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Roy AS, Banerjee K, Roy P, Shil R, Ravishankar R, Datta R, Sen A, Manna S, Ghosh TK, Mukherjee G, Rana TK, Kundu S, Nayak SS, Pandey R, Paul D, Atreya K, Basu S, Mukhopadhyay S, Pandit D, Kulkarni MS, Bhattacharya C. Measurement of energy and directional distribution of neutron ambient dose equivalent for the 7Li(p,n) 7Be reaction. Appl Radiat Isot 2024; 204:111140. [PMID: 38070360 DOI: 10.1016/j.apradiso.2023.111140] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 11/13/2023] [Accepted: 12/02/2023] [Indexed: 12/31/2023]
Abstract
Double differential neutron fluence distributions were measured in the 7Li(p,n)7Be reaction for proton beam energies 7, 9 and 12 MeV. Seven liquid scintillator based detectors were employed to measure neutron fluence distributions using the Time of Flight technique. Neutron ambient dose equivalents were determined from the measured fluence distribution using ICRP (International Commission on Radiological Protection) recommended fluence to dose equivalent conversion coefficients. Neutron dose equivalents were also measured using a conventional BF3 detector based REM counter. Ambient dose equivalent measured by the REM counter is found to be in agreement with that determined from the neutron fluence spectra within their uncertainties. Angular distributions of the ambient dose equivalents were also determined from the measured fluence distributions at different angles.
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Affiliation(s)
- A S Roy
- Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - K Banerjee
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India.
| | - Pratap Roy
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - R Shil
- Visva Bharati University, Santiniketan, Bolpur, West Bengal 731235, India
| | - R Ravishankar
- Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - R Datta
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; RP&AD, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - A Sen
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - S Manna
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - T K Ghosh
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - G Mukherjee
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - T K Rana
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - S Kundu
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - S S Nayak
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - R Pandey
- Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - D Paul
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - K Atreya
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - S Basu
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - S Mukhopadhyay
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - Deepak Pandit
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
| | - M S Kulkarni
- Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - C Bhattacharya
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India; Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064, India
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Mukherjee G, Velmurugan G, Kerscher M, Kumar Satpathy J, Sastri CV, Comba P. Mechanistic Insights into Amphoteric Reactivity of an Iron-Bispidine Complex. Chemistry 2024; 30:e202303127. [PMID: 37942658 DOI: 10.1002/chem.202303127] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/10/2023]
Abstract
The reactivity of FeIII -alkylperoxido complexes has remained a riddle to inorganic chemists owing to their thermal instability and impotency towards organic substrates. These iron-oxygen adducts have been known as sluggish oxidants towards oxidative electrophilic and nucleophilic reactions. Herein, we report the synthesis and spectroscopic characterization of a relatively stable mononuclear high-spin FeIII -alkylperoxido complex supported by an engineered bispidine framework. Against the notion, this FeIII -alkylperoxido complex serves as a rare example of versatile reactivity in both electrophilic and nucleophilic reactions. Detailed mechanistic studies and computational calculations reveal a novel reaction mechanism, where a putative superoxido intermediate orchestrates the amphoteric property of the oxidant. The design of the backbone is pivotal to convey stability and reactivity to alkylperoxido and superoxido intermediates. Contrary to the well-known O-O bond cleavage that generates an FeIV -oxido species, the FeIII -alkylperoxido complex reported here undergoes O-C bond scission to generate a superoxido moiety that is responsible for the amphiphilic reactivity.
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Affiliation(s)
- Gourab Mukherjee
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad, 500007, India
| | - Gunasekaran Velmurugan
- Anorganisch-Chemisches Institut and, Interdisciplinary Center for Scientific Computing (IWR), Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany)
| | - Marion Kerscher
- Anorganisch-Chemisches Institut and, Interdisciplinary Center for Scientific Computing (IWR), Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany)
| | - Jagnyesh Kumar Satpathy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Chivukula V Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Peter Comba
- Anorganisch-Chemisches Institut and, Interdisciplinary Center for Scientific Computing (IWR), Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany)
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Mukhopadhyay S, Kar W, Mukherjee G. Estimating promotion effects in email marketing using a large-scale cross-classified Bayesian joint model for nested imbalanced data. Ann Appl Stat 2023. [DOI: 10.1214/22-aoas1638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | | | - Gourab Mukherjee
- Department of Data Sciences and Operations, University of Southern California
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Mukherjee G, Biswas S, Haldar B, Dutta T. Correlation of fine needle aspiration cytology and cell block study of category III, IV, and V (TBSRTC-2017) thyroid lesions with special reference to cytokeratin-19 immunohistochemical staining. INDIAN J PATHOL MICR 2022; 65:637-641. [PMID: 35900492 DOI: 10.4103/ijpm.ijpm_1037_21] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023] Open
Abstract
CONTEXT Ascertaining the role of cytokeratin-19 (CK19) and its staining pattern helps to differentiate papillary carcinoma from other thyroid lesions. AIMS To correlate fine needle aspiration cytology (FNAC) and cell block study of equivocal cases (Category III, IV, and V) with the role of CK19 staining in it. SETTINGS AND DESIGN A hospital-based cross-sectional observational study was designed and conducted at North Bengal Medical College and Hospital, Shusrutnagar, Darjeeling. METHODS AND MATERIAL The FNAC performed and reported as per TBSRTC-2017.50 cases of Category III, IV, and V was selected for cell block study and CK19 staining followed by immunohistochemical scoring. RESULTS Out of 50 cases, 17 were follicular neoplasm, 21 papillary carcinoma, 6 lymphocytic thyroiditis, 1 Hürthle cell adenoma, 1 medullary carcinoma, 1 lymphoma, and 3 undifferentiated carcinomas. Among cases of papillary carcinoma, 10 showed 4+ positivity, 9 showed 3+ positivity, 2 showed focal 1+ and 2+ positivity. In the case of follicular neoplasm, 1 showed 3+ positivity, 3 cases had 1+ 2+ positivity, and 13 cases revealed negative staining. CONCLUSION Role of CK19 in distinguishing papillary carcinoma of thyroid from other lesions in cytologically diagnosed Category III, IV, and V (TBSRTC-2017) cases can be demonstrated.
