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Kanekar AS, Bhattacharyya A, Mohapatra PK. Ligand structure and diluent nature in defining improved Am 3+ and Cm 3+ separation using diglycolamides: a combined solvent extraction and DFT study. Dalton Trans 2024; 53:5871-5880. [PMID: 38415375 DOI: 10.1039/d3dt03261b] [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: 02/29/2024]
Abstract
Separation of Am3+ and Cm3+ is one of the most challenging yet unavoidable steps in the back end of the nuclear cycle. Various ligands evaluated for Am/Cm separation have their own merits and demerits, and not a single ligand has been uniquely proposed for this purpose. In the present work, we evaluated N,N,N',N'-tetra-n-octyldiglycolamide (TODGA) vis-à-vis N,N,N',N'-tetra-2-ethylhexyldiglycolamide (T2EHDGA) in combination with a hydrophilic 2,6-bis(1,2,4-triazinyl)pyridine (SO3PhBTP) derivative in the aqueous phase for the separation of Am3+ and Cm3+ from nitric acid medium. The results showed that marginal selectivity for Am3+ over Cm3+ was observed with T2EHDGA in the presence of SO3PhBTP, which was attributed to the difference in the entropy change for their extraction from both the temperature-dependent liquid-liquid extraction and computational studies.
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Affiliation(s)
- A S Kanekar
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
| | - A Bhattacharyya
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
| | - P K Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
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Bhattacharyya A, Laycock H, Brett SJ, Beatty F, Kemp HI. Health care professionals' experiences of pain management in the intensive care unit: a qualitative study. Anaesthesia 2023. [PMID: 38153304 DOI: 10.1111/anae.16209] [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] [Accepted: 11/24/2023] [Indexed: 12/29/2023]
Abstract
Despite the existence of evidence-based guidelines for the assessment and management of pain in the critical care setting, the prevalence of acute pain remains high. Inadequate pain management is associated with longer duration of mechanical ventilation, reduced capacity for rehabilitation and long-term psychological sequelae. This study aimed to describe the experiences of pain management from healthcare professionals working in intensive care units. Healthcare professionals were recruited from intensive care units in London, UK using a purposive sampling technique. Semi-structured interviews were transcribed verbatim. Transcripts were analysed using an inductive thematic analysis technique. Thirty participants were recruited from eight diverse intensive care units. Five themes were identified. First, there was a lack of consensus in pain assessment in the ICU where nursing staff described more knowledge and confidence of validated pain measures than physicians, and concerns over validity and usability were raised. Second, there was a universal perception of resource availability impacting the quality of pain management including high clinical workload, staff turnover and availability of certain pain management techniques. Third, acknowledgement of the importance of pain management was highest in those with experience of interacting with critical care survivors. Fourth, participants described their own emotional reaction to managing those in pain which influenced their learning. Finally, there was a perception that, due to the complexity of the intensive care unit population, pain was de-prioritised and there were conflicting views as to whether standardised analgosedation algorithms were useful. This study provides evidence to suggest interdisciplinary training, collaboratively designed decision-making tools, prioritisation initiatives and research priorities are areas that could be targeted to improve pain management in critical care.
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Affiliation(s)
| | - H Laycock
- Department of Anaesthesia, Great Ormond Street Hospital, London, UK
| | - S J Brett
- Division of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, UK
- Directorate of Critical Care, Imperial College Healthcare NHS Trust, London, UK
| | - F Beatty
- Guy's and St Thomas' NHS Trust, London, UK
| | - H I Kemp
- The Pain Research Group, Imperial College London, London, UK
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Ghosh P, Mukherjee S, Ghosh S, Gangopadhyay A, Keswani T, Sengupta A, Sarkar S, Bhattacharyya A. Estimating nitric oxide (NO) from MDSCs by Griess method. Methods Cell Biol 2023; 184:149-158. [PMID: 38555154 DOI: 10.1016/bs.mcb.2023.07.004] [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] [Indexed: 04/02/2024]
Abstract
The functional importance of nitric oxide (NO) in the fields of immunology concerning its antimicrobial, anti-tumoral, anti-inflammatory, and immunosuppressive effects have made it inevitable to study its secretion from various cells. Nitrogen oxide synthase (NOS) is the enzyme responsible for synthesizing NO and its three isoforms function in a cell-dependent manner. NO is oxidized rapidly to Reactive nitrogen oxide species (RNOS) through which the roles of NO are being carried out. One of the major immune cells secreting NO is myeloid-derived suppressor cells (MDSCs). The function of these MDSCs in the suppression of T-cell proliferation as well as T-cell differentiation is found to be dependent on NO secretion. Apart from T-cell suppressive activity, NO is also known to interfere with natural killer (NK) cell functions. A convenient method to estimate NO secretion is by using Griess reagent named after Johann Peter Griess. In this method, NO reacts with the reagents to form a colored azo dye detectable using a microplate reader at a wavelength of 548nm. In this chapter, we summarized the detailed method of estimating NO from MDSCs by the Griess method.
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Affiliation(s)
- Pronabesh Ghosh
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Saikat Mukherjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Soubhik Ghosh
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Anwesha Gangopadhyay
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Tarun Keswani
- Center for Immunological and Inflammatory Diseases, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Anirban Sengupta
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Samrat Sarkar
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, India.
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Mukherjee S, Ghosh S, Bawali S, Chatterjee R, Saha A, Sengupta A, Keswani T, Sarkar S, Ghosh P, Chakraborty S, Khamaru P, Bhattacharyya A. Administration of soluble gp130Fc disrupts M-1 macrophage polarization, dendritic cell activation, MDSC expansion and Th-17 induction during experimental cerebral malaria. Int Immunopharmacol 2023; 123:110671. [PMID: 37494839 DOI: 10.1016/j.intimp.2023.110671] [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: 05/12/2023] [Revised: 07/05/2023] [Accepted: 07/17/2023] [Indexed: 07/28/2023]
Abstract
Regulatory effect of IL-6 on various immune cells plays a crucial role during experimental cerebral malaria pathogenesis. IL-6 neutralization can restore distorted ratios of myeloid dendritic cells and plasmacytoid dendritic cells as well as the balance between Th-17 and T-regulatory cells. IL-6 can also influence immune cells through classical and trans IL-6 signalling pathways. As trans IL-6 signalling is reportedly involved during malaria pathogenesis, we focused on studying the effects of trans IL-6 signalling blockade on various immune cell populations and how they regulate ECM progression. Results show that administration of sgp130Fc recombinant chimera protein lowers the parasitemia, increases the survivability of Plasmodium berghei ANKA infected mice, and restores the distorted ratios of M1/M2 macrophage, mDC/pDC, and Th-17/Treg. IL-6 trans signalling blockade has been found to affect both expansion of myeloid derived suppressor cells (MDSCs) and expression of inflammatory markers on them during Plasmodium berghei ANKA infection indicating that trans IL-6 signalling might regulate various immune cells and their function during ECM. In this work for the first time, we delineate the effect of sgp130Fc administration on influencing the immunological changes within the host secondary lymphoid organ during ECM induced by Plasmodium berghei ANKA infection.
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Affiliation(s)
- Saikat Mukherjee
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Soubhik Ghosh
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Sriparna Bawali
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Rimbik Chatterjee
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Atreyee Saha
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Anirban Sengupta
- Department of Biomedical and Clinical Sciences, Linköping University, 58185 Linköping, Sweden
| | - Tarun Keswani
- Center for Immunological and Inflammatory Diseases, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA 149 13th Street Charlestown, MA 02129, USA
| | - Samrat Sarkar
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Pronabesh Ghosh
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Sayan Chakraborty
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Poulomi Khamaru
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta. 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India.
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Dey S, Nath S, Alam Ansari T, Biswas A, Barman F, Mukherjee S, Gopal G, Bhattacharyya A, Mukherjee A, Kundu R, Paul S. Application of green synthesized bimetallic nZVI-Cu nanoparticle as a sustainable alternative to chemical fertilizers to enhance growth and photosynthetic efficiency of rice seedlings. Plant Physiol Biochem 2023; 201:107837. [PMID: 37331074 DOI: 10.1016/j.plaphy.2023.107837] [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: 02/03/2023] [Revised: 05/23/2023] [Accepted: 06/12/2023] [Indexed: 06/20/2023]
Abstract
Application of nanomaterials in agriculture has been extensively explored over the past decade leading to a wide ambit of nanoparticle-based agrochemicals. Metallic nanoparticles consisting of plant macro- and micro-nutrients have been used as nutritional supplements for plants through soil amendments, foliar sprays, or seed treatment. However, most of these studies emphasize monometallic nanoparticles which limit the range of usage and effectivity of such nanoparticles (NPs). Hence, we have employed a bimetallic nanoparticle (BNP) consisting of two different micro-nutrients (Cu & Fe) in rice plants to test its efficacy in terms of growth and photosynthesis. Several experiments were designed to assess growth (root-shoot length, relative water content) and photosynthetic parameters (pigment content, relative expression of rbcS, rbcL & ChlGetc.). To determine whether the treatment induced any oxidative stress or structural anomalies within the plant cells, histochemical staining, anti-oxidant enzyme activities, FTIR, and SEM micrographs were undertaken. Results indicated that foliar application of 5 mg L-1 BNP increased vigor and photosynthetic efficiency whereas 10 mg L-1 concentration induced oxidative stress to some extent. Furthermore, the BNP treatment did not perturb the structural integrity of the exposed plant parts and also did not induce any cytotoxicity. Application of BNPs in agriculture has not been explored extensively to date and this study is one of the first reports that not only documents the effectivity of Cu-Fe BNP but also critically explores the safety of its usage on rice plants making it a useful lead to design new BNPs and explore their efficacy.
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Affiliation(s)
- Swarnali Dey
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Shreya Nath
- Institute of Health Sciences, Presidency University (2nd Campus), Action Area-ID, New Town, Kolkata, 700156, India
| | - Tauhid Alam Ansari
- Institute of Health Sciences, Presidency University (2nd Campus), Action Area-ID, New Town, Kolkata, 700156, India
| | - Ankita Biswas
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Falguni Barman
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Saikat Mukherjee
- Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Geetha Gopal
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, 632014, India
| | - Arindam Bhattacharyya
- Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, 632014, India
| | - Rita Kundu
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Subhabrata Paul
- Institute of Health Sciences, Presidency University (2nd Campus), Action Area-ID, New Town, Kolkata, 700156, India.
