1
|
Ashraf SS, Hosseinpour Sarmadi V, Larijani G, Naderi Garahgheshlagh S, Ramezani S, Moghadamifar S, Mohebi SL, Brouki Milan P, Haramshahi SMA, Ahmadirad N, Amini N. Regenerative medicine improve neurodegenerative diseases. Cell Tissue Bank 2023; 24:639-650. [PMID: 36527565 DOI: 10.1007/s10561-022-10062-0] [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: 04/30/2022] [Accepted: 12/04/2022] [Indexed: 12/23/2022]
Abstract
Regenerative medicine is a subdivision of medicine that improves methods to regrow, repair or replace unhealthy cells and tissues to return to normal function. Cell therapy, gene therapy, nanomedicine as choices used to cure neurodegenerative disease. Recently, studies related to the treatment of neurodegenerative disorders have been focused on stem cell therapy and Nano-drugs beyond other than regenerative medicine. Hence, by data from experimental models and clinical trials, we review the impact of stem cell therapy, gene therapy, and nanomedicine on the treatment of Alzheimer's disease (AD), Parkinson's disease (PD), and Amyotrophic lateral sclerosis (ALS). Indeed, improved knowledge and continued research on gene therapy and nanomedicine in treating Alzheimer's disease, Parkinson's disease, and Amyotrophic lateral sclerosis lead to advancements in effective and practical treatments for neurodegenerative diseases.
Collapse
Affiliation(s)
- Seyedeh Sara Ashraf
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
- Institutes of Regenerative Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Vahid Hosseinpour Sarmadi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
- Institutes of Regenerative Medicine, Iran University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ghazaleh Larijani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Soheila Naderi Garahgheshlagh
- Burn Research Center, Iran University of Medical Sciences, Tehran, Iran
- Department of Plastic and Reconstructive surgery, Hazrat Fatemeh Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Sara Ramezani
- Neuroscience Research Center, Guilan Road Trauma Research Center, Guilan University of Medical Sciences, Rasht, Guilan, Iran
- Guilan Road Trauma Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Soraya Moghadamifar
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Seyedeh Lena Mohebi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
- Institutes of Regenerative Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Peiman Brouki Milan
- Institutes of Regenerative Medicine, Iran University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Amin Haramshahi
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Department of Plastic and Reconstructive surgery, Hazrat Fatemeh Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Nooshin Ahmadirad
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
| | - Naser Amini
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
- Institutes of Regenerative Medicine, Iran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
2
|
Zhang Z, Yuan Q, Li M, Bao B, Tang Y. A Ratiometric Fluorescent Conjugated Oligomer for Amyloid β Recognition, Aggregation Inhibition, and Detoxification. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2104581. [PMID: 34708516 DOI: 10.1002/smll.202104581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/08/2021] [Indexed: 06/13/2023]
Abstract
The sensitive recognition and effective inhibition of toxic amyloid β protein (Aβ) aggregates play a critical role in early diagnosis and treatment of neurodegenerative diseases. In this work, a new conjugated oligo(fluorene-co-phenylene) (OFP) modified with 1,8-naphthalimide (NA) derivative OFP-NA-NO2 is designed and synthesized as a ratiometric fluorescence probe for sensing Aβ, inhibiting the assembly of Aβ, and detoxicating the cytotoxicity of Aβ aggregates. In the presence of Aβ, the active ester group on the side chain of OFP-NA-NO2 can covalently react with the amino group on Aβ, effectively inhibiting the formation of Aβ aggregates and degrading the preformed fibrils. In this case, the fluorescence intensity ratio of NA to OFP (INA /IOFP ) increases greatly. The detection limit is calculated to be 89.9 nM, presenting the most sensitive ratiometric recognition of Aβ. Interestingly, OFP-NA-NO2 can dramatically recover the cell viability of PC-12 and restore the Aβ-clearing ability of microglia. Therefore, this ratiometric probe exhibits the targeted recognition of Aβ, effective inhibition of Aβ aggregates, and detox effect, which is potential for early diagnosis and treatment of neurodegenerative diseases.
