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Iannazzo D, Giofrè SV, Espro C, Celesti C. Graphene-based materials as nanoplatforms for antiviral therapy and prophylaxis. Expert Opin Drug Deliv 2024; 21:751-766. [PMID: 38841752 DOI: 10.1080/17425247.2024.2364652] [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: 01/11/2024] [Accepted: 06/03/2024] [Indexed: 06/07/2024]
Abstract
INTRODUCTION The dramatic effects caused by viral diseases have prompted the search for effective therapeutic and preventive agents. In this context, 2D graphene-based nanomaterials (GBNs) have shown great potential for antiviral therapy, enabling the functionalization and/or decoration with biomolecules, metals and polymers, able to improve their interaction with viral nanoparticles. AREAS COVERED This review summarizes the most recent advances of the antiviral research related to 2D GBNs, based on their antiviral mechanism of action. Their ability to inactivate viruses by inhibiting the entry inside cells, or through drug/gene delivery, or by stimulating the host immune response are here discussed. As reported, biological studies performed in vitro and/or in vivo allowed to demonstrate the antiviral activity of the developed GBNs, at different stages of the virus life cycle and the evaluation of their long-term toxicity. Other mechanisms closely related to the physicochemical properties of GBNs are also reported, demonstrating the potential of these materials for antiviral prophylaxis. EXPERT OPINION GBNs represent valuable tools to fight emerging or reemerging viral infections. However, their translation into the clinic requires standardized scale-up procedures leading to the reliable and reproducible synthesis of these nanomaterials with suitable physicochemical properties, as well as more in-depth pharmacological and toxicological investigations. We believe that multidisciplinary approaches will give valuable solutions to overcome the encountered limitations in the application of GBNs in biomedical and clinical field.
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Affiliation(s)
- Daniela Iannazzo
- Department of Engineering, University of Messina, Messina, Italy
| | - Salvatore V Giofrè
- Department of Chemical, Biological, Pharmaceutical and Environmental Chemistry, University of Messina, Messina, Italy
| | - Claudia Espro
- Department of Engineering, University of Messina, Messina, Italy
| | - Consuelo Celesti
- Department of Engineering, University of Messina, Messina, Italy
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Huang W, Wang Z, Luo J. Molecular Dynamics Study of the Curvature-Driven Interactions between Carbon-Based Nanoparticles and Amino Acids. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020482. [PMID: 36677540 PMCID: PMC9861389 DOI: 10.3390/molecules28020482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/29/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023]
Abstract
We researched the interaction between six representative carbon-based nanoparticles (CBNs) and 20 standard amino acids through all-atom molecular dynamics simulations. The six carbon-based nanoparticles are fullerene(C60), CNT55L3, CNT1010L3, CNT1515L3, CNT2020L3, and two-dimensional graphene (graphene33). Their curvatures decrease sequentially, and all of the CNTs are single-walled carbon nanotubes. We observed that as the curvature of CBNs decreases, the adsorption effect of the 20 amino acids with them has an increasing trend. In addition, we also used multi-dimensional clustering to analyze the adsorption effects of 20 amino acids on six carbon-based nanoparticles. We observed that the π-π interaction still plays an extremely important role in the adsorption of amino acids on carbon-based nanoparticles. Individual long-chain amino acids and "Benzene-like" Pro also have a strong adsorption effect on carbon-based nanoparticles.
