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Hendricksen AT, Ezzatpour S, Pulukuri AJ, Ryan AT, Flanagan TJ, Frantz W, Buchholz DW, Ortega V, Monreal IA, Sahler JM, Nielsen AE, Aguilar HC, Mancini RJ. Thermophobic Trehalose Glycopolymers as Smart C-Type Lectin Receptor Vaccine Adjuvants. Adv Healthc Mater 2023; 12:e2202918. [PMID: 37002787 PMCID: PMC11212414 DOI: 10.1002/adhm.202202918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/06/2023] [Indexed: 04/04/2023]
Abstract
Herein, this work reports the first synthetic vaccine adjuvants that attenuate potency in response to small, 1-2 °C changes in temperature about their lower critical solution temperature (LCST). Adjuvant additives significantly increase vaccine efficacy. However, adjuvants also cause inflammatory side effects, such as pyrexia, which currently limits their use. To address this, a thermophobic vaccine adjuvant engineered to attenuate potency at temperatures correlating to pyrexia is created. Thermophobic adjuvants are synthesized by combining a rationally designed trehalose glycolipid vaccine adjuvant with thermoresponsive poly-N-isoporpylacrylamide (NIPAM) via reversible addition fragmentation chain transfer (RAFT) polymerization. The resulting thermophobic adjuvants exhibit LCSTs near 37 °C, and self-assembled into nanoparticles with temperature-dependent sizes (90-270 nm). Thermophobic adjuvants activate HEK-mMINCLE and other innate immune cell lines as well as primary mouse bone marrow derived dendritic cells (BMDCs) and bone marrow derived macrophages (BMDMs). Inflammatory cytokine production is attenuated under conditions mimicking pyrexia (above the LCST) relative to homeostasis (37 °C) or below the LCST. This thermophobic behavior correlated with decreased adjuvant Rg is observed by DLS, as well as glycolipid-NIPAM shielding interactions are observed by NOESY-NMR. In vivo, thermophobic adjuvants enhance efficacy of a whole inactivated influenza A/California/04/2009 virus vaccine, by increasing neutralizing antibody titers and CD4+ /44+ /62L+ lung and lymph node central memory T cells, as well as providing better protection from morbidity after viral challenge relative to unadjuvanted control vaccine. Together, these results demonstrate the first adjuvants with potency regulated by temperature. This work envisions that with further investigation, this approach can enhance vaccine efficacy while maintaining safety.
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Affiliation(s)
- Aaron T Hendricksen
- Department of Chemistry, Washington State University, 1470 NE College Ave, Pullman, WA, 99164, USA
| | - Shahrzad Ezzatpour
- Department of Microbiology and Immunology, Cornell University, 618 Tower Road, Ithaca, NY, 14850, USA
| | - Anunay J Pulukuri
- Department of Chemistry, Washington State University, 1470 NE College Ave, Pullman, WA, 99164, USA
| | - Austin T Ryan
- Department of Chemistry, Washington State University, 1470 NE College Ave, Pullman, WA, 99164, USA
| | - Tatum J Flanagan
- Department of Chemistry, Washington State University, 1470 NE College Ave, Pullman, WA, 99164, USA
| | - William Frantz
- Department of Chemistry, Washington State University, 1470 NE College Ave, Pullman, WA, 99164, USA
| | - David W Buchholz
- Department of Microbiology and Immunology, Cornell University, 618 Tower Road, Ithaca, NY, 14850, USA
| | - Victoria Ortega
- Department of Microbiology and Immunology, Cornell University, 618 Tower Road, Ithaca, NY, 14850, USA
| | - Isaac A Monreal
- Department of Microbiology and Immunology, Cornell University, 618 Tower Road, Ithaca, NY, 14850, USA
| | - Julie M Sahler
- Department of Microbiology and Immunology, Cornell University, 618 Tower Road, Ithaca, NY, 14850, USA
| | - Amy E Nielsen
- Astante Therapeutics Inc., 120 N Pine Street, Suite 270A, Spokane, WA, 99202, USA
| | - Hector C Aguilar
- Department of Microbiology and Immunology, Cornell University, 618 Tower Road, Ithaca, NY, 14850, USA
| | - Rock J Mancini
- Department of Chemistry, Washington State University, 1470 NE College Ave, Pullman, WA, 99164, USA
- Department of Chemistry and Biochemistry, Miami University, 651 E. High Street, Oxford, OH, 45056, USA
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2