Collapse
Affiliation(s)
- Ziqi Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Qiong Yuan
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Meiqi Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Benkai Bao
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Yanli Tang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| |
Collapse
|
3
|
Blended polar/nonpolar peptide conjugate interferes with human insulin amyloid-mediated cytotoxicity. Bioorg Chem 2021; 111:104899. [PMID: 33882365 DOI: 10.1016/j.bioorg.2021.104899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 12/25/2022]
Abstract
Insulin, a peptide hormone and a key regulator of blood glucose level, is routinely administered to type-I diabetic patients to achieve the required glycemic control. Insulin aggregation and ensuing amyloidosis has been observed at repeated insulin injection sites and in injectable formulations. The latter occurs due to insulin agglomeration during shipping and storage. Such insulin amyloid leads to enhanced immunogenicity and allow potential attachment to cell membranes leading to cell permeability and apoptosis. Small molecule inhibitors provide useful interruption of this process and inhibit protein misfolding as well as amyloid formation. In this context, we report the propensity of a palmitoylated peptide conjugate to inhibit insulin aggregation and amyloid-mediated cytotoxicity, via designed interference with polypeptide interfacial interactions.
Collapse
|
4
|
Mondal S, Vashi Y, Ghosh P, Roy D, Barthakur M, Kumar S, Iyer PK. Amyloid Targeting "Artificial Chaperone" Impairs Oligomer Mediated Neuronal Damage and Mitochondrial Dysfunction Associated with Alzheimer's Disease. ACS Chem Neurosci 2020; 11:3277-3287. [PMID: 32941009 DOI: 10.1021/acschemneuro.0c00387] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Alzheimer's disease (AD) is an irreversible memory disorder associated with multiple neuropathological events including amyloid aggregation that triggers oxidative stress and mitochondrial dysfunction in humans. Herein, a new artificial chaperone, benzimidazole functionalized polyfluorene (PFBZ) is reported to efficiently sequester toxic amyloid beta (Aβ) by binding at their 'amyloidogenic domain' (Aβ16-21) with unprecedented selectivity and prevent amyloid-mediated neuronal damage in a wild-type (WT) mouse model. An accurate dose of PFBZ chaperone successfully attenuated an amyloid triggered internal hemorrhage and pyknosis in the cerebral cortex of WT mice. The structural advantage of the polymer results in an efficient Cu(II) chelation arresting a redox cycle to prevent reactive oxygen species (ROS) generation and protect mitochondria from ROS mediated damage. This was further evidenced by caspase activation and mitochondrial membrane potential (MMP) biomarkers and was complemented by brain histology and electron microscopy data which revealed that the PFBZ chaperone provided a protective coating over the amyloid surface and resists from interacting with cell membrane and prevents inducing toxicity. This conjugated polymer artificial chaperone-based nanodrug showed exceptional properties such as its multipotent and highly biocompatible nature, the first of its kind with specific amyloid (Aβ16-21) targeting behavior, bioimaging, and BBB permeability with a potential to suppress amyloid triggered neurotoxicity implicated in numerous human disorders through a rare synergistic mechanism.
Collapse
Affiliation(s)
- Subrata Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Yoya Vashi
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Priyam Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Dhrubajyoti Roy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Manash Barthakur
- Department of Zoology, Pub Kamrup College, Baihata Chariali, Kamrup 781381, Assam, India
| | - Sachin Kumar
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Parameswar Krishnan Iyer
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
- Center for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| |
Collapse
|
5
|
Datta LP, Samanta S, Govindaraju T. Polyampholyte-Based Synthetic Chaperone Modulate Amyloid Aggregation and Lithium Delivery. ACS Chem Neurosci 2020; 11:2812-2826. [PMID: 32816457 DOI: 10.1021/acschemneuro.0c00369] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Protein misfolding and aggregation is the pathological hallmark of Alzheimer's disease (AD). The etiopathogenesis of AD involves the accumulation of amyloid-β (Aβ) plaques in the brain, which disrupt the neuronal network and communication, causing neuronal death and severe cognitive impairment. Modulation of Aβ aggregation by exogenous therapeutic agents is considered an effective strategy to treat AD. Frequent failure of drug candidates in various phases of clinical trials reiterates the need for alternative therapeutic strategies for AD treatment. Polyampholytes with cationic and anionic segments are considered as artificial protein mimics capable of modulating the protein misfolding and aggregation. We report a diblock copolymer of tryptophan-functionalized methacrylic acid (PTMA) polyampholyte synthesized through reversible addition-fragmentation chain transfer (RAFT) polymerization. Investigation revealed that PTMA acts as a synthetic chaperone to protect the native structure of the lysozyme under heat-induced aggregation conditions. PTMA effectively modulates Aβ aggregation and rescues neuronal cells. Lithium has been shown to exhibit therapeutic efficacy in chronic neurological diseases including AD. PTMA sequesters and releases lithium ions in response to neuropathological pH stimuli, making it a promising candidate for lithium transport and delivery. The detailed studies demonstrate PTMA as aggregation modulator and lithium carrier with implications for combinational therapy to treat AD.