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Affiliation(s)
- Wanying Huang
- T-Life Research Center, State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
- Zhejiang Lab, Nanhu-Kechuang Avenue, Yuhang District, Hangzhou 310000, China
| | - Zhenyu Wang
- T-Life Research Center, State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
| | - Junyan Luo
- Department of Physics, Zhejiang University of Science and Technology, Hangzhou 310000, China
- Correspondence:
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Functionalized carbon nanotubes as an alternative to traditional anti-HIV-1 protease inhibitors: An understanding towards Nano-medicine development through MD simulations. J Mol Graph Model 2022; 117:108280. [PMID: 35963109 DOI: 10.1016/j.jmgm.2022.108280] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 01/14/2023]
Abstract
The Human Immunodeficiency Virus (HIV) has been the source of epidemic infection of AIDS for a longer period. One of the most difficult tasks is identifying novel medications that can help to decrease or control this global health hazard by overcoming drug resistance. In recent decades' nanoparticles are emerging as extremely relevant in drug delivery platforms. In the current study, the pristine (SWCNT) and hydroxyl functionalized (SWCNT-OH) versions of the SWCNT were investigated as inhibitors against the wild-type (WT) and three key mutants of HIV-1 protease (HIV-pr) (I50V, V82A, and I84V). Molecular docking of SWCNT in the catalytic domain and running all-atom MD simulations of all complexes are also part of this project. A thorough inspection of conformational dynamics from 50 ns trajectories reveals that both the pristine and SWCNT-OH can fit right to the pocket region of HIV-pr and govern flap dynamics. The binding affinity of the four HIV-pr-SWCNT/SWCNT-OH complexes was further investigated using MM-PBSA-dependent binding free energy studies. In most mutants and WT systems, SWCNT-OH was reported to bind proportionately many folds (kcal/mol) more than pristine SWCNTs. Hence, SWCNTs are possible HIV-pr inhibitors in terms of their stable existence in the pocket area, stronger binding to the protease, and regulation of flap dynamics in controlling the active site volume, which have vast potential for applications against drug resistance.
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Huang W, Ou X, Luo J. Inverse Boltzmann Iterative Multi-Scale Molecular Dynamics Study between Carbon Nanotubes and Amino Acids. Molecules 2022; 27:2785. [PMID: 35566140 PMCID: PMC9104776 DOI: 10.3390/molecules27092785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 11/17/2022] Open
Abstract
Our work uses Iterative Boltzmann Inversion (IBI) to study the coarse-grained interaction between 20 amino acids and the representative carbon nanotube CNT55L3. IBI is a multi-scale simulation method that has attracted the attention of many researchers in recent years. It can effectively modify the coarse-grained model derived from the Potential of Mean Force (PMF). IBI is based on the distribution result obtained by All-Atom molecular dynamics simulation; that is, the target distribution function and the PMF potential energy are extracted, and then, the initial potential energy extracted by the PMF is used to perform simulation iterations using IBI. Our research results have been through more than 100 iterations, and finally, the distribution obtained by coarse-grained molecular simulation (CGMD) can effectively overlap with the results of all-atom molecular dynamics simulation (AAMD). In addition, our work lays the foundation for the study of force fields for the simulation of the coarse-graining of super-large proteins and other important nanoparticles.
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Affiliation(s)
- Wanying Huang
- T-Life Research Center, State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China;
| | - Xinwen Ou
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China;
| | - Junyan Luo
- Department of Physics, Zhejiang University of Science and Technology, Hangzhou 310023, China
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Sivasankarapillai VS, Madaswamy SL, Dhanusuraman R. Role of nanotechnology in facing SARS-CoV-2 pandemic: Solving crux of the matter with a hopeful arrow in the quiver. SENSORS INTERNATIONAL 2021; 2:100096. [PMID: 34766054 PMCID: PMC8069635 DOI: 10.1016/j.sintl.2021.100096] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 01/01/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a positive-sense single-stranded RNA virus species with a zoonotic origin and responsible for the coronavirus disease 2019(COVID-19). This novel virus has an extremely high infectious rate, which occurs through the contact of contaminated surfaces and also by cough, sneeze, hand-to-mouth-to-eye contact with an affected person. The progression of infection, which goes beyond complications of pneumonia to affecting other physiological functions which cause gastrointestinal, Renal, and neurological complication makes this a life threatening condition. Intense efforts are going across the scientific community in elucidating various aspects of this virus, such as understanding the pathophysiology of the disease, molecular biology, and cellular pathways of viral replication. We hope that nanotechnology and material science can provide a significant contribution to tackle this problem through both diagnostic and therapeutic strategies. But the area is still in the budding phase, which needs urgent and significant attention. This review provides a brief idea regarding the various nanotechnological approaches reported for managing COVID-19 infection. The nanomaterials recently said to have good antiviral activities like Carbon nanotubes (CNTs) and quantum dots (QDs) were also discussed since they are also in the emerging stage of attaining research interest regarding antiviral applications.
