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Crapnell RD, Bernalte E, Sigley E, Banks CE. Recycled PETg embedded with graphene, multi-walled carbon nanotubes and carbon black for high-performance conductive additive manufacturing feedstock. RSC Adv 2024; 14:8108-8115. [PMID: 38464694 PMCID: PMC10921296 DOI: 10.1039/d3ra08524d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 02/22/2024] [Indexed: 03/12/2024] Open
Abstract
The first report of conductive recycled polyethylene terephthalate glycol (rPETg) for additive manufacturing and electrochemical applications is reported herein. Graphene nanoplatelets (GNP), multi-walled carbon nanotubes (MWCNT) and carbon black (CB) were embedded within a recycled feedstock to produce a filament with lower resistance than commercially available conductive polylactic acid (PLA). In addition to electrical conductivity, the rPETg was able to hold >10 wt% more conductive filler without the use of a plasticiser, showed enhanced temperature stability, had a higher modulus, improved chemical resistance, lowered levels of solution ingress, and could be sterilised in ethanol. Using a mix of carbon materials CB/MWCNT/GNP (25/2.5/2.5 wt%) the electrochemical performance of the rPETg filament was significantly enhanced, providing a heterogenous electrochemical rate constant, k0, equating to 0.88 (±0.01) × 10-3 cm s-1 compared to 0.46 (±0.02) × 10-3 cm s-1 for commercial conductive PLA. This work presents a paradigm shift within the use of additive manufacturing and electrochemistry, allowing the production of electrodes with enhanced electrical, chemical and mechanical properties, whilst improving the sustainability of the production through the use of recycled feedstock.
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Affiliation(s)
- Robert D Crapnell
- Faculty of Science and Engineering, Manchester Metropolitan University Chester Street M1 5GD UK +44(0)1612471196
| | - Elena Bernalte
- Faculty of Science and Engineering, Manchester Metropolitan University Chester Street M1 5GD UK +44(0)1612471196
| | - Evelyn Sigley
- Faculty of Science and Engineering, Manchester Metropolitan University Chester Street M1 5GD UK +44(0)1612471196
| | - Craig E Banks
- Faculty of Science and Engineering, Manchester Metropolitan University Chester Street M1 5GD UK +44(0)1612471196
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2
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Kalkal A, Tiwari A, Sharma D, Baghel MK, Kumar P, Pradhan R, Packirisamy G. Air-brush spray coated Ti 3C 2-MXene-graphene nanohybrid thin film based electrochemical biosensor for cancer biomarker detection. Int J Biol Macromol 2023; 253:127260. [PMID: 37802449 DOI: 10.1016/j.ijbiomac.2023.127260] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023]
Abstract
Cancer is a significant health hazard worldwide and poses a greater threat to the quality of human life. Quantifying cancer biomarkers with high sensitivity has demonstrated considerable potential for compelling, quick, cost-effective, and minimally invasive early-stage cancer detection. In line with this, efforts have been made towards developing an f-graphene@Ti3C2-MXene nanohybrid thin-film-based electrochemical biosensing platform for efficient carcinoembryonic antigen (CEA) detection. The air-brush spray coating technique has been utilized for depositing the uniform thin films of amine functionalized graphene (f-graphene) and Ti3C2-MXene nanohybrid on ITO-coated glass substrate. The chemical bonding and morphological studies of the deposited nanohybrid thin films are characterized by advanced analytical tools, including XRD, XPS, and FESEM. The EDC-NHS chemistry is employed to immobilize the deposited thin films with monoclonal anti-CEA antibodies, followed by blocking the non-specific binding sites with BSA. The electrochemical response and optimization of biosensing parameters have been conducted using CV and DPV techniques. The optimized BSA/anti-CEA/f-graphene@Ti3C2-MXene immunoelectrode showed the ability to detect CEA biomarker from 0.01 pg mL-1 to 2000 ng mL-1 having a considerably lower detection limit of 0.30 pg mL-1.
