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Mishra S, Budania Y, Tyagi A, Pratap Singh S, Kumar P, Singh S. Copper Oxide Anchored Carbon Nanofibers: A Versatile Platform for Multiplex Detection of Antibiotics, Heavy Metals and Pesticides. Chem Asian J 2024; 19:e202400241. [PMID: 38441388 DOI: 10.1002/asia.202400241] [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] [Received: 03/04/2024] [Indexed: 05/18/2024]
Abstract
Electrochemical sensors offer promising prospects for real-time pollutant monitoring. In this study, copper oxide-dispersed graphitic carbon nanofibers (CuO-CNFs) grown via chemical vapour deposition were employed as a robust platform for detecting a variety of environmental pollutants. This array-based sensor adeptly identifies three different classes of analytes, i. e., antibiotics (chloramphenicol (CP) and tylosin tartrate (TT)), heavy metals (cadmium (Cd) and lead (Pb)), and pesticides (quinalphos (QP) and imidacloprid (IP)). Electron collection is facilitated by a glassy carbon electrode, while various physico-electrochemical methods delve into the properties of CuO-CNFs. The CuO-CNF-modified GCE array rapidly discerns (<15 sec) a broad linear range: 1-20 ppm for CP, 1-13.33 ppm for TT, 0.66-11.66 ppm for Cd, 20-33.33 ppm for Pb, 1.6-11.6 ppm for QP, and 5-25 ppm for IP, boasting quantification limits of 1.0, 1.0, 0.66, 20.0, 1.6, and 5.0 ppm for CP, TT, Cd, Pb, QP, and IP, respectively. Notably, this sensor achieves simultaneous identification of mixed analytes, including CP and TT, Cd and Pb, and QP and IP, within real tap water. Furthermore, the electrochemical sensor exhibits robustness; heightened sensitivity, selectivity, and stability; a swift response; and impressive reproducibility in detecting CP, TT, Cd, Pb, QP, and IP within aqueous samples. Consequently, this array-based electrochemical sensor has emerged as a rapid and simultaneous detection tool for diverse pollutant residues in surface and groundwater samples.
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Affiliation(s)
- Smriti Mishra
- Industrial waste utilization, nano- and biomaterial division, CSIR- Advanced Materials and Processes Research Institute (CSIR-AMPRI), Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
| | - Yashmeen Budania
- Industrial waste utilization, nano- and biomaterial division, CSIR- Advanced Materials and Processes Research Institute (CSIR-AMPRI), Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
| | - Ankit Tyagi
- Department of Chemical Engineering, Indian Institute of Technology, Jammu, Jagti, Nagrota, Jammu & Kashmir, 181221, India
| | - Sheelendra Pratap Singh
- Pesticide toxicology laboratory & regulatory toxicology group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
- Analytical Chemistry Laboratory, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | - Pradip Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Green engineered materials and additive manufacturing, Council of Scientific and Industrial Research- Advanced Materials and Processes Research Institute, Bhopal, 462026, India
| | - Shiv Singh
- Industrial waste utilization, nano- and biomaterial division, CSIR- Advanced Materials and Processes Research Institute (CSIR-AMPRI), Hoshangabad Road, Bhopal, Madhya Pradesh, 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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2
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Tanga S, Hota A, Karmakar A, Banerjee P, Maji B. Cysteine-independent CRISPR-Associated Protein Labeling for Presentation and Co-delivery of Molecules Toward Genetic and Epigenetic Regulations. Chembiochem 2024; 25:e202400149. [PMID: 38530114 DOI: 10.1002/cbic.202400149] [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] [Received: 02/18/2024] [Revised: 03/20/2024] [Accepted: 03/26/2024] [Indexed: 03/27/2024]
Abstract
Labeling of CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) associated proteins (Cas) remains an immense challenge for their genome engineering applications. To date, cysteine-mediated bioconjugation is the most efficient strategy for labeling Cas proteins. However, introducing a cysteine residue in the protein at the right place might be challenging without perturbing the enzymatic activity. We report a method that does not require cysteine residues for small molecule presentation on the CRISPR-associated protein SpCas9 for in vitro protein detection, probing cellular protein expression, and nuclear co-delivery of molecules in mammalian cells. We repurposed a simple protein purification tag His6 peptide for non-covalent labeling of molecules on the CRISPR enzyme SpCas9. The small molecule labeling enabled us to rapidly detect SpCas9 in a biochemical assay. We demonstrate that small molecule labeling can be utilized for probing bacterial protein expression in realtime. Furthermore, we coupled SpCas9's nuclear-targeting ability in co-delivering the presenting small molecules to the mammalian cell nucleus for prospective genome engineering applications. Furthermore, we demonstrate that the method can be generalized to label oligonucleotides for multiplexing CRISPR-based genome editing and template-mediated DNA repair applications. This work paves the way for genomic loci-specific bioactive small molecule and oligonucleotide co-delivery toward genetic and epigenetic regulations.
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Affiliation(s)
- Sadiya Tanga
- Ashoka University, Department of Chemistry, Rajiv Gandhi Education City, Sonipat, Haryana, 131029
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
| | - Arpita Hota
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
| | - Arkadeep Karmakar
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
| | - Paramita Banerjee
- S N Bose National Centre for Basic Science, JD Block, Sector 3, Bidhannagar, Kolkata, 700106, West Bengal
| | - Basudeb Maji
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
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3
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Kumar A, Kaushal R, Sharma H, Sharma K, Menon MB, P V. Mapping of long stretches of highly conserved sequences in over 6 million SARS-CoV-2 genomes. Brief Funct Genomics 2024; 23:256-264. [PMID: 37461194 DOI: 10.1093/bfgp/elad027] [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] [Received: 01/27/2023] [Revised: 06/15/2023] [Accepted: 06/26/2023] [Indexed: 05/18/2024] Open
Abstract
We identified 11 conserved stretches in over 6.3 million SARS-CoV-2 genomes including all the major variants of concerns. Each conserved stretch is ≥100 nucleotides in length with ≥99.9% conservation at each nucleotide position. Interestingly, six of the eight conserved stretches in ORF1ab overlapped significantly with well-folded experimentally verified RNA secondary structures. Furthermore, two of the conserved stretches were mapped to regions within the S2-subunit that undergo dynamic structural rearrangements during viral fusion. In addition, the conserved stretches were significantly depleted for zinc-finger antiviral protein (ZAP) binding sites, which facilitated the recognition and degradation of viral RNA. These highly conserved stretches in the SARS-CoV-2 genome were poorly conserved at the nucleotide level among closely related β-coronaviruses, thus representing ideal targets for highly specific and discriminatory diagnostic assays. Our findings highlight the role of structural constraints at both RNA and protein levels that contribute to the sequence conservation of specific genomic regions in SARS-CoV-2.
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Affiliation(s)
- Akhil Kumar
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Rishika Kaushal
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Himanshi Sharma
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Khushboo Sharma
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Manoj B Menon
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
| | - Vivekanandan P
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, New Delhi, India
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Dahiya P, Kumari S, Behl M, Kashyap A, Kumari D, Thakur K, Devi M, Kumari N, Kaushik N, Walia A, Bhatt AK, Bhatia RK. Guardians of the Gut: Harnessing the Power of Probiotic Microbiota and Their Exopolysaccharides to Mitigate Heavy Metal Toxicity in Human for Better Health. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10281-9. [PMID: 38733461 DOI: 10.1007/s12602-024-10281-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2024] [Indexed: 05/13/2024]
Abstract
Heavy metal pollution is a significant global health concern, posing risks to both the environment and human health. Exposure to heavy metals happens through various channels like contaminated water, food, air, and workplaces, resulting in severe health implications. Heavy metals also disrupt the gut's microbial balance, leading to dysbiosis characterized by a decrease in beneficial microorganisms and proliferation in harmful ones, ultimately exacerbating health problems. Probiotic microorganisms have demonstrated their ability to adsorb and sequester heavy metals, while their exopolysaccharides (EPS) exhibit chelating properties, aiding in mitigating heavy metal toxicity. These beneficial microorganisms aid in restoring gut integrity through processes like biosorption, bioaccumulation, and biotransformation of heavy metals. Incorporating probiotic strains with high affinity for heavy metals into functional foods and supplements presents a practical approach to mitigating heavy metal toxicity while enhancing gut health. Utilizing probiotic microbiota and their exopolysaccharides to address heavy metal toxicity offers a novel method for improving human health through modulation of the gut microbiome. By combining probiotics and exopolysaccharides, a distinctive strategy emerges for mitigating heavy metal toxicity, highlighting promising avenues for therapeutic interventions and health improvements. Further exploration in this domain could lead to groundbreaking therapies and preventive measures, underscoring probiotic microbiota and exopolysaccharides as natural and environmentally friendly solutions to heavy metal toxicity. This, in turn, could enhance public health by safeguarding the gut from environmental contaminants.
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Affiliation(s)
- Pushpak Dahiya
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Sangeeta Kumari
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Manya Behl
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Aakash Kashyap
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Deeksha Kumari
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Kalpana Thakur
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Mamta Devi
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Neelam Kumari
- Department of Biosciences, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Neelam Kaushik
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Abhishek Walia
- Department of Microbiology, College of Basic Sciences, CSK HPKV, Palampur, HP, 176062, India
| | - Arvind Kumar Bhatt
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India
| | - Ravi Kant Bhatia
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, Himachal Pradesh, India.
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Pradhan SR, Prasad CK, Das M, Srinivasan A. The (o-p-o)-Terphenyl Embedded Calix[2]phyrin(2.2.1.1.1) and Its Cu(II) Complex. Chem Asian J 2024; 19:e202400135. [PMID: 38503696 DOI: 10.1002/asia.202400135] [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: 02/07/2024] [Revised: 03/02/2024] [Accepted: 03/19/2024] [Indexed: 03/21/2024]
Abstract
The introduction of a higher arene unit as a structural motif is unprecedented in calixphyrin chemistry. Herein, the syntheses, spectral and structural characterization of heretofore anonymous terphenylene unit (o-p-o) incorporated calixphyrin with fused sp2 meso carbons is reported. The explicitly tailored macrocyclic core is utilized to stabilize the Cu(II) metal ion. The molecular structures of the calixbenziphyrin and Cu(II) complex are unambiguously confirmed by single-crystal X-ray analysis. Moreover, theoretical supports uphold experimental conclusions.
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Affiliation(s)
- Sourav Ranjan Pradhan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of, Homi Bhabha National Institute, Bhubaneswar, 752050, Odisha, India
| | - Chetan Kumar Prasad
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of, Homi Bhabha National Institute, Bhubaneswar, 752050, Odisha, India
| | - Mainak Das
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - A Srinivasan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of, Homi Bhabha National Institute, Bhubaneswar, 752050, Odisha, India
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Singh J, Errandonea D, Kanchana V, Vaitheeswaran G. Deep Earth Chronicles: High-Pressure Investigation of Phenakite Mineral Be 2SiO 4. Chemphyschem 2024; 25:e202300901. [PMID: 38345196 DOI: 10.1002/cphc.202300901] [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: 11/27/2023] [Revised: 01/28/2024] [Indexed: 03/07/2024]
Abstract
Beryllium silicate, recognized as the mineral phenakite (Be2SiO4), is a prevalent constituent in Earth's upper mantle. This study employs density-functional theory (DFT) calculations to explore the structural, mechanical, dynamical, thermodynamic, and electronic characteristics of this compound under both ambient and high-pressure conditions. Under ideal conditions, the DFT calculations align closely with experimental findings, confirming the mechanical and dynamical stability of the crystalline structure. Phenakite is characterized as an indirect band gap insulator, possessing an estimated band gap of 7.83 eV. Remarkably, oxygen states make a substantial contribution to both the upper limit of the valence band and the lower limit of the conduction band. We delved into the thermodynamic properties of the compound, including coefficients of thermal expansion, free energy, entropy, heat capacity, and the Gruneisen parameter across different temperatures. Our findings suggest that Be2SiO4 displays an isotropic behavior based on estimated anisotropic factors. Interestingly, our investigation revealed that, under pressure, the compression of phenakite is not significantly affected by bond angle bending.