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Galzitskaya OV, Grishin SY, Glyakina AV, Dovidchenko NV, Konstantinova AV, Kravchenko SV, Surin AK. The Strategies of Development of New Non-Toxic Inhibitors of Amyloid Formation. Int J Mol Sci 2023; 24:3781. [PMID: 36835194 PMCID: PMC9964835 DOI: 10.3390/ijms24043781] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
In recent years, due to the aging of the population and the development of diagnostic medicine, the number of identified diseases associated with the accumulation of amyloid proteins has increased. Some of these proteins are known to cause a number of degenerative diseases in humans, such as amyloid-beta (Aβ) in Alzheimer's disease (AD), α-synuclein in Parkinson's disease (PD), and insulin and its analogues in insulin-derived amyloidosis. In this regard, it is important to develop strategies for the search and development of effective inhibitors of amyloid formation. Many studies have been carried out aimed at elucidating the mechanisms of amyloid aggregation of proteins and peptides. This review focuses on three amyloidogenic peptides and proteins-Aβ, α-synuclein, and insulin-for which we will consider amyloid fibril formation mechanisms and analyze existing and prospective strategies for the development of effective and non-toxic inhibitors of amyloid formation. The development of non-toxic inhibitors of amyloid will allow them to be used more effectively for the treatment of diseases associated with amyloid.
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Affiliation(s)
- Oxana V. Galzitskaya
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Sergei Y. Grishin
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia
| | - Anna V. Glyakina
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
- Institute of Mathematical Problems of Biology RAS, The Branch of Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Nikita V. Dovidchenko
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Anastasiia V. Konstantinova
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
- Faculty of Biotechnology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Sergey V. Kravchenko
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia
| | - Alexey K. Surin
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia
- State Research Center for Applied Microbiology and Biotechnology, 142279 Obolensk, Russia
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3
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Saha J, Bose P, Dhakal S, Ghosh P, Rangachari V. Ganglioside-Enriched Phospholipid Vesicles Induce Cooperative Aβ Oligomerization and Membrane Disruption. Biochemistry 2022; 61:2206-2220. [PMID: 36173882 PMCID: PMC9840156 DOI: 10.1021/acs.biochem.2c00495] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A major hallmark of Alzheimer's disease (AD) is the accumulation of extracellular aggregates of amyloid-β (Aβ). Structural polymorphism observed among Aβ fibrils in AD brains seem to correlate with the clinical subtypes suggesting a link between fibril polymorphism and pathology. Since fibrils emerge from a templated growth of low-molecular-weight oligomers, understanding the factors affecting oligomer generation is important. Membrane lipids are key factors to influence early stages of Aβ aggregation and oligomer generation, which cause membrane disruption. We have previously demonstrated that conformationally discrete Aβ oligomers can be generated by modulating the charge, composition, and chain length of lipids and surfactants. Here, we extend our studies into liposomal models by investigating Aβ oligomerization on large unilamellar vesicles (LUVs) of total brain extracts (TBE), reconstituted lipid rafts (LRs), or 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC). Varying the vesicle composition by specifically increasing the amount of GM1 gangliosides as a constituent, we found that only GM1-enriched liposomes induce the formation of toxic, low-molecular-weight oligomers. Furthermore, we found that the aggregation on liposome surface and membrane disruption are highly cooperative and sensitive to membrane surface characteristics. Numerical simulations confirm such a cooperativity and reveal that GM1-enriched liposomes form twice as many pores as those formed in the absence GM1. Overall, this study uncovers mechanisms of cooperativity between oligomerization and membrane disruption under controlled lipid compositional bias, and refocuses the significance of the early stages of Aβ aggregation in polymorphism, propagation, and toxicity in AD.
