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Srivastava D, Saha B, Patra N. Design of saccharide based organic binder for low-grade iron ore pelletization using atomistic simulations and machine learning methods. J Mol Graph Model 2024; 129:108730. [PMID: 38377793 DOI: 10.1016/j.jmgm.2024.108730] [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: 08/18/2023] [Revised: 12/06/2023] [Accepted: 02/14/2024] [Indexed: 02/22/2024]
Abstract
Inorganic binders like bentonite, used for pelletization of low-grade iron ore, generate iron ore slimes with comparatively high silica and alumina content necessitating extra steps for their removal during iron making process. This demands the usage of organic binders as full or partial replacement of bentonite for iron ore pelletization. In this work, adsorption of organic binders with saccharides skeleton and -H, -OH, -CH2OH and -CH2CH2OH as polar substituents, on goethite surface was studied using density functional theory, molecular dynamics and machine learning. It was observed that adsorption energy of binders on goethite surface had weak dependence on number of hydrogen bonds between them. With this favorable interaction in mind, a library containing 64 organic binders was constructed and adsorption energy of 30 of these binders was computed using molecular dynamics, followed by training of a linear regression model, which was then used to predict the adsorption energy of rest of the binders in the library. It was found that the introduction of -CH2CH2OH at R2 position resulted in statistically significant higher adsorption energy. Binder34 and Binder44 were identified as viable candidates for both goethite and hematite ore pelletization and adsorption of their n-mers on goethite and hematite surfaces was also quantified.
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Affiliation(s)
- Diship Srivastava
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Dhanbad, 826004, India
| | - Biswajit Saha
- Research & Development, Tata Steel Limited, Jamshedpur, 831007, India
| | - Niladri Patra
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Dhanbad, 826004, India.
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2
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Saha B, Lee JH, Kwon I, Chung H. Site-Specific Conjugation of Bottlebrush Polymers to Therapeutic Protein via Bioorthogonal Chemistry. Biomacromolecules 2024. [PMID: 38591457 DOI: 10.1021/acs.biomac.4c00359] [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: 04/10/2024]
Abstract
Achieving efficient and site-specific conjugation of therapeutic protein to polymer is crucial to augment their applicability in the realms of biomedicine by improving their stability and enzymatic activity. In this study, we exploited tetrazine bioorthogonal chemistry to achieve the site-specific conjugation of bottlebrush polymers to urate oxidase (UOX), a therapeutic protein for gout treatment. An azido-functionalized zwitterionic bottlebrush polymer (N3-ZBP) using a "grafting-from" strategy involving RAFT and ATRP methods was synthesized, and a trans-cyclooctene (TCO) moiety was introduced at the polymer end through the strain-promoted azide-alkyne click (SPAAC) reaction. The subsequent coupling between TCO-incorporated bottlebrush polymer and tetrazine-labeled UOX using a fast and safe bioorthogonal reaction, inverse electron demand Diels-Alder (IEDDA), led to the formation of UOX-ZBP conjugates with a 52% yield. Importantly, the enzymatic activity of UOX remained unaffected following polymer conjugation, suggesting a minimal change in the folded structure of UOX. Moreover, UOX-ZBP conjugates exhibited enhanced proteolytic resistance and reduced antibody binding, compared to UOX-wild type. Overall, the present findings reveal an efficient and straightforward route for synthesizing protein-bottlebrush polymer conjugates without compromising the enzymatic activity while substantially reducing proteolytic degradation and antibody binding.
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Affiliation(s)
- Biswajit Saha
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida 32310, United States
| | - Jae Hun Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Inchan Kwon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida 32310, United States
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3
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Yadav K, Saxena A, Gupta M, Saha B, Sarwat M, Rai MP. Comparing Pharmacological Potential of Freshwater Microalgae Carotenoids Towards Antioxidant and Anti-proliferative Activity on Liver Cancer (HUH7) Cell Line. Appl Biochem Biotechnol 2024; 196:2053-2066. [PMID: 37462814 DOI: 10.1007/s12010-023-04635-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2023] [Indexed: 04/23/2024]
Abstract
Chemical-based carotenoids have large implications to health as they may cause adverse side effects. Naturally occurring carotenoids mainly from microalgal sources are emerging as excellent substitute to combat cancer diseases. Astaxanthin is the most powerful antioxidant that derived from selected established microalgae with limited yield. Microalgal bioprospecting may provide the high-yielding sources for astaxanthin production. Hence, in the present research, freshwater microalgae Monoraphidium sp. (NCM no. 5585) and Scenedesmus obliquus (NCM no. 5586) were chosen to explore the unique potential of producing astaxanthin. Identification of bioactive metabolites in extracted carotenoid was analyzed through HPLC. Astaxanthin is identified as a major bioactive metabolite in both carotenoid fraction and β carotene only in Scenedesmus obliquus. Antioxidant potential of microalgal carotenoids was obtained by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and Ferric-reducing antioxidant power (FRAP) assay. The anti-proliferation activity of the extracted carotenoid from Monoraphidium sp. and Scenedesmus obliquus was evaluated against hepatocellular liver carcinoma cell line HUH7 by 3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide (MTT) colorimetric assay. Higher astaxanthin in Monoraphidium sp. leads to boosted antioxidant and anti-proliferation activity contrary to Scenedesmus obliquus that possess both astaxanthin and β carotene. Though freshwater microalgae have a huge potential to create beneficial metabolites like carotenoids, they are rarely studied in the pharmaceutical industry. This work was the first to investigate the anti-proliferative activity of Monoraphidium sp. and Scenedesmus obliquus carotenoid fraction on the HUH7 hepatocarcinoma cell line.
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Affiliation(s)
- Kushi Yadav
- Algal Biotechnology Laboratory, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India
| | - Anjali Saxena
- Organic Synthesis and Medicinal Chemistry Lab, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India
| | - Meenakshi Gupta
- Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India
| | - Biswajit Saha
- Organic Synthesis and Medicinal Chemistry Lab, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India
| | - Maryam Sarwat
- Amity Institute of Pharmacy, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India
| | - Monika Prakash Rai
- Algal Biotechnology Laboratory, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India.
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4
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Jahan S, Rahman MM, Biswas SK, Hossain ATM, Saha B, Haque SMA. Breast Cancer in Younger and Older Women: A Comparison of Clinicopathological Traits. Mymensingh Med J 2024; 33:433-439. [PMID: 38557522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Breast cancer stands as the prevailing invasive cancer globally, bearing high mortality rates among women. Existing evidence indicates diminished survival rates in younger patients. Consequently, this study endeavors to assess and contrast the pathological features of breast cancer in women under 40 years of age with their older counterparts. Conducted as a cross-sectional analysis, this study encompasses 560 patients diagnosed with breast cancer, seeking treatment at Mymensingh Medical College Hospital (MMCH), Community Based Medical College Bangladesh (CBMCB) and several private hospitals in Mymensingh. The gathered data incorporates information such as age, residential area, occupation, tumor histopathology, TNM classification, staging and status of hormone receptor. The patients' mean age (standard deviation) was 49.7±11.9 years, with 20.5% below 40, most were from rural areas and were housewives. Ductal carcinoma prevailed as the most common histopathologic type (87.67%). However, younger patients exhibited a higher prevalence of lobular and other rare carcinomas compared to their older counterparts (p=0.04). Additionally, the younger group demonstrated larger tumor sizes (p=0.01), lymphatic node involvement (p=0.04) and advanced staging (p=0.004). Notably, younger age showed more negativity for estrogen and/or progesterone receptors. The results suggested that women under 40 years old exhibit more aggressive tumor characteristics and a more severe form of breast cancer compared to their older counterparts.
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Affiliation(s)
- S Jahan
- Dr Shahanaz Jahan, Associate Professor, Department of Pathology, Community Based Medical College Bangladesh (CBMCB), Mymensingh, Bangladesh; E-mail:
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Saxena A, Majee S, Ray D, Saha B. Inhibition of cancer cells by Quinoline-Based compounds: A review with mechanistic insights. Bioorg Med Chem 2024; 103:117681. [PMID: 38492541 DOI: 10.1016/j.bmc.2024.117681] [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: 02/06/2024] [Revised: 03/11/2024] [Accepted: 03/11/2024] [Indexed: 03/18/2024]
Abstract
This article includes a thorough examination of the inhibitory potential of quinoline-based drugs on cancer cells, as well as an explanation of their modes of action. Quinoline derivatives, due to their various chemical structures and biological activity, have emerged as interesting candidates in the search for new anticancer drugs. The review paper delves into the numerous effects of quinoline-based chemicals in cancer progression, including apoptosis induction, cell cycle modification, and interference with tumor-growth signaling pathways. Mechanistic insights on quinoline derivative interactions with biological targets enlightens their therapeutic potential. However, obstacles such as poor bioavailability, possible off-target effects, and resistance mechanisms make it difficult to get these molecules from benchside to bedside. Addressing these difficulties might be critical for realizing the full therapeutic potential of quinoline-based drugs in cancer treatment.
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Affiliation(s)
- Anjali Saxena
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh
| | - Suman Majee
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh; Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh
| | - Devalina Ray
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh; Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh.