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Affiliation(s)
- Vishnu Sankar Sivasankarapillai
- Nano Electrochemistry Lab(NEL), Department of Chemistry, National Institute of Technology Puducherry, Karaikal, 609-609, India
| | - Suba Lakshmi Madaswamy
- Nano Electrochemistry Lab(NEL), Department of Chemistry, National Institute of Technology Puducherry, Karaikal, 609-609, India
| | - Ragupathy Dhanusuraman
- Nano Electrochemistry Lab(NEL), Department of Chemistry, National Institute of Technology Puducherry, Karaikal, 609-609, India
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TOLEDO GABRIELGDE, TOLEDO VICTORH, LANFREDI ALEXANDREJ, ESCOTE MARCIA, CHAMPI ANA, SILVA MARIACRISTINACDA, NANTES-CARDOSO ISELIL. Promising Nanostructured Materials against Enveloped Virus. ACTA ACUST UNITED AC 2020; 92:e20200718. [DOI: 10.1590/0001-3765202020200718] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/18/2020] [Indexed: 12/23/2022]
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Li D, Ji B. Protein conformational transitions coupling with ligand interactions: Simulations from molecules to medicine. MEDICINE IN NOVEL TECHNOLOGY AND DEVICES 2019. [DOI: 10.1016/j.medntd.2019.100026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Yeo J, Jung G, Tarakanova A, Martín-Martínez FJ, Qin Z, Cheng Y, Zhang YW, Buehler MJ. Multiscale modeling of keratin, collagen, elastin and related human diseases: Perspectives from atomistic to coarse-grained molecular dynamics simulations. EXTREME MECHANICS LETTERS 2018; 20:112-124. [PMID: 33344740 PMCID: PMC7745951 DOI: 10.1016/j.eml.2018.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Scleroproteins are an important category of proteins within the human body that adopt filamentous, elongated conformations in contrast with typical globular proteins. These include keratin, collagen, and elastin, which often serve a common mechanical function in structural support of cells and tissues. Genetic mutations alter these proteins, disrupting their functions and causing diseases. Computational characterization of these mutations has proven to be extremely valuable in identifying the intricate structure-function relationships of scleroproteins from the molecular scale up, especially if combined with multiscale experimental analysis and the synthesis of model proteins to test specific structure-function relationships. In this work, we review numerous critical diseases that are related to keratin, collagen, and elastin, and through several case studies, we propose ways of extensively utilizing multiscale modeling, from atomistic to coarse-grained molecular dynamics simulations, to uncover the molecular origins for some of these diseases and to aid in the development of novel cures and therapies. As case studies, we examine the effects of the genetic disease Epidermolytic Hyperkeratosis (EHK) on the structure and aggregation of keratins 1 and 10; we propose models to understand the diseases of Osteogenesis Imperfecta (OI) and Alport syndrome (AS) that affect the mechanical and aggregation properties of collagen; and we develop atomistic molecular dynamics and elastic network models of elastin to determine the role of mutations in diseases such as Cutis Laxa and Supravalvular Aortic Stenosis on elastin's structure and molecular conformational motions and implications for assembly.
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Affiliation(s)
- Jingjie Yeo
- Laboratory for Atomistic and Molecular Mechanics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore 138632
| | - GangSeob Jung
- Laboratory for Atomistic and Molecular Mechanics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Anna Tarakanova
- Laboratory for Atomistic and Molecular Mechanics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Francisco J. Martín-Martínez
- Laboratory for Atomistic and Molecular Mechanics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Zhao Qin
- Laboratory for Atomistic and Molecular Mechanics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Yuan Cheng
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore 138632
| | - Yong-Wei Zhang
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore 138632
| | - Markus J. Buehler
- Laboratory for Atomistic and Molecular Mechanics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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Du C, Hu X, Cheng Y, Gao J, Zhang YW, Su K, Li Z, Zhang N, Chang N, Zeng K. Synergetically understanding the interaction between nano/microspheres and peptide for controllable drug loading via experimental and theoretical approaches. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 83:169-176. [DOI: 10.1016/j.msec.2017.10.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 10/02/2017] [Accepted: 10/04/2017] [Indexed: 12/28/2022]
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Qu S, Huang S, Pan X, Yang L, Mei H. Constructing Interconsistent, Reasonable, and Predictive Models for Both the Kinetic and Thermodynamic Properties of HIV-1 Protease Inhibitors. J Chem Inf Model 2016; 56:2061-2068. [PMID: 27624663 DOI: 10.1021/acs.jcim.6b00326] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Accumulated evidence suggests that the in vivo biological potency of a ligand is more strongly correlated with the binding/unbinding kinetics than the equilibrium thermodynamics of the protein-ligand interaction (PLI). However, the existing experimental and computational techniques are largely insufficient and limited in large-scale measurements or accurate predictions of the kinetic properties of PLI. In this work, elaborate efforts have been made to develop interconsistent, reasonable, and predictive models of the association rate constant (kon), dissociation rate constant (koff), and equilibrium dissociation constant (KD) of a series of HIV protease inhibitors with different structural skeletons. The results showed that nine Volsurf descriptors derived from water (OH2) and hydrophobic (DRY) probes are key molecular determinants for the kinetic and thermodynamic properties of HIV-1 protease inhibitors. To the best of our knowledge, this is the first time that interconsistent and reasonable models with strong prediction power have been established for both the kinetic and thermodynamic properties of HIV protease inhibitors.