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Khamaru P, Chakraborty S, Bhattacharyya A. AMPK activator AICAR in combination with anti-mouse IL10 mAb restores the functionality of intra-tumoral Tfh cells in the 4T1 mouse model. Cell Immunol 2022; 382:104639. [PMID: 36375313 DOI: 10.1016/j.cellimm.2022.104639] [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: 05/03/2022] [Revised: 10/12/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022]
Abstract
4T1 cell-mediated TNBC breast cell carcinoma is a highly malignant mice tumor model which resembles an advanced stage of breast cancer in humans. Tumor progression occurs depending on the intra-tumoral balance of pro- and anti- tumorigenic immune cells. Enhancement of T-cell-mediated anti-tumor immunity will be advantageous for inhibiting tumor progression and improving the efficacy of cancer therapy. This study is focused on alleviating suppressed anti-tumor immune response by improving CD4+ T follicular helper cell (Tfh) response in 4T1 mice. We employed anti-IL10 mAb along with metabolic drugs 2-deoxy-D-glucose (2DG) which inhibits the glycolytic pathway and Cpt1a inhibitor Etomoxir which inhibits FAO. AMPK activator AICAR with or without anti-IL10 mAb was also used to ameliorate metabolic stress and exhaustion faced by immune cells. Our results demonstrate that synergistic treatment with 2DG/Etomoxir + anti-IL10 mAb induced Tfh cell, memory B, and GC B cell response more potently compared to treatment with 2DG or Etomoxir treatment alone as observed in several LNs and tumor tissue of 4T1 mouse. However, AICAR + anti-IL10 mAb increased the frequency of intratumoral Tfh cells, simultaneously downregulated Tfr cells; and improved humoral response by stimulating upregulation of memory B, GC B, and plasmablasts in tumor-draining, axillary, and mesenteric LNs of 4T1 mouse.
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Affiliation(s)
- Poulomi Khamaru
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, West Bengal, India
| | - Sayan Chakraborty
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, West Bengal, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, West Bengal, India.
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Chakraborty S, Khamaru P, Bhattacharyya A. Regulation of immune cell metabolism in health and disease: Special focus on T and B cell subsets. Cell Biol Int 2022; 46:1729-1746. [PMID: 35900141 DOI: 10.1002/cbin.11867] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 10/30/2021] [Revised: 04/03/2022] [Accepted: 07/05/2022] [Indexed: 12/15/2022]
Abstract
Metabolism is a dynamic process and keeps changing from time to time according to the demand of a particular cell to meet its bio-energetic requirement. Different immune cells rely on distinct metabolic programs which allow the cell to balance its requirements for energy, molecular biosynthesis, and effector activity. In the aspect of infection and cancer immunology, effector T and B cells get exhausted and help tumor cells to evade immunosurveillance. On the other hand, T cells become hyperresponsive in the scenario of autoimmune diseases. In this article, we have explored the uniqueness and distinct metabolic features of key CD4+ T and B helper cell subsets, CD4+ T, B regulatory cell subsets and CD8+ T cells regarding health and disease. Th1 cells rely on glycolysis and glutaminolysis; inhibition of these metabolic pathways promotes Th1 cells in Treg population. However, Th2 cells are also dependent on glycolysis but an abundance of lactate within TME shifts their metabolic dependency to fatty acid metabolism. Th17 cells depend on HIF-1α mediated glycolysis, ablation of HIF-1α reduces Th17 cells but enhance Treg population. In contrast to effector T cells which are largely dependent on glycolysis for their differentiation and function, Treg cells mainly rely on FAO for their function. Therefore, it is of utmost importance to understand the metabolic fates of immune cells and how it facilitates their differentiation and function for different disease models. Targeting metabolic pathways to restore the functionality of immune cells in diseased conditions can lead to potent therapeutic measures.
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Affiliation(s)
- Sayan Chakraborty
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Poulomi Khamaru
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
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Mazumdar S, Ghosh AK, Purohit S, Das AK, Bhattacharyya A, Karmakar P. Immunomodulatory activity of ethanol extract of Annona reticulata L. leaf in cultured immune cells and in Swiss albino mice. J Ayurveda Integr Med 2022; 13:100554. [PMID: 35334452 PMCID: PMC8943405 DOI: 10.1016/j.jaim.2022.100554] [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: 01/18/2021] [Revised: 10/07/2021] [Accepted: 01/26/2022] [Indexed: 11/16/2022] Open
Abstract
Background Annona reticulata Linn, has been shown to possess antipyretic, antihelmintic, hypoglycemic, antiulcer and wound healing properties. However, its immunomodulatory role is yet to be explored. Objective(s) In the present study, we intended to investigate the effects of A. reticulata leaf ethanol extract on various components of the immune system. Material and methods The effects of A. reticulata leaf extract on human peripheral blood mononuclear cells, monocyte (THP1), and human macrophage (U937) cell lines were investigated. An animal study was conducted to observe the effect of the extract on humoral as well as cell mediated immunity. Results The extract stimulated proliferation of human PBMC, monocytes (THP1), and macrophages (U937) significantly in a dose dependent manner; expression of transforming growth factor-beta (TGF-β) increased in western blot analysis. Additionally, the extract treated macrophages exhibited features of activation under the microscope with a significant hike in the NO production. Flow cytometry of extract treated human PBMC revealed increased proliferation of lymphocytes (CD4, CD8 & B-cells) along with enhanced intracellular expression of IL-2, IL-6. Animal study data indicate a significant rise in the antibody titer as well as a strong delayed type hypersensitivity response in the extract (150 mg/kg and 300 mg/kg) treated mice; furthermore, the expression of IL-2 and IL-6 in mice PBMC was augmented. Conclusion The collective data evince the immunomodulatory potential of A. reticulata L. leaf. Annona reticulata L. stimulates proliferation of human PBMC, monocytes, and macrophages significantly. The extract activates cultured macrophages (U937). The extract enhanced lymphocyte proliferation along with expression of interleukins in human PBMC. Extract treated mice revealed a strong DTH response with significant rise in the antibody titer. The expression of IL-2 and IL-6 in mice PBMC was augmented in the treated group.
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Affiliation(s)
- Swagata Mazumdar
- Department of Life Science and Biotechnology, Jadavpur University, 188, Raja S.C. Mullick Road, Kolkata 700 032, West Bengal, India
| | - Amit K Ghosh
- Department of ENT & Head and Neck Surgery, Calcutta National Medical College, 32 Gorachand Road, Beniapukur, Kolkata 700014, West Bengal, India
| | - Suman Purohit
- Department of Zoology (Immunology Lab), University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700 019, West Bengal, India
| | - Anjan K Das
- Department of Pathology, Calcutta National Medical College, 32 Gorachand Road, Beniapukur, Kolkata 700014, West Bengal, India
| | - Arindam Bhattacharyya
- Department of Zoology (Immunology Lab), University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700 019, West Bengal, India
| | - Parimal Karmakar
- Department of Life Science and Biotechnology, Jadavpur University, 188, Raja S.C. Mullick Road, Kolkata 700 032, West Bengal, India.
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Bhattacharyya A, Sharma R, Mishra MK, Chamkha AJ, Mamatha E. Numerical and Statistical Analysis of Dissipative and Heat Absorbing Graphene Maxwell Nanofluid Flow Over a Stretching Sheet. j nanofluids 2021. [DOI: 10.1166/jon.2021.1808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This paper is basically devoted to carry out an investigation regarding the unsteady flow of dissipative and heat absorbing hydromagnetic graphene Maxwell nanofluid over a linearly stretched sheet taking momentum and thermal slip conditions into account. Ethylene glycol is selected
as a base fluid while graphene particles are considered as nanoparticles. The highly nonlinear mathematical model of the problem is converted into a set of nonlinear coupled differential equations by means of fitting similarity variables. Further, Runge-Kutta Fehlberg algorithms along with
the shooting scheme are instigated to analyse the numerical solution. The variations in graphene Maxwell nanofluid velocity and temperature owing to different physical parameters have been demonstrated via numerous graphs whereas Nusselt number and skin friction coefficients are illustrated
in numeric data form and are reported in different tables. In addition, a statistical method is implemented for multiple quadratic regression estimation analysis on the numerical figures of wall velocity gradient and local Nusselt number to establish the connection among heat transfer rate
and physical parameters. Our numerical findings reveal that the magnetic field, unsteadiness, inclination angle of magnetic field and porosity parameters boost the graphene Maxwell nanofluid velocity while Maxwell parameter has a reversal impact on it. The regression analysis confers that
Nusselt number is more prone to heat absorption parameter as compared to Eckert number. Finally, the numerical findings are compared with those of earlier published articles under restricted conditions to validate the numerical solution. The comparison of numerical findings shows an excellent
conformity among the results.
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Affiliation(s)
- A. Bhattacharyya
- Department of Mathematics, BMS Institute of Technology and Management, Bengaluru 560064, Karnataka, India
| | - R. Sharma
- Department of Mathematics, GITAM Bengaluru 562163, Karnataka, India
| | - M. K. Mishra
- Department of Mathematics, SAS, VIT - AP University, 522237, Andhra Pradesh, India
| | - Ali J. Chamkha
- Faculty of Engineering, Kuwait College of Science and Technology, Doha District, 35004, Kuwait
| | - E. Mamatha
- Department of Mathematics, GITAM Bengaluru 562163, Karnataka, India
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Bhattacharyya A, Ferreira PP, Panda K, Masunaga SH, de Faria LR, Correa LE, Santos FB, Adroja DT, Yokoyama K, Dorini TT, Jardim RF, Eleno LTF, Machado AJS. Electron-phonon superconductivity in C-doped topological nodal-line semimetal Zr 5Pt 3: a muon spin rotation and relaxation (μSR) study. J Phys Condens Matter 2021; 34:035602. [PMID: 34592722 DOI: 10.1088/1361-648x/ac2bc7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
In the present work, we demonstrate that C-doped Zr5Pt3is an electron-phonon superconductor (with critical temperatureTC= 3.8 K) with a nonsymmorphic topological Dirac nodal-line semimetal state, which we report here for the first time. The superconducting properties of Zr5Pt3C0.5have been investigated by means of magnetization, resistivity, specific heat, and muon spin rotation and relaxation (μSR) measurements. We find that at low temperatures, the depolarization rate is almost constant and it can be well described by a single-bands-wave model with a superconducting gap of 2Δ(0)/kBTC= 3.84, somewhat higher than the value of BCS theory. From the transverse field μSR analysis, we estimate the London penetration depthλL= 469 nm, superconducting carrier densityns= 1.83 × 1026 m-3, and effective massm* = 1.428me. The zero field μSR confirms the absence of any spontaneous magnetic field in the superconducting ground state. In order to gain additional insights into the electronic ground state of C-doped Zr5Pt3, we also performed first-principles calculations within the framework of density functional theory (DFT). The observed homogenous electronic character of the Fermi surface as well as the mutual decrease ofTCand density of states at the Fermi level are consistent with the experimental findings of this study. However, the band structure reveals the presence of robust, gapless fourfold-degenerate nodal lines protected by 63screw rotations and glide mirror planes. Therefore, Zr5Pt3represents a novel, unprecedented condensed matter system to investigate the intricate interplay between superconductivity and topology.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, India, Howrah 711202, West Bengal, India
| | - P P Ferreira
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - K Panda
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, India, Howrah 711202, West Bengal, India
| | - S H Masunaga
- Departamento de Física, Centro Universitário FEI, São Bernardo do Campo, Brazil
- Instituto de Física, Universidade de São Paulo, Rua do Matão, 1371, 05508-090, São Paulo, SP, Brazil
| | - L R de Faria
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - L E Correa
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - F B Santos
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - D T Adroja
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, Auckland Park 2006, South Africa
| | - K Yokoyama
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
| | - T T Dorini
- Université de Lorraine, CNRS, IJL, Nancy, France
| | - R F Jardim
- Instituto de Física, Universidade de São Paulo, Rua do Matão, 1371, 05508-090, São Paulo, SP, Brazil
| | - L T F Eleno
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - A J S Machado
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
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11
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Dey S, Chatterjee S, Patel A, Pradhan N, Srivastava D, Patra N, Bhattacharyya A, Manna D. Photoresponsive transformation from spherical to nanotubular assemblies: anticancer drug delivery using macrocyclic cationic gemini amphiphiles. Chem Commun (Camb) 2021; 57:4646-4649. [PMID: 33881081 DOI: 10.1039/d1cc01468d] [Citation(s) in RCA: 4] [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]
Abstract
We developed NIR-light-responsive macrocyclic cationic gemini amphiphiles, one of which displayed various favorable properties of lipids. The NIR-light-mediated cleavage of the strained dioxacycloundecine ring led to the conversion of the spherical to a nanotubular self-assembly in the aqueous medium. This photo-mediated transformation from the spherical to nanotubular self-assembly resulted in the release of encapsulated hydrophobic anticancer drug molecule doxorubicin (Dox) in a controlled manner. The potent cationic gemini amphiphile also displayed lower cytotoxicity and efficient NIR-light-mediated Dox release efficacy to cancerous cells.