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Affiliation(s)
- Jaspreet Singh
- Department of Physics, Indian Institute of Technology Hyderabad Kandi, 502285, Sangareddy, Telangana, India
| | - Daniel Errandonea
- Departamento de Fisica Aplicada-ICMUV-MALTA Consolider Team, Universidad de Valencia, C/Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - Venkatakrishnan Kanchana
- Department of Physics, Indian Institute of Technology Hyderabad Kandi, 502285, Sangareddy, Telangana, India
| | - Ganapathy Vaitheeswaran
- School of Physics, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad, 500046, Telengana, India
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7
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Kumari M, Kumar R. Functional trait correlation network and proteomic analysis reveal multifactorial adaptation mechanisms to a climatic gradient associated with high altitude in the Himalayan region. Plant Cell Environ 2024; 47:1556-1574. [PMID: 38268334 DOI: 10.1111/pce.14830] [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] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 01/26/2024]
Abstract
Globally occurring changes in environmental conditions necessitate extending our knowledge of the system-level mechanisms underlying plant adaptation to multifactorial stress conditions or stress combinations. This is crucial for designing new strategies to maintain plant performance under simultaneous abiotic pressure. Here, we conducted our study at Rohtang Pass and sampled Picrorhiza kurroa leaves along high-altitude gradient (3400, 3800 and 4100 meters above sea level) in the western Himalayas. The results showed the functional traits associated with morpho-anatomical structures and eco-physiological performances are highly variable. The air temperature and relative humidity represent dominant environmental factors among others that significantly regulate plant's physiological performance by adjusting the functional traits in altitude-specific manner. A trait coordination network is developed among significantly altered plant functional traits, which reveals high-altitude associated trait-based adaptation. Moreover, it reveals leaf area shows the highest degree, while photochemical quenching reflects the weighted degree of centrality in the network. Proteomic analysis reveals various stress-responsive proteins, including antioxidants were accumulated to deal with combined stress factors. Furthermore, a high-altitudinal protein interaction network unravels key players of alpine plant adaptation processes. Altogether, these systems demonstrate a complex molecular interaction web extending the current knowledge of high-altitudinal alpine plant adaptation, particularly in an endangered medicinal herb, P. kurroa.
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Affiliation(s)
- Manglesh Kumari
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Rajiv Kumar
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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8
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Dolai A, Bhunia S, Jana SK, Bera S, Mandal S, Samanta S. Photoisomerization and Light-Controlled Antibacterial Activity of Fluoroquinolone-Azoisoxazole Hybrids. Chembiochem 2024; 25:e202300851. [PMID: 38409655 DOI: 10.1002/cbic.202300851] [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] [Received: 12/19/2023] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 02/28/2024]
Abstract
Photopharmacology holds a huge untapped potential to locally treat diseases involving photoswitchable drugs via the elimination of drugs' off-target effects. The growth of this field has created a pressing demand to develop such light-active drugs. We explored the potential for creating photoswitchable antibiotic hybrids by attaching pharmacophores norfloxacin/ciprofloxacin and azoisoxazole (photoswitch). All compounds exhibited a moderate to a high degree of bidirectional photoisomerization, long thermal cis half-lives, and impressive photoresistance. Gram-negative pathogens were found to be insensitive to these hybrids, while against Gram-positive pathogens, all hybrids in their trans states exhibited antibacterial activity that is comparable to that of the parent drugs. Notably, the toxicity of the irradiated hybrid 6 was found to be 2-fold lower than the nonirradiated trans isomer, indicating that the pre-inactivated cis-enriched drug can be employed for the site-specific treatment of bacterial infection using light, which could potentially eliminate the unwanted exposure of toxic antibiotics to both beneficial and untargeted harmful microbes in our body. Molecular docking revealed different binding affinity of the cis and trans isomers with the topoisomerase IV enzyme, due to their different shapes.
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Affiliation(s)
- Anirban Dolai
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata, 700009, West Bengal, India
| | - Supriya Bhunia
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata, 700009, West Bengal, India
| | - Santosh Kumar Jana
- Department of Microbiology, University of Calcutta, 35-Ballygunge Circular Road, Kolkata, 700019, West Bengal, India
| | - Satyajit Bera
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata, 700009, West Bengal, India
| | - Sukhendu Mandal
- Department of Microbiology, University of Calcutta, 35-Ballygunge Circular Road, Kolkata, 700019, West Bengal, India
| | - Subhas Samanta
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata, 700009, West Bengal, India
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Swain N, Sharma S, Maitra R, Saxena D, Kautu A, Singh R, Kesharwani K, Chopra S, Joshi KB. Antimicrobial peptide mimetic minimalistic approach leads to very short peptide amphiphiles-gold nanostructures for potent antibacterial activity. ChemMedChem 2024; 19:e202300576. [PMID: 38301146 DOI: 10.1002/cmdc.202300576] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/03/2024]
Abstract
Strategically controlling concentrations of lipid-conjugated L-tryptophan (vsPA) guides the self-assembly of nanostructures, transitioning from nanorods to fibres and culminating in spherical shapes. The resulting Peptide-Au hybrids, exhibiting size-controlled 1D, 2D, and 3D nanostructures, show potential in antibacterial applications. Their high biocompatibility, favourable surface area-to-volume ratio, and plasmonic properties contribute to their effectiveness against clinically relevant bacteria. This controlled approach not only yields diverse nanostructures but also holds promise for applications in antibacterial therapeutics.
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Affiliation(s)
- Narayan Swain
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Shruti Sharma
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Rahul Maitra
- Department of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Jankipuram Extension, Lucknow, India
| | - Deepanshi Saxena
- Department of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Jankipuram Extension, Lucknow, India
| | - Aanand Kautu
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Ramesh Singh
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
- Current address: Colorado State University USA
| | - Khushboo Kesharwani
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Sidharth Chopra
- Department of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Jankipuram Extension, Lucknow, India
- AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Khashti Ballabh Joshi
- Department of Chemistry, School of Chemical Science and Technology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
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10
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Arora S, Gupta P. Modelling on a Biomimetic [Cu-O-Cu] 2+-mediated Methane-to-Methanol Conversion Unveils the Site for Methane Activation. Chem Asian J 2024:e202400282. [PMID: 38627954 DOI: 10.1002/asia.202400282] [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: 03/13/2024] [Revised: 04/08/2024] [Indexed: 05/23/2024]
Abstract
The Cu-O-Cu core exhibits methane-to-methanol conversion, mirroring the reactivity of the copper-containing enzyme pMMO. Herein, we computationally examined the reactivity of a biomimetic Cu-O-Cu core towards methane-to-methanol conversion. The oxygen atom of the Cu-O-Cu core abstracts hydrogen present in the C-H bond of methane. The spin density at the bridging oxygen helps to abstract hydrogen from the C-H bond. We modulated the spin density of the bridging oxygen by substituting only a single copper atom of the Cu-O-Cu core by metals (M) such as Fe, Co, and Ag. These substitutions result in bimetallic [Cu-O-M]2+ models. We observed that the energy barriers for the C-H activation step and the subsequent rebound step vary with the metal M. [Cu-O-Ag]2+ exhibits the highest reactivity for M2M conversion, while [Cu-O-Fe]2+ displays the lowest reactivity. To understand the different reactivity of these models towards M2M conversion, we employed distortion-interaction analysis, orbital analysis, spin density analysis, and quantum theory of atoms in molecules analysis. Orbital analysis reveals that all four adducts follow a hydrogen atom transfer mechanism for C-H activation. Further, spin density analysis reveals that a higher spin density on the bridging oxygen leads to a lower C-H activation barrier.
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Affiliation(s)
- Sumangla Arora
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Puneet Gupta
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
- Center for Sustainable Energy, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
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11
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Zeußel L, Chowdhary S, Wu H, Kumar V, Singh S. Sustainable Harnessing of Waste Polycarbonate for Synthesizing Activated Furans to Generate Stenhouse Adducts on Polymer Surface. Chem Asian J 2024:e202400369. [PMID: 38595045 DOI: 10.1002/asia.202400369] [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: 04/02/2024] [Accepted: 04/09/2024] [Indexed: 04/11/2024]
Abstract
Plastics are versatile materials, offering lightweight, durable, and affordable solutions across various industries. However, their non-degradable nature poses challenges by end of their life. This study presented an innovative carbonyl extraction method to utilize waste poly(bisphenol A carbonate) (PC) as reaction precursor to synthesis of activated furan as precursor for photoswitchable Stenhouse adducts. This innovative chemical strategy not only generated N,N'-functionalized barbiturates but also provided an eco-friendly and cost-effective alternative to traditional synthesis methods. The method presented hereby not only promotes sustainability by repurposing waste polycarbonate as carbonyl equivalent under green conditions but also yielded reusable bisphenol A (BPA). Furthermore, the derived activated furans exhibited their functionality by forming colored donor-acceptor Stenhouse adducts (DASAs) on aminated polymer surfaces. This work demonstrated a transition from a linear plastics economy toward a circular one, highlighting the potential of plastic waste as a resource for creating materials with improved properties.
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Affiliation(s)
- Lisa Zeußel
- Research Group Bioorganic Chemistry of Bioactive Surfaces, Institute of Chemistry and Biotechnology, Prof-Schmidt-Straße 26, 98693, Ilmenau, Germany
- Department of Nanobiosystem Technology, Institute of Chemistry and Biotechnology, Technical University Ilmenau, Prof-Schmidt-Straße 26, 98693, Ilmenau, Germany
| | | | - Haocheng Wu
- Research Group Bioorganic Chemistry of Bioactive Surfaces, Institute of Chemistry and Biotechnology, Prof-Schmidt-Straße 26, 98693, Ilmenau, Germany
| | - Vipan Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar, India
| | - Sukhdeep Singh
- Research Group Bioorganic Chemistry of Bioactive Surfaces, Institute of Chemistry and Biotechnology, Prof-Schmidt-Straße 26, 98693, Ilmenau, Germany
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Kumar Gupta S, Panda N. Palladium-Catalyzed C3-Carbaldehyde Directed Regioselective C2-Thioarylation of Indoles. Chem Asian J 2024:e202400272. [PMID: 38577719 DOI: 10.1002/asia.202400272] [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: 03/10/2024] [Revised: 04/04/2024] [Accepted: 04/04/2024] [Indexed: 04/06/2024]
Abstract
Palladium-catalyzed thioarylation of indoles by diaryl disulfides in the presence of phenyliododiacetate is reported. The directing potential of weakly coordinating aldehyde group present at 3-position of indole was exploited for regioselective C2-H thioarylation over the possible C4-H functionalization. Mechanistic studies reveal that the process involves initial generation of thioaryl radical followed by sequential C-H activation, thiolate transfer, and reductive elimination.
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Affiliation(s)
- Sandip Kumar Gupta
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Niranjan Panda
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India
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13
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Bag SK, Pal A, Jana S, Thakur A. Recent Advances on Diarylethene-Based Photoswitching Materials: Applications in Bioimaging, Controlled Singlet Oxygen Generation for Photodynamic Therapy and Catalysis. Chem Asian J 2024:e202400238. [PMID: 38578057 DOI: 10.1002/asia.202400238] [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: 03/04/2024] [Revised: 04/05/2024] [Accepted: 04/05/2024] [Indexed: 04/06/2024]
Abstract
Photoswitching materials have emerged as a promising class of compounds that possess manifold interesting properties rendering their widespread use from photoswitches, regulators to optoelectronic devices, security technologies and biochemical assays. Diarylethenes (DAE) constitute one such category of photoswitchable compounds, where the key features of stability, photoisomerization wavelengths, quantum yield and variability in the photoisomers significantly depend on their derivatization. The last decade has witnessed a surge in the engagement of DAEs in different areas of chemical and biological sciences, like biomarkers, controlled generation of singlet oxygen, photo-dynamic therapy, chemosensing, catalysis, etc. In all the cases, the photoswitchability of DAE is the principal regulating factor along with its emission properties according to the appended groups. Previous reviews on applications of DAE-based systems did not predominantly cover all the aspects of biological and industrial implementations. They have covered only one field of application either in the biological science or in the synthetic aspect or photochromic aspects only. This review is a coalition of all those aspects in last six years. Here the variation of properties of the DAE systems with respect to structural diversifications have been discussed in detail along with their potential applications in bioimaging of cells, regulating singlet oxygen generation for photodynamic therapy and catalysis of organic reactions, and their future prospects. A tabular presentation of the photophysical properties of DAE derivatives adds to the basic understanding of this subject at a glance. We hope that this cumulative collection of contemporary research on DAE, as presented in this review, will enhance the knowledge of the readers about synthetic design anticipating their properties well in advance, and will certainly motivate researchers to generate new DAE architectures with superior chemical and biological properties in future.
