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Venkatachalam G, Giri J, Mallik S, Arumugam GS, Arulmani M, Dewangan VK, Doble M, Zhao Z. Immunomodulatory zymosan/ι-carrageenan/ agarose hydrogel for targeting M2 to M1 macrophages (antitumoral). RSC Adv 2024; 14:11694-11705. [PMID: 38605900 PMCID: PMC11008189 DOI: 10.1039/d3ra06978h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 04/01/2024] [Indexed: 04/13/2024] Open
Abstract
Several studies have been performed on the immunomodulatory effects of yeast β-(1,3) glucan, but there is no proper evaluation of the thermal and immunomodulating properties of zymosan (ZM). Thermogravimetry analysis indicated a 54% weight loss of ZM at 270 °C. Circular dichroism showed absorption peaks in the region of 250 to 400 nm, suggesting a helical coil β-sheet configuration. XRD showed a broad peak at 2θ of 20.38°, indicating the crystalline nature, and the size was found to be 23 nm. ZM is biocompatible and showed no toxicity against L929 and RAW 264.7 cell lines (cell viability > 90%). Immunomodulatory studies with PCR showed upregulation of M1 genes in human differentiated THP-1 macrophage cell lines, which were responsible for antitumor properties. The uptake of ZM particles inside the differentiated THP-1 macrophages and Raw 264.7 cells was confirmed (Video clip). ZM particle uptake via Dectin-1 was identified by competitive receptor blocking. Seaweed derived carrageenan/ZM/agarose hydrogel was successfully prepared (@5 : 5 wt%) and was seen to support the growth of L929 cells (1 × 105 cells per mL) and have a higher swelling (≈250-280%). This study indicates that ZM-based hydrogel could be a potential drug carrier (Rifampicin and Levofloxacin) for targeting tumour-associated macrophages (M2).
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Affiliation(s)
- Geetha Venkatachalam
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras 600036 Chennai Tamilnadu India
| | - Jayant Giri
- Department of Mechanical Engineering, Yeshwantrao Chavan College of Engineering Nagpur India
| | - Saurav Mallik
- Department of Pharmacology and Toxicology, University of Arizona Tucson AZ USA
| | | | - Manavalan Arulmani
- Department of Cariology, Saveetha Dental College, SIMATS 600077 Chennai Tamilnadu India
| | - Vimal Kumar Dewangan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras 600036 Chennai India
| | - Mukesh Doble
- Department of Cariology, Saveetha Dental College, SIMATS 600077 Chennai Tamilnadu India
| | - Zhongming Zhao
- McWilliams School of Biomedical Informatics, The University of Texas Health Science Center at Houston Houston TX USA
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Sahu MR, Sampath Kumar TS, Chakkingal U, Dewangan VK, Doble M. Enhancing the degradation rate and biomineralization nature of antiferromagnetic Fe-20Mn alloy by groove pressing. J Biomed Mater Res A 2024. [PMID: 38560769 DOI: 10.1002/jbm.a.37711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/06/2024] [Accepted: 03/15/2024] [Indexed: 04/04/2024]
Abstract
The Fe-Mn alloys are potential candidates for biodegradable implant applications. However, the very low degradation rates of Fe-Mn alloys in the physiological environment are a major disadvantage. In this study, the degradation rate of a Fe-20Mn alloy was improved using the groove pressing (GP) technique. Hot rolled sheets of 2 mm thickness were subjected to GP operation at 1000°C. Uniform fine-grained (UFG) Fe-Mn alloys were obtained using the GP technique. The influence of GP on the microstructure, mechanical properties, degradation behavior in simulated body fluid (SBF), surface wettability, biomineralization, and cytocompatibility was investigated and compared to the annealed (A Fe-Mn) and rolled (R Fe-Mn) sample. The groove-pressed Fe-Mn (G Fe-Mn) alloy had a grain size of approximately 40 ± 16 μm whereas the A Fe-Mn and R Fe-Mn samples had grain sizes of 303 ± 81 and 117 ± 14.5 μm, respectively. Enhanced strength and elongation were also observed with the G Fe-Mn sample. The potentiodynamic polarization test showed the highest Icorr, lowest polarization resistance, and lowest Ecorr for the G Fe-Mn sample among all other samples indicating its higher degradation rate. The weight loss data from immersion tests also shows that the percentage of weight loss increases with time indicating the accelerated degradation behavior of the sample. The static immersion test showed an enhancement in weight loss of 0.46 ± 0.02% and 1.02 ± 0.05% for R Fe-Mn and G Fe-Mn samples, respectively, than A Fe-Mn sample (0.31 ± 0.03%) after 56 days in immersion in SBF. The greater biomineralization tendency in UFG materials is confirmed by the G Fe-Mn sample's stronger hydroxyapatite deposition. When compared to the A Fe-Mn and R Fe-Mn samples, the G Fe-Mn sample has a better wettability, which promotes higher cell adhesion and vitality, showing higher biocompatibility. This study demonstrates that Fe-20Mn processed by GP has potential applications for the manufacture of biodegradable metallic implants.
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Affiliation(s)
- Manas Ranjan Sahu
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
| | - Uday Chakkingal
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
| | - Vimal Kumar Dewangan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
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Dewangan VK, Sampath Kumar TS, Doble M, Daniel Varghese V. Injectable macroporous naturally-derived apatite bone cement as a potential trabecular bone substitute. J Biomed Mater Res B Appl Biomater 2024; 112:e35397. [PMID: 38456309 DOI: 10.1002/jbm.b.35397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/17/2024] [Accepted: 02/18/2024] [Indexed: 03/09/2024]
Abstract
In this study, we have formulated a novel apatite bone cements derived from natural sources (i.e. eggshell and fishbone) with improved qualities that is, porosity, resorbability, biological activity, and so forth. The naturally-derived apatite bone cement (i.e. FBDEAp) was prepared by mixing hydroxyapatite (synthesized from fishbone) and tricalcium phosphate (synthesized from eggshell) as a solid phase with a liquid phase (a dilute acidic blend of cement binding accelerator and biopolymers like gelatin and chitosan) with polysorbate (as liquid porogen) to get a desired bone cement paste. The prepared cement paste sets within the clinically acceptable setting time (≤20 min), easily injectable (>85%) through hands and exhibits physiological pH stability (7.3-7.4). The pure apatite phased bone cement was confirmed by x-ray diffraction and Fourier transform infrared spectroscopy analyses. The FBDEAp bone cement possesses acceptable compressive strength (i.e. 5-7 MPa) within trabecular bone range and is resorbable up to 28% in simulated body fluid solution within 12 weeks of incubation at physiological conditions. The FBDEAp is macroporous in nature (average pore size ~50-400 μm) with interconnected pores verified by SEM and micro-CT analyses. The FBDEAp showed significantly increased MG63 cell viability (>125% after 72 h), cell adhesion, proliferation, and key osteogenic genes expression levels (up to 5-13 folds) compared to the synthetically derived, synthetic and eggshell derived as well as synthetic and fishbone derived bone cements. Thus, we strongly believe that our prepared FBDEAp bone cement can be used as potential trabecular bone substitute in orthopedics.
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Affiliation(s)
- Vimal Kumar Dewangan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
- Department of Cariology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
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Manjunathan R, Mitra K, Vasvani R, Doble M. High molecular weight heparin-induced angiogenesis mainly mediated via basic fibroblast growth factor-2- an in-vivo (CAM) and in-silico analysis. Biochem Biophys Rep 2024; 37:101609. [PMID: 38205188 PMCID: PMC10776434 DOI: 10.1016/j.bbrep.2023.101609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 01/12/2024] Open
Abstract
Background High-molecular weight heparin (HMWH), a molecule extensively used as an anticoagulant, shows concentration-dependent angiogenic and anti-angiogenic potential. So far, no studies have reported the interactive potential of HMWH with various pro-angiogenic growth factors under physiological conditions. Haence, we aimed to find the impact of major pro-angiogenic growth factors under HMWH induced angiogenesis. Methods Chicken Chorioallantoic Membranes (CAMs) are incubated with various concentrations of HMWH. Semiquantitative PCR method was implemented to measure the changes in the transcription level of pro-angiogenic growth factors. The scanning electron microscopic technique is applied to find the morphological changes in CAM. Molecular docking and molecular dynamics simulation studies using NAMD and CHARMM force field discerned the heparin-binding mode with the pro-angiogenic growth factors. Results HMWH can enhance the transcription level of major pro-angiogenic growth factors, significantly impacting FGF2 under 100 μM concentration. The in-silico analysis reveals that HMWH shows the highest binding affinity with FGF2. Further, molecular dynamics and interaction studies using 1 kDa Heparin against FGF2 showed that the former binds stably with the latter due to a strong salt bridge formation between the sulfate groups and arginine residues (ARG 119 and ARG109). Conclusion The combined experimental and in-silico analysis results reveal that HMWH can interact with pro-angiogenic growth factors under micromolar concentration while inducing angiogenesis. This observation further supports the therapeutic benefits of HMWH as an angiogenic factor under such low concentration. This technique is used to replenish the blood supply to chronic wounds to speed healing and prevent unnecessary amputations.
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Affiliation(s)
- Reji Manjunathan
- Department of Genetics, Dr. Alagappa Mudhaliyar Post Graduate Institute of Basic Medical Science, Taramani Campus, University of Madras, Chennai, 600113, Tamil Nadu, India
- Muti-Disciplinary Research Unit, Kottayam Medical College, Kottayam, 686008, Kerala, India
| | - Kartik Mitra
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Rahul Vasvani
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Mukesh Doble
- Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, 600077, Tamil Nadu, India
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Chellachamy Anbalagan A, Korram J, Doble M, Sawant SN. Bio-functionalized carbon dots for signaling immuno-reaction of carcinoembryonic antigen in an electrochemical biosensor for cancer biomarker detection. Discov Nano 2024; 19:37. [PMID: 38421453 PMCID: PMC10904696 DOI: 10.1186/s11671-024-03980-3] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
Early diagnosis of cancer demands sensitive and accurate detection of cancer biomarkers in blood. Carbon dots (CDs) bio-functionalization with antibodies, peptides or aptamers have played significant role in cancer diagnosis and targeted cancer therapy. Herein, a biosensor for detection of cancer biomarker carcinoembryonic antigen (CEA) in blood serum has been designed using CDs bio-functionalized with HRP-conjugated CEA antibody (CUCDs@CEAAb2) as detection probe. CDs were synthesized by upscaling of cow urine, a nitrogen rich biomass waste, by hydrothermal method. Detection probe based on CDs resulted in 3.5 times higher sensitivity as compared to conventional electrochemical sandwich immunoassay. To further improve the sensor performance, hyper-branched polyethylenimine grafted poly amino aniline (PEI-g-PAANI) was used as the sensing interface, which enabled immobilization of higher amount of capture antibody. Detection of CEA in human blood serum coupled with wide linear range (0.5-50 ng/ml), good specificity, stability, reproducibility and low detection limit (10 pg/ml) signified the excellence of CUCDs based CEA immunosensor. CUCDs exhibited excitation wavelength dependent fluorescence property and showed strong blue emission under UV irradiation. MTT assay indicated that the material is not toxic towards human dental pulp stem cells (hDPSCs) and MG63 osteosarcoma cells (cell viability > 90%). The present study demonstrates a methodology for valorization of animal waste to a cost-effective carbon based functional nanomaterial for clinical detection of cancer biomarkers.