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Affiliation(s)
- Subhasis Dey
- Indian Institute of Technology Guwahati, Chemistry, Guwahati, Assam, India.
| | | | - Anjali Patel
- Indian Institute of Technology Guwahati, Centre for the Environment, Guwahati, Assam, India
| | - Nirmalya Pradhan
- Indian Institute of Technology Guwahati, Chemistry, Guwahati, Assam, India.
| | - Diship Srivastava
- Indian Institute of Technology (Indian School of Mines) Dhanbad, Chemistry, Dhanbad, Jharkhand, India
| | - Niladri Patra
- Indian Institute of Technology (Indian School of Mines) Dhanbad, Chemistry, Dhanbad, Jharkhand, India
| | | | - Debasis Manna
- Indian Institute of Technology Guwahati, Chemistry, Guwahati, Assam, India. and Indian Institute of Technology Guwahati, Centre for the Environment, Guwahati, Assam, India
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12
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Gorbacheva AM, Uvarova AN, Ustiugova AS, Bhattacharyya A, Korneev KV, Kuprash DV, Mitkin NA. EGR1 and RXRA transcription factors link TGF-β pathway and CCL2 expression in triple negative breast cancer cells. Sci Rep 2021; 11:14120. [PMID: 34239022 PMCID: PMC8266896 DOI: 10.1038/s41598-021-93561-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 06/28/2021] [Indexed: 02/03/2023] Open
Abstract
Transforming growth factor beta (TGF-β) is the main cytokine responsible for the induction of the epithelial-mesenchymal transition of breast cancer cells, which is a hallmark of tumor transformation to the metastatic phenotype. Recently, research demonstrated that the chemokine CCL2 gene expression level directly correlates with the TGF-β activity in breast cancer patients. CCL2 attracts tumor-associated macrophages and is, therefore, considered as an important inductor of breast cancer progression; however, the precise mechanisms underlying its regulation by TGF-β are unknown. Here, we studied the behavior of the CCL2 gene in MDA-MB-231 and HCC1937 breast cancer cells representing mesenchymal-like phenotype activated by TGF-β. Using bioinformatics, deletion screening and point mutagenesis, we identified binding sites in the CCL2 promoter and candidate transcription factors responsible for its regulation by TGF-β. Among these factors, only the knock-down of EGR1 and RXRA made CCL2 promoter activity independent of TGF-β. These factors also demonstrated binding to the CCL2 promoter in a TGF-β-dependent manner in a chromatin immunoprecipitation assay, and point mutations in the EGR1 and RXRA binding sites totally abolished the effect of TGF-β. Our results highlight the key role of EGR1 and RXRA transcription factors in the regulation of CCL2 gene in response to TGF-β pathway.
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Affiliation(s)
- Alisa M Gorbacheva
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Aksinya N Uvarova
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Alina S Ustiugova
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, West Bengal, 700019, India
| | - Kirill V Korneev
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Dmitry V Kuprash
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia.,Biological Faculty, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Nikita A Mitkin
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia.
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13
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Chatterjee S, Chatterjee A, Jana S, Dey S, Roy H, Das MK, Alam J, Adhikary A, Chowdhury A, Biswas A, Manna D, Bhattacharyya A. Transforming growth factor beta orchestrates PD-L1 enrichment in tumor-derived exosomes and mediates CD8 T-cell dysfunction regulating early phosphorylation of TCR signalome in breast cancer. Carcinogenesis 2021; 42:38-47. [PMID: 32832992 DOI: 10.1093/carcin/bgaa092] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/16/2020] [Accepted: 08/14/2020] [Indexed: 02/06/2023] Open
Abstract
Tumor cells promote immune evasion through upregulation of programmed death-ligand 1 (PD-L1) that binds with programmed cell death protein 1 (PD1) on cytotoxic T cells and promote dysfunction. Though therapeutic efficacy of anti-PD1 antibody has remarkable effects on different type of cancers it is less effective in breast cancer (BC). Hence, more details understanding of PD-L1-mediated immune evasion is necessary. Here, we report BC cells secrete extracellular vesicles in form of exosomes carry PD-L1 and are highly immunosuppressive. Transforming growth factor beta (TGF-β) present in tumor microenvironment orchestrates BC cell secreted exosomal PD-L1 load. Circulating exosomal PD-L1 content is highly correlated with tumor TGF-β level. The later also found to be significantly associated with CD8+CD39+, CD8+PD1+ T-cell phenotype. Recombinant TGF-β1 dose dependently induces PD-L1 expression in Texos in vitro and blocking of TGF-β dimmed exosomal PD-L1 level. PD-L1 knocked down exosomes failed to suppress effector activity of activated CD8 T cells like tumor exosomes. While understanding its effect on T-cell receptor signaling, we found siPD-L1 exosomes failed to block phosphorylation of src family proteins, linker for activation of T cells and phosphoinositide phospholipase Cγ of CD8 T cells more than PD-L1 exosomes. In vivo inhibition of exosome release and TGF-β synergistically attenuates tumor burden by promoting Granzyme and interferon gamma release in tumor tissue depicting rejuvenation of exhausted T cells. Thus, we establish TGF-β as a promoter of exosomal PD-L1 and unveil a mechanism that tumor cells follow to promote CD8 T-cell dysfunction.
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Affiliation(s)
- Soumya Chatterjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Annesha Chatterjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Samir Jana
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Subhasis Dey
- Indian Institute of Technology Guwahati, Department of Chemistry, Guwahati, Assam, India
| | - Himansu Roy
- Department of Surgery, Medical College and Hospital, Kolkata, West Bengal, India
| | - Mrinal Kanti Das
- Department of Surgery, Medical College and Hospital, Kolkata, West Bengal, India
| | - Jahirul Alam
- Department of Surgery, Medical College and Hospital, Kolkata, West Bengal, India
| | - Anindya Adhikary
- Department of Pathology, Purulia Government Medical College & Hospital, Purulia, West Bengal, India
| | - Abhisek Chowdhury
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Anupam Biswas
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Debasis Manna
- Indian Institute of Technology Guwahati, Department of Chemistry, Guwahati, Assam, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
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14
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Shimura Y, Wörl A, Sundermann M, Tsuda S, Adroja DT, Bhattacharyya A, Strydom AM, Hillier AD, Pratt FL, Gloskovskii A, Severing A, Onimaru T, Gegenwart P, Takabatake T. Antiferromagnetic Correlations in Strongly Valence Fluctuating CeIrSn. Phys Rev Lett 2021; 126:217202. [PMID: 34114835 DOI: 10.1103/physrevlett.126.217202] [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: 10/08/2020] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
CeIrSn with a quasikagome Ce lattice in the hexagonal basal plane is a strongly valence fluctuating compound, as we confirm by hard x-ray photoelectron spectroscopy and inelastic neutron scattering, with a high Kondo temperature of T_{K}∼480 K. We report a negative in-plane thermal expansion α/T below 2 K, which passes through a broad minimum near 0.75 K. Volume and a-axis magnetostriction for B∥a are markedly negative at low fields and change sign before a sharp metamagnetic anomaly at 6 T. These behaviors are unexpected for Ce-based intermediate valence systems, which should feature positive expansivity. Rather they point towards antiferromagnetic correlations at very low temperatures. This is supported by muon spin relaxation measurements down to 0.1 K, which provide microscopic evidence for a broad distribution of internal magnetic fields. Comparison with isostructural CeRhSn suggests that these antiferromagnetic correlations emerging at T≪T_{K} result from geometrical frustration.
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Affiliation(s)
- Y Shimura
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - A Wörl
- Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - M Sundermann
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - S Tsuda
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - D T Adroja
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
| | - A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
| | - A M Strydom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
| | - A D Hillier
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX, United Kingdom
| | - F L Pratt
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX, United Kingdom
| | - A Gloskovskii
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - A Severing
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
| | - T Onimaru
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - P Gegenwart
- Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - T Takabatake
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
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15
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Singh SP, Bhattacharyya A, Mittal A, Pandey A, Tewari A, Latwal A, David B, Adhikari BS, Kumar D, Negi GCS, Mir IA, Tamta KK, Sambhav K, Shekhar M, Phulara M, Manzoor M, Singh N, Tewari P, Ranhotra PS, Singh P, Dhaila P, Sah P, Kumar R, Joshi R, Rawal RS, Rawal R, Singh RD, Shah S, Sharma S, Nanda SA, Gumber S, Singh U, Reshi Z. Indian Himalayan Timberline Ecotone in Response to Climate Change – Initial Findings. CURR SCI INDIA 2021. [DOI: 10.18520/cs/v120/i5/859-871] [Citation(s) in RCA: 1] [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]
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16
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Dalui S, Chatterjee S, Sinha P, Bhattacharyya A. Reduced Dpp expression accelerates inflammation-mediated neurodegeneration through activated glial cells during altered innate immune response in Drosophila. Pestic Biochem Physiol 2020; 170:104680. [PMID: 32980059 DOI: 10.1016/j.pestbp.2020.104680] [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: 09/18/2019] [Revised: 06/18/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
The progression of neurodegenerative disease is very complex biological process and the molecular crosstalk of inflammatory cytokines during neurodegeneration is associated with multiple cascade signalling. Few evidences suggest that environmental toxin, Paraquat (PQ) administration activates the microglia and intensify the release of proinflamatory cytokines during progression of Parkinson''s disease (PD) but the proper aetiology remained unknown. However, the fundamental role of anti-inflammatory molecule Decapentaplegic (Dpp), homologue of the secreted mammalian Transforming growth factor-β (TGF-β) signalling molecule during neurodegeneration of invertebrate fly model is yet to establish. To elucidate the molecular processes during early stage of Parkinson's disease, we observed neuro-toxin plays a determining role in the increased vulnerability to a particular PQ exposure that is attended by decreased lifespan, severe locomotor deficits, and more loss of dopaminergic (DA) neuron in PQ-treated Dpp deficient fly than wild type (WT). Simultaneously, activated microglia induced the inflammatory response with the release of pro-inflammatory and anti-inflammatory cytokine in Drosophila during neurodegeneration. Moreover, neuro-toxin exposure altered the expression of innate immune genes in both WT and mutant fly compared to the respective PQ-treated flies. Interestingly, PQ exposure reduced the expression of innate immune genes in mutant fly compared to WT. It may indicate that PQ exposure had broken down the immune defence response in mutant fly than WT whereas, without PQ exposure the innate immune tolerance level was higher in fly with reduced Dpp expression than WT. Thus, we observed the conserve anti-inflammatory factor TGF-β may exhibit a crucial defensive role during inflammation mediated neurodegeneration in invertebrate Drosophila melanogaster.
