase complexes. FEBS Open Bio 2018; 8:880-896. [PMID: 29928569 PMCID: PMC5986005 DOI: 10.1002/2211-5463.12431] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 03/29/2018] [Accepted: 04/09/2018] [Indexed: 11/25/2022] Open
Abstract
The Escherichia coli 2‐oxoglutarate dehydrogenase complex (OGDHc) comprises multiple copies of three enzymes—E1o, E2o, and E3—and transthioesterification takes place within the catalytic domain of E2o. The succinyl group from the thiol ester of S8‐succinyldihydrolipoyl‐E2o is transferred to the thiol group of coenzyme A (CoA), forming the all‐important succinyl‐CoA. Here, we report mechanistic studies of enzymatic transthioesterification on OGDHc. Evidence is provided for the importance of His375 and Asp374 in E2o for the succinyl transfer reaction. The magnitude of the rate acceleration provided by these residues (54‐fold from each with alanine substitution) suggests a role in stabilization of the symmetrical tetrahedral oxyanionic intermediate by formation of two hydrogen bonds, rather than in acid–base catalysis. Further evidence ruling out a role in acid–base catalysis is provided by site‐saturation mutagenesis studies at His375 (His375Trp substitution with little penalty) and substitutions to other potential hydrogen bond participants at Asp374. Taking into account that the rate constant for reductive succinylation of the E2o lipoyl domain (LDo) by E1o and 2‐oxoglutarate (99 s−1) was approximately twofold larger than the rate constant for kcat of 48 s−1 for the overall reaction (NADH production), it could be concluded that succinyl transfer to CoA and release of succinyl‐CoA, rather than reductive succinylation, is the rate‐limiting step. The results suggest a revised mechanism of catalysis for acyl transfer in the superfamily of 2‐oxo acid dehydrogenase complexes, thus provide fundamental information regarding acyl‐CoA formation, so important for several biological processes including post‐translational succinylation of protein lysines. Enzymes 2‐oxoglutarate dehydrogenase (http://www.chem.qmul.ac.uk/iubmb/enzyme/EC1/2/4/2.html); dihydrolipoamide succinyltransferase (http://www.chem.qmul.ac.uk/iubmb/enzyme/EC2/3/1/61.html); dihydrolipoamide dehydrogenase (http://www.chem.qmul.ac.uk/iubmb/enzyme/EC1/8/1/4.html); pyruvate dehydrogenase (http://www.chem.qmul.ac.uk/iubmb/enzyme/EC1/2/4/1.html); dihydrolipoamide acetyltransferase (http://www.chem.qmul.ac.uk/iubmb/enzyme/EC2/3/1/12.html).
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Affiliation(s)
- Joydeep Chakraborty
- Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark NJ USA
| | | | - Edgardo Farinas
- Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark NJ USA
| | - Frank Jordan
- Department of Chemistry Rutgers University Newark NJ USA
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Chakraborty J, Jain A, Mukherjee D, Ghosh S, Das S. Functional diversification of structurally alike NLR proteins in plants. Plant Sci 2018; 269:85-93. [PMID: 29606220 DOI: 10.1016/j.plantsci.2018.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/14/2017] [Accepted: 01/15/2018] [Indexed: 06/08/2023]
Abstract
In due course of evolution many pathogens alter their effector molecules to modulate the host plants' metabolism and immune responses triggered upon proper recognition by the intracellular nucleotide-binding oligomerization domain containing leucine-rich repeat (NLR) proteins. Likewise, host plants have also evolved with diversified NLR proteins as a survival strategy to win the battle against pathogen invasion. NLR protein indeed detects pathogen derived effector proteins leading to the activation of defense responses associated with programmed cell death (PCD). In this interactive process, genome structure and plasticity play pivotal role in the development of innate immunity. Despite being quite conserved with similar biological functions in all eukaryotes, the intracellular NLR immune receptor proteins happen to be structurally distinct. Recent studies have made progress in identifying transcriptional regulatory complexes activated by NLR proteins. In this review, we attempt to decipher the intracellular NLR proteins mediated surveillance across the evolutionarily diverse taxa, highlighting some of the recent updates on NLR protein compartmentalization, molecular interactions before and after activation along with insights into the finer role of these receptor proteins to combat invading pathogens upon their recognition. Latest information on NLR sensors, helpers and NLR proteins with integrated domains in the context of plant pathogen interactions are also discussed.
