1
|
Solid-phase synthesis and pathological evaluation of pyroglutamate amyloid-β 3-42 peptide. Sci Rep 2023; 13:505. [PMID: 36627316 PMCID: PMC9831997 DOI: 10.1038/s41598-022-26616-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/16/2022] [Indexed: 01/11/2023] Open
Abstract
Pyroglutamate amyloid-β3-42 (AβpE3-42) is an N-terminally truncated and pyroglutamate-modified Aβ peptide retaining highly hydrophobic, amyloidogenic, and neurotoxic properties. In Alzheimer's disease (AD) patients, AβpE3-42 peptides accumulate into oligomers and induce cellular toxicity and synaptic dysfunction. AβpE3-42 aggregates further seed the formation of amyloid plaques, which are the pathological hallmarks of AD. Given that AβpE3-42 peptides play critical roles in the development of neurodegeneration, a reliable and reproducible synthetic access to these peptides may support pathological and medicinal studies of AD. Here, we synthesized AβpE3-42 peptides through the microwave-assisted solid-phase peptide synthesis (SPPS). Utilizing thioflavin T fluorescence assay and dot blotting analysis with anti-amyloid oligomer antibody, the amyloidogenic activity of synthesized AβpE3-42 peptides was confirmed. We further observed the cytotoxicity of AβpE3-42 aggregates in cell viability test. To examine the cognitive deficits induced by synthetic AβpE3-42 peptides, AβpE3-42 oligomers were intracerebroventricularly injected into imprinting control region mice and Y-maze and Morris water maze tests were performed. We found that AβpE3-42 aggregates altered the expression level of postsynaptic density protein 95 in cortical lysates. Collectively, we produced AβpE3-42 peptides in the microwave-assisted SPPS and evaluated the amyloidogenic and pathological function of the synthesized peptides.
Collapse
|
2
|
Cho I, Yoon S, Park S, Hong SW, Cho E, Kim E, Kim HY, Kim Y. Immobilized Amyloid Hexamer Fragments to Map Active Sites of Amyloid-Targeting Chemicals. ACS Chem Neurosci 2023; 14:9-18. [PMID: 36445044 DOI: 10.1021/acschemneuro.2c00449] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
As amyloid-β (Aβ) peptide is considered a biomarker and pathological culprit of Alzheimer's disease, Aβ-targeting compounds have been investigated for diagnostics development and drug discovery of the disorder. Unlike amyloid plaque targeting agents, such as clinically available amyloid radiotracers intercalating into the β-sheet structures of the aggregates, monomer and oligomer targeting chemicals are difficult to develop, as the transient and polymorphic nature of these peptides impedes their structural understanding. Here, we report a mapping approach to explore targeting residues of Aβ-imaging probes and Aβ-regulating drug candidates by utilizing a set of fragmented Aβ hexamers immobilized on a 96-well microplate in combination with fluorescent full-length Aβ for on-plate aggregation. To evaluate the mapping potential of the peptide plate, we tested previously reported fluorescent imaging agents (CRANAD-28, bis-ANS), aggregation inhibitors (curcumin, scyllo-inositol), and aggregate dissociators (necrostatin-1, sunitinib) targeting Aβ. Our approach enabled mechanistic understanding of compounds targeting nonfibrillar Aβ on an interacting sequence level.
Collapse
Affiliation(s)
- Illhwan Cho
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea
| | - Soljee Yoon
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea.,Department of Integrative Biotechnology and Translational Medicine, Yonsei University, Incheon21983, Republic of Korea
| | - Sunghyun Park
- Department of Integrative Biotechnology and Translational Medicine, Yonsei University, Incheon21983, Republic of Korea
| | - Seung Woo Hong
- Department of Integrative Biotechnology and Translational Medicine, Yonsei University, Incheon21983, Republic of Korea
| | - Eunjung Cho
- Department of Medical Science, Yonsei University College of Medicine, Seoul03722, Republic of Korea.,Department of Psychiatry, Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul03722, Republic of Korea.,Brain Korea 21 Four Project for Medical Science, Yonsei University College of Medicine, Seoul03722, Republic of Korea
| | - Eosu Kim
- Department of Medical Science, Yonsei University College of Medicine, Seoul03722, Republic of Korea.,Department of Psychiatry, Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul03722, Republic of Korea
| | - Hye Yun Kim
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon21983, Republic of Korea.,Department of Integrative Biotechnology and Translational Medicine, Yonsei University, Incheon21983, Republic of Korea.,Integrated Science and Engineering Division, Yonsei University, Incheon21983, Republic of Korea.,POSTECH-Yonsei Campus, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk37673, Republic of Korea.,Amyloid Solution, Seongnam, Gyeonggi13486, Republic of Korea
| |
Collapse
|
3
|
Lee HY, Yoon S, Lee JH, Park K, Jung Y, Cho I, Lee D, Shin J, Kim K, Kim S, Kim J, Kim K, Han SH, Kim SM, Kim HJ, Kim HY, Kim I, Kim YS. Aryloxypropanolamine targets amyloid aggregates and reverses Alzheimer-like phenotypes in Alzheimer mouse models. Alzheimers Res Ther 2022; 14:177. [PMID: 36443837 PMCID: PMC9706920 DOI: 10.1186/s13195-022-01112-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 10/31/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Aggregated amyloid-β (Aβ) is considered a pathogenic initiator of Alzheimer's disease (AD), in strong association with tau hyperphosphorylation, neuroinflammation, synaptic dysfunction, and cognitive decline. As the removal of amyloid burden from AD patient brains by antibodies has shown therapeutic potential, the development of small molecule drugs inducing chemical dissociation and clearance of Aβ is compelling as a therapeutic strategy. In this study, we synthesized and screened aryloxypropanolamine derivatives and identified 1-(3-(2,4-di-tert-pentylphenoxy)-2-hydroxypropyl)pyrrolidin-1-ium chloride, YIAD002, as a strong dissociator of Aβ aggregates. METHODS The dissociative activity of aryloxypropanolamine derivatives against Aβ aggregates were evaluated through in vitro assays. Immunohistochemical staining, immunoblot assays, and the Morris water maze were used to assess the anti-Alzheimer