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Affiliation(s)
- Gourab Mukherjee
- Department of Pathology, North Bengal Medical College and Hospital, Darjeeling, West Bengal, India
| | - Sumana Biswas
- Department of Pathology, North Bengal Medical College and Hospital, Darjeeling, West Bengal, India
| | - Biswajit Haldar
- Department of Pathology, North Bengal Medical College and Hospital, Darjeeling, West Bengal, India
| | - Tanmoy Dutta
- Department of Pathology, North Bengal Medical College and Hospital, Darjeeling, West Bengal, India
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Bagha UK, Satpathy JK, Mukherjee G, Barman P, Kumar D, de Visser SP, Sastri CV. Oxidative dehalogenation of halophenols by high-valent nonheme iron(IV)-oxo intermediates. Faraday Discuss 2022; 234:58-69. [PMID: 35170590 DOI: 10.1039/d1fd00064k] [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: 11/21/2022]
Abstract
Mononuclear high-valent iron(IV)-oxo intermediates are excellent oxidants towards oxygenation reactions by heme and nonheme metalloenzymes and their model systems. One of the most important functions of these intermediates in nature is to detoxify various environmental pollutants. Organic substrates, such as halogenated phenols, are known to be water pollutants which can be degraded to their less hazardous forms through an oxidation reaction by iron(IV)-oxo complexes. Metalloproteins in nature utilize various types of second-coordination sphere interactions to anchor the substrate in the vicinity of the active site. This concept of substrate-binding is well-known for natural enzymes, but is elusive for the relevant biomimetic model systems. Herein, we report the oxidative reactivity patterns of an iron(IV)-oxo intermediate, [FeIV(O)(2PyN2Q)]2+, (2PyN2Q = 1,1-di(pyridin-2yl)-N,N-bis(quinolin-2-ylmethyl)methanamine) with a series of mono-, di- and tri-halophenols. A detailed experimental study shows that the dehalogenation reactions of the halophenols by such iron(IV)-oxo intermediates proceed via an initial hydrogen atom abstraction from the phenolic O-H group. Furthermore, based on the size and nucleophilicity of the halophenol, an intermediate substrate-bound species forms that is a phenolate adduct to the ferric species, which thereafter leads to the formation of the corresponding products.
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Affiliation(s)
- Umesh Kumar Bagha
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India.
| | | | - Gourab Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India. .,Department of Chemical Science, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai, 400005, India
| | - Prasenjit Barman
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India. .,Department of Chemistry, Kaliyaganj College, West Bengal, 733129, India
| | - Devesh Kumar
- Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India.
| | - Sam P de Visser
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India. .,The Manchester Institute of Biotechnology, Department of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Chivukula V Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India.
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Mukherjee G, Johnstone IM. On minimax optimality of sparse Bayes predictive density estimates. Ann Stat 2022. [DOI: 10.1214/21-aos2086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Gourab Mukherjee
- Department of Data Sciences and Operations, University of Southern California
| | - Iain M. Johnstone
- Departments of Statistics and of Biomedical Data Science, Stanford University
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de Visser SP, Mukherjee G, Ali HS, Sastri CV. Local Charge Distributions, Electric Dipole Moments, and Local Electric Fields Influence Reactivity Patterns and Guide Regioselectivities in α-Ketoglutarate-Dependent Non-heme Iron Dioxygenases. Acc Chem Res 2022; 55:65-74. [PMID: 34915695 DOI: 10.1021/acs.accounts.1c00538] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Non-heme iron dioxygenases catalyze vital processes for human health related to the biosynthesis of essential products and the biodegradation of toxic metabolites. Often the natural product biosyntheses by these non-heme iron dioxygenases is highly regio- and chemoselective, which are commonly assigned to tight substrate-binding and positioning. However, recent high-level computational modeling has shown that substrate-binding and positioning is only part of the story and long-range electrostatic interactions can play a major additional role.In this Account, we review and summarize computational viewpoints on the high regio- and chemoselectivity of α-ketoglutarate-dependent non-heme iron dioxygenases and how external perturbations affect the catalysis. In particular, studies from our groups have shown that often a regioselectivity in enzymes can be accomplished by stabilization of the rate-determining transition state for the reaction through external charges, electric dipole moments, or local electric field effects. Furthermore, bond dissociation energies in molecules are shown to be influenced by an electric field effect, and through targeting a specific bond in an electric field, this can lead to an unusually specific reaction. For instance, in the carbon-induced starvation protein, we studied two substrate-bound conformations and showed that regardless of what C-H bond of the substrate is closest to the iron(IV)-oxo oxidant, the lowest hydrogen atom abstraction barrier is always for the pro-S C2-H abstraction due to an induced dipole moment of the protein that weakens this bond. In another example of the hygromycin biosynthesis enzyme, an oxidative ring-closure reaction in the substrate forms an ortho-δ-ester ring. Calculations on this enzyme show that the selectivity is guided by a protonated lysine residue in the active site that, through its positive charge, triggers a low energy hydrogen atom abstraction barrier. A final set of examples in this Account discuss the viomycin biosynthesis enzyme and the 2-(trimethylammonio)ethylphosphonate dioxygenase (TmpA) enzyme. Both of these enzymes are shown to possess a significant local dipole moment and local electric field effect due to charged residues surrounding the substrate and oxidant binding pockets. The protein dipole moment and local electric field strength changes the C-H bond strengths of the substrate as compared to the gas-phase triggers the regioselectivity of substrate activation. In particular, we show that in the gas phase and in a protein environment C-H bond strengths are different due to local electric dipole moments and electric field strengths. These examples show that enzymes have an intricately designed structure that enables a chemical reaction under ambient conditions through the positioning of positively and negatively charged residues that influence and enhance reaction mechanisms. These computational insights create huge possibilities in bioengineering to apply local electric field and dipole moments in proteins to achieve an unusual selectivity and specificity and trigger a fit-for-purpose biocatalyst for unique biotransformations.
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Affiliation(s)
- Sam P. de Visser
- Manchester Institute of Biotechnology and Department of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039 Assam, India
| | - Gourab Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039 Assam, India
| | - Hafiz Saqib Ali
- Manchester Institute of Biotechnology and Department of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Chivukula V. Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039 Assam, India
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Mukherjee G, Satpathy JK, Bagha UK, Mubarak MQE, Sastri CV, de Visser SP. Inspiration from Nature: Influence of Engineered Ligand Scaffolds and Auxiliary Factors on the Reactivity of Biomimetic Oxidants. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01993] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Gourab Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India
| | - Jagnyesh K. Satpathy
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India
| | - Umesh K. Bagha
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India
| | - M. Qadri E. Mubarak
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
- Fakulti Sains dan Teknologi, Universiti Sains Islam Malaysia, Bandar Baru Nilai, 71800 Nilai, Negeri Sembilan Malaysia
| | - Chivukula V. Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India
| | - Sam P. de Visser
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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Bagha UK, Satpathy JK, Mukherjee G, Sastri CV, de Visser SP. A comprehensive insight into aldehyde deformylation: mechanistic implications from biology and chemistry. Org Biomol Chem 2021; 19:1879-1899. [PMID: 33406196 DOI: 10.1039/d0ob02204g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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]
Abstract
Aldehyde deformylation is an important reaction in biology, organic chemistry and inorganic chemistry and the process has been widely applied and utilized. For instance, in biology, the aldehyde deformylation reaction has wide differences in biological function, whereby cyanobacteria convert aldehydes into alkanes or alkenes, which are used as natural products for, e.g., defense mechanisms. By contrast, the cytochromes P450 catalyse the biosynthesis of hormones, such as estrogen, through an aldehyde deformylation reaction step. In organic chemistry, the aldehyde deformylation reaction is a common process for replacing functional groups on a molecule, and as such, many different synthetic methods and procedures have been reported that involve an aldehyde deformylation step. In bioinorganic chemistry, a variety of metal(iii)-peroxo complexes have been synthesized as biomimetic models and shown to react efficiently with aldehydes through deformylation reactions. This review paper provides an overview of the various aldehyde deformylation reactions in organic chemistry, biology and biomimetic model systems, and shows a broad range of different chemical reaction mechanisms for this process. Although a nucleophilic attack at the carbonyl centre is the consensus reaction mechanism, several examples of an alternative electrophilic reaction mechanism starting with hydrogen atom abstraction have been reported as well. There is still much to learn and to discover on aldehyde deformylation reactions, as deciphered in this review paper.