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Affiliation(s)
- Joydeep Chakraborty
- Division of Plant Biology, Bose Institute, Centenary Campus, Kolkata, West Bengal, India.
| | - Akansha Jain
- Division of Plant Biology, Bose Institute, Centenary Campus, Kolkata, West Bengal, India.
| | - Dibya Mukherjee
- Division of Plant Biology, Bose Institute, Centenary Campus, Kolkata, West Bengal, India.
| | - Suchismita Ghosh
- Division of Plant Biology, Bose Institute, Centenary Campus, Kolkata, West Bengal, India; Department of Biotechnology, St. Xavier's College, Kolkata, West Bengal, India.
| | - Sampa Das
- Division of Plant Biology, Bose Institute, Centenary Campus, Kolkata, West Bengal, India.
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Khara P, Roy M, Chakraborty J, Dutta A, Dutta TK. Characterization of a topologically unique oxygenase from Sphingobium sp. PNB capable of catalyzing a broad spectrum of aromatics. Enzyme Microb Technol 2018; 111:74-80. [DOI: 10.1016/j.enzmictec.2017.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 08/25/2017] [Accepted: 10/16/2017] [Indexed: 11/25/2022]
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Westerveld D, Khullar V, Mramba L, Ayoub F, Brar T, Agarwal M, Forde J, Chakraborty J, Riverso M, Perbtani YB, Gupte A, Forsmark CE, Draganov P, Yang D. Adherence to quality indicators and surveillance guidelines in the management of Barrett's esophagus: a retrospective analysis. Endosc Int Open 2018; 6:E300-E307. [PMID: 29507870 PMCID: PMC5832463 DOI: 10.1055/s-0044-101351] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Accepted: 12/18/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Adherence to quality indicators and surveillance guidelines in the management of Barrett's esophagus (BE) promotes high-quality, cost-effective care. The aims of this study were (1) to evaluate adherence to standardized classification (Prague Criteria) and systematic (four-quadrant) biopsy protocol, (2) to identify predictors of practice patterns, and (3) to assess adherence to surveillance guidelines for non-dysplastic BE (NDBE). METHODS This was a single-center retrospective study of esophagogastroduodenoscopy (EGD) performed for BE (June 2008 to December 2015). Patient demographics, procedure characteristics, and histology results were obtained from the procedure report-generating database and chart review. Adherence to Prague Criteria and systematic biopsies was based on operative report documentation. Multiple logistic regression analysis was performed to identify predictors of practice patterns. Guideline adherent surveillance EGD was defined as those performed within 6 months of the recommended 3- to 5-year interval. RESULTS In total, 397 patients (66.5 % male; mean age 60.1 ± 12.5 years) had an index EGD during the study period. Adherence to Prague Criteria and systematic biopsies was 27.4 % and 24.1 %, respectively. Endoscopists who performed therapeutic interventions for BE were more likely to use the Prague Criteria (OR: 3.16; 95 %CI: 1.47 - 6.82; P < 0.01) than those who did not. Longer time in practice was positively associated with adherence to Prague Criteria (OR 1.07; 95 %CI: 1.02 - 1.12; P < 0.01) but with a lower likelihood of performing systematic biopsies (OR 0.91; 95 %CI: 0.85 - 0.97; P < 0.01). More than half (55.6 %) of patients with NDBE underwent surveillance EGD sooner (range 1 - 29 months) than the recommended interval. CONCLUSION Adherence to quality indicators and surveillance guidelines in BE is low. Operator characteristics, including experience with endoscopic therapy for BE and time in practice predicted practice pattern. Future efforts are needed to reduce variability in practice and promote high-value care.
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Affiliation(s)
- Donevan Westerveld
- Department of Internal Medicine, University of Florida, Gainesville, FL, USA
| | - Vikas Khullar
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | - Lazarus Mramba
- Statistics, Department of Internal Medicine, University of Florida, Gainesville, FL, USA
| | - Fares Ayoub
- Department of Internal Medicine, University of Florida, Gainesville, FL, USA
| | - Tony Brar
- Department of Internal Medicine, University of Florida, Gainesville, FL, USA
| | - Mitali Agarwal
- Department of Internal Medicine, University of Florida, Gainesville, FL, USA
| | - Justin Forde
- Department of Internal Medicine, University of Florida, Gainesville, FL, USA
| | - Joydeep Chakraborty
- Department of Internal Medicine, University of Florida, Gainesville, FL, USA
| | - Michael Riverso
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | - Yaseen B. Perbtani
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | - Anand Gupte
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | - Chris E. Forsmark
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | - Peter Draganov
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | - Dennis Yang
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
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Silva JS, Bierstock S, Douglas JV, Norcio AF, Chakraborty J, Srini J, Ball MJ. Failure to Provide Clinicians Useful IT Systems: Opportunities to Leapfrog Current Technologies. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1625125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Summary
Objective:
To discuss why clinical information systems are failing.