potential in YIAD002-treated 5XFAD and transgenic APP/PS1 mice. Target-ligand interaction mechanism was characterized via a combination of peptide mapping, fluorescence dissociation assays, and constrained docking simulations. RESULTS Among 11 aryloxypropanolamine derivatives, YIAD002 exerted strongest dissociative activity against β-sheet-rich Aβ aggregates. Upon oral administration, YIAD002 substantially reduced amyloid burden and accordingly, improved cognitive performance in the Morris water maze and attenuated major pathological hallmarks of AD including tauopathy, neuroinflammation, and synaptic protein loss. Mechanism studies suggest that YIAD002 interferes with intermolecular β-sheet fibrillation by directly interacting with KLVFFA and IGLMVG domains of Aβ. In addition, YIAD002 was found to possess dissociative activity against aggregates of pyroglutamate-modified Aβ and tau. CONCLUSIONS Collectively, our results evince the potential of chemical-driven dissociation of Aβ aggregates by aryloxypropanolamines as a therapeutic modality of the amyloid clearance approach.
Collapse
Affiliation(s)
- Hee Yang Lee
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Soljee Yoon
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea.,Department of Integrative Biotechnology & Translational Medicine, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Jeong Hwa Lee
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Keunwan Park
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST), Gangwon-do, 25451, South Korea
| | - Youngeun Jung
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Illhwan Cho
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Donghee Lee
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Jisu Shin
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Kyeonghwan Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Sunmi Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Jimin Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Koeun Kim
- Amyloid Solution, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, South Korea
| | - Seung Hoon Han
- Amyloid Solution, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, South Korea
| | - Seong Muk Kim
- Amyloid Solution, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, South Korea
| | - Hye Ju Kim
- Amyloid Solution, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, South Korea
| | - Hye Yun Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea
| | - Ikyon Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea.
| | - Young Soo Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea. .,Department of Integrative Biotechnology & Translational Medicine, Yonsei University, Yeonsu-gu, Incheon, 21983, South Korea. .,Amyloid Solution, Bundang-gu, Seongnam-si, Gyeonggi-do, 13486, South Korea.
| |
Collapse
|
4
|
Validation of Fucoxanthin from Microalgae Phaeodactylum tricornutum for the Detection of Amyloid Burden in Transgenic Mouse Models of Alzheimer’s Disease. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11135878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The visualization of misfolded Aβ peptides by using fluorescence chemical dyes is very important in Alzheimer’s disease (AD) diagnosis. Here, we describe the fluorescent substance, fucoxanthin, which detects Aβ aggregates in the brain of AD transgenic mouse models. We found that fucoxanthin from the microalgae Phaeodactylum tricornutum has fluorescent excitation and emission wavelengths without any interference for Aβ interaction. Thus, we applied it to monitor Aβ aggregation in AD transgenic mouse models. Aβ plaques were visualized using fucoxanthin in the brain tissue of APP/PS1 and 5×FAD mice by histological staining with different staining methods. By comparing fucoxanthin-positive and thioflavin S-positive stained regions in the brains, we found that they are colocalized and that fucoxanthin can detect Aβ aggregates. Our finding suggests that fucoxanthin from P. tricornutum can be a new Aβ fluorescent imaging reagent in AD diagnosis.
Collapse
|
5
|
Park S, Kim HY, Oh HA, Shin J, Park IW, Yoon S, Woo DH, Kim Y. Quinacrine directly dissociates amyloid plaques in the brain of 5XFAD transgenic mouse model of Alzheimer's disease. Sci Rep 2021; 11:12043. [PMID: 34103615 PMCID: PMC8187640 DOI: 10.1038/s41598-021-91563-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 05/28/2021] [Indexed: 11/09/2022] Open
Abstract
Alzheimer's disease (AD) is the most common type of dementia characterized by the abnormal accumulation of amyloid-β (Aβ) in the brain. Aβ misfolding is associated with neuroinflammation and synaptic dysfunction, leading to learning and memory deficits. Therefore, Aβ production and aggregation have been one of the most popular drug targets for AD. Failures of drug candidates regulating the aforementioned Aβ cascade stimulated development of immunotherapy agents for clearance of accumulated Aβ in the brain. Here, we report that quinacrine, a blood-brain barrier penetrating antimalarial chemical drug, dissociates Aβ plaques in the brain of AD transgenic mice. When co-incubated with pre-formed Aβ fibrils, quinacrine decreased thioflavin T-positive β-sheets in vitro, on top of its inhibitory function on the fibril formation. We confirmed that quinacrine induced dissociation of high-molecular-weight Aβ aggregates into low-molecular-weight species by dot blots in association with size cut-off filtrations. Quinacrine was then administered to adult 5XFAD transgenic mice via weekly intravenous injections for 6 weeks, and we found a significant reduction of Aβ plaques and astrocytosis in their cortex and hippocampus. In western blots of quinacrine-administered mouse brains, amelioration of AD-related biomarkers, glial fibrillary acidic protein, postsynaptic protein 95, phosphorylated cAMP response element-binding protein, phosphorylated c-Jun N-terminal kinase were observed. Lastly, quinacrine-stimulated dissociation of misfolded aggregates induced recovery of synaptic function associated with Aβ in excitatory post-synaptic current recordings of primary rat cortical neurons treated with Aβ aggregates and quinacrine. Collectively, quinacrine can directly dissociate Aβ fibrils and alleviate decreased synaptic functions.