Collapse
Affiliation(s)
- Lakshmi Priya Datta
- Bioorganic Chemistry Laboratory, New Chemistry Unit and The School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P. O., Bengaluru 560064, Karnataka, India
| | - Sourav Samanta
- Bioorganic Chemistry Laboratory, New Chemistry Unit and The School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P. O., Bengaluru 560064, Karnataka, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit and The School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P. O., Bengaluru 560064, Karnataka, India
| |
Collapse
|
6
|
Liu H, Qian C, Yang T, Wang Y, Luo J, Zhang C, Wang X, Wang X, Guo Z. Small molecule-mediated co-assembly of amyloid-β oligomers reduces neurotoxicity through promoting non-fibrillar aggregation. Chem Sci 2020; 11:7158-7169. [PMID: 34123000 PMCID: PMC8159368 DOI: 10.1039/d0sc00392a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Amyloid-β (Aβ) oligomers, particularly low molecular weight (LMW) oligomers, rather than fibrils, contribute very significantly to the onset and progression of Alzheimer's Disease (AD). However, due to the inherent heterogeneity and metastability of oligomers, most of the conventional anti-oligomer therapies have indirectly modulated oligomers' toxicity through manipulating Aβ self-assembly to reduce oligomer levels, which are prone to suffering from the risk of regenerating toxic oligomers from the products of modulation. To circumvent this disadvantage, we demonstrate, for the first time, rational design of rigid pincer-like scaffold-based small molecules with blood–brain barrier permeability that specifically co-assemble with LMW Aβ oligomers through directly binding to the exposed hydrophobic regions of oligomers to form non-fibrillar, degradable, non-toxic co-aggregates. As a proof of concept, treatment with a europium complex (EC) in such a structural mode can rescue Aβ-mediated dysfunction in C. elegans models of AD in vivo. This small molecule-mediated oligomer co-assembly strategy offers an efficient approach for AD treatment. A rational design of pincer-like scaffold-based small molecule with blood-brain barrier permeability that can specifically co-assemble with low molecular weight Aβ oligomers to form non-fibrillar, degradable, non-toxic co-aggregates.![]()
Collapse
Affiliation(s)
- Hao Liu
- College of Chemistry and Molecular Engineering, Nanjing Tech University Nanjing 211816 P. R. China
| | - Chengyuan Qian
- College of Chemistry and Molecular Engineering, Nanjing Tech University Nanjing 211816 P. R. China
| | - Tao Yang
- Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University Nanjing 210093 P. R. China
| | - Yanqing Wang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University Yancheng 224007 P. R. China
| | - Jian Luo
- College of Chemistry and Molecular Engineering, Nanjing Tech University Nanjing 211816 P. R. China
| | - Changli Zhang
- School of Environmental Science, Nanjing Xiaozhuang College Nanjing 211171 P. R. China
| | - Xiaohui Wang
- College of Chemistry and Molecular Engineering, Nanjing Tech University Nanjing 211816 P. R. China .,State Key Laboratory of Coordination Chemistry, Nanjing University Nanjing 210093 P. R. China
| | - Xiaoyong Wang
- Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University Nanjing 210093 P. R. China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, Nanjing University Nanjing 210093 P. R. China
| |
Collapse
|
7
|
Zhang W, Gao G, Ma Z, Luo Z, He M, Sun T. Au 23(CR) 14 nanocluster restores fibril Aβ's unfolded state with abolished cytotoxicity and dissolves endogenous Aβ plaques. Natl Sci Rev 2019; 7:763-774. [PMID: 34692095 PMCID: PMC8289031 DOI: 10.1093/nsr/nwz215] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 12/14/2022] Open
Abstract