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Affiliation(s)
- Shauryabrota Dalui
- Immunology Lab, Department of Zoology, University of Calcutta, Kolkata, India.
| | - Soumya Chatterjee
- Immunology Lab, Department of Zoology, University of Calcutta, Kolkata, India.
| | - Priyobrata Sinha
- Immunology Lab, Department of Zoology, University of Calcutta, Kolkata, India.
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17
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Khan PN, Bhattacharyya A, Sharma JN, Manohar S. The recovery of strontium from acidic medium using novel strontium selective extractant: An experimental and DFT study. J Hazard Mater 2020; 397:122476. [PMID: 32416382 DOI: 10.1016/j.jhazmat.2020.122476] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 06/11/2023]
Abstract
In view of the limited solvent system known for the Sr2+ extraction from acidic media, extraction and recovery of 90Sr from acidic medium using novel Octabenzyloxyoctakis[[[(N,N-diethylamino)carbonyl)]methyl]oxy]calix[8]arene (BOC8A) extractant in nitro alkane medium are presented in this paper. BOC8A and nitro alkanes have been synthesized and characterized by 1H NMR, 13C NMR, FTIR and GC-MS techniques. Solvent composition of 0.01 M BOC8A in nitro octane (NO) has been optimized for substantial amount of extraction of strontium from feed acidity of 3.5-4 M nitric acid, (D3.5-4 M HNO3 = 7.1-7.8). Poor extraction of Pu4+, Ba2+, Na+ and UO22+ and negligible extraction of Am3+, Cs+, Ru3+, Nd3+, Zr2+ and trivalent lanthanides are observed. Ion dissociation mechanism was found to be operative involving an extractable complex having Sr2+, BOC8A and HNO3 in a ratio of 1:1:2. About 99 % of Sr2+ from the loaded solvent was recovered with 0.01 M HNO3. DFT calculations were used to predict the structures of free, protonated BOC8A and its complex with Sr2+. DFT result showed reorientation in conformation of BOC8A due to protonation resulting in the Sr2+ extraction from acidic medium with significantly high interaction energy between Sr2+ and diprotonated form of BOC8A.
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Affiliation(s)
- Pasupati Nath Khan
- Nuclear Recycle Group, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - A Bhattacharyya
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India; Radio Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
| | - J N Sharma
- G&AMD, Materials Group, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S Manohar
- Nuclear Recycle Group, Bhabha Atomic Research Centre, Mumbai 400085, India
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18
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Sengupta A, Mukherjee S, Ghosh S, Keswani T, Sarkar S, Majumdar G, Das M, Bhattacharyya A. Partial impairment of late-stage autophagic flux in murine splenocytes leads to sqstm1/p62 mediated nrf2-keap1 antioxidant pathway activation and induced proteasome-mediated degradation in malaria. Microb Pathog 2020; 147:104289. [PMID: 32693118 DOI: 10.1016/j.micpath.2020.104289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 01/11/2020] [Revised: 04/29/2020] [Accepted: 05/26/2020] [Indexed: 01/15/2023]
Abstract
Splenomegaly, a major symptom in Plasmodium infection, is extensively studied for its immunopathological role in mice malaria model infected with Plasmodium berghei ANKA. The status of autophagic regulation in hosts in malaria pathogenesis remains unreported till date. This study demonstrated the autophagy, proteasomal degradation and NRF2-KEAP1 antioxidant pathway status in the host during Plasmodium infection taking murine spleen as our organ of interest. Initial staining and autophagic gene expression indicate a possibility of autophagic pathway activation. Although the conversion of LC3A to LC3B and lysosome-autophagosome fusion increases, the final degradation step remains incomplete. Resultant upregulation of p62 and its altered phosphorylated status enhances its binding to keap1 causing NRF2 translocation to the nucleus. NRF2 act as transcription factor upregulating p62 level itself leading to an autoinduction loop of p62 expression. Interestingly, enhancement of P62 interaction with proteasome subunit RPT1 indicates a possible role in transporting ubiquitinated cargo to proteasome complex. Ubiquitination level increased with subsequent upregulation of all three modes of proteasomal degradation i.e trypsin-like, caspase-like and especially chymotrypsin-like. Sqstm1/p62 plays a critical central role in regulating autophagy, proteasomal degradation, and NRF2-KEAP1 pathway. The incomplete autophagic flux in the final step may be a key therapeutic target, as autophagic degradation and subsequent pathogenic peptide presentation is of utmost necessity for downstream immune response.
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Affiliation(s)
- Anirban Sengupta
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
| | - Saikat Mukherjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
| | - Soubhik Ghosh
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
| | - Tarun Keswani
- Department of Medicine and Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA.
| | - Samrat Sarkar
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
| | - Gargi Majumdar
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
| | - Madhusudan Das
- Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
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19
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Akhtar N, Pradhan N, Barik GK, Chatterjee S, Ghosh S, Saha A, Satpati P, Bhattacharyya A, Santra MK, Manna D. Quinine-Based Semisynthetic Ion Transporters with Potential Antiproliferative Activities. ACS Appl Mater Interfaces 2020; 12:25521-25533. [PMID: 32425038 DOI: 10.1021/acsami.0c01259] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Synthetic ion transporters have attracted tremendous attention for their therapeutic potential against various ion-transport-related diseases, including cancer. Inspired by the structure and biological activities of natural products, we synthesized a small series of squaramide and thiourea derivatives of quinine and investigated their ion transport activities. The involvement of a quinuclidine moiety for the cooperative interactions of Cl- and H+ ions with the thiourea or squaramide moiety resulted in an effectual transport of these ions across membranes. The interference of ionic equilibrium by the potent Cl- ion carrier selectively induced cancer cell death by endorsing caspase-arbitrated apoptosis. In vivo assessment of the potent ionophore showed an efficient reduction in tumor growth with negligible immunotoxicity to other organs.
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Affiliation(s)
- Nasim Akhtar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Nirmalya Pradhan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | | | - Soumya Chatterjee
- Department of Zoology, University of Calcutta, Kolkata, West Bengal 700019, India
| | - Suvankar Ghosh
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Abhishek Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Priyadarshi Satpati
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | | | | | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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20
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Abstract
In 2008, the US Food and Drug Administration provided guidance for the evaluation of the cardiovascular safety of antidiabetes drugs. The newer antidiabetes drugs, approved after 2008, were therefore evaluated in long-term cardiovascular outcome trials, designed and powered for the assessment of cardiovascular safety. Accordingly, the primary endpoint of these trials was a cardiac composite endpoint. Since 2008, the data from various cardiovascular outcome trials have been reported, including SAVOR-TIMI 53 (saxagliptin), EXAMINE (alogliptin), TECOS (sitagliptin), CARMELINA (linagliptin), CAROLINA (linagliptin), ELIXA (lixisenatide), LEADER (liraglutide), EXSCEL (exenatide once-weekly), SUSTAIN-6 (injectable semaglutide), HARMONY Outcomes (albiglutide), REWIND (dulaglutide), PIONEER-6 (oral semaglutide), EMPA-REG OUTCOME (empagliflozin), the CANVAS Program (canagliflozin) and DECLARE-TIMI 53 (dapagliflozin). Some of these trials subsequently also published data on renal outcomes, although these were secondary or exploratory analyses. Dipeptidyl peptidase-4 inhibitors and glucagon-like peptide-1 receptor agonists had beneficial effects on albuminuria, while sodium-glucose co-transporter-2 inhibitors additionally showed a positive effect on 'hard' renal outcomes. In contrast to the cardiovascular outcome trials, the renal outcome trial of canagliflozin, CREDENCE, assessed a hard renal endpoint as its primary endpoint and showed positive effects on these hard renal outcomes. In this review, we aim to highlight the renal outcome data from the cardiovascular outcome trials and the CREDENCE trial and understand the differences between their results. The post CREDENCE era would appear to reinforce the position of sodium-glucose co-transporter-2 inhibitors as drugs providing cardiorenal protection, in addition to their anti-glycaemic effects.