Collapse
Affiliation(s)
- Sohui Park
- Department of Pharmacy, Department of Integrative Biotechnology and Translational Medicine, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, 21983, Republic of Korea
| | - Hye Yun Kim
- Department of Pharmacy, Department of Integrative Biotechnology and Translational Medicine, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, 21983, Republic of Korea
| | - Hyun-A Oh
- Research Center for Convergence Toxicology, Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea
| | - Jisu Shin
- Department of Pharmacy, Department of Integrative Biotechnology and Translational Medicine, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, 21983, Republic of Korea
| | - In Wook Park
- Department of Pharmacy, Department of Integrative Biotechnology and Translational Medicine, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, 21983, Republic of Korea
| | - Soljee Yoon
- Department of Pharmacy, Department of Integrative Biotechnology and Translational Medicine, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, 21983, Republic of Korea
| | - Dong Ho Woo
- Research Center for Convergence Toxicology, Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy, Department of Integrative Biotechnology and Translational Medicine, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, 21983, Republic of Korea.
| |
Collapse
|
6
|
Shin YH, Ban YH, Shin J, Park IW, Yoon S, Ko K, Shin J, Nam SJ, Winter JM, Kim Y, Yoon YJ, Oh DC. Azetidine-Bearing Non-Ribosomal Peptides, Bonnevillamides D and E, Isolated from a Carrion Beetle-Associated Actinomycete. J Org Chem 2021; 86:11149-11159. [PMID: 33979513 DOI: 10.1021/acs.joc.1c00360] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new nonribosomal peptides, bonnevillamides D and E (1 and 2), have been discovered in Streptomyces sp. UTZ13 isolated from the carrion beetle, Nicrophorus concolor. Combinational analysis of the UV, MS, and NMR spectroscopic data revealed that their planar structures were comprised of dichlorinated linear peptides containing nonproteinogenic amino acid residues, such as 4-methylazetidinecarboxylic acid and 4-O-acetyl-5-methylproline. The configurations of bonnevillamides D and E (1 and 2) were determined based on ROESY correlations, the advanced Marfey's method, phenylglycine methyl ester derivatization, molecular modeling, and circular dichroism spectroscopy. The nonribosomal peptide synthetase biosynthetic pathway of bonnevillamides D and E has been proposed using bioinformatic analysis of the whole-genome sequence data of Streptomyces sp. UTZ13. Their biological activity toward the aggregation of amyloid-β, which is one of the key pathogenic proteins in Alzheimer's disease, was evaluated using a thioflavin T assay and gel electrophoresis. Bonnevillamides D and E reversed the fibril formation by inducing the monomerization of amyloid-β aggregates.
Collapse
Affiliation(s)
- Yern-Hyerk Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yeon Hee Ban
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jisu Shin
- Department of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, and Department of Integrative Biotechnology and Translational Medicine, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - In Wook Park
- Department of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, and Department of Integrative Biotechnology and Translational Medicine, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Soljee Yoon
- Department of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, and Department of Integrative Biotechnology and Translational Medicine, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Keebeom Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jaclyn M Winter
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - YoungSoo Kim
- Department of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, and Department of Integrative Biotechnology and Translational Medicine, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| |
Collapse
|
7
|
Shin J, Yang SH, Du YE, Park K, Kim D, Shin D, Kim J, Kim SH, Kim YK, Shin J, Oh DC, Kim Y. Borrelidin from Saltern-Derived Halophilic Nocardiopsis sp. Dissociates Amyloid- β and Tau Fibrils. J Alzheimers Dis Rep 2021; 5:7-13. [PMID: 33681712 PMCID: PMC7903018 DOI: 10.3233/adr-200247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background: Alzheimer’s disease (AD) is characterized by the aggregation of two pathological proteins, amyloid-β (Aβ) and tau, leading to neuronal and cognitive dysfunction. Clearance of either Aβ or tau aggregates by immunotherapy has become a potential therapy, as these aggregates are found in the brain ahead of the symptom onset. Given that Aβ and tau independently and cooperatively play critical roles in AD development, AD treatments might require therapeutic approaches to eliminate both aggregates together. Objective: We aimed to discover a chemical drug candidate from natural sources for direct dissociation of both insoluble Aβ and tau aggregates through in vitro assessments. Methods: We isolated four borrelidin chemicals from a saltern-derived halophilic actinomycete strain of rare genus Nocardiopsis and simulated their docking interactions with Aβ fibrils. Then, anti-cytotoxic, anti-Aβ, and anti-tau effects of borrelidins were examined by MTT assays with HT22 hippocampal cell line, thioflavin T assays, and gel electrophoresis. Results: When HT22 cells were exposed to Aβ aggregates, the treatment of borrelidins alleviates the Aβ-induced toxicity. These anti-cytotoxic effects can be derived from the inhibitory functions of borrelidins against the Aβ aggregation as shown in thioflavin T and gel electrophoretic analyses. Among them, especially borrelidin, which exhibits the highest probability of docking, not only dissociates Aβ aggregates but also directly regulates tau aggregation. Conclusion: Borrelidin dissociates insoluble Aβ and tau aggregates together and our findings support the view that it is possible to develop an alternative chemical approach mimicking anti-Aβ or anti-tau immunotherapy for clearance of both aggregates.