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Affiliation(s)
- Sayan Kumar Bag
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
| | - Adwitiya Pal
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
| | - Subhendu Jana
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
| | - Arunabha Thakur
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
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Roy S, Morita D, Bhattacharya S, Dutta S, Basu S. Novel sequence type of carbapenem-resistant Acinetobacter pittii ST1451 with enhanced virulence isolated from septicaemic neonates in India. J Antimicrob Chemother 2024; 79:779-783. [PMID: 38334368 DOI: 10.1093/jac/dkae024] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 01/04/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND The clinical relevance of Acinetobacter pittii is increasing, but reports of this organism causing neonatal sepsis are rare. OBJECTIVES To understand the mechanisms of resistance and virulence of A. pittii isolated from neonatal blood belonging to a novel sequence type. MATERIALS AND METHODS Antibiotic susceptibility, MLST, WGS, phylogenomic comparison with a global collection of carbapenemase-harbouring A. pittii were done. To study the pathogenic potential of novel A. pittii, in vitro and in vivo assays were carried out. RESULTS AND DISCUSSION Two novel multidrug-resistant A. pittii from neonatal blood belonging to a novel sequence type 1451 (ST1451) were isolated. WGS revealed that the isolates were almost similar (147 SNP distant) and harbouring two carbapenem resistance genes blaNDM-1 with upstream ISAba125 and downstream bleMBL along with blaOXA-58 with upstream ISAba3. Other resistance genes included blaADC-25, blaOXA-533, aph(3″)-Ib, aph(3')-VIa, aph(6)-Id, aac(3)-IId, mph(E), msr(E), sul2 and tet(39), different efflux pump genes and amino acid substitutions within GyrA (Ser81Leu) and ParC (Ser84Leu; Glu88Ala) were detected among the isolates. The study genomes were closely related to four strains belonging to ST119. The isolates showed biofilm production, serum resistance, growth under iron limiting condition, surface-associated motility and adherence to host cell. Isolates induced cytokine production in the host cell and showed mice mortality. DISCUSSION AND CONCLUSIONS This study is the first report of the presence of blaNDM-1 in A. pittii from India along with another carbapenemase blaOXA-58. Emergence of highly virulent, multidrug-resistant A. pittii with attributes similar to A. baumannii calls for surveillance to identify the novel strains and their pathogenic and resistance potential.
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Affiliation(s)
- Subhasree Roy
- Division of Bacteriology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Daichi Morita
- Department of Microbiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Sushmita Bhattacharya
- Division of Biochemistry, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Shanta Dutta
- Division of Bacteriology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Sulagna Basu
- Division of Bacteriology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, India
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Gavadia R, Rasgania J, Sahu N, Nimesh S, Loveleen L, Mor S, Jakhar K. Synthesis of Indole-Linked Thiadiazoles and their Anticancer Action against Triple-Negative Breast Cancer. Chem Biodivers 2024; 21:e202302000. [PMID: 38427723 DOI: 10.1002/cbdv.202302000] [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] [Received: 12/12/2023] [Revised: 02/23/2024] [Accepted: 03/01/2024] [Indexed: 03/03/2024]
Abstract
With a lack of targeted therapy and significantly high metastasis, heterogeneity, and relapse rates, Triple-Negative Breast Cancer (TNBC) offers substantial treatment challenges and demands more chemotherapeutic interventions. In the present study, indole-endowed thiadiazole derivatives have been synthesized and screened for antiproliferative potency against the triple-negative breast cancer MDA-MB-231 cell line. Compound 4 h, possessing chlorophenyl moiety, displays the best anticancer potency (IC50: 0.43 μM) in the cell viability assay. The title compounds demonstrate substantial docking competency against the EGFR receptor (PDB ID: 3POZ), validating their in-vitro ant proliferative action. With a high docking score (-9.9 to -8.7 kcal/mol), the indole hybrids display significant binding propensity comparable to the co-crystallized ligand TAK-285 and occupy a similar strategic position in the active domain of the designated receptor. The quantum and electronic properties of the integrated templates are evaluated through DFT, and optimal values of the deduced global reactivity indices, such as energy gap, electronegativity, ionization potential, chemical potential, electrophilicity, etc., suggest their apt biochemical reactivity. The indole hybrids show near-appropriate pharmacokinetic efficacy and bioavailability in the in-silico studies, indicating their candidacy for potential drug usage. Promising in-vitro anticancer action and binding interfaces project indole conjugates as potential leads in addressing the TNBC dilemma.
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Affiliation(s)
- Renu Gavadia
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Jyoti Rasgania
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Neetu Sahu
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
| | - Surendra Nimesh
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Ajmer, 305817, India
| | - Lacy Loveleen
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Ajmer, 305817, India
| | - Satbir Mor
- Department of Chemistry, Guru Jambheshwar University of Science and Technology, Hisar, 125001, Haryana, India
| | - Komal Jakhar
- Department of Chemistry, M. D. University, Rohtak, 124001, Haryana, India
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16
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Sanyal S, Rajput S, Sadhukhan S, Rajender S, Mithal A, Chattopadhyay N. Polymorphisms in the Runx2 and osteocalcin genes affect BMD in postmenopausal women: a systematic review and meta-analysis. Endocrine 2024; 84:63-75. [PMID: 38055125 DOI: 10.1007/s12020-023-03621-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 11/17/2023] [Indexed: 12/07/2023]
Abstract
PURPOSE Runx2 and osteocalcin have pivotal roles in bone homeostasis. Polymorphism of these two genes could alter the function of osteoblasts and consequently bone mineral density (BMD). Attempts to understand the relationship between these polymorphisms and BMD in postmenopausal women across a variety of populations have yielded inconsistent results. This meta-analysis seeks to define the relationship between these polymorphisms with BMD in postmenopausal women. METHODS Eligible studies were identified from three electronic databases. Data were extracted from the eligible studies (4 studies on Runx2 and 6 studies on osteocalcin), and associations of Runx2 T > C and osteocalcin HindIII polymorphisms with BMD in postmenopausal women were assessed using standard difference in means (SDM) and 95% confidence intervals (CI) as statistical measures. RESULTS A significant difference in the lumbar spine (LS) BMD in postmenopausal women was observed between the TT and CC homozygotes for the Runx2 T > C (SDM = -0.445, p-value = 0.034). The mutant genotypes (CC) showed significantly lower LS BMD in comparison to wild type genotypes under recessive model of genetic analysis (TC + TT vs. CC: SDM = -0.451, p-value = 0.032). For osteocalcin, HindIII polymorphism, the mutant genotypes (HH) was associated with significantly higher BMD for both LS and femoral neck (FN) than the wild type (hh) homozygotes (SDM = 0.152, p-value = 0.008 and SDM = 0.139, p-value = 0.016 for LS and FN, respectively). There was no association between total hip (TH) BMD and the osteocalcin HindIII polymorphism. CONCLUSIONS Runx2 T > C and osteocalcin HindIII polymorphisms influence the level of BMD in postmenopausal women and may be used as predictive markers of osteoporosis.
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Affiliation(s)
- Somali Sanyal
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Lucknow, Uttar Pradesh, 226018, India.
| | - Swati Rajput
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Sreyanko Sadhukhan
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Singh Rajender
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India
| | - Ambrish Mithal
- Institute of Endocrinology and Diabetes, Max Healthcare, Institutional Area, Press Enclave Road, Saket, New Delhi, India.
| | - Naibedya Chattopadhyay
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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17
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S K N, P R, Ann Babu S, John J, Hopf H. A Review on the Synthetic Methods towards Benzothienobenzothiophenes. CHEM REC 2024; 24:e202400019. [PMID: 38456791 DOI: 10.1002/tcr.202400019] [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: 01/24/2024] [Revised: 02/20/2024] [Indexed: 03/09/2024]
Abstract
Benzothienobenzothiophenes (BTBTs) are a class of heteroacenes for which two distinct isomers have been identified depending on the locations of the fused benzothiophene motifs. Benzothienobenzothiophenes represent a class of heteroacenes demonstrating remarkable electronic properties that make them prominent in the realm of organic semiconductors. The structure of BTBTs, incorporating two sulfur atoms, contributes to their unique electronic characteristics, including narrow bandgaps and effective charge transport pathways. These compounds have gained attention for their high charge carrier mobility, making them desirable candidates for application in organic field-effect transistors (OFETs) and other electronic devices. Researchers have explored various synthetic strategies to design and tailor the properties of BTBT derivatives, leading to advancements in the development of high-performance organic semiconductors. Various synthetic techniques for benzothienobenzothiophenes have been reported in the literature including multistep synthesis, tandem transformations, electrochemical synthesis, and annulations. This review investigates the generality of each synthetic methodology by highlighting its benefits and drawbacks, and it analyses all synthetic approaches described for the creation of the two isomers. For the advantage of the readers, we have delved upon every mechanism of the reactions that are known. Finally, we have also summarized the synthetic methodologies that are used for making benzothienobenzothiophene analogues for material applications.
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Affiliation(s)
- Nandana S K
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rahul P
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sheba Ann Babu
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Jubi John
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Henning Hopf
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106, Braunschweig, Germany
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Bhat AM, Hussain A, Hassan QP, Bhat A. Culturable Streptomyces spp. from high-altitude, oligotrophic North Western Himalaya: a comprehensive study on the diversity, bioactivity and insights into the proteome of potential species. FEMS Microbiol Ecol 2024; 100:fiae026. [PMID: 38439700 PMCID: PMC10950047 DOI: 10.1093/femsec/fiae026] [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] [Received: 03/07/2023] [Revised: 11/27/2023] [Accepted: 03/02/2024] [Indexed: 03/06/2024] Open
Abstract
The increasing global concern of antimicrobial resistance and shortage of new antimicrobials necessitates exploring untapped terrestrial environments for new bioactive microbiome diversity. The low-temperature and oligotrophic North Western Himalaya (NWH) region has a vast diversity of Streptomyces with potential antimicrobial properties that remain largely unexplored. This study evaluates the diversity of culturable Streptomyces from high-altitude NWH and their potential as a source of new antimicrobials through genus-specific isolation and identification. The results demonstrate a distinct phylogenetic clustering of Streptomyces from different sampling regions of NWH, site-specific variation in culturable β-diversity and species commonness with varying intersite bioactivity among different sites. Further, the study optimized the media selection for large-scale culture cultivation in antibiotic production processes and demonstrated the antimicrobial efficacy of Streptomyces against a range of pathogens through in vitro bioassays using minimum inhibitory concentration determination and antibiofilm activity. Untargeted label-free proteomic profiling also revealed variable expression of stress-response proteins and antibiotic regulators as a competitive survival strategy for selective antagonistic Streptomyces. The findings highlight the potential of NWH in augmenting antimicrobial discovery and combating antimicrobial resistance through the isolation and study of novel bioactive Streptomyces.
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Affiliation(s)
- Aasif Majeed Bhat
- Plant Molecular Biology and Biotechnology Division, CSIR-Indian Institute of Integrative Medicine (IIIM), Sanatnagar, Srinagar, Jammu & Kashmir-190005, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh-201002, India
| | - Aehtesham Hussain
- NCMR-National Centre for Cell Science (NCCS), Pune-411007, Maharashtra, India
| | - Qazi Parvaiz Hassan
- Plant Molecular Biology and Biotechnology Division, CSIR-Indian Institute of Integrative Medicine (IIIM), Sanatnagar, Srinagar, Jammu & Kashmir-190005, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh-201002, India
| | - Adil Bhat
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
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Yadav U, Anand V, Kumar S, Verma I, Anshu A, Pandey IA, Kumar M, Behera SK, Srivastava S, Singh PC. Bacillus subtilis NBRI-W9 simultaneously activates SAR and ISR against Fusarium chlamydosporum NBRI-FOL7 to increase wilt resistance in tomato. J Appl Microbiol 2024; 135:lxae013. [PMID: 38268411 DOI: 10.1093/jambio/lxae013] [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] [Received: 08/02/2023] [Revised: 01/10/2024] [Accepted: 01/23/2024] [Indexed: 01/26/2024]
Abstract
AIMS The study aimed to determine the pathogenicity of Fusarium species currently prevalent in tomato fields having history of chemical fungicide applications and determine the bio-efficacy of Bacillus subtilis NBRI-W9 as a potent biological control agent. METHODS AND RESULTS Fusarium was isolated from surface-sterilized infected tomato plants collected from fields. Pathogenicity of 30 Fusarium isolates was determined by in vitro and in vivo assays. Following Koch's postulates, F. chlamydosporum (FOL7) was identified as a virulent pathogen. The biological control of FOL 7 by B. subtilis NBRI-W9 (W9) and the colonization potential of W9 were established using spontaneous rifampicin-resistant mutants. W9 showed 82% inhibition of FOL7 on a dual-culture plate and colonization levels in tomato plants of ∼5.5, ∼3.3, and ∼2.2 log10 CFU/g in root, stem, and leaf tissue, respectively. Antagonistic activity was shown by scanning electron microscopy (SEM) and cell-wall-degradative enzymes. W9 reduced FOL7 infection in net-house and field experiments by 60% and 41%, respectively. Biochemical investigation, defence enzymes, defence gene expression analysis, SEM, and field studies provide evidence of hyperparasitism and induced resistance as the mode of biological control. The study also demonstrates that the potent biocontrol agent W9, isolated from Piper, can colonize tomato plants, control fungal disease by inducing induced systemic resistance (ISR) and systemic acquired resistance (SAR) simultaneously, and increase crop yield by 21.58% under field conditions. CONCLUSIONS This study concludes that F. chlamydosporum (NBRI-FOL7) is a potent, fungicide-resistant pathogen causing wilt in tomatoes. NBRI-W9 controlled FOL7 through mycoparasitism and simultaneously activated ISR and SAR in plants, providing an attractive tool for disease control that acts at multiple levels.