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Affiliation(s)
- Umesh Kumar Bagha
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | | | - Gourab Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | - Chivukula V Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | - Sam P de Visser
- Manchester Institute of Biotechnology and the Department of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK.
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Banerjee T, Bhattacharya BB, Mukherjee G. A nearest-neighbor based nonparametric test for viral remodeling in heterogeneous single-cell proteomic data. Ann Appl Stat 2020. [DOI: 10.1214/20-aoas1362] [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: 11/19/2022]
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Nandi S, Mukherjee G, Chen QB, Frauendorf S, Banik R, Bhattacharya S, Dar S, Bhattacharyya S, Bhattacharya C, Chatterjee S, Das S, Samanta S, Raut R, Ghugre SS, Rajbanshi S, Ali S, Pai H, Asgar MA, Das Gupta S, Chowdhury P, Goswami A. First Observation of Multiple Transverse Wobbling Bands of Different Kinds in ^{183}Au. Phys Rev Lett 2020; 125:132501. [PMID: 33034500 DOI: 10.1103/physrevlett.125.132501] [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] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/17/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
We report the first observation of two wobbling bands in ^{183}Au, both of which were interpreted as the transverse wobbling (TW) band but with different behavior of their wobbling energies as a function of spin. It increases (decreases) with spin for the positive (negative) parity configuration. The crucial evidence for the wobbling nature of the bands, dominance of the E2 component in the ΔI=1 transitions between the partner bands, is provided by the simultaneous measurements of directional correlation from the oriented states ratio and the linear polarization of the γ rays. Particle rotor model calculations with triaxial deformation reproduce the experimental data well. A value of spin, I_{m}, has been determined for the observed TW bands below which the wobbling energy increases and above which it decreases with spin. The nucleus ^{183}Au is, so far, the only nucleus in which both the increasing and the decreasing parts are observed and thus gives the experimental evidence of the complete transverse wobbling phenomenon.
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Affiliation(s)
- S Nandi
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - G Mukherjee
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Q B Chen
- Physik-Department, Technische Universität München, D-85747 Garching, Germany
| | - S Frauendorf
- Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - R Banik
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Soumik Bhattacharya
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Shabir Dar
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - S Bhattacharyya
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - C Bhattacharya
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - S Chatterjee
- UGC-DAE CSR, Kolkata Centre, Kolkata 700098, India
| | - S Das
- UGC-DAE CSR, Kolkata Centre, Kolkata 700098, India
| | - S Samanta
- UGC-DAE CSR, Kolkata Centre, Kolkata 700098, India
| | - R Raut
- UGC-DAE CSR, Kolkata Centre, Kolkata 700098, India
| | - S S Ghugre
- UGC-DAE CSR, Kolkata Centre, Kolkata 700098, India
| | - S Rajbanshi
- Department of Physics, Presidency University, Kolkata 700043, India
| | - Sajad Ali
- Government General Degree College at Pedong, Kalimpong 734311, India
| | - H Pai
- Saha Institute of Nuclear Physics, Kolkata 700064, India
| | - Md A Asgar
- Department of Physics, Prabhat Kumar College, Contai 721404, India
| | - S Das Gupta
- Victoria Institution (College), Kolkata 700009, India
| | - P Chowdhury
- University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA
| | - A Goswami
- Saha Institute of Nuclear Physics, Kolkata 700064, India
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Mukherjee G, Mukherjee K, Das R, Mandal RS, Roy I, Mukhopadhyay B, Sil AK. Allyl piperidine-1-carbodiothioate and benzyl 1H-imidazole 1 carbodithioate: two potential agents to combat against mycobacteria. J Appl Microbiol 2020; 130:786-796. [PMID: 32615006 DOI: 10.1111/jam.14762] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 04/23/2020] [Accepted: 06/24/2020] [Indexed: 11/27/2022]
Abstract
AIMS The emergence of multidrug resistant strains of Mycobacterium tuberculosis has made tuberculosis more difficult to manage clinically. With the aim of obtaining new and effective anti-mycobacterial agent(s), this study investigated the anti-mycobacterial activity of several imidazole and piperidine derivatives. METHODS AND RESULTS Towards obtaining new anti-mycobacterial agents, Mycobacterium smegmatis cells were treated with different compounds for their growth inhibitory activity. Among these, benzyl 1H-imidazole-1-carbodithioate and allyl piperidine-1-carbodiothioate exhibited better inhibition than the others. Thereafter, anti-biofilm property of these two was examined by treating M. smegmatis with these agents before and after the formation of biofilm. The result showed that both the compounds at their sublethal dose inhibited the formation of biofilm as well as dispersed preformed biofilm. Consistently, they augmented the activity of isoniazid or rifampicin against biofilm-encapsulated cells. MTT assay was performed to examine the toxic effects of this combinatorial therapy on different cell lines. Results exhibited a low cytotoxicity for this combinatorial treatment. The activity of these two was also verified against dormant mycobacterial cells and was found to be effective. CONCLUSION The present study identified two compounds that exhibited anti-mycobacterial activities against both planktonic and dormant cells. These two also exhibited anti-biofilm activity at their sublethal dose and augmented the activity of isoniazid and rifampicin against biofilm encapsulated cells. SIGNIFICANCE AND IMPACT OF THE STUDY The current study provides two new agents that have the potential to be used in anti-mycobacterial therapy and may help in public health management.