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Affiliation(s)
- Ashish Kalkal
- iHub Divyasmapark, Technology Innovation Hub, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Ayush Tiwari
- iHub Divyasmapark, Technology Innovation Hub, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Deepanshu Sharma
- iHub Divyasmapark, Technology Innovation Hub, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Manoj Kumar Baghel
- iHub Divyasmapark, Technology Innovation Hub, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Pramod Kumar
- Institute Instrumentation Center, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Rangadhar Pradhan
- iHub Divyasmapark, Technology Innovation Hub, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India.
| | - Gopinath Packirisamy
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India; Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India.
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Subaramaniyam U, Ramalingam D, Balan R, Paital B, Sar P, Ramalingam N. Annonaceous acetogenins as promising DNA methylation inhibitors to prevent and treat leukemogenesis - an in silico approach. J Biomol Struct Dyn 2023:1-14. [PMID: 38149859 DOI: 10.1080/07391102.2023.2297010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/10/2023] [Indexed: 12/28/2023]
Abstract
Leukemia is a haematological malignancy affecting blood and bone marrow, ranking 10th among the other common cancers. DNA methylation is an epigenetic dysregulation that plays a critical role in leukemogenesis. DNA methyltransferases (DNMTs) such as DNMT1, DNMT3A and DNMT3B are the key enzymes catalysing DNA methylation. Inhibition of DNMT1 with secondary metabolites from medicinal plants helps reverse DNA methylation. The present study focuses on inhibiting DNMT1 protein (PDB ID: 3PTA) with annonaceous acetogenins through in-silico studies. The docking and molecular dynamic (MD) simulation study was carried out using Schrödinger Maestro and Desmond, respectively. These compounds' drug likeliness, ADMET properties and bioactivity scores were analysed. About 76 different acetogenins were chosen for this study, among which 17 showed the highest binding energy in the range of -8.312 to -10.266 kcal/mol. The compounds with the highest negative binding energy were found to be annohexocin (-10.266 kcal/mol), isoannonacinone (-10.209 kcal/mol) and annonacin (-9.839 kcal/mol). MD simulation results reveal that annonacin remains stable throughout the simulation time of 100 ns and also binds to the catalytic domain of DNMT1 protein. From the above results, it can be concluded that annonacin has the potential to inhibit the DNA methylation process and prevent leukemogenesis.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Udayadharshini Subaramaniyam
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
| | - Divya Ramalingam
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
| | - Ranjini Balan
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
| | - Biswaranjan Paital
- Redox Regulation Laboratory, Department of Zoology, College of Basic Science and Humanities, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Pranati Sar
- Biotechnology Department, Silver Oak Institute of Science, Silver Oak University, Ahmedabad, India
| | - Nirmaladevi Ramalingam
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
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Khurana A, Allawadhi P, Singh V, Khurana I, Yadav P, Sathua KB, Allwadhi S, Banothu AK, Navik U, Bharani KK. Antimicrobial and anti-viral effects of selenium nanoparticles and selenoprotein based strategies: COVID-19 and beyond. J Drug Deliv Sci Technol 2023; 86:104663. [PMID: 37362903 PMCID: PMC10249347 DOI: 10.1016/j.jddst.2023.104663] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 05/31/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023]
Abstract
Deficiency of selenium (Se) has been described in a significant number of COVID-19 patients having a higher incidence of mortality, which makes it a pertinent issue to be addressed clinically for effective management of the COVID-19 pandemic. Se nanoparticles (SeNPs) provide a unique option for managing the havoc caused by the COVID-19 pandemic. SeNPs possess promising anti-inflammatory and anti-fibrotic effects by virtue of their nuclear factor kappa-light-chain-stimulator of activated B cells (NFκB), mitogen-activated protein kinase (MAPKs), and transforming growth factor-beta (TGF-β) modulatory activity. In addition, SeNPs possess remarkable immunomodulatory effects, making them a suitable option for supplementation with a much lower risk of toxicity compared to their elemental counterpart. Further, SeNPs have been shown to curtail viral and microbial infections, thus, making it a novel means to halt viral growth. In addition, it can be administered in the form of aerosol spray, direct injection, or infused thin-film transdermal patches to reduce the spread of this highly contagious viral infection. Moreover, a considerable decrease in the expression of selenoprotein along with enhanced expression of IL-6 in COVID-19 suggests a potential association among selenoprotein expression and COVID-19. In this review, we highlight the unique antimicrobial and antiviral properties of SeNPs and the immunomodulatory potential of selenoproteins. We provide the rationale behind their potentially interesting properties and further exploration in the context of microbial and viral infections. Further, the importance of selenoproteins and their role in maintaining a successful immune response along with their association to Se status is summarized.