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Affiliation(s)
| | - Jyoti Korram
- Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Mukesh Doble
- Department of Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, 600077, India
| | - Shilpa N Sawant
- Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
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Latiyan S, Kumar TSS, Doble M. Functionally multifaceted alginate/curdlan/agarose-based bilayer fibro-porous dressings for addressing full-thickness diabetic wounds. Biomater Adv 2024; 157:213757. [PMID: 38198999 DOI: 10.1016/j.bioadv.2023.213757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/06/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024]
Abstract
Full-thickness diabetic wounds are chronic injuries characterized by bleeding, excessive exude, and prolonged inflammation. Single-layer dressings fail to address their disturbed pathophysiology. Therefore, bilayer dressings with structural and compositional differences in each layer have gained attention. We hypothesized that natural polymer (alginate, curdlan, and agarose) based bilayer dressings with inherent healing properties could effectively resolve these issues. Hence, bilayer dressings were fabricated by electrospinning curdlan/agarose/ polyvinyl alcohol blend (top layer) on an alginate/agarose/polyvinyl alcohol-based lyophilized porous (bottom) layer. Ciprofloxacin was incorporated in both layers as a potential antibacterial drug. The bilayer dressing exhibited high swelling (~1300 %), biocompatibility (>90 % with NIH 3T3 and L929 mouse fibroblasts), and hemocompatibility (hemolysis <5 %). In vitro, scratch assay revealed a faster wound closure (~ 95-100 %) than control. Inhibition zone assay revealed antibacterial activity against Staphylococcus aureus and Escherichia coli. Real-time (in vitro) gene expression experiments performed using human THP-1 macrophages exhibited a significant increase in anti-inflammatory cytokines (4.51 fold in IL-10) and a decrease in pro-inflammatory cytokines (1.42 fold in IL-6) in comparison to lipopolysaccharide. Thus, fabricated dressings with high swelling, hemostatic, immunomodulatory, and antibacterial characteristics can serve as potential multifunctional and sustainable templates for healing full-thickness diabetic wounds.
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Affiliation(s)
- Sachin Latiyan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India; Department of Cariology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai 600077, India
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Karunakaran H, Krithikadatta J, Doble M. Local and systemic adverse effects of nanoparticles incorporated in dental materials- a critical review. Saudi Dent J 2024; 36:158-167. [PMID: 38375379 PMCID: PMC10874805 DOI: 10.1016/j.sdentj.2023.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 08/23/2023] [Accepted: 08/28/2023] [Indexed: 02/21/2024] Open
Abstract
Introduction Nanotechnology is the science and engineering of nanoparticles whose dimensions range from 1 to 100 nm. Nanoparticles have special characteristics like increased surface area, high reactivity, and enhanced mechanical, thermal, and optical properties that make them attractive for use in dental applications. However, the use of nanoparticles in dental materials can have toxic effects on the human body. The objective of this paper is to discuss the toxic effects of various nanoparticles in dental materials, their adverse effect on human health, and measures to overcome such effects. Objectives Nanoparticles are used in the diagnosis, prevention, and treatment of oral diseases like dental caries, pulpo periodontal lesions, oral cancer, denture stomatitis, and candidiasis. Exposure to nanoparticles may occur to the dental professional, and the patient during procedures like restoration, finishing, and polishing. Such exposure to nanoparticles through inhalation, and ingestion causes toxic effects in the lungs, skin, brain, liver, and kidney. Proper risk assessment methods and preventive measures may help reduce these toxic effects to some extent. Significance Toxic effects of nanoparticles that are released during dental procedures, their route of exposure, and the concentration at which nanoparticles can induce toxic effects on the human body are discussed in detail in this review. The paper also aims to create awareness among dental professionals, students, and patients regarding nanoparticle exposure and its adverse effects, and methods to prevent and overcome these effects. Currently, it is ignored or taken lightly by the stakeholders and this review may throw light.
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Affiliation(s)
- Harini Karunakaran
- Department of Conservative Dentistry and Endodontics, SIMATS University, Chennai, India
| | | | - Mukesh Doble
- Department of Cariology, SIMATS University, Chennai, India
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Suresh R, Ramadoss R, Doble M, Ramalingam K, Sundar S, Panneer Selvam S. Targeted Drug Designing for Treating Masticatory Myofascial Pain Dysfunction Syndrome: An In Silico Simulation Study. Cureus 2024; 16:e51661. [PMID: 38313945 PMCID: PMC10838143 DOI: 10.7759/cureus.51661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/04/2024] [Indexed: 02/06/2024] Open
Abstract
Background Masticatory Myofascial Pain Dysfunction Syndrome (MMPDS) is a musculoligamentous disorder that shares similarities with temporomandibular joint pain and odontogenic pain. It manifests as dull or aching pain in masticatory muscles, influenced by jaw movement. Computer-aided drug design (CADD) encompasses various theoretical and computational approaches used in modern drug discovery. Molecular docking is a prominent method in CADD that facilitates the understanding of drug-bimolecular interactions for rational drug design, mechanistic studies & the formation of stable complexes with increased specificity and potential efficacy. The docking technique provides valuable insights into binding energy, free energy, and complex stability predictions. Aim The aim of this study was to use the docking technique for myosin inhibitors. Materials and methods Four inhibitors of myosin were chosen from the literature. These compound structures were retrieved from the Zinc15 database. Myosin protein was chosen as the target and was optimized using the RCSB Protein Data Bank. After pharmacophore modeling, 20 novel compounds were found and the SwissDock was used to dock them with the target protein. We compared the binding energies of the newly discovered compounds to those of the previously published molecules with the target. Results The results indicated that among the 20 molecules ZINC035924607 and ZINC5110352 exhibited the highest binding energy and displayed superior properties compared to the other molecules. Conclusion The study concluded that ZINC035924607 and ZINC5110352 exhibited greater binding affinity than the reported inhibitors of myosin. Therefore, these two molecules can be used as a potential and promising lead for the treatment of MMPDS and could be employed in targeted drug therapy.
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Affiliation(s)
- Ramya Suresh
- Oral Biology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Ramya Ramadoss
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Mukesh Doble
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Karthikeyan Ramalingam
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Sandhya Sundar
- Oral Pathology and Microbiology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical sciences, Saveetha University, Chennai, IND
| | - Suganya Panneer Selvam
- Oral Pathology and Microbiology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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Kumar Dewangan V, Sampath Kumar TS, Doble M, Daniel Varghese V. Fabrication of injectable antibiotic-loaded apatitic bone cements with prolonged drug delivery for treating post-surgery infections. J Biomed Mater Res A 2023; 111:1750-1767. [PMID: 37353879 DOI: 10.1002/jbm.a.37584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/01/2023] [Accepted: 06/05/2023] [Indexed: 06/25/2023]
Abstract
Antibiotic-loaded bioactive bone substitutes are widely used for treating various orthopedic diseases and prophylactically to avoid post implantation infection. Calcium deficient hydroxyapatite (also known as apatitic bone cement) is a potential bioactive bone substitute in orthopedics due to its chemical composition similar to that of natural bone minerals. In this study, fabrication of mannitol (a solid porogen) incorporated injectable synthetic (Syn) and eggshell derived (ESD) apatitic bone cements loaded with antibiotics (gentamicin/meropenem/ rifampicin/vancomycin) was investigated. The release kinetics of the antibiotics were studied by fitting them with different kinetic models. All the antibiotics-loaded apatitic bone cements set within clinically accepted setting time (20 ± 2 min) and with good injectability (>70%). The antibiotics released from these bone cements were found to be controlled and sustained throughout the study time. Weibull and Gompertz (applies in least initial burst and sustain drug release rate models) were the best models to predict the release behavior. They cements had acceptable compressive strength (6-10 MPa; in the range of trabecular bone) and were biodegradable (21%-27% within 12 weeks of incubation) in vitro in simulated body fluids at physiological conditions. These bone cements showed excellent antibacterial activity from day 1 onwards and no bacterial colony was found from day 3 onwards. The viability of MG63 cells in vitro after 72 h was significantly higher after 24 h (i.e., ~110%). The cells were well attached and spread over the surface of the cements with extended morphology. The ESD antibiotic-loaded apatitic bone cements showed better injectability, degradation and cytocompatibility compared when compared to Syn antibiotic-loaded apatitic bone cements. Thus, we believe that the ESD antibiotic-loaded apatitic bone cements are suitable as potential injectable bone substitutes to avoid post-operative implant associated and other acute or chronic bone infections.
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Affiliation(s)
- Vimal Kumar Dewangan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
- Department of Cariology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
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Valan AS, Krithikadatta J, Doble M, Lakshmipathy M. Biomimetic Approach to Counter Streptococcus mutans Biofilm: An In Vitro Study on Seashells. Cureus 2023; 15:e47758. [PMID: 38021608 PMCID: PMC10676292 DOI: 10.7759/cureus.47758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 10/22/2023] [Indexed: 12/01/2023] Open
Abstract
Aim This study aimed to investigate the anti-adherent property of the seashell surface and periostracum to prevent the formation of Streptococcus mutans biofilm. Materials and methods The seashells were initially collected from the natural urban beach, and an antibiofilm assay of the shells with and without periostracum was performed against Streptococcus mutans. Furthermore, the seashells were analyzed with a stylus profilometer (Mitutoyo Surftest SJ-301, Mitutoyo America Corporation, Illinois, USA), atomic force microscope (AFM; Nanosurf Easyscan 2, Nanosurf Inc., USA), contact angle assessment, Fourier-transform infrared (FTIR) spectroscopy analysis, and scanning electron microscopy (SEM; JEOL USA, Inc., FE-SEM IT800, Massachusetts, USA) analysis. The ability of seashells to prevent the attachment of Streptococcus mutans and form a biofilm with and without periostracum was studied by crystal violet assay. Results The results revealed that shells without periostracum promoted higher biofilm formation when compared to those having intact periostracum (by 15%, p<0.001). Shell 1 showed the highest biofilm formation, whereas shell 3 showed the least biofilm formation due to the differences in their surface morphologies. The remaining shells (4, 2, 6, and 5) showed interspersed biofilm formation. Conclusion In summary, our study was able to correlate the topologies of the shell surface with the biofilm formed by Streptococcus mutans with the wetting behavior of those shell surfaces and their roughness. More hydrophobic surfaces (with intact periostracum) were observed to lead to less attachment (correlation coefficient=-0.67). This study can pave the way for designing such biomimetic surfaces to prevent bacterial attachment.
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Affiliation(s)
- Annie Sylvea Valan
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Jogikalmat Krithikadatta
- Cariology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Mukesh Doble
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - M Lakshmipathy
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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Choudhari S, Krithikadatta J, Vejendla I, S S, Doble M. Microbial Interactions in Oral Biofilm: Evaluating Therapeutic Interventions and the Emergence of Resistance: A Narrative Review. Cureus 2023; 15:e48021. [PMID: 38034252 PMCID: PMC10687662 DOI: 10.7759/cureus.48021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
The oral cavity comprises numerous anatomical surfaces that are inhabited by a diverse array of bacteria, collectively forming a bacterial biofilm. Within this complex microbial community, certain bacterial species are etiologically linked to the development of common oral pathologies, such as dental caries and periodontitis, which stand as prominent instances of bacterial infections frequently encountered in clinical settings. Most biofilms are believed to be multispecies consortia. While single-species biofilms have been well-researched, mixed-species biofilms and their interactions amongst themselves have not drawn interest. The aim of the current review was to assess the various interactions of dual-species microorganisms in oral biofilm formation. Farnesol given exogenously for the treatment of biofilm can enhance or inhibit the growth of certain organisms, as seen in Candida albicans. In the age of antibiotic resistance, it is imperative to develop and uncover drugs capable of simultaneously targeting multiple species in order to mitigate antimicrobial resistance.