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Affiliation(s)
- G Mukherjee
- Department of Microbiology, University of Calcutta, Kolkata, West Bengal, India
| | - K Mukherjee
- Department of Microbiology, University of Calcutta, Kolkata, West Bengal, India
| | - R Das
- Department of Chemical Science, Indian Institute of Science Education and Research Kolkata, Kolkata, West Bengal, India
| | - R S Mandal
- National Institute of Cholera and Enteric Diseases, Biomedical Informatics Centre, Kolkata, West Bengal, India
| | - I Roy
- Clinical Microbiology, Calcutta Medical Research Institute, Kolkata, West Bengal, India
| | - B Mukhopadhyay
- Department of Chemical Science, Indian Institute of Science Education and Research Kolkata, Kolkata, West Bengal, India
| | - A K Sil
- Department of Microbiology, University of Calcutta, Kolkata, West Bengal, India
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14
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Affiliation(s)
- Gourab Mukherjee
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati, Assam 781039 India
| | - Chivukula V. Sastri
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati, Assam 781039 India
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15
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Sen N, Mukherjee G, Arvin AM. The Use of Single Cell Mass Cytometry to Define the Molecular Mechanisms of Varicella-Zoster Virus Lymphotropism. Front Microbiol 2020; 11:1224. [PMID: 32676054 PMCID: PMC7333520 DOI: 10.3389/fmicb.2020.01224] [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: 11/27/2019] [Accepted: 05/14/2020] [Indexed: 11/23/2022] Open
Abstract
Unraveling the heterogeneity in biological systems provides the key to understanding of the fundamental dynamics that regulate host pathogen relationships at the single cell level. While most studies have determined virus-host cell interactions using cultured cells in bulk, recent advances in deep protein profiling from single cells enable the understanding of the dynamic response equilibrium of single cells even within the same cell types. Mass cytometry allows the simultaneous detection of multiple proteins in single cells, which helps to evaluate alterations in multiple signaling networks that work in tandem in deciding the response of a cell to the presence of a pathogen or other stimulus. In applying this technique to studying varicella zoster virus (VZV), it was possible to better understand the molecular basis for lymphotropism of the virus and how virus-induced effects on T cells promoted skin tropism. While the ability of VZV to manifest itself in the skin is well established, how the virus is transported to the skin and causes the characteristic VZV skin lesions was not well elucidated. Through mass cytometry analysis of VZV-infected tonsil T cells, we were able to observe that VZV unleashes a “remodeling” program in the infected T cells that not only makes these T cells more skin tropic but also at the same time induces changes that make these T cells unlikely to respond to immune stimulation during the journey to the skin.
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Affiliation(s)
- Nandini Sen
- Department of Pediatrics, Stanford University, Stanford, CA, United States
| | - Gourab Mukherjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA, United States
| | - Ann M Arvin
- Department of Pediatrics, Stanford University, Stanford, CA, United States.,Department of Microbiology and Immunology, Stanford University, Stanford, CA, United States
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16
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Ma T, Luo X, George AF, Mukherjee G, Sen N, Spitzer TL, Giudice LC, Greene WC, Roan NR. HIV efficiently infects T cells from the endometrium and remodels them to promote systemic viral spread. eLife 2020; 9:55487. [PMID: 32452381 PMCID: PMC7250576 DOI: 10.7554/elife.55487] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [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: 01/26/2020] [Accepted: 04/17/2020] [Indexed: 12/16/2022] Open
Abstract
The female reproductive tract (FRT) is the most common site of infection during HIV transmission to women, but viral remodeling complicates characterization of cells targeted for infection. Here, we report extensive phenotypic analyses of HIV-infected endometrial cells by CyTOF, and use a 'nearest neighbor' bioinformatics approach to trace cells to their original pre-infection phenotypes. Like in blood, HIV preferentially targets memory CD4+ T cells in the endometrium, but these cells exhibit unique phenotypes and sustain much higher levels of infection. Genital cell remodeling by HIV includes downregulating TCR complex components and modulating chemokine receptor expression to promote dissemination of infected cells to lymphoid follicles. HIV also upregulates the anti-apoptotic protein BIRC5, which when blocked promotes death of infected endometrial cells. These results suggest that HIV remodels genital T cells to prolong viability and promote viral dissemination and that interfering with these processes might reduce the likelihood of systemic viral spread.
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Affiliation(s)
- Tongcui Ma
- Gladstone Institute of Virology and Immunology, San Francisco, United States.,Department of Urology, University of California, San Francisco, San Francisco, United States
| | - Xiaoyu Luo
- Gladstone Institute of Virology and Immunology, San Francisco, United States
| | - Ashley F George
- Gladstone Institute of Virology and Immunology, San Francisco, United States.,Department of Urology, University of California, San Francisco, San Francisco, United States
| | - Gourab Mukherjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, United States
| | - Nandini Sen
- Departments of Pediatrics and Microbiology and Immunology, Stanford School of Medicine, Stanford, United States
| | - Trimble L Spitzer
- Lt Col, United States AF; Women's Health Clinic, Naval Medical Center, Portsmouth, United States
| | - Linda C Giudice
- Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, San Francisco, United States
| | - Warner C Greene
- Gladstone Institute of Virology and Immunology, San Francisco, United States.,Department of Medicine, University of California, San Francisco, San Francisco, United States
| | - Nadia R Roan
- Gladstone Institute of Virology and Immunology, San Francisco, United States.,Department of Urology, University of California, San Francisco, San Francisco, United States
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Banerjee T, Mukherjee G, Dutta S, Ghosh P. A Large-Scale Constrained Joint Modeling Approach for Predicting User Activity, Engagement, and Churn With Application to Freemium Mobile Games. J Am Stat Assoc 2020. [DOI: 10.1080/01621459.2019.1611584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Trambak Banerjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA
| | - Gourab Mukherjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA
| | - Shantanu Dutta
- Department of Marketing, University of Southern California, Los Angeles, CA
| | - Pulak Ghosh
- Department of Decision Sciences and Information Systems, Indian Institute of Management Bangalore, Bangalore, India
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18
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Banik R, Bhattacharyya S, Biswas S, Bhattacharya S, Mukherjee G, Rajbanshi S, Dar S, Nandi S, Ali R, Chatterjee S, Das S, Das Gupta S, Ghugre SS, Goswami A, Mondal D, Mukhopadhyay S, Pai H, Pal S, Pandit D, Raut R, Ray P, Samanta S. Exploring the structure of Xe isotopes in A ~ 130 region: Single particle and collective excitations. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023204001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
High and medium spin structures of 130,131Xe have been studied using α-induced fusion-evaporation reaction and the Indian National Gamma Array (INGA) coupled with a digital data acquisition system. Various new band structures and near yrast levels of 131Xe have been established. The multipolarities of the observed transitions have been assigned on the basis of the DCO ratios and the polarization asymmetry measurements. Band structures based on 1-quasi-particle (qp), 3-qp configurations have been observed. A new Magnetic Rotational (MR) band based on 5-qp configuration has also been established in 131Xe. The MR band has been interpreted in terms of shears mechanism with principal axis cranking (SPAC) calculations. Shell Model calculations are carried out to describe the non yrast states of 131Xe above the 11/2− isomer. New excited states have also been identified in 130Xe, produced in the same reaction.