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Affiliation(s)
- Sujun Qu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Chongqing University , Chongqing 400044, China
| | - Shuheng Huang
- College of Bioengineering, Chongqing University , Chongqing 400044, China
| | - Xianchao Pan
- College of Bioengineering, Chongqing University , Chongqing 400044, China
| | - Li Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Chongqing University , Chongqing 400044, China.,College of Bioengineering, Chongqing University , Chongqing 400044, China
| | - Hu Mei
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Chongqing University , Chongqing 400044, China.,College of Bioengineering, Chongqing University , Chongqing 400044, China
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Cheng Y, Koh LD, Li D, Ji B, Zhang Y, Yeo J, Guan G, Han MY, Zhang YW. Peptide-Graphene Interactions Enhance the Mechanical Properties of Silk Fibroin. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21787-96. [PMID: 26364925 DOI: 10.1021/acsami.5b05615] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Studies reveal that biomolecules can form intriguing molecular structures with fascinating functionalities upon interaction with graphene. Then, interesting questions arise. How does silk fibroin interact with graphene? Does such interaction lead to an enhancement in its mechanical properties? In this study, using large-scale molecular dynamics simulations, we first examine the interaction of graphene with several typical peptide structures of silk fibroin extracted from different domains of silk fibroin, including pure amorphous (P1), pure crystalline (P2), a segment from N-terminal (P3), and a combined amorphous and crystalline segment (P4), aiming to reveal their structural modifications. Our study shows that graphene can have intriguing influences on the structures formed by the peptides with sequences representing different domains of silk fibroin. In general, for protein domains with stable structure and strong intramolecular interaction (e.g., β-sheets), graphene tends to compete with the intramolecular interactions and thus weaken the interchain interaction and reduce the contents of β-sheets. For the silk domains with random or less ordered secondary structures and weak intramolecular interactions, graphene tends to enhance the stability of peptide structures; in particular, it increases the contents of helical structures. Thereafter, tensile simulations were further performed on the representative peptides to investigate how such structure modifications affect their mechanical properties. It was found that the strength and resilience of the peptides are enhanced through their interaction with graphene. The present work reveals interesting insights into the interactions between silk peptides and graphene, and contributes in the efforts to enhance the mechanical properties of silk fibroin.