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Affiliation(s)
- Sahil Choudhari
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS) Saveetha University, Chennai, IND
| | - Jogikalmat Krithikadatta
- Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS) Saveetha University, Chennai, IND
| | - Ipsitha Vejendla
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS) Saveetha University, Chennai, IND
| | - Swathi S
- Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS) Saveetha University, Chennai, IND
| | - Mukesh Doble
- Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS) Saveetha University, Chennai, IND
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12
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S D, Ramani P, Doble M, Ramasubramanian A. Ferroptosis Mediated Novel Drug Design Approach in the Treatment of Oral Squamous Cell Carcinoma. Asian Pac J Cancer Prev 2023; 24:2321-2327. [PMID: 37505762 PMCID: PMC10676479 DOI: 10.31557/apjcp.2023.24.7.2321] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023] Open
Abstract
BACKGROUND Globally, Oral Squamous Cell Carcinoma (OSCC) is the highest prevalent type of oral cancer. Implementing a successful treatment plan for the aforementioned tumor has always been a primary concern. There are numerous targeted therapies of which Ferroptosis has been receiving increasing attention in the recent decade. A novel form of controlled cell death "Ferroptosis' is caused by iron-dependent lipid peroxidation. A well-known mechanism for controlling ferroptosis is the Cysteine/GSH/GPX4 axis, in which System X͞c is crucial. System X͞c inhibitors have been proven earlier to improve chemotherapy sensitivity. MATERIALS AND METHODS Five System X͞c inhibitors were selected from the literature. The structure of these molecules from Zinc15 and the protein sequence of the target from Protein Data Bank were obtained. Twenty new molecules were identified following pharmacophore modeling and were docked with the target protein using SwissDock. The binding energies of the new molecules with the target were compared with that of the reported molecules. RESULT The molecular docking study showed that two new molecules (ZINC89362298 and ZINC1730544) resulted in the highest binding pattern (-8.64) than that of the reported molecules (-7.75). CONCLUSION The present study concluded that ZINC89362298 and ZINC1730544 had better binding efficiencies than that of the reported System xc- inhibitors. Hence these two molecules could be used in targeted drug therapy and could be a promising lead in the management of oral cancer in the future.
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Affiliation(s)
- Dharini S
- Department of Oral and Maxillofacial Pathology, Saveetha Dental College and Hospitals, SIMATS, Chennai, Tamil Nadu, India.
| | - Pratibha Ramani
- Department of Oral and Maxillofacial Pathology, Saveetha Dental College and Hospitals, SIMATS, Chennai, Tamil Nadu, India.
| | - Mukesh Doble
- Department of Conservative Dentistry, Saveetha Dental College, SIMATS, Chennai, Tamil Nadu, India.
| | - Abilasha Ramasubramanian
- Department of Oral and Maxillofacial Pathology, Saveetha Dental College and Hospitals, SIMATS, Chennai, Tamil Nadu, India.
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13
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Latiyan S, Kumar TSS, Doble M, Kennedy JF. Perspectives of nanofibrous wound dressings based on glucans and galactans - A review. Int J Biol Macromol 2023:125358. [PMID: 37330091 DOI: 10.1016/j.ijbiomac.2023.125358] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 06/06/2023] [Accepted: 06/10/2023] [Indexed: 06/19/2023]
Abstract
Wound healing is a complex and dynamic process that needs an appropriate environment to overcome infection and inflammation to progress well. Wounds lead to morbidity, mortality, and a significant economic burden, often due to the non-availability of suitable treatments. Hence, this field has lured the attention of researchers and pharmaceutical industries for decades. As a result, the global wound care market is expected to be 27.8 billion USD by 2026 from 19.3 billion USD in 2021, at a compound annual growth rate (CAGR) of 7.6 %. Wound dressings have emerged as an effective treatment to maintain moisture, protect from pathogens, and impede wound healing. However, synthetic polymer-based dressings fail to comprehensively address optimal and quick regeneration requirements. Natural polymers like glucan and galactan-based carbohydrate dressings have received much attention due to their inherent biocompatibility, biodegradability, inexpensiveness, and natural abundance. Also, nanofibrous mesh supports better proliferation and migration of fibroblasts because of their large surface area and similarity to the extracellular matrix (ECM). Thus, nanostructured dressings derived from glucans and galactans (i.e., chitosan, agar/agarose, pullulan, curdlan, carrageenan, etc.) can overcome the limitations associated with traditional wound dressings. However, they require further development pertaining to the wireless determination of wound bed status and its clinical assessment. The present review intends to provide insight into such carbohydrate-based nanofibrous dressings and their prospects, along with some clinical case studies.
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Affiliation(s)
- Sachin Latiyan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India; Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai 600077, India
| | - John F Kennedy
- Chembiotech Labs, Institute of Science and Technology, Kyrewood House, Tenbury Wells WR158FF, UK
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14
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Latiyan S, Kumar TSS, Doble M. Fabrication and evaluation of agarose-curdlan blend derived multifunctional nanofibrous mats for diabetic wounds. Int J Biol Macromol 2023; 235:123904. [PMID: 36871684 DOI: 10.1016/j.ijbiomac.2023.123904] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/17/2023] [Accepted: 02/27/2023] [Indexed: 03/07/2023]
Abstract
Diabetic wounds with complex pathophysiology significantly burden the wound care industry and require novel management strategies. In the present study, we hypothesized that agarose-curdlan based nanofibrous dressings could be an effective biomaterial for addressing diabetic wounds due to their inherent healing properties. Hence, agarose/curdlan/polyvinyl alcohol based nanofibrous mats loaded with ciprofloxacin (0, 1, 3, and 5 wt%) were fabricated using an electrospinning technique with water and formic acid. In vitro evaluation revealed the average diameter of the fabricated nanofibers between 115 and 146 nm with high swelling (~450-500 %) properties. They exhibited enhanced mechanical strength (7.46 ± 0.80 MPa -7.79 ± 0.007 MPa) and significant biocompatibility (~90-98 %) with L929 and NIH 3T3 mouse fibroblasts. In vitro scratch assay showed higher proliferation and migration of fibroblasts (~90-100 % wound closure) compared to electrospun PVA and control. Significant antibacterial activity was observed against Escherichia coli and Staphylococcus aureus. In vitro real-time gene expression studies with human THP-1 cell line revealed a significant downregulation of pro-inflammatory cytokines (8.64 fold decrease for TNF-α) and upregulation of anti-inflammatory cytokines (6.83 fold increase for IL-10) compared to lipopolysaccharide. In brief, the results advocate agarose-curdlan mat as a potential multifunctional, bioactive, and eco-friendly dressing for healing diabetic wounds.
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Affiliation(s)
- Sachin Latiyan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India; Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai 600077, India
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15
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Sahu MR, Sampath Kumar TS, Chakkingal U, Dewangan VK, Doble M. Influence of fine‐grained structure produced by groove pressing on the properties of pure Mg and commercial
ZE41
alloy. J Biomed Mater Res A 2023. [DOI: 10.1002/jbm.a.37502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Manas Ranjan Sahu
- Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai India
| | - T. S. Sampath Kumar
- Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai India
| | - Uday Chakkingal
- Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai India
| | - Vimal Kumar Dewangan
- Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai India
- Department of Biotechnology Indian Institute of Technology Madras Chennai India
| | - Mukesh Doble
- Department of Biotechnology Indian Institute of Technology Madras Chennai India
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16
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Dewangan VK, Sampath Kumar TS, Doble M, Daniel Varghese V. Fabrication of macroporous apatite bone cements for non-load bearing orthopedic applications. J Biomed Mater Res B Appl Biomater 2023; 111:416-428. [PMID: 36095055 DOI: 10.1002/jbm.b.35160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/11/2022] [Accepted: 08/21/2022] [Indexed: 12/15/2022]
Abstract
Calcium deficient hydroxyapatite (CDHA)-based apatite forming bone cements are well known for their bioactivity and bioresorbability. The formulation of CDHA-based cements with improved macroporosity, injectability, and resorbability has been investigated. The solid phase consists of nanocrystalline hydroxyapatite (HA) and tricalcium phosphate (β-TCP). The liquid phase is diluted acetic acid with disodium hydrogen phosphate as binding accelerator along with gelatin and chitosan to improve the injectability. A porogen agent either mannitol (as solid porogen) or polysorbate (as liquid porogen) is also used to improve the porosity. All combined in fine-tuned composition results in optimal bone cements. The cement sets within the clinically preferred setting time (≤20 min) and injectability (>70%) and also stable at physiological pH (i.e., ~7.3-7.4). The XRD and FT-IR analysis confirmed the formation of CDHA phase on day 7 when the after-set cement immersed under phosphate buffer solution (PBS) at physiological conditions. The cements were found to have acceptable compressive strength for trabecular bone substitute. The cements were macroporous in nature with average pore size between 50 and 150 μm and were interconnected as confirmed by SEM, micro-CT and MIP analysis. The prepared cements are degradable up to 22% and 19% in simulated body fluid and PBS respectively within 10 weeks of immersion at physiological conditions. The cements exhibit higher viability (%) (>110%) with L929 and MG63 cells compared to the control after 3 days of incubation. They also show increased proliferation, well spreading and extended filopodia with MG63 cells. Overall, the developed apatite forming bone cements seems to be suitable for low or non-load bearing orthopedic applications.
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Affiliation(s)
- Vimal Kumar Dewangan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India.,Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | | | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India.,Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
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17
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Perumal G, Pappuru S, Doble M, Chakraborty D, Shajahan S, Abu Haija M. Controlled Synthesis of Dendrite-like Polyglycerols Using Aluminum Complex for Biomedical Applications. ACS Omega 2023; 8:2377-2388. [PMID: 36687077 PMCID: PMC9851026 DOI: 10.1021/acsomega.2c06761] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
This work describes a one-pot synthesis of dendrite-like hyperbranched polyglycerols (HPGs) via a ring-opening multibranching polymerization (ROMBP) process using a bis(5,7-dichloro-2-methyl-8-quinolinolato)methyl aluminum complex (1) as a catalyst and 1,1,1-tris(hydroxymethyl)propane/trimethylol propane (TMP) as an initiator. Single-crystal X-ray diffraction (XRD) analysis was used to elucidate the molecular structure of complex 1. Inverse-gated (IG)13C NMR analysis of HPGs showed degree of branching between 0.50 and 0.57. Gel permeation chromatography (GPC) analysis of the HPG polymers provided low, medium, and high-molecular weight (M n) polymers ranging from 14 to 73 kDa and molecular weight distributions (M w/M n) between 1.16 and 1.35. The obtained HPGs exhibited high wettability with water contact angle between 18 and 21° and T g ranging between -39 and -55 °C. Notably, ancillary ligand-supported aluminum complexes as catalysts for HPG polymerization reactions have not been reported to date. The obtained HPG polymers in the presence of the aluminum complex (1) can be used for various biomedical applications. Here, nanocomposite electrospun fibers were fabricated with synthesized HPG polymer. The nanofibers were subjected to cell culture experiments to evaluate cytocompatibility behavior with L929 and MG63 cells. The cytocompatibility studies of HPG polymer and nanocomposite scaffold showed high cell viability and spreading. The study results concluded, synthesized HPG polymers and composite nanofibers can be used for various biomedical applications.