Method:
Subjectively analyzing the development of clinical IT systems during the last decades.
Results and Conclusions:
The challenge is to anticipate what information clinicians need and then deliver it in a way that is tailored for their unique views. Clinicians need workstations that offer the highest level possible of user-determined flexibility and customization. We envision and outline a so-called point of care work station, automatically scaling to the display, hardware capacity, operating system, applications (local or distributed) the user needs and across diverse health IT systems.
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Wanapaisan P, Laothamteep N, Vejarano F, Chakraborty J, Shintani M, Muangchinda C, Morita T, Suzuki-Minakuchi C, Inoue K, Nojiri H, Pinyakong O. Synergistic degradation of pyrene by five culturable bacteria in a mangrove sediment-derived bacterial consortium. J Hazard Mater 2018; 342:561-570. [PMID: 28886568 DOI: 10.1016/j.jhazmat.2017.08.062] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 08/17/2017] [Accepted: 08/23/2017] [Indexed: 05/22/2023]
Abstract
A pyrene-degrading microbial consortium was obtained after enrichment with mangrove sediment collected from Thailand. Five cultivable bacteria (Mycobacterium spp. PO1 and PO2, Novosphingobium pentaromativorans PY1, Ochrobactrum sp. PW1, and Bacillus sp. FW1) were successfully isolated from the consortium. Draft genomes of them showed that two different morphotypes of Mycobacterium (PO1 and PO2), possessed a complete gene set for pyrene degradation. PY1 contained genes for phthalate assimilation via protocatechuate, a central intermediate, by meta-cleavage pathway, and PW1 possessed genes for protocatechuate degradation via ortho-cleavage pathway. The occurrence of biosurfactant-producing genes in FW1 suggests the involvement in enhancing the pyrene bioavailability. Biotransformation experiments revealed that Mycobacterium completely degraded 100mgL-1 pyrene within six days, whereas no significant degradation was observed with the others. Notably, PY1 and PW1 exhibited higher activity for protocatechuate degradation than the others. The artificially reconstructed consortia containing Mycobacterium with the other three strains (PY1, PW1 and FW1) showed three-fold higher degradation rate for pyrene than the individual Mycobacterium. The enhanced pyrene biodegradation achieved in the consortium was due to the cooperative interaction of bacterial mixture. Our findings showing that synergistic degradation of pyrene in the consortium will facilitate the application of the defined bacterial consortium in bioremediation.
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Affiliation(s)
- Pagakrong Wanapaisan
- Department of Microbiology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Natthariga Laothamteep
- Department of Microbiology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Felipe Vejarano
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Joydeep Chakraborty
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Masaki Shintani
- Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan
| | - Chanokporn Muangchinda
- Department of Microbiology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Tomomi Morita
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; Department of Bioscience and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama, Saitama 337-8570, Japan
| | - Chiho Suzuki-Minakuchi
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kengo Inoue
- Department of Biochemistry and Applied Biosciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki, Miyazaki 889-2192, Japan
| | - Hideaki Nojiri
- Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
| | - Onruthai Pinyakong
- Department of Microbiology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand; Research Program on Remediation Technologies for Petroleum Contamination, Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand; Omics Sciences and Bioinformatics Center, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand.