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Affiliation(s)
- A Rajani
- Janssen India Medical Affairs, Johnson & Johnson Private Ltd, Mumbai, India
| | - M Sahay
- Department of Nephrology, Osmania Medical College, Hyderabad, India
| | - A Bhattacharyya
- Department of Diabetes and Endocrinology, Manipal Hospital, Bengaluru, India
| | - A Amar
- Janssen India Medical Affairs, Johnson & Johnson Private Ltd, Mumbai, India
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21
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Bhattacharyya A, Panda K, Adroja DT, Kase N, Biswas PK, Saha S, Das T, Lees MR, Hillier AD. Investigation of superconducting gap structure in HfIrSi using muon spin relaxation/rotation. J Phys Condens Matter 2020; 32:085601. [PMID: 31689696 DOI: 10.1088/1361-648x/ab549e] [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] [Indexed: 06/10/2023]
Abstract
We have investigated the superconducting state of HfIrSi using magnetization, specific heat, muon spin rotation and relaxation ([Formula: see text]SR) measurements. Superconductivity was observed at [Formula: see text] K in both specific heat and magnetization measurements. From an analysis of the transverse-field [Formula: see text]SR data, it is clear that the temperature variation of superfluid density is well fitted by an isotropic Bardeen-Cooper-Schrieffer (BCS) type s-wave gap structure. The superconducting carrier density [Formula: see text] m-3, the magnetic penetration depth, [Formula: see text] nm, and the effective mass, [Formula: see text], were calculated from the TF-[Formula: see text]SR data. Zero-field [Formula: see text]SR data for HfIrSi reveal the absence of any spontaneous magnetic moments below [Formula: see text], indicating that time-reversal symmetry (TRS) is preserved in the superconducting state of HfIrSi. Theoretical investigations suggest that the Hf and Ir atoms hybridize strongly along the c-axis, and that this is responsible for the strong three-dimensionality of this system which screens the Coulomb interaction. As a result, despite the presence of d-electrons in HfIrSi, these correlation effects are weakened, making the electron-phonon coupling more important.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, West Bengal, India
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Bhattacharyya A, Adroja DT, Biswas PK, Sato YJ, Lees MR, Aoki D, Hillier AD. Ir 5d-band derived superconductivity in LaIr 3. J Phys Condens Matter 2020; 32:065602. [PMID: 31509814 DOI: 10.1088/1361-648x/ab4389] [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] [Indexed: 06/10/2023]
Abstract
The superconducting properties of rhombohedral LaIr3 were examined using susceptibility, resistivity, heat capacity, and zero-field (ZF) and transverse-field (TF) muon spin relaxation and rotation ([Formula: see text]SR) measurements. The susceptibility and resistivity measurements confirm a superconducting transition below [Formula: see text] K. Two successive transitions are observed in the heat capacity data, one at [Formula: see text] K and a second at 1.2 K below [Formula: see text]. The heat capacity jump is [Formula: see text], which is lower than 1.43 expected for Bardeen-Cooper-Schrieffer (BCS) weak-coupling limit. TF-[Formula: see text]SR measurements reveal a fully gapped s-wave superconductivity with [Formula: see text], which is small compared to the BCS value of 3.56, suggesting weak-coupling superconductivity. The magnetic penetration depth, [Formula: see text], estimated from TF-[Formula: see text]SR gives [Formula: see text] nm, a superconducting carrier density [Formula: see text] carriers m-3 and a carrier effective-mass enhancement factor [Formula: see text]. ZF-[Formula: see text]SR data show no evidence for any spontaneous magnetic fields below [Formula: see text], which demonstrates that time-reversal symmetry is preserved in the superconducting state of LaIr3.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
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Bhattacharyya A, Das SL, Basu DA. Evaluation of Risk Factors of Peripheral Neuropathy in Type 2 Diabetes Mellitus Patients with Special Reference to Vitamin B12 Defi ciency. J Assoc Physicians India 2020; 68:52. [PMID: 31979580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
| | - S L Das
- Assam Medical College and Hospital
| | - D A Basu
- Assam Medical College and Hospital
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Sinha P, Chakrabarti N, Ghosh N, Mitra S, Dalui S, Bhattacharyya A. Alterations of thyroidal status in brain regions and hypothalamo-pituitary-blood-thyroid-axis associated with dopaminergic depletion in substantia nigra and ROS formation in different brain regions after MPTP treatment in adult male mice. Brain Res Bull 2020; 156:131-140. [PMID: 31891753 DOI: 10.1016/j.brainresbull.2019.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 09/27/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 12/20/2022]
Abstract
MPTP produces oxidative stress, damages niagrostriatal dopaminergic neurons and develops Parkinsonism in rodents. Due to paucity of information, the thyroidal status in brain regions and peripheral tissues during different post-treatment days in MPTP-induced mice had been executed in the present study. MPTP depleted tyrosine hydroxylase protein expressions that signify the dopaminergic neuronal damage in substantia nigra. MPTP elevated ROS formation differentially in brain regions (cerebral cortex, hippocampus, substantia nigra) with maximal elevation at hippocampus. The changes in thyroid hormone (T4 and T3) levels indicate that brain regions might combat the adverse situation by keeping the levels of thyroid hormones either unchanged or in the elevated conditions in the latter phases (day-3 and day-7), apart from the depletion of thyroid hormones in certain brain regions (T4 in SN and hippocampus, T3 in hippocampus) as the immediate (day-1) effects after MPTP treatment. MPTP caused alterations of cellular morphology, RNA:Protein ratio and TPO protein expression, concomitantly depleted TPO mRNA expression and elevated TSH levels in the thyroid gland. Although T4 levels changed differentially, T3 levels remained unaltered in thyroid gland throughout the post-treatment days. Results have been discussed mentioning the putative role of T4 and TSH in apoptosis and/or proliferation/differentiation of thyrocytes. In blood, T4 levels remained unchanged while the changes in T3 and TSH levels did not signify the clinical feature of hypo/hyperthyroidism of animals. In the pituitary, both T4 and T3 levels remained elevated where TSH differentially altered (elevated followed by depletion) during post-treatment days. Notably, T4, T3 and TSH levels did not alter in hypothalamus except initial (day-1) depletion of the T4 level. Therefore, the feedback control mechanism of hypothalamo-pituitary-blood-thyroid-axis failed to occur after MPTP treatment. Overall, MPTP altered thyroidal status in the brain and peripheral tissues while both events might occur in isolation as well.
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Affiliation(s)
- Priyobrata Sinha
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India; Department of Physiology, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Nilkanta Chakrabarti
- Department of Physiology, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata 700009, India; Centres with Potential for Excellence in Particular Areas (CPEPA, UGC), Centre for "Electrophysiology & Neuroimaging Studies Including Mathematical Modeling" India.
| | - Nabanita Ghosh
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Soham Mitra
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Shauryabrota Dalui
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Arindam Bhattacharyya
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India.
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25
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Panda S, Pradhan N, Chatterjee S, Morla S, Saha A, Roy A, Kumar S, Bhattacharyya A, Manna D. 4,5-Disubstituted 1,2,3-triazoles: Effective Inhibition of Indoleamine 2,3-Dioxygenase 1 Enzyme Regulates T cell Activity and Mitigates Tumor Growth. Sci Rep 2019; 9:18455. [PMID: 31804586 PMCID: PMC6895048 DOI: 10.1038/s41598-019-54963-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 05/31/2019] [Accepted: 11/21/2019] [Indexed: 01/29/2023] Open
Abstract
The improvement of body's own immune system is considered one of the safest approaches to fight against cancer and several other diseases. Excessive catabolism of the essential amino acid, L-tryptophan (L-Trp) assists the cancer cells to escape normal immune obliteration. The formation of disproportionate kynurenine and other downstream metabolites suppress the T cell functions. Blocking of this immunosuppressive mechanism is considered as a promising approach against cancer, neurological disorders, autoimmunity, and other immune-mediated diseases. Overexpression of indoleamine 2,3-dioxygenase 1 (IDO1) enzyme is directly related to the induction of immunosuppressive mechanisms and represents an important therapeutic target. Several classes of small molecule-based IDO1 inhibitors have been already reported, but only few compounds are currently being evaluated in various stages of clinical trials as adjuvants or in combination with chemo- and radiotherapies. In the quest for novel structural class(s) of IDO1 inhibitors, we developed a series of 4,5-disubstituted 1,2,3-triazole derivatives. The optimization of 4,5-disubstituted 1,2,3-triazole scaffold and comprehensive biochemical and biophysical studies led to the identification of compounds, 3i, 4i, and 4k as potent and selective inhibitors of IDO1 enzyme with IC50 values at a low nanomolar level. These potent compounds also showed strong IDO1 inhibitory activities in MDA-MB-231 cells with no/negligible level of cytotoxicity. The T cell activity studies revealed that controlled regulation of IDO1 enzyme activity in the presence of these potent compounds could induce immune response against breast cancer cells. The compounds also showed excellent in vivo antitumor efficacy (of tumor growth inhibition = 79-96%) in the female Swiss albino mice. As a consequence, this study describes the first example of 4,5-disubstituted 1,2,3-triazole based IDO1 inhibitors with potential applications for immunotherapeutic studies.
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MESH Headings
- Animals
- Antineoplastic Agents, Immunological/chemistry
- Antineoplastic Agents, Immunological/pharmacology
- Antineoplastic Agents, Immunological/therapeutic use
- Breast Neoplasms/drug therapy
- Breast Neoplasms/immunology
- Breast Neoplasms/pathology
- Carcinoma, Ehrlich Tumor/drug therapy
- Carcinoma, Ehrlich Tumor/immunology
- Carcinoma, Ehrlich Tumor/pathology
- Cell Line, Tumor
- Drug Screening Assays, Antitumor
- Enzyme Assays
- Female
- HEK293 Cells
- Humans
- Indoleamine-Pyrrole 2,3,-Dioxygenase/antagonists & inhibitors
- Indoleamine-Pyrrole 2,3,-Dioxygenase/metabolism
- Inhibitory Concentration 50
- Kynurenine/immunology
- Kynurenine/metabolism
- Metabolic Networks and Pathways/drug effects
- Metabolic Networks and Pathways/immunology
- Mice
- Molecular Docking Simulation
- Primary Cell Culture
- Recombinant Proteins/chemistry
- Recombinant Proteins/metabolism
- T-Lymphocytes, Cytotoxic/drug effects
- T-Lymphocytes, Cytotoxic/immunology
- Triazoles/chemistry
- Triazoles/pharmacology
- Triazoles/therapeutic use
- Tryptophan/immunology
- Tryptophan/metabolism
- Tryptophan Oxygenase/antagonists & inhibitors
- Tryptophan Oxygenase/chemistry
- Tryptophan Oxygenase/metabolism
- Tumor Escape/drug effects
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Affiliation(s)
- Subhankar Panda
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Nirmalya Pradhan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Soumya Chatterjee
- Department of Zoology, University of Calcutta, Kolkata, 700019, West Bengal, India
| | - Sudhir Morla
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Abhishek Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Ashalata Roy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Sachin Kumar
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | | | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
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Biswas S, Mandal G, Roy Chowdhury S, Purohit S, Payne KK, Anadon C, Gupta A, Swanson P, Yu X, Conejo-Garcia JR, Bhattacharyya A. Exosomes Produced by Mesenchymal Stem Cells Drive Differentiation of Myeloid Cells into Immunosuppressive M2-Polarized Macrophages in Breast Cancer. J Immunol 2019; 203:3447-3460. [PMID: 31704881 DOI: 10.4049/jimmunol.1900692] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/04/2019] [Indexed: 12/25/2022]
Abstract
Tumor-associated macrophages are major contributors to malignant progression and resistance to immunotherapy, but the mechanisms governing their differentiation from immature myeloid precursors remain incompletely understood. In this study, we demonstrate that exosomes secreted by human and mouse tumor-educated mesenchymal stem cells (MSCs) drive accelerated breast cancer progression by inducing differentiation of monocytic myeloid-derived suppressor cells into highly immunosuppressive M2-polarized macrophages at tumor beds. Mechanistically, MSC-derived exosomes but not exosomes from tumor cells contain TGF-β, C1q, and semaphorins, which promote myeloid tolerogenic activity by driving PD-L1 overexpression in both immature myelomonocytic precursors and committed CD206+ macrophages and by inducing differentiation of MHC class II+ macrophages with enhanced l-Arginase activity and IL-10 secretion at tumor beds. Accordingly, administration of tumor-associated murine MSC-derived exosomes accelerates tumor growth by dampening antitumor immunity, and macrophage depletion eliminates exosome-dependent differences in malignant progression. Our results unveil a new role for MSC-derived exosomes in the differentiation of myeloid-derived suppressor cells into macrophages, which governs malignant growth.
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Affiliation(s)
- Subir Biswas
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India.,Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Gunjan Mandal
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India.,Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Sougata Roy Chowdhury
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Suman Purohit
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Kyle K Payne
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Carmen Anadon
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - Arnab Gupta
- Department of Surgery, Saroj Gupta Cancer Centre and Research Institute, Kolkata 700063, India
| | - Patricia Swanson
- Helen F. Graham Cancer Center, Christiana Care Health System, Newark, DE 19713; and
| | - Xiaoqing Yu
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612
| | - José R Conejo-Garcia
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612;
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India;
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Chatterjee A, Jana S, Chatterjee S, Wastall LM, Mandal G, Nargis N, Roy H, Hughes TA, Bhattacharyya A. MicroRNA-222 reprogrammed cancer-associated fibroblasts enhance growth and metastasis of breast cancer. Br J Cancer 2019; 121:679-689. [PMID: 31481734 PMCID: PMC6889135 DOI: 10.1038/s41416-019-0566-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [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: 03/31/2019] [Revised: 07/25/2019] [Accepted: 08/15/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Cancer-associated fibroblasts (CAFs) are known to impact on tumour behaviour, but the mechanisms controlling this are poorly understood. METHODS Breast normal fibroblasts (NFs) or CAFs were isolated from cancers by laser microdissection or were cultured. Fibroblasts were transfected to manipulate miR-222 or Lamin B receptor (LBR). The fibroblast-conditioned medium was collected and used to treat epithelial BC lines MDA-MB-231 and MDA-MB-157. Migration, invasion, proliferation or senescence was assessed using transwell, MTT or X-gal assays, respectively. RESULTS MiR-222 was upregulated in CAFs as compared with NFs. Ectopic miR-222 expression in NFs induced CAF-like expression profiles, while miR-222 knockdown in CAFs inhibited CAF phenotypes. LBR was identified as a direct miR-222 target, and was functionally relevant since LBR knockdown phenocopied miR-222 overexpression and LBR overexpression phenocopied miR-222 knockdown. MiR-222 overexpression, or LBR knockdown, was sufficient to induce NFs to show the CAF characteristics of enhanced migration, invasion and senescence, and furthermore, the conditioned medium from these fibroblasts induced increased BC cell migration and invasion. The reverse manipulations in CAFs inhibited these behaviours in fibroblasts, and inhibited paracrine influences on BC cells. CONCLUSION MiR-222/LBR have key roles in controlling pro-progression influences of CAFs in BC. This pathway may present therapeutic opportunities to inhibit CAF-induced cancer progression.