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Affiliation(s)
- Govindaraj Perumal
- Department
of Conservative Dentistry and Endodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical
and Technical Sciences (SIMATS), Chennai600 077, India
| | - Sreenath Pappuru
- Faculty
of Chemical Engineering and the Grand Technion Energy Program, Technion-Israel Institute of Technology, Haifa320003, Israel
| | - Mukesh Doble
- Department
of Conservative Dentistry and Endodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical
and Technical Sciences (SIMATS), Chennai600 077, India
| | - Debashis Chakraborty
- Department
of Chemistry, Indian Institute of Technology
Madras, Chennai600 036, India
| | - Shanavas Shajahan
- Department
of Chemistry, Khalifa University of Science
and Technology, Abu Dhabi127788, United
Arab Emirates
| | - Mohammad Abu Haija
- Center
for Catalysis and Separations, Khalifa University
of Science and Technology, Abu Dhabi127788, United Arab Emirates
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18
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Mondal R, Dusthackeer V. N. A, Kannan P, Singh AK, Thiruvengadam K, Manikkam R, A. S. S, Balasubramanian M, Elango P, Ebenezer Rajadas S, Bharadwaj D, Arumugam GS, Ganesan S, Kumar A. K. H, Singh M, Patil S, U. C. A. J, Doble M, R. B, Tripathy SP, Kumar V. In-vivo studies on Transitmycin, a potent Mycobacterium tuberculosis inhibitor. PLoS One 2023; 18:e0282454. [PMID: 36867599 PMCID: PMC9983862 DOI: 10.1371/journal.pone.0282454] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 02/14/2023] [Indexed: 03/04/2023] Open
Abstract
This study involves the in-vitro and in-vivo anti-TB potency and in-vivo safety of Transitmycin (TR) (PubChem CID:90659753)- identified to be a novel secondary metabolite derived from Streptomyces sp (R2). TR was tested in-vitro against drug resistant TB clinical isolates (n = 49). 94% of DR-TB strains (n = 49) were inhibited by TR at 10μg ml-1. In-vivo safety and efficacy studies showed that 0.005mg kg-1 of TR is toxic to mice, rats and guinea pigs, while 0.001mg kg-1 is safe, infection load did not reduce. TR is a potent DNA intercalator and also targets RecA and methionine aminopeptidases of Mycobacterium. Analogue 47 of TR was designed using in-silico based molecule detoxification approaches and SAR analysis. The multiple targeting nature of the TR brightens the chances of the analogues of TR to be a potent TB therapeutic molecule even though the parental compound is toxic. Analog 47 of TR is proposed to have non-DNA intercalating property and lesser in-vivo toxicity with high functional potency. This study attempts to develop a novel anti-TB molecule from microbial sources. Though the parental compound is toxic, its analogs are designed to be safe through in-silico approaches. However, further laboratory validations on this claim need to be carried out before labelling it as a promising anti-TB molecule.
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Affiliation(s)
- Rajesh Mondal
- ICMR - Bhopal Memorial Hospital & Research Center, Bhopal, Madhya Pradesh
| | | | | | - Amit Kumar Singh
- ICMR-National JALMA Institute for Leprosy & Other Mycobacterial Diseases, Agra, Uttar Pradesh
| | | | | | - Shainaba A. S.
- ICMR-National Institute for Research in Tuberculosis, Chennai, India
| | | | - Padmasini Elango
- ICMR-National Institute for Research in Tuberculosis, Chennai, India
| | | | | | | | | | | | | | - Shripad Patil
- ICMR-National JALMA Institute for Leprosy & Other Mycobacterial Diseases, Agra, Uttar Pradesh
| | - Jaleel U. C. A.
- OSPF NIAS Drug Discovery Lab, National Institute of Advanced Studies, Indian Institute of Science Campus, Bangalore, India
| | - Mukesh Doble
- Saveetha Dental College and Hospitals, Chennai, India
| | | | | | - Vanaja Kumar
- Ex-ICMR-NIRT, Chennai Scientists, Chennai, India
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19
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Arumugam GS, Sen A, Dash SS, Mitra K, Doble M, Rajaraman G, Gummadi SN. Arjunetin as a promising drug candidate against SARS-CoV-2: molecular dynamics simulation studies. J Biomol Struct Dyn 2022; 40:12358-12379. [PMID: 34533107 PMCID: PMC8459932 DOI: 10.1080/07391102.2021.1970627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Stem and bark of the tree Terminalia arjuna Wight & Arn. (Combretaceae) has been documented to exhibit therapeutic properties like cardiotonic, anticancer, antiviral, antibacterial, antifungal, hypercholesterolemia, hypolipidemic, and anti-coagulant. Our previous studies have shown that, ethanolic extract of T. arjuna bark exhibits radical scavenging anti-oxidant activity and also effectively inhibited catalase activity. In this study, oleanane triterpenoids type compounds viz., oleanolic acid, arjunolic acid, arjunolitin, arjunetin were isolated from ethanolic bark extract as bio-active compound and their structures were elucidated using 1H, 13C NMR, HR-ESIMS, IR. Of the various compounds, Arjunetin showed significant inhibition of catalase activity as compared to the other compounds. Based on the structural similarity between arjunetin and current antiviral drugs, we propose that arjunetin might exhibit antiviral activity. Molecular docking and molecular dynamics studies showed that arjunetin binds to the binds to key targets of SARS-CoV-2 namely, 3CLpro, PLpro, and RdRp) with a higher binding energy values (3CLpro, -8.4 kcal/mol; PLpro, -7.6 kcal/mol and RdRp, -8.1 kcal/mol) as compared with FDA approved protease inhibitor drugs to Lopinavir (3CLpro, -7.2 kcal/mole and PLpro -7.7 kcal/mole) and Remdesivir (RdRp -7.6 kcal/mole). To further investigate this, we performed 200-500 ns molecular dynamics simulation studies. The results transpired that the binding affinity of Arjunetin is higher than Remdesivir in the RNA binding cavity of RdRp. Based on structural similarity between arjunetin and Saikosaponin (a known antiviral agents) and based on our molecular docking and molecular dynamic simulation studies, we propose that arjunetin can be a promising drug candidate against Covid-19.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Gandarvakottai Senthilkumar Arumugam
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Applied and Industrial Microbiology Laboratory, Indian Institute of Technology Madras, Chennai, India
| | - Asmita Sen
- Department of Chemistry, Molecular Modelling Group (MMG), Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Swati S. Dash
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Applied and Industrial Microbiology Laboratory, Indian Institute of Technology Madras, Chennai, India
| | - Kartik Mitra
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Drug Design Laboratory, Indian Institute of Technology Madras, Chennai, India
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Drug Design Laboratory, Indian Institute of Technology Madras, Chennai, India
| | - Gopalan Rajaraman
- Department of Chemistry, Molecular Modelling Group (MMG), Indian Institute of Technology Bombay, Powai, Mumbai, India,Rajaraman Gopalan Department of Chemistry, Molecular Modelling Group (MMG), Indian Institute of Technology Bombay, Powai, Mumbai400076, India
| | - Sathyanarayana N. Gummadi
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Applied and Industrial Microbiology Laboratory, Indian Institute of Technology Madras, Chennai, India,CONTACT Sathyanarayana N. Gummadi Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Applied and Industrial Microbiology Laboratory, Indian Institute of Technology Madras, Chennai, 600 036, India;
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20
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Arumugam GS, Damodharan K, Doble M, Thennarasu S. Significant perspectives on various viral infections targeted antiviral drugs and vaccines including COVID-19 pandemicity. Mol Biomed 2022; 3:21. [PMID: 35838929 PMCID: PMC9283561 DOI: 10.1186/s43556-022-00078-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 05/05/2022] [Indexed: 11/10/2022] Open
Abstract
A virus enters a living organism and recruits host metabolism to reproduce its own genome and proteins. The viral infections are intricate and cannot be completely removed through existing antiviral drugs. For example, the herpes, influenza, hepatitis and human immunodeficiency viruses are a few dreadful ones amongst them. Significant studies are needed to understand the viral entry and their growth in host cells to design effective antivirals. This review emphasizes the range of therapeutical antiviral drugs, inhibitors along with vaccines to fight against viral pathogens, especially for combating COVID-19. Moreover, we have provided the basic and in depth information about viral targets, drugs availability, their mechanisms of action, method of prevention of viral diseases and highlighted the significances of anticoagulants, convalescent plasma for COVID-19 treatment, scientific details of airborne transmission, characteristics of antiviral drug delivery using nanoparticles/carriers, nanoemulsions, nanogels, metal based nanoparticles, alike the future nanosystems through nanobubbles, nanofibers, nanodiamonds, nanotraps, nanorobots and eventually, the therapeutic applications of micro- and nanoparticulates, current status for clinical development against COVID-19 together with environmental implications of antivirals, gene therapy etc., which may be useful for repurposing and designing of novel antiviral drugs against various dreadful diseases, especially the SARS-CoV-2 and other associated variants.
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21
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Manjunathan R, Periyaswami V, Mitra K, Rosita AS, Pandya M, Selvaraj J, Ravi L, Devarajan N, Doble M. Molecular docking analysis reveals the functional inhibitory effect of Genistein and Quercetin on TMPRSS2: SARS-COV-2 cell entry facilitator spike protein. BMC Bioinformatics 2022; 23:180. [PMID: 35578172 PMCID: PMC9108711 DOI: 10.1186/s12859-022-04724-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 05/05/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The Transmembrane Serine Protease 2 (TMPRSS2) of human cell plays a significant role in proteolytic cleavage of SARS-Cov-2 coronavirus spike protein and subsequent priming to the receptor ACE2. Approaching TMPRSS2 as a therapeutic target for the inhibition of SARS-Cov-2 infection is highly promising. Hence, in the present study, we docked the binding efficacy of ten naturally available phyto compounds with known anti-viral potential with TMPRSS2. The aim is to identify the best phyto compound with a high functional affinity towards the active site of the TMPRSS2 with the aid of two different docking software. Molecular Dynamic Simulations were performed to analyse the conformational space of the binding pocket of the target protein with selected molecules. RESULTS Docking analysis using PyRx version 0.8 along with AutoDockVina reveals that among the screened phyto compounds, Genistein shows the maximum binding affinity towards the hydrophobic substrate-binding site of TMPRSS2 with three hydrogen bonds interaction ( - 7.5 kcal/mol). On the other hand, molecular docking analysis using Schrodinger identified Quercetin as the most potent phyto compound with a maximum binding affinity towards the hydrophilic catalytic site of TMPRSS2 ( - 7.847 kcal/mol) with three hydrogen bonds interaction. The molecular dynamics simulation reveals that the Quercetin-TMPRSS complex is stable until 50 ns and forms stable interaction with the protein ( - 22.37 kcal/mol of MM-PBSA binding free energy). Genistein creates a weak interaction with the loop residues and hence has an unstable binding and exits from the binding pocket. CONCLUSION The compounds, Quercetin and Genistein, can inhibit the TMPRSS2 guided priming of the spike protein. The compounds could reduce the interaction of the host cell with the type I transmembrane glycoprotein to prevent the entry of the virus. The critical finding is that compared to Genistein, Quercetin exhibits higher binding affinity with the catalytic unit of TMPRSS2 and forms a stable complex with the target. Thus, enhancing our innate immunity by consuming foods rich in Quercetin and Genistein or developing a novel drug in the combination of Quercetin and Genistein could be the brilliant choices to prevent SARS-Cov-2 infection when we consider the present chaos associated with vaccines and anti-viral medicines.
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Affiliation(s)
- Reji Manjunathan
- Department of Genetics, Dr. ALM Post Graduate Institute of Basic Medical Sciences, Taramani Campus, University of Madras, Chennai, Tamil Nadu, India. .,Multi-Disciplinary Research Unit, Chengalpattu Government Medical College and Hospital, Chengalpattu, Tamil Nadu, 603001, India.
| | - Vijayalakshmi Periyaswami
- Department of Biotechnology and Bioinformatics, Holy Cross College, Bharathidasan University, Trichy, Tamil Nadu, India
| | - Kartik Mitra
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Arokiaraj Sherlin Rosita
- Department of Bioinformatics, Bishop Heber College (Autonomous, Bharathidasan University), Tiruchirapalli, Tamil Nadu, India
| | - Medha Pandya
- KPES Science College, Maharaja KrishnakumarSinhiji Bhavnagar University, Gujarat, India
| | - Jayaraman Selvaraj
- Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - Lokesh Ravi
- Department of Botany, St. Josephs College, Bangalore, Karnataka, India
| | - Nalini Devarajan
- Central Research Laboratory, Meenakshi Ammal Dental College, Maduravoyal, Chennai, Tamil Nadu, India.
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India. .,Department of Cariology, Saveetha Dental College and Hospital, Chennai, Tamil Nadu, 600077, India.