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Affiliation(s)
- Yuan Cheng
- Institute of High Performance Computing, A*STAR , Singapore 138632, Singapore
| | - Leng-Duei Koh
- Institute of Materials Research and Engineering, A*STAR , Singapore 117602, Singapore
- Department of Biomedical Engineering, National University of Singapore , Singapore 117575, Singapore
| | - Dechang Li
- Biomechanics and Biomaterials Laboratory, Department of Applied Mechanics, Beijing Institute of Technology , Beijing 100081, China
| | - Baohua Ji
- Biomechanics and Biomaterials Laboratory, Department of Applied Mechanics, Beijing Institute of Technology , Beijing 100081, China
| | - Yingyan Zhang
- School of Computing, Engineering, and Mathematics, Western Sydney University , Locked Bag 1797, Penrith NSW 2751, Australia
| | - Jingjie Yeo
- Institute of High Performance Computing, A*STAR , Singapore 138632, Singapore
| | - Guijian Guan
- Institute of High Performance Computing, A*STAR , Singapore 138632, Singapore
- Institute of Materials Research and Engineering, A*STAR , Singapore 117602, Singapore
| | - Ming-Yong Han
- Institute of Materials Research and Engineering, A*STAR , Singapore 117602, Singapore
- Department of Biomedical Engineering, National University of Singapore , Singapore 117575, Singapore
| | - Yong-Wei Zhang
- Institute of High Performance Computing, A*STAR , Singapore 138632, Singapore
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Esposito EX, Hopfinger AJ, Shao CY, Su BH, Chen SZ, Tseng YJ. Exploring possible mechanisms of action for the nanotoxicity and protein binding of decorated nanotubes: interpretation of physicochemical properties from optimal QSAR models. Toxicol Appl Pharmacol 2015. [PMID: 26200234 DOI: 10.1016/j.taap.2015.07.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Carbon nanotubes have become widely used in a variety of applications including biosensors and drug carriers. Therefore, the issue of carbon nanotube toxicity is increasingly an area of focus and concern. While previous studies have focused on the gross mechanisms of action relating to nanomaterials interacting with biological entities, this study proposes detailed mechanisms of action, relating to nanotoxicity, for a series of decorated (functionalized) carbon nanotube complexes based on previously reported QSAR models. Possible mechanisms of nanotoxicity for six endpoints (bovine serum albumin, carbonic anhydrase, chymotrypsin, hemoglobin along with cell viability and nitrogen oxide production) have been extracted from the corresponding optimized QSAR models. The molecular features relevant to each of the endpoint respective mechanism of action for the decorated nanotubes are also discussed. Based on the molecular information contained within the optimal QSAR models for each nanotoxicity endpoint, either the decorator attached to the nanotube is directly responsible for the expression of a particular activity, irrespective of the decorator's 3D-geometry and independent of the nanotube, or those decorators having structures that place the functional groups of the decorators as far as possible from the nanotube surface most strongly influence the biological activity. These molecular descriptors are further used to hypothesize specific interactions involved in the expression of each of the six biological endpoints.
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Affiliation(s)
- Emilio Xavier Esposito
- exeResearch, LLC, 32 University Drive, East Lansing, MI 48823, USA; The Chem21 Group, Inc., 1780 Wilson Drive, Lake Forest, IL 60045, USA.
| | - Anton J Hopfinger
- The Chem21 Group, Inc., 1780 Wilson Drive, Lake Forest, IL 60045, USA; College of Pharmacy MSC09 5360, 1 University of New Mexico, Albuquerque, NM, 87131, USA.
| | - Chi-Yu Shao
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No. 1 Sec. 4, Roosevelt Road, Taipei 106, Taiwan
| | - Bo-Han Su
- Department of Computer Science and Information Engineering, National Taiwan University, No. 1 Sec. 4, Roosevelt Road, Taipei 106, Taiwan
| | - Sing-Zuo Chen
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No. 1 Sec. 4, Roosevelt Road, Taipei 106, Taiwan
| | - Yufeng Jane Tseng
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No. 1 Sec. 4, Roosevelt Road, Taipei 106, Taiwan; Department of Computer Science and Information Engineering, National Taiwan University, No. 1 Sec. 4, Roosevelt Road, Taipei 106, Taiwan.