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Affiliation(s)
- Udit Yadav
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Vandana Anand
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sanjeev Kumar
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Isha Verma
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Anshu Anshu
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
- Department of Botany, University of Lucknow, Hasanganj, Lucknow 226007, India
| | - Ishan Alok Pandey
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
| | - Manoj Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
- Division of Molecular Biology and Biotechnology, CSIR-NBRI, Lucknow 226001, India
| | - Sandip Kumar Behera
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
- Division of Plant Systematics and Herbarium, CSIR-NBRI, Lucknow 226001, India
| | - Suchi Srivastava
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
- Division of Molecular Biology and Biotechnology, CSIR-NBRI, Lucknow 226001, India
| | - Poonam C Singh
- Division of Microbial Technologies, CSIR- National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
- Division of Molecular Biology and Biotechnology, CSIR-NBRI, Lucknow 226001, India
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20
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Azeem MZ, Dubey MS, Islam MSA, Mandal PK. An Open-Air Palladium-Catalyzed Stereoselective O-Glycosylation of Glycals via in-situ Generation of gem-Disubstituted Methanols from p-Quinone Methides. Chem Asian J 2024; 19:e202301013. [PMID: 38133606 DOI: 10.1002/asia.202301013] [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: 11/16/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 12/23/2023]
Abstract
We devised a palladium-catalyzed α-stereoselective glycosylation that incorporates oxygen via in-situ generation of gem-disubstituted methanols from p-quinone methides to access 2,3-unsaturated gem-diarylmethyl O-glycosides under open-air atmosphere at room temperature. Advantages of this environmentally friendly strategy include the absence of additives and ligands, using water as the green source of oxygen, mildest, operationally simple, exhibiting a wide functional group tolerance, and compatibility with a variety of glycal progenitors in appreciable yields. A mechanistic study has been verified via H2 18 O labeling, which validates that water (moisture) is a sole source of oxygen.
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Affiliation(s)
- Ms Zanjila Azeem
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
- Chemical Science, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ms Shashiprabha Dubey
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
| | - Mr Sk Areful Islam
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
- Chemical Science, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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21
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Rakesh S, Aravind L, Krishnan A. Reappraisal of the DNA phosphorothioate modification machinery: uncovering neglected functional modalities and identification of new counter-invader defense systems. Nucleic Acids Res 2024; 52:1005-1026. [PMID: 38163645 PMCID: PMC10853773 DOI: 10.1093/nar/gkad1213] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 12/03/2023] [Accepted: 12/10/2023] [Indexed: 01/03/2024] Open
Abstract
The DndABCDE systems catalysing the unusual phosphorothioate (PT) DNA backbone modification, and the DndFGH systems, which restrict invasive DNA, have enigmatic and paradoxical features. Using comparative genomics and sequence-structure analyses, we show that the DndABCDE module is commonly functionally decoupled from the DndFGH module. However, the modification gene-neighborhoods encode other nucleases, potentially acting as the actual restriction components or suicide effectors limiting propagation of the selfish elements. The modification module's core consists of a coevolving gene-pair encoding the DNA-scanning apparatus - a DndD/CxC-clade ABC ATPase and DndE with two ribbon-helix-helix (MetJ/Arc) DNA-binding domains. Diversification of DndE's DNA-binding interface suggests a multiplicity of target specificities. Additionally, many systems feature DNA cytosine methylase genes instead of PT modification, indicating the DndDE core can recruit other nucleobase modifications. We show that DndFGH is a distinct counter-invader system with several previously uncharacterized domains, including a nucleotide kinase. These likely trigger its restriction endonuclease domain in response to multiple stimuli, like nucleotides, while blocking protective modifications by invader methylases. Remarkably, different DndH variants contain a HerA/FtsK ATPase domain acquired from multiple sources, including cellular genome-segregation systems and mobile elements. Thus, we uncovered novel HerA/FtsK-dependent defense systems that might intercept invasive DNA during replication, conjugation, or packaging.
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Affiliation(s)
- Siuli Rakesh
- Department of Biological Sciences, Indian Institute of Science Education and Research Berhampur (IISER Berhampur), Berhampur 760010, India
| | - L Aravind
- National Center for Biotechnology Information (NCBI), National Library of Medicine (NLM), National Institutes of Health (NIH), Bethesda, MD 20894, USA
| | - Arunkumar Krishnan
- Department of Biological Sciences, Indian Institute of Science Education and Research Berhampur (IISER Berhampur), Berhampur 760010, India
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Dutta M, Sharma P, Raturi V, Bhargava B, Zinta G. SarCTAB: an efficient and cost-effective DNA isolation protocol from geophytes. 3 Biotech 2024; 14:36. [PMID: 38221992 PMCID: PMC10784239 DOI: 10.1007/s13205-023-03874-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 12/04/2023] [Indexed: 01/16/2024] Open
Abstract
Geophytes are herbaceous plants that grow anew from underground buds and are excellent models to study storage organ formation. However, molecular studies involving geophytes are constrained due to the presence of a wide spectrum of polysaccharides and polyphenols that contaminate the genomic DNA. At present, several protocols exist for the extraction of genomic DNA from different plant species; however, isolating high-quality DNA from geophytes is challenging. Such challenges are further complexed by longer incubation time and multiple precipitation steps involved in existing DNA isolation methods. To overcome such problems, we aimed to establish a DNA extraction method (SarCTAB) which is an economical, quick, and sustainable way of DNA isolation from geophytes. We improved the traditional CTAB method by optimizing key ingredients such as sarcosine, β-mercaptoethanol, and high molar concentration of sodium chloride (NaCl), which resulted in high concentration and good-quality DNA with lesser polysaccharides, proteins, and polyphenols. This method was evaluated to extract DNA from storage organs of six different geophytes. The SarCTAB method provides an average yield of 1755 ng/µl of high-quality DNA from 100 mg of underground storage tissues with an average standard purity of 1.86 (260/280) and 1.42 (260/230). The isolated genomic DNA performed well with Inter-simple sequence repeat (ISSR) amplification, restriction digestion with EcoRI, and PCR amplification of plant barcode genes viz. matK and rbcL. Also, the cost involved in DNA isolation was low when compared to that with commercially available kits. Overall, SarCTAB method works effectively to isolate high-quality genomic DNA in a cost-effective manner from the underground storage tissues of geophytes, and can be applied for next-generation sequencing, DNA barcoding, and whole genome bisulfite sequencing.
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Affiliation(s)
- Madhushree Dutta
- Integrative Plant AdaptOmics Lab (iPAL), Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh 176061 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002 India
| | - Paras Sharma
- Integrative Plant AdaptOmics Lab (iPAL), Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh 176061 India
| | - Vidhi Raturi
- Integrative Plant AdaptOmics Lab (iPAL), Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh 176061 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002 India
| | - Bhavya Bhargava
- Integrative Plant AdaptOmics Lab (iPAL), Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh 176061 India
- Agrotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh 176061 India
| | - Gaurav Zinta
- Integrative Plant AdaptOmics Lab (iPAL), Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh 176061 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002 India
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Lavekar AG, Thakare R, Saima, Equbal D, Chopra S, Sinha AK. Indole-based aryl sulfides target the cell wall of Staphylococcus aureus without detectable resistance. Drug Dev Res 2024; 85:e22123. [PMID: 37840429 DOI: 10.1002/ddr.22123] [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] [Received: 07/10/2023] [Revised: 09/05/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023]
Abstract
Sulfur-containing classes of the scaffold "Arylthioindoles" have been evaluated for antibacterial activity; they demonstrated excellent potency against methicillin-resistant Staphylococcus aureus (MRSA) as well as against vancomycin-resistant strains and a panel of clinical isolates of resistant strains. In this study, we have elucidated the mechanism of action of lead compounds, wherein they target the cell wall of S. aureus. Further, S. aureus failed to develop resistance against two lead compounds tested in a serial passage experiment in the presence of the compounds over a period of 40 days. Both the compounds demonstrated comparable in vivo efficacy with vancomycin in a neutropenic mice thigh infection model. The results of these antibacterial activities emphasize the excellent potential of thioethers for developing novel antibiotics and may fill in as a target for the adjustment of accessible molecules to develop new powerful antibacterial agents with fewer side effects.
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Affiliation(s)
- Aditya G Lavekar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Ritesh Thakare
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
- Department of Cell and Cancer Biology, UMass Chan Medical School, Worcester, Massachusetts, USA
| | - Saima
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
- School of Advanced Chemical Sciences, Solan, Himachal Pradesh, India
| | - Danish Equbal
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Sidharth Chopra
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Arun K Sinha
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- Ranchi University, Ranchi, Jharkhand, India
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Singh T, Bisht N, Ansari MM, Mishra SK, Chauhan PS. Paenibacillus lentimorbus alleviates nutrient deficiency-induced stress in Zea mays by modulating root system architecture, auxin signaling, and metabolic pathways. Plant Cell Rep 2024; 43:49. [PMID: 38302760 DOI: 10.1007/s00299-023-03133-3] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/14/2023] [Indexed: 02/03/2024]
Abstract
KEY MESSAGE Paenibacillus lentimorbus reprograms auxin signaling and metabolic pathways for modulating root system architecture to mitigate nutrient deficiency in maize crops. The arable land across the world is having deficiency and disproportionate nutrients, limiting crop productivity. In this study, the potential of plant growth-promoting rhizobacteria (PGPR) viz., Pseudomonas putida, Paenibacillus lentimorbus, and their consortium was explored for growth promotion in maize (Zea mays) under nutrient-deficient conditions. PGPR inoculation improved the overall health of plants under nutrient-deficient conditions. The PGPR inoculation significantly improved the root system architecture and also induced changes in root cortical aerenchyma. Based on plant growth and physiological parameters inoculation with P. lentimorbus performed better as compared to P. putida, consortium, and uninoculated control. Furthermore, expression of auxin signaling (rum1, rul1, lrp1, rtcs, rtcl) and root hair development (rth)-related genes modulated the root development process to improve nutrient acquisition and tolerance to nutrient-deficient conditions in P. lentimorbus inoculated maize plants. Further, GC-MS analysis indicated the involvement of metabolites including carbohydrates and organic acids due to the interaction between maize roots and P. lentimorbus under nutrient-deficient conditions. These findings affirm that P. lentimorbus enhance overall plant growth by modulating the root system of maize to provide better tolerance to nutrient-deficient condition.
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Affiliation(s)
- Tanya Singh
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Nikita Bisht
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
| | - Mohd Mogees Ansari
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shashank Kumar Mishra
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
| | - Puneet Singh Chauhan
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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25
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Kumari S, Mishra RK, Parveen S, Avinashi SK, Hussain A, Kumar S, Banerjee M, Rao J, Kumar R, Gautam RK, Gautam C. Fabrication, structural, and enhanced mechanical behavior of MgO substituted PMMA composites for dental applications. Sci Rep 2024; 14:2128. [PMID: 38267527 PMCID: PMC10808548 DOI: 10.1038/s41598-024-52202-4] [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] [Received: 09/29/2023] [Accepted: 01/16/2024] [Indexed: 01/26/2024] Open
Abstract
The most common denture material used for dentistry is poly-methyl-methacrylate (PMMA). Usually, the polymeric PMMA material has numerous biological, mechanical and cost-effective shortcomings. Hence, to resolve such types of drawbacks, attempts have been made to investigate fillers of the PMMA like alumina (Al2O3), silica (SiO2), zirconia (ZrO2) etc. For the enhancement of the PMMA properties a suitable additive is required for its orthopedic applications. Herein, the main motive of this study was to synthesize a magnesium oxide (MgO) reinforced polymer-based hybrid nano-composites by using heat cure method with superior optical, biological and mechanical characteristics. For the structural and vibrational studies of the composites, XRD and FT-IR were carried out. Herein, the percentage of crystallinity for all the fabricated composites were also calculated and found to be 14.79-30.31. Various physical and optical parameters such as density, band gap, Urbach energy, cutoff energy, cutoff wavelength, steepness parameter, electron-phonon interaction, refractive index, and optical dielectric constant were also studied and their values are found to be in the range of 1.21-1.394 g/cm3, 5.44-5.48 eV, 0.167-0.027 eV, 5.68 eV, 218 nm, 0.156-0.962, 4.273-0.693, 1.937-1.932, and 3.752-3.731 respectively. To evaluate the mechanical properties like compressive strength, flexural strength, and fracture toughness of the composites a Universal Testing Machine (UTM) was used and their values were 60.3 and 101 MPa, 78 and 40.3 MPa, 5.85 and 9.8 MPa-m1/2 respectively. Tribological tests of the composites were also carried out. In order to check the toxicity, MTT assay was also carried out for the PM0 and PM15 [(x)MgO + (100 - x) (C5O2H8)n] (x = 0 and 15) composites. This study provides a comprehensive insight into the structural, physical, optical, and biological features of the fabricated PMMA-MgO composites, highlighting the potential of the PM15 composite with its enhanced density, mechanical strength, and excellent biocompatibility for denture applications.
