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Radhika R, Shankar R. Theoretical aspects of the adsorption of normal and modified base pairs of DNA on graphene models toward DNA sequencing. J Biomol Struct Dyn 2023:1-15. [PMID: 37909477 DOI: 10.1080/07391102.2023.2274969] [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: 03/21/2023] [Accepted: 08/24/2023] [Indexed: 11/03/2023]
Abstract
A theoretical understanding of the adsorption of DNA base pairs (GC, AT, CAF-T and CAF-C) on the graphene models (Gr, SiGr and SiGr-COOH) is investigated. Among the complexes, SiGr-COOH_AT is found to have the highest adsorption energies of -202.83 kcal/mol. The strong adsorption between DNA base pairs and the SiGr-COOH model leads to concomitant charge transfer responsible for the stability of the corresponding models and is verified with NBO analysis. AIM analysis discloses the high orbital overlap that signifies the strong interaction. Closed-shell interactions are observed through the positive values of total electron density, and it is also observed that Si-O(N) interaction has both covalent and electrostatic characteristics. This is the first theoretical attempt to investigate the adsorption of DNA base pairs on SiGr-COOH, which is more favourable than other models and may call for further experimental studies, which is crucial in developing new bio-sensors.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- R Radhika
- Department of Physics, Bharathiar University, Coimbatore, India
| | - R Shankar
- Department of Physics, Bharathiar University, Coimbatore, India
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Xiao M, Tang Q, Zeng S, Yang Q, Yang X, Tong X, Zhu G, Lei L, Li S. Emerging biomaterials for tumor immunotherapy. Biomater Res 2023; 27:47. [PMID: 37194085 DOI: 10.1186/s40824-023-00369-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 03/23/2023] [Indexed: 05/18/2023] Open
Abstract
BACKGROUND The immune system interacts with cancer cells in various intricate ways that can protect the individual from overproliferation of cancer cells; however, these interactions can also lead to malignancy. There has been a dramatic increase in the application of cancer immunotherapy in the last decade. However, low immunogenicity, poor specificity, weak presentation efficiency, and off-target side effects still limit its widespread application. Fortunately, advanced biomaterials effectively contribute immunotherapy and play an important role in cancer treatment, making it a research hotspot in the biomedical field. MAIN BODY This review discusses immunotherapies and the development of related biomaterials for application in the field. The review first summarizes the various types of tumor immunotherapy applicable in clinical practice as well as their underlying mechanisms. Further, it focuses on the types of biomaterials applied in immunotherapy and related research on metal nanomaterials, silicon nanoparticles, carbon nanotubes, polymer nanoparticles, and cell membrane nanocarriers. Moreover, we introduce the preparation and processing technologies of these biomaterials (liposomes, microspheres, microneedles, and hydrogels) and summarize their mechanisms when applied to tumor immunotherapy. Finally, we discuss future advancements and shortcomings related to the application of biomaterials in tumor immunotherapy. CONCLUSION Research on biomaterial-based tumor immunotherapy is booming; however, several challenges remain to be overcome to transition from experimental research to clinical application. Biomaterials have been optimized continuously and nanotechnology has achieved continuous progression, ensuring the development of more efficient biomaterials, thereby providing a platform and opportunity for breakthroughs in tumor immunotherapy.
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Affiliation(s)
- Minna Xiao
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Qinglai Tang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Shiying Zeng
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Qian Yang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Xinming Yang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Xinying Tong
- Department of Hemodialysis, the Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Gangcai Zhu
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Lanjie Lei
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
| | - Shisheng Li
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.
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Cao B, Wang C, Zhou Z. Insights into the interactions between cellulose and biological molecules. Carbohydr Res 2023; 523:108738. [PMID: 36587542 DOI: 10.1016/j.carres.2022.108738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/22/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022]
Abstract
Understanding the interactions between carbohydrate polymer molecules and biomolecules is of primary significance for its application. In this paper, the interaction between cellulose and biomolecules was studied using density functional theory method, in which cellobiose, nucleobases, and aromatic amino acids were employed as the structural models of cellulose, DNA, and protein, respectively. Quantitative molecular surface electrostatic potential (ESP) results well represented how cellulose perceived by organism during the recognition. The structural and energetic studies of cellulose with biomolecules complexes show that weak interactions, such as hydrogen bonding interaction, vdW interaction, and pi-H interaction, play an important role in stabilizing these complexes. Through systematic wavefunction analysis, including reduced density gradient (RDG) and natural bond orbital (NBO) methods, the nature of these weak interactions was revealed and further graphically visualized. In-depth understanding of the interaction between cellobiose with biological model molecules may shed lights on the application of carbohydrate polymer-based materials in biological fields.