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Azamat J, Khataee A, Joo SW, Yin B. Removal of trihalomethanes from aqueous solution through armchair carbon nanotubes: A molecular dynamics study. J Mol Graph Model 2015; 57:70-5. [DOI: 10.1016/j.jmgm.2015.01.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 12/17/2014] [Accepted: 01/23/2015] [Indexed: 11/28/2022]
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Akhoon BA, Singh KP, Varshney M, Gupta SK, Shukla Y, Gupta SK. Understanding the mechanism of atovaquone drug resistance in Plasmodium falciparum cytochrome b mutation Y268S using computational methods. PLoS One 2014; 9:e110041. [PMID: 25334024 PMCID: PMC4198183 DOI: 10.1371/journal.pone.0110041] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 09/15/2014] [Indexed: 11/25/2022] Open
Abstract
The rapid appearance of resistant malarial parasites after introduction of atovaquone (ATQ) drug has prompted the search for new drugs as even single point mutations in the active site of Cytochrome b protein can rapidly render ATQ ineffective. The presence of Y268 mutations in the Cytochrome b (Cyt b) protein is previously suggested to be responsible for the ATQ resistance in Plasmodium falciparum (P. falciparum). In this study, we examined the resistance mechanism against ATQ in P. falciparum through computational methods. Here, we reported a reliable protein model of Cyt bc1 complex containing Cyt b and the Iron-Sulphur Protein (ISP) of P. falciparum using composite modeling method by combining threading, ab initio modeling and atomic-level structure refinement approaches. The molecular dynamics simulations suggest that Y268S mutation causes ATQ resistance by reducing hydrophobic interactions between Cyt bc1 protein complex and ATQ. Moreover, the important histidine contact of ATQ with the ISP chain is also lost due to Y268S mutation. We noticed the induced mutation alters the arrangement of active site residues in a fashion that enforces ATQ to find its new stable binding site far away from the wild-type binding pocket. The MM-PBSA calculations also shows that the binding affinity of ATQ with Cyt bc1 complex is enough to hold it at this new site that ultimately leads to the ATQ resistance.
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Affiliation(s)
- Bashir A. Akhoon
- Department of Bioinformatics, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India
| | - Krishna P. Singh
- Department of Bioinformatics, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India
| | - Megha Varshney
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Shishir K. Gupta
- Department of Bioinformatics, Biocenter, Am Hubland, University of Würzburg, Würzburg, Germany
| | - Yogeshwar Shukla
- Department of Proteomics, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Shailendra K. Gupta
- Department of Bioinformatics, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- * E-mail:
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Zhou R, Gao H. Cytotoxicity of graphene: recent advances and future perspective. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 6:452-74. [PMID: 24957946 DOI: 10.1002/wnan.1277] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 04/16/2014] [Accepted: 04/18/2014] [Indexed: 01/22/2023]
Abstract
Graphene, a unique two-dimensional single-atom-thin nanomaterial with exceptional structural, mechanical, and electronic properties, has spurred an enormous interest in many fields, including biomedical applications, which at the same time ignites a growing concern on its biosafety and potential cytotoxicity to human and animal cells. In this review, we present a summary of some very recent studies on this important subject with both experimental and theoretical approaches. The molecular interactions of graphene with proteins, DNAs, and cell membranes (both bacteria and mammalian cells) are discussed in detail. Severe distortions in structures and functions of these biomacromolecules by graphene are identified and characterized. For example, the graphene is shown to disrupt bacteria cell membranes by insertion/cutting as well as destructive extraction of lipid molecules directly. More interestingly, this cytotoxicity has been shown to have implications in de novo design of nanomedicine, such as graphene-based band-aid, a potential 'green' antibiotics due to its strong physical-based (instead of chemical-based) antibacterial capability. These studies have provided a better understanding of graphene nanotoxicity at both cellular and molecular levels, and also suggested therapeutic potential by using graphene's cytotoxicity against bacteria cells.
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Affiliation(s)
- Ruhong Zhou
- Computational Biology Center, IBM Thomas J. Watson Research Center, Yorktown Heights, NY, USA; Department of Chemistry, Columbia University, New York, NY, USA
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Rathinam NK, Saravanan C, Parimal P, Perumal V, Perumal M. Molecular interactions of graphene with HIV-Vpr, Nef and Gag proteins: A new approach for treating HIV infections. KOREAN J CHEM ENG 2014. [DOI: 10.1007/s11814-014-0049-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yanamala N, Kagan VE, Shvedova AA. Molecular modeling in structural nano-toxicology: interactions of nano-particles with nano-machinery of cells. Adv Drug Deliv Rev 2013; 65:2070-7. [PMID: 23726945 DOI: 10.1016/j.addr.2013.05.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 05/06/2013] [Accepted: 05/23/2013] [Indexed: 12/11/2022]
Abstract
Over the past two decades, nanotechnology has emerged as a key player in various disciplines of science and technology. Some of the most exciting applications are in the field of biomedicine - for theranostics (for combined diagnostic and therapeutic purposes) as well as for exploration of biological systems. A detailed understanding of the molecular interactions between nanoparticles and biological nano-machinery - macromolecules, membranes, and intracellular organelles - is crucial for obtaining adequate information on mechanisms of action of nanomaterials as well as a perspective on the long term effects of these materials and their possible toxicological outcomes. This review focuses on the use of structure-based computational molecular modeling as a tool to understand and to predict the interactions between nanomaterials and nano-biosystems. We review major approaches and provide examples of computational analysis of the structural principles behind such interactions. A rationale on how nanoparticles of different sizes, shape, structure and chemical properties can affect the organization and functions of nano-machinery of cells is also presented.