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6
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Banerjee A, Ghosh A, Saha B, Bhadury P, De P. Surface Charge-Switchable Antifouling Block Copolymer with Bacteriostatic Properties. Langmuir 2024; 40:5314-5325. [PMID: 38408899 DOI: 10.1021/acs.langmuir.3c03771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Zwitterionic polymers are an emerging family of effective, low-fouling materials that can withstand unintended interactions with biological systems while exhibiting enhanced activity in bacterial matrix deterioration and biofilm eradication. Herein, we modularly synthesized an amphiphilic block copolymer, ZABCP, featuring potential bacteriostatic properties composed of a charge-switchable polyzwitterionic segment and a redox-sensitive pendant disulfide-labeled polymethacrylate block. The leucine-appended polyzwitterionic segment with alternatively positioned cationic amine and anionic carboxylate functionalities undergoes charge alterations (+ve → 0 → -ve) on pH variation. By introducing appropriate amphiphilicity, ZABCP forms distinct vesicles with redox-sensitive bilayer membranes and zwitterionic shielding coronas, enabling switching of surface charge. ZABCP vesicles exhibit 180 ± 20 nm hydrodynamic diameter, and its charge switching behavior in response to pH was confirmed by the change of zeta potential value from -23 to +36 mV. The binding interaction between ZABCP vesicles with lysozyme and pepsin proteins strengthens when the surface charge shifts from neutral (pH 7.4) to either anionic or cationic. This surface-charge-switchable phenomenon paves the way for implementing cationic ZABCP vesicles for bacterial cell growth inhibition, which is shown by the pronounced transition of cellular morphology, including clustering, aggregation, or elongation as well as membrane disruption for both Bacillus subtilis (Gram-positive) and Escherichia coli (Gram-negative). Such enhanced bacteriostatic activity could be ascribed to a strong electrostatic interaction between cationic vesicles and negatively charged bacterial membranes, leading to cell membrane disruption. Overall, this study provides a tailor-made approach to adopt low-fouling properties and potential bacteriostatic activity using zwitterionic polymers through precise control of pH.
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Affiliation(s)
- Arnab Banerjee
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Anwesha Ghosh
- Centre for Climate and Environmental Studies, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida 32310, United States
| | - Punyasloke Bhadury
- Centre for Climate and Environmental Studies, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
- Integrative Taxonomy and Microbial Ecology Research Group, Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
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7
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Saikia A, Dutta K, Bora D, Saha B, Singh A. Metal catalyst-free selective acetosyringone synthesis from rice straw lignin. Environ Sci Pollut Res Int 2023; 30:100203-100214. [PMID: 37626195 DOI: 10.1007/s11356-023-29349-0] [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: 06/10/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023]
Abstract
In recent decades, due to abundance (second most abundant natural polymer after cellulose) and sustainability, lignin has attracted much interest from different researchers to use as a raw material for producing various value-added materials such as polymer and fuel. In addition to that, the aromatic structure of lignin makes it a suitable candidate for producing platform chemicals with aromatic rings. As a result, lignin depolymerization has become an interesting process to derive different phenolic monomers like vanillin, acetosyringone, and guaiacol. Among them, due to the bioactive characteristics and efficiency of acetosyringone in plant regulatory systems, the production of acetosyringone from lignin has been presented in this work. A green and cost-effective method was developed for the selective formation of acetosyringone via depolymerization of isolated rice straw lignin (RSL) by using metal catalyst-free conditions in the biphasic medium and described. The RSL was characterized with various spectroscopic techniques such as FT-IR, solid-state 13C NMR, XPS, and TGA. The selectivity of synthesized acetosyringone during depolymerization of RSL was checked from GC-MS analysis. The molecular structure and purity of acetosyringone isolated from preparative thin layer chromatography (TLC) were confirmed with the help of 1H NMR and HRMS, respectively.
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Affiliation(s)
- Ankumoni Saikia
- Coal and Energy Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Koushik Dutta
- Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Debashree Bora
- Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Biswajit Saha
- Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ajit Singh
- Coal and Energy Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, 785006, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Sahu PS, Verma RP, Tewari C, Sahoo NG, Saha B. Facile fabrication and application of highly efficient reduced graphene oxide (rGO)-wrapped 3D foam for the removal of organic and inorganic water pollutants. Environ Sci Pollut Res Int 2023; 30:93054-93069. [PMID: 37498430 DOI: 10.1007/s11356-023-28976-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/21/2023] [Indexed: 07/28/2023]
Abstract
The pace of water contamination is increasing daily due to expanding industrialisation. Finding a feasible solution for effectively remediating various organic and inorganic pollutants from large water bodies remains challenging. However, a nano-engineered advanced hybrid material could provide a practical solution for the efficient removal of such pollutants. This work has reported the development of a highly efficient and reusable absorbent comprising a porous polyurethane (PU) and reduced graphene oxide (rGO) nanosheets (rGOPU) for the removal of different organic oils (industrial oil, engine oil and mustard oil), dyes (MB, MO, RB, EY and MV) and heavy metals (Pb(II), Cr(VI), Cd(II), Co(II) and As(V)). The structure, morphology and properties of the rGOPU hybrid absorbents were analysed by using Raman spectroscopy, field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and Brunner-Emitte-Teller (BET) analysis. The rGOPU possessed both superhydrophobicity and superoleophilicity with water and oil contact angles of about 164° and 0°, respectively. The prepared rGOPU has demonstrated an excellent oil-water separation ability (up to 99%), heavy metals removal efficiency (more than 75%), toxic dye adsorption (more than 55%), excellent recyclability (> 500 times for oils), extraordinary mechanical stability (90% compressible for > 1000 cycles) and high recoverability. This work presents the first demonstration of rGOPU's multifunctional absorbent capacity in large-scale wastewater treatment for effectively removing a wide variety of organic and inorganic contaminants.
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Affiliation(s)
- Prateekshya Suman Sahu
- Department of Chemical Engineering, National Institute of Technology Rourkela, (NIT Rourkela) Sector 1, Rourkela, Odisha, 768009, India
| | - Ravi Prakash Verma
- Department of Chemical Engineering, National Institute of Technology Rourkela, (NIT Rourkela) Sector 1, Rourkela, Odisha, 768009, India
| | - Chetna Tewari
- PRS-Nanoscience and Nanotechnology Centre, Department of Chemistry, D.S.B. Campus, Kumaun University, -263001, Nainital, Uttarakhand, India
| | - Nanda Gopal Sahoo
- PRS-Nanoscience and Nanotechnology Centre, Department of Chemistry, D.S.B. Campus, Kumaun University, -263001, Nainital, Uttarakhand, India
| | - Biswajit Saha
- Department of Chemical Engineering, National Institute of Technology Rourkela, (NIT Rourkela) Sector 1, Rourkela, Odisha, 768009, India.
- Indian Institute of Technology Gandhinagar (IIT Gandhinagar), Palaj, Gujrat, 382355, India.
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Dabhade AH, Verma RP, Paramasivan B, Kumawat A, Saha B. Development of silver nanoparticles and aptamer conjugated biosensor for rapid detection of E. coli in a water sample. 3 Biotech 2023; 13:244. [PMID: 37346389 PMCID: PMC10279593 DOI: 10.1007/s13205-023-03663-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 06/05/2023] [Indexed: 06/23/2023] Open
Abstract
A simple, rapid, and sensitive electrochemical biosensor based on a screen-printed carbon electrode (SPCE) was developed for onsite detection of E. coli in real time. This work analyzed the effect of aptamer conjugation and PBS buffer solution on the colloidal stability of the silver nanoparticles (AgNPs). Aggregations of the AgNPs after aptamer conjugation in PBS buffer were observed from the particle size distribution analysis. The AgNP-aptamer conjugation and its affinity towards E. coli (DH5α) were confirmed by UV-visible spectrophotometry, which showed a linear increment in the absorption with increasing E.coli concentration. The screen-printed carbon electrodes were modified by drop-casting of AgNPs, which were used as an effective immobilization platform for E. coli-specific aptamers. The modified electrode's surface modification and redox behavior were characterized using cyclic voltammetry. Finally, E. coli was detected using differential pulse voltammetry with an optimized incubation time of 15 min. The developed biosensors showed a linear decrease in current intensity with an increase in the concentration of E. coli. The biosensor had a relative standard deviation (RSD) of 6.91% (n = 3), which showed good reproducibility. The developed biosensors are highly sensitive and have a limit of detection (LOD) as low as 150 CFU/ml. The biosensor showed good selectivity for E.coli coli when comparing the signal response obtained for bacteria other than E.coli. Also, the biosensor was found stable for four weeks at room temperature and showed high recoveries from 95.27% to 107% during the tap water sensitivity validation.
