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Martínez-Herrera M, Figueroa-Gerstenmaier S, López-Camacho PY, Millan-Pacheco C, Balderas-Altamirano MA, Mendoza-Franco G, García-Sierra F, Zavala-Ocampo LM, Basurto-Islas G. Multiadducts of C60 Modulate Amyloid-β Fibrillation with Dual Acetylcholinesterase Inhibition and Antioxidant Properties: In Vitro and In Silico Studies. J Alzheimers Dis 2022; 87:741-759. [DOI: 10.3233/jad-215412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Background: Amyloid-β (Aβ) fibrils induce cognitive impairment and neuronal loss, leading to onset of Alzheimer’s disease (AD). The inhibition of Aβ aggregation has been proposed as a therapeutic strategy for AD. Pristine C60 has shown the capacity to interact with the Aβ peptide and interfere with fibril formation but induces significant toxic effects in vitro and in vivo. Objective: To evaluate the potential of a series of C60 multiadducts to inhibit the Aβ fibrillization. Methods: A series of C60 multiadducts with four to six diethyl malonyl and their corresponding disodium-malonyl substituents were synthesized as individual isomers. Their potential on Aβ fibrillization inhibition was evaluated in vitro, in cellulo, and silico. Antioxidant activity, acetylcholinesterase inhibition capacity, and toxicity were assessed in vitro. Results: The multiadducts modulate Aβ fibrils formation without inducing cell toxicity, and that the number and polarity of the substituents play a significant role in the adducts efficacy to modulate Aβ aggregation. The molecular mechanism of fullerene-Aβ interaction and modulation was identified. Furthermore, the fullerene derivatives exhibited antioxidant capacity and reduction of acetylcholinesterase activity. Conclusion: Multiadducts of C60 are novel multi-target-directed ligand molecules that could hold considerable promise as the starting point for the development of AD therapies.
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Affiliation(s)
- Melchor Martínez-Herrera
- Departamento de Ciencias Naturales e Ingeniería, Universidad Autónoma Metropolitana, Cuajimalpa, Ciudad de México, México
| | | | - Perla Y. López-Camacho
- Departamento de Ciencias Naturales e Ingeniería, Universidad Autónoma Metropolitana, Cuajimalpa, Ciudad de México, México
| | - Cesar Millan-Pacheco
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | | | - Graciela Mendoza-Franco
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México
| | - Franciscos García-Sierra
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, México
| | - Lizeth M. Zavala-Ocampo
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Cuajimalpa, Ciudad de México, México
| | - Gustavo Basurto-Islas
- División de Ciencias e Ingenierías, Universidad de Guanajuato, Campus León, León, Gto., Mexico
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Sawaguchi S, Suzuki R, Oizumi H, Ohbuchi K, Mizoguchi K, Yamamoto M, Miyamoto Y, Yamauchi J. Hypomyelinating Leukodystrophy 8 (HLD8)-Associated Mutation of POLR3B Leads to Defective Oligodendroglial Morphological Differentiation Whose Effect Is Reversed by Ibuprofen. Neurol Int 2022; 14:212-244. [PMID: 35225888 PMCID: PMC8884015 DOI: 10.3390/neurolint14010018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/03/2022] [Accepted: 02/14/2022] [Indexed: 11/16/2022] Open
Abstract
POLR3B and POLR3A are the major subunits of RNA polymerase III, which synthesizes non-coding RNAs such as tRNAs and rRNAs. Nucleotide mutations of the RNA polymerase 3 subunit b (polr3b) gene are responsible for hypomyelinating leukodystrophy 8 (HLD8), which is an autosomal recessive oligodendroglial cell disease. Despite the important association between POLR3B mutation and HLD8, it remains unclear how mutated POLR3B proteins cause oligodendroglial cell abnormalities. Herein, we show that a severe HLD8-associated nonsense mutation (Arg550-to-Ter (R550X)) primarily localizes POLR3B proteins as protein aggregates into lysosomes in the FBD-102b cell line as an oligodendroglial precursor cell model. Conversely, wild type POLR3B proteins were not localized in lysosomes. Additionally, the expression of proteins with the R550X mutation in cells decreased lysosome-related signaling through the mechanistic target of rapamycin (mTOR). Cells harboring the mutant constructs did not exhibit oligodendroglial cell differentiated phenotypes, which have widespread membranes that extend from their cell body. However, cells harboring the wild type constructs exhibited differentiated phenotypes. Ibuprofen, which is a non-steroidal anti-inflammatory drug (NSAID), improved the defects in their differentiation phenotypes and signaling through mTOR. These results indicate that the HLD8-associated POLR3B proteins with the R550X mutation are localized in lysosomes, decrease mTOR signaling, and inhibit oligodendroglial cell morphological differentiation, and ibuprofen improves these cellular pathological effects. These findings may reveal some of the molecular and cellular pathological mechanisms underlying HLD8 and their amelioration.