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Affiliation(s)
- Annesha Chatterjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Samir Jana
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Soumya Chatterjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Laura M Wastall
- Department of Cellular Pathology, St James's University Hospital, Leeds, UK
| | - Gunjan Mandal
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Nelofar Nargis
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India
| | - Himansu Roy
- Department of Surgery, Medical College, Kolkata, West Bengal, India
| | | | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata, West Bengal, India.
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Das S, Biswas S, Chaudhuri S, Bhattacharyya A, Das B. A Nuclear Zip Code in SKS1 mRNA Promotes Its Slow Export, Nuclear Retention, and Degradation by the Nuclear Exosome/DRN in Saccharomyces cerevisiae. J Mol Biol 2019; 431:3626-3646. [DOI: 10.1016/j.jmb.2019.07.005] [Citation(s) in RCA: 6] [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: 04/06/2019] [Revised: 06/26/2019] [Accepted: 07/01/2019] [Indexed: 01/12/2023]
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Sengupta A, Keswani T, Sarkar S, Ghosh S, Mukherjee S, Bhattacharyya A. Autophagic induction modulates splenic plasmacytoid dendritic cell mediated immune response in cerebral malarial infection model. Microbes Infect 2019; 21:475-484. [PMID: 31185303 DOI: 10.1016/j.micinf.2019.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 12/12/2018] [Revised: 05/16/2019] [Accepted: 05/28/2019] [Indexed: 02/06/2023]
Abstract
Splenic plasmacytoid dendritic cells (pDC) possess the capability to harbor live replicative Plasmodium parasite. Isolated splenic pDC from infected mice causes malaria when transferred to naïve mice. Incomplete autophagic degradation might cause poor antigen processing and poor immune response. Induction of autophagic flux by rapamycin treatment led to better prognosis by boosting pDC centered immune response against the pathogen. Splenic pDC from rapamycin-treated infected mice, caused less parasitemia in naïve mice. The downregulation of adhesion with unaltered phagocytic potential of the cells post autophagic induction restricted excessive parasite burden within them. Rapamycin-treated pDC played a better role in antigen presentation. They showed higher expression of co-stimulatory molecules CD80, CD86, DEC205, MHCI. Rapamycin-treated pDC induced CD28 expression on CD8+ T cells and suppressed FasL level. This cells also influenced differentiation of effector, memory T cell population. The increase in IL10: TNFα ratio, Treg: Th17 ratio and lowering of myeloid DC: plasmacytoid DC ratio was observed. It shifted the overaggressive inflammation mediated Th1 pathway that is reported to incur host damage, to a better well-balanced cytokine profile exhibiting Th2 pathway. Autophagic flux induction within pDC proved to be beneficial in combating malarial pathogenicity.
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Affiliation(s)
- Anirban Sengupta
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
| | - Tarun Keswani
- Basic and Clinical Immunology of Parasitic Diseases, Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre of Infection and Immunity Lille, F-59000 Lille, France, 1 Rue du Professeur Calmette, 59019, Lille, France.
| | - Samrat Sarkar
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
| | - Soubhik Ghosh
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
| | - Saikat Mukherjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
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BISWAS SUBIR, Mandal G, Chowdhury SR, Purohit S, Payne KK, Galindo CMA, Gupta A, Yu X, Conejo-Garcia JR, Bhattacharyya A. Mesenchymal stem cells educate breast tumor associated macrophages to acquire increased immunosuppressive features. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.135.25] [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] [Indexed: 01/02/2023]
Abstract
Abstract
Breast cancer metastasis is known to be extensively promoted by immunosuppression. Here we describe a novel mechanism by which mesenchymal stem cell (MSC)-derived exosomes drive an immunosuppressive program within the breast tumor microenvironment. Initial q-PCR and immunophenotyping of human breast tumor samples, and TCGA data analysis confirmed a positive correlation between infiltrations of MSC and M2 macrophage phenotype, therefore we hypothesized that MSC promote M2 macrophage differentiation in breast tumors. We then performed a series of experiments in vitro and in vivo, and found that MSC-derived exosomes significantly promote differentiation of macrophages into PD-L1 expressing ‘M2-like’ phenotype, while also enhancing malignant progression of breast tumors, in vivo. Additionally, we observed increased invasive potential of tumor cells with higher expression of mesenchymal markers when induced with MSC-derived exosomes. Importantly, our observation of a significantly higher TGF-β production by tumor associated macrophages in exosome-induced tumors, with stronger PD-1 expression by intra-tumoral T cells, suggests TGF-β driven PD-1 upregulation. Blocking of PD-L1 abrogates exosome-induced tumor growth signifying the PD-L1/PD-1 checkpoint pathway is vital to MSC-induced tumor progression. Together, infiltration of MSCs within breast tumors drives the increased invasive potential as well as immune-checkpoint-mediated immunosuppression through inducing PD-L1 expression by tumor associated macrophages and PD-1 expression by T cells. Targeting infiltration of MSCs into the breast tumor therefore is a potential approach to reduce breast tumor metastases and improve efficacy of immunotherapies.
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Affiliation(s)
- SUBIR BISWAS
- 1Moffitt Cancer Center and Research Institute
- 2University of Calcutta, India
| | | | | | | | | | | | - Arnab Gupta
- 3Saroj Gupta Cancer Centre and Research Institute, India
| | - Xiaoqing Yu
- 1Moffitt Cancer Center and Research Institute
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Indra A, Dey K, Bhattacharyya A, Berlie A, Giri S. Unveiling spin-glass transition and antiferromagnetic order by μSR studies in spin-chain Sm 2BaNiO 5. J Phys Condens Matter 2019; 31:165801. [PMID: 30681979 DOI: 10.1088/1361-648x/ab01e6] [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] [Indexed: 06/09/2023]
Abstract
We report the zero-field and longitudinal field muon spin relaxation studies in a spin-chain compound Sm2BaNiO5. Two magnetic transitions, that have not been previously detected by the heat capacity and magnetization measurements, are confirmed at 46 and 9 K. The antiferromagnetic order is suggested at 46 K. Analysis of the muon spin polarization unveils the spin-glass transition at 9 K. Time-field scaling relation of the muon spin polarization verifies the spin-spin autocorrelation function following the cut-off power law, which is approximated by the Ogielski form, as employed numerically for characterizing the spin-glasses.
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Affiliation(s)
- A Indra
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India. Department of Physics, Srikrishna College, Bagula, Nadia, W. B., 741502, India
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Bhattacharyya A, Adroja DT, Panda K, Saha S, Das T, Machado AJS, Cigarroa OV, Grant TW, Fisk Z, Hillier AD, Manfrinetti P. Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric ThCoC_{2}. Phys Rev Lett 2019; 122:147001. [PMID: 31050469 DOI: 10.1103/physrevlett.122.147001] [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: 10/14/2018] [Revised: 01/14/2019] [Indexed: 06/09/2023]
Abstract
The newly discovered noncentrosymmetric superconductor ThCoC_{2} exhibits numerous types of unconventional behavior in the field dependent heat capacity data. Here we present the first measurement of the gap symmetry of ThCoC_{2} by muon spin rotation and relaxation (μSR) measurements. The temperature dependence of the magnetic penetration depth measured using the transverse field μSR experiment reveals the evidence of a nodal pairing symmetry. To understand this finding, we carry out calculations of the superconducting pairing eigenvalue and eigenfunction (pairing symmetry) due to the spin-fluctuation mechanism by directly implementing the ab initio band structures. We find that the system possesses a single Fermi surface with considerable three dimensionality and a strong nesting along the k_{z} direction. Such nesting promotes a superconducting state with a cosk_{z}-like pairing symmetry with a prominent nodal line on the k_{z}=±π/2 plane. The result agrees well with the experimental data.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon, OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
| | - D T Adroja
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon, OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
| | - K Panda
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
| | - Surabhi Saha
- Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Tanmoy Das
- Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - A J S Machado
- Escola de Engenharia de Lorena, Universidade de São Paulo, P. O. Box 116, Lorena, São Paulo, 12602810
| | - O V Cigarroa
- Escola de Engenharia de Lorena, Universidade de São Paulo, P. O. Box 116, Lorena, São Paulo, 12602810
- Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA
| | - T W Grant
- Escola de Engenharia de Lorena, Universidade de São Paulo, P. O. Box 116, Lorena, São Paulo, 12602810
- Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA
| | - Z Fisk
- Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA
| | - A D Hillier
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon, OX11 0QX, United Kingdom
| | - P Manfrinetti
- Department of Chemistry, University of Genova, 16146 Genova, Italy
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Sengupta A, Sarkar S, Keswani T, Mukherjee S, Ghosh S, Bhattacharyya A. Impact of autophagic regulation on splenic red pulp macrophages during cerebral malarial infection. Parasitol Int 2019; 71:18-26. [PMID: 30872003 DOI: 10.1016/j.parint.2019.03.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 11/05/2018] [Revised: 03/08/2019] [Accepted: 03/08/2019] [Indexed: 12/18/2022]
Abstract
Splenic red pulp macrophages play a critical role infiltration of infected RBC and elimination of pathogens during malarial infection. However, the efficiency of pathogenic processing and the intricate pathway followed by them to boost the downstream immune response has not been studied in details. We checked the status of autophagic regulation within the cells both before and after the infection and also modulated the autophagic flux with either its inducer or inhibitor. We found that the upregulation of autophagic gene and the corresponding pathway is correlated with better parasite clearance and survivability, with an enhanced downstream immune response. It also increases their phagocytic potential with better Lysosomal associated protein I and II synthesis. The autophagolysosome formation increases as well, and more vacuole bound LC3B protein are detected. Chemokine synthesized from Red Pulp macrophage helps in mediating the induction for recruiting neutrophil and CD4 + T cells to the splenic red pulp region. The skewing of M1 macrophage polarity is observed post autophagic induction with a better costimulatory molecule like CD80, CD86 expression and antigen presenting molecule MHC I, MHC II is observed. This study shows the possibility of an alternative or adjuvant therapy regimen for the malarial patient by inducing the autophagic pathway that targets the red pulp macrophages. This might be helpful for better pathogen degradation and processing. The subsequent clearance of parasite will result in a better outcome for the patients.