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22
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Latiyan S, Kumar TSS, Doble M. Fabrication and evaluation of multifunctional agarose based electrospun scaffolds for cutaneous wound repairs. J Tissue Eng Regen Med 2022; 16:653-664. [PMID: 35460335 DOI: 10.1002/term.3308] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 04/05/2022] [Accepted: 04/11/2022] [Indexed: 12/31/2022]
Abstract
Despite several advances in chronic wound management, natural product based scaffolds with high exude absorption and mechanical strength are still a hotspot in the medical field. Thus, present study illustrates the fabrication of agarose (AG; 10% w/v)/polyvinyl alcohol 12% w/v) based multifunctional nanofibrous electrospun scaffolds. Zinc citrate (1%, 3% and 5% w/w of the polymer) was used as a potential antibacterial agent. The fabricated scaffolds exhibit a swelling of ∼550% in phosphate buffer saline and mechanical strength of 10.11 ± 0.31 MPa which is suitable for most of the wound healing applications that require high strength. In vitro study revealed an increased migration and proliferation of L929 fibroblasts with AG blends when compared to the control. The fabricated scaffolds exhibited antibacterial properties against both Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative) bacterial strains. Hence, a multifunctional (ability to protect wounds from bacterial infections along with effective swelling and mechanical support), natural product based, eco-friendly scaffold to serve as a potential wound dressing material has been successfully fabricated.
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Affiliation(s)
- Sachin Latiyan
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India.,Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India.,Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
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23
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Annam N, Karlapudi AP, Doble M, Srirama K, T.C. V. An in silico study on pulmonary fibrosis inhibitors from Tinospora cordifolia and Curcuma longa targeting TGF-β RI. J Biomol Struct Dyn 2022; 41:3145-3161. [PMID: 35068362 DOI: 10.1080/07391102.2022.2029772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Pulmonary fibrosis is characterized by damage to the epithelial cells and alveolar-capillary basement membrane. The increased expression levels of transforming growth factor β (TGF-β) and TGF-β-receptor-1 induced differentiation of lung fibroblasts to myofibroblasts, an alarming sign and considered the hallmark event development of pulmonary fibrosis. In the current study, the stability of phytochemicals of Curcuma longa and Tinospora cordifolia as inhibitors of transforming growth factor β RI (TGF-β RI) were evaluated using molecular docking and molecular dynamics studies. A total of 108 Curcuma longa and 16 Tinospora cordifolia constituents were screened against TGF-β RI as the target. Further, their ADMET properties were evaluated using the pkCSM online server. The compounds tembetarine, magnoflorine from T. cordiolia, and 2-(Hydroxymethyl) anthraquinone and quercetin in C. longa showed significant binding affinities bonding interactions with the target, TGF-β RI, and the study was compared with the known inhibitors from the literature. The MD simulations study also supported that the selected compounds show a close affinity with the binding site and maintained stable behavior throughout the simulation time. The pharmacophore feature analysis of the selected compounds and inhibitors were analyzed using the pharmagist web server, and the common features like H-bond donor and aromatic ring were mapped.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Nagalakshmi Annam
- Department of Biotechnology, Vignan’s Foundation for Science, Technology & Research, Vadlamudi, Andhra Pradesh, India
| | - Abraham Peele Karlapudi
- Department of Biotechnology, Vignan’s Foundation for Science, Technology & Research, Vadlamudi, Andhra Pradesh, India
| | - Mukesh Doble
- Bio Engineering and Drug Design Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Krupanidhi Srirama
- Department of Biotechnology, Vignan’s Foundation for Science, Technology & Research, Vadlamudi, Andhra Pradesh, India
| | - Venkateswarulu T.C.
- Department of Biotechnology, Vignan’s Foundation for Science, Technology & Research, Vadlamudi, Andhra Pradesh, India
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24
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Mitra K, Chadha A, Muthuvijayan V, Doble M. Self-Assembled Inhalable Immunomodulatory Silk Fibroin Nanocarriers for Enhanced Drug Loading and Intracellular Antibacterial Activity. ACS Biomater Sci Eng 2022; 8:708-721. [DOI: 10.1021/acsbiomaterials.1c01357] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kartik Mitra
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
- Laboratory of Bioorganic Chemistry, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences& National Center for Catalysis Research (NCCR), Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
- Tissue Engineering and Biomaterials Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
| | - Anju Chadha
- Laboratory of Bioorganic Chemistry, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences& National Center for Catalysis Research (NCCR), Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Vignesh Muthuvijayan
- Tissue Engineering and Biomaterials Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
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25
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Devi RV, Raj D, Doble M. Lockdown of mitochondrial Ca 2+ extrusion and subsequent resveratrol treatment kill HeLa cells by Ca 2+ overload. Int J Biochem Cell Biol 2021; 139:106071. [PMID: 34428589 DOI: 10.1016/j.biocel.2021.106071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/06/2021] [Accepted: 08/19/2021] [Indexed: 10/20/2022]
Abstract
Anticancer effect of resveratrol and the role of sodium/lithium/calcium exchanger in context with calcium ions are studied in human cervical cancer cell line. This therapeutic approach using siNCLX mediated gene silencing and drug therapy with resveratrol indicates the disruption of calcium homeostasis, increase in caspase (-3, 8, 9) mRNA expressions and DNA damage leading to apoptotic cell death. Monitoring the intracellular Ca2+ changes using fluo-4AM indicates highest rise in [Ca2+] level in sodium/lithium/calcium exchanger silenced group with five different stages, that is distinguishable based on the fluorescence intensity. In resveratrol treated and siNCLX + resveratrol treated groups no such cell staging differences were observed, despite uniform Ca2+ rise followed by decrease in the intensity. Integrating RNAi gene silencing of sodium/lithium/calcium exchanger with resveratrol can form the most interesting, efficient and promising therapeutic strategy in the treatment of cancer.
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Affiliation(s)
- R Viswambari Devi
- Bioengineering and Drug Design Laboratory, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India
| | - Divakar Raj
- Bioengineering and Drug Design Laboratory, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India
| | - Mukesh Doble
- Bioengineering and Drug Design Laboratory, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India.
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26
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Damodharan K, Arumugam GS, Ganesan S, Doble M, Thennarasu S. A comprehensive overview of vaccines developed for pandemic viral pathogens over the past two decades including those in clinical trials for the current novel SARS-CoV-2. RSC Adv 2021; 11:20006-20035. [PMID: 35479882 PMCID: PMC9033969 DOI: 10.1039/d0ra09668g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/14/2021] [Indexed: 12/12/2022] Open
Abstract
The unprecedented coronavirus disease 2019 (COVID-19) is triggered by a novel strain of coronavirus namely, Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2). Researchers are working around the clock to control this pandemic and consequent waves of viral reproduction, through repurposing existing drugs as well as designing new vaccines. Several countries have hastened vaccine design and clinical trials to quickly address this outbreak. Currently, more than 250 aspirants against SARS-CoV-2 are in progress, including mRNA-replicating or non-replicating viral vectored-, DNA-, autologous dendritic cell-based-, and inactivated virus-vaccines. Vaccines work by prompting effector mechanisms such as cells/molecules, which target quickly replicating pathogens and neutralize their toxic constituents. Vaccine-stimulated immune effectors include adjuvant, affinity, avidity, affinity maturation, antibodies, antigen-presenting cells, B lymphocytes, carrier protein, CD4+ T-helper cells. In this review, we describe updated information on the various vaccines available over the last two decades, along with recent progress in the ongoing battle developing 63 diverse vaccines against SARS-CoV-2. The inspiration of our effort is to convey the current investigation focus on registered clinical trials (as of January 08, 2021) that satisfy the safety and efficacy criteria of international wide vaccine development.
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Affiliation(s)
- Kannan Damodharan
- Department of Organic and Bioorganic Chemistry, CSIR-Central Leather Research Institute (CLRI) Chennai 600020 India
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras (IITM) Chennai 600032 India
| | | | - Suresh Ganesan
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras (IITM) Chennai 600032 India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras (IITM) Chennai 600032 India
| | - Sathiah Thennarasu
- Department of Organic and Bioorganic Chemistry, CSIR-Central Leather Research Institute (CLRI) Chennai 600020 India
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Abstract
Eicosanoid pathways play a crucial role in the progression and resolution of inflammation. NSAIDs act as anti-inflammatory agents by inhibiting both the isoforms of cyclooxygenases (COXs) whereas, COXIBs act as specific COX-2 inhibitors. Excessive usage of the same is linked with gastrointestinal bleeding and increased cardiovascular risk, respectively. The current in-silico study was aimed at evaluating the potential of major alkaloids of A. vasica (vasicine (VAS), vasicinone (VAE), and Deoxyvasicine (DOV)) as inhibitors of COXs. The results of the computed binding energy (ΔG) indicate that Celecoxib (CEL), DOV, and VAS have a higher affinity to COX-2, while VAE has a higher affinity to COX-1, and Mefenamic acid (MEF) was not selective. Among the alkaloids, VAE exhibited the best ΔG (of -8.2 kcal/mol) with COX-1, while VAS exhibited the best ΔG (of -8.2 kcal/mol) with COX-2. This was comparable to the ΔG exhibited by Mefenamic acid (-8.7 kcal/mol with both the COXs). With their potential to remain gastroprotective while having the ability to inhibit enzymes of both the prostaglandin and leukotriene pathways, the alkaloids of A. vasica could be promising leads for the design of Eicosanoid pathway modulators/inhibitors.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Prasanth Ghanta
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, India
| | - Mukesh Doble
- Bio-engineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology - Madras, Chennai, India
| | - Basavaraju Ramaiah
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, India
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Venkateswaran M, Jayabal S, Hemaiswarya S, Murugesan S, Enkateswara S, Doble M, Periyasamy S. Polyphenol-rich Indian ginger cultivars ameliorate GLUT4 activity in C2C12 cells, inhibit diabetes-related enzymes and LPS-induced inflammation: An in vitro study. J Food Biochem 2021; 45:e13600. [PMID: 33403698 DOI: 10.1111/jfbc.13600] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/11/2020] [Accepted: 12/12/2020] [Indexed: 12/14/2022]
Abstract
Diabetes is a chronic metabolic disorder that results in distorted insulin signaling and microvascular complications. Current antidiabetic drugs possess harmful long term side effects, necessitating the need for alternate or compliment therapy with lesser issues. Medicinal plants such as ginger have been reported to possess several beneficial activities including antidiabetic activity. The antidiabetic efficacy of microwave-assisted polyphenolic extracts of Indian ginger cultivars from Odisha (MPO) and Tamil Nadu (MPT) is reported here. MPT and MPO showed insulin stimulated glucose uptake of 1.74 ± 0.25 and 1.47 ± 0.15 fold at 6.25 µg/ml of concentrations in C2C12 cells respectively when compared to control. MPT possessed α-amylase, α-glucosidase inhibitory and anti-glycation properties. It also showed DPPH radical scavenging activity (7.69 ± 0.001%), inhibited LPS-induced nitric oxide production (1.06 ± 0.004 fold) than the latter and increased the GLUT4 protein expression by 1.4 fold. Major active compounds such as shogaol and gingerol derivatives, curcumene, zingiberone were identified through GC-ESI/MS analysis and D-pinitol (cyclitol) was identified through HPLC analysis in this variety. This is the first paper to report the presence of an antidiabetic compound, D-pinitol, in the ginger variety. Polyphenol rich, biologically potent ginger extracts can be a good food and nutraceutical supplement to address diabetes and related complications. PRACTICAL APPLICATIONS: Ginger is a native spice of South Asian Countries including India. Ginger extracts possess several medicinal properties such as anti-inflammatory, antidiabetic and antioxidant activities. It is used to treat nausea, vomiting and commonly used as a food flavouring agent and dietary food supplement. Our study shows the antidiabetic, anti-glycation and antioxidant efficacy of polyphenol rich Indian ginger cultivars grown in different geographical regions. Variations in the biological activities between the MPT and MPO ginger variety was observed. Different environmental conditions and their corresponding metabolite accumulation can be correlated with the better activity shown by MPT variety. It showed an increased GLUT4 expression even at a lower dose of 6.25 µg/ml. Ginger cultivar, especially MPT variety can be used as an adjuvant therapy for treating diabetes. Therefore, our study indicates that polyphenols rich ginger cultivar has major application in functional food product development.
