1
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Sorokina SA, Shifrina ZB. Dendrimers as Antiamyloid Agents. Pharmaceutics 2022; 14:760. [PMID: 35456594 PMCID: PMC9031116 DOI: 10.3390/pharmaceutics14040760] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 02/07/2023] Open
Abstract
Dendrimer-protein conjugates have significant prospects for biological applications. The complexation changes the biophysical behavior of both proteins and dendrimers. The dendrimers could influence the secondary structure of proteins, zeta-potential, distribution of charged regions on the surface, the protein-protein interactions, etc. These changes offer significant possibilities for the application of these features in nanotheranostics and biomedicine. Based on the dendrimer-protein interactions, several therapeutic applications of dendrimers have emerged. Thus, the formation of stable complexes retains the disordered proteins on the aggregation, which is especially important in neurodegenerative diseases. To clarify the origin of these properties and assess the efficiency of action, the mechanism of protein-dendrimer interaction and the nature and driving force of binding are considered in this review. The review outlines the antiamyloid activity of dendrimers and discusses the effect of dendrimer structures and external factors on their antiamyloid properties.
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Affiliation(s)
| | - Zinaida B. Shifrina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., 119991 Moscow, Russia;
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2
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Rajasekhar K, Samanta S, Bagoband V, Murugan NA, Govindaraju T. Antioxidant Berberine-Derivative Inhibits Multifaceted Amyloid Toxicity. iScience 2020; 23:101005. [PMID: 32272441 PMCID: PMC7138924 DOI: 10.1016/j.isci.2020.101005] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/22/2020] [Accepted: 03/18/2020] [Indexed: 12/21/2022] Open
Abstract
Multiple lines of evidence indicate that amyloid beta (Aβ) peptide is responsible for the pathological devastation caused in Alzheimer's disease (AD). Aβ aggregation species predominantly contribute to multifaceted toxicity observed in neuronal cells including generation of reactive oxygen species (ROS), mitochondrial dysfunction, interfering with synaptic signaling, and activation of premature apoptosis. Herein, we report a natural product berberine-derived (Ber-D) multifunctional inhibitor to ameliorate in cellulo multifaceted toxicity of AD. The structural attributes of polyphenolic Ber-D have contributed to its efficient Cu chelation and arresting the redox cycle to prevent the generation of ROS and rescue biomacromolecules from oxidative damage. Ber-D inhibits metal-dependent and -independent Aβ aggregation, which is supported by in silico studies. Ber-D treatment averts mitochondrial dysfunction and corresponding neuronal toxicity contributing to premature apoptosis. These key multifunctional attributes make Ber-D a potential therapeutic candidate to ameliorate multifaceted Aβ toxicity in AD.
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Affiliation(s)
- Kolla Rajasekhar
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India
| | - Sourav Samanta
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India
| | - Vardhaman Bagoband
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India
| | - N Arul Murugan
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India.
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3
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Mandal S, Debnath K, Jana NR, Jana NR. Trehalose-Conjugated, Catechin-Loaded Polylactide Nanoparticles for Improved Neuroprotection against Intracellular Polyglutamine Aggregates. Biomacromolecules 2020; 21:1578-1586. [DOI: 10.1021/acs.biomac.0c00143] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Suman Mandal
- Centre for Advanced Materials and School of Material Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Koushik Debnath
- Centre for Advanced Materials and School of Material Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Nihar R. Jana
- School of Bioscience, Indian Institute of Technology, Kharagpur 721302, India
| | - Nikhil R. Jana
- Centre for Advanced Materials and School of Material Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
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4
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Sahu DK, Singha D, Sahu K. Sensing of iron(III)-biomolecules by surfactant-free fluorescent copper nanoclusters. SENSING AND BIO-SENSING RESEARCH 2019. [DOI: 10.1016/j.sbsr.2018.100250] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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5
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Roy Chowdhury S, Mondal S, Muthuraj B, Balaji SN, Trivedi V, Krishnan Iyer P. Remarkably Efficient Blood-Brain Barrier Crossing Polyfluorene-Chitosan Nanoparticle Selectively Tweaks Amyloid Oligomer in Cerebrospinal Fluid and Aβ1-40. ACS OMEGA 2018; 3:8059-8066. [PMID: 30087934 PMCID: PMC6072248 DOI: 10.1021/acsomega.8b00764] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 07/05/2018] [Indexed: 06/08/2023]
Abstract
Amyloid oligomers have emerged as a key neurotoxin in Alzheimer's dementia. Amyloid aggregation inhibitors and modulators have therefore offered potential applications in therapeutics and diagnosis. However, crossing the blood-brain barrier (BBB) and finding the toxic aggregates among aggregates of different sizes and shapes remain a challenge. The ability of identifying early aggregates can provide a new approach to find inhibitors of the initial nucleation events correlating presenile dementia. In this study, we have prepared polyfluorene nanoparticles using chitosan as an additive, which enables it to cross BBB efficiently and employed as a highly efficient amyloid oligomer modulator. The polymer conjugate, polyfluorene-chitosan (PC), shows no toxicity in MTT assay and precludes self-aggregation of Aβ1-40 and human cerebrospinal fluid oligomers to final fibril formation. This modulation strategy is supported by thioflavin T assay, circular dichroism studies, atomic force microscope images, and Fourier transform infrared analysis. The polymer-protein interface exhibits the presence of co-aggregates and responded with a stable optical response. The simple synthesis to get desired sizes and shapes with necessary photophysical behavior, biocompatibility, and most prominently BBB permeability makes this polymer conjugate very unique and highly attractive for modulation of amyloid oligomers selectively as well as for developing next generation nanotheranostic materials toward presenile dementia.