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Affiliation(s)
- Anirban Sengupta
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Samrat Sarkar
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Tarun Keswani
- Basic and Clinical Immunology of Parasitic Diseases, Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019, UMR 8204, CIIL - Centre of Infection and Immunity Lille, F-59000 Lille, 1 rue du Professeur Calmette, 59019 Lille, France
| | - Saikat Mukherjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Soubhik Ghosh
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India.
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Bhattacharyya A, Ansari SA, Prabhu DR, Kumar D, Mohapatra PK. Highly efficient separation of Am3+ and Eu3+ using an aqueous soluble sulfonated BTP derivative by hollow-fiber supported liquid membrane containing TODGA. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1578803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- A. Bhattacharyya
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - S. A. Ansari
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - D. R. Prabhu
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Dheeraj Kumar
- Radiopharmaceuticals Program (RPhP) Group, Board of Radiation and Isotope Technology, Vashi, Navi-Mumbai, India
| | - P. K. Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
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Chakraborty K, Dey A, Bhattacharyya A, Dasgupta SC. Anti-fibrotic effect of black tea (Camellia sinensis) extract in experimental pulmonary fibrosis. Tissue Cell 2019; 56:14-22. [DOI: 10.1016/j.tice.2018.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 11/27/2018] [Accepted: 11/28/2018] [Indexed: 12/17/2022]
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Rawat N, Kar A, Bhattacharyya A, Yadav AK, Bhattacharyya D, Jha SN, Kumar P, Nayak SK, Tomar BS. Complexation of U(VI) with Cucurbit[5]uril: Thermodynamic and Structural investigation in aqueous medium. Spectrochim Acta A Mol Biomol Spectrosc 2019; 207:354-362. [PMID: 30292112 DOI: 10.1016/j.saa.2018.09.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/17/2018] [Accepted: 09/18/2018] [Indexed: 06/08/2023]
Abstract
The assessment of cucurbituril (CBn) for selective removal of actinides from nuclear waste streams requires comprehensive understanding of binding parameters and coordination of these complexes. The present work is the first experimental report on complexation of actinide ion with Cucurbit[5]uril (CB5) in solution. The thermodynamic parameters (ΔG, ΔH and ΔS) for complexation of CB5 with U(VI) in formic acid water medium were determined using microcalorimetry and UV-Vis spectroscopy. The enthalpy and entropy of complexation revealed the partial binding of U(VI) to CB5 portal. The partial binding was confirmed by spectroscopic techniques viz. extended X absorption fine structure spectroscopy (EXAFS), 1H and 13C NMR. The EXAFS χ(r) versus r spectra for U-CB5 complex has been fitted from 1.4 to 3.5 Å with two oxygen shells and a carbon shell. The presence of three carbon atom in secondary shell shows the involvement of only three carbonyl oxygens directly bonding to U(VI) which is in contrast to that calculated from gas phase DFT calculation of unhydrated system. The combined effect of hydration and formic acid encapsulation led to the enhanced stability of partially bound U(VI) to CB5. In the present work the binding of formic acid has also been studied by fluorescence spectroscopy. ESI-MS data shows the unusual stabilization of U(VI) by CB5 in gas phase.
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Affiliation(s)
- Neetika Rawat
- Radioanalytical Chemistry Division, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India.
| | - Aishwarya Kar
- Radioanalytical Chemistry Division, Trombay, Mumbai 400085, India
| | - A Bhattacharyya
- Radiochemistry Division, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India
| | - A K Yadav
- Atomic and Molecular Physics Division, Trombay, Mumbai 400085, India
| | - D Bhattacharyya
- Atomic and Molecular Physics Division, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India
| | - S N Jha
- Atomic and Molecular Physics Division, Trombay, Mumbai 400085, India
| | - P Kumar
- Fuel Chemistry Division, Trombay, Mumbai 400085, India
| | - S K Nayak
- Bioorganic Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India
| | - B S Tomar
- Homi Bhabha National Institute, Mumbai 400094, India
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Ghosh MK, Mandal S, Mohapatra S, Chatterjee A, Bhattacharyya A, Chattopadhyay S. Spectroscopic, structural, electrochemical, and cytotoxicity studies on dithiocarbamato-chelated ruthenium organometallics incorporating imine-phenol function. J COORD CHEM 2019. [DOI: 10.1080/00958972.2018.1550256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mrinal Kanti Ghosh
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal, India
| | - Suman Mandal
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal, India
| | - Sudip Mohapatra
- Department of Chemistry, Missouri University of S & T, Rolla, MO, USA
| | - Annesha Chatterjee
- Department of Zoology, Immunology Laboratory, University of Calcutta, Kolkata, India
| | - Arindam Bhattacharyya
- Department of Zoology, Immunology Laboratory, University of Calcutta, Kolkata, India
| | - Swarup Chattopadhyay
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal, India
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Biswas S, Roy Chowdhury S, Mandal G, Purohit S, Gupta A, Bhattacharyya A. RelA driven co-expression of CXCL13 and CXCR5 is governed by a multifaceted transcriptional program regulating breast cancer progression. Biochim Biophys Acta Mol Basis Dis 2018; 1865:502-511. [PMID: 30553016 DOI: 10.1016/j.bbadis.2018.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 09/30/2018] [Revised: 11/04/2018] [Accepted: 12/03/2018] [Indexed: 12/18/2022]
Abstract
Lethal metastasis of primary breast tumors to lymph nodes has been found to be associated with the co-expression of chemokine CXCL13 and its receptor CXCR5. To date, however, the precise molecular events regulating the co-expression of CXCL13 and CXCR5 in the context of breast cancer progression have not been identified. Therefore, to extend our understanding of the drivers of breast cancer metastasis, we undertook a line of investigation in this study in which we demonstrate that the transcriptional regulation of CXCL13 is mediated by the reciprocal activity of RelA and Nrf2, while CXCR5 is transcriptionally silenced by CpG island methylation within its promoter. Critically, we show that intra-tumoral CXCL13 and CXCR5 mRNA expression is positively correlated with intra-tumoral RelA expression within the primary tumor of breast cancer (BCa) patients (n = 98). We demonstrate a role for Nrf2 in the negative transcriptional regulation of cxcl13. Furthermore, using a luciferase assay and deletion analysis of the cxcl13 gene promoter, we demonstrate that RelA and Nrf2 directly act upon the cxcl13 promoter to regulate transcription. Chromatin immunoprecipitation PCR, supported by in silico docking analyses, confirmed that RelA and Nrf2 both occupy multiple positions within the cxcl13 promoter. Collectively, in RelA high conditions, low Nrf2 and lack of cxcr5 promoter DNA-methylation govern CXCL13-CXCR5 co-expression within breast tumors, and thus drive disease progression and metastasis.
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Affiliation(s)
- Subir Biswas
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India; Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa 33612, USA
| | - Sougata Roy Chowdhury
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Gunjan Mandal
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Suman Purohit
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India
| | - Arnab Gupta
- Department of Surgical Oncology, Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Kolkata 700063, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, Kolkata 700019, India.
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Bhattacharyya A, Tahir A, Chandrashekar A, Vasisht S, Stinson L, Omatseye J. A cost-utility analysis of decompressive hemicraniectomy versus medical treatment in the management of space-occupying brain oedema post middle cerebral artery infarction. Eur J Neurol 2018; 26:313-e19. [DOI: 10.1111/ene.13814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 09/24/2018] [Indexed: 11/29/2022]
Affiliation(s)
| | - A. Tahir
- Imperial College London Faculty of Medicine; London UK
| | | | - S. Vasisht
- Brighton and Sussex Medical School; Brighton UK
| | - L. Stinson
- King's College London School of Medical Education; London UK
| | - J. Omatseye
- University of Liverpool School of Medicine; Liverpool UK
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Chatterjee S, Chatterjee A, Jana S, Roy H, Nargis N, Bhattacharyya A. Breast tumor-associated exosomes mediate loss of antitumor immune response by arresting cytotoxic T cell functions in the tumor microenvironment. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy427.003] [Citation(s) in RCA: 2] [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: 11/12/2022] Open
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41
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Nair HS, Kumar CMN, Adroja DT, Ritter C, Wills AS, Kockelmann WA, Deen PP, Bhattacharyya A, Strydom AM. Magnetic structure and field-dependent magnetic phase diagram of Ni 2In-type PrCuSi. J Phys Condens Matter 2018; 30:435803. [PMID: 30229750 DOI: 10.1088/1361-648x/aae28d] [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] [Indexed: 06/08/2023]
Abstract
The magnetic structure of the ternary equiatomic intermetallic compound PrCuSi is investigated using neutron powder diffraction experiments in 0 T as well as in external magnetic fields up to 2 T. The PrCuSi compound crystallizes in the hexagonal Ni2In-type structure, in the space group P63/mmc. In this structure, cationic ordering of Cu and Si takes place. The antiferromagnetic phase transition in the Pr sublattice takes place at [Formula: see text] K in 0 T. Under an external magnetic field of 2 T, a field-induced ferromagnetic phase is observed. Magnetoelastic coupling is evidenced by an increase in the unit cell volume. Clear signatures of a mixed antiferromagnetic and ferromagnetic phase in weak, intermediate fields, 0.4-0.8 T, are obtained from the present study. Using the present set of experimental data, we construct the H - T phase diagram of PrCuSi.
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Affiliation(s)
- Harikrishnan S Nair
- Department of Physics, University of Texas at El Paso, 500 W. University Ave, El Paso, TX 79968, United States of America
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42
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Mallick S, Ghosh MK, Mandal S, Rane V, Kadam R, Chatterjee A, Bhattacharyya A, Chattopadhyay S. The first examples of multiply bonded dirhenium(iii,ii) paramagnetic complexes containing nitrobenzoate ligands: spectroscopic, structural, cytotoxicity and computational studies. Dalton Trans 2018; 46:5670-5679. [PMID: 28181614 DOI: 10.1039/c7dt00142h] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
4-Nitrobenzoic acid, 3-nitrobenzoic acid and 4'-nitro[1,1'-biphenyl]-4-carboxylic acid react with the multiply bonded paramagnetic dirhenium(iii,ii) complex Re2(μ-O2CCH3)Cl4(μ-Ph2PCH2PPh2)2 (1) in refluxing ethanol to afford the paramagnetic substitution products of the type Re2(μ-L)Cl4(μ-Ph2PCH2PPh2)2, where L represents the nitrobenzoate ligands [L = 4-nitrobenzoate, 2; 3-nitrobenzoate, 3; 4'-nitro[1,1'-biphenyl]-4-carboxylate, 4]. These are the first examples of paramagnetic dirhenium complexes containing nitrobenzoate ligands. The spectral (UV-vis, IR, and EPR) and electrochemical properties of the complexes are described. The identity of 4 has been established by single-crystal X-ray structure determination (Re-Re distance of 2.2967(4) Å). The electronic structures of the complexes were scrutinized by density functional theory (DFT) calculations. X-band EPR spectral measurements along with the DFT analysis show that the unpaired electron resides in the metal-metal δ* antibonding orbital. The complexes were also screened in vitro for their antiproliferative properties against the human breast cancer cell line MCF-7 by the MTT assay. Flow cytometry analysis showed that the complexes arrested the sub-G0/G1 phase.