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Chakraborty J, Suzuki-Minakuchi C, Okada K, Nojiri H. Thermophilic bacteria are potential sources of novel Rieske non-heme iron oxygenases. AMB Express 2017; 7:17. [PMID: 28050858 PMCID: PMC5209329 DOI: 10.1186/s13568-016-0318-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 12/23/2016] [Indexed: 11/10/2022] Open
Abstract
Rieske non-heme iron oxygenases, which have a Rieske-type [2Fe-2S] cluster and a non-heme catalytic iron center, are an important family of oxidoreductases involved mainly in regio- and stereoselective transformation of a wide array of aromatic hydrocarbons. Though present in all domains of life, the most widely studied Rieske non-heme iron oxygenases are found in mesophilic bacteria. The present study explores the potential for isolating novel Rieske non-heme iron oxygenases from thermophilic sources. Browsing the entire bacterial genome database led to the identification of 45 homologs from thermophilic bacteria distributed mainly among Chloroflexi, Deinococcus-Thermus and Firmicutes. Thermostability, measured according to the aliphatic index, showed higher values for certain homologs compared with their mesophilic relatives. Prediction of substrate preferences indicated that a wide array of aromatic hydrocarbons could be transformed by most of the identified oxygenase homologs. Further identification of putative genes encoding components of a functional oxygenase system opens up the possibility of reconstituting functional thermophilic Rieske non-heme iron oxygenase systems with novel properties.
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Sen S, Chakraborty J, Ghosh P, Basu D, Das S. Chickpea WRKY70 Regulates the Expression of a Homeodomain-Leucine Zipper (HD-Zip) I Transcription Factor CaHDZ12, which Confers Abiotic Stress Tolerance in Transgenic Tobacco and Chickpea. Plant Cell Physiol 2017; 58:1934-1952. [PMID: 29016956 DOI: 10.1093/pcp/pcx126] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 08/19/2017] [Indexed: 06/07/2023]
Abstract
Drought and salinity are the two major environmental constraints that severely affect global agricultural productivity. Plant-specific HD-Zip transcription factors are involved in plant growth, development and stress responses. In the present study, we explored the functional characteristics and regulation of a novel HD-Zip (I) gene from chickpea, CaHDZ12, in response to water-deficit and salt-stress conditions. Transgenic tobacco lines over-expressing CaHDZ12 exhibited improved tolerance to osmotic stresses and increased sensitivity to abscisic acid (ABA). Physiological compatibility of transgenic lines was found to be more robust compared to the wild-type plants under drought and salinity stress. Additionally, expression of several stress-responsive genes was significantly induced in CaHDZ12 transgenic plants. On the other hand, silencing of CaHDZ12 in chickpea resulted in increased sensitivity to salt and drought stresses. Analysis of different promoter deletion mutants identified CaWRKY70 transcription factor as a transcriptional regulator of CaHDZ12 expression. In vivo and in vitro interaction studies detected an association between CaWRKY70 and CaHDZ12 promoter during stress responses. Epigenetic modifications underlying histone acetylation at the CaHDZ12 promoter region play a significant role in stress-induced activation of this gene. Collectively, our study describes a crucial and unique mechanistic link between two distinct transcription factors in regulating plant adaptive stress response.
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Affiliation(s)
- Senjuti Sen
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata-700054, West Bengal, India
| | - Joydeep Chakraborty
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata-700054, West Bengal, India
| | - Prithwi Ghosh
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata-700054, West Bengal, India
| | - Debabrata Basu
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata-700054, West Bengal, India
| | - Sampa Das
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata-700054, West Bengal, India
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Riverso M, Perbtani YB, Shuster JJD, Chakraborty J, Brar TS, Agarwal M, Zhang H, Gupte A, Chauhan SS, Forsmark CE, Draganov PV, Yang D. Carbon dioxide insufflation is associated with increased serrated polyp detection rate when compared to room air insufflation during screening colonoscopy. Endosc Int Open 2017; 5:E905-E912. [PMID: 28924598 PMCID: PMC5597937 DOI: 10.1055/s-0043-116382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 06/16/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND STUDY AIMS Sessile serrated adenomas (SSA) and traditional serrated adenomas (TSA) have been increasingly recognized as precursors of colorectal cancer. The aim of this study was to compare the effect of carbon dioxide insufflation (CO 2 I) vs. room air insufflation (AI) on serrated polyp detection rate (SPDR) and to identify factors associated with SPDR. PATIENTS AND METHODS Single-center retrospective cohort study of 2083 screening colonoscopies performed with AI (November 2011 through January 2013) or CO 2 I (February 2013 to June 2015). Data on demographics, procedure characteristics and histology results were obtained from a prospectively maintained endoscopy database and chart review. SPDR was defined as proportion of colonoscopies in which ≥ 1 SSA, TSA or hyperplastic polyp (HP) ≥ 10 mm in the right colon was detected. Multi-variate analysis (MVA) was performed to identify predictors of SPDR. RESULTS A total of 131 histologically confirmed serrated polyps (129 SSA, 2 TSA and 0 HP ≥ 10 mm) were detected. SPDR was higher with CO 2 I vs. AI (4.8 % vs. 1.4 %; P < 0.0001). On MVA, CO 2 I was associated with higher SPDR when compared to AI (OR: 9.52; 95 % CI: 3.05 - 30.3). Both higher body mass index (OR 1.05; 95 % CI:1.02 - 1.09) and longer colonoscope withdrawal time (OR 1.11; 95 % CI: 1.07 - 1.16) were also associated with higher SPDR. CONCLUSION CO 2 I is associated with higher SPDR when compared to AI during screening colonoscopy. While the mechanism remains unknown, we speculate that the favorable gas characteristics of CO 2 compared to room air results in improved polyp detection by optimizing bowel insufflation. These findings suggest an additional reason to prefer the use of CO 2 I over AI during colonoscopy.
