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Mohankumar A, Kalaiselvi D, Thiruppathi G, Muthusaravanan S, Vijayakumar S, Suresh R, Tawata S, Sundararaj P. Santalol Isomers Inhibit Transthyretin Amyloidogenesis and Associated Pathologies in Caenorhabditis elegans. Front Pharmacol 2022; 13:924862. [PMID: 35784752 PMCID: PMC9243336 DOI: 10.3389/fphar.2022.924862] [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: 04/20/2022] [Accepted: 05/25/2022] [Indexed: 11/30/2022] Open
Abstract
Transthyretin (TTR) is a homotetrameric protein found in human serum and is implicated in fatal inherited amyloidoses. Destabilization of native TTR confirmation resulting from mutation, environmental changes, and aging causes polymerization and amyloid fibril formation. Although several small molecules have been reported to stabilize the native state and inhibit TTR aggregation, prolonged use can cause serious side effects. Therefore, pharmacologically enhancing the degradation of TTR aggregates and kinetically stabilizing the native tetrameric structure with bioactive molecule(s) could be a viable therapeutic strategy to hinder the advancement of TTR amyloidoses. In this context, here we demonstrated α- and β-santalol, natural sesquiterpenes from sandalwood, as a potent TTR aggregation inhibitor and native state stabilizer using combined in vitro, in silico, and in vivo experiments. We found that α- and β-santalol synergize to reduce wild-type (WT) and Val30Met (V30M) mutant TTR aggregates in novel C. elegans strains expressing TTR fragments fused with a green fluorescent protein in body wall muscle cells. α- and β-Santalol extend the lifespan and healthspan of C. elegans strains carrying TTRWT::EGFP and TTRV30M::EGFP transgene by activating the SKN-1/Nrf2, autophagy, and proteasome. Moreover, α- and β-santalol directly interacted with TTR and reduced the flexibility of the thyroxine-binding cavity and homotetramer interface, which in turn increases stability and prevents the dissociation of the TTR tetramer. These data indicate that α- and β-santalol are the strong natural therapeutic intervention against TTR-associated amyloid diseases.
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Affiliation(s)
- Amirthalingam Mohankumar
- PAK Research Center, University of the Ryukyus, Okinawa, Japan
- Department of Zoology, Bharathiar University, Coimbatore, India
- *Correspondence: Amirthalingam Mohankumar, ; Shinkichi Tawata, ; Palanisamy Sundararaj,
| | - Duraisamy Kalaiselvi
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
| | | | | | | | - Rahul Suresh
- International Research Center of Spectroscopy and Quantum Chemistry—IRC SQC, Siberian Federal University, Krasnoyarsk, Russia
| | - Shinkichi Tawata
- PAK Research Center, University of the Ryukyus, Okinawa, Japan
- *Correspondence: Amirthalingam Mohankumar, ; Shinkichi Tawata, ; Palanisamy Sundararaj,
| | - Palanisamy Sundararaj
- Department of Zoology, Bharathiar University, Coimbatore, India
- *Correspondence: Amirthalingam Mohankumar, ; Shinkichi Tawata, ; Palanisamy Sundararaj,
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Faravelli G, Mondani V, Mangione PP, Raimondi S, Marchese L, Lavatelli F, Stoppini M, Corazza A, Canetti D, Verona G, Obici L, Taylor GW, Gillmore JD, Giorgetti S, Bellotti V. Amyloid Formation by Globular Proteins: The Need to Narrow the Gap Between in Vitro and in Vivo Mechanisms. Front Mol Biosci 2022; 9:830006. [PMID: 35237660 PMCID: PMC8883118 DOI: 10.3389/fmolb.2022.830006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/20/2022] [Indexed: 11/15/2022] Open
Abstract
The globular to fibrillar transition of proteins represents a key pathogenic event in the development of amyloid diseases. Although systemic amyloidoses share the common characteristic of amyloid deposition in the extracellular matrix, they are clinically heterogeneous as the affected organs may vary. The observation that precursors of amyloid fibrils derived from circulating globular plasma proteins led to huge efforts in trying to elucidate the structural events determining the protein metamorphosis from their globular to fibrillar state. Whereas the process of metamorphosis has inspired poets and writers from Ovid to Kafka, protein metamorphism is a more recent concept. It is an ideal metaphor in biochemistry for studying the protein folding paradigm and investigating determinants of folding dynamics. Although we have learned how to transform both normal and pathogenic globular proteins into fibrillar polymers in vitro, the events occurring in vivo, are far more complex and yet to be explained. A major gap still exists between in vivo and in vitro models of fibrillogenesis as the biological complexity of the disease in living organisms cannot be reproduced at the same extent in the test tube. Reviewing the major scientific attempts to monitor the amyloidogenic metamorphosis of globular proteins in systems of increasing complexity, from cell culture to human tissues, may help to bridge the gap between the experimental models and the actual pathological events in patients.