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Affiliation(s)
- Sui Sawaguchi
- Laboratory of Molecular Neurology, Tokyo University of Pharmacy and Life Sciences, Hachioji 192-0392, Japan; (S.S.); (R.S.); (Y.M.)
| | - Rimi Suzuki
- Laboratory of Molecular Neurology, Tokyo University of Pharmacy and Life Sciences, Hachioji 192-0392, Japan; (S.S.); (R.S.); (Y.M.)
| | - Hiroaki Oizumi
- Tsumura Research Laboratories, Tsumura & Co., Inashiki 200-1192, Japan; (H.O.); (K.O.); (K.M.); (M.Y.)
| | - Katsuya Ohbuchi
- Tsumura Research Laboratories, Tsumura & Co., Inashiki 200-1192, Japan; (H.O.); (K.O.); (K.M.); (M.Y.)
| | - Kazushige Mizoguchi
- Tsumura Research Laboratories, Tsumura & Co., Inashiki 200-1192, Japan; (H.O.); (K.O.); (K.M.); (M.Y.)
| | - Masahiro Yamamoto
- Tsumura Research Laboratories, Tsumura & Co., Inashiki 200-1192, Japan; (H.O.); (K.O.); (K.M.); (M.Y.)
| | - Yuki Miyamoto
- Laboratory of Molecular Neurology, Tokyo University of Pharmacy and Life Sciences, Hachioji 192-0392, Japan; (S.S.); (R.S.); (Y.M.)
- Department of Pharmacology, National Research Institute for Child Health and Development, Setagaya 157-8535, Japan
| | - Junji Yamauchi
- Laboratory of Molecular Neurology, Tokyo University of Pharmacy and Life Sciences, Hachioji 192-0392, Japan; (S.S.); (R.S.); (Y.M.)
- Department of Pharmacology, National Research Institute for Child Health and Development, Setagaya 157-8535, Japan
- Correspondence: ; Tel.: +81-42-676-7164; Fax: +81-42-676-8841
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Tecalco-Cruz AC, Pedraza-Chaverri J, Briones-Herrera A, Cruz-Ramos E, López-Canovas L, Zepeda-Cervantes J. Protein degradation-associated mechanisms that are affected in Alzheimer´s disease. Mol Cell Biochem 2022; 477:915-925. [PMID: 35083609 DOI: 10.1007/s11010-021-04334-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 12/15/2021] [Indexed: 12/28/2022]
Abstract
Alzheimer's disease (AD) is the most common type of dementia associated with age-related neurodegeneration. Alteration of several molecular mechanisms has been correlated with the progression of AD. In recent years, dysregulation of proteostasis-associated pathways has emerged as a potential risk factor for neurodegenerative diseases. This review investigated the ubiquitin-proteasome system, lysosome-associated degradation, endoplasmic-reticulum-associated degradation, and the formation of advanced glycation end products. These pathways involved in proteostasis have been reported to be altered in AD, suggesting that their study may be critical for identifying new biomarkers and target molecules for AD.