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Affiliation(s)
- Savita Kumari
- Department of Physics, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - Rajat Kumar Mishra
- Department of Physics, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - Shama Parveen
- Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | | | - Ajaz Hussain
- Department of Physics, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - Saurabh Kumar
- Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - Monisha Banerjee
- Department of Zoology, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India
| | - Jitendra Rao
- Department of Prosthodontics, King George Medical University, Shah Mina Road, Chowk, Lucknow, Uttar Pradesh, 226003, India
| | - Rupesh Kumar
- Department of Mechanical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, UP, 221005, India
| | - Rakesh Kumar Gautam
- Department of Mechanical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, UP, 221005, India
| | - Chandkiram Gautam
- Department of Physics, University of Lucknow, Lucknow, Uttar Pradesh, 226007, India.
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Muthu C, Resmi AN, Ajayakumar A, Ravindran NEA, Dayal G, Jinesh KB, Szaciłowski K, Vijayakumar C. Self-Assembly of Delta-Formamidinium Lead Iodide Nanoparticles to Nanorods: Study of Memristor Properties and Resistive Switching Mechanism. Small 2024:e2304787. [PMID: 38243886 DOI: 10.1002/smll.202304787] [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] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 12/02/2023] [Indexed: 01/22/2024]
Abstract
In the quest for advanced memristor technologies, this study introduces the synthesis of delta-formamidinium lead iodide (δ-FAPbI3 ) nanoparticles (NPs) and their self-assembly into nanorods (NRs). The formation of these NRs is facilitated by iodide vacancies, promoting the fusion of individual NPs at higher concentrations. Notably, these NRs exhibit robust stability under ambient conditions, a distinctive advantage attributed to the presence of capping ligands and a crystal lattice structured around face-sharing octahedra. When employed as the active layer in resistive random-access memory devices, these NRs demonstrate exceptional bipolar switching properties. A remarkable on/off ratio (105 ) is achieved, surpassing the performances of previously reported low-dimensional perovskite derivatives and α-FAPbI3 NP-based devices. This enhanced performance is attributed to the low off-state current owing to the reduced number of halide vacancies, intrinsic low dimensionality, and the parallel alignment of NRs on the FTO substrate. This study not only provides significant insights into the development of superior materials for memristor applications but also opens new avenues for exploring low-dimensional perovskite derivatives in advanced electronic devices.
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Affiliation(s)
- Chinnadurai Muthu
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - A N Resmi
- Department of Physics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram, 695 547, India
| | - Avija Ajayakumar
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
| | - N E Aswathi Ravindran
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
| | - G Dayal
- Department of Physics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram, 695 547, India
| | - K B Jinesh
- Department of Physics, Indian Institute of Space Science and Technology (IIST), Thiruvananthapuram, 695 547, India
| | - Konrad Szaciłowski
- Academic Centre for Materials and Nanotechnology, AGH University of Krakow, Mickiewicza 30, Krakow, 30 059, Poland
| | - Chakkooth Vijayakumar
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
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Bhusanur DI, More KS, Al Kobaisi M, Singh PK, Bhosale SV, Bhosale SV. Synthesis, Photophysical Properties and Self-Assembly of a Tetraphenylethylene-Naphthalene Diimide Donor-Acceptor Molecule. Chem Asian J 2024:e202301046. [PMID: 38180124 DOI: 10.1002/asia.202301046] [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: 11/25/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/06/2024]
Abstract
The development of new π-conjugated molecular structures with controlled self-assembly and distinct photophysical properties is crucial for advancing applications in optoelectronics and biomaterials. This study introduces the synthesis and detailed self-assembly analysis of tetraphenylethylene (TPE) functionalized naphthalene diimide (NDI), a novel donor-acceptor molecular structure referred to as TPE-NDI. The investigation specifically focuses on elucidating the self-assembly behavior of TPE-NDI in mixed solvents of varying polarities, namely chloroform: methylcyclohexane (CHCl3 : MCH) and chloroform: methanol (CHCl3 : MeOH). Employing a several analytical methodologies, including UV-Vis absorption and fluorescence emission spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and dynamic light scattering (DLS), these self-assembled systems have been comprehensively examined. The results reveal that TPE-NDI manifests as distinct particles in CHCl3 : MCH (fMCH =90 %), while transitioning to flower-like assemblies in CHCl3 : MeOH (fMeOH =90 %). This finding underscores the critical role of solvent polarity in dictating the morphological characteristics of TPE-NDI self-assembled aggregates. Furthermore, the study proposes a molecular packing mechanism, based on SEM data, offering significant insights into the design and development of functional supramolecular systems. Such advancements in understanding the molecular self-assembly new π-conjugated molecular structures are anticipated to pave the way for novel applications in material science and nanotechnology.
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Affiliation(s)
- Dnyaneshwar I Bhusanur
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, 500 007, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), 201 002, Ghaziabad, Uttar Pradesh, India
| | - Kerba S More
- Department School of Chemical Sciences, Goa University, 403 206, Taleigao Plateau, Goa, India
| | - Mohammad Al Kobaisi
- School of Science, RMIT University, GPO Box 2476, 3001, Melbourne, VIC, Australia
| | - Prabhat K Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, 400 085, Mumbai, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, 400 094, Mumbai, India
| | - Sidhanath V Bhosale
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, 500 007, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), 201 002, Ghaziabad, Uttar Pradesh, India
| | - Sheshanath V Bhosale
- Department of Chemistry, School of Chemical Sciences, Central University of Karnataka, Kadaganchi, 585 367, Kalaburagi, Karnataka, India
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Rao VK, Ashtam A, Panda D, Guchhait SK. Natural-Product-Inspired Discovery of Trimethoxyphenyl-1,2,4-triazolosulfonamides as Potent Tubulin Polymerization Inhibitors. ChemMedChem 2024; 19:e202300562. [PMID: 37975190 DOI: 10.1002/cmdc.202300562] [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] [Received: 10/18/2023] [Revised: 11/10/2023] [Accepted: 11/15/2023] [Indexed: 11/19/2023]
Abstract
An approach of natural product-inspired strategy and incorporation of an NP-privileged motif has been investigated for the discovery of new tubulin polymerization inhibitors. Two series, N-Arylsulfonyl-3-arylamino-5-amino-1,2,4-triazole derivatives, and their isomers were considered. The compounds were synthesized by construction of the N-aryl-1,2,4-triazole-3,5-diamine motif and sulfonylation. Although the chemo- and regioselectivity in sulfonylation were challenging due to multiple ring-tautomerizable-NH and exocyclic NH2 functionalities present in the molecular motifs, the developed synthetic method enabled the preparation of designed molecular skeletons with biologically important motifs. The approach also led to explore interesting molecular regio- and stereochemical aspects valuable for activity. The X-ray crystallography study indicated that the hydrogen bonding between the arylamine-NH and the arylsulfonyl-"O" unit and appropriate molecular-functionality topology allowed the cis-locking of two aryls, which is important for tubulin-binding and antiproliferative properties. All synthesized compounds majorly showed characteristic antiproliferative effects in breast cancer cells (MCF-7), and four compounds exhibited potent antiproliferative activity. One compound potently bound to tubulin at the colchicine site and inhibited tubulin polymerization in vitro. The compound significantly depolymerized microtubules in MCF-7 cells, arrested the cells at the G2/M phase, and induced cell death. This study represents the importance of the design strategy in medicinal chemistry and the molecular structural features relevant to anticancer anti-tubulin properties. The explored molecules have the potential for further development.
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Affiliation(s)
- Vajja Krishna Rao
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), 160062, S.A.S. Nagar, India
| | - Anvesh Ashtam
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, 400076, Mumbai, India
| | - Dulal Panda
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), 160062, S.A.S. Nagar, India
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, 400076, Mumbai, India
| | - Sankar K Guchhait
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), 160062, S.A.S. Nagar, India
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Ghosh S, Sett U, Pal A, Nandy S, Nandi S, Chakrabarty S, Das A, Bandopadhyay P, Basu T. Antibiofilm potential of nanonized eugenol against Pseudomonas aeruginosa. J Appl Microbiol 2024; 135:lxad305. [PMID: 38093454 DOI: 10.1093/jambio/lxad305] [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] [Received: 06/19/2023] [Revised: 12/03/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024]
Abstract
AIMS The purpose of this study was to synthesize a nanoform of eugenol (an important phytochemical with various pharmacological potentials) and to investigate its antibiofilm efficacy on Pseudomonas aeruginosa biofilm. METHODS AND RESULTS Colloidal suspension of eugenol-nanoparticles (ENPs) was synthesized by the simple ultrasonic cavitation method through the emulsification of hydrophobic eugenol into hydrophilic gelatin. Thus, the nanonization process made water-insoluble eugenol into water-soluble nano-eugenol, making the nanoform bioavailable. The size of the ENPs was 20-30 nm, entrapment efficiency of eugenol within gelatin was 80%, and release of eugenol from the gelatin cap was slow and sustained over 5 days. Concerning the clinically relevant pathogen P. aeruginosa, ENPs had higher antibiofilm (for both formation and eradication) activities than free eugenol. Minimal biofilm inhibitory concentration and minimal biofilm eradication concentration of ENP on P. aeruginosa biofilm were 2.0 and 4.0 mM, respectively. In addition, the measurement of P. aeruginosa biofilm biomass, biofilm thickness, amount of biofilm extra-polymeric substance, cell surface hydrophobicity, cell swarming and twitching efficiencies, cellular morphology, and biofilm formation in catheter demonstrated that the antibiofilm efficacy of nano-eugenol was 30%-40% higher than that of bulk eugenol. CONCLUSION These results signify that future pharmacological and clinical studies are very much required to investigate whether ENPs can act as an effective drug against P. aeruginosa biofilm-mediated diseases. Thus, the problem of intrinsic antibiotic tolerance of biofilm-forming cells may be minimized by ENPs. Moreover, ENP may be used as a potential catheter-coating agent to inhibit pseudomonal colonization on catheter surfaces and, therefore, to reduce catheter-associated infections and complications.
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Affiliation(s)
- Sourav Ghosh
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Upasana Sett
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Anabadya Pal
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Sanchita Nandy
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Susmita Nandi
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Soumajit Chakrabarty
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Abhijit Das
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Pathikrit Bandopadhyay
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
| | - Tarakdas Basu
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741 235, India
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30
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Gangareddy J, Rudra P, Chirumamilla M, Ganisetti S, Kasimuthumaniyan S, Sahoo S, Jayanthi K, Rathod J, Soma VR, Das S, Gosvami NN, Krishnan NMA, Pedersen K, Mondal S, Ghosh S, Allu AR. Multi-Functional Applications of H-Glass Embedded with Stable Plasmonic Gold Nanoislands. Small 2024; 20:e2303688. [PMID: 37670541 DOI: 10.1002/smll.202303688] [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] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/11/2023] [Indexed: 09/07/2023]
Abstract
Metal nanoparticles (MNPs) are synthesized using various techniques on diverse substrates that significantly impact their properties. However, among the substrate materials investigated, the major challenge is the stability of MNPs due to their poor adhesion to the substrate. Herein, it is demonstrated how a newly developed H-glass can concurrently stabilize plasmonic gold nanoislands (GNIs) and offer multifunctional applications. The GNIs on the H-glass are synthesized using a simple yet, robust thermal dewetting process. The H-glass embedded with GNIs demonstrates versatility in its applications, such as i) acting as a room temperature chemiresistive gas sensor (70% response for NO2 gas); ii) serving as substrates for surface-enhanced Raman spectroscopy for the identifications of Nile blue (dye) and picric acid (explosive) analytes down to nanomolar concentrations with enhancement factors of 4.8 × 106 and 6.1 × 105 , respectively; and iii) functioning as a nonlinear optical saturable absorber with a saturation intensity of 18.36 × 1015 W m-2 at 600 nm, and the performance characteristics are on par with those of materials reported in the existing literature. This work establishes a facile strategy to develop advanced materials by depositing metal nanoislands on glass for various functional applications.