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Affiliation(s)
- Amit Khurana
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science (CVSc), Rajendranagar, Hyderabad, 500030, PVNRTVU, Telangana, India
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science (CVSc), Warangal, 506166, PVNRTVU, Telangana, India
| | - Prince Allawadhi
- Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT) Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Vishakha Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT) Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Isha Khurana
- Department of Pharmaceutical Chemistry, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Poonam Yadav
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, 151401, Punjab, India
| | - Kshirod Bihari Sathua
- Department of Pharmacology, College of Pharmaceutical Sciences, Konark Marine Drive Road, Puri, 752002, Odisha, India
| | - Sachin Allwadhi
- Department of Computer Science and Engineering, University Institute of Engineering and Technology (UIET), Maharshi Dayanand University (MDU), Rohtak, 124001, Haryana, India
| | - Anil Kumar Banothu
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science (CVSc), Rajendranagar, Hyderabad, 500030, PVNRTVU, Telangana, India
| | - Umashanker Navik
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, 151401, Punjab, India
| | - Kala Kumar Bharani
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science (CVSc), Warangal, 506166, PVNRTVU, Telangana, India
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Bhandari S, Yadav V, Ishaq A, Sanipini S, Ekhator C, Khleif R, Beheshtaein A, Jhajj LK, Khan AW, Al Khalifa A, Naseem MA, Bellegarde SB, Nadeem MA. Trends and Challenges in the Development of 3D-Printed Heart Valves and Other Cardiac Implants: A Review of Current Advances. Cureus 2023; 15:e43204. [PMID: 37565179 PMCID: PMC10411854 DOI: 10.7759/cureus.43204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2023] [Indexed: 08/12/2023] Open
Abstract
This article provides a comprehensive review of the current trends and challenges in the development of 3D-printed heart valves and other cardiac implants. By providing personalized solutions and pushing the limits of regenerative medicine, 3D printing technology has revolutionized the field of cardiac healthcare. The use of several organic and synthetic polymers in 3D printing heart valves is explored in this article, with emphasis on both their benefits and drawbacks. In cardiac tissue engineering, stem cells are essential, and their potential to lessen immunological rejection and thrombogenic consequences is highlighted. In the clinical applications section, the article emphasizes the importance of 3D printing in preoperative planning. Surgery results are enhanced when surgeons can visualize and assess the size and placement of implants using patient-specific anatomical models. Customized implants that are designed to match the anatomy of a particular patient reduce the likelihood of complications and enhance postoperative results. The development of physiologically active cardiac implants, made possible by 3D bioprinting, shows promise by eliminating the need for artificial valves. In conclusion, this paper highlights cutting-edge research and the promise of 3D-printed cardiac implants to improve patient outcomes and revolutionize cardiac treatment.
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Affiliation(s)
| | - Vikas Yadav
- Internal Medicine, Pt. B.D. Sharma Postgraduate Institute of Medical Sciences, Rohtak, IND
| | - Aqsa Ishaq
- Internal Medicine, Shaheed Mohtarma Benazir Bhutto Medical University, Larkana, PAK
| | | | - Chukwuyem Ekhator
- Neuro-Oncology, New York Institute of Technology, College of Osteopathic Medicine, Old Westbury, USA
| | - Rafeef Khleif
- Medicine, Xavier University School of Medicine, Aruba, ABW
| | - Alee Beheshtaein
- Internal Medicine, Xavier University School of Medicine, Chicago, USA
| | - Loveleen K Jhajj
- Internal Medicine, Xavier University School of Medicine, Oranjestad, ABW
| | | | - Ahmed Al Khalifa
- Medicine, College of Medicine, Sulaiman Alrajhi University, Al Bukayriyah, SAU
| | | | - Sophia B Bellegarde
- Pathology and Laboratory Medicine, American University of Antigua, St. John's, ATG
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