Collapse
Affiliation(s)
- Jisu Shin
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - Seung-Hoon Yang
- Department of Medical Biotechnology, Dongguk University, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Young Eun Du
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Keunwan Park
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST), Gangneung-si, Gangwon-do, Republic of Korea
| | - DaWon Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - Daniel Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Jungwoo Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Seong-Hwan Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Yun Kyung Kim
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea.,Department of Industrial Pharmaceutical Sciences and Department of Integrative Biotechnology and Translational Medicine, Yonsei University, Incheon, Republic of Korea
| |
Collapse
|
8
|
Bacchella C, Brewster JT, Bähring S, Dell’Acqua S, Root HD, Thiabaud GD, Reuther JF, Monzani E, Sessler JL, Casella L. Condition-Dependent Coordination and Peroxidase Activity of Hemin-Aβ Complexes. Molecules 2020; 25:E5044. [PMID: 33143109 PMCID: PMC7662341 DOI: 10.3390/molecules25215044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 01/07/2023] Open
Abstract
The peroxidase activity of hemin-peptide complexes remains a potential factor in oxidative damage relevant to neurodegeneration. Here, we present the effect of temperature, ionic strength, and pH relevant to pathophysiological conditions on the dynamic equilibrium between high-spin and low-spin hemin-Aβ40 constructs. This influence on peroxidase activity was also demonstrated using 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and dopamine (DA) oxidation rate analyses with increasing ratios of Aβ16 and Aβ40 (up to 100 equivalents). Interaction and reactivity studies of aggregated Aβ40-hemin revealed enhanced peroxidase activity versus hemin alone. Comparison of the results obtained using Aβ16 and Aβ40 amyloid beta peptides revealed marked differences and provide insight into the potential effects of hemin-Aβ on neurological disease progression.
Collapse
Affiliation(s)
- Chiara Bacchella
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
| | - James T. Brewster
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
| | - Steffen Bähring
- Department of Physics, Chemistry, and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Simone Dell’Acqua
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
| | - Harrison D. Root
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
| | - Gregory D. Thiabaud
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
| | - James F. Reuther
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA
| | - Enrico Monzani
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
| | - Jonathan L. Sessler
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
| | - Luigi Casella
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
| |
Collapse
|
9
|
Kim HY, Lee H, Lee JK, Kim HV, Kim KS, Kim Y. Bicine promotes rapid formation of β-sheet-rich amyloid-β fibrils. PLoS One 2020; 15:e0240608. [PMID: 33048999 PMCID: PMC7553346 DOI: 10.1371/journal.pone.0240608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/29/2020] [Indexed: 12/27/2022] Open
Abstract
Fibrillar aggregates of amyloid-β (Aβ) are the main component of plaques lining the cerebrovasculature in cerebral amyloid angiopathy. As the predominant Aβ isoform in vascular deposits, Aβ40 is a valuable target in cerebral amyloid angiopathy research. However, the slow process of Aβ40 aggregation in vitro is a bottleneck in the search for Aβ-targeting molecules. In this study, we sought a method to accelerate the aggregation of Aβ40in vitro, to improve experimental screening procedures. We evaluated the aggregating ability of bicine, a biological buffer, using various in vitro methods. Our data suggest that bicine promotes the aggregation of Aβ40 with high speed and reproducibility, yielding a mixture of aggregates with significant β-sheet-rich fibril formation and toxicity.
Collapse
Affiliation(s)
- Hye Yun Kim
- Department of Pharmacy, Yonsei University, Incheon, Republic of Korea
- Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - HeeYang Lee
- Department of Pharmacy, Yonsei University, Incheon, Republic of Korea
- Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
- Integrated Science and Engineering Division, Yonsei University, Incheon, Republic of Korea
| | - Jong Kook Lee
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Hyunjin Vincent Kim
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Key-Sun Kim
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy, Yonsei University, Incheon, Republic of Korea
- Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
- Integrated Science and Engineering Division, Yonsei University, Incheon, Republic of Korea
- * E-mail:
| |
Collapse
|
10
|
Volkova TD, Koroev DO, Kamynina AV, Filatova MP, Avetisyan AV, Volpina OM. Optimization of Solid-Phase Synthesis of the 1-40 Beta-Amyloid and Preparation of Antibodies Revealing It under Immunoblotting Conditions. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1068162020020181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
11
|
Kawamoto H, Takeshita F, Murata K. Inhibitory Effects of Essential Oil Extracts From Panax Plants Against β-Secretase, Cholinesterase, and Amyloid Aggregation. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19881549] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Numerous pharmacological studies on Panax plants have been performed. However, these studies were limited to ginsenosides, which are typical constituents in Panax plants. In our research program to discover novel agents to prevent dementia and improve dementia symptoms, especially Alzheimer’s disease (AD), we investigated the inhibitory activities of essential oil (EO) extracts from 4 Panax plants against β-secretase, amyloid β (Aβ) aggregation, acetylcholinesterase (AChE), and butyrylcholinesterase (BChE). An EO extract of Panax japonicus showed the most potent activity with 51.3% inhibition at 500 μg/mL against β-secretase. Panax ginseng showed the most potent inhibitory activity against AChE and BChE with 70.4% and 84.4% inhibition at 50 μg/mL, respectively. Panax notoginseng extract showed the most potent activity with 57.3% inhibition at 500 μg/mL against Aβ aggregation. From these results, an EO extract of P. ginseng could be an effective agent to improve AD symptoms, while EO extracts of P. japonicus and P. notoginseng could be suitable for AD prevention.