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Affiliation(s)
- Jagannath Gangareddy
- CSIR-Central Glass and Ceramic Research Institute, 196 Raja S C Mullick Road, Kolkata, 700 032, India
| | - Pratyasha Rudra
- CSIR-Central Glass and Ceramic Research Institute, 196 Raja S C Mullick Road, Kolkata, 700 032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Manohar Chirumamilla
- Department of Materials and Production, Aalborg University, Skjernvej 4A, Aalborg, 9220, Denmark
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Eissendorfer Strasse 38, 21073, Hamburg, Germany
| | - Sudheer Ganisetti
- Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Subramanian Kasimuthumaniyan
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Sourav Sahoo
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - K Jayanthi
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Jagannath Rathod
- Advanced Centre of Research in High Energy Materials (ACRHEM), DRDO Industry Academia-Centre of Excellence (DIA-COE), University of Hyderabad, Hyderabad, Telangana, 500046, India
| | - Venugopal Rao Soma
- Advanced Centre of Research in High Energy Materials (ACRHEM), DRDO Industry Academia-Centre of Excellence (DIA-COE), University of Hyderabad, Hyderabad, Telangana, 500046, India
| | - Subrata Das
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala, 695019, India
| | - Nitya Nand Gosvami
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - N M Anoop Krishnan
- Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Kjeld Pedersen
- Department of Materials and Production, Aalborg University, Skjernvej 4A, Aalborg, 9220, Denmark
| | - Swastik Mondal
- CSIR-Central Glass and Ceramic Research Institute, 196 Raja S C Mullick Road, Kolkata, 700 032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Srabanti Ghosh
- CSIR-Central Glass and Ceramic Research Institute, 196 Raja S C Mullick Road, Kolkata, 700 032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Amarnath R Allu
- CSIR-Central Glass and Ceramic Research Institute, 196 Raja S C Mullick Road, Kolkata, 700 032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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31
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Asha S, Kattupalli D, Vijayanathan M, Soniya EV. Identification of nitric oxide mediated defense signaling and its microRNA mediated regulation during Phytophthora capsici infection in black pepper. Physiol Mol Biol Plants 2024; 30:33-47. [PMID: 38435849 PMCID: PMC10901764 DOI: 10.1007/s12298-024-01414-z] [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] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/20/2023] [Accepted: 01/22/2024] [Indexed: 03/05/2024]
Abstract
Nitric oxide plays a significant role in the defense signaling during pathogen interaction in plants. Quick wilt disease is a devastating disease of black pepper, and leads to sudden mortality of pepper vines in plantations. In this study, the role of nitric oxide was studied during Phytophthora capsici infection in black pepper variety Panniyur-1. Nitric oxide was detected from the different histological sections of P. capsici infected leaves. Furthermore, the genome-wide transcriptome analysis characterized typical domain architect and structural features of nitrate reductase (NR) and nitric oxide associated 1 (NOA1) gene that are involved in nitric oxide biosynthesis in black pepper. Despite the upregulation of nitrate reductase (Pn1_NR), a reduced expression of Pn1_NOA1 was detected in the P. capsici infected black pepper leaf. Subsequent sRNAome-assisted in silico analysis revealed possible microRNA mediated regulation of Pn1_NOA mRNAs. Furthermore, sRNA/miRNA mediated cleavage on Pn1_NOA1 mRNA was validated through modified 5' RLM RACE experiments. Several hormone-responsive cis-regulatory elements involved in stress response was detected from the promoter regions of Pn_NOA1, Pn_NR1 and Pn_NR2 genes. Our results revealed the role of nitric oxide during stress response of P. capsici infection in black pepper, and key genes involved in nitric oxide biosynthesis and their post-transcriptional regulatory mechanisms. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-024-01414-z.
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Affiliation(s)
- Srinivasan Asha
- Transdisciplinary Biology, Plant Disease Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala India
- Present Address: Department of Molecular Biology and Biotechnology, College of Agriculture, Vellayani, Kerala Agricultural University, Thiruvananthapuram, India
| | - Divya Kattupalli
- Transdisciplinary Biology, Plant Disease Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala India
| | - Mallika Vijayanathan
- Transdisciplinary Biology, Plant Disease Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala India
- Present Address: Department of Plant and Environmental Sciences, University of Copenhagen, Capital Region, Denmark
| | - E. V. Soniya
- Transdisciplinary Biology, Plant Disease Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala India
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32
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Grover V, Ravikanth M. One Pot Synthesis of Two Distinct Macrocycles: Aromatic p-Benzihexaphyrin and Nonaromatic Doubly Fused p-Benzihexaphyrin. Chem Asian J 2023:e202301041. [PMID: 38156957 DOI: 10.1002/asia.202301041] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/24/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
Aromatic trithia p-benzihexaphyrins and nonaromatic doubly fused trithia p-benzihexaphyrins were synthesized in a one pot reaction by condensing a p-benzithiophene based tetrapyrrane with three different bithiophene diols under acid catalyzed conditions. The aromatic and nonaromatic macrocycles showed clear differences in colour, NMR, absorption, and electrochemical properties. Theoretical studies supported the observed aromatic and nonaromatic characteristics, respectively, of the p-benzihexaphyrins and their N-fused derivatives.
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Affiliation(s)
- Vratta Grover
- Indian Institute of Technology, Powai, Mumbai, 400076, India
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33
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Subramani S, Bagde A, Balke A, Chakrabarti T, Bafana A. Strategy for Remediation of Polychlorinated Biphenyls-Contaminated Soil Through Redox Management Based on Electronegativity of the Contaminants. Bull Environ Contam Toxicol 2023; 112:22. [PMID: 38151599 DOI: 10.1007/s00128-023-03847-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/06/2023] [Indexed: 12/29/2023]
Abstract
Literature review reveals that Persistent Organic Pollutants (POPs), such as polychlorinated biphenyls (PCBs), are electron deficient compounds due to the presence of highly electronegative groups. Hence, they are more amenable to anaerobic biodegradation rather than oxidative metabolism. However, the studies on PCBs bioremediation are more inclined towards aerobic treatment. Besides, the past studies are mainly centered on screening and application of PCB-degrading microorganisms. In our opinion the degradative capacity is already present in the native microflora, and choice of electron donor is of paramount importance for faster reductive metabolism of PCBs. In this study, the use of methanol as electron donor with cow dung as the general microbial inoculum resulted in high specific rate of degradation (0.0542-0.0637 /day) for high-chlorinated biphenyls. The % removal of PCBs ranged between 67.7 and 71.7%. It may be the first study on the application of methanol as a cheap electron donor for PCBs biodegradation without bioaugmentation with specifically selected microorganisms.
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Affiliation(s)
- S Subramani
- CSIR-NEERI (National Environmental Engineering Research Institute), Nehru Road, Nagpur, 440020, India
| | - Ankita Bagde
- CSIR-NEERI (National Environmental Engineering Research Institute), Nehru Road, Nagpur, 440020, India
| | - Aniket Balke
- CSIR-NEERI (National Environmental Engineering Research Institute), Nehru Road, Nagpur, 440020, India
| | - Tapan Chakrabarti
- CSIR-NEERI (National Environmental Engineering Research Institute), Nehru Road, Nagpur, 440020, India
| | - Amit Bafana
- CSIR-NEERI (National Environmental Engineering Research Institute), Nehru Road, Nagpur, 440020, India.
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34
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Kar S, Mishra SK, Misra S, Agarwal R, Kumar S, Chauhan PS. Endophytic Alkalotolerant Plant Growth-Promoting Bacteria Render Maize (Zea mays L.) Growth Under Alkaline Stress. Curr Microbiol 2023; 81:43. [PMID: 38117393 DOI: 10.1007/s00284-023-03557-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 11/13/2023] [Indexed: 12/21/2023]
Abstract
This study investigates the role of bacterial endophytes from extreme alkaline environments in alleviating alkaline stress and plant development. Stressful environmental factors, such as soil acidity and alkalinity/sodicity, frequently affect plant development. In the present study, alkaline-tolerant endophytic strains were isolated from three plant species Saccharum munja, Calotropis procera, and Chenopodium album, and 15 out of the total of 48 isolates were selected for further examination of their abiotic stress tolerance. Molecular analysis based on 16S rRNA gene sequencing revealed strains from Enterobacter, Acinetobacter, Stenotrophomonas, Bacillus, Lysinibacillus, and Mammaliicoccus genera. Out of 15 isolates based on their quantitative PGP traits and abiotic stress tolerance, 6 were finally selected for greenhouse experiments. Under alkaline conditions, results demonstrated that the strains from the genera Enterobacter, Bacillus, Stenotrophomonas, and Lysinibacillus had beneficial effects on maize growth. These findings suggest that using a combination of bacteria with multiple plant growth-promoting attributes could be a sustainable approach to enhance agricultural yield, even in a challenging alkaline environment. The study concludes that the application of bacterial endophytes from plants growing in extremely alkaline environments might provide other plants with similar stress-tolerance abilities. The outcome of the study provides a basis for future exploration of the mechanisms underlying endophyte-induced stress tolerance.
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Affiliation(s)
- Srishti Kar
- Microbial Technologies Division, Council of Scientific and Industrial Research-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India
| | - Shashank Kumar Mishra
- Microbial Technologies Division, Council of Scientific and Industrial Research-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India
| | - Sankalp Misra
- Microbial Technologies Division, Council of Scientific and Industrial Research-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India
- Faculty of Biosciences, Institute of Biosciences and Technology, Shri Ramswaroop Memorial University, Lucknow-Deva Road, Barabanki, Uttar Pradesh, 225003, India
| | - Renuka Agarwal
- Microbial Technologies Division, Council of Scientific and Industrial Research-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India
| | - Susheel Kumar
- Microbial Technologies Division, Council of Scientific and Industrial Research-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India
| | - Puneet Singh Chauhan
- Microbial Technologies Division, Council of Scientific and Industrial Research-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India.
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35
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Singh A, Goswami S, Singh P, Das D. Exploitation of Catalytic Dyads by Short Peptide-Based Nanotubes for Enantioselective Covalent Catalysis. Angew Chem Int Ed Engl 2023; 62:e202315716. [PMID: 37922218 DOI: 10.1002/anie.202315716] [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] [Received: 10/18/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/05/2023]
Abstract
Extant enzymes with precisely arranged multiple residues in their three-dimensional binding pockets are capable of exhibiting remarkable stereoselectivity towards a racemic mixture of substrates. However, how early protein folds that possibly featured short peptide fragments facilitated enantioselective catalytic transformations important for the emergence of homochirality still remains an intriguing open question. Herein, enantioselective hydrolysis was shown by short peptide-based nanotubes that could exploit multiple solvent-exposed residues to create chiral binding grooves to covalently interact and subsequently hydrolyse one enantiomer preferentially from a racemic pool. Single or double-site chiral mutations led to opposite but diminished and even complete loss of enantioselectivities, suggesting the critical roles of the binding enthalpies from the precise localization of the active site residues, despite the short sequence lengths. This work underpins the enantioselective catalytic prowess of short peptide-based folds and argues their possible role in the emergence of homochiral chemical inventory.
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Affiliation(s)
- Abhishek Singh
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
| | - Surashree Goswami
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
| | - Priyanshu Singh
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
| | - Dibyendu Das
- Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, 741246, India
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36
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Paul R, Das R, Das N, Chakraborty S, Pao CW, Thang Trinh Q, Kalhara Gunasooriya GTK, Mondal J, Peter SC. Tweaking Photo CO 2 Reduction by Altering Lewis Acidic Sites in Metalated-Porous Organic Polymer for Adjustable H 2 /CO Ratio in Syngas Production. Angew Chem Int Ed Engl 2023; 62:e202311304. [PMID: 37872849 DOI: 10.1002/anie.202311304] [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: 08/04/2023] [Revised: 09/29/2023] [Accepted: 10/23/2023] [Indexed: 10/25/2023]
Abstract
Herein, we have specifically designed two metalated porous organic polymers (Zn-POP and Co-POP) for syngas (CO+H2 ) production from gaseous CO2 . The variable H2 /CO ratio of syngas with the highest efficiency was produced in water medium (without an organic hole scavenger and photosensitizer) by utilizing the basic principle of Lewis acid/base chemistry. Also, we observed the formation of entirely different major products during photocatalytic CO2 reduction and water splitting with the help of the two catalysts, where CO (145.65 μmol g-1 h-1 ) and H2 (434.7 μmol g-1 h-1 ) production were preferentially obtained over Co-POP & Zn-POP, respectively. The higher electron density/better Lewis basic nature of Co-POP was investigated further using XPS, XANES, and NH3 -TPD studies, which considerably improve CO2 activation capacity. Moreover, the structure-activity relationship was confirmed via in situ DRIFTS and DFT studies, which demonstrated the formation of COOH* intermediate along with the thermodynamic feasibility of CO2 reduction over Co-POP while water splitting occurred preferentially over Zn-POP.
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Affiliation(s)
- Ratul Paul
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500 007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Risov Das
- New Chemistry Unit and School of Advanced Materials, Jawaharlal Nehru Centre forAdvanced Scientific Research, Jakkur, Bangalore-560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India
| | - Nitumani Das
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500 007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Subhajit Chakraborty
- New Chemistry Unit and School of Advanced Materials, Jawaharlal Nehru Centre forAdvanced Scientific Research, Jakkur, Bangalore-560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Centre, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Quang Thang Trinh
- Queensland Micro- and Nanotechnology Centre, Griffith University, Brisbane, 4111, Australia
| | | | - John Mondal
- Department of Catalysis & Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500 007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sebastian C Peter
- New Chemistry Unit and School of Advanced Materials, Jawaharlal Nehru Centre forAdvanced Scientific Research, Jakkur, Bangalore-560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India
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37
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Hota SK, Murarka S. Visible Light-Induced Imide Alkylation of Azauracils with Aryl Diazoesters. Chem Asian J 2023:e202301027. [PMID: 38052726 DOI: 10.1002/asia.202301027] [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: 11/21/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 12/07/2023]
Abstract
A visible light-induced green and sustainable N-H functionalization of (aza)uracils with α-diazo esters leading to imide alkylation is described. The reaction does not require any catalyst or additive and proceeds under mild conditions. Moreover, an intriguing three component coupling was observed when (aza)uracils were allowed to react with α-diazo esters in cyclic ethers (e. g. 1,4-dioxane, THF) as a solvent. Both the insertion and three-component coupling features broad scope with good to excellent yields and appreciable functional group tolerance. Notably, the divergent method enables modification of natural products and pharmaceuticals, thereby facilitates access to potentially biologically active compounds.