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19
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Mukherjee G, Reinhard FGC, Bagha UK, Sastri CV, de Visser SP. Sluggish reactivity by a nonheme iron(iv)-tosylimido complex as compared to its oxo analogue. Dalton Trans 2020; 49:5921-5931. [DOI: 10.1039/d0dt00018c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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]
Abstract
A comparative spectroscopic and computational study of reactivity between ferryl-tosylimido and ferryl-oxo complexes of two biomimetic model systems. The Fe(iv)-tosylimido complex was found to be sluggish in comparison to its fellow oxo counterpart.
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Affiliation(s)
- Gourab Mukherjee
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Fabián G. Cantú Reinhard
- The Manchester Institute of Biotechnology and Department of Chemical Engineering and Analytical Science
- The University of Manchester
- Manchester M1 7DN
- UK
| | | | | | - Sam P. de Visser
- The Manchester Institute of Biotechnology and Department of Chemical Engineering and Analytical Science
- The University of Manchester
- Manchester M1 7DN
- UK
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20
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Banerjee T, Mukherjee G, Sun W. Adaptive Sparse Estimation With Side Information. J Am Stat Assoc 2019. [DOI: 10.1080/01621459.2019.1679639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Trambak Banerjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA
| | - Gourab Mukherjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA
| | - Wenguang Sun
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA
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21
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Colomban C, Tobing AH, Mukherjee G, Sastri CV, Sorokin AB, Visser SP. Cover Feature: Mechanism of Oxidative Activation of Fluorinated Aromatic Compounds by N‐Bridged Diiron‐Phthalocyanine: What Determines the Reactivity? (Chem. Eur. J. 63/2019). Chemistry 2019. [DOI: 10.1002/chem.201904315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Cédric Colomban
- Institut de Recherches sur la Catalyse et l'Environnement de LyonIRCELYON, UMR 5256CNRS Université Lyon 1 2 Av. Albert Einstein 69626 Villeurbanne Cedex France
| | - Anthonio H. Tobing
- The Manchester Institute of Biotechnology and Department of, Chemical Engineering and Analytical ScienceThe University of, Manchester 131 Princess Street Manchester M1 7DN UK
| | - Gourab Mukherjee
- The Manchester Institute of Biotechnology and Department of, Chemical Engineering and Analytical ScienceThe University of, Manchester 131 Princess Street Manchester M1 7DN UK
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - Chivukula V. Sastri
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - Alexander B. Sorokin
- Institut de Recherches sur la Catalyse et l'Environnement de LyonIRCELYON, UMR 5256CNRS Université Lyon 1 2 Av. Albert Einstein 69626 Villeurbanne Cedex France
| | - Sam P. Visser
- The Manchester Institute of Biotechnology and Department of, Chemical Engineering and Analytical ScienceThe University of, Manchester 131 Princess Street Manchester M1 7DN UK
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Colomban C, Tobing AH, Mukherjee G, Sastri CV, Sorokin AB, de Visser SP. Mechanism of Oxidative Activation of Fluorinated Aromatic Compounds by N-Bridged Diiron-Phthalocyanine: What Determines the Reactivity? Chemistry 2019; 25:14320-14331. [PMID: 31339185 DOI: 10.1002/chem.201902934] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/19/2019] [Indexed: 11/06/2022]
Abstract
The biodegradation of compounds with C-F bonds is challenging due to the fact that these bonds are stronger than the C-H bond in methane. In this work, results on the unprecedented reactivity of a biomimetic model complex that contains an N-bridged diiron-phthalocyanine are presented; this model complex is shown to react with perfluorinated arenes under addition of H2 O2 effectively. To get mechanistic insight into this unusual reactivity, detailed density functional theory calculations on the mechanism of C6 F6 activation by an iron(IV)-oxo active species of the N-bridged diiron phthalocyanine system were performed. Our studies show that the reaction proceeds through a rate-determining electrophilic C-O addition reaction followed by a 1,2-fluoride shift to give the ketone product, which can further rearrange to the phenol. A thermochemical analysis shows that the weakest C-F bond is the aliphatic C-F bond in the ketone intermediate. The oxidative defluorination of perfluoroaromatics is demonstrated to proceed through a completely different mechanism compared to that of aromatic C-H hydroxylation by iron(IV)-oxo intermediates such as cytochrome P450 Compound I.
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Affiliation(s)
- Cédric Colomban
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon, IRCELYON, UMR 5256, CNRS Université Lyon 1, 2 Av. Albert Einstein, 69626, Villeurbanne Cedex, France
| | - Anthonio H Tobing
- The Manchester Institute of Biotechnology and Department of, Chemical Engineering and Analytical Science, The University of, Manchester, 131 Princess Street, Manchester, M1 7DN, UK
| | - Gourab Mukherjee
- The Manchester Institute of Biotechnology and Department of, Chemical Engineering and Analytical Science, The University of, Manchester, 131 Princess Street, Manchester, M1 7DN, UK.,Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Chivukula V Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Alexander B Sorokin
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon, IRCELYON, UMR 5256, CNRS Université Lyon 1, 2 Av. Albert Einstein, 69626, Villeurbanne Cedex, France
| | - Sam P de Visser
- The Manchester Institute of Biotechnology and Department of, Chemical Engineering and Analytical Science, The University of, Manchester, 131 Princess Street, Manchester, M1 7DN, UK
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23
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Mukherjee G, Alili A, Barman P, Kumar D, Sastri CV, de Visser SP. Interplay Between Steric and Electronic Effects: A Joint Spectroscopy and Computational Study of Nonheme Iron(IV)-Oxo Complexes. Chemistry 2019; 25:5086-5098. [PMID: 30720909 DOI: 10.1002/chem.201806430] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Indexed: 01/05/2023]
Abstract
Iron is an essential element in nonheme enzymes that plays a crucial role in many vital oxidative transformations and metabolic reactions in the human body. Many of those reactions are regio- and stereospecific and it is believed that the selectivity is guided by second-coordination sphere effects in the protein. Here, results are shown of a few engineered biomimetic ligand frameworks based on the N4Py (N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine) scaffold and the second-coordination sphere effects are studied. For the first time, selective substitutions in the ligand framework have been shown to tune the catalytic properties of the iron(IV)-oxo complexes by regulating the steric and electronic factors. In particular, a better positioning of the oxidant and substrate in the rate-determining transition state lowers the reaction barriers. Therefore, an optimum balance between steric and electronic factors mediates the ideal positioning of oxidant and substrate in the rate-determining transition state that affects the reactivity of high-valent reaction intermediates.