Collapse
Affiliation(s)
| | | | - Kazuya Murata
- Faculty of Pharmacy, Kindai University, Higashiosaka, Osaka, Japan
- Antiaging Center, Kindai University, Higashiosaka, Osaka, Japan
| |
Collapse
|
12
|
Kasim JK, Kavianinia I, Harris PWR, Brimble MA. Three Decades of Amyloid Beta Synthesis: Challenges and Advances. Front Chem 2019; 7:472. [PMID: 31334219 PMCID: PMC6614915 DOI: 10.3389/fchem.2019.00472] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 06/19/2019] [Indexed: 01/09/2023] Open
Abstract
Aggregation of the pathological amyloid beta (Aβ) isoform Aβ1−42 into senile plaques is a neuropathological hallmark of Alzheimer's disease (AD). The biochemical significance of this phenomenon therefore necessitates the need for ready access to Aβ1−42 for research purposes. Chemical synthesis of the peptide, however, is technically difficult to perform given its propensity to aggregate both on resin during solid phase peptide synthesis and in solution during characterization. This review presents a chronological summary of key publications in the field of Aβ1−42 synthesis, dating back from its maiden synthesis by Burdick et al. Challenges associated with the preparation of Aβ1−42 were identified, and the solutions designed over the course of time critically discussed herein. Ultimately, the intention of this review is to provide readers with an insight into the progress that has been made in the last three decades, and how this has advanced broader research in AD.
Collapse
Affiliation(s)
- Johanes K Kasim
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Iman Kavianinia
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand.,School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
| | - Paul W R Harris
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand.,School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
| | - Margaret A Brimble
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand.,School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
| |
Collapse
|
13
|
Yang SH, Shin J, Shin NN, Hwang JH, Hong SC, Park K, Lee JW, Lee S, Baek S, Kim K, Cho I, Kim Y. A small molecule Nec-1 directly induces amyloid clearance in the brains of aged APP/PS1 mice. Sci Rep 2019; 9:4183. [PMID: 30862818 PMCID: PMC6414664 DOI: 10.1038/s41598-019-40205-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 02/12/2019] [Indexed: 12/18/2022] Open
Abstract
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder characterized by the formation of toxic amyloid-β (Aβ) oligomers and plaques. Considering that Aβ misfolding and aggregation precedes the progressive development of cognitive impairment in AD, investigating a therapeutic means by clearance of pre-existing Aβ aggregates shows promise as a viable disease-modifying treatment. Here, we report that a small molecule, necrostatin-1 (Nec-1), reduces Aβ aggregates back to non-toxic monomers in vitro and in vivo. Intravenous administration of Nec-1 reduced the levels of Aβ plaques in the brains of aged APP/PS1 double transgenic mice. In addition, Nec-1 exhibited therapeutic effects against Aβ aggregates by inhibiting Aβ-induced brain cell death in neuronal and microglial cell lines. Nec-1 also showed anti-apoptotic and anti-necroptotic effects in the cortex of aged APP/PS1 mice by reducing levels of phosphorylated-RIPK3 and Bax and increasing the levels of Bcl-2. According to our data in vitro and in silico, the methyl group of the amine in the 2-thioxo-4-imidazolidinone is the key moiety of Nec-1 that directs its activity against aggregated Aβ. Given that the accumulation of Aβ aggregates is an important hallmark of AD, our studies provide strong evidence that Nec-1 may serve a key role in the development of AD treatment.
Collapse
Affiliation(s)
- Seung-Hoon Yang
- Department of Medical Biotechnology, College of Life Science and Biotechnology, Dongguk University, Seoul, 04620, Republic of Korea
| | - Jisu Shin
- Department of Pharmacy, Yonsei University, Incheon, 21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, 21983, Republic of Korea
| | - Naewoo Neo Shin
- Integrated Science and Engineering Division, Yonsei University, Incheon, 21983, Republic of Korea
| | - Ji-Hyun Hwang
- Natural Product Informatics Research Center, Gangneung, 25451, Republic of Korea
| | - Sung-Chul Hong
- Natural Product Informatics Research Center, Gangneung, 25451, Republic of Korea
| | - Keunwan Park
- Natural Product Informatics Research Center, Gangneung, 25451, Republic of Korea
| | - Jae Wook Lee
- Natural Constituent Research Center, Korea Institute of Science and Technology, Gangneung, 25451, Republic of Korea
| | - Sejin Lee
- Department of Pharmacy, Yonsei University, Incheon, 21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, 21983, Republic of Korea
| | - Seungyeop Baek
- Department of Pharmacy, Yonsei University, Incheon, 21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, 21983, Republic of Korea.,Department of Biotechnology, Yonsei University, Incheon, 21983, Republic of Korea
| | - Kyeonghwan Kim
- Department of Pharmacy, Yonsei University, Incheon, 21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, 21983, Republic of Korea
| | - Illhwan Cho
- Department of Pharmacy, Yonsei University, Incheon, 21983, Republic of Korea.,Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, 21983, Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy, Yonsei University, Incheon, 21983, Republic of Korea. .,Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, 21983, Republic of Korea. .,Integrated Science and Engineering Division, Yonsei University, Incheon, 21983, Republic of Korea.