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Affiliation(s)
- Jhinuk Saha
- Department of Chemistry and Biochemistry, School of Mathematics and Natural Sciences, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Priyankar Bose
- Department of Computer Science, Virginia Commonwealth University, Richmond, Virginia 23220, United States
| | - Shailendra Dhakal
- Center for Molecular and Cellular Biosciences, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Preetam Ghosh
- Department of Computer Science, Virginia Commonwealth University, Richmond, Virginia 23220, United States
| | - Vijayaraghavan Rangachari
- Department of Chemistry and Biochemistry, School of Mathematics and Natural Sciences, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States; Center for Molecular and Cellular Biosciences, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
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4
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Rajamohan R, Mohandoss S, Ashokkumar S, Madi F, Leila N, Murugavel K, Lee YR. A novel and water-soluble material for coronavirus inactivation from oseltamivir in the cavity of methyl and sulfated-β-cyclodextrins through inclusion complexation. J Pharm Biomed Anal 2022; 221:115057. [PMID: 36126612 PMCID: PMC9476363 DOI: 10.1016/j.jpba.2022.115057] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022]
Abstract
A potentially active water-soluble anti-viral with lesser toxic material from the Oseltamivir (OTV) has been produced by the sonication method. The formed material has been further characterized by UV–visible, FT-IR, powder XRD, SEM, TGA/DTA, ROESY, XPS, AFM and etc., The results of DFT calculation have proven that inclusion complexes (ICs) are theoretically and energetically more advantageous models and structures have also been proposed based on the results. Analysis of drug release has been carried out at three pH levels, and it is revealed the analysis is most helpful at acidic pH levels for the ICs with S-CD over H-CD. Over OTV without CDs, OTV:S-CD-ICs exhibited a very less cytotoxic ability on cancer cell lines than ICs with M-CD. ICs enhanced the coronavirus inactivation nature of OTV. This study provides for the first time a full characterization of ICs of OTV with CDs and highlights the impact of complexation on pharmacological activity.
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Affiliation(s)
- Rajaram Rajamohan
- School of Chemical Engineering, Yeungnam University, Gyeongson 38541, Republic of Korea.
| | - Sonaimuthu Mohandoss
- School of Chemical Engineering, Yeungnam University, Gyeongson 38541, Republic of Korea
| | - Sekar Ashokkumar
- PBRC Research center, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Fatiha Madi
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - Neour Leila
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - Kuppusamy Murugavel
- PG and Research Department of Chemistry, Government Arts College, Chidambaram 608102, India
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongson 38541, Republic of Korea.
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5
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Bhattacharya K, Kalita U, Singha NK. Tailor-made Glycopolymers via Reversible Deactivation Radical Polymerization: Design, Properties and Applications. Polym Chem 2022. [DOI: 10.1039/d1py01640g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Investigating the underlying mechanism of biological interactions using glycopolymer is becoming increasingly important owing to their unique recognition properties. The multivalent interactions between lectin and glycopolymer are significantly influenced by...
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6
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Stockmal KA, Downs LP, Davis AN, Kemp LK, Karim S, Morgan SE. Cationic Glycopolyelectrolytes for RNA Interference in Tick Cells. Biomacromolecules 2021; 23:34-46. [PMID: 34793129 DOI: 10.1021/acs.biomac.1c00824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The black-legged tick (Ixodes scapularis) is the primary vector for bacteria that cause Lyme disease (Borrelia burgdorferi), where numerous glycosylated tick proteins are involved at the interface of vector-host-pathogen interactions. Reducing the expression of key tick proteins, such as selenoprotein K (SelK), through RNA interference is a promising approach to reduce pathogen transmission, but efficient delivery of nucleic acids to arthropods has proven challenging. While cationic glycopolymers have been used as nonviral gene delivery vehicles in mammalian cells, their use in arthropod or insect gene transfection has not been established. In this study, statistical acrylamide-based cationic glycopolymers with glucose or galactose pendant groups were synthesized by reversible addition-fragmentation chain transfer polymerization, and the effects of the saccharide pendant group and cationic monomer loading on polymer cytotoxicity, RNA complexation, and SelK gene knockdown in ISE6 cells were evaluated. All polymers exhibited low cytotoxicity, yet RNA/copolymer complex cell uptake and gene knockdown were highly dependent on the saccharide structure and the N:P (amino to phosphate groups) ratio.