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Affiliation(s)
- Gourab Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Aligulu Alili
- The Manchester Institute of Biotechnology and School of Chemical, Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK
| | - Prasenjit Barman
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Devesh Kumar
- Department of Applied Physics, Babasaheb Bhimrao Ambedkar University, School for Physical Sciences, Vidya Vihar, Rae Bareilly Road, Lucknow, 226025, UP, India
| | - Chivukula V Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Sam P de Visser
- The Manchester Institute of Biotechnology and School of Chemical, Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK
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Mukherjee G, Ghosh S, Mukherjee A, Mondal T, Mondal S. Studies on the trends of transfusion-transmissible infections in a district-level hospital in West Bengal, India. BLDE Univ J Health Sci 2019. [DOI: 10.4103/bjhs.bjhs_46_18] [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: 11/04/2022] Open
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25
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Nag SS, Mukherjee G, Barman P, Sastri CV. Influence of induced steric on the switchover reactivity of mononuclear Cu(II)-alkylperoxo complexes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Kondev F, Hartley D, Orford R, Clark J, Savard G, Auranen K, Ayangeakaa A, Bottoni S, Carpenter M, Copp P, Hicks K, Hoffman C, Janssens R, Kay B, Lauritsen T, Li T, Marley S, Morgan G, Mukherjee G, Nandi S, Reviol W, Sethi J, Seweryniak D, Stolze S, Wu J, Yadav R, Zhu S. Masses and Beta-decay Studies of Neutron-rich Nuclei using the X-array and Gammasphere. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201922301028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Properties of neutron-rich nuclei in the A˜160 region are important for achieving a better understanding of the nuclear structure in this region where little is known owing to diffculties in the production of these nuclei at the present nuclear physics facilities. These properties are essential ingredients in the interpretation of the rareearth peak at A˜160 in the r process abundance distribution, since theoretical models are sensitive to nuclear structure input. Predicated on these ideas, we have initiated a new experimental program at Argonne National Laboratory. During the first experiment, beams from the Californium Rare Isotope Breeder Upgrade radioactive beam facility were used in conjunction with the SATURN decay station and the X-array. We focused initially on several odd-odd nuclei, where β decays of both the ground state and an excited isomer were investigated. Because of the spin difference, a variety of structures in the daughter nuclei were selectively populated and characterized based on their decay properties. Mass measurements using the Canadian Penning Trap aimed at establishing the excitation energy of the β-decaying isomers were also carried out. Evidence was found for a change in the single-particle structure, which in turn results in the formation of a sizable N=98 sub-shell gap at large deformation. Results from the first experimental campaign using the newly-commissioned β-decay station at Gammasphere are also presented.
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Biswas B, Dabkara D, Ganguly S, Shrimali R, Ghosh J, E P, Midha D, Mukherjee G, Parihar M, Mishra D, Arora N. P3.01-07 Outcome and Prognostic Factors in ALK+ve Metastatic Adenocarcinoma of Lung: Single Center Experience From Eastern India. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1567] [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: 10/28/2022]
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Ganguly S, Biswas B, Ghosh J, Shrimali R, Sen S, Mukhopadhyay S, Mukherjee G, Midha D, Dabkara D, Basu A, Chatterjee M, Hassan A, Das S. P1.12-19 Clinico-Pathological Characteristics and Treatment Outcome in Small Cell Lung Cancer: A Single Institutional Experience. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.854] [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: 11/25/2022]
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Cavrois M, Banerjee T, Mukherjee G, Raman N, Hussien R, Rodriguez BA, Vasquez J, Spitzer MH, Lazarus NH, Jones JJ, Ochsenbauer C, McCune JM, Butcher EC, Arvin AM, Sen N, Greene WC, Roan NR. Mass Cytometric Analysis of HIV Entry, Replication, and Remodeling in Tissue CD4+ T Cells. Cell Rep 2018; 20:984-998. [PMID: 28746881 DOI: 10.1016/j.celrep.2017.06.087] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/17/2017] [Accepted: 06/28/2017] [Indexed: 12/25/2022] Open
Abstract
To characterize susceptibility to HIV infection, we phenotyped infected tonsillar T cells by single-cell mass cytometry and created comprehensive maps to identify which subsets of CD4+ T cells support HIV fusion and productive infection. By comparing HIV-fused and HIV-infected cells through dimensionality reduction, clustering, and statistical approaches to account for viral perturbations, we identified a subset of memory CD4+ T cells that support HIV entry but not viral gene expression. These cells express high levels of CD127, the IL-7 receptor, and are believed to be long-lived lymphocytes. In HIV-infected patients, CD127-expressing cells preferentially localize to extrafollicular lymphoid regions with limited viral replication. Thus, CyTOF-based phenotyping, combined with analytical approaches to distinguish between selective infection and receptor modulation by viruses, can be used as a discovery tool.
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Affiliation(s)
- Marielle Cavrois
- Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Trambak Banerjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA 90089, USA
| | - Gourab Mukherjee
- Department of Data Sciences and Operations, University of Southern California, Los Angeles, CA 90089, USA
| | - Nandhini Raman
- Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA
| | - Rajaa Hussien
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Brandon Aguilar Rodriguez
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Joshua Vasquez
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Matthew H Spitzer
- Department of Microbiology and Immunology and the Helen Diller Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Nicole H Lazarus
- Department of Pathology, Stanford School of Medicine, Stanford, CA 94305-5324, USA; Palo Alto Veterans Institute for Research and the Palo Alto Veterans Affairs Health Care Center, Palo Alto, CA 94304-1290, USA
| | - Jennifer J Jones
- Department of Medicine, University of Alabama, Birmingham, AL 35233-1912, USA
| | - Christina Ochsenbauer
- Department of Medicine, University of Alabama, Birmingham, AL 35233-1912, USA; Center for AIDS Research, University of Alabama, Birmingham, AL 35294-2107, USA
| | - Joseph M McCune
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Eugene C Butcher
- Department of Pathology, Stanford School of Medicine, Stanford, CA 94305-5324, USA; Palo Alto Veterans Institute for Research and the Palo Alto Veterans Affairs Health Care Center, Palo Alto, CA 94304-1290, USA
| | - Ann M Arvin
- Departments of Pediatrics and Microbiology and Immunology, Stanford School of Medicine, Stanford, CA 94305-5324, USA
| | - Nandini Sen
- Departments of Pediatrics and Microbiology and Immunology, Stanford School of Medicine, Stanford, CA 94305-5324, USA
| | - Warner C Greene
- Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Nadia R Roan
- Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA; Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA.
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Mukherjee G, Lee CWZ, Nag SS, Alili A, Cantú Reinhard FG, Kumar D, Sastri CV, de Visser SP. Dramatic rate-enhancement of oxygen atom transfer by an iron(iv)-oxo species by equatorial ligand field perturbations. Dalton Trans 2018; 47:14945-14957. [DOI: 10.1039/c8dt02142b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The reactivity and characterization of a novel iron(iv)-oxo species is reported that gives enhanced reactivity as a result of second-coordination sphere perturbations of the ligand system.