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Affiliation(s)
- Sayan Roy Chowdhury
- Department
of Chemistry, Department of Biosciences and Bioengineering, and Centre for Nanotechnology, Indian Institute of Technology Guwahati, 781039 Assam, India
| | - Subrata Mondal
- Department
of Chemistry, Department of Biosciences and Bioengineering, and Centre for Nanotechnology, Indian Institute of Technology Guwahati, 781039 Assam, India
| | - Balakrishnan Muthuraj
- Department
of Chemistry, Department of Biosciences and Bioengineering, and Centre for Nanotechnology, Indian Institute of Technology Guwahati, 781039 Assam, India
| | - S. N. Balaji
- Department
of Chemistry, Department of Biosciences and Bioengineering, and Centre for Nanotechnology, Indian Institute of Technology Guwahati, 781039 Assam, India
| | - Vishal Trivedi
- Department
of Chemistry, Department of Biosciences and Bioengineering, and Centre for Nanotechnology, Indian Institute of Technology Guwahati, 781039 Assam, India
| | - Parameswar Krishnan Iyer
- Department
of Chemistry, Department of Biosciences and Bioengineering, and Centre for Nanotechnology, Indian Institute of Technology Guwahati, 781039 Assam, India
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6
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Chowdhury SR, Agarwal M, Meher N, Muthuraj B, Iyer PK. Modulation of Amyloid Aggregates into Nontoxic Coaggregates by Hydroxyquinoline Appended Polyfluorene. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13309-13319. [PMID: 27152771 DOI: 10.1021/acsami.6b03668] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Inhibitory modulation toward de novo protein aggregation is likely to be a vital and promising therapeutic strategy for understanding the molecular etiology of amyloid related diseases such as Alzheimer's disease (AD). The building up of toxic oligomeric and fibrillar amyloid aggregates in the brain plays host to a downstream of events, causing damage to axons, dendrites, synapses, signaling, transmission, and finally cell death. Herein, we introduce a novel conjugated polymer (CP), hydroxyquinoline appended polyfluorene (PF-HQ), which has a typical "amyloid like" surface motif and exhibits inhibitory modulation effect on amyloid β (Aβ) aggregation. We delineate inhibitory effects of PF-HQ based on Thioflavin T (ThT) fluorescence, atomic force microscopy (AFM), circular dichroism (CD), and Fourier transform infrared (FTIR) studies. The amyloid-like PF-HQ forms nano coaggregates by templating with toxic amyloid intermediates and displays improved inhibitory impacts toward Aβ fibrillation and diminishes amyloid cytotoxicity. We have developed a CP based modulation strategy for the first time, which demonstrates beneficiary amyloid-like surface motif to interact efficiently with the protein, the pendant side groups to trap the toxic amyloid intermediates as well as optical signal to acquire the mechanistic insight.
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Affiliation(s)
- Sayan Roy Chowdhury
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Mahesh Agarwal
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Niranjan Meher
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Balakrishnan Muthuraj
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, ‡Department of Bioscience and Bioengineering, and §Center for Nanotechnology, Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
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Meher N, Chowdhury SR, Iyer PK. Aggregation induced emission enhancement and growth of naphthalimide nanoribbons via J-aggregation: insight into disaggregation induced unfolding and detection of ferritin at the nanomolar level. J Mater Chem B 2016; 4:6023-6031. [DOI: 10.1039/c6tb01746k] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A core substituted naphthalimide AIEEgen displays unusual nanoribbon growth in aqueous media with ultra-sensitivity towards non-heme protein ferritin at physiological conditions.