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Affiliation(s)
- Kelli A Stockmal
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Latoyia P Downs
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Ashley N Davis
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Lisa K Kemp
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Shahid Karim
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States.,Center for Molecular and Cellular Biosciences, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Sarah E Morgan
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
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7
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Saha J, Dean DN, Dhakal S, Stockmal KA, Morgan SE, Dillon KD, Adamo MF, Levites Y, Rangachari V. Biophysical characteristics of lipid-induced Aβ oligomers correlate to distinctive phenotypes in transgenic mice. FASEB J 2021; 35:e21318. [PMID: 33508158 PMCID: PMC7883479 DOI: 10.1096/fj.202002025rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/03/2020] [Accepted: 12/14/2020] [Indexed: 12/22/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that affects cognition and memory. Recent advances have helped identify many clinical sub‐types in AD. Mounting evidence point toward structural polymorphism among fibrillar aggregates of amyloid‐β (Aβ) to being responsible for the phenotypes and clinical manifestations. In the emerging paradigm of polymorphism and prion‐like propagation of aggregates in AD, the role of low molecular weight soluble oligomers, which are long known to be the primary toxic agents, in effecting phenotypes remains inconspicuous. In this study, we present the characterization of three soluble oligomers of Aβ42, namely 14LPOs, 16LPOs, and GM1Os with discreet biophysical and biochemical properties generated using lysophosphatidyl glycerols and GM1 gangliosides. The results indicate that the oligomers share some biophysical similarities but display distinctive differences with GM1Os. Unlike the other two, GM1Os were observed to be complexed with the lipid upon isolation. It also differs mainly in detection by conformation‐sensitive dyes and conformation‐specific antibodies, temperature and enzymatic stability, and in the ability to propagate morphologically‐distinct fibrils. GM1Os also show distinguishable biochemical behavior with pronounced neuronal toxicity. Furthermore, all the oligomers induce cerebral amyloid angiopathy (CAA) and plaque burden in transgenic AD mice, which seems to be a consistent feature among all lipid‐derived oligomers, but 16LPOs and GM1Os displayed significantly higher effect than the others. These results establish a correlation between molecular features of Aβ42 oligomers and their distinguishable effects in transgenic AD mice attuned by lipid characteristics, and therefore help bridge the knowledge gap in understanding how oligomer conformers could elicit AD phenotypes.
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Affiliation(s)
- Jhinuk Saha
- Department of Chemistry and Biochemistry, School of Mathematics and Natural Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Dexter N Dean
- Department of Chemistry and Biochemistry, School of Mathematics and Natural Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Shailendra Dhakal
- Department of Chemistry and Biochemistry, School of Mathematics and Natural Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Kelli A Stockmal
- School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Sarah E Morgan
- School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Kristy D Dillon
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, USA
| | - Munir F Adamo
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, USA
| | - Yona Levites
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, USA
| | - Vijayaraghavan Rangachari
- Department of Chemistry and Biochemistry, School of Mathematics and Natural Sciences, University of Southern Mississippi, Hattiesburg, MS, USA.,Center for Molecular and Cellular Biosciences, University of Southern Mississippi, Hattiesburg, MS, USA
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8
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Yang K, Yang Z, Chen X, Li W. The significance of sialylation on the pathogenesis of Alzheimer's disease. Brain Res Bull 2021; 173:116-123. [PMID: 33991608 DOI: 10.1016/j.brainresbull.2021.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 05/06/2021] [Accepted: 05/10/2021] [Indexed: 12/29/2022]
Abstract
Sialylation, one of the most common and complex modes of glycosylation, corresponds with the development of the infant brain and nervous system. The most prevalent neurodegenerative disease is Alzheimer's disease (AD), which is mainly characterized by cognitive decline and behavioral disorders. However, the relationship between sialylation and AD occurrence is poorly understood. In this article, we reviewed the role of sialylation on the occurrence and development of AD, then discussed the value of sialylation modification for AD diagnosis and treatment.
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Affiliation(s)
- Kangkang Yang
- College of Basic Medical Sciences, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China
| | - Zhaofei Yang
- College of Basic Medical Sciences, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China
| | - Xiaofeng Chen
- College of Basic Medical Sciences, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China
| | - Wenzhe Li
- College of Basic Medical Sciences, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China.
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9
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Bravo-Anaya LM, Rosselgong J, Fernández-Solís KG, Xiao Y, Vax A, Ibarboure E, Ruban A, Lebleu C, Joucla G, Garbay B, Garanger E, Lecommandoux S. Coupling of RAFT polymerization and chemoselective post-modifications of elastin-like polypeptides for the synthesis of gene delivery hybrid vectors. Polym Chem 2021. [DOI: 10.1039/d0py01293a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Hybrid cationic ELPs for nucleic acids transport and delivery were synthetized through the coupling of RAFT polymerization and biorthogonal chemistry of ELPs, introducing a specific number of positive charges to the ELP backbone.