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Meher BR, Wang Y. Binding of single walled carbon nanotube to WT and mutant HIV-1 proteases: analysis of flap dynamics and binding mechanism. J Mol Graph Model 2012; 38:430-45. [PMID: 23142620 DOI: 10.1016/j.jmgm.2012.10.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 08/31/2012] [Accepted: 10/05/2012] [Indexed: 10/27/2022]
Abstract
Most of the currently treated HIV-1 protease (HIV-PR) inhibitors have been prone to suffer from the mutations associated drug resistance. Therefore, it is necessary to search for potent alternatives against the drug resistance. In the current study we have tested the single-walled carbon nanotube (SWCNT) as an inhibitor in wild type (WT) as well as in three primary mutants (I50V(PR), V82A(PR) and I84V(PR)) of the HIV-1-PR through docking the SWCNT in the active site region, and then performed all-atom MD simulations for the complexes. The conformational dynamics of HIV-PR with a 20 ns trajectory reveals that the SWCNT can effectively bind to the HIV-1-PR active site and regulate the flap dynamics such as maintaining the flap-flap closed. To gain an insight into the binding affinity, we also performed the MM-PBSA based binding free energy calculations for the four HIV-PR/SWCNT complexes. It was observed that, although the binding between the SWCNT and the HIV-PR decreases due to the mutations, the SWCNTs bind to the HIV-PRs 3-5 folds stronger than the most potent HIV-1-PR inhibitor, TMC114. Remarkably, the significant interactions with binding energy higher than 1kcal/mol focus on the flap and active regions, which favors closing flap-flap and deactivating the active residues of the HIV-PR. The flap dynamics and binding strength information for HIV-PR and SWCNTs can help design SWCNT-based HIV-1-PR inhibitors.
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Affiliation(s)
- Biswa Ranjan Meher
- Computational Chemistry Laboratory, Department of Natural Sciences, Albany State University, Albany, GA 31705, USA
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Mahajan SD, Aalinkeel R, Law WC, Reynolds JL, Nair BB, Sykes DE, Yong KT, Roy I, Prasad PN, Schwartz SA. Anti-HIV-1 nanotherapeutics: promises and challenges for the future. Int J Nanomedicine 2012; 7:5301-14. [PMID: 23055735 PMCID: PMC3468275 DOI: 10.2147/ijn.s25871] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The advent of highly active antiretroviral therapy (HAART) has significantly improved the prognosis for human immunodeficiency virus (HIV)-infected patients, however the adverse side effects associated with prolonged HAART therapy use continue. Although systemic viral load can be undetectable, the virus remains sequestered in anatomically privileged sites within the body. Nanotechnology-based delivery systems are being developed to target the virus within different tissue compartments and are being evaluated for their safety and efficacy. The current review outlines the various nanomaterials that are becoming increasingly used in biomedical applications by virtue of their robustness, safety, multimodality, and multifunctionality. Nanotechnology can revolutionize the field of HIV medicine by not only improving diagnosis, but also by improving delivery of antiretrovirals to targeted regions in the body and by significantly enhancing the efficacy of the currently available antiretroviral medications.
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Affiliation(s)
- Supriya D Mahajan
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, State University of New York at Buffalo, Buffalo Niagara Medical Campus, Buffalo, NY, USA.