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Affiliation(s)
- Michael Riverso
- Division of Gastroenterology, University of Florida, Gainesville, Florida, United States
| | - Yaseen B. Perbtani
- Division of Gastroenterology, University of Florida, Gainesville, Florida, United States
| | - Jonathan J. D. Shuster
- Department of Health Outcomes and Policy, University of Florida, Gainesville, Florida, United States
| | - Joydeep Chakraborty
- Department of Medicine, University of Florida, Gainesville, Florida, United States
| | - Tony S. Brar
- Department of Medicine, University of Florida, Gainesville, Florida, United States
| | - Mitali Agarwal
- Department of Medicine, University of Florida, Gainesville, Florida, United States
| | - Han Zhang
- Department of Medicine, University of Florida, Gainesville, Florida, United States
| | - Anand Gupte
- Division of Gastroenterology, University of Florida, Gainesville, Florida, United States
| | - Shailendra S. Chauhan
- Division of Gastroenterology, University of Florida, Gainesville, Florida, United States
| | | | - Peter V. Draganov
- Division of Gastroenterology, University of Florida, Gainesville, Florida, United States
| | - Dennis Yang
- Division of Gastroenterology, University of Florida, Gainesville, Florida, United States,Corresponding author Dennis Yang, MD Division of GastroenterologyUniversity of Florida1329 SW 16th Street, Suite 5251Gainesville, FL 32608+1-352-627-9002
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Yang D, Perbtani YB, An Q, Agarwal M, Riverso M, Chakraborty J, Brar TS, Westerveld D, Zhang H, Chauhan SS, Forsmark CE, Draganov PV. Survey study on the practice patterns in the endoscopic management of malignant distal biliary obstruction. Endosc Int Open 2017; 5:E754-E762. [PMID: 28791325 PMCID: PMC5546911 DOI: 10.1055/s-0043-111592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 03/23/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND STUDY AIM Endoscopic biliary drainage for malignant distal biliary obstruction (MDBO) is a common practice. Controversy persists with regard to its role in resectable MDBO, the optimal technical method and type of stent. The aim of this study was to evaluate practice patterns in the treatment of MDBO among endoscopists with varying levels of experience and practice backgrounds. METHODS Electronic survey distributed to members of the American Society for Gastrointestinal Endoscopy (ASGE). The main outcome measures included practice setting (academic vs. community), volume of endoscopic retrograde cholangiopancreatographies (ERCPs), reasons for endoscopic drainage in MDBO, and technical approach. RESULTS A total of 335 subjects (54 % community-based endoscopists) completed the survey. Most academic physicians (69 %) reported performing ≥ 150 ERCPs annually compared to 18.8 % of community physicians ( P < 0.001). In aggregate, 13.1 % of respondents performed ERCP in resectable MDBO because of surgeon preference or as the standard of care at their institution. The use of metal vs. plastic stents in MDBO varied based on practice setting. Routine sphincterotomy for MDBO was more common among community (78 %) vs academic endoscopists (61.1 %) ( P < 0.001). Over half (58 %) of the subjects avoided covering the cystic duct take-off during stenting MDBO if there was a gallbladder in situ. CONCLUSION There is significant variability in practice patterns for the treatment of MDBO. In spite of the recent ASGE guideline recommendations, some patients with resectable MDBO still undergo preoperative ERCP. Current clinical practices are not clearly supported by available data and underscore the need to increase adherence to gastrointestinal societal recommendations and an evidence-based approach to standardized patient care.