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Affiliation(s)
- Suman Mallick
- Department of Chemistry, University of Kalyani, Kalyani, Nadia 741235, WB, India.
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Mukherjee S, Sengupta N, Chaudhuri A, Akbar I, Singh N, Chakraborty S, Suryawanshi AR, Bhattacharyya A, Basu A. PLVAP and GKN3 Are Two Critical Host Cell Receptors Which Facilitate Japanese Encephalitis Virus Entry Into Neurons. Sci Rep 2018; 8:11784. [PMID: 30082709 PMCID: PMC6079088 DOI: 10.1038/s41598-018-30054-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 07/19/2018] [Indexed: 02/06/2023] Open
Abstract
Japanese Encephalitis Virus (JEV), a globally important pathogen, belongs to the family Flaviviridae, is transmitted between vertebrate hosts by mosquitoes, principally by Culex tritaeniorhynchus. The E-glycoprotein of the virus mediates its attachment to the host cell receptors. In this study, we cloned and purified JEV E-glycoprotein in pET28a vector using E. coli BL21 (DE3) cells. A pull down assay was performed using plasma membrane fraction of BALB/c mouse brain and E-glycoprotein as a bait protein. 2-Dimensional Gel Electrophoresis based separation of the interacting proteins was analyzed by mass spectrometry. Among all the identified partners of E-glycoprotein, PLVAP (Plasmalemma vesicle associated protein) and GKN3 (Gastrokine3) showed significant up-regulation in both JEV infected mouse brain and neuro2a cells. In-silico studies also predicted significant interaction of these receptors with E-glycoprotein. Additionally, overexperssion and silencing of these receptors resulted in increase and reduction in viral load respectively, suggesting them as two critical cellular receptors governing JEV entry and propagation in neurons. In support, we observed significant expression of PLVAP but not GKN3 in post-mortem autopsied human brain tissue. Our results establish two novel receptor proteins in neurons in case of JEV infection, thus providing potential targets for antiviral research.
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Affiliation(s)
- Sriparna Mukherjee
- National Brain Research Centre, Manesar, Haryana, 122052, India.,Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Nabonita Sengupta
- National Brain Research Centre, Manesar, Haryana, 122052, India.,Microbiology and Cell Biology, Indian Institute of Science, CV Raman Avenue, Bangalore, Karnataka, 560012, India
| | - Ankur Chaudhuri
- West Bengal State University, North 24 Parganas, Barasat, Kolkata, 700126, India
| | - Irshad Akbar
- National Brain Research Centre, Manesar, Haryana, 122052, India
| | - Noopur Singh
- National Brain Research Centre, Manesar, Haryana, 122052, India
| | - Sibani Chakraborty
- West Bengal State University, North 24 Parganas, Barasat, Kolkata, 700126, India
| | | | - Arindam Bhattacharyya
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
| | - Anirban Basu
- National Brain Research Centre, Manesar, Haryana, 122052, India.
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Chakraborty K, Chatterjee S, Bhattacharyya A. Impact of Treg on other T cell subsets in progression of fibrosis in experimental lung fibrosis. Tissue Cell 2018; 53:87-92. [PMID: 30060832 DOI: 10.1016/j.tice.2018.06.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 05/08/2018] [Revised: 06/12/2018] [Accepted: 06/14/2018] [Indexed: 01/04/2023]
Abstract
Idiopathic pulmonary fibrosis is an irreversible, progressive and lethal lung disease. Regulatory T cells (Tregs) and Th17 cells both are involved in lung fibrosis. But there are only few reports regarding the effect of Treg on other T cell subsets in experimental lung fibrosis. The aim of this study was to investigate the impact of Treg on Th17, CD4+CD28-T, CD4+CD28+T and CD8 + T cell subsets that could drive lung fibrosis. To reach the goal of our study, first we depleted Tregs by anti-CD25 mAb injection in experimental C57BL/6 mice model. It has been demonstrated in our study that depletion of Treg ameliorates bleomycin-induced lung fibrosis by immune modulating Th17 and other important T cell subsets response in lung. Our flow cytometry data revealed that the percentages of Th17, CD4+CD28-T, CD4+CD28+T and CD8 + T cell subsets were decreased in experimental lung fibrosis after Treg depletion. We also observed significant downregulation of IL-17 A in Treg-depleted mice after bleomycin delivery. In addition, the study also suggested that Treg depletion led to considerable upregulation of IFN-γ after bleomycin administration. Therefore, Th17 cells, CD8 + T cells, CD4+CD28- and CD4+CD28+ T cell subsets all are controlled by regulatory T cell, help in progression of fibrosis in experimental lung fibrosis.
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Affiliation(s)
- Kaustav Chakraborty
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, West Bengal, India.
| | - Soumya Chatterjee
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, West Bengal, India
| | - Arindam Bhattacharyya
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, West Bengal, India.
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45
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Ghosh S, Ghosh S, Sinha M, Sadhasivam S, Bhattacharyya A, Samanta R, Nandy A, Saini S, Mishra M, Sengupta S. 1108 Preclinical evaluation of a novel fluoroquinolone for its multi-dimensional therapeutic effects against drug-resistant Propionibacterium acnes induced acne. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1121] [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: 10/17/2022]
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46
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Ghosh N, Mitra S, Sinha P, Chakrabarti N, Bhattacharyya A. TNFR2 mediated TNF-α signaling and NF-κB activation in hippocampus of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-treated mice. Neurosci Res 2018; 137:36-42. [PMID: 29481885 DOI: 10.1016/j.neures.2018.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 11/15/2017] [Revised: 02/21/2018] [Accepted: 02/22/2018] [Indexed: 11/18/2022]
Abstract
1-Methyl-4-Phenyl-1,2,3,6-Tetrahydropyridine (MPTP) -induced neuroinflammation and its impact in hippocampus remain elusive till date. Our present study includes the time dependent changes of inflammatory molecules in mouse hippocampus during MPTP treatment. MPTP treatment increased level of TNF-α, enhanced expression of TNFR2 along with PI3 kinase (PI3K) induced phosphorylation of Akt resulting in persistent nuclear factor-κB (NF-κB) activation. The expressions gradually increased from Day1 post-MPTP treatment, maximally at Day3 post-treatment. MPTP induced translocation of p65 and p52, two subunits of NF-κB family, to nucleus where they had been found to dimerize. Therefore, MPTP induced TNF-α signaling through TNFR2 mediated pathway and recruited p65-p52 dimer in hippocampal nucleus which is reported to have protective effect on hippocampal neurons indicated by unchanged neuronal count in hippocampus in treated groups with respect to control. Our finding suggests that this unique NF-κB dimer plays some role in providing inherent protection to hippocampus during MPTP-treatment.
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Affiliation(s)
- Nabanita Ghosh
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Soham Mitra
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Priyobrata Sinha
- Department of Physiology, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata, 700009, India
| | - Nilkanta Chakrabarti
- Department of Physiology, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata, 700009, India
| | - Arindam Bhattacharyya
- Immunology Lab, Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
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47
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Mandal PK, Biswas S, Mandal G, Purohit S, Gupta A, Majumdar (Giri) A, Roy Chowdhury S, Bhattacharyya A. CCL2 conditionally determines CCL22-dependent Th2-accumulation during TGF-β-induced breast cancer progression. Immunobiology 2018; 223:151-161. [DOI: 10.1016/j.imbio.2017.10.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 10/14/2017] [Indexed: 12/12/2022]
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48
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Bhattacharyya A, Majumdar S, Bhanja SK, Mandal AB, Dash BB. Effect of dietary manipulation and vaccination of turkey breeder hens on immunoglobulin levels of yolk, yolk sac and neonate poults. J Anim Physiol Anim Nutr (Berl) 2018; 102:e957-e963. [PMID: 29352493 DOI: 10.1111/jpn.12865] [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: 08/10/2017] [Accepted: 12/11/2017] [Indexed: 12/01/2022]
Abstract
Two hundred turkey breeder hens and 24 viable toms of 30-35 weeks age of small white variety were distributed into two treatment groups having four replicates of 25 hens and three toms in each treatment. First four replicates were offered a turkey breeder diet (Diet A) (Nutrient requirements of poultry, 1994, National Academic Press, Washington, DC) and the rest four replicates were maintained on a higher plane of nutrition (Diet B) for 8-week duration. After 6 weeks of experimental feeding, two replicates from each treatment groups were vaccinated with ND (R2 B) vaccine. Yolk sac of embryo from birds fed Diet B had a significantly higher (p < .05) IgG, IgM level and HI titre (log 2) than those fed Diet A. HI titre values of embryonic yolk sac from the vaccinated birds fed Diet B were significantly higher (p < .05) than that of the control groups. In addition, HI titre values were significantly higher (p < .05) in the day-old poults of the birds fed Diet B than that of those fed Diet A. There was significantly (p < .01) positive correlation between serum IgG and IgM of the breeder birds and day-old chicks. Similarly, there was significantly (p < .05) positive correlation between yolk IgG and IgM after 1-month experimental feeding and yolk sac IgG and IgM. Positive correlation (p < .05) also existed between yolk sac IgM and day-old chick serum IgM. Furthermore, the HI titres of breeder birds' serum at 14 days post-vaccination were positively correlated with their egg yolk after 10 and 15 days post-vaccination, yolk sac and day-old chicks. Thus, the study envisaged that a higher immunity in neonate poults from turkey breeders maintained on a higher plane of nutrition may be elicited as there was maternal transfer of antibodies from the serum of breeder birds to their offsprings through their yolk sac.
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Affiliation(s)
- A Bhattacharyya
- Department of Poultry Science, College of Veterinary Science and Animal Husbandry, Mathura, India
| | - S Majumdar
- Central Avian Research Institute, Bareilly, India
| | - S K Bhanja
- Central Avian Research Institute, Bareilly, India
| | - A B Mandal
- Central Avian Research Institute, Bareilly, India
| | - B B Dash
- Indian Veterinary Research Institute, Mukteswar, India
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Sarkar SK, Bhattacharyya A, Paria K, Mandal SM. A Retrospective Study on Bacteria Causing Blood Stream Infection: Antibiotics Resistance and Management. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000390] [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: 11/09/2022] Open
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50
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Verma PK, Mohapatra PK, Bhattacharyya A, Yadav AK, Jha SN, Bhattacharyya D. Structural investigations on uranium(vi) and thorium(iv) complexation with TBP and DHOA: a spectroscopic study. NEW J CHEM 2018. [DOI: 10.1039/c7nj04460g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Spectroscopic studies were carried out to understand the complexation of U(vi) and Th(iv) with tri-butyl phosphate (TBP) and N,N-dihexyl octanamide (DHOA) in different non-aqueous solvents.
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Affiliation(s)
- P. K. Verma
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai – 400 085
- India
| | - P. K. Mohapatra
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai – 400 085
- India
| | - A. Bhattacharyya
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai – 400 085
- India
| | - A. K. Yadav
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre
- Mumbai – 400 085
- India
| | - S. N. Jha
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre
- Mumbai – 400 085
- India
| | - D. Bhattacharyya
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre
- Mumbai – 400 085
- India
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