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Affiliation(s)
- Ajinkya Hariram Dabhade
- Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 769008 India
| | - Ravi Prakash Verma
- Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 769008 India
| | - Balasubramanian Paramasivan
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 769008 India
| | - Adhidesh Kumawat
- Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 769008 India
| | - Biswajit Saha
- Department of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gujarat 382355 India
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Sahu PS, Verma RP, Dabhade AH, Tewari C, Sahoo NG, Saha B. A novel, efficient and economical alternative for the removal of toxic organic, inorganic and pathogenic water pollutants using GO-modified PU granular composite. Environ Pollut 2023; 328:121201. [PMID: 36738883 DOI: 10.1016/j.envpol.2023.121201] [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] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/16/2023] [Accepted: 02/01/2023] [Indexed: 05/09/2023]
Abstract
Multicomponent wastewater treatment utilising simple and cost-effective materials and methods is an important research topic. This study has reported the fabrication and utilisation of graphene oxide (GO) embedded granular Polyurethane (PU) (GOPU) adsorbent for the treatment of lead ion (Lead ion (Pb(II)), Methylene blue (MB), and E. coli. PU granules were wrapped with GO flakes to improve hydrophilicity, interaction with polluted water, cation-exchange reaction, and binding of pollutants on its surface. Synthesised GOPU granules were characterised by X-Ray Diffraction (XRD), Raman, Fourier transform infrared (FTIR) spectroscopy, and Scanning electron microscopy (SEM) analysis to ensure the successful synthesis of GO and fabrication of GOPU granules. Further, batch and continuous adsorption processes were studied in different operating conditions to evaluate the performance of GOPU granules in practical applications. The kinetic and isotherm analyses revealed that the adsorption of Lead (Pb(II)) ion and Methylene Blue (MB) dye followed the Freundlich and Langmuir isotherm models, respectively, and they showed good agreement with the Pseudo-second-order kinetic model. The adsorption capacities of GOPU granules for the elimination of Pb(II) and MB dye were about 842 mg/g and 899 mg/g, respectively. Additionally, investigations into the fixed bed column revealed that the adsorption column performed best at a flow rate of 5 mL/min and a bed height of 6 cm. Pb(II) adsorption had a bed uptake capacity (qbed) of 88 mg/g and percentage removal efficiency (%R) of 76%. Similarly, MB adsorption had a bed uptake capacity of 202 mg/g and a percentage removal efficiency of 71%. A systematic invention on antibacterial activity toward E. coli showed that The GOPU granules have a removal efficiency of about 100% at an exposure of 24 h. These findings indicated the possible use of GOPU granules as promising adsorbents for various water pollutants.
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Affiliation(s)
- Prateekshya Suman Sahu
- Department of Chemical Engineering, National Institute of Technology Rourkela, (NIT Rourkela) Sector 1, Rourkela, Odisha, 768009, India
| | - Ravi Prakash Verma
- Department of Chemical Engineering, National Institute of Technology Rourkela, (NIT Rourkela) Sector 1, Rourkela, Odisha, 768009, India
| | - Ajinkya Hariram Dabhade
- Department of Chemical Engineering, National Institute of Technology Rourkela, (NIT Rourkela) Sector 1, Rourkela, Odisha, 768009, India
| | - Chetna Tewari
- PRS-Nanoscience and Nanotechnology Centre, Department of Chemistry, D.S.B. Campus, Kumaun University, Nainital, 263001, Uttarakhand, India
| | - Nanda Gopal Sahoo
- PRS-Nanoscience and Nanotechnology Centre, Department of Chemistry, D.S.B. Campus, Kumaun University, Nainital, 263001, Uttarakhand, India
| | - Biswajit Saha
- Department of Chemical Engineering, National Institute of Technology Rourkela, (NIT Rourkela) Sector 1, Rourkela, Odisha, 768009, India; Indian Institute of Technology Gandhinagar, (IIT Gandhinagar), Palaj, Gujarat, 382355, India.
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11
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Bhattacharya A, Saha B, Chattopadhyay S, Sarkar R. Deep feature selection using adaptive β-Hill Climbing aided whale optimization algorithm for lung and colon cancer detection. Biomed Signal Process Control 2023. [DOI: 10.1016/j.bspc.2023.104692] [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: 02/18/2023]
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12
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Kalita L, Sonowal K, Basyach P, Saha B, Saikia L. Multifunctional CdS Nanoparticle-Decorated CeO 2 as Efficient Visible Light Photocatalysts and Toxic Cr(VI) Sensors. ACS Omega 2023; 8:11768-11781. [PMID: 37033836 PMCID: PMC10077448 DOI: 10.1021/acsomega.2c05811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 03/13/2023] [Indexed: 06/19/2023]
Abstract
Several one-dimensional and three-dimensional CdS@CeO2 nanocomposites were synthesized by a solvothermal route. A nanoflower-shaped CdS@CeO2 nanocomposite (CdS-NF@CeO2) was selected as the model catalyst after various characterizations. It was, then, employed directly as a luminescent sensor for Cr(VI) detection in an aqueous medium. A good linear quenching was observed in the range of 0-0.5 μM with a detection limit of 0.04 μM. The quantum yield of the catalyst was found to be 73%. Moreover, our catalyst is highly selective toward Cr(VI) and can be applied as an efficient sensor for real water analysis. The efficiency of the catalyst was also tested in controlling the photocatalytic activity for oxidation of benzylamine to N-benzylidenebenzylamine under a domestic LED bulb with molecular O2 as a sole, green oxidant. Conversion (>99.9%) and selectivity as high as 100% were observed for the CdS-NF@CeO2 photocatalyst. These results show the potential applications of CdS-NF@CeO2 nanocomposites as an efficient photocatalyst for organic transformation and environmental remediation.
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Affiliation(s)
- Lisamoni Kalita
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Karanika Sonowal
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Purashri Basyach
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Biswajit Saha
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Lakshi Saikia
- Advanced
Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Islam M, Rabbani G, Siddiqua S, Islam S, Islam R, Hossain A, Hossen N, Saha B, Khatun N, Alif S, Karim M. 150P Sex differences in inoperable lung cancer risk and prognosis: Evidence from low-income population setting. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00404-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Singhania A, Chatterjee S, Kalita S, Saha S, Chettri P, Gayen FR, Saha B, Sahoo P, Bandyopadhyay A, Ghosh S. An Inbuilt Electronic Pawl Gates Orbital Information Processing and Controls the Rotation of a Double Ratchet Rotary Motor. ACS Appl Mater Interfaces 2023; 15:15595-15604. [PMID: 36926805 DOI: 10.1021/acsami.3c01103] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A direct external input energy source (e.g., light, chemical reaction, redox potential, etc.) is compulsory to supply energy to rotary motors for accomplishing rotation around the axis. The stator leads the direction of rotation, and a sustainable rotation requires two mutual input energy supplies (e.g., light and heat, light and pH or metal ion, etc.); however, there are some exceptions (e.g., covalent single bond rotors and/or motors). On the contrary, our experiment suggested that double ratchet rotary motors (DRMs) can harvest power from available thermal noise, kT, for sustainable rotation around the axis. Under a scanning tunneling microscope, we have imaged live thermal noise movement as a dynamic orbital density and resolved the density diagram up to the second derivative. A second input energy can synchronize multiple rotors to afford a measurable output. Therefore, we hypothesized that rotation control in a DRM must be evolved from an orbital-level information transport channel between the two coupled rotors but was not limited to the second input energy. A DRM comprises a Brownian rotor and a power stroke rotor coupled to a -C≡C- stator, where the transport of information through coupled orbitals between the two rotors is termed the vibrational information flow chain (VIFC). We test this hypothesis by studying the DRM's density functional theory calculation and variable-temperature 1H nuclear magnetic resonance. Additionally, we introduced inbuilt pawl-like functional moieties into a DRM to create different electronic environments by changing proton intercalation interactions, which gated information processing through the VIFC. The results show the VIFC can critically impact the motor's noise harvesting, resulting in variable rotational motions in DRMs.
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Affiliation(s)
- Anup Singhania
- Natural Product Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Satadru Chatterjee
- Natural Product Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
| | - Sudeshna Kalita
- Natural Product Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Supriya Saha
- Advanced Computation & Data Sciences Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Green Engineered Materials and Additive Manufacturing Division, CSIR-AMPRI, 462026 Bhopal, Madhya Pradesh, India
| | - Prerna Chettri
- Natural Product Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Firdaus Rahaman Gayen
- Advanced Materials Group, Material Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Biswajit Saha
- Advanced Materials Group, Material Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pathik Sahoo
- International Center for Materials and Nanoarchitectronics (MANA) and Research Center for Advanced Measurement and Characterization (RCAMC), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
| | - Anirban Bandyopadhyay
- International Center for Materials and Nanoarchitectronics (MANA) and Research Center for Advanced Measurement and Characterization (RCAMC), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
| | - Subrata Ghosh
- Natural Product Chemistry Group, Chemical Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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15
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Kushwaha P, Kumar V, Saha B. Current development of β-carboline derived potential antimalarial scaffolds. Eur J Med Chem 2023; 252:115247. [PMID: 36931118 DOI: 10.1016/j.ejmech.2023.115247] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/26/2023] [Accepted: 03/01/2023] [Indexed: 03/12/2023]
Abstract
β-Carboline alkaloids are an eminent class of nitrogen-based natural alkaloids and therapeutic molecules which exert various pharmacological activities through diverse mechanisms. A lot of attention has recently been directed towards this moiety in order to develop effective antimalarial drugs. "Malaria", an acute febrile illness caused by diverse Plasmodium parasites, is a continuing and escalating problem that devastates economically less developed countries by significantly increased morbidity and mortality rates. The mounting parasite resistance towards the antimalarial drugs and augmenting the 'habitat of the insect vector' are creating a catastrophe, indicating an urgent need for new efficacious therapeutics to combat this tropical disease. This article comprehensively encapsulates the clinical and preclinical antimalarial scaffolds comprising β-carboline moiety in their structure. Herein, various classes of natural and semi-synthetic analogues of β-carbolines reported in the last decade (2011-2021) have been extensively studied and illustrated. This review will help the readers to develop an insight into the β-carboline based antimalarials and molecular mechanisms lying behind their mode of action, which is anticipated to be beneficial for the future development of new β-carboline based therapeutics.
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Affiliation(s)
- Preeti Kushwaha
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida, 201303, Uttar Pradesh, India
| | - Vipin Kumar
- Sophisticated Analytical Instrument Facility and Research Division, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida, 201303, Uttar Pradesh, India.