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Affiliation(s)
- Gourab Mukherjee
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Calvin W. Z. Lee
- The Manchester Institute of Biotechnology and the School of Chemical Engineering and Analytical Science
- The University of Manchester
- Manchester M1 7DN
- UK
| | | | - Aligulu Alili
- The Manchester Institute of Biotechnology and the School of Chemical Engineering and Analytical Science
- The University of Manchester
- Manchester M1 7DN
- UK
| | - Fabián G. Cantú Reinhard
- The Manchester Institute of Biotechnology and the School of Chemical Engineering and Analytical Science
- The University of Manchester
- Manchester M1 7DN
- UK
| | - Devesh Kumar
- Department of Applied Physics
- School for Physical Sciences
- Babasaheb Bhimrao Ambedkar University
- Lucknow 226025
- India
| | | | - Sam P. de Visser
- The Manchester Institute of Biotechnology and the School of Chemical Engineering and Analytical Science
- The University of Manchester
- Manchester M1 7DN
- UK
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Cantú Reinhard FG, Barman P, Mukherjee G, Kumar J, Kumar D, Kumar D, Sastri CV, de Visser SP. Keto-Enol Tautomerization Triggers an Electrophilic Aldehyde Deformylation Reaction by a Nonheme Manganese(III)-Peroxo Complex. J Am Chem Soc 2017; 139:18328-18338. [PMID: 29148746 DOI: 10.1021/jacs.7b10033] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Oxygen atom transfer by high-valent enzymatic intermediates remains an enigma in chemical catalysis. In particular, manganese is an important first-row metal involved in key biochemical processes, including the biosynthesis of molecular oxygen (through the photosystem II complex) and biodegradation of toxic superoxide to hydrogen peroxide by superoxide dismutase. Biomimetic models of these biological systems have been developed to gain understanding on the structure and properties of short-lived intermediates but also with the aim to create environmentally benign oxidants. In this work, we report a combined spectroscopy, kinetics and computational study on aldehyde deformylation by two side-on manganese(III)-peroxo complexes with bispidine ligands. Both manganese(III)-peroxo complexes are characterized by UV-vis and mass spectrometry techniques, and their reactivity patterns with aldehydes was investigated. We find a novel mechanism for the reaction that is initiated by a hydrogen atom abstraction reaction, which enables a keto-enol tautomerization in the substrate. This is an essential step in the mechanism that makes an electrophilic attack on the olefin bond possible as the attack on the aldehyde carbonyl is too high in energy. Kinetics studies determine a large kinetic isotope effect for the replacement of the transferring hydrogen atom by deuterium, while replacing the transferring hydrogen atom by a methyl group makes the substrate inactive and hence confirm the hypothesized mechanism. Our new mechanism is confirmed with density functional theory modeling on the full mechanism and rationalized through valence bond and thermochemical cycles. Our unprecedented new mechanism may have relevance to biological and biomimetic chemistry processes in general and gives insight into the reactivity patterns of metal-peroxo and metal-hydroperoxo intermediates in general.
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Affiliation(s)
- Fabián G Cantú Reinhard
- The Manchester Institute of Biotechnology and School of Chemical Engineering and Analytical Science, The University of Manchester , 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Prasenjit Barman
- Department of Chemistry, Indian Institute of Technology Guwahati 781039, Assam, India
| | - Gourab Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati 781039, Assam, India
| | - Jitendra Kumar
- Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University , Lucknow 226025, UP, India
| | - Deep Kumar
- Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University , Lucknow 226025, UP, India
| | - Devesh Kumar
- Department of Applied Physics, School for Physical Sciences, Babasaheb Bhimrao Ambedkar University , Lucknow 226025, UP, India
| | - Chivukula V Sastri
- Department of Chemistry, Indian Institute of Technology Guwahati 781039, Assam, India
| | - Sam P de Visser
- The Manchester Institute of Biotechnology and School of Chemical Engineering and Analytical Science, The University of Manchester , 131 Princess Street, Manchester M1 7DN, United Kingdom
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Affiliation(s)
- Peter Radchenko
- University of Southern California Los Angeles USA
- University of Sydney Business School Darlington Australia
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34
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Dhal A, Mukherjee G, Bhattacharjee M, Naik V, Mukhopadhyay S, Pandit D, Pal S, Mondal D, Karmakar P, Roy T, Asgar M, Bhattacharya S, Bhattacharyya S, Bhattacharya C, Banerjee S, Chakrabarti A. Decay measurements of 43K( β−) 43Ca by HRS and TAS. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714610013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Saha C, Mukherjee G, Agarwal-Banka P, Seal A. A consortium of non-rhizobial endophytic microbes from Typha angustifolia functions as probiotic in rice and improves nitrogen metabolism. Plant Biol (Stuttg) 2016; 18:938-946. [PMID: 27453497 DOI: 10.1111/plb.12485] [Citation(s) in RCA: 10] [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: 05/28/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
Endophytic microbes isolated from plants growing in nutrient-deficient environments often possess properties that improve nutrition of agriculturally important plants. A consortium of non-rhizobial endophytic microbes isolated from a macrophyte Typha angustifolia growing in the marginal wetlands associated with a Uranium mine was characterized for their beneficial effect on rice and the mechanisms of growth promotion were investigated. The microbes were identified and characterized for their potential plant growth promoting (PGP) properties. Effect of these microbes on nitrogen (N)-metabolism of rice was tested as Typha endophytes were predominantly (N)-fixing. Relative N-use efficiency and expression of genes involved in N-uptake and assimilation were investigated in treated plants. Evidence of horizontal gene transfer (HGT) of dinitrogen reductase gene was observed within the consortium from a Pseudomonas stutzeri strain. The consortium behaved as plant probiotic and showed substantial growth benefits to Typha, their natural host as well as to rice. Typha endophytes colonized rice endosphere significantly increasing biomass, shoot length and chlorophyll content in rice plants both under N-sufficient and N-deficient conditions. N-uptake and assimilation genes were upregulated in plants treated with the endophytes even after three weeks post infection. Our results suggested, HGT of nitrogen-fixation trait to be highly prevalent among endophytes isolated from nutrient-poor habitats of the uranium mine. A long-term nitrogen deficiency response in the treated plants was elicited by the consortium improving N-uptake, assimilation and relative N-use efficiency of rice plants. This appeared to be at least one of the main strategies of plant growth promotion.
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Affiliation(s)
- C Saha
- Department of Biotechnology, Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, Kolkata, India
| | - G Mukherjee
- Department of Biotechnology, Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, Kolkata, India
| | | | - A Seal
- Department of Biotechnology, Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, Kolkata, India.