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Affiliation(s)
| | | | | | - Ye Xiao
- University of Bordeaux
- CNRS
- Bordeaux INP
- Pessac
- France
| | - Amélie Vax
- University of Bordeaux
- CNRS
- Bordeaux INP
- Pessac
- France
| | | | - Anna Ruban
- University of Bordeaux
- CNRS
- Bordeaux INP
- Pessac
- France
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10
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Ghosh P, Bera A, De P. Current status, challenges and future directions in the treatment of neurodegenerative diseases by polymeric materials. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Wang M, Wang S, Li B, Tian Y, Zhang H, Bai L, Ba X. Synthesis of linear polyglucoside and inhibition on the amyloid fibril formation of hen egg white lysozyme. Int J Biol Macromol 2020; 166:771-777. [PMID: 33157132 DOI: 10.1016/j.ijbiomac.2020.10.234] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/18/2020] [Accepted: 10/29/2020] [Indexed: 12/29/2022]
Abstract
A novel polymer poly (6-O-MMAGlc) has been synthesized via free radical polymerization of monomer methyl 6-O-methacryloyl-α-D-glucoside (6-O-MMAGlc) and characterized. The influence of poly(6-O-MMAGlc) on the formation of hen egg white lysozyme (HEWL) amyloid fibril was detailly investigated, indicating that the polymer could effectively inhibit the formation of HEWL amyloid fibril. The formation kinetics of HEWL amyloid fibril with the presence of poly(6-O-MMAGlc) was measured by Thioflavin T (ThT) fluorescence method, demonstrating that poly(6-O-MMAGlc) could significantly inhibit the amyloid fibril formation of HEWL in a dose-dependent manner. The inhibitory result was furtherly illustrated by congo red (CR) binding assay, 8-anilino-1-naphthalenesulfonic acid (ANS) fluorescence assay, circular dichroism (CD) spectroscopy and transmission electron microscope (TEM).
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Affiliation(s)
- Mengna Wang
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
| | - Sujuan Wang
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China.
| | - Benye Li
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
| | - Yuelan Tian
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
| | - Haisong Zhang
- No. 212 Yuhuadonglu, Department of Nephrology, Affiliated Hospital of Hebei University, Baoding 071002, PR China
| | - Libin Bai
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China
| | - Xinwu Ba
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China; Affiliated Hospital of Hebei University, Baoding 071000, PR China.
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12
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Bristol AN, Saha J, George HE, Das PK, Kemp LK, Jarrett WL, Rangachari V, Morgan SE. Effects of Stereochemistry and Hydrogen Bonding on Glycopolymer-Amyloid-β Interactions. Biomacromolecules 2020; 21:4280-4293. [PMID: 32786526 PMCID: PMC7847044 DOI: 10.1021/acs.biomac.0c01077] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Saccharide stereochemistry plays an important role in carbohydrate functions such as biological recognition processes and protein binding. Synthetic glycopolymers with pendant saccharides of controlled stereochemistry provide an attractive approach for the design of polysaccharide-inspired biomaterials. Acrylamide-based polymers containing either β,d-glucose or β,d-galactose pendant groups, designed to mimic GM1 ganglioside saccharides, and their small-molecule analogues were used to evaluate the effect of stereochemistry on glycopolymer solution aggregation processes alone and in the presence of Aβ42 peptide using dynamic light scattering, gel permeation chromatography-multiangle laser light scattering, and fluorescence assays. Fourier transform infrared and nuclear magnetic resonance (NMR) were employed to determine hydrogen bonding patterns of the systems. The galactose-containing polymer displayed significant intramolecular hydrogen bonding and self-aggregation and minimal association with Aβ42, while the glucose-containing glycopolymers showed intermolecular interactions with the surrounding environment and association with Aβ42. Saturation transfer difference NMR spectroscopy demonstrated different binding affinities for the two glycopolymers to Aβ42 peptide.