| |
Collapse
|
14
|
Kim HY, Yang SH, Yoon J, Jang H, Baek S, Shin J, Kim SH, Kim Y. Taurine-Carbohydrate Derivative Stimulates Fibrillogenesis of Amyloid-β and Reduce Alzheimer-Like Behaviors. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 975 Pt 1:225-232. [PMID: 28849458 DOI: 10.1007/978-94-024-1079-2_20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Amyloid-β (Aβ) aggregates are a hallmark of Alzheimer's disease (AD). Through the misfolding process of Aβ in the brain, oligomeric forms of Aβ accumulate and significantly damage the brain cells inducing neuronal loss and cognitive dysfunctions that lead to AD. We hypothesized that decrease in Aβ oligomers during the aggregation process might be able to reduce Aβ-dependent brain damage. As taurine-like chemicals are often reported to have direct binding abilities to Aβ, we prepared a chemical library that consisted of taurine-carbohydrate derivatives to search for molecules that target Aβ and accelerate its fibrillogenesis. Here, we report that 1-deoxy-1-(2-sulfoethylamino)-D-fructose stimulates the formation of relatively less toxic Aβ fibrils leading to prevention of cognitive deficits in AD acute model mice.
Collapse
Affiliation(s)
- Hye Yun Kim
- Department of pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, South Korea
| | - Seung-Hoon Yang
- Brain Science Institute, Korea Institute of Science and Technology (KIST) Hwarangno 24-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
| | - Jin Yoon
- Brain Science Institute, Korea Institute of Science and Technology (KIST) Hwarangno 24-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
- Department of Biology, Massachusetts Institute of Technology, Boston, MA, USA
| | - HoChung Jang
- Department of pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, South Korea
- Brain Science Institute, Korea Institute of Science and Technology (KIST) Hwarangno 24-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
- Department of Biological Chemistry, Korea University of Science and Technology (UST), 217 Gajungro Yuseong-gu, Daegeon, 34113, South Korea
| | - Seungyeop Baek
- Brain Science Institute, Korea Institute of Science and Technology (KIST) Hwarangno 24-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jisu Shin
- Department of pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, South Korea
| | - Sung Hoon Kim
- Department of Chemistry, Konkuk University, Seoul, South Korea.
| | - YoungSoo Kim
- Department of pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, South Korea.
| |
Collapse
|
15
|
Jang H, Lee S, Choi SL, Kim HY, Baek S, Kim Y. Taurine Directly Binds to Oligomeric Amyloid-β and Recovers Cognitive Deficits in Alzheimer Model Mice. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 975 Pt 1:233-241. [PMID: 28849459 DOI: 10.1007/978-94-024-1079-2_21] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia leading to severe cognitive decline. During the progression of AD, amyloid-β (Aβ) monomers aggregate into neurotoxic soluble oligomeric Aβ that causes cognitive impairments. Our previous study indicates that oral supplementation of taurine at 1000 mg/kg/day significantly ameliorates hippocampal-dependent cognitive deficits in APP/PS1 transgenic AD mouse model. However, Aβ plaques and oligomeric Aβ levels are not affected after administration of taurine and the oral dosage of taurine was relatively high. Thus, in this study, we focused on direct correlation between taurine and oligomeric Aβ, causing memory deficits in a lower oral dosage of taurine, 250 mg/kg/day. We induced AD-like cognitive impairments to adult normal mice and orally administered taurine via drinking water for 10 days. We confirmed that taurine administration improved cognitive deficits in oligomeric Aβ-infusion mice in Y-maze and passive avoidance tests without activity alteration of mice. In addition, we found that taurine directly bound to oligomeric Aβ in surface plasmon resonance analyses. Our results propose that taurine can ameliorate cognitive impairment by directly binding to oligomeric Aβ in oral administration of 250 mg/kg/day for 10 days.
Collapse
Affiliation(s)
- HoChung Jang
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
- Biological Chemistry Program, Korea University of Science and Technology (UST), 217 Gajungro Yuseong-gu, Daegeon, 34113, South Korea
- Department of Pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsugu, Incheon, 21983, South Korea
| | - Sejin Lee
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
- Biological Chemistry Program, Korea University of Science and Technology (UST), 217 Gajungro Yuseong-gu, Daegeon, 34113, South Korea
- Department of Pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsugu, Incheon, 21983, South Korea
| | - Sujin Lea Choi
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
| | - Hye Yun Kim
- Department of Pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsugu, Incheon, 21983, South Korea
| | - Seungyeop Baek
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, South Korea
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - YoungSoo Kim
- Department of Pharmacy and Integrated Science and Engineering, Yonsei University, 85 Songdogwahak-ro, Yeonsugu, Incheon, 21983, South Korea.
| |
Collapse
|
16
|
Yang SH, Lee DK, Shin J, Lee S, Baek S, Kim J, Jung H, Hah JM, Kim Y. Nec-1 alleviates cognitive impairment with reduction of Aβ and tau abnormalities in APP/PS1 mice. EMBO Mol Med 2017; 9:61-77. [PMID: 27861127 PMCID: PMC5210088 DOI: 10.15252/emmm.201606566] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by cognitive symptoms of learning and memory deficits. Such cognitive impairments are attributed to brain atrophy resulting from progressive neuronal and synaptic loss; therefore, alleviation of neural cell death is as an important target of treatment as other classical hallmarks of AD, such as aggregation of amyloid‐β (Aβ) and hyperphosphorylation of tau. Here, we found that an anti‐necroptotic molecule necrostatin‐1 (Nec‐1) directly targets Aβ and tau proteins, alleviates brain cell death and ameliorates cognitive impairment in AD models. In the cortex and hippocampus of APP/PS1 double‐transgenic mice, Nec‐1 treatment reduced the levels of Aβ oligomers, plaques and hyperphosphorylated tau without affecting production of Aβ, while it altered the levels of apoptotic marker proteins. Our results showing multiple beneficial modes of action of Nec‐1 against AD provide evidence that Nec‐1 may serve an important role in the development of preventive approach for AD.