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Affiliation(s)
| | - Sasidharan Jayabal
- Department of Biotechnology, Anna University, BIT-Campus, Tiruchirappalli, India
| | - Shanmugam Hemaiswarya
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | - Selvakumar Murugesan
- Department of Biotechnology, Anna University, BIT-Campus, Tiruchirappalli, India
| | - Subudhi Enkateswara
- Center for Biotechnology, Siksha O Anusandhan University, Bhubaneswar, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
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29
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Ravindran R, Mitra K, Arumugam SK, Doble M. Preparation of Curdlan sulphate - Chitosan nanoparticles as a drug carrier to target Mycobacterium smegmatis infected macrophages. Carbohydr Polym 2021; 258:117686. [PMID: 33593559 DOI: 10.1016/j.carbpol.2021.117686] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 01/15/2021] [Accepted: 01/15/2021] [Indexed: 12/21/2022]
Abstract
In this study, curdlan sulphate - chitosan nanoparticles were prepared through polyelectrolyte complexing at a mass ratio of 2:1 respectively. The curdlan was produced by fermentation with Agrobacterium sp. ATCC 31750, which was then sulphated to form the polyanionic polymer. A first-line tuberculosis drug, Rifampicin and a phytochemical, DdPinitol, were encapsulated into Curdlan Sulphate (CS) - Chitosan Nanoparticles (C) (CSC NPs) of size 205.41 ± 7.24 nm. The drug release kinetics followed a Weibull model with initial burst release (48 % Rifampicin and 27 % d-Pinitol within 6 h), followed by a sustained release. The prepared CSC: d-PIN + RIF NPs was cytocompatible and entered the M.smegmatis infected macrophages through multiple endocytic pathways including clathrin, caveolae and macropinocytosis. They showed superior bactericidal activity (2.4-2.7 fold) within 4 h when compared to free drug Rifampicin (1.6 fold). The drug encapsulated CSC: RIF suppressed the pro-inflammatory gene (TNF-α by 3.66 ± 0.19 fold) and CSC: d-PIN + RIF increased expression of the anti-inflammatory gene (IL-10 by 13.09 ± 0.47 fold). Expression of TGF- β1 gene also increased when treated with CSC: d-PIN + RIF (13.00 ± 0.19 fold) which provided the immunomodulatory activity of the encapsulated CSC NPs. Thus, curdlan sulphate - chitosan polyelectrolyte complex can be a potential nanocarrier matrix for intracellular delivery of multiple drugs.
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Affiliation(s)
- Radhika Ravindran
- Bioengineering and Drug Design Lab, Dept. of Biotechnology, Indian Institute of Technology, Madras, India
| | - Kartik Mitra
- Bioengineering and Drug Design Lab, Dept. of Biotechnology, Indian Institute of Technology, Madras, India
| | - Senthil Kumar Arumugam
- Bioengineering and Drug Design Lab, Dept. of Biotechnology, Indian Institute of Technology, Madras, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Dept. of Biotechnology, Indian Institute of Technology, Madras, India.
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30
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Ganesan S, Sarangapani M, Doble M. An expedient, one-pot, stepwise sequential approach for the regioselective synthesis of pyrazolines. Journal of Chemical Research 2020. [DOI: 10.1177/1747519820977165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient approach for the synthesis of pyrazoline/pyrazole-tethered pyridinyl methanones is described via a one-pot, stepwise, sequential methodology using chalcones and pyridine-4-carbohydrazide as substrates through a Michael addition followed by cyclization. The reaction proceeds via a catalyst-, solvent-, work-up-, and column-chromatography-free method under melt conditions to provide the pyrazolines in short reaction times with high atom efficiency.
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Affiliation(s)
- Suresh Ganesan
- Department of Chemistry, Ramakrishna Mission Vivekananda College, Chennai, India
| | - Muniraj Sarangapani
- Department of Chemistry, Ramakrishna Mission Vivekananda College, Chennai, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
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31
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Ghanta P, Sinha S, Doble M, Ramaiah B. Potential of pyrroquinazoline alkaloids from Adhatoda vasica Nees. as inhibitors of 5-LOX – a computational and an in-vitro study. J Biomol Struct Dyn 2020; 40:2785-2796. [DOI: 10.1080/07391102.2020.1848635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Prasanth Ghanta
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, India
| | - Shweta Sinha
- Department of Biotechnology, Bio-Engineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology - Madras, Adayar, Chennai, India
| | - Mukesh Doble
- Department of Biotechnology, Bio-Engineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology - Madras, Adayar, Chennai, India
| | - Basavaraju Ramaiah
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, India
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32
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Yadav SK, Ir R, Jeewon R, Doble M, Hyde KD, Kaliappan I, Jeyaraman R, Reddi RN, Krishnan J, Li M, Durairajan SSK. A Mechanistic Review on Medicinal Mushrooms-Derived Bioactive Compounds: Potential Mycotherapy Candidates for Alleviating Neurological Disorders. Planta Med 2020; 86:1161-1175. [PMID: 32663897 DOI: 10.1055/a-1177-4834] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
According to the World Health Organization, neurological and neurodegenerative diseases are highly debilitating and pose the greatest threats to public health. Diseases of the nervous system are caused by a particular pathological process that negatively affects the central and peripheral nervous systems. These diseases also lead to the loss of neuronal cell function, which causes alterations in the nervous system structure, resulting in the degeneration or death of nerve cells throughout the body. This causes problems with movement (ataxia) and mental dysfunction (dementia), both of which are commonly observed symptoms in Alzheimer's disease, Parkinson's disease, Huntington's disease, and multiple sclerosis. Medicinal mushrooms are higher fungi with nutraceutical properties and are low in calories and fat. They are also a rich source of nutrients and bioactive compounds such as carbohydrates, proteins, fibers, and vitamins that have been used in the treatment of many ailments. Medicinal mushrooms such as Pleurotus giganteus, Ganoderma lucidium, and Hericium erinaceus are commonly produced worldwide for use as health supplements and medicine. Medicinal mushrooms and their extracts have a large number of bioactive compounds, such as polysaccharide β-glucan, or polysaccharide-protein complexes, like lectins, lactones, terpenoids, alkaloids, antibiotics, and metal-chelating agents. This review will focus on the role of the medicinal properties of different medicinal mushrooms that contain bioactive compounds with a protective effect against neuronal dysfunction. This information will facilitate the development of drugs against neurodegenerative diseases.
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Affiliation(s)
- Sonu Kumar Yadav
- Division of Mycobiology and Neurodegenerative Disease Research, Department of Microbiology, School of Life Sciences, Central University of Tamil Nadu, Tiruvarur, India
| | - Reshma Ir
- Division of Mycobiology and Neurodegenerative Disease Research, Department of Microbiology, School of Life Sciences, Central University of Tamil Nadu, Tiruvarur, India
| | - Rajesh Jeewon
- Department of Health Sciences, Faculty of Science, University of Mauritius, Reduit, Mauritius
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | - Kevin D Hyde
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand
| | - Ilango Kaliappan
- Interdisciplinary Institute of Indian System of Medicine, SRM Institute of Science and Technology, Kattankulathur, India
| | - Ravindrian Jeyaraman
- Corrosion and Materials Protection Division, CSIR-Central Electrochemical Research Institute, Karaikudi, India
| | - Rambabu N Reddi
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Jayalakshmi Krishnan
- Department of Life Sciences, School of Life Sciences, Central University of Tamil Nadu, Tiruvarur, India
| | - Min Li
- Mr. & Mrs. Ko Chi-Ming Centre for Parkinson's Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, China
| | - Siva Sundara Kumar Durairajan
- Division of Mycobiology and Neurodegenerative Disease Research, Department of Microbiology, School of Life Sciences, Central University of Tamil Nadu, Tiruvarur, India
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Subramani M, Ramamoorthy G, Hemaiswarya S, Waidha K, Brindha J, Balamurali MM, Doble M, Rajendran S. Hydroxy Piperlongumines: Synthesis, Antioxidant, Cytotoxic Effect on Human Cancer Cell Lines, Inhibitory Action and ADMET Studies. ChemistrySelect 2020. [DOI: 10.1002/slct.202002453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Muthuraman Subramani
- Chemistry division School of Advanced Sciences Vellore Institute of Technology Chennai 600127 Tamilnadu India
| | - Gayathri Ramamoorthy
- Department of Biotechnology Indian Institute of Technology Madras Tamilnadu 600036 India
| | - Shanmugam Hemaiswarya
- Department of Biotechnology Indian Institute of Technology Madras Tamilnadu 600036 India
| | - Kamran Waidha
- Amity Institute of Biotechnology Amity University Uttar Pradesh, Sector-125 Noida 201303 India
| | - J. Brindha
- Chemistry division School of Advanced Sciences Vellore Institute of Technology Chennai 600127 Tamilnadu India
| | - M. M. Balamurali
- Chemistry division School of Advanced Sciences Vellore Institute of Technology Chennai 600127 Tamilnadu India
| | - Mukesh Doble
- Department of Biotechnology Indian Institute of Technology Madras Tamilnadu 600036 India
| | - Saravanakumar Rajendran
- Chemistry division School of Advanced Sciences Vellore Institute of Technology Chennai 600127 Tamilnadu India
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34
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Sellappan LK, Anandhavelu S, Doble M, Perumal G, Jeon JH, Vikraman D, Kim HS. Biopolymer film fabrication for skin mimetic tissue regenerative wound dressing applications. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1817019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Logesh Kumar Sellappan
- Department of Biomedical Engineering, Dr. N. G. P. Institute of Technology, Coimbatore, Tamil Nadu, India
| | - Sanmugam Anandhavelu
- Department of Chemistry, Vel Tech Multi Tech Engineering College, Chennai, Tamil Nadu, India
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Govindaraj Perumal
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Ji-Hoon Jeon
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul, Republic of Korea
| | - Dhanasekaran Vikraman
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul, Republic of Korea
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul, Republic of Korea
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35
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Affiliation(s)
- Geetha Venkatachalam
- Bioengineering and Drug Design Lab, Department of Biotechnology, IIT Madras, Chennai, India
| | - Senthilkumar Arumugam
- Bioengineering and Drug Design Lab, Department of Biotechnology, IIT Madras, Chennai, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, IIT Madras, Chennai, India
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Ramu SM, Thulasinathan B, Gujuluva Hari D, Bora A, Jayabalan T, Mohammed SN, Doble M, Arivalagan P, Alagarsamy A. Fermentative hydrogen production and bioelectricity generation from food based industrial waste: An integrative approach. Bioresour Technol 2020; 310:123447. [PMID: 32353772 DOI: 10.1016/j.biortech.2020.123447] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
In the present study, isolation and identification of hydrogen producing strains from sugar and food industry wastewater were reported. From 48 isolates in both the wastewater, initial batch studies led to the use of four effective strains, which were identified using 16S rRNA gene sequencing as Bacillus thuringiensis-FH1, Comamonas testosteroni-FB1, Klebsiella pneumoniae-FA2 and Bacillus cereus-SB2, respectively. Further optimization studies were done at various pH values (5-8) and wastewater concentrations (10-100%). In the optimized batch experimentation, K. pneumoniae-FA2 excelled with the maximum cumulative hydrogen production of 880.93 ± 44.0 mL/L. A 3 L bioreactor was employed for effective hydrogen production, which conferred that K. pneumoniae-FA2, surpassed the other three with the maximum hydrogen yield of 3.79 ± 0.04 mol H2/mol glucose. Bioelectricity production by K. pneumoniae-FA2 was also investigated in the microbial fuel cell at the optimized conditions to demonstrate its versatility in energy applications.