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Affiliation(s)
- Dennis Yang
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA,Corresponding author Dennis Yang, MD Division of GastroenterologyUniversity of Florida1329 SW 16th StreetSuite 5251GainesvilleFL 32608USA+1-352-627-9002
| | - Yaseen B. Perbtani
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | - Qi An
- Department of Health Outcomes and Policy, University of Florida, Gainesville, FL, USA
| | - Mitali Agarwal
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Michael Riverso
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
| | | | - Tony S. Brar
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | | | - Han Zhang
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | | | | | - Peter V. Draganov
- Division of Gastroenterology and Hepatology, University of Florida, Gainesville, FL, USA
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Perbtani YB, Riverso M, Shuster JJ, Chakraborty J, Brar TS, Agarwal M, Zhang H, Gupte A, Chauhan SS, Forsmark CE, Draganov PV, Yang D. Does carbon dioxide insufflation impact adenoma detection rate? A single-center retrospective analysis. Endosc Int Open 2016; 4:E1275-E1279. [PMID: 27995188 PMCID: PMC5161121 DOI: 10.1055/s-0042-118177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 09/12/2016] [Indexed: 12/21/2022] Open
Abstract
Background and study aims: Carbon dioxide (CO2) has been associated with reduced post-procedural pain and improved patient satisfaction when compared to air insufflation (AI). The effect of CO2 insufflation (CO2I) on the adenoma detection rate (ADR) remains unclear. The aims of this study are to compare ADR in patients undergoing screening colonoscopy with AI vs. CO2I and identify predictors of ADR. Patients and methods: Single-center retrospective cohort study of 2,107 patients undergoing screening colonoscopy at the University of Florida Hospital between November 2011 and June 2015. Patient demographics, procedural parameters, and histology results were retrospectively obtained from a prospectively maintained colonoscopy database. Univariate and multivariate analysis were performed to identify predictors of ADR. Results: A total of 2107 colonoscopies (644 with AI and 1463 with CO2I) were analyzed. Overall ADR was 27.8 %. There was no significant difference in ADR between AI (27.6 %) vs. CO2I (27.8 %) (P = 0.93). Method of insufflation (AI vs. CO2I) was not significantly associated with ADR (OR 0.9; 95 % CI:0.7 - 1.2). Older age (OR: 1.02; 95 % CI: 1.001 - 1.03 per year increase), male gender (OR 1.48; 95 % CI: 1.17 - 1.87), and longer scope withdraw time (OR 1.13; 95 % CI: 1.1 - 1.16 per minute) were associated with a higher ADR. Fellow involvement was negatively associated with ADR (OR 0.60; 95 % CI: 0.47 - 0.77). Conclusion: ADR was similar between patients who underwent screening colonoscopy with AI vs. CO2I. While CO2I has been associated with improved patient comfort and post-procedural recovery time, there is no definitive evidence to suggest that this method of luminal distention enhances ADR.
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Affiliation(s)
- Yaseen B. Perbtani
- Department of Medicine, University of
Florida, Gainesville, Florida, United States
| | - Michael Riverso
- Department of Medicine, University of
Florida, Gainesville, Florida, United States
| | - Jonathan J. Shuster
- Department of Health Outcomes and Policy
University of Florida, Gainesville, Florida, United States
| | - Joydeep Chakraborty
- Department of Medicine, University of
Florida, Gainesville, Florida, United States
| | - Tony S. Brar
- Department of Medicine, University of
Florida, Gainesville, Florida, United States
| | - Mitali Agarwal
- Department of Medicine, University of
Florida, Gainesville, Florida, United States
| | - Han Zhang
- Department of Medicine, University of
Florida, Gainesville, Florida, United States
| | - Anand Gupte
- Division of Gastroenterology, University of
Florida, Gainesville, Florida, United States
| | - Shailendra S. Chauhan
- Division of Gastroenterology, University of
Florida, Gainesville, Florida, United States
| | | | - Peter V. Draganov
- Division of Gastroenterology, University of
Florida, Gainesville, Florida, United States
| | - Dennis Yang
- Division of Gastroenterology, University of
Florida, Gainesville, Florida, United States,Corresponding author Dennis Yang,
MD Division of Gastroenterology, University of
Florida1329 SW 16th Street, Suite
5251Gainesville, FL 32608United
States+1-352-273-9474+1-352-627-9002
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Abstract
This paper reports an atypical hysteria epidemic in a tribal village of the State of Tripura, India. Twelve persons, eight female and four male, were affected in a chain reaction within a span of ten days. The cardinal feature was an episodic trance state of 5 to 15 minutes duration with restlessness, attempts at self-injury, running away, inappropriate behaviour, inability to identify family members, refusal of food and intermittent mimicking of animal sounds. The illness was self-limiting and showed an individual course of one to three days duration. Sociocultural aspects of the epidemic are discussed.