The misfolding of amyloid-β (Aβ) peptides from the natural unfolded state to β-sheet structure is a critical step, leading to abnormal fibrillation and formation of endogenous Aβ plaques in Alzheimer's disease (AD). Previous studies have reported inhibition of Aβ fibrillation or disassembly of exogenous Aβ fibrils in vitro. However, soluble Aβ oligomers have been reported with increased cytotoxicity; this might partly explain why current clinical trials targeting disassembly of Aβ fibrils by anti-Aβ antibodies have failed so far. Here we show that Au23(CR)14 (a new Au nanocluster modified by Cys-Arg (CR) dipeptide) is able to completely dissolve exogenous mature Aβ fibrils into monomers and restore the natural unfolded state of Aβ peptides from misfolded β-sheets. Furthermore, the cytotoxicity of Aβ40 fibrils when dissolved by Au23(CR)14 is fully abolished. More importantly, Au23(CR)14 is able to completely dissolve endogenous Aβ plaques in brain slices from transgenic AD model mice. In addition, Au23(CR)14 has good biocompatibility and infiltration ability across the blood-brain barrier. Taken together, this work presents a promising therapeutics candidate for AD treatment, and manifests the potential of nanotechnological approaches in the development of nanomedicines.
Collapse
Affiliation(s)
- Wenkang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Guanbin Gao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Zhongjie Ma
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Zhuoying Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Meng He
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.,School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| |
Collapse
|
8
|
Mondal S, Kumar V, Roy Chowdhury S, Shah M, Gaur A, Kumar S, Iyer PK. Template-Mediated Detoxification of Low-Molecular-Weight Amyloid Oligomers and Regulation of Their Nucleation Pathway. ACS APPLIED BIO MATERIALS 2019; 2:5306-5312. [DOI: 10.1021/acsabm.9b00514] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
9
|
Sun H, Lv F, Liu L, Wang S. Reactive Conjugated Polymers for the Modulation of Islet Amyloid Polypeptide Assembly. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22973-22978. [PMID: 31252497 DOI: 10.1021/acsami.9b05247] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Misfolding and abnormal assembly of proteins cause many intractable diseases. The modulation of the assembly process of these proteins could contribute to understanding and controlling amyloid protein aggregation. Previous works focused mainly on the inhibition of the assembly process. To broaden the interaction modality of modulators with proteins for developing new modulators, in this work, we designed and synthesized two reactive poly ( p-phenylene vinylene) polymers, respectively, functionalized with N-hydroxysuccinimide ester (PPV-NHS) and pentafluorophenol ester (PPV-PFP), which exhibited the prevention or co-assembly effect on the aggregation process of islet amyloid polypeptide (IAPP). Cell assays demonstrated that both of the two polymers could effectively eliminate the cytotoxicity of IAPP. Moreover, PPV-NHS also could irreversibly disrupt preformed IAPP fibrils. We envision that PPV-NHS and PPV-PFP might offer a new design method for the modulation of protein assembly.
Collapse
Affiliation(s)
- Han Sun
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| |
Collapse
|
10
|
Mondal S, Roy Chowdhury S, Shah M, Kumar V, Kumar S, Iyer PK. Nanoparticle Assisted Regulation of Nucleation Pathway of Amyloid Tetramer and Inhibition of Their Fibrillation Kinetics. ACS APPLIED BIO MATERIALS 2019; 2:2137-2142. [DOI: 10.1021/acsabm.9b00128] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Roy Chowdhury S, Mondal S, Iyer PK. Blocking Oligomeric Insulin Amyloid Fibrillation via Perylenebisimides Containing Dipeptide Tentacles. ACS Biomater Sci Eng 2018; 4:4076-4083. [DOI: 10.1021/acsbiomaterials.8b00927] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
12
|
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.