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Affiliation(s)
- Satheesh Murugan Ramu
- Department of Energy Science, Alagappa University, Karaikudi 630 003, Tamil Nadu, India; Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Boobalan Thulasinathan
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Dinesh Gujuluva Hari
- Department of Energy Science, Alagappa University, Karaikudi 630 003, Tamil Nadu, India; Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Abhispa Bora
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Tamilmani Jayabalan
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620 015 Tamil Nadu, India
| | - Samsudeen Naina Mohammed
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620 015 Tamil Nadu, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | - Pugazhendhi Arivalagan
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam
| | - Arun Alagarsamy
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India.
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Mitra K, Ghanta P, Acharya S, Chakrapani G, Ramaiah B, Doble M. Dual inhibitors of SARS-CoV-2 proteases: pharmacophore and molecular dynamics based drug repositioning and phytochemical leads. J Biomol Struct Dyn 2020; 39:6324-6337. [PMID: 32698693 PMCID: PMC7441782 DOI: 10.1080/07391102.2020.1796802] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
SARS-related coronaviruses poses continual threat to humanity by rapidly mutating and emerging as severe pandemic outbreaks, including the current nCoV-19 pandemic. Hence a rapid drug repositioning and lead identification strategy are required to mitigate these outbreaks. We report a pharmacophore and molecular dynamics-based approach for drug repositioning and lead identification against dual targets (3CLp and PLp) of SARS-CoV-2. The pharmacophore model of 3CLp inhibitors was apolar with two aromatic and two H-bond acceptors, whereas that of PLp was relatively polar, bearing one aromatic and three H-bond acceptors. Pharmacophore-based virtual screening yielded six existing FDA-approved drugs and twelve natural products with both the pharmacophoric features. Among them are nelfinavir, tipranavir and licochalcone-D, which has shown better binding characteristics with both the proteases compared to lopinavir. The molecular dynamics revealed that the connecting loop (residues 176–199) of 3CLp is highly flexible, and hence, inhibitors should avoid high-affinity interactions with it. Lopinavir, due to its high affinity with the loop region, exhibited unstable binding. Further, the van der Waals size of the 3CLp inhibitors positively correlated with their binding affinity with 3CLp. However, the van der Waals size of a ligand should not cross a threshold of 572Å3, beyond which the ligands are likely to make high-affinity interaction with the loop and suffer unstable binding as observed in the case of lopinavir. Similarly, the total polar surface area of the ligands were found to be negatively correlated with their binding affinity with PLp.
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Affiliation(s)
- Kartik Mitra
- Department of Biotechnology, Bio-Engineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology-Madras, Adayar, Chennai, Tamil Nadu, India
| | - Prasanth Ghanta
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, Andhra Pradesh, India
| | - Sushank Acharya
- Department of Biotechnology, Bio-Engineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology-Madras, Adayar, Chennai, Tamil Nadu, India
| | - Gayathri Chakrapani
- Department of Biotechnology, Bio-Engineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology-Madras, Adayar, Chennai, Tamil Nadu, India
| | - Basavaraju Ramaiah
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, Andhra Pradesh, India
| | - Mukesh Doble
- Department of Biotechnology, Bio-Engineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology-Madras, Adayar, Chennai, Tamil Nadu, India
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38
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Venkatachalam G, Arumugam S, Doble M. Synthesis, Characterization, and Biological Activity of Aminated Zymosan. ACS Omega 2020; 5:15973-15982. [PMID: 32656418 PMCID: PMC7345428 DOI: 10.1021/acsomega.0c01243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/11/2020] [Indexed: 06/11/2023]
Abstract
Zymosan (ZM), a naturally occurring insoluble macromolecule obtained from the cell wall of Saccharomyces cerevisiae, is used as a functional food (as dietary fiber), phagocytic stimulus, and immune potentiator. The present study aimed to increase its solubility and evaluate its immunological application. ZM was converted into soluble 6-amino-6-deoxy-β-(1-3)-glucan of a molecular weight of 296 kDa by reduction. Detailed structural characterization of aminated ZM was determined by Fourier transform infrared spectroscopy and two-dimensional NMR analysis (2D, COSY, TOCSY, ROSEY, NOSEY, and HSQC). Aminated ZM was biocompatible with Raw 264.7 macrophage cell lines up to a concentration of 100 μg/mL. Rhodamine tagging revealed that the aminated ZM microparticles were found localized within the nucleus of Raw 264.7 cells. Both native and aminated ZM showed a similar expression pattern of inflammatory genes in Raw 264.7.
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39
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Perumal G, Ramasamy B, Nandkumar A M, Dhanasekaran S, Ramasamy S, Doble M. Bilayer nanostructure coated AZ31 magnesium alloy implants: in vivo reconstruction of critical-sized rabbit femoral segmental bone defect. Nanomedicine 2020; 29:102232. [PMID: 32562860 DOI: 10.1016/j.nano.2020.102232] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 05/26/2020] [Accepted: 05/26/2020] [Indexed: 12/15/2022]
Abstract
Healing or reconstruction of critical-sized bone defects is still challenging in orthopaedic practice. In this study, we developed a new approach to control the degradation and improve the bone regeneration of the AZ31 magnesium substrate, fabricated as mesh cage implants. Subsequently, bilayer nanocomposite coating was carried out using polycaprolactone (PCL) and nano-hydroxyapatite (nHA) by dip-coating and electrospinning. Lastly, the healing capacity of the implants was studied in New Zealand White (NZW) rabbit critical-sized femur bone defects. X-ray analysis showed the coated implant group bridged and healed the critical defects 100% during four weeks of post-implantation. Micro-computed tomography (Micro-CT) study showed higher total bone volume (21.10%), trabecular thickness (0.73), and total porosity (85.71%) with bilayer coated implants than uncoated. Our results showed that nanocomposite coated implants controlled the in vivo degradation and improved bioactivity. Hence, the coated implants can be used as a promising bioresorbable implant for critical segmental bone defect repair applications.
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Affiliation(s)
- Govindaraj Perumal
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | - Boopalan Ramasamy
- Department of Orthopaedics/Centre for Stem Cell Research, Christian Medical College, Vellore, India; Department of Orthopaedics, Royal Darwin Hospital, Tiwi, Australia
| | - Maya Nandkumar A
- Division of Microbial Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Sivaraman Dhanasekaran
- Centre for Laboratory Animal Technology and Research, Sathyabama Institute of Science and Technology, Chennai, India
| | | | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India.
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40
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Kar S, Ramamoorthy G, Mitra K, Shivalingegowda N, Mahesha, Mavileti SK, Neratur Krishnappagowda L, Doble M, Golakoti NR. Synthesis of novel spirobibenzopyrans as potent anticancer leads inducing apoptosis in HeLa cells. Bioorg Med Chem Lett 2020; 30:127199. [PMID: 32331934 DOI: 10.1016/j.bmcl.2020.127199] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/12/2020] [Accepted: 04/14/2020] [Indexed: 12/13/2022]
Abstract
Spirobibenzopyrans are an unexplored class of therapeutics. We report the anticancer activity of novel spirobibenzopyrans, synthesized by a one-pot reaction and extensively characterized. Structure of one of the spirobibenzopyran has been determined by the single crystal XRD technique. The in vitro anticancer activity of these derivatives across the NCI 60-cell line panel was evaluated and for the first time their mechanism of action against HeLa cells was probed via cell morphology analysis and cell cycle analysis. They were determined to be apoptosis inducers with cell cycle arrest in G0/G1 and S phase suggesting CDK-4 protein inhibition and the inhibition of DNA replication. The DNA inhibition was studied and confirmed using the alkaline comet assay for the compound CHX-4MO-SAL showing S phase inhibition. Further, conformity with the in silico Lipinski's score signify the potential of spirobibenzopyrans as anticancer leads.
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Affiliation(s)
- Swayamsiddha Kar
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Andhra Pradesh 515134, India
| | - Gayathri Ramamoorthy
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
| | - Kartik Mitra
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
| | - Naveen Shivalingegowda
- Department of Physics, Faculty of Engineering & Technology, Jain University, Bangalore 562 112, India
| | - Mahesha
- Department of Studies in Physics, Manasagangotri, University of Mysore, Mysuru 570 006, India
| | - Sai Kiran Mavileti
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Andhra Pradesh 515134, India
| | | | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India.
| | - Nageswara Rao Golakoti
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Andhra Pradesh 515134, India.
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41
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Madihalli C, Sudhakar H, Doble M. Production and investigation of the physico-chemical properties of MEL-A from glycerol and coconut water. World J Microbiol Biotechnol 2020; 36:88. [PMID: 32500290 DOI: 10.1007/s11274-020-02857-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 05/18/2020] [Indexed: 01/01/2023]
Abstract
This work reports the production of MEL-A using coconut water as the carbon source. Proximate analysis of coconut water indicated the presence of nutrients necessary for growth of the organism and production of desired metabolite. The amount of MEL produced using coconut water was 3.85 g/L (± 0.35) with 74% of it being MEL-A when compared to 2.58 g/L (± 0.15) with 60% being MEL-A using glycerol, a conventional carbon source. MEL-A from coconut water consisted of 38.1% long-chain saturated fatty acids (C16:0 and C18:0) whereas with glycerol it was 9.6%. The critical micellar concentration of the biosurfactant from coconut water was 2.32 ± 0.21 µM when compared to 4.41 ± 0.25 µM from glycerol. The stability of O/W emulsion was reduced by 50% and 90% after incubation for 8 h in the case of MEL-A from coconut water and glycerol respectively when compared to synthetic surfactant, Tween-20. MEL-A from both the sources exhibited free radical scavenging activity (DPPH assay) in a dose-dependent manner wherein MEL-A from coconut water showed two fold higher activity than the other. The interaction of coconut water MEL-A with DPPC for drug encapsulation applications was also studied. The DSC measurements showed the differences in the interaction of drugs with DPPC/MEL-A liposome. The differences were also observed in the solubility of drugs after encapsulation with DPPC/MEL-A liposome.
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Affiliation(s)
- Chandraprasad Madihalli
- Bioengineering and Drug Design Lab, Bhupat and Jyothi Mehta School of Bioscience, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India.,Department of Biotechnology, BMS College of Engineering, Bengaluru, 560019, India
| | - Harshal Sudhakar
- Bioengineering and Drug Design Lab, Bhupat and Jyothi Mehta School of Bioscience, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Bhupat and Jyothi Mehta School of Bioscience, Department of Biotechnology, Indian Institute of Technology, Chennai, 600036, India.
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42
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Perumal G, Sivakumar PM, Nandkumar AM, Doble M. Synthesis of magnesium phosphate nanoflakes and its PCL composite electrospun nanofiber scaffolds for bone tissue regeneration. Materials Science and Engineering: C 2020; 109:110527. [DOI: 10.1016/j.msec.2019.110527] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 11/03/2019] [Accepted: 12/05/2019] [Indexed: 01/13/2023]
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Yunus Basha R, Venkatachalam G, Sampath Kumar TS, Doble M. Dimethylaminoethyl modified curdlan nanoparticles for targeted siRNA delivery to macrophages. Mater Sci Eng C Mater Biol Appl 2019; 108:110379. [PMID: 31923932 DOI: 10.1016/j.msec.2019.110379] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 10/26/2019] [Accepted: 10/29/2019] [Indexed: 12/14/2022]
Abstract
Curdlan, an insoluble and neutral polysaccharide, was produced from Agrobacterium sp. ATCC 31750 and chemically modified with dimethylaminoethyl (DMAE) group to introduce gene binding ability. The resulting DMAE-curdlan was crosslinked with curdlan nanoparticles using epichlorohydrin. The prepared nanoparticles are spherical with an average diameter of 523 ± 195 nm, stable and are highly biocompatible with differentiated THP-1 macrophages with viability of above 90%. They are taken up more efficiently by RAW 264.7 macrophage cells than by L929 fibroblast cells. They increase the expression of M1 macrophage marker genes, TNFα and CXCL10, and decrease the expression of M2 marker, CD206, indicating their ability to activate M1 phenotype and aid in tumor regression. They are also capable of delivering siRNA to human macrophage-like cells efficiently and inhibit ~59% of the expression of target MMP-9 protein. These results indicate that this modified curdlan-based nanoparticle is a promising vehicle for the delivery of siRNAs to macrophages, which could open up treatment strategies for a range of diseases.