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Adhikary S, Jain K, Saha B, Chowdhury D. Optimized EEG based mood detection with signal processing and deep neural networks for brain-computer interface. Biomed Phys Eng Express 2023; 9. [PMID: 36745911 DOI: 10.1088/2057-1976/acb942] [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: 10/22/2022] [Accepted: 02/06/2023] [Indexed: 02/08/2023]
Abstract
Electroencephalogram (EEG) is a very promising and widely implemented procedure to study brain signals and activities by amplifying and measuring the post-synaptical potential arising from electrical impulses produced by neurons and detected by specialized electrodes attached to specific points in the scalp. It can be studied for detecting brain abnormalities, headaches, and other conditions. However, there are limited studies performed to establish a smart decision-making model to identify EEG's relation with the mood of the subject. In this experiment, EEG signals of 28 healthy human subjects have been observed with consent and attempts have been made to study and recognise moods. Savitzky-Golay band-pass filtering and Independent Component Analysis have been used for data filtration.Different neural network algorithms have been implemented to analyze and classify the EEG data based on the mood of the subject. The model is further optimised by the usage of Blackman window-based Fourier Transformation and extracting the most significant frequencies for each electrode. Using these techniques, up to 96.01% detection accuracy has been obtained.
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Affiliation(s)
- Subhrangshu Adhikary
- Department of Research & Development, Spiraldevs Automation Industries Pvt. Ltd, Raignaj, Uttar Dinajpur, West Bengal-733123, India
| | - Kushal Jain
- Resident Doctor, Vardhman Mahaveer Medical College and Safdarjung Hospital, New Delhi-110029, India
| | - Biswajit Saha
- Department of Computer Science and Engineering, Dr B.C. Roy Engineering College, Durgapur, West Bengal-713206, India
| | - Deepraj Chowdhury
- Department of Electronics and Communication Engineering, International Institute of Information Technology Naya Raipur, Naya Raipur, India
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17
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Sinha S, Das S, Saha B, Paul D, Basu B. Anti-microbial, anti-oxidant, and anti-breast cancer properties unraveled in yeast carotenoids produced via cost-effective fermentation technique utilizing waste hydrolysate. Front Microbiol 2023; 13:1088477. [PMID: 36741891 PMCID: PMC9889640 DOI: 10.3389/fmicb.2022.1088477] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/28/2022] [Indexed: 01/19/2023] Open
Abstract
Introduction Natural carotenoids are well known for their anti-oxidant property and also shown to have antimicrobial and anticancer efficacy. Production of carotenoids from microbial resources mainly from yeast has attracted commercial interest. Breast cancer has the highest incidence among women, and therapy resistance and lack of effective therapeutic strategies are major treatment bottlenecks, particularly for triple-negative subtypes. Yeast carotenoids are recently being evaluated for affordable, non-toxic, natural product-based therapies. In the present study, we have shown an environment-friendly and inexpensive method for carotenoid production from yeasts, utilizing "mandi" wastes, and investigated the biomedical properties of carotenoids, particularly antineoplastic properties. Methods Vegetable "mandi" waste was used to prepare waste hydrolysate, a culture medium, in which oleaginous red yeast Rhodosporidium sp. was grown. Carotenoid pigments were extracted using the solvent extraction method and analyzed by UV spectroscopy, thin-layer chromatography (TLC), and high-performance liquid chromatography (HPLC). Antimicrobial, antioxidant, and anticancer activities of the extract were evaluated, followed by in silico docking and absorption, distribution, metabolism, and excretion/toxicity (ADME/T) studies. Results Carotenoid extract was found to be composed of three main pigments-β-carotene, torulene, and torularhodin. Extract exhibited significant antioxidant, antimicrobial, and anti-breast cancer activities in vitro while being biocompatible. Interestingly, carotenoids have shown better efficacy in triple-negative breast cancer (TNBC) cells than ER+PR+ cells. In silico evaluation predicted binding with breast cancer-specific molecular targets, specifically the three components showed good binding energy toward VEGF receptors and good drug likeliness properties, as well as less toxicity. Discussion This is the first report on anti-breast cancer activities, particularly targeting TNBC cells by red yeast carotenoids (β-carotene, torulene, and torularhodin) produced via a sustainable environment-friendly bioprocess utilizing waste hydrolysate.
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Affiliation(s)
- Sweta Sinha
- Amity Institute of Biotechnology, Amity University, Noida, India
| | - Souvik Das
- Department of Neuroendocrinology and Experimental Hematology, Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Noida, India
| | - Debarati Paul
- Amity Institute of Biotechnology, Amity University, Noida, India,*Correspondence: Debarati Paul,
| | - Biswarup Basu
- Department of Neuroendocrinology and Experimental Hematology, Chittaranjan National Cancer Institute, Kolkata, West Bengal, India,Biswarup Basu, ,
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18
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Saha AK, Saha B. Profile of neonatal candidiasis in tertiary neonatal intensive care unit: A report from a developing country. J Neonatal Perinatal Med 2023; 16:501-506. [PMID: 37718871 DOI: 10.3233/npm-231204] [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] [Indexed: 09/19/2023]
Abstract
BACKGROUND Systemic candidiasis is an important nosocomial infection in neonatal intensive care units. The objective of this study was to identify the change in the profile of neonatal candidiasis in a tertiary neonatal intensive care unit (NICU) in eastern India in recent times. METHODS It was a retrospective review of case records from 2014 to 2019 from a tertiary NICU of eastern India. Data of the fungal sepsis, demographic details, risk factors of fungal sepsis and mortality were collected from 103 neonates. RESULTS One hundred and three neonates had blood culture positive for fungal species of which 91 (88.3%) infants weighed ≥1500 g and 66 (64%) infants were term. There was significant higher incidence of candidiasis among outborn (Relative risk of outborn 18.84, 95% CI 10.74-33.05). Prolonged antibiotic usage (>14 days), meropenem usage (>5 days), central catheterization (>5 days), invasive mechanical ventilation (>5 days), surgical intervention were found in 64 (62.1%), 46 (44.6%), 31(30.0%), 40 (38.8%) and 39 (37.8%) infants. Non albicans candida (NAC) was isolated as the predominant species (82/103, 79.6%). Resistance to both of fluconazole and amphotericin B were found in 19 (18.4%) babies. Presence of NAC infection and resistance to both amphotericin B and fluconazole were independent predictors of candida associated mortality in NICU. CONCLUSION Neonatal candidiasis is found among outborn infants with higher birth weight and gestational age. NAC species are predominant organisms with resistance to common antifungal drugs.
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Affiliation(s)
- A K Saha
- Department of Neonatology, Institute of Post-Graduate Medical Education & Research and SSKM Hospital, Kolkata, India
| | - B Saha
- Department of Neonatology, Institute of Post-Graduate Medical Education & Research and SSKM Hospital, Kolkata, India
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Sahu PS, Verma RP, Tewari C, Sahoo NG, Saha B. Environmental application of amine functionalised magnetite nanoparticles grafted graphene oxide chelants. Environ Sci Pollut Res Int 2022; 29:86485-86498. [PMID: 35708809 DOI: 10.1007/s11356-022-21407-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
This study proposed a two-step method involving hydrothermal and electrostatic self-assembly processes for synthesising an amine-functionalised magnetic ligand graphene oxide-based nanocomposite (EDTA@Fe3O4@GO). The amine groups were successfully attached to the surface of iron (II, III) oxide (Fe3O4), which were embedded on the surface of graphene oxide (GO) (Fe3O4@GO). This EDTA@ Fe3O4@GO nanocomposite was used as a chelating agent to bind the toxic heavy metal ions. EDTA@Fe3O4@GO demonstrated the synergistic effect between the large surface area and magnetic behaviour of Fe3O4@GO and the chelating effect of EDTA, and it showed higher efficiency than the individual GO and Fe3O4. The possible structural and compositional characteristics were proposed based on Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET) and Raman spectroscopy analysis. The outcomes revealed the mechanism behind the excellent As(V) adsorption onto EDTA@Fe3O4@GO. The adsorption process was studied by fitting the experimental data obtained into various kinetic and isotherm models. The pseudo-second-order (PSO) kinetic model and the Freundlich isotherm model (FIM) were found to be the best fit models for the removal of As(V) by EDTA@Fe3O4@GO. EDTA@Fe3O4@GO has the utmost adsorption capacity of 178.4 mg/g. Furthermore, the EDTA@Fe3O4@GO nanocomposite is reusable, and it showed excellent adsorption capacity up to 5 cycles. This study has provided insight into the potential of EDTA@Fe3O4@GO and its applications in large-scale wastewater treatment.
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Affiliation(s)
- Prateekshya Suman Sahu
- Department of Chemical Engineering, National Institute of Technology Rourkela (NIT Rourkela), Sector 1, Rourkela, Odisha, 768009, India
| | - Ravi Prakash Verma
- Department of Chemical Engineering, National Institute of Technology Rourkela (NIT Rourkela), Sector 1, Rourkela, Odisha, 768009, India
| | - Chetna Tewari
- PRS-Nanoscience and Nanotechnology Centre, Department of Chemistry, D.S.B. Campus, Kumaun University, Nainital, 263001, Uttarakhand, India
| | - Nanda Gopal Sahoo
- PRS-Nanoscience and Nanotechnology Centre, Department of Chemistry, D.S.B. Campus, Kumaun University, Nainital, 263001, Uttarakhand, India
| | - Biswajit Saha
- Department of Chemical Engineering, National Institute of Technology Rourkela (NIT Rourkela), Sector 1, Rourkela, Odisha, 768009, India.