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Affiliation(s)
- Giulia Faravelli
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Valentina Mondani
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - P. Patrizia Mangione
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Sara Raimondi
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Loredana Marchese
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Francesca Lavatelli
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Monica Stoppini
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Alessandra Corazza
- Department of Medicine (DAME), University of Udine, Udine, Italy
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
| | - Diana Canetti
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Guglielmo Verona
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Laura Obici
- Amyloidosis Research and Treatment Centre, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Graham W. Taylor
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Julian D. Gillmore
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, United Kingdom
| | - Sofia Giorgetti
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
| | - Vittorio Bellotti
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
- Scientific Direction, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- *Correspondence: Vittorio Bellotti, ,
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Huang CW, Liao WR, How CM, Yen PL, Wei CC. Chronic exposure of zearalenone inhibits antioxidant defense and results in aging-related defects associated with DAF-16/FOXO in Caenorhabditis elegans. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 285:117233. [PMID: 33940230 DOI: 10.1016/j.envpol.2021.117233] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Zearalenone (ZEN), a mycotoxin with endocrine disruptive activity and oxidative stress generating ability, has been a worldwide environmental concern for its prevalence and persistency. However, the long-term effect of ZEN on aging process is not fully elucidated. Thus, the present study applied the Caenorhabditis elegans model to investigate the aging-related toxic effect and possible underlying mechanisms under prolonged and chronic ZEN exposure. Our results showed that locomotive behaviors significantly decreased in ZEN (0.3, 1.25, 5, 10, 50 μM) treated C. elegans. In addition, lifespan and aging markers including pharyngeal pumping and lipofuscin were also adversely affected by ZEN (50 μM). Furthermore, ZEN (50 μM) increased ROS level and downregulated antioxidant genes resulted from inhibition of nuclear DAF-16 translocation in aged C. elegans, which was further confirmed by more significant aging-related defects observed in ZEN treated daf-16 mutant. In conclusion, our findings suggest that the aging process and aging-related decline were induced by long-term exposure of ZEN in C. elegans, which is associated with oxidative stress, inhibition of antioxidant defense, and transcription factor DAF-16/FOXO.
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Affiliation(s)
- Chi-Wei Huang
- Institute of Food Safety and Health, National Taiwan University, No. 17, Xuzhou Rd., Taipei, 100, Taiwan
| | - Wan-Ru Liao
- Institute of Food Safety and Health, National Taiwan University, No. 17, Xuzhou Rd., Taipei, 100, Taiwan
| | - Chun Ming How
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 106, Taiwan
| | - Pei-Ling Yen
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 106, Taiwan
| | - Chia-Cheng Wei
- Institute of Food Safety and Health, National Taiwan University, No. 17, Xuzhou Rd., Taipei, 100, Taiwan; Department of Public Health, National Taiwan University, No. 17, Xuzhou Rd., Taipei, 100, Taiwan.
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The antimicrobial peptide Brevinin-2ISb enhances the innate immune response against methicillin-resistant Staphylococcus aureus by activating DAF-2/DAF-16 signaling in Caenorhabditis elegans, as determined by in vivo imaging. JOURNAL OF BIO-X RESEARCH 2020. [DOI: 10.1097/jbr.0000000000000079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Bulterijs S, Braeckman BP. Phenotypic Screening in C. elegans as a Tool for the Discovery of New Geroprotective Drugs. Pharmaceuticals (Basel) 2020; 13:E164. [PMID: 32722365 PMCID: PMC7463874 DOI: 10.3390/ph13080164] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 01/10/2023] Open
Abstract
Population aging is one of the largest challenges of the 21st century. As more people live to advanced ages, the prevalence of age-related diseases and disabilities will increase placing an ever larger burden on our healthcare system. A potential solution to this conundrum is to develop treatments that prevent, delay or reduce the severity of age-related diseases by decreasing the rate of the aging process. This ambition has been accomplished in model organisms through dietary, genetic and pharmacological interventions. The pharmacological approaches hold the greatest opportunity for successful translation to the clinic. The discovery of such pharmacological interventions in aging requires high-throughput screening strategies. However, the majority of screens performed for geroprotective drugs in C. elegans so far are rather low throughput. Therefore, the development of high-throughput screening strategies is of utmost importance.