Collapse
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
| |
Collapse
|
13
|
Pilkington E, Lai M, Ge X, Stanley WJ, Wang B, Wang M, Kakinen A, Sani MA, Whittaker MR, Gurzov EN, Ding F, Quinn JF, Davis TP, Ke PC. Star Polymers Reduce Islet Amyloid Polypeptide Toxicity via Accelerated Amyloid Aggregation. Biomacromolecules 2017; 18:4249-4260. [PMID: 29035554 PMCID: PMC5729549 DOI: 10.1021/acs.biomac.7b01301] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/13/2017] [Indexed: 01/20/2023]
Abstract
Protein aggregation into amyloid fibrils is a ubiquitous phenomenon across the spectrum of neurodegenerative disorders and type 2 diabetes. A common strategy against amyloidogenesis is to minimize the populations of toxic oligomers and protofibrils by inhibiting protein aggregation with small molecules or nanoparticles. However, melanin synthesis in nature is realized by accelerated protein fibrillation to circumvent accumulation of toxic intermediates. Accordingly, we designed and demonstrated the use of star-shaped poly(2-hydroxyethyl acrylate) (PHEA) nanostructures for promoting aggregation while ameliorating the toxicity of human islet amyloid polypeptide (IAPP), the peptide involved in glycemic control and the pathology of type 2 diabetes. The binding of PHEA elevated the β-sheet content in IAPP aggregates while rendering a new morphology of "stelliform" amyloids originating from the polymers. Atomistic molecular dynamics simulations revealed that the PHEA arms served as rodlike scaffolds for IAPP binding and subsequently accelerated IAPP aggregation by increased local peptide concentration. The tertiary structure of the star nanoparticles was found to be essential for driving the specific interactions required to impel the accelerated IAPP aggregation. This study sheds new light on the structure-toxicity relationship of IAPP and points to the potential of exploiting star polymers as a new class of therapeutic agents against amyloidogenesis.
Collapse
Affiliation(s)
- Emily
H. Pilkington
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - May Lai
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Xinwei Ge
- Department
of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, United States
| | - William J. Stanley
- St
Vincent’s Institute of Medical Research, 9 Princes Street, Fitzroy, Victoria 3065, Australia
- Department
of Medicine, St. Vincent’s Hospital, The University of Melbourne, Melbourne, Australia
| | - Bo Wang
- Department
of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, United States
| | - Miaoyi Wang
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Aleksandr Kakinen
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Marc-Antonie Sani
- School of
Chemistry, Bio21 Institute, The University
of Melbourne, 30 Flemington
Rd, Parkville, Victoria 3010, Australia
| | - Michael R. Whittaker
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Esteban N. Gurzov
- St
Vincent’s Institute of Medical Research, 9 Princes Street, Fitzroy, Victoria 3065, Australia
- Department
of Medicine, St. Vincent’s Hospital, The University of Melbourne, Melbourne, Australia
| | - Feng Ding
- Department
of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, United States
| | - John F. Quinn
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Thomas P. Davis
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- Department
of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, United Kingdom
| | - Pu Chun Ke
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology,
Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| |
Collapse
|
14
|
Chowdhury SR, Mukherjee S, Das S, Patra CR, Iyer PK. Multifunctional (3-in-1) cancer theranostics applications of hydroxyquinoline-appended polyfluorene nanoparticles. Chem Sci 2017; 8:7566-7575. [PMID: 29568419 PMCID: PMC5848823 DOI: 10.1039/c7sc03321d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 08/26/2017] [Indexed: 11/22/2022] Open
Abstract
The accumulation of fluorescent hydroxyquinoline-affixed polyfluorene (PF-HQ) nanoparticles and their utility for multi-color bio-imaging and drug delivery for cancer treatment are reported. The formation of nanoparticles (PF-HQ) containing hydrophobic pockets via three-dimensional growth of a polymeric backbone in a higher water fraction (THF : H2O = 1 : 9) was observed. The nanoparticles showed incredible dual-state optical and fluorescence properties, which were further explored in multi-color cell imaging in both cancer and normal cells. The cell viability assay in various normal cells confirmed the biocompatible nature of PF-HQ, which was further supported by an ex vivo (chick chorioallantoic membrane assay) model. This encouraged us to fabricate PF-HQ-based new drug delivery systems (DDS: PF-HQ-DOX) upon conjugation with the FDA-approved anti-cancer drug doxorubicin (DOX) by filling the hydrophobic pockets of the polymer nanoparticles. The enhanced anti-cancer activity of the DDS (PF-HQ-DOX) compared with that of free DOX was observed in mouse melanoma cancer cells (B16F10) and a subcutaneous mouse (C57BL6/J) melanoma tumor model upon administration of PF-HQ-DOX. Ex vivo biodistribution studies using a fluorescence quantification method demonstrated the enhanced accumulation of DOX in tumor tissues in the PF-HQ-DOX-treated group compared to that of the free drug, signifying the drug delivery efficacy of the delivery system by a passive targeting manner. Based on the above biological data (in vitro and in the pre-clinical model), these robust and versatile fluorescent hydroxyquinoline-affixed polyfluorene (PF-HQ) nanoparticles could be effectively utilized for multifunctional biomedical applications (as they are biocompatible and can be used for bio-imaging and as a drug delivery vehicle).