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Affiliation(s)
- Rubaiya Yunus Basha
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Geetha Venkatachalam
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600 036, India
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India.
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44
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Verma AH, Kumar TSS, Madhumathi K, Rubaiya Y, Ramalingan M, Doble M. Curcumin Releasing Eggshell Derived Carbonated Apatite Nanocarriers for Combined Anti-Cancer, Anti-Inflammatory and Bone Regenerative Therapy. J Nanosci Nanotechnol 2019; 19:6872-6880. [PMID: 31039839 DOI: 10.1166/jnn.2019.16640] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bone cancer or osteosarcoma is an aggressive cancer affecting the long bones and is treated by a combination of surgery and chemotherapy. Local drug delivery directly to the site of bone cancer and the use of plant-based drugs has been explored towards improving the efficacy and decreasing the toxicity of the anti-cancer drugs. Curcumin, derived from turmeric is highly effective against cancer cells and shows very low toxicity against normal cells. Bone repair is facilitated by use of bone substitutes such as bioceramics, amongst which the carbonated apatite (CA) nanocarriers closely mimic the natural bone mineral. In the current work, we have developed CA nanocarriers based local delivery of curcumin as an adjunct treatment for bone cancer. CA nanocarriers with 6 wt.% carbonate were prepared by wet chemical synthesis using synthetic derived (6SWCA) and eggshell derived (6EWCA) precursors along with hydroxyapatite (WHA) as a control. The X-ray diffraction (XRD) patterns showed the CAs to be phase pure with a mean crystallite size of 17 nm. The Fouriertransform infrared spectroscopy (FTIR) analysis of both CAs indicated the carbonate substitution as B-Type. The amount of carbonate substitution was observed to be around 6 wt.% using FTIR and CHNO elemental analyzer. The 6EWCA showed a greater loading (36%) and release (66%) of curcumin than 6SWCA and WHA nanocarriers. The bovine serum albumin (BSA) protein denaturation assay showed the curcumin loaded CAs to be highly anti-inflammatory while their anti-cancer activity was confirmed by the high cytotoxic activity against MG-63 human osteosarcoma cells. Conclusively, an eggshell derived apatite drug delivery system was found to be very suitable to cure osteosarcoma, prevent post-cancer inflammation and modulate bone repair and regeneration.
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Affiliation(s)
- Anish H Verma
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - T S Sampath Kumar
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - K Madhumathi
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Y Rubaiya
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
| | - Murugan Ramalingan
- Biomaterials and Stem Cell Engineering Lab, Centre for Biomaterials, Cellular and Molecular Theranostics, School of Mechanical Engineering, Vellore Institute of Technology (VIT) (Deemed to be University), Vellore 632014, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
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Sinha S, Manju SL, Doble M. Chalcone-Thiazole Hybrids: Rational Design, Synthesis, and Lead Identification against 5-Lipoxygenase. ACS Med Chem Lett 2019; 10:1415-1422. [PMID: 31620227 DOI: 10.1021/acsmedchemlett.9b00193] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 09/09/2019] [Indexed: 12/16/2022] Open
Abstract
A hybrid pharmacophore approach is used to design and synthesize novel chalcone-thiazole hybrid molecules. Herein, thiazole has been hybridized with chalcone to obtain a new class of 5-LOX inhibitors. In vitro biological evaluation showed that most of the compounds were better 5-LOX inhibitors than the positive control, Zileuton (IC50 = 1.05 ± 0.03 μM). The best compounds in the series, namely, 4k, 4n, and 4v (4k: IC50 = 0.07 ± 0.02 μM, 4n: IC50 = 0.08 ± 0.05 μM, 4v: 0.12 ± 0.04 μM) are found to be 10 times more active than previously reported 2-amino thiazole (2m: IC50 = 0.9 ± 0.1 μM) by us. Further, 4k has redox (noncompetitive) while 4n and 4v act through a competitive inhibition mechanism. SAR indicated that the presence of methoxy/methyl either in the vicinity of chalcone or both thiazole and chalcone contributed to the synergistic inhibitory effect.
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Affiliation(s)
- Shweta Sinha
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - S. L. Manju
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
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46
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Jayasree R, Kumar TSS, Venkateswari R, Nankar RP, Doble M. Eggshell derived brushite bone cement with minimal inflammatory response and higher osteoconductive potential. J Mater Sci Mater Med 2019; 30:113. [PMID: 31583477 DOI: 10.1007/s10856-019-6315-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/21/2019] [Indexed: 06/10/2023]
Abstract
Brushite cements are known for excellent osteoconductive and degradation properties, however, its widespread use is limited due to rapid setting time and poor mechanical properties. The eggshell derived calcium phosphates exhibits improved physical and biological properties due to the presence of biologically relevant ions. In this study, eggshell derived brushite cement (EB) was fabricated using β-tricalcium phosphate synthesized from eggshells. The presence of trace elements in EB prolonged its setting time. The size of brushite crystals in EB was found to be smaller than the pure brushite cement (PB) leading to increased initial compressive strength and higher in vitro degradation rate. The L6 and MG63 cell lines exhibited good biocompatibility with the cement at the end 72 h. In vivo studies of the cements were performed in rat calvarial defect model. Micro CT analysis showed faster degradation and accelerated bone formation in EB filled defect. Histological studies revealed infiltration of inflammatory cells into the implant site for both the cements till 6th week. However, inflammation was found to be significantly reduced at the 12th week in EB compared to PB leading to complete bone bridge formation. Multi-ion substituted EB seems to be a potential bone substitute material with a reasonable setting time for ease of handling, higher mechanical strength, minimal inflammatory response and higher bone regeneration.
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Affiliation(s)
- R Jayasree
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
| | - T S Sampath Kumar
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - R Venkateswari
- Department of Medical Biochemistry, Dr. ALM Mudaliar Postgraduate Institute of Basic Medical Sciences, University of Madras, Chennai, 600042, India
| | - Rakesh P Nankar
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, India
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Reddy MR, Hemaiswarya S, Kommidi H, Aidhen IS, Doble M. Acyl and Benzyl-C-
β-D-
Glucosides: Synthesis and Biostudies for Glucose-Uptake-Promoting Activity in C2C12 Mytotubes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Shanmugam Hemaiswarya
- Department of Biotechnology; Indian Institute of Technology Madras; 600036 Chennai India
| | - Harikrishna Kommidi
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Indrapal Singh Aidhen
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Mukesh Doble
- Department of Biotechnology; Indian Institute of Technology Madras; 600036 Chennai India
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48
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Venkatachalam G, Venkatesan N, Suresh G, Doble M. Cyclic β-(1, 2)-glucan blended poly DL lactic co glycolic acid (PLGA 10:90) nanoparticles for drug delivery. Heliyon 2019; 5:e02289. [PMID: 31517109 PMCID: PMC6732734 DOI: 10.1016/j.heliyon.2019.e02289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 04/12/2019] [Accepted: 08/08/2019] [Indexed: 11/16/2022] Open
Abstract
Our group had previously reported the encapsulation efficiency of cyclic β-(1, 2)-glucan for various drugs. The current study is aimed at evaluating the use of glucan as a drug carrier system by blending with poly lactic-co- glycolic acid (L:G = 10:90). Nanoparticles of glucan (0.5, 5, 10 and 20 wt %) blended with PLGA and gentamicin were synthesized. Encapsulation efficiency was higher for the blends (93% with 20 wt % of glucan) than the PLGA alone (79.8%). The presence of glucan enhanced both the biodegradability, and biocompatibility of PLGA. Degradation of the nanoparticles in vitro, was autocatalytic with an initial burst release of active drug and the release profile was modeled using the Korsmeyer-Peppas scheme. In vivo studies indicated that the drug released from the blends had high volume of distribution, and greater clearance from the system. Pharmacokinetics of the drug was predicted using a double exponential decay model. Blending with PLGA improved the drug release characteristics of the cyclic β-(1, 2)-glucan.
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Affiliation(s)
| | | | | | - Mukesh Doble
- Bioengineering and Drug Design Lab, Department of Biotechnology, IIT-Madras, Chennai, 600036, India
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Natarajan R, Puratchikody A, Muralidharan V, Doble M, Subramani A. 2D QSAR Analysis of Substituted Quinoxalines for their Antitubercular and Antileptospiral Activities. Curr Comput Aided Drug Des 2019; 15:182-192. [PMID: 30317999 DOI: 10.2174/1573409914666181011145922] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/10/2018] [Accepted: 10/03/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND The Quantitative structure activity relationship for thirty two novel substituted quinoxalines was performed for their antitubercular (Mycobacterium tuberculosis H37Rv) and antileptospiral (Leptospirainterrogans) activities. The quinoxalines were substituted with azetidinones, thiazolidinones and fluoroquinolones. Several compounds exhibited good activity against both the infections and they all possess fluoroquinolone moiety with the quinoxaline. METHODS The models developed showed good linear relationship (r2 = 0.71-0.88), with an internal predictive ability (q2> 0.61) and good external predictive ability (pred_r2>0.71). The compounds were separated into a training set on which regression was performed and a test set on which the predictive ability of the model was tested. Other statistical parameters including Ro2, Ro'2, k, k' and Z- score were in the acceptable range. RESULTS AND CONCLUSION The descriptors obtained explained the necessity of spatial orientation of atoms including branching and adjacency, presence of electronegative groups, balance between lipophilic elements and their binding strengths.
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Affiliation(s)
- Ramalakshmi Natarajan
- Department of Pharmaceutical Chemistry, C.L. Baid Metha College of Pharmacy, Chennai 600 097, India
| | - Ayarivan Puratchikody
- Department of Pharmaceutical Technology, Anna University Tiruchirappalli, Tiruchirappalli 620 024, India
| | - Vignesh Muralidharan
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
| | - Arunkumar Subramani
- Department of Pharmaceutical Sciences, College of Pharmacy, Gulf Medical University, 4184, Ajman, United Arab Emirates
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Sinha S, Doble M, Manju SL. 5-Lipoxygenase as a drug target: A review on trends in inhibitors structural design, SAR and mechanism based approach. Bioorg Med Chem 2019; 27:3745-3759. [PMID: 31331653 DOI: 10.1016/j.bmc.2019.06.040] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 01/22/2023]
Abstract
The most common inflammatory disease of the airways is asthma among children affecting around 235 million people worldwide. 5-Lipoxygenase (5-LOX) is a crucial enzyme which helps in the conversion of arachidonic acid (AA) to leukotrienes (LTs), the lipid mediators. It is associated with several inflammation related disorders such as asthma, allergy, and atherosclerosis. Therefore, it is considered as a promising target against inflammation and asthma. Currently, the only drug against 5-LOX which is available is Zileuton, while a few inhibitors are in clinical trial stages such as Atreleuton and Setileuton. So, there is a dire requirement in the area of progress of novel 5-LOX inhibitors which necessitates an understanding of their structure activity relationship and mode of action. In this review, novel 5-LOX inhibitors reported so far, their structural design, SAR and developmental strategies along with clinical updates are discussed over the last two decades.
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Affiliation(s)
- Shweta Sinha
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India; Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Tamil Nadu 600036, India.
| | - S L Manju
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India.
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