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Affiliation(s)
- Bobo Cao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, China
| | - Chao Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China.
| | - Zhengyu Zhou
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, China.
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Putri AD, Murti BT, Kanchi S, Sabela MI, Bisetty K, Tiwari A, Inamuddin, Asiri AM. Computational studies on the molecular insights of aptamer induced poly(N-isopropylacrylamide)-graft-graphene oxide for on/off- switchable whole-cell cancer diagnostics. Sci Rep 2019; 9:7873. [PMID: 31133671 PMCID: PMC6536548 DOI: 10.1038/s41598-019-44378-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 05/13/2019] [Indexed: 01/04/2023] Open
Abstract
This work deals with first-principles and in silico studies of graphene oxide-based whole-cell selective aptamers for cancer diagnostics utilising a tunable-surface strategy. Herein, graphene oxide (GO) was constructed as a surface-based model with poly(N-isopropylacrylamide) (PNIPAM) covalently grafted as an "on/off"-switch in triggering interactions with the cancer-cell protein around its lower critical solution temperature. The atomic building blocks of the aptamer and the PNIPAM adsorbed onto the GO was investigated at the density functional theory (DFT) level. The presence of the monomer of PNIPAM stabilised the system's π-π interaction between GO and its nucleobases as confirmed by higher bandgap energy, satisfying the eigenvalues of the single-point energy observed rather than the nucleobase and the GO complex independently. The unaltered geometrical structures of the surface emphasise the physisorption type interaction between the nucleobase and the GO/NIPAM surface. The docking result for the aptamer and the protein, highlighted the behavior of the PNIPAM-graft-GO is exhibiting globular and extended conformations, further supported by molecular dynamics (MD) simulations. These studies enabled a better understanding of the thermal responsive behavior of the polymer-enhanced GO complex for whole-cell protein interactions through computational methods.
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Affiliation(s)
- Athika Darumas Putri
- Department of Chemistry, Faculty of Applied Science, Durban University of Technology, Durban, 4000, South Africa
- Semarang College of Pharmaceutical Sciences, Jl. Letnand Jendral Sarwo Edi Wibowo, Semarang City, 50192, Indonesia
| | - Bayu Tri Murti
- Department of Chemistry, Faculty of Applied Science, Durban University of Technology, Durban, 4000, South Africa
- Semarang College of Pharmaceutical Sciences, Jl. Letnand Jendral Sarwo Edi Wibowo, Semarang City, 50192, Indonesia
| | - Suvardhan Kanchi
- Department of Chemistry, Faculty of Applied Science, Durban University of Technology, Durban, 4000, South Africa
| | - Myalowenkosi I Sabela
- Department of Chemistry, Faculty of Applied Science, Durban University of Technology, Durban, 4000, South Africa
| | - Krishna Bisetty
- Department of Chemistry, Faculty of Applied Science, Durban University of Technology, Durban, 4000, South Africa.
| | - Ashutosh Tiwari
- Institute of Advanced Materials, UCS, Teknikringen 4A, Mjärdevi Science Park, SE-58330, Linköping, Sweden
- Vinoba Bhave Research Institute, Binda-Dhokri Road, Saidabad, Allahabad, 221508, India
| | - Inamuddin
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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Rad AS, Aghaei SM, Aali E, Peyravi M, Jahanshahi M. Application of chromium‐doped fullerene as a carrier for thymine and uracil nucleotides: Comprehensive density functional theory calculations. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4070] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ali Shokuhi Rad
- Department of Chemical Engineering, Qaemshahr BranchIslamic Azad University Qaemshahr Iran
| | - Sadegh Mehdi Aghaei
- Quantum Electronic Structures Technology Lab, Department of Electrical and Computer EngineeringFlorida International University Miami Florida 33174 U.S.A
| | - Elaheh Aali
- Department of Chemical Engineering, Qaemshahr BranchIslamic Azad University Qaemshahr Iran
| | - Majid Peyravi
- Faculty of Chemical EngineeringBabol University of Technology Babol Iran
| | - Mohsen Jahanshahi
- Faculty of Chemical EngineeringBabol University of Technology Babol Iran
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