Collapse
Affiliation(s)
- Sayan Roy Chowdhury
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India .
| | - Sudip Mukherjee
- Chemical Biology , CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka , Hyderabad-500007 , Telangana State , India .
- Academy of Scientific and Innovative Research (AcSIR) , Training and Development Complex , CSIR Campus, CSIR Road, Taramani , Chennai-600 113 , India
| | - Sourav Das
- Chemical Biology , CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka , Hyderabad-500007 , Telangana State , India .
- Academy of Scientific and Innovative Research (AcSIR) , Training and Development Complex , CSIR Campus, CSIR Road, Taramani , Chennai-600 113 , India
| | - Chitta Ranjan Patra
- Chemical Biology , CSIR-Indian Institute of Chemical Technology , Uppal Road, Tarnaka , Hyderabad-500007 , Telangana State , India .
- Academy of Scientific and Innovative Research (AcSIR) , Training and Development Complex , CSIR Campus, CSIR Road, Taramani , Chennai-600 113 , India
| | - Parameswar Krishnan Iyer
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India .
- Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati-781039 , Assam , India
| |
Collapse
|
15
|
Meher N, Iyer PK. Pendant chain engineering to fine-tune the nanomorphologies and solid state luminescence of naphthalimide AIEEgens: application to phenolic nitro-explosive detection in water. NANOSCALE 2017; 9:7674-7685. [PMID: 28541353 DOI: 10.1039/c7nr02174g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Strategically, a series of five angular "V" shaped naphthalimide AIEEgens with varying pendant chains (butyl, hexyl, octyl, cyclohexyl and methylcyclohexyl) have been synthesized to fine-tune their nanomorphological and photophysical properties. With similar aromatic cores and electronic states, unexpected tuning of the condensed state emission colors and nanomorphologies (reproducible on any kind of surface) of naphthalimides has been achieved for the first time simply by varying their side chains. Conclusive analysis by various spectroscopic techniques (SC-XRD, powder-XRD, DLS, FESEM) and DFT computational studies confirmed the full control of the pendant chain (in terms of bulkiness around the naphthalimide core, which restricts the ease of intermolecular π-π interactions) over the nanoaggregate morphology and solid state emissive properties of the AIEEgens; this can be rationalized to all aggregation-prone systems. These comprehensive studies establish a conceptually unique yet simple and effective method to precisely tune the nanomorphologies and the emission colors of aggregation-prone small organic molecules by judicious choice of the non-conjugated pendant chain. Thus, considering the prime role of the active layer nanomorphology in all organic optoelectronic devices, this methodology may emerge as a promising tool to improve device performance. Among all the congeners, the hexyl chain-containing congener (HNQ) forms well-defined nanoribbons with smaller diameters (as confirmed from DLS: 166 nm and FESEM: 150 nm) and provides a larger surface area. Consequently, the HNQ-nanoribbons were employed as a fluorescent sensor for the discriminative detection of trinitrophenol (TNP) in pure aqueous media. FE-SEM images revealed that, upon gradual addition of TNP (10 nM to 100 μM), these nanoribbons undergo an aggregation/disaggregation process, forming non-fluorescent co-aggregates with TNP, and provide highly enhanced sensitivity compared to existing state-of-the-art on aggregation-prone systems. Fluorescence titration studies confirmed that HNQ can detect the presence of TNP as low as 16.8 ppb and can serve as a cost-effective portable device incorporated with UV-light for on-site visual detection of TNP, even in the presence of potentially competing nitroaromatic compounds.
Collapse
Affiliation(s)
- Niranjan Meher
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India
| | | |
Collapse
|