Collapse
Affiliation(s)
- Seung-Hoon Yang
- Convergence Research Center for Dementia and Center for Neuro-Medicine, Brain Science Institute Korea Institute of Science and Technology, Seoul, Korea
| | - Dongkeun Kenneth Lee
- Convergence Research Center for Dementia and Center for Neuro-Medicine, Brain Science Institute Korea Institute of Science and Technology, Seoul, Korea
| | - Jisu Shin
- Convergence Research Center for Dementia and Center for Neuro-Medicine, Brain Science Institute Korea Institute of Science and Technology, Seoul, Korea
| | - Sejin Lee
- Convergence Research Center for Dementia and Center for Neuro-Medicine, Brain Science Institute Korea Institute of Science and Technology, Seoul, Korea.,Biological Chemistry Program, Korea University of Science and Technology, Daejeon, Korea
| | - Seungyeop Baek
- Convergence Research Center for Dementia and Center for Neuro-Medicine, Brain Science Institute Korea Institute of Science and Technology, Seoul, Korea.,Department of Biotechnology, Yonsei University, Seoul, Korea
| | - Jiyoon Kim
- Convergence Research Center for Dementia and Center for Neuro-Medicine, Brain Science Institute Korea Institute of Science and Technology, Seoul, Korea.,Biological Chemistry Program, Korea University of Science and Technology, Daejeon, Korea
| | - Hoyong Jung
- Department of Pharmacy, College of Pharmacy & Institute of Pharmaceutical Science and Technology Hanyang University, Ansan, Kyeonggi-do, Korea
| | - Jung-Mi Hah
- Department of Pharmacy, College of Pharmacy & Institute of Pharmaceutical Science and Technology Hanyang University, Ansan, Kyeonggi-do, Korea
| | - YoungSoo Kim
- Convergence Research Center for Dementia and Center for Neuro-Medicine, Brain Science Institute Korea Institute of Science and Technology, Seoul, Korea .,Biological Chemistry Program, Korea University of Science and Technology, Daejeon, Korea
| |
Collapse
|
17
|
Guo J, Yu L, Sun Y, Dong X. Kinetic Insights into Zn2+-Induced Amyloid β-Protein Aggregation Revealed by Stopped-Flow Fluorescence Spectroscopy. J Phys Chem B 2017; 121:3909-3917. [DOI: 10.1021/acs.jpcb.6b12187] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Jingjing Guo
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering of the Ministry
of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Linling Yu
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering of the Ministry
of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yan Sun
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering of the Ministry
of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xiaoyan Dong
- Department of Biochemical
Engineering and Key Laboratory of Systems Bioengineering of the Ministry
of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| |
Collapse
|
18
|
Kim HY, Lee DK, Chung BR, Kim HV, Kim Y. Intracerebroventricular Injection of Amyloid-β Peptides in Normal Mice to Acutely Induce Alzheimer-like Cognitive Deficits. J Vis Exp 2016. [PMID: 27023127 DOI: 10.3791/53308] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Amyloid-β (Aβ) is a major pathological mediator of both familial and sporadic Alzheimer's disease (AD). In the brains of AD patients, progressive accumulation of Aβ oligomers and plaques is observed. Such Aβ abnormalities are believed to block long-term potentiation, impair synaptic function, and induce cognitive deficits. Clinical and experimental evidences have revealed that the acute increase of Aβ levels in the brain allows development of Alzheimer-like phenotypes. Hence, a detailed protocol describing how to acutely generate an AD mouse model via the intracerebroventricular (ICV) injection of Aβ is necessary in many cases. In this protocol, the steps of the experiment with an Aβ-injected mouse are included, from the preparation of peptides to the testing of behavioral abnormalities. The process of preparing the tools and animal subjects before the injection, of injecting the Aβ into the mouse brain via ICV injection, and of assessing the degree of cognitive impairment are easily explained throughout the protocol, with an emphasis on tips for effective ICV injection of Aβ. By mimicking certain aspects of AD with a designated injection of Aβ, researchers can bypass the aging process and focus on the downstream pathology of Aβ abnormalities.