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Affiliation(s)
- Sudhir Kumar Hota
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, 342037, Rajasthan, India
| | - Sandip Murarka
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, 342037, Rajasthan, India
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38
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Kumar Chouhan K, Nad P, Mukherjee A. Dual Role of TiO(acac) 2 as a Reagent and an Activator/Catalyst: A Study on the Solvent Dependent Product Formation. Chem Asian J 2023; 18:e202300738. [PMID: 37782026 DOI: 10.1002/asia.202300738] [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: 08/22/2023] [Revised: 09/30/2023] [Accepted: 10/02/2023] [Indexed: 10/03/2023]
Abstract
The dual operation of a chemical species in synthetic chemistry is an intriguing and relatively unexplored phenomenon. The application of such a species is expected to reduce the use of multiple reaction partners and catalysts/activators. Herein, we report a simple and easy-to-use protocol for the twin application of TiO(acac)2 , as a reagent and an activator to synthesize β-enamino ketones with amines in acetonitrile. The same early transition metal precursor when employed in N,N-dimethylformamide with the amines, resulted in the formation of the substituted amides. Both reactions were explored with various substrates to check the viability of the present protocol. Moreover, experimental studies were conducted to understand the mechanism of both reactions.
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Affiliation(s)
- Kishor Kumar Chouhan
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| | - Pinaki Nad
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| | - Arup Mukherjee
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
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39
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Singh PR, Goar H, Paul P, Mehta K, Bamniya B, Vijjamarri AK, Bansal R, Khan H, Karthikeyan S, Sarkar D. Dual functioning by the PhoR sensor is a key determinant to Mycobacterium tuberculosis virulence. PLoS Genet 2023; 19:e1011070. [PMID: 38100394 PMCID: PMC10723718 DOI: 10.1371/journal.pgen.1011070] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 11/16/2023] [Indexed: 12/17/2023] Open
Abstract
PhoP-PhoR, one of the 12 two-component systems (TCSs) that empower M. tuberculosis to sense and adapt to diverse environmental conditions, remains essential for virulence, and therefore, represents a major target to develop novel anti-TB therapies. Although both PhoP and PhoR have been structurally characterized, the signal(s) that this TCS responds to remains unknown. Here, we show that PhoR is a sensor of acidic pH/high salt conditions, which subsequently activate PhoP via phosphorylation. In keeping with this, transcriptomic data uncover that acidic pH- inducible expression of PhoP regulon is significantly inhibited in a PhoR-deleted M. tuberculosis. Strikingly, a set of PhoP regulon genes displayed a low pH-dependent activation even in the absence of PhoR, suggesting the presence of non-canonical mechanism(s) of PhoP activation. Using genome-wide interaction-based screening coupled with phosphorylation assays, we identify a non-canonical mechanism of PhoP phosphorylation by the sensor kinase PrrB. To investigate how level of P~PhoP is regulated, we discovered that in addition to its kinase activity PhoR functions as a phosphatase of P~PhoP. Our subsequent results identify the motif/residues responsible for kinase/phosphatase dual functioning of PhoR. Collectively, these results uncover that contrasting kinase and phosphatase functions of PhoR determine the homeostatic mechanism of regulation of intra-mycobacterial P~PhoP which controls the final output of the PhoP regulon. Together, these results connect PhoR to pH-dependent activation of PhoP with downstream functioning of the regulator. Thus, PhoR plays a central role in mycobacterial adaptation to low pH conditions within the host macrophage phagosome, and a PhoR-deleted M. tuberculosis remains significantly attenuated in macrophages and animal models.
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Affiliation(s)
| | - Harsh Goar
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
| | - Partha Paul
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
| | - Khushboo Mehta
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Bhanwar Bamniya
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | | | - Roohi Bansal
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
| | - Hina Khan
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
| | - Subramanian Karthikeyan
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Dibyendu Sarkar
- CSIR-Institute of Microbial Technology, Sector 39 A, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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40
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Vijay Gone N, Ghalib Enayathullah M, Thomas J, Rathee P, Prabhakar R, Kumar Bokara K, Sanjayan GJ. Discovery of SARS-CoV-2 Inhibitors Featuring Novel Histidine α-Nitrile Motif. Chem Biodivers 2023; 20:e202300957. [PMID: 37888938 DOI: 10.1002/cbdv.202300957] [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] [Received: 06/30/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 10/28/2023]
Abstract
As COVID-19 infection caused severe public health concerns recently, the development of novel antivirals has become the need of the hour. Main protease (Mpro ) has been an attractive target for antiviral drugs since it plays a vital role in polyprotein processing and virus maturation. Herein we report the discovery of a novel class of inhibitors against the SARS-CoV-2, bearing histidine α-nitrile motif embedded on a simple dipeptide framework. In-vitro and in-silico studies revealed that the histidine α-nitrile motif envisioned to target the Mpro contributes to the inhibitory activity. Among a series of dipeptides synthesized featuring this novel structural motif, some dipeptides displayed strong viral reduction (EC50 =0.48 μM) with a high selectivity index, SI>454.54. These compounds also exhibit strong binding energies in the range of -28.7 to -34.2 Kcal/mol. The simple dipeptide structural framework, amenable to quick structural variations, coupled with ease of synthesis from readily available commercial starting materials are the major attractive features of this novel class of SARS-CoV-2 inhibitors. The histidine α-nitrile dipeptides raise the hope of discovering potent drug candidates based on this motif to fight the dreaded SARS-CoV-2.
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Affiliation(s)
- Nilu Vijay Gone
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Mohammed Ghalib Enayathullah
- Annexe-II, Medical Biotechnology Complex, CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, Telangana, 500007, India
| | - Jessie Thomas
- Annexe-II, Medical Biotechnology Complex, CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, Telangana, 500007, India
| | - Parth Rathee
- Department of Chemistry, University of Miami, Coral Gables, FL, USA
| | - Rajeev Prabhakar
- Department of Chemistry, University of Miami, Coral Gables, FL, USA
| | - Kiran Kumar Bokara
- Annexe-II, Medical Biotechnology Complex, CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, Telangana, 500007, India
| | - Gangadhar J Sanjayan
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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41
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Kaur G, Kaur V, Kaur N, Kaur C, Sood K, Shanavas A, Sen T. Design of Silica@Au Hybrid Nanostars for Enhanced SERS and Photothermal Effect. Chemphyschem 2023; 24:e202200809. [PMID: 37515550 DOI: 10.1002/cphc.202200809] [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: 11/04/2022] [Revised: 04/21/2023] [Accepted: 07/25/2023] [Indexed: 07/31/2023]
Abstract
Core-shell nanostructures of silicon oxide@noble metal have drawn a lot of interest due to their distinctive characteristics and minimal toxicity with remarkable biocompatibility. Due to the unique property of localized surface plasmon resonance (LSPR), plasmonic nanoparticles are being used as surface-enhanced Raman scattering (SERS) based detection of pollutants and photothermal (PT) agents in cancer therapy. Herein, we demonstrate the synthesis of multifunctional silica core - Au nanostars shell (SiO2 @Au NSs) nanostructures using surfactant free aqueous phase method. The SERS performance of the as-synthesized anisotropic core-shell NSs was examined using Rhodamine B (RhB) dye as a Raman probe and resulted in strong enhancement factor of 1.37×106 . Furthermore, SiO2 @Au NSs were also employed for PT killing of breast cancer cells and they exhibited a concentration-dependent increase in the photothermal effect. The SiO2 @Au NSs show remarkable photothermal conversion efficiency of up to 72 % which is unprecedented. As an outcome, our synthesized NIR active SiO2 @Au NSs are of pivotal importance to have their dual applications in SERS enhancement and PT effect.
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Affiliation(s)
- Gagandeep Kaur
- Institute of Nano Science and Technology, Sector- 81, Knowledge city, 140306, Mohali, India
| | - Vishaldeep Kaur
- Institute of Nano Science and Technology, Sector- 81, Knowledge city, 140306, Mohali, India
| | - Navneet Kaur
- Institute of Nano Science and Technology, Sector- 81, Knowledge city, 140306, Mohali, India
| | - Charanleen Kaur
- Institute of Nano Science and Technology, Sector- 81, Knowledge city, 140306, Mohali, India
| | - Kritika Sood
- Institute of Nano Science and Technology, Sector- 81, Knowledge city, 140306, Mohali, India
| | - Asifkhan Shanavas
- Institute of Nano Science and Technology, Sector- 81, Knowledge city, 140306, Mohali, India
| | - Tapasi Sen
- Institute of Nano Science and Technology, Sector- 81, Knowledge city, 140306, Mohali, India
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42
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Babu R, Sukanya Padhy S, Kumar R, Balaraman E. Catalytic Amination of Alcohols Using Diazo Compounds under Manganese Catalysis Through Hydrogenative N-Alkylation Reaction. Chemistry 2023; 29:e202302007. [PMID: 37486329 DOI: 10.1002/chem.202302007] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
Sustainable chemical production requires fundamentally new types of catalysts and catalytic technologies. The development of coherent and robust catalytic systems based on earth-abundant transition metals is essential, but highly challenging. Herein, we systematically explored a general hydrogenative cleavage/N-alkylation tandem of cyclic and acyclic diazo (N=N) compounds to value-added amines under manganese catalysis. The reaction is catalyzed by a single-site molecular manganese complex and proceeds via tandem dehydrogenation, transfer hydrogenation, and borrowing hydrogenation strategies. Interestingly, the reaction involves abundantly available renewable feedstocks, such as alcohols, that can act as (transfer)hydrogenating and alkylating agents. The synthetic application of our approach in large-scale pharmaceutical synthesis and easy access to highly demanding N-CH3 /CD3 derivatives are also demonstrated. Kinetic studies show that the reaction rate depends on the concentration of alcohol and Mn-catalyst and follows fractional orders. Several selective bond activation/formation reactions occur sequentially via amine-amide metal-ligand cooperation.
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Affiliation(s)
- Reshma Babu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, Andhra Pradesh, India
| | - Subarna Sukanya Padhy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, Andhra Pradesh, India
| | - Rohit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, Andhra Pradesh, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati, 517507, Andhra Pradesh, India
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43
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Maji S, Natarajan R. A Halogen-Bonded Organic Framework (XOF) Emissive Cocrystal for Acid Vapor and Explosive Sensing, and Iodine Capture. Small 2023; 19:e2302902. [PMID: 37394720 DOI: 10.1002/smll.202302902] [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] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/19/2023] [Indexed: 07/04/2023]
Abstract
There is a strong and urgent need for efficient materials that can capture radioactive iodine atoms from nuclear waste. This work presents a novel strategy to develop porous materials for iodine capture by employing halogen bonding, mechanochemistry and crystal engineering. 3D halogen-bonded organic frameworks (XOFs) with guest-accessible permanent pores are exciting targets in crystal engineering for developing functional materials, and this work reports the first example of such a structure. The new-found XOF, namely TIEPE-DABCO, exhibits enhanced emission in the solid state and turn-off emission sensing of acid vapors and explosives like picric acid in nanomolar quantity. TIEPE-DABCO captures iodine from the gas phase (3.23 g g-1 at 75 °C and 1.40 g g-1 at rt), organic solvents (2.1 g g-1 ), and aqueous solutions (1.8 g g-1 in the pH range of 3-8); the latter with fast kinetics. The captured iodine can be retained for more than 7 days without any leaching, but readily released using methanol, when required. TIEPE-DABCO can be recycled for iodine capture several times without any loss of storage capacity. The results presented in this work demonstrate the potential of mechanochemical cocrystal engineering with halogen bonding as an approach to develop porous materials for iodine capture and sensing.