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Affiliation(s)
- Niranjan Meher
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Sayan Roy Chowdhury
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Parameswar Krishnan Iyer
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
- Center for Nanotechnology
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8
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Muthuraj B, Layek S, Balaji SN, Trivedi V, Iyer PK. Multiple function fluorescein probe performs metal chelation, disaggregation, and modulation of aggregated Aβ and Aβ-Cu complex. ACS Chem Neurosci 2015; 6:1880-91. [PMID: 26332658 DOI: 10.1021/acschemneuro.5b00205] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
An exceptional probe comprising indole-3-carboxaldehyde fluorescein hydrazone (FI) performs multiple tasks, namely, disaggregating amyloid β (Aβ) aggregates in different biomarker environments such as cerebrospinal fluid (CSF), Aβ1-40 fibrils, β-amyloid lysozyme aggregates (LA), and U87 MG human astrocyte cells. Additionally, the probe FI binds with Cu(2+) ions selectively, disrupts the Aβ aggregates that vary from few nanometers to micrometers, and prevents their reaggregation, thereby performing disaggregation and modulation of amyloid-β in the presence as well as absence of Cu(2+) ion. The excellent selectivity of probe FI for Cu(2+) was effectively utilized to modulate the assembly of metal-induced Aβ aggregates by metal chelation with the "turn-on" fluorescence via spirolactam ring opening of FI as well as the metal-free Aβ fibrils by noncovalent interactions. These results confirm that FI has exceptional ability to perform multifaceted tasks such as metal chelation in intracellular conditions using Aβ lysozyme aggregates in cellular environments by the disruption of β-sheet rich Aβ fibrils into disaggregated forms. Subsequently, it was confirmed that FI had the ability to cross the blood-brain barrier and it also modulated the metal induced Aβ fibrils in cellular environments by "turn-on" fluorescence, which are the most vital properties of a probe or a therapeutic agent. Furthermore, the morphology changes were examined by atomic force microscopy (AFM), polarizable optical microscopy (POM), fluorescence microscopy, and dynamic light scattering (DLS) studies. These results provide very valuable clues on the Aβ (CSF Aβ fibrils, Aβ1-40 fibrils, β-amyloid lysozyme aggregates) disaggregation behavior via in vitro studies, which constitute the first insights into intracellular disaggregation of Aβ by "turn-on" method thereby influencing amyloidogenesis.
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Affiliation(s)
- B. Muthuraj
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - Sourav Layek
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - S. N. Balaji
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - Vishal Trivedi
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, and ‡Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati-781039, Assam, India
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9
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Sorokina SA, Stroylova YY, Shifrina ZB, Muronetz VI. Disruption of Amyloid Prion Protein Aggregates by Cationic Pyridylphenylene Dendrimers. Macromol Biosci 2015; 16:266-75. [DOI: 10.1002/mabi.201500268] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/16/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Svetlana A. Sorokina
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Moscow Vavilova str., 28 119991
| | - Yulia Yu. Stroylova
- Belozersky Institute of Physico-Chemical Biology; Lomonosov Moscow State University; Moscow Leninskye gory, 1/40, 119992 Russia
| | - Zinaida B. Shifrina
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Moscow Vavilova str., 28 119991
| | - Vladimir I. Muronetz
- Belozersky Institute of Physico-Chemical Biology; Lomonosov Moscow State University; Moscow Leninskye gory, 1/40, 119992 Russia
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10
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Muthuraj B, Chowdhury SR, Iyer PK. Modulation of Amyloid-β Fibrils into Mature Microrod-Shaped Structure by Histidine Functionalized Water-Soluble Perylene Diimide. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21226-21234. [PMID: 26340532 DOI: 10.1021/acsami.5b07260] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Alzheimer's disease (AD) is associated with different types of amyloid peptide aggregates including senile plaques, fibrils, protofibrils, and oligomers. Due to these difficulties, a powerful strategy is needed for the disaggregation of amyloid aggregates by modulating their self-aggregation behavior. Herein, we report a unique approach toward transforming the aggregated amyloidogenic peptides using an amino acid functionalized perylene diimide as a molecular modulator, which is a different nondestructive approach as compared to inhibiting the aggregation of peptides. The histidine functionalized perylenediimide (PDI-HIS) molecule could coassemble with amyloid β (Aβ) peptides via hydrogen bonding that leads to the enhancement in the π-π interactions between Aβ and PDI-HIS moieties. The Thioflavin T (ThT) assay and various spectroscopic and microscopic techniques establish that the PDI-HIS molecules accelerate the Aβ1-40 and the amyloid aggregates in CSF into micro size coassembled structures. These results give rise to a new and unique complementary approach for modulating the biological effects of the aggregates in amyloidogenic peptides.
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Affiliation(s)
- Balakrishnan Muthuraj
- Department of Chemistry, Indian Institute of Technology , Guwahati 781039, Assam, India
| | - Sayan Roy Chowdhury
- Department of Chemistry, Indian Institute of Technology , Guwahati 781039, Assam, India
| | - Parameswar K Iyer
- Department of Chemistry, Indian Institute of Technology , Guwahati 781039, Assam, India
- Center for Nanotechnology, Indian Institute of Technology , Guwahati 781039, Assam, India
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11
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Liu X, Shi L, Zhang Z, Fan Q, Huang Y, Su S, Fan C, Wang L, Huang W. Monodispersed nanoparticles of conjugated polyelectrolyte brush with high charge density for rapid, specific and label-free detection of tumor marker. Analyst 2015; 140:1842-6. [DOI: 10.1039/c4an02384f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rapid and label-free detection of human α-fetoprotein (AFP) based on selective superquenching of monodispersed nanoparticles of conjugated polyelectrolyte.
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Affiliation(s)
- Xingfen Liu
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
| | - Lin Shi
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
| | - Zhiyong Zhang
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
| | - Quli Fan
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
| | - Yanqin Huang
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
| | - Shao Su
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
| | - Chunhai Fan
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai 201800
- China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
| | - Wei Huang
- Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing University of Posts and Telecommunications
- Nanjing 210023
- China
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