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Affiliation(s)
- Sven Bulterijs
- Laboratory of Aging Physiology and Molecular Evolution, Department of Biology, Ghent University, 9000 Ghent, Belgium
| | - Bart P. Braeckman
- Laboratory of Aging Physiology and Molecular Evolution, Department of Biology, Ghent University, 9000 Ghent, Belgium
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Ueda M, Okada M, Mizuguchi M, Kluve-Beckerman B, Kanenawa K, Isoguchi A, Misumi Y, Tasaki M, Ueda A, Kanai A, Sasaki R, Masuda T, Inoue Y, Nomura T, Shinriki S, Shuto T, Kai H, Yamashita T, Matsui H, Benson MD, Ando Y. A cell-based high-throughput screening method to directly examine transthyretin amyloid fibril formation at neutral pH. J Biol Chem 2019; 294:11259-11275. [PMID: 31167790 DOI: 10.1074/jbc.ra119.007851] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/31/2019] [Indexed: 12/12/2022] Open
Abstract
Transthyretin (TTR) is a major amyloidogenic protein associated with hereditary (ATTRm) and nonhereditary (ATTRwt) intractable systemic transthyretin amyloidosis. The pathological mechanisms of ATTR-associated amyloid fibril formation are incompletely understood, and there is a need for identifying compounds that target ATTR. C-terminal TTR fragments are often present in amyloid-laden tissues of most patients with ATTR amyloidosis, and on the basis of in vitro studies, these fragments have been proposed to play important roles in amyloid formation. Here, we found that experimentally-formed aggregates of full-length TTR are cleaved into C-terminal fragments, which were also identified in patients' amyloid-laden tissues and in SH-SY5Y neuronal and U87MG glial cells. We observed that a 5-kDa C-terminal fragment of TTR, TTR81-127, is highly amyloidogenic in vitro, even at neutral pH. This fragment formed amyloid deposits and induced apoptosis and inflammatory gene expression also in cultured cells. Using the highly amyloidogenic TTR81-127 fragment, we developed a cell-based high-throughput screening method to discover compounds that disrupt TTR amyloid fibrils. Screening a library of 1280 off-patent drugs, we identified two candidate repositioning drugs, pyrvinium pamoate and apomorphine hydrochloride. Both drugs disrupted patient-derived TTR amyloid fibrils ex vivo, and pyrvinium pamoate also stabilized the tetrameric structure of TTR ex vivo in patient plasma. We conclude that our TTR81-127-based screening method is very useful for discovering therapeutic drugs that directly disrupt amyloid fibrils. We propose that repositioning pyrvinium pamoate and apomorphine hydrochloride as TTR amyloid-disrupting agents may enable evaluation of their clinical utility for managing ATTR amyloidosis.
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Affiliation(s)
- Mitsuharu Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Masamitsu Okada
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Mineyuki Mizuguchi
- Laboratory of Structural Biology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Barbara Kluve-Beckerman
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Kyosuke Kanenawa
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Aito Isoguchi
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Yohei Misumi
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Masayoshi Tasaki
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan.,Department of Morphological and Physiological Sciences, Graduate School of Health Sciences, Kumamoto University, Kumamoto 862-0976, Japan
| | - Akihiko Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Akinori Kanai
- Department of Molecular Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8553, Japan
| | - Ryoko Sasaki
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Teruaki Masuda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Yasuteru Inoue
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Toshiya Nomura
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Satoru Shinriki
- Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Tsuyoshi Shuto
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Hirofumi Kai
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Taro Yamashita
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Hirotaka Matsui
- Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Merrill D Benson
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
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Mojumder S, Sawamura R, Murayama Y, Ogura T, Yamanaka K. Functional characterization of UBXN-6, a C-terminal cofactor of CDC-48, in C. elegans. Biochem Biophys Res Commun 2019; 509:462-468. [PMID: 30595383 DOI: 10.1016/j.bbrc.2018.12.155] [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: 12/07/2018] [Accepted: 12/21/2018] [Indexed: 11/26/2022]
Abstract
CDC-48 is a AAA (ATPases associated with diverse cellular activities) chaperone and participates in a wide range of cellular activities. Its functional diversity is determined by differential binding of a variety of cofactors. In this study, we analyzed the physiological role of a CDC-48 cofactor UBXN-6 in Caenorhabditis elegans. The amount of UBXN-6 was markedly increased upon starvation, but not with the treatment of tunicamycin and rapamycin. The induction upon starvation is a unique characteristic for UBXN-6 among C-terminal cofactors of CDC-48. During starvation, lysosomal activity is triggered for rapid clearance of cellular materials. We observed the lysosomal activity by monitoring GLO-1::GFP, a marker for lysosome-related organelles. We found that more puncta of GLO-1::GFP were observed in the ubxn-6 deletion mutant after 12 h starvation compared with the wild-type strain. Taken together, we propose that UBXN-6 is involved in clearance of cellular materials upon starvation in C. elegans.
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Affiliation(s)
- Suman Mojumder
- Department of Molecular Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan; Program for Leading Graduate Schools "HIGO Program", Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Rie Sawamura
- Department of Molecular Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan
| | - Yuki Murayama
- Department of Molecular Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan
| | - Teru Ogura
- Department of Molecular Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan; Program for Leading Graduate Schools "HIGO Program", Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Kunitoshi Yamanaka
- Department of Molecular Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan.
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