Collapse
Affiliation(s)
- Hye Yun Kim
- Center for Neuro-Medicine, Korea Institute of Science and Technology; Research Institute, GoshenBiotech, Inc
| | - Dongkeun K Lee
- Center for Neuro-Medicine, Korea Institute of Science and Technology
| | - Bo-Ryehn Chung
- Center for Neuro-Medicine, Korea Institute of Science and Technology; Department of Chemical and Biological Engineering, Princeton University
| | - Hyunjin V Kim
- Center for Neuro-Medicine, Korea Institute of Science and Technology; Biological Chemistry Program, Korea University of Science and Technology
| | - YoungSoo Kim
- Center for Neuro-Medicine, Korea Institute of Science and Technology; Biological Chemistry Program, Korea University of Science and Technology;
| |
Collapse
|
19
|
Lee S, Kim Y. Anti-amyloidogenic Approach to Access Amyloid-β(1-42) in Fmoc Solid-Phase Synthesis. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10391] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sejin Lee
- Center for Neuro-Medicine, Brain Science Institute; Korea Institute of Science and Technology; Seoul 136-791 Korea
- Biological Chemistry Program; Korea University of Science and Technology; Daejeon 305-350 Korea
| | - YoungSoo Kim
- Center for Neuro-Medicine, Brain Science Institute; Korea Institute of Science and Technology; Seoul 136-791 Korea
- Biological Chemistry Program; Korea University of Science and Technology; Daejeon 305-350 Korea
| |
Collapse
|
20
|
Correlations of amyloid-β concentrations between CSF and plasma in acute Alzheimer mouse model. Sci Rep 2014; 4:6777. [PMID: 25345439 PMCID: PMC4209448 DOI: 10.1038/srep06777] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 10/07/2014] [Indexed: 12/27/2022] Open
Abstract
Amyloid-β (Aβ) is one of the few neuropathological biomarkers associated with transporters of the blood-brain barrier (BBB). Despite the well-characterized clinical indication of decreasing Aβ levels in the cerebrospinal fluid (CSF) during the development of Alzheimer's disease (AD), the link between the alternation of Aβ level in the blood and the progress of the disorder is still controversial. Here, we report a direct correlation of Aβ(1-42) levels between CSF and plasma in AD mouse model. We injected monomeric Aβ(1-42) directly into the intracerebroventricular (ICV) region of normal adult mouse brains to induce AD-like phenotypes. Using sandwich enzyme-linked immunosorbent assays, we observed proportional elevation of Aβ(1-42) levels in both CSF and plasma in a dose-dependent manner. Our findings that plasma Aβ(1-42) reflects the condition of CSF Aβ(1-42) warrant further investigation as a biomarker for the blood diagnosis of AD.
Collapse
|
21
|
Detection and quantification of plasma amyloid-β by selected reaction monitoring mass spectrometry. Anal Chim Acta 2014; 840:1-9. [PMID: 25086887 DOI: 10.1016/j.aca.2014.06.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 05/29/2014] [Accepted: 06/16/2014] [Indexed: 01/25/2023]
Abstract
Amyloid-β (Aβ) in human plasma was detected and quantified by an antibody-free method, selected reaction monitoring mass spectrometry (SRM-MS) in the current study. Due to its low abundance, SRM-based quantification in 10 μL plasma was a challenge. Prior to SRM analysis, human plasma proteins as a whole were digested by trypsin and high pH reversed-phase liquid chromatography (RPLC) was used to fractionate the tryptic digests and to collect peptides, Aβ(1-5), Aβ(6-16), Aβ(17-28) and Aβ(29-40(42)) of either Aβ(1-40) or Aβ(1-42). Among those peptides, Aβ(17-28) was selected as a surrogate to measure the total Aβ level. Human plasma samples obtained from triplicate sample preparations were analyzed, obtaining 4.20 ng mL(-1) with a CV of 25.3%. Triplicate measurements for each sample preparation showed CV of <5%. Limit of quantification was obtained as 132 pM, which corresponded to 570 pg mL(-1) of Aβ(1-40). Until now, most quantitative measurements of Aβ in plasma or cerebrospinal fluid have required antibody-based immunoassays. Since quantification of Aβ by immunoassays is highly dependent on the extent of epitope exposure due to aggregation or plasma protein binding, it is difficult to accurately measure the actual concentration of Aβ in plasma. Our diagnostic method based on SRM using a surrogate peptide of Aβ is promising in that actual amounts of total Aβ can be measured regardless of the conformational status of the biomarker.
Collapse
|
22
|
Therapeutic and pharmacokinetic characterizations of an anti-amyloidogenic bis-styrylbenzene derivative for Alzheimer’s disease treatment. Bioorg Med Chem Lett 2013; 23:3467-9. [DOI: 10.1016/j.bmcl.2013.02.104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 02/13/2013] [Accepted: 02/25/2013] [Indexed: 11/21/2022]
|
23
|
Kim HV, Kim HY, Ehrlich HY, Choi SY, Kim DJ, Kim Y. Amelioration of Alzheimer's disease by neuroprotective effect of sulforaphane in animal model. Amyloid 2013; 20:7-12. [PMID: 23253046 DOI: 10.3109/13506129.2012.751367] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Pathophysiological evidences of AD have indicated that aggregation of Aβ is one of the principal causes of neuronal dysfunction, largely by way of inducing oxidative stresses such as free radical formation. We hypothesized that the known antioxidative attribute of SFN could be harnessed in Alzheimer's treatment. SFN is an indirect, potent antioxidant derived from broccoli that has previously been found to stimulate the Nrf2-ARE pathway and facilitate several other cytoprotective mechanisms. In this study, administration of SFN ameliorated cognitive function of Aβ-induced AD acute mouse models in Y-maze and passive avoidance behavior tests. Interestingly, we found that the therapeutic effect of SFN did not involve inhibition of Aβ aggregation. While the exact mechanism of interaction of SFN in AD has not yet been ascertained, our results suggest that SFN can aid in cognitive impairment and may protect the brain from amyloidogenic damages.
Collapse
Affiliation(s)
- Hyunjin Vincent Kim
- Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | | | | | | | | | | |
Collapse
|