- Centre for Nanomaterials, National Institute of Technology Rourkela (NIT Rourkela), Sector 1, Rourkela, Odisha, 769008, India.
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Bhagade S, Debnath A, Das D, Saha B. Thermoelectric composite material of CuBO2 incorporated PANI powders with enhanced Seebeck coefficient. J Polym Res 2022. [DOI: 10.1007/s10965-022-03306-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Bora D, Gayen FR, Saha B. Ammonia from dinitrogen at ambient conditions by organometallic catalysts. RSC Adv 2022; 12:33567-33583. [PMID: 36505716 PMCID: PMC9682445 DOI: 10.1039/d2ra06156b] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/15/2022] [Indexed: 11/24/2022] Open
Abstract
Fixation of atmospheric dinitrogen in plants by [Mo-Fe] cofactor of nitrogenase enzyme takes place efficiently under atmospheric pressure and normal temperature. In search for an alternative methodology for the highly energy intensive Haber-Bosch process, design and synthesis of highly efficient inorganic and organometallic complexes by mimicking the structure and function of [Mo-Fe] cofactor system is highly desirable for ammonia synthesis from dinitrogen. An ideal catalyst for ammonia synthesis should effectively catalyse the reduction of dinitrogen in the presence of a proton source under mild to moderate conditions, and thereby, significantly reducing the cost of ammonia production and increasing the energy efficacy of the process. In the light of current research, it is evident that there is a plenty of scope for the development and enhanced performance of the inorganic and organometallic catalysts for ammonia synthesis under ambient temperature and pressure. The review furnishes a comprehensive outlook of numerous organometallic catalysts used in the synthesis of ammonia from dinitrogen in the past few decades.
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Affiliation(s)
- Debashree Bora
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and TechnologyJorhatAssam-785006India,Academy of Scientific and Innovative Research (AcSIR)Ghaziabad-201002India
| | - Firdaus Rahaman Gayen
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and TechnologyJorhatAssam-785006India,Academy of Scientific and Innovative Research (AcSIR)Ghaziabad-201002India
| | - Biswajit Saha
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and TechnologyJorhatAssam-785006India,Academy of Scientific and Innovative Research (AcSIR)Ghaziabad-201002India
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22
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Saha B, Khatun N, Azim N, Islam SA, Proteek MF, Islam MR, Begum FA, Biddut MA, Khan MK, Islam MR. Platelet Count as a Prognostic Factor in Stage IV Non-Small Cell Lung Cancer. Mymensingh Med J 2022; 31:937-946. [PMID: 36189536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Increase platelet count can accompany various cancers including lung cancer. This finding has recently been suggested to indicate poor prognosis. In patients with malignancies, thrombocytosis has previously been related disease stage, histological type and survival. In this study, the prevalence of thrombocytosis and the prognostic information provided by platelet count were analyzed in patients with stage IV Non-Small Cell Lung Cancer (NSCLC) with an aim to assess elevated platelet count as a prognostic factor in patients with stage IV NSCLC and to investigate whether there is relationship between thrombocytosis, other clinico-pathologic factors and median survival. This prospective observational study was conducted in National Institute of Cancer Research and Hospital (NICRH), Dhaka, Bangladesh from September 2019 to August 2020. A total of 108 patients were enrolled purposively. Detail history taking, thorough physical examination was done along with relevant investigations. Data were collected by semi structured questionnaire and analysis was done with the help of Statistical Package for Social Science (SPSS), version 21.0. The mean age of the patients was found 56.4±12.2 years with range from 35 to 75 years. Majority (79.6%) patients were male, 52.8% patients came from low income and 36.1% were farmer. Majority (40.7%) were symptomatic; in bed >50.0% of day. Almost two third (59.3%) had <5.0% weight loss. Almost three fourth (69.4%) had squamous cell carcinoma. At the time of first assessment 75(69.4%) patients had normal and 33(30.6%) had elevated platelet count level. Age, sex and histological type were statistically not significant between normal and elevated platelet count level groups. But performance status, weight loss were statistically significant (p<0.05) between two groups. According to univariate analysis, age, performance status at presentation, weight loss more than 10.0% for 3 months and platelet count prior the start of treatment were all significant predictors for the overall survival. In multivariate analysis age, performance status at presentation and initial thrombocytosis were independent prognostic determinants for overall survival. Median survival time was significantly higher for the normal platelet count group and elevated platelet count group (7.5 months versus 5.5 months) respectively (95% CI, 5.5-7.5), p<0.001. The frequency of thrombocytosis in patients with stage-IV NSCLC at first presentation was 30.6% and median survival time in these patients was significantly shorter compared in patients without thrombocytosis. These results concluded that an elevated platelet count could be a useful prognostic factor for survival in patients with stage-IV NSCLC.
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Affiliation(s)
- B Saha
- Dr Beauty Saha, Registrar, Department of Radiotherapy, Mymensingh Medical College Hospital, Mymensingh, Bangladesh; E-mail:
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Chowdhury P, Banerjee A, Saha B, Bauri K, De P. Stimuli-Responsive Aggregation-Induced Emission (AIE)-Active Polymers for Biomedical Applications. ACS Biomater Sci Eng 2022; 8:4207-4229. [PMID: 36054823 DOI: 10.1021/acsbiomaterials.2c00656] [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] [Indexed: 11/28/2022]
Abstract
At high concentration or in the aggregated state, most of the traditional luminophores suffer from the general aggregation-caused quenching (ACQ) effect, which significantly limits their biomedical applications. On the contrary, a few fluorophores exhibit an aggregation-induced emission (AIE) feature which is just the opposite of ACQ. The luminophores with aggregation-induced emission (AIEgens) have exhibited noteworthy advantages to get tunable emission, excellent photostability, and biocompatibility. Incorporating AIEgens into polymer design has yielded diversified polymer systems with fascinating photophysical characteristics. Again, stimuli-responsive polymers are capable of undergoing chemical and/or physical property changes on receiving signals from single or multiple stimuli. The combination of the AIE property and stimuli responses in a single polymer platform provides a feasible and effective strategy for the development of smart polymers with promising biomedical applications. Herein, the advancements in stimuli-responsive polymers with AIE characteristics for biomedical applications are summarized. AIE-active polymers are first categorized into conventional π-π conjugated and nonconventional fluorophore systems and then subdivided based on various stimuli, such as pH, redox, enzyme, reactive oxygen species (ROS), and temperature. In each section, the design strategies of the smart polymers and their biomedical applications, including bioimaging, cancer theranostics, gene delivery, and antimicrobial examples, are introduced. The current challenges and future perspectives of this field are also stated at the end of this review article.
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Affiliation(s)
- Pampa Chowdhury
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Arnab Banerjee
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Kamal Bauri
- Department of Chemistry, Raghunathpur College, Raghunathpur, 723133 Purulia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
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Saha B, Debnath A, Saha B. Fabrication of PANI@Fe–Mn–Zr hybrid material and assessments in sono-assisted adsorption of methyl red dye: Uptake performance and response surface optimization. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100635] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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25
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Saha B, Sahu G, Sharma P. A Novel Therapeutic Approach With Sodium Pyruvate on Vital Signs, Acid–Base, and Metabolic Disturbances in Rats With a Combined Blast and Hemorrhagic Shock. Front Neurol 2022; 13:938076. [PMID: 36034304 PMCID: PMC9400716 DOI: 10.3389/fneur.2022.938076] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 06/21/2022] [Indexed: 11/13/2022] Open
Abstract
Background Blast injuries from improvised explosive devices (IEDs) are known to cause blast traumatic brain injuries (bTBIs), hemorrhagic shock (HS), organ damage, mitochondrial dysfunction, and subsequent free radical production. A pre-citric acid cycle reagent, pyruvate, is suggested to improve mitochondrial ATP production through the activation of the mitochondrial gatekeeper enzyme “pyruvate dehydrogenase complex (PDH).” Our study aimed to investigate the role of physiologic, metabolic, and mitochondrial effects of hypertonic sodium pyruvate resuscitation in rats with a combined blast and HS injury. Methods A pre-clinical rat model of combined injury with repetitive 20 PSI blast exposure accompanied with HS and fluid resuscitation (sodium pyruvate as metabolic adjuvant or hypertonic saline as control), followed by transfusion of shed blood was used in this study. Control sham animals (instrumental and time-matched) received anesthesia and cannulation, but neither received any injury nor treatment. The mean arterial pressure and heart rate were recorded throughout the experiment by a computerized program. Blood collected at T0 (baseline), T60 (after HS), and T180 (end) was analyzed for blood chemistry and mitochondrial PDH enzyme activity. Results Sodium pyruvate resuscitation significantly improved the mean arterial pressure (MAP), heart rate (HR), pulse pressure (PP), hemodynamic stability (Shock index), and autonomic response (Kerdo index) after the HS and/or blast injury. Compared with the baseline values, plasma lactate and lactate/pyruvate ratios were significantly increased. In contrast, base excess BE/(HCO3-) was low and the pH was also acidotic <7.3, indicating the sign of metabolic acidosis after blast and HS in all animal groups. Sodium pyruvate infusion significantly corrected these parameters at the end of the experiment. The PDH activity also improved after the sodium pyruvate infusion. Conclusion In our rat model of a combined blast and HS injury, hypertonic sodium pyruvate resuscitation was significantly effective in hemodynamic stabilization by correcting the acid–base status and mitochondrial mechanisms via its pyruvate dehydrogenase enzyme.