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Affiliation(s)
- J. English
- Department of Biochemistry, University of Surrey, Guildford, U.K
| | - J. Chakraborty
- Department of Biochemistry, University of Surrey, Guildford, U.K
| | - V. Marks
- Department of Biochemistry, University of Surrey, Guildford, U.K
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Ghosh P, Sen S, Chakraborty J, Das S. Monitoring the efficacy of mutated Allium sativum leaf lectin in transgenic rice against Rhizoctonia solani. BMC Biotechnol 2016; 16:24. [PMID: 26932667 PMCID: PMC4774011 DOI: 10.1186/s12896-016-0246-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 02/09/2016] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Rice sheath blight, caused by Rhizoctonia solani is one of the most devastating diseases of rice. It is associated with significant reduction in rice productivity worldwide. A mutant variant of mannose binding Allium sativum leaf agglutinin (mASAL) was previously reported to exhibit strong antifungal activity against R. solani. In this study, the mASAL gene has been evaluated for its in planta antifungal activity in rice plants. RESULTS mASAL was cloned into pCAMBIA1301 binary vector under the control of CaMV35S promoter. It was expressed in an elite indica rice cv. IR64 by employing Agrobacterium tumefaciens-mediated transformation. Molecular analyses of transgenic plants confirmed the presence and stable integration of mASAL gene. Immunohistofluorescence analysis of various tissue sections of plant parts clearly indicated the constitutive expression of mASAL. The segregation pattern of mASAL transgene was observed in T1 progenies in a 3:1 Mendelian ratio. The expression of mASAL was confirmed in T0 and T1 plants through western blot analysis followed by ELISA. In planta bioassay of transgenic lines against R. solani exhibited an average of 55 % reduction in sheath blight percentage disease index (PDI). CONCLUSIONS The present study opens up the possibility of engineering rice plants with the antifungal gene mASAL, conferring resistance to sheath blight.
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Affiliation(s)
- Prithwi Ghosh
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India.
| | - Senjuti Sen
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India.
| | - Joydeep Chakraborty
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India.
| | - Sampa Das
- Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, CIT Scheme, VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India.
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Abstract
Growth of large nanosheets from small nanosheets by oriented attachment.
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Affiliation(s)
- A. H. Shaik
- Department of Chemical Engineering
- Indian Institute of Technology Kharagpur
- India
| | - J. Chakraborty
- Department of Chemical Engineering
- Indian Institute of Technology Kharagpur
- India
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Chakraborty J, Rajamma U, Jana N, Mohanakumar K. Quercetin improves the activity of the ubiquitin-proteasomal system in 150Q mutated huntingtin-expressing cells but exerts detrimental effects on neuronal survivability. J Neurosci Res 2015; 93:1581-91. [DOI: 10.1002/jnr.23618] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Revised: 06/02/2015] [Accepted: 06/19/2015] [Indexed: 12/20/2022]
Affiliation(s)
- J. Chakraborty
- Division of Cell Biology and Physiology; Laboratory of Clinical and Experimental Neuroscience, CSIR-Indian Institute of Chemical Biology; Kolkata India
| | - U. Rajamma
- Manovikas Biomedical Research and Diagnostic Centre; Kolkata India
| | - N. Jana
- National Brain Research Centre; Gurgaon Haryana India
| | - K.P. Mohanakumar
- Division of Cell Biology and Physiology; Laboratory of Clinical and Experimental Neuroscience, CSIR-Indian Institute of Chemical Biology; Kolkata India
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Tripathy D, Chakraborty J, Mohanakumar KP. Antagonistic pleiotropic effects of nitric oxide in the pathophysiology of Parkinson's disease. Free Radic Res 2015; 49:1129-39. [DOI: 10.3109/10715762.2015.1045505] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Mallick D, Saha M, Chakrabarti S, Chakraborty J. Leiomyoma of broad ligament mimicking ovarian malignancy- report of a unique case. Kathmandu Univ Med J (KUMJ) 2015; 12:219-21. [PMID: 25855117 DOI: 10.3126/kumj.v12i3.13723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tumors of the broad ligament are uncommon. Leiomyoma, which is the commonest female genital neoplasm, is also the most common solid tumor of the broad ligament. Leiomyomas affect 30% of all women of reproductive age but the incidence of broad-ligament leiomyoma is <1%. These benign tumors are usually asymptomatic. A case is being described where a 52 year old presented with gradual abdominal swelling which was clinically and radiologically diagnosed as ovarian malignancy. On abdominal and bimanual palpation a soft cystic mass was noted in the right pelvic region. CA 125 was mildly raised. CEA, CA 19.9 levels were within normal limit. The radiological diagnosis was ovarian cyst with possibility of malignant changes. Staging laparotomy and histopathological examination of the resected specimen revealed a right sided broad ligament leiomyoma with cystic changes. The degenerative changes in the leiomyoma lead to the clinical and radiological diagnostic confusion. Thus, though uncommon, broad ligament leiomyoma should be considered during evaluation of adnexal masses for optimal patient management. The above description of leiomyoma in the broad ligament is a highly unique case and thus deserves appropriate attention.