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Jain KK. Advances in use of functionalized carbon nanotubes for drug design and discovery. Expert Opin Drug Discov 2012; 7:1029-37. [DOI: 10.1517/17460441.2012.722078] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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21
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Li D, Liu MS, Ji B, Hwang KC, Huang Y. Identifying the molecular mechanics and binding dynamics characteristics of potent inhibitors to HIV-1 protease. Chem Biol Drug Des 2012; 80:440-54. [PMID: 22621379 DOI: 10.1111/j.1747-0285.2012.01417.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Human immunodeficiency virus type 1 protease (HIV-1 PR) is one of the primary inhibition targets for chemotherapy of AIDS because of its critical role in the replication cycle of the HIV. In this work, a combinatory coarse-grained and atomistic simulation method was developed for dissecting molecular mechanisms and binding process of inhibitors to the active site of HIV-1 PR, in which 35 typical inhibitors were trialed. We found that the molecular size and stiffness of the inhibitors and the binding energy between the inhibitors and PR play important roles in regulating the binding process. Comparatively, the smaller and more flexible inhibitors have larger binding energy and higher binding rates; they even bind into PR without opening the flaps. In contrast, the larger and stiffer inhibitors have lower binding energy and lower binding rate, and their binding is subjected to the opening and gating of the PR flaps. Furthermore, the components of binding free energy were quantified and analyzed by their dependence on the molecular size, structures, and hydrogen bond networks of inhibitors. Our results also deduce significant dynamics descriptors for determining the quantitative structure and property relationship in potent drug ligands for HIV-1 PR inhibition.
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Affiliation(s)
- Dechang Li
- Biomechanics and Biomaterials Laboratory, Department of Applied Mechanics, Beijing Institute of Technology, China
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22
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Fullerene nanoparticles and their anti-oxidative effects: a comparison to other radioprotective agents. J Appl Biomed 2012. [DOI: 10.2478/v10136-012-0002-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Yang Z, Wang Z, Tian X, Xiu P, Zhou R. Amino acid analogues bind to carbon nanotube via π-π interactions: Comparison of molecular mechanical and quantum mechanical calculations. J Chem Phys 2012; 136:025103. [DOI: 10.1063/1.3675486] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Li D, Ji B, Hwang KC, Huang Y. Strength of hydrogen bond network takes crucial roles in the dissociation process of inhibitors from the HIV-1 protease binding pocket. PLoS One 2011; 6:e19268. [PMID: 21559397 PMCID: PMC3084818 DOI: 10.1371/journal.pone.0019268] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 03/25/2011] [Indexed: 11/18/2022] Open
Abstract
To understand the underlying mechanisms of significant differences in dissociation rate constant among different inhibitors for HIV-1 protease, we performed steered molecular dynamics (SMD) simulations to analyze the entire dissociation processes of inhibitors from the binding pocket of protease at atomistic details. We found that the strength of hydrogen bond network between inhibitor and the protease takes crucial roles in the dissociation process. We showed that the hydrogen bond network in the cyclic urea inhibitors AHA001/XK263 is less stable than that of the approved inhibitor ABT538 because of their large differences in the structures of the networks. In the cyclic urea inhibitor bound complex, the hydrogen bonds often distribute at the flap tips and the active site. In contrast, there are additional accessorial hydrogen bonds formed at the lateral sides of the flaps and the active site in the ABT538 bound complex, which take crucial roles in stabilizing the hydrogen bond network. In addition, the water molecule W301 also plays important roles in stabilizing the hydrogen bond network through its flexible movement by acting as a collision buffer and helping the rebinding of hydrogen bonds at the flap tips. Because of its high stability, the hydrogen bond network of ABT538 complex can work together with the hydrophobic clusters to resist the dissociation, resulting in much lower dissociation rate constant than those of cyclic urea inhibitor complexes. This study may provide useful guidelines for design of novel potent inhibitors with optimized interactions.
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Affiliation(s)
- Dechang Li
- School of Aerospace, Department of Engineering Mechanics, Tsinghua University, Beijing, China
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Arsawang U, Saengsawang O, Rungrotmongkol T, Sornmee P, Wittayanarakul K, Remsungnen T, Hannongbua S. How do carbon nanotubes serve as carriers for gemcitabine transport in a drug delivery system? J Mol Graph Model 2011; 29:591-6. [DOI: 10.1016/j.jmgm.2010.11.002] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 11/01/2010] [Accepted: 11/01/2010] [Indexed: 11/26/2022]
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