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Kim S, Saha B, Boykin J, Chung H. Gallol containing adhesive polymers. Journal of Macromolecular Science, Part A 2022. [DOI: 10.1080/10601325.2022.2100790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Sundol Kim
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, USA
| | - Biswajit Saha
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, USA
| | - Jacob Boykin
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, USA
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, USA
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Ray M, Saha B, Rout TK, Bhagat AN. Adsorption mechanism and performance analysis of alkaloids as green corrosion inhibitors on mild steel. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02890-w] [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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Kumar V, Saxena A, Patra R, Ray D, Li HY, Saha B. Synthesis of fused polycyclic β-carboline derivatives using Ugi-4CR followed by cascade cyclization. Mol Divers 2022; 27:951-957. [PMID: 35652975 DOI: 10.1007/s11030-022-10451-3] [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: 03/17/2022] [Accepted: 04/23/2022] [Indexed: 11/28/2022]
Abstract
Ugi-four component reaction (Ugi-4CR) is extremely attractive for diversity-oriented and step economical synthesis as evident from past applications. Here we report the synthesis of fused polycyclic β-carboline derivatives by sequential Pictet-Spengler's and Ugi-4CR multi-component reaction followed by cascade cyclization. The post cyclisation of Ugi product provides conformationally stable heterocyclic molecule that is expected to be suitable for interaction with different biological targets. The methodology provides a simple and facile access to heterocycles embedded in polycyclic framework which otherwise seems difficult to synthesize by conventional methods. Synthesis of fused Polycyclic β-Carboline Derivatives Using Ugi-4CR Followed by Cascade Cyclization.
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Affiliation(s)
- Vipin Kumar
- Amity Institute of Click Chemistry Research and Studies, Amity University, Sector 125, Noida, Uttar Pradesh, 201313, India
| | - Anjali Saxena
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida, Uttar Pradesh, 201313, India
| | - Ranjan Patra
- Amity Institute of Click Chemistry Research and Studies, Amity University, Sector 125, Noida, Uttar Pradesh, 201313, India
| | - Devalina Ray
- Amity Institute of Click Chemistry Research and Studies, Amity University, Sector 125, Noida, Uttar Pradesh, 201313, India.,Amity Institute of Biotechnology, Amity University, Sector 125, Noida, Uttar Pradesh, 201313, India
| | - Hong-Yu Li
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida, Uttar Pradesh, 201313, India.
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Dey DSKK, Gil-Hernández B, Gobre VV, Woschko D, Harmalkar SS, Gayen FR, Saha B, Goswamee RL, Janiak C. Selective recognition and extraction of arsenate by a urea-functionalized tripodal receptor from competitive aqueous media. Dalton Trans 2022; 51:15239-15245. [DOI: 10.1039/d2dt02281h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A second-generation hydrogen bond donor (HBD) anion receptor with an inner amide cavity and an outer urea cavity can selectively and efficiently extract arsenate (AsO43–) from water in the presence...
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Banerjee A, Chowdhury P, Bauri K, Saha B, De P. Inhibition and eradication of bacterial biofilm using polymeric materials. Biomater Sci 2022; 11:11-36. [DOI: 10.1039/d2bm01276f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biofilms, ubiquitous in nature, are three-dimensional complex microbial communities sheathed with a self-secreted extracellular polymeric matrix. Infections caused by these communities have sprouted as serious threats to global healthcare systems...
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31
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Sarma U, Maiti M, Nair A, Bhadange S, Bansode Y, Srivastava A, Saha B, Mukherjee D. Regulation of STAT3 signaling in IFNγ and IL10 pathways and in their cross-talk. Cytokine 2021; 148:155665. [PMID: 34366205 DOI: 10.1016/j.cyto.2021.155665] [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: 03/15/2021] [Revised: 07/20/2021] [Accepted: 07/23/2021] [Indexed: 11/17/2022]
Abstract
The pro-inflammatory IFNγ-STAT1 pathway and anti-inflammatory IL10-STAT3 pathway elicit cellular responses primarily utilizing their canonical STATs. However IL10 mediated STAT1 and IFNγ mediated STAT3 activation is also observed, suggesting crosstalk of these functionally opposing signaling pathways can potentially reshape the canonical dynamics both STATs and alter the expression of their target genes. Herein, we measured the dynamics of STATs in response to different doses of IL10 or IFNγ and in their co-stimulation and employed quantitative modeling to understand the regulatory mechanisms controlling signal responses in individual and co-simulation scenarios. Our experiments show, STAT3 in particular, exhibits a bell-shaped dose-response while treated with IFNγ or IL10 and our model quantiatively captured the dose-dependent dynamics of both the STATs in both pathways. The model next predicted and subsequent experiments validated that STAT3 dynamics would robustly remain IL10 specific when subjected to a co-stimulation of both IFNγ and IL10. Genes common to both pathways also exhibited IL10 specific expression during the co-stimulation. The findings thus uncover anovel feature of the IL10-STAT3 signaling axis during pathway crosstalk. Finally, parameter sampling coupled to information theory based analysis showed that bell-shaped signal-response of STAT3 in both pathways is primarily dependent on receptor concentration whereas robustness of IL10-STAT3 signaling axis in co-stimulation results from the negative regulation of the IFNγ pathway.
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Affiliation(s)
- U Sarma
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India.
| | - M Maiti
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - A Nair
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - S Bhadange
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - Y Bansode
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - A Srivastava
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - B Saha
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India
| | - D Mukherjee
- National Centre for Cell Science, NCCS Complex, Ganeshkhind, SP Pune University Campus, Pune 411007, India.
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Gold KA, Saha B, Rajeeva Pandian NK, Walther BK, Palma JA, Jo J, Cooke JP, Jain A, Gaharwar AK. 3D Bioprinted Multicellular Vascular Models. Adv Healthc Mater 2021; 10:e2101141. [PMID: 34310082 PMCID: PMC9295047 DOI: 10.1002/adhm.202101141] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/13/2021] [Indexed: 02/06/2023]
Abstract
3D bioprinting is an emerging additive manufacturing technique to fabricate constructs for human disease modeling. However, current cell-laden bioinks lack sufficient biocompatibility, printability, and structural stability needed to translate this technology to preclinical and clinical trials. Here, a new class of nanoengineered hydrogel-based cell-laden bioinks is introduced, that can be printed into 3D, anatomically accurate, multicellular blood vessels to recapitulate both the physical and chemical microenvironments of native human vasculature. A remarkably unique characteristic of this bioink is that regardless of cell density, it demonstrates a high printability and ability to protect encapsulated cells against high shear forces in the bioprinting process. 3D bioprinted cells maintain a healthy phenotype and remain viable for nearly one-month post-fabrication. Leveraging these properties, the nanoengineered bioink is printed into 3D cylindrical blood vessels, consisting of living co-culture of endothelial cells and vascular smooth muscle cells, providing the opportunity to model vascular function and pathophysiology. Upon cytokine stimulation and blood perfusion, this 3D bioprinted vessel is able to recapitulate thromboinflammatory responses observed only in advanced in vitro preclinical models or in vivo. Therefore, this 3D bioprinted vessel provides a potential tool to understand vascular disease pathophysiology and assess therapeutics, toxins, or other chemicals.
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Affiliation(s)
- Karli A Gold
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Biswajit Saha
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | | | - Brandon K Walther
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, 77030, USA
| | - Jorge A Palma
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Javier Jo
- Electrical and Computer Engineering, College of Engineering, The University of Oklahoma, Norman, OK, 73019, USA
| | - John P Cooke
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, 77030, USA
| | - Abhishek Jain
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, 77030, USA.,Medical Physiology, College of Medicine, Texas A&M Health Science Center, Bryan, TX, 77807, USA
| | - Akhilesh K Gaharwar
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX, 77843, USA.,Material Science and Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX, 77843, USA
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Saha B, Patra AS, Biswas A, Mukherjee AK, Paul I. Interaction of Grafted Dextrin with a Hematite Surface: Effect of Functional Groups and Molecular Weight. ChemistrySelect 2021. [DOI: 10.1002/slct.202102583] [Citation(s) in RCA: 1] [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] [Indexed: 11/07/2022]
Affiliation(s)
- Biswajit Saha
- Research & Development Tata Steel Limited Jamshedpur 831007 India
| | - Abhay S. Patra
- Research & Development Tata Steel Limited Jamshedpur 831007 India
| | - Arijit Biswas
- Research & Development Tata Steel Limited Jamshedpur 831007 India
| | | | - Indrajit Paul
- Pellet Plant Tata Steel Limited Jamshedpur 831007 India
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34
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Saha B, Mathur T, Tronolone JJ, Chokshi M, Lokhande GK, Selahi A, Gaharwar AK, Afshar-Kharghan V, Sood AK, Bao G, Jain A. Human tumor microenvironment chip evaluates the consequences of platelet extravasation and combinatorial antitumor-antiplatelet therapy in ovarian cancer. Sci Adv 2021; 7:eabg5283. [PMID: 34290095 PMCID: PMC8294767 DOI: 10.1126/sciadv.abg5283] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 06/04/2021] [Indexed: 05/13/2023]
Abstract
Platelets extravasate from the circulation into tumor microenvironment, enable metastasis, and confer resistance to chemotherapy in several cancers. Therefore, arresting tumor-platelet cross-talk with effective and atoxic antiplatelet agents in combination with anticancer drugs may serve as an effective cancer treatment strategy. To test this concept, we create an ovarian tumor microenvironment chip (OTME-Chip) that consists of a platelet-perfused tumor microenvironment and which recapitulates platelet extravasation and its consequences. By including gene-edited tumors and RNA sequencing, this organ-on-chip revealed that platelets and tumors interact through glycoprotein VI (GPVI) and tumor galectin-3 under shear. Last, as proof of principle of a clinical trial, we showed that a GPVI inhibitor, Revacept, impairs metastatic potential and improves chemotherapy. Since GPVI is an antithrombotic target that does not impair hemostasis, it represents a safe cancer therapeutic. We propose that OTME-Chip could be deployed to study other vascular and hematological targets in cancer.
