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Bonda R, Mishra N, Bhatia A, Prajapati KP, Acharya AY, Manjunathan T, Gopinath P, Kar K, Anand BG. Tailoring the Molecular Structure of 6-Gingerol for Targeting the Phase Separation in Human Lysozyme. J Phys Chem Lett 2024; 15:8032-8041. [PMID: 39083215 DOI: 10.1021/acs.jpclett.4c01218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2024]
Abstract
Human lysozyme undergoes a phase-separation process to form insoluble amyloid-architects that cause several pathologies including systemic amyloidosis. Here we have tailored 6-gingerol by extending its molecular framework with active functional groups to specifically target lysozyme phase-transition events. Aggregation assay revealed that tailored 6-gingerol with 4-aromatic moieties (MTV4) substantially suppressed the conversion of the lysozyme low-density liquid phase (LDLP) to solid-phase structured amyloids. The data obtained from biophysical, computational, and microscopic imaging tools suggest direct intervention of MTV4 with the liquid-liquid phase separation. The CD data suggest that MTV4 was able to retain the native conformation of lysozyme. Both biomolecular and computational data reveal the interference of MTV4 with the aggregation-prone hydrophobic stretches within the lysozyme, thereby retaining the native structure and reversing the misfolded intermediates to active monomers. Also, MTV4 was able to induce rapid dissolution of preformed-toxic amyloid fibrils. These results reinforce the importance of the aromatic-aromatic interaction in preventing human lysozyme phase separation.
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Affiliation(s)
- Ridhiee Bonda
- Biomolecular Self-Assembly Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
| | - Nishant Mishra
- Biomolecular Self-Assembly Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
| | - Anubhuti Bhatia
- Biomolecular Self-Assembly Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
| | - Kailash Prasad Prajapati
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Aditya Yogesh Acharya
- Biomolecular Self-Assembly Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
| | - Tamilvelan Manjunathan
- Department of Chemistry, SRM-Institute of Science and Technology, Kattankulathur, Chennai, 603203 Tamil Nadu, India
| | - Pushparathinam Gopinath
- Department of Chemistry, SRM-Institute of Science and Technology, Kattankulathur, Chennai, 603203 Tamil Nadu, India
| | - Karunakar Kar
- Biophysical and Biomaterials Research Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Bibin Gnanadhason Anand
- Biomolecular Self-Assembly Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
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Arasu A, Prabha N, Devi D, Issac PK, Alarjani KM, Al Farraj DA, Aljeidi RA, Hussein DS, Mohan M, Tayyeb JZ, Guru A, Arockiaraj J. Antimicrobial Efficacy of Allium cepa and Zingiber officinale Against the Milk-Borne Pathogen Listeria monocytogenes. J Microbiol 2023; 61:993-1011. [PMID: 38048022 DOI: 10.1007/s12275-023-00086-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/13/2023] [Accepted: 09/20/2023] [Indexed: 12/05/2023]
Abstract
Listeria monocytogenes is an important food-borne pathogen that causes listeriosis and has a high case fatality rate despite its low incidence. Medicinal plants and their secondary metabolites have been identified as potential antibacterial substances, serving as replacements for synthetic chemical compounds. The present studies emphasize two significant medicinal plants, Allium cepa and Zingiber officinale, and their efficacy against L. monocytogenes. Firstly, a bacterial isolate was obtained from milk and identified through morphology and biochemical reactions. The species of the isolate were further confirmed through 16S rRNA analysis. Furthermore, polar solvents such as methanol and ethanol were used for the extraction of secondary metabolites from A. cepa and Z. officinale. Crude phytochemical components were identified using phytochemical tests, FTIR, and GC-MS. Moreover, the antibacterial activity of the crude extract and its various concentrations were tested against L. monocytogenes. Among all, A. cepa in methanolic extracts showed significant inhibitory activity. Since, the A. cepa for methanolic crude extract was used to perform autography to assess its bactericidal activity. Subsequently, molecular docking was performed to determine the specific compound inhibition. The docking results revealed that four compounds displayed strong binding affinity with the virulence factor Listeriolysin-O of L. monocytogenes. Based on the above results, it can be concluded that the medicinal plant A. cepa has potential antibacterial effects against L. monocytogenes, particularly targeting its virulence.
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Affiliation(s)
- Abirami Arasu
- Department of Microbiology, SRM Arts and Science College, Kattankulathur, Chennai, Tamil Nadu, 603203, India.
| | - Nagaram Prabha
- Department of Microbiology, SRM Arts and Science College, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - Durga Devi
- Department of Microbiology, SRM Arts and Science College, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - Praveen Kumar Issac
- Institute of Biotechnology, Department of Medical Biotechnology and Integrative Physiology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, 602105, India
| | - Khaloud Mohammed Alarjani
- Department of Botany and Microbiology, College of Science, King Saud University, P.O.2455, 11451, Riyadh, Saudi Arabia
| | - Dunia A Al Farraj
- Department of Botany and Microbiology, College of Science, King Saud University, P.O.2455, 11451, Riyadh, Saudi Arabia
| | - Reem A Aljeidi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O.2455, 11451, Riyadh, Saudi Arabia
| | - Dina S Hussein
- Department of Chemistry, College of Sciences and Health, Cleveland State University, Cleveland, 44115, USA
| | - Magesh Mohan
- Saveetha College of Pharmacy, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, Tamil Nadu, 602105, India
| | - Jehad Zuhair Tayyeb
- Department of Clinical Biochemistry, College of Medicine, University of Jeddah, 23890, Jeddah, Saudi Arabia.
| | - Ajay Guru
- Department of Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 600077, India.
| | - Jesu Arockiaraj
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu District, Tamil Nadu, 603203, India.
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