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Affiliation(s)
- Ashleigh N Bristol
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Jhinuk Saha
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Hannah E George
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Pradipta K Das
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Lisa K Kemp
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - William L Jarrett
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Vijayaraghavan Rangachari
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
| | - Sarah E Morgan
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-5050, United States
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13
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Miyagawa A, Yamamura H. Synthesis of β-1,3-glucan mimics by β-1,3-glucan trisaccharyl monomer polymerization. Carbohydr Polym 2020; 227:115105. [PMID: 31590847 DOI: 10.1016/j.carbpol.2019.115105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/16/2019] [Accepted: 07/16/2019] [Indexed: 10/26/2022]
Abstract
β-1,3-Glucans are important as immunostimulating agents in living organisms. The multivalent binding of β-1,3-glucans to dectin-1, a cell surface receptor, activates immunological defenses. To study artificial immunostimulating agents, glycopolymers carrying β-1,3-glucan trisaccharides as artificial ligands were synthesized. The β-1,3-glucan trisaccharide, defined as an active unit of β-1,3-glucan, was constructed from D-glucose by glycosylation. A norbornene group was introduced as a polymerizable group into the trisaccharide derivative at the aglycone. The prepared endo/exo norbornene stereoisomers of the monomers were separated by silica gel chromatography and identified by NMR spectroscopy and mass spectrometry. The synthesized glycosyl monomers were polymerized and copolymerized with norbornene using 2nd generation Hoveyda-Grubbs catalyst, deprotected, and purified by gel filtration to prepare water-soluble glycopolymers of varied compositions and high molecular weights. These polymers will have the potential for multivalent binding to dectin-1 to activate immune response and facilitate studies to understand the binding mechanisms of β-1,3-glucans with dectin-1.
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Affiliation(s)
- Atsushi Miyagawa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Showa-ku, Nagoya, Aichi, 466-8555, Japan.
| | - Hatsuo Yamamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Showa-ku, Nagoya, Aichi, 466-8555, Japan.
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Javed I, Yu T, Peng G, Sánchez-Ferrer A, Faridi A, Kakinen A, Zhao M, Mezzenga R, Davis TP, Lin S, Ke PC. In Vivo Mitigation of Amyloidogenesis through Functional-Pathogenic Double-Protein Coronae. NANO LETTERS 2018; 18:5797-5804. [PMID: 30088935 DOI: 10.1021/acs.nanolett.8b02446] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Amyloid diseases are global epidemics with no cure available. Herein, we report a first demonstration of in vivo mitigation of amyloidogenesis using biomimetic nanotechnology. Specifically, the amyloid fragments (ba) of β-lactoglobulin, a whey protein, were deposited onto the surfaces of carbon nanotubes (baCNT), which subsequently sequestered human islet amyloid polypeptide (IAPP) through functional-pathogenic double-protein coronae. Conformational changes at the ba-IAPP interface were studied by Fourier transform infrared, circular dichroism, and X-ray scattering spectroscopies. baCNT eliminated the toxic IAPP species from zebrafish embryos, as evidenced by the assays of embryonic development, cell morphology, hatching, and survival as well as suppression of oxidative stress. In addition to IAPP, baCNT also displayed high potency against the toxicity of amyloid-β, thereby demonstrating the broad applicability of this biomimetic nanotechnology and the use of an embryonic zebrafish model for the high-throughput screening of a range of amyloidogenesis and their inhibitors in vivo.
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Affiliation(s)
- Ibrahim Javed
- 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
- Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering , Tongji University , 1239 Siping Road , Shanghai 200092 , China
| | - Tianyu Yu
- Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering , Tongji University , 1239 Siping Road , Shanghai 200092 , China
| | - Guotao Peng
- Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering , Tongji University , 1239 Siping Road , Shanghai 200092 , China
| | - Antoni Sánchez-Ferrer
- Department of Health Sciences & Technology , ETH Zurich , Schmelzbergstrasse 9 , LFO, E23, 8092 Zurich , Switzerland
| | - Ava Faridi
- 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
| | - Mei Zhao
- Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering , Tongji University , 1239 Siping Road , Shanghai 200092 , China
| | - Raffaele Mezzenga
- Department of Health Sciences & Technology , ETH Zurich , Schmelzbergstrasse 9 , LFO, E23, 8092 Zurich , Switzerland
| | - 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
| | - Sijie Lin
- Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering , Tongji University , 1239 Siping Road , Shanghai 200092 , China
| | - 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
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