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Affiliation(s)
- Biswajit Saha
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA
| | - Tanmay Mathur
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA
| | - James J Tronolone
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA
| | - Mithil Chokshi
- Department of Bioengineering, George R. Brown School of Engineering, Rice University, Houston, TX 77005, USA
| | - Giriraj K Lokhande
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA
| | - Amirali Selahi
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA
- Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA
- Center for Remote Health Technologies and Systems, Texas A&M University, College Station TX 77840, USA
| | - Vahid Afshar-Kharghan
- Department of Benign Hematology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Gang Bao
- Department of Bioengineering, George R. Brown School of Engineering, Rice University, Houston, TX 77005, USA
| | - Abhishek Jain
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX 77840, USA.
- Department of Medical Physiology, College of Medicine, Texas A&M Health Science Center, Bryan, TX 77807, USA
- Department of Cardiovascular Sciences, Houston Methodist Academic Institute, Houston, TX 77030, USA
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Affiliation(s)
- Biswajit Saha
- Catalysis and Chemical Reaction Engineering Laboratories University of Saskatchewan Saskatoon Saskatchewan Canada
| | - Sundaramurthy Vedachalam
- Catalysis and Chemical Reaction Engineering Laboratories University of Saskatchewan Saskatoon Saskatchewan Canada
| | - Ajay K. Dalai
- Catalysis and Chemical Reaction Engineering Laboratories University of Saskatchewan Saskatoon Saskatchewan Canada
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Kumar V, Sachdeva C, Waidha K, Sharma S, Ray D, Kumar Kaushik N, Saha B. In Vitro and In Silico Anti‐plasmodial Evaluation of Newly Synthesized β‐Carboline Derivatives. ChemistrySelect 2021. [DOI: 10.1002/slct.202101355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vipin Kumar
- Amity Institute of Click Chemistry Research and Studies Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Cheryl Sachdeva
- Amity Institute of Virology and Immunology Institution Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Kamran Waidha
- Amity Institute of Biotechnology Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Sunil Sharma
- Chemical Engineering Department National Tsing Hua University Hsinchu Taiwan 30013
| | - Devalina Ray
- Amity Institute of Biotechnology Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Naveen Kumar Kaushik
- Amity Institute of Virology and Immunology Institution Amity University Sector 125 Noida 201313, Uttar Pradesh India
| | - Biswajit Saha
- Amity Institute of Biotechnology Amity University Sector 125 Noida 201313, Uttar Pradesh India
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Saha B, Patra AS, Mukherjee AK. Insights on the initial stages of carbonization of sub-bituminous coal. J Mol Graph Model 2021; 106:107868. [PMID: 34015578 DOI: 10.1016/j.jmgm.2021.107868] [Citation(s) in RCA: 3] [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: 01/06/2021] [Revised: 02/12/2021] [Accepted: 02/15/2021] [Indexed: 11/25/2022]
Abstract
Detailed studies were carried out on the initial stages of carbonization of sub-bituminous coal using reactive force field (ReaxFF) molecular dynamics simulations. Evolution of different gaseous species during carbonization were analyzed at different temperatures and densities. Elementary reactions were identified leading to the formation of small gaseous species. Cleavage of homolytic O-H bond was found to be the first step of sub-bituminous coal carbonization. CH4 formed mainly due to reaction of ·CH3 with hydrogen radical/hydrogen abstraction. Among others, C9HmOn radicals were the most abundant species at any simulations condition considered here, where m = 9, 8 or 7 and n = 1, 2 or 3. Bond dissociation energy (BDE) of the identified reactions decreased by ∼3.0 kcal/mol for endothermic reactions and increased by ∼3.0 kcal/mol for exothermic due to change in enthalpy at higher temperature. It was observed that the formation of 5-membered carbon only rings and sp-hybridized carbon species played crucial role in the subsequent growth. The results agree with available experimental observations and computational studies. This work provides new insights on the carbonization mechanism of sub-bituminous coal.
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Affiliation(s)
- Biswajit Saha
- Research & Development, Tata Steel Limited, Jamshedpur, 831007, India.
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Gayen FR, Ali AA, Bora D, Roy S, Saha S, Saikia L, Goswamee RL, Saha B. Correction: A ferrocene functionalized Schiff base containing Cu(II) complex: synthesis, characterization and parts-per-million level catalysis for azide alkyne cycloaddition. Dalton Trans 2021; 50:6735. [PMID: 33960348 DOI: 10.1039/d1dt90072b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for 'A ferrocene functionalized Schiff base containing Cu(ii) complex: synthesis, characterization and parts-per-million level catalysis for azide alkyne cycloaddition' by Firdaus Rahaman Gayen et al., Dalton Trans., 2020, 49, 6578-6586, DOI: 10.1039/d0dt00915f.
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Affiliation(s)
- Firdaus Rahaman Gayen
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
| | - Abdul Aziz Ali
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India.
| | - Debashree Bora
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
| | - Saptarshi Roy
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India.
| | - Supriya Saha
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India and Advanced Computation Data Sciences Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India
| | - Lakshi Saikia
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
| | - Rajib Lochan Goswamee
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
| | - Biswajit Saha
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam - 785006, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
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Waidha K, Saxena A, Kumar P, Sharma S, Ray D, Saha B. Design and identification of novel annomontine analogues against SARS-CoV-2: An in-silico approach. Heliyon 2021; 7:e06657. [PMID: 33824915 PMCID: PMC8017494 DOI: 10.1016/j.heliyon.2021.e06657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/20/2020] [Accepted: 03/29/2021] [Indexed: 12/27/2022] Open
Abstract
AIMS COVID-19 has currently emerged as the major global pandemic affecting the lives of people across the globe. It broke out from Wuhan Province of China, first reported to WHO on 31st December 2019 as "Pneumonia of unknown cause". Over time more people were infected with this virus, and the only tactic to ensure safety was to take precautionary measures due to the lack of any effective treatment or vaccines. As a result of unavailability of desired efficacy for previously repurposed drugs, exploring novel scaffolds against the virus has become the need of the hour. MAIN METHODS In the present study, 23 new annomontine analogues were designed representing β-Carboline based scaffolds. A hypothesis on its role as an effective ligand was laid for target-specific binding in SARS-CoV-2. These molecules were used for molecular docking analysis against the multiple possible drug targets using the Maestro Interface. To ensure the drug safety of these molecules ADME/Tox analysis was also performed. KEY FINDINGS The molecular docking analysis of the 23 novel molecules indicated the efficiency of these derivates against COVID-19. The efficiency of molecules was computed by the summation of the docking score against each target defined as LigE Score and compared against Hydroxycholoquine as a standard. Based on the docking score, the majority of the annomontine derivatives were found to have increased binding affinity with targets as compared to hydroxycholoquine. SIGNIFICANCE Due to the lack of efficiency, effectiveness, and failure of already repurposed drugs against the COVID-19, the exploration of the novel scaffold that can act as effective treatment is much needed. The current study hence emphasizes the potential of Annomontine based - β- Carboline derivatives as a potential drug candidate against COVID-19.
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Affiliation(s)
- Kamran Waidha
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, 125, 201301, India
| | - Anjali Saxena
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, 125, 201301, India
| | - Prashant Kumar
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, 125, 201301, India
| | - Sunil Sharma
- Chemical Engineering Department, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Devalina Ray
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, 125, 201301, India
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, 125, 201301, India
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Chauhan M, Saxena A, Saha B. An insight in anti-malarial potential of indole scaffold: A review. Eur J Med Chem 2021; 218:113400. [PMID: 33823394 DOI: 10.1016/j.ejmech.2021.113400] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 10/21/2022]
Abstract
Malaria is a major parasitic disease in tropical and sub-tropical regions. Pertaining to the sustaining resistance in malarial parasite against the available drugs, novel treatment options are the need of the hour. In this resolve recently, focus has shifted to finding the natural alternatives that possess anti-plasmodial activity for combatting malaria. Drawing on the text written in ancient scriptures and Ayurveda, natural compounds are now being screened for their therapeutic properties. Indole is one such natural compound, present in all living organisms, it displays a range of therapeutic activities including anticancer, anti-inflammatory, antimalarial etc. In this review, we have discussed various indole scaffold as well as the semi-synthetic drugs containing indole moiety that have been synthesized for malaria treatment.
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Affiliation(s)
- Mehak Chauhan
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
| | - Anjali Saxena
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
| | - Biswajit Saha
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India.