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Affiliation(s)
- D Mallick
- Department of Pathology, ESI PGIMSR & ESIC Medical College, Joka, West Bengal, India
| | - M Saha
- Department of Pathology, ESI PGIMSR & ESIC Medical College, Joka, West Bengal, India
| | | | - J Chakraborty
- Department of Pathology, ESI PGIMSR & ESIC Medical College, Joka, West Bengal, India
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Shaik AH, Chakraborty J. Synthesis of monodisperse copper nanoparticles using a modified digestive ripening technique and formation of superlattices. RSC Adv 2015. [DOI: 10.1039/c5ra16508c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of very uniform copper nanoparticles and subsequent superlattice formation.
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Affiliation(s)
- A. H. Shaik
- Department of Chemical Engineering
- Indian Institute of Technology Kharagpur
- India
| | - J. Chakraborty
- Department of Chemical Engineering
- Indian Institute of Technology Kharagpur
- India
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Chakraborty J, Pandey M, Navneet A, Appukuttan T, Varghese M, Sreetama S, Rajamma U, Mohanakumar K. Profilin-2 increased expression and its altered interaction with β-actin in the striatum of 3-nitropropionic acid-induced Huntington’s disease in rats. Neuroscience 2014; 281:216-28. [DOI: 10.1016/j.neuroscience.2014.09.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 09/14/2014] [Accepted: 09/15/2014] [Indexed: 12/27/2022]
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Chakraborty J, Chakrabarti S, Das S. Characterization and antimicrobial properties of lipopeptide biosurfactants produced by Bacillus subtilis SJ301 and Bacillus vallismortis JB201. APPL BIOCHEM MICRO+ 2014. [DOI: 10.1134/s0003683814060039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chakraborty J, Jana T, Saha S, Dutta TK. Ring-Hydroxylating Oxygenase database: a database of bacterial aromatic ring-hydroxylating oxygenases in the management of bioremediation and biocatalysis of aromatic compounds. Environ Microbiol Rep 2014; 6:519-523. [PMID: 25646545 DOI: 10.1111/1758-2229.12182] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Bacterial Rieske-type aromatic ring-hydroxylating oxygenases (RHOs) constitute a large family of enzymes, primarily involved in bioremediation of diverse aromatic compounds in the environment. In the present study, we have designed a manually curated database, Ring-Hydroxylating Oxygenase database (RHObase), which provides comprehensive information on all biochemically characterized bacterial RHOs. It consists of ∼ 1000 entries including 196 oxygenase α-subunits, 153 oxygenase β-subunits, 92 ferredoxins and 110 reductases, distributed among 131 different bacterial strains implementing a total of 318 oxygenation reactions. For each protein, users can get detailed information about its structure and conserved domain(s) with motif signature. RHObase allows users to search a query, based on organism, oxygenase, substrate, or protein structure. In addition, this resource provides analysis tools to perform blast search against RHObase for prediction of putative substrate(s) for the query oxygenase and its phylogenetic affiliation. Furthermore, there is an integrated cheminformatics tool to search for structurally similar compound(s) in the database vis-a-vis RHO(s) capable of transforming those compound(s). Resources in the RHObase and multiple search/display options therein are intended to provide oxygenase-related requisite information to researchers, especially working in the field of environmental microbiology and biocatalysis to attain difficult chemistry of biotechnological importance.
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