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Affiliation(s)
- Suman Maji
- Organic and Medicinal Chemistry, CSIR-Indian Institute of Chemical Biology, 4 Raja S C Mullick Road, Kolkata, 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ramalingam Natarajan
- Organic and Medicinal Chemistry, CSIR-Indian Institute of Chemical Biology, 4 Raja S C Mullick Road, Kolkata, 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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44
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Baruah R, Kumar PP, Gangani S, Prashanth KVH, Halami PM. Structural characteristics and functional properties of a fucose containing prebiotic exopolysaccharide from Bifidobacterium breve NCIM 5671. J Appl Microbiol 2023; 134:lxad262. [PMID: 37951296 DOI: 10.1093/jambio/lxad262] [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] [Received: 02/02/2023] [Revised: 09/26/2023] [Accepted: 11/09/2023] [Indexed: 11/13/2023]
Abstract
AIM To evaluate the structure and functions of capsular exopolysaccharide (CPS) from Bifidobacterium breve NCIM 5671. METHODS AND RESULTS A CPS produced by the probiotic bacteria B. breve NCIM 5671 was isolated and subjected to characterization through GC analysis, which indicated the presence of rhamnose, fucose, galactose, and glucose in a molar ratio of 3:1:5:3. The average molecular weight of the CPS was determined to be ∼8.5 × 105 Da. Further, NMR analysis revealed the probable CPS structure to be composed of major branched tetra- and penta-saccharide units alternately repeating and having both α- and β-configuration sugar residues. CPS displayed an encouraging prebiotic score for some of the studied probiotic bacteria. Compared to standard inulin, CPS showed better resistance to digestibility against human GI tract in vitro. DPPH, total antioxidant, and ferric reducing assays carried out for CPS displayed decent antioxidant activity too. CONCLUSION This study indicates that the CPS from B. breve NCIM 5671 has the potential to be utilized as a prebiotic food supplement. It is a high-molecular-weight (∼8.5 × 105 Da) capsular heteropolysaccharide containing rhamnose, fucose, galactose, and glucose.
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Affiliation(s)
- Rwivoo Baruah
- Department of Microbiology and Fermentation Technology, CSIR-Central Food Technological Research Institute, Mysuru 570020, India
| | - P Pramod Kumar
- Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysuru 570020, India
| | - Surabhi Gangani
- Department of Microbiology and Fermentation Technology, CSIR-Central Food Technological Research Institute, Mysuru 570020, India
| | - K V Harish Prashanth
- Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysuru 570020, India
| | - Prakash M Halami
- Department of Microbiology and Fermentation Technology, CSIR-Central Food Technological Research Institute, Mysuru 570020, India
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45
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Mittal S, Jena MK, Pathak B. Protein Sequencing with Artificial Intelligence: Machine Learning Integrated Phosphorene Nanoslit. Chemistry 2023; 29:e202301667. [PMID: 37548585 DOI: 10.1002/chem.202301667] [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: 05/25/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/08/2023]
Abstract
Achieving high throughput protein sequencing at single molecule resolution remains a daunting challenge. Herein, relying on a solid-state 2D phosphorene nanoslit device, an extraordinary biosensor to rapidly identify the key signatures of all twenty amino acids using an interpretable machine learning (ML) model is reported. The XGBoost regression algorithm allows the determination of the transmission function of all twenty amino acids with high accuracy. The resultant ML and DFT studies reveal that it is possible to identify individual amino acids through transmission and current signals readouts with high sensitivity and selectivity. Moreover, we thoroughly compared our results to those from graphene nanoslit and found that the phosphorene nanoslit device can be an ideal candidate for protein sequencing up to a 20-fold increase in transmission sensitivity. The present study facilitates high throughput screening of all twenty amino acids and can be further extended to other biomolecules for disease diagnosis and therapeutic decision making.
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Affiliation(s)
- Sneha Mittal
- Department of Chemistry, Indian Institute of Technology (IIT) Indore, Indore, Madhya Pradesh, 453552, India
| | - Milan Kumar Jena
- Department of Chemistry, Indian Institute of Technology (IIT) Indore, Indore, Madhya Pradesh, 453552, India
| | - Biswarup Pathak
- Department of Chemistry, Indian Institute of Technology (IIT) Indore, Indore, Madhya Pradesh, 453552, India
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46
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Chowdhury D, Mukherjee A. Easy Access to Tertiary Amines from Carbonyl Compounds with Substituted Amine-Boranes: A Substrate, Catalyst, and Additive-Free Approach Under Mild Conditions. Chem Asian J 2023; 18:e202300661. [PMID: 37671911 DOI: 10.1002/asia.202300661] [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: 07/30/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 09/07/2023]
Abstract
Tertiary amines are ubiquitous and play an essential role in organocatalysis, pharmaceuticals, and fine chemicals. Amongst various synthetic procedures known for their synthesis, the reductive amination of carbonyl compounds has been found to be a proficient method. Over the past few decades, different synthetic strategies for reductive amination have been developed. Most of them suffer from the use of transition metals and/or harsh reaction conditions. Herein, we present an efficient, operationally simple protocol for the chemoselective transformation of carbonyl compounds to tertiary amines under benign conditions. The strategy encompasses a broad substrate scope under the metal-free condition at room temperature and does not require any solvent. A detailed mechanistic investigation was performed with the aid of control experiments and computational study to shed light on the reaction pathway.
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Affiliation(s)
- Deep Chowdhury
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India
| | - Arup Mukherjee
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India
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47
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Kumar S, Ali Shah B. Exploring the Divergent Reactivity of Vinyl Radicals Emanating from Alkynes and Thiols via Photoredox Catalysis. Chem Asian J 2023; 18:e202300693. [PMID: 37656003 DOI: 10.1002/asia.202300693] [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: 08/12/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/02/2023]
Abstract
Organic chemistry has seen a surge in visible-light-driven transformations, which offer unique reaction pathways and access to new synthetic possibilities. We aim to provide a comprehensive understanding of state-of-the-art photo-mediated alkyne functionalization, with a focus on the reactive behavior of vinyl radicals. This review outlines our contributions to the field, including developing new methods for forming carbon-carbon and carbon-heteroatom bonds.
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Affiliation(s)
- Sourav Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001, India
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001, India
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48
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Arora S, Gupta P. Counter-Anions Rendered Weak-Interactions Perturb the Stability of Tyrosinase-Mimicked Peroxo-Dicopper(II) Active Site: Unraveling Computational Indicators. Chem Asian J 2023; 18:e202300688. [PMID: 37679940 DOI: 10.1002/asia.202300688] [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: 08/07/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/09/2023]
Abstract
It has been observed in literature that the stability of tyrosinase-mimicked μ-η2 :η2 -peroxo-dicopper(II) (P) can be perturbed in presence of counter-anions (CAs) such as PhCO2 - , CF3 SO3 - , TsO- and SbF6 - . In this work, we unravel computational indicators using density functional theory to screen and study the stability of P in experimentally-reported cases. These indicators are Gibbs energies, geometrical parameters such as distances and angles, independent gradient model based on Hirshfeld partition (IGMH) generated data, orbitals' overlap, and distortion-interaction (DI) energies. Our DFT computed Gibbs energies indicate that P is stable in case of PhCO2 - and TsO- . CF3 SO3 - allows P and its isoelectronic species bis-μ-oxo-dicopper (O) to coexist. SbF6 - shows that O is in excess. Our indicators reveal that the stability of P in case of PhCO2 - and TsO- is due to the better placing of P and its CA, thus leading to better interactions and overlap of orbitals. Other indicator displays that the plane of Cu2 O2 core in P is more bend in PhCO2 - and TsO- cases as compared to the plane in the other two cases. In addition, the IGMH-based indicator displays higher values in the case of PhCO2 - and TsO- than the other CAs.
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Affiliation(s)
- Sumangla Arora
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Puneet Gupta
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
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49
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Tiwari P, Shivhare V, Ahuja R, Khan N, Shukla DN, Mishra AK, Basu A, Dutt Konar A. A Homochiral Diphenylalanine Analog Based Mechanoresponsive Hydrogel: An Insight Towards Its Wound Healing Efficacy. Chem Biodivers 2023; 20:e202300622. [PMID: 37615615 DOI: 10.1002/cbdv.202300622] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 08/24/2023] [Accepted: 08/24/2023] [Indexed: 08/25/2023]
Abstract
Deciphering the most promising strategy for the evolution of potential wound-healing therapeutics is one of the greatest challenging affairs to date. The development of peptide-based smart scaffolds with innate antimicrobial, anti-inflammatory, and antioxidant properties is an appealing way out. Aligned to the goal a set of Hydrogelators I-IV were developed utilizing the concept of chiral orchestration in diphenylalanine fragment, such that the most potent construct with all the bench marks namely mechanoresponsiveness, biocompatibility, consistent antimicrobial and antioxidant properties, could be fished out from the design. Interestingly, our in vitro Antifungal and Lipid peroxidation analysis identified the homochiral isomer Boc-δ-Ava-L-Phe-L-Phe-OH (Hydrogelator I), as an ideal candidate for the wound healing experiment, so we proceeded for the in vivo histopathological and antioxidant measurements in Wister rats. Indeed the wound images obtained from the different sets of animals on the 14th day of treatment demonstrated that with increased recovery time, hydrogelator I displayed a significant reduction in the lesion diameter compared to the marketed drug, and negative control. Even the histopathological measurements using H & E staining demonstrated diminished tissue destruction, neutrophil infiltration necrosis, and lymphatic proliferation in the hydrogelators, in comparison to others, backed by in vivo lipid peroxidation data. Overall our investigation certifies hydrogelator I as an effective therapeutic for managing the wound healing complication.
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Affiliation(s)
- Priyanka Tiwari
- Department of Applied Chemistry, Rajiv Gandhi Technological University, Bhopal, 462033, Madhya Pradesh, India
| | - Vaibhav Shivhare
- Department of Applied Chemistry, Rajiv Gandhi Technological University, Bhopal, 462033, Madhya Pradesh, India
| | - Rishabh Ahuja
- Department of Applied Chemistry, Rajiv Gandhi Technological University, Bhopal, 462033, Madhya Pradesh, India
| | - Naureen Khan
- Department of Applied Chemistry, Rajiv Gandhi Technological University, Bhopal, 462033, Madhya Pradesh, India
| | - Durgesh Nandan Shukla
- Faculty of Pharmacy, VNS Group of Institutions, Bhopal, 462044, Madhya Pradesh, India
| | - Ankit K Mishra
- Faculty of Pharmacy, VNS Group of Institutions, Bhopal, 462044, Madhya Pradesh, India
| | - Anindya Basu
- School of Pharmaceutical Sciences, Rajiv Gandhi Technological University, Bhopal, India
- University Grants Commission, New Delhi -, 110002, New Delhi, India
| | - Anita Dutt Konar
- Department of Applied Chemistry, Rajiv Gandhi Technological University, Bhopal, 462033, Madhya Pradesh, India
- School of Pharmaceutical Sciences, Rajiv Gandhi Technological University, Bhopal, India
- University Grants Commission, New Delhi -, 110002, New Delhi, India
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50
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Nagendla NK, Subrahanyam SB, Konda S, Mudiam MKR. Development of liquid chromatography-triple quadrupole mass spectrometric method for the quantitative determination of a novel adjuvant, Imidazoquinoline gallamide in aluminum hydroxide gel-Imidazoquinoline gallamide and COVAXIN. J Sep Sci 2023; 46:e2300380. [PMID: 37609812 DOI: 10.1002/jssc.202300380] [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] [Received: 06/02/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/24/2023]
Abstract
Imidazoquinoline gallamide is a toll-like receptor 7/8 agonist, belongs to the imidazoquinoline class, has the potential to activate antigen-presenting cells, and enhances immune response, primarily Th1 response. The COVAXIN is a whole virion inactivated Coronavirus disease 2019 vaccine formulated with this novel adjuvant called, aluminum hydroxide gel Imidazoquinoline gallamide, wherein, Imidazoquinoline gallamide is chemisorbed onto aluminum hydroxide gel. Herein, an analytical method based on liquid chromatography-tandem mass spectrometry was developed to identify and quantify Imidazoquinoline gallamide in aluminum hydroxide gel Imidazoquinoline gallamide and COVAXIN. The multiple reaction monitoring transitions were optimized for Imidazoquinoline gallamide quantification are [M+H]+ ions with 512.24→343.19 m/z (quantifier ion) and 512.24→360.22 m/z (qualifier ion). The developed method was validated as per the international conference on harmonization quality2 revison1 guidelines. The method was linear in the range of 0.025-10 µg/mL with a coefficient of determination of 0.9985 and the limit of quantification is 0.025 µg/mL. The accuracy was in the range of 82-121 % and intra- and inter-day precision was less than 7.1% and 5.39%, respectively. The expanded uncertainty results are 9.2% for Imidazoquinoline gallamide in the sample. The validated method was successfully applied to evaluate Imidazoquinoline gallamide concentration in every batch of COVAXIN.
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Affiliation(s)
- Narendra Kumar Nagendla
- Analytical and Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
- Department of Analytical and Structural Chemistry, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Seetha Bala Subrahanyam
- Analytical and Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
- Department of Analytical and Structural Chemistry, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Satyanand Konda
- Analytical and Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
- Department of Analytical and Structural Chemistry, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Mohana Krishna Reddy Mudiam
- Analytical and Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
- Department of Analytical and Structural Chemistry, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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