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41
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Kumari S, Saha B, Guha D, Sengupta S. Sequential Post-Synthetic Modification and Evaluation of Catalytic Activity of Hierarchically Porous Sulfated Geopolymer in the Oxidative Desulfurization of Dibenzothiophene. Catal Surv Asia 2021. [DOI: 10.1007/s10563-021-09328-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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43
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Saha B, Patra AS, Mukherjee AK, Paul I. Interaction and thermal stability of carboxymethyl cellulose on α-Fe 2O 3(001) surface: ReaxFF molecular dynamics simulations study. J Mol Graph Model 2021; 102:107787. [PMID: 33142262 DOI: 10.1016/j.jmgm.2020.107787] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 09/26/2020] [Revised: 10/20/2020] [Accepted: 10/20/2020] [Indexed: 01/11/2023]
Abstract
Reactive (ReaxFF) molecular dynamic simulations were performed to elucidate the nature of interaction between hematite and carboxymethyl cellulose (CMC) considering effect of moisture and temperature. Simulations showed that the presence of moisture prohibited CMC to interact directly with hematite surface. However, the moisture helps to disperse CMC along the hematite surface thus maximizing the interaction. In dry condition, it was found that the negatively charged oxygen present in the functional groups and in CMC backbone (-CH2OCH2-) take part to form chemical bond with the positively charged surface Fe. The bonding interaction with polymer back bone is a new finding from this simulation. The binding energy estimated as -56.2 kcal/mol clearly indicates chemisorption with bond length ∼2.00 Å. Upon heating up the complex in presence of atmospheric oxygen it was observed that CMC decomposed at high temperature rather than desorbed from the surface. This study clearly shows that CMC is a suitable binder for iron ore pelletization and will pave the way for more rationale design of organic binders.
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Affiliation(s)
- Biswajit Saha
- Research & Development, Tata Steel Limited, Jamshedpur, 831007, India.
| | | | | | - Indrajit Paul
- Pellet Plant, Tata Steel Limited, Jamshedpur, 831007, India
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Das P, Nisa S, Debnath A, Saha B. Enhanced adsorptive removal of toxic anionic dye by novel magnetic polymeric nanocomposite: optimization of process parameters. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1845958] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Payel Das
- Department of Civil Engineering, National Institute of Technology Agartala, Jirania, West Tripura, India
| | - Saimatun Nisa
- Department of Civil Engineering, National Institute of Technology Agartala, Jirania, West Tripura, India
| | - Animesh Debnath
- Department of Civil Engineering, National Institute of Technology Agartala, Jirania, West Tripura, India
| | - Biswajit Saha
- Department of Physics, National Institute of Technology Agartala, Jirania, West Tripura, India
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Saha B, Gordievskaya YD, De P, Kramarenko EY. Unusual Nanostructured Morphologies Enabled by Interpolyelectrolyte Complexation of Polyions Bearing Incompatible Nonionic Segments. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02230] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Biswajit Saha
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, Mohanpur 741246, West Bengal, India
| | - Yulia D. Gordievskaya
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow 119991, Russia
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, Mohanpur 741246, West Bengal, India
| | - Elena Yu. Kramarenko
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow 119991, Russia
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Saha B, Swain D, Borgohain P, Rout GR, Koyama H, Panda SK. Enhanced exudation of malate in the rhizosphere due to AtALMT1 overexpression in blackgram (Vigna mungo L.) confers increased aluminium tolerance. Plant Biol (Stuttg) 2020; 22:701-708. [PMID: 32174006 DOI: 10.1111/plb.13112] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
Worldwide, 50% of soil is acidic, which induces aluminium (Al) toxicity in plants, as the phyto-availability of Al3+ increases in acidic soil. Plants responds to Al3+ toxicity by exuding organic acids into the rhizosphere. The organic acid responsible for Al3+ stress response varies from species to species, which in the case of blackgram (Vigna mungo L.) is citrate. In blackgram, an Arabidopsis malate transporter, AtALMT1, was overexpressed with the motive of inducing enhanced exudation of malate. Transgenics were generated using cotyledon node explants through Agrobacterium tumefaciens-mediated transformation. The putative transgenics were initially screened by AtALMT1-specific genomic DNA PCR, followed by quantitative PCR. Two independent transgenic events were identified and functionally characterized in the T3 generation. The transgenic lines, Line 1 and 2, showed better root growth, relative water content and chlorophyll content under Al3+ stress. Both lines also accounted for less oxidative damage, due to reduced accumulation of ROS molecules. Photosynthetic efficiency, as measured in terms of Fv /Fm , NPQ and Y(II), increased when compared to the wild type (WT). Relative expression of genes (VmSTOP1, VmALS3, VmMATE) responsible for Al3+ stress response in blackgram showed that overexpression of a malate transporter did not have any effect on their expression. Malate exudation increased whereas citrate exudation did not show any divergence from the WT. A pot stress assay found that the transgenics showed better adaptation to acidic soil. This report demonstrates that the overexpression of a malate transporter in a non-malate exuding species improves adaptation to Al3+ toxicity in acidic soil without effecting its stress response mechanism.
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Affiliation(s)
- B Saha
- Plant Molecular Biotechnology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, India
| | - D Swain
- Department of Agricultural Biotechnology, Orissa University of Agricultural Technology, Bhubaneswar, India
| | - P Borgohain
- Plant Molecular Biotechnology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, India
| | - G R Rout
- Department of Agricultural Biotechnology, Orissa University of Agricultural Technology, Bhubaneswar, India
| | - H Koyama
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - S K Panda
- Plant Molecular Biotechnology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, India
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Deb A, Debnath A, Saha B. Sono-assisted enhanced adsorption of eriochrome Black-T dye onto a novel polymeric nanocomposite: kinetic, isotherm, and response surface methodology optimization. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1775093] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Akash Deb
- Department of Civil Engineering, National Institute of Technology Agartala, Agartala, Tripura, India
| | - Animesh Debnath
- Department of Civil Engineering, National Institute of Technology Agartala, Agartala, Tripura, India
| | - Biswajit Saha
- Department of Physics, National Institute of Technology Agartala, Agartala, Tripura, India
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Patidar A, Selvaraj S, Chauhan P, Guzman CA, Ebensen T, Sarkar A, Chattopadhyay D, Saha B. Peptidoglycan-treated tumor antigen-pulsed dendritic cells impart complete resistance against tumor rechallenge. Clin Exp Immunol 2020; 201:279-288. [PMID: 32443171 DOI: 10.1111/cei.13468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 05/12/2020] [Accepted: 05/12/2020] [Indexed: 12/28/2022] Open
Abstract
Solid tumors elicit suppressive T cell responses which impair antigen-presenting cell (APC) functions. Such immune suppression results in uncontrolled tumor growth and mortality. Addressing APC dysfunction, dendritic cell (DC)-mediated anti-tumor vaccination was extensively investigated in both mice and humans. These studies never achieved full resistance to tumor relapse. Herein, we describe a repetitive RM-1 murine tumor rechallenge model for recurrence in humans. Using this newly developed model, we show that priming with tumor antigen-pulsed, Toll-like receptor (TLR)2 ligand-activated DCs elicits a host-protective anti-tumor immune response in C57BL/6 mice. Upon stimulation with the TLR2 ligand peptidoglycan (PGN), the tumor antigen-pulsed DCs induce complete resistance to repetitive tumor challenges. Intra-tumoral injection of PGN reduces tumor growth. The tumor resistance is accompanied by increased expression of interleukin (IL)-27, T-box transcription factor TBX21 (T-bet), IL-12, tumor necrosis factor (TNF)-α and interferon (IFN)-γ, along with heightened cytotoxic T lymphocyte (CTL) functions. Mice primed four times with PGN-stimulated tumor antigen-pulsed DCs remain entirely resistant to repeat challenges with RM-1 tumor cells, suggesting complete prevention of relapse and recurrence of tumor. Adoptive transfer of T cells from these mice, which were fully protected from RM-1 rechallenge, confers anti-tumor immunity to syngeneic naive recipient mice upon RM-1 challenge. These observations indicate that PGN-activated DCs induce robust host-protective anti-tumor T cells that completely resist tumor growth and recurrence.
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Affiliation(s)
- A Patidar
- National Centre for Cell Science, Pune, India
| | - S Selvaraj
- National Centre for Cell Science, Pune, India
| | - P Chauhan
- National Centre for Cell Science, Pune, India
| | - C A Guzman
- Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - T Ebensen
- Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - A Sarkar
- Trident Academy of Creative Technology, Bhubaneswar, India
| | | | - B Saha
- National Centre for Cell Science, Pune, India.,Trident Academy of Creative Technology, Bhubaneswar, India.,National Institute of Traditional Medicine, Belagavi, India
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Das P, Debnath A, Saha B. Ultrasound‐assisted enhanced and rapid uptake of anionic dyes from the binary system onto MnFe
2
O
4
/polyaniline nanocomposite at neutral pH. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5711] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Payel Das
- Department of Civil Engineering National Institute of Technology Agartala Jirania West Tripura 799046 India
| | - Animesh Debnath
- Department of Civil Engineering National Institute of Technology Agartala Jirania West Tripura 799046 India
| | - Biswajit Saha
- Department of Physics National Institute of Technology Agartala Jirania West Tripura 799046 India
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Goswami KG, Saha B, De P. Alternating copolymers with glycyl-glycine and alanyl-alanine side-chain pendants: synthesis, characterization and solution properties. Journal of Macromolecular Science, Part A 2020. [DOI: 10.1080/10601325.2020.1759433] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Krishna Gopal Goswami
- Department of Chemical Sciences, Polymer Research Centre and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research Kolkata, Nadia, India
| | - Biswajit Saha
- Department of Chemical Sciences, Polymer Research Centre and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research Kolkata, Nadia, India
| | - Priyadarsi De
- Department of Chemical Sciences, Polymer Research Centre and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research Kolkata, Nadia, India
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