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Mukherjee G, Konar H, Mandve P, Sharma S, Ghosh S, Chakraborty P, Chakravarty B. Progesterone supplementation in PCOS women undergoing clomiphene citrate stimulated IUI may improve pregnancy by increasing uterine blood. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Arunsingh M, Shrimali R, Dabkara D, Biswas B, Midha D, Parihar M, Mukherjee G, Mishra D, Chatterjee S. 58 Crizotinib toxicity, dose adjustments and initial response: a single centre experience. Lung Cancer 2016. [DOI: 10.1016/s0169-5002(16)30075-7] [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: 11/30/2022]
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38
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Chatterjee S, Arora N, Parihar M, Midha D, Mukherjee G, Dabkara D, Biswas B, Mishra D, Shrimali R. 9 EGFR and EML4-Alk testing for non-small cell lung cancer patients – a single centre experience. Lung Cancer 2016. [DOI: 10.1016/s0169-5002(16)30026-5] [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: 11/28/2022]
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Srivastava V, Bhattacharya C, Rana T, Manna S, Kundu S, Bhattacharya S, Banerjee K, Roy P, Pandey R, Mukherjee G, Ghosh T, Meena J, Roy T, Chaudhuri A, Sinha M, Saha A, Asgar MA, Dey A, Roy S, Moin Shaikh M. Excited states of 26Al studied via the reaction 27Al(d,t). EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611707022] [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: 11/14/2022] Open
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Abstract
We consider estimating the predictive density under Kullback-Leibler loss in an ℓ0 sparse Gaussian sequence model. Explicit expressions of the first order minimax risk along with its exact constant, asymptotically least favorable priors and optimal predictive density estimates are derived. Compared to the sparse recovery results involving point estimation of the normal mean, new decision theoretic phenomena are seen. Suboptimal performance of the class of plug-in density estimates reflects the predictive nature of the problem and optimal strategies need diversification of the future risk. We find that minimax optimal strategies lie outside the Gaussian family but can be constructed with threshold predictive density estimates. Novel minimax techniques involving simultaneous calibration of the sparsity adjustment and the risk diversification mechanisms are used to design optimal predictive density estimates.
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Affiliation(s)
- Gourab Mukherjee
- Department of Data Sciences and Operations, Marshall School of Business, University of Southern California, Los Angeles, California 90089-0809, USA
| | - Iain M Johnstone
- Department of Statistics, Sequoia Hall, 390 Serra Mall, Stanford University, Stanford, California 94305-4065, USA
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Babad J, Mukherjee G, Follenzi A, Ali R, Roep BO, Shultz LD, Santamaria P, Yang OO, Goldstein H, Greiner DL, DiLorenzo TP. Generation of β cell-specific human cytotoxic T cells by lentiviral transduction and their survival in immunodeficient human leucocyte antigen-transgenic mice. Clin Exp Immunol 2015; 179:398-413. [PMID: 25302633 DOI: 10.1111/cei.12465] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2014] [Indexed: 01/23/2023] Open
Abstract
Several β cell antigens recognized by T cells in the non-obese diabetic (NOD) mouse model of type 1 diabetes (T1D) are also T cell targets in the human disease. While numerous antigen-specific therapies prevent diabetes in NOD mice, successful translation of rodent findings to patients has been difficult. A human leucocyte antigen (HLA)-transgenic mouse model incorporating human β cell-specific T cells might provide a better platform for evaluating antigen-specific therapies. The ability to study such T cells is limited by their low frequency in peripheral blood and the difficulty in obtaining islet-infiltrating T cells from patients. We have worked to overcome this limitation by using lentiviral transduction to 'reprogram' primary human CD8 T cells to express three T cell receptors (TCRs) specific for a peptide derived from the β cell antigen islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP265-273 ) and recognized in the context of the human class I major histocompatibility complex (MHC) molecule HLA-A2. The TCRs bound peptide/MHC multimers with a range of avidities, but all bound with at least 10-fold lower avidity than the anti-viral TCR used for comparison. One exhibited antigenic recognition promiscuity. The β cell-specific human CD8 T cells generated by lentiviral transduction with one of the TCRs released interferon (IFN)-γ in response to antigen and exhibited cytotoxic activity against peptide-pulsed target cells. The cells engrafted in HLA-A2-transgenic NOD-scid IL2rγ(null) mice and could be detected in the blood, spleen and pancreas up to 5 weeks post-transfer, suggesting the utility of this approach for the evaluation of T cell-modulatory therapies for T1D and other T cell-mediated autoimmune diseases.
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Affiliation(s)
- J Babad
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
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Bhattacharya S, Chaudhuri A, Ghosh T, Banerjee K, Bhattacharya C, Kundu S, Mukherjee G, Rana TK, Roy P, Pandey R, Bhattacharya P. Fusion – fission dynamics: fragment mass distribution studies. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158600004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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43
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Srivastava V, Bhattacharya C, Rana TK, Manna S, Kundu S, Bhattacharya S, Banerjee K, Roy P, Pandey R, Mukherjee G, Ghosh TK, Meena JK, Roy T, Chaudhuri A, Sinha M, Saha A, Dey A, Asgar MA, Roy S, Shaikh MM. Structure of26Al studied by one - nucleon transfer reaction27Al(d,t). EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158600055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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44
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Rana TK, Bhattacharya C, Manna S, Srivastava V, Banerjee K, Kundu S, Roy P, Pandey R, Chaudhuri A, Roy T, Ghosh TK, Mukherjee G, Bhattacharya S, Meena JK, Pandit SK, Mahata K, Patale P, Shrivastava A, Nanal V. Fragment emission studies in low energy light heavy-ion reactions. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158600036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Sachdev P, Banerjee M, Mukherjee G. Magnetic and Microstructural Studies on PVA/Co Nanocomposite Prepared by Ion Beam Sputtering Technique. DEFENCE SCI J 2014. [DOI: 10.14429/dsj.64.7332] [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: 11/13/2022]
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46
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Pandit P, Banerjee M, Mukherjee G, Parikh R, Deshpanday U, Gupta A. Influence of Temperature on the Conformational Guided Physical Properties of Ultrathin Films of PLLA. DEFENCE SCI J 2014. [DOI: 10.14429/dsj.64.7329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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47
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Mukherjee G. Staudinger’s Concept on Polymer Science and the Impact of Ziegler-Natta Catalyst on Polymer Technology. DEFENCE SCI J 2014. [DOI: 10.14429/dsj.64.7183] [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: 11/13/2022]
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48
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Gohil M, Roy P, Banerjee K, Bhattacharya S, Bhattacharya C, Kundu S, Rana TK, Ghosh TK, Mukherjee G, Pandey R, Meena JK, Pai H, Srivastava V, Dey A, Pandit D, Mukhopadhyay S, Pal S, Banerjee SR. Angular momentum dependence of the nuclear level density parameter. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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49
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Rana TK, Bhattacharya C, Bhattacharya S, Kundu S, Banerjee K, Ghosh TK, Mukherjee G, Pandey R, Roy P, Srivastava V, Gohil M, Meena JK, Pai H, Saha AK, Sahoo JK, Saha RM. Further limit on 3α decay of Hoyle state. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603072] [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: 11/14/2022] Open
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50
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Bhattacharyya S, Banerjee D, Das SK, Bhattacharya S, Das Gupta S, Mukherjee G, Bhattacharjee T, Chowdhury A, Das P, Guin R, Pai H. Lifetime measurements and decay spectroscopy of 132I. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146602009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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