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Affiliation(s)
- Angeles C Tecalco-Cruz
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México (UACM), Apdo. Postal 03100, Ciudad de México, Mexico.
| | - José Pedraza-Chaverri
- Departamento de Biología. Facultad de Química, Universidad Nacional Autónoma de México, Apdo. Postal 04510, Ciudad de México, Mexico
| | - Alfredo Briones-Herrera
- Departamento de Biología. Facultad de Química, Universidad Nacional Autónoma de México, Apdo. Postal 04510, Ciudad de México, Mexico
| | - Eduardo Cruz-Ramos
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México (UACM), Apdo. Postal 03100, Ciudad de México, Mexico
| | - Lilia López-Canovas
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México (UACM), Apdo. Postal 03100, Ciudad de México, Mexico
| | - Jesús Zepeda-Cervantes
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Apdo. Postal 04510, Ciudad de México, Mexico
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Vinton J, Aninweze A, Birgbauer E. Ibuprofen does not inhibit RhoA-mediated growth cone collapse of embryonic chicken retinal axons by LPA. Exp Brain Res 2021; 239:2969-2977. [PMID: 34322723 DOI: 10.1007/s00221-021-06172-y] [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: 05/14/2020] [Accepted: 05/15/2021] [Indexed: 11/28/2022]
Abstract
Lysophosphatidic acid (LPA) is a bioactive lysophospholipid that causes neuronal growth cones to collapse and neurites to retract through a RhoA-ROCK mediated pathway. It has been reported that the NSAID ibuprofen improves regeneration after spinal cord injury through a mechanism of inhibiting RhoA. This leads to the hypothesis that ibuprofen should block LPA-mediated growth cone collapse. We tested this hypothesis by treating embryonic chick retinal neurons with ibuprofen followed by LPA. Retinal growth cones collapsed with LPA in the presence of ibuprofen similar to control; however, growth cone collapse was effectively blocked by a ROCK inhibitor. Thus, our results do not support the designation of ibuprofen as a direct RhoA inhibitor.
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Affiliation(s)
- James Vinton
- Department of Biology, Winthrop University, Rock Hill, SC, 29733, USA
| | - Adaeze Aninweze
- Department of Biology, Winthrop University, Rock Hill, SC, 29733, USA
| | - Eric Birgbauer
- Department of Biology, Winthrop University, Rock Hill, SC, 29733, USA.
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Guiler W, Koehler A, Boykin C, Lu Q. Pharmacological Modulators of Small GTPases of Rho Family in Neurodegenerative Diseases. Front Cell Neurosci 2021; 15:661612. [PMID: 34054432 PMCID: PMC8149604 DOI: 10.3389/fncel.2021.661612] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/08/2021] [Indexed: 12/22/2022] Open
Abstract
Classical Rho GTPases, including RhoA, Rac1, and Cdc42, are members of the Ras small GTPase superfamily and play essential roles in a variety of cellular functions. Rho GTPase signaling can be turned on and off by specific GEFs and GAPs, respectively. These features empower Rho GTPases and their upstream and downstream modulators as targets for scientific research and therapeutic intervention. Specifically, significant therapeutic potential exists for targeting Rho GTPases in neurodegenerative diseases due to their widespread cellular activity and alterations in neural tissues. This study will explore the roles of Rho GTPases in neurodegenerative diseases with focus on the applications of pharmacological modulators in recent discoveries. There have been exciting developments of small molecules, nonsteroidal anti-inflammatory drugs (NSAIDs), and natural products and toxins for each classical Rho GTPase category. A brief overview of each category followed by examples in their applications will be provided. The literature on their roles in various diseases [e.g., Alzheimer's disease (AD), Parkinson's disease (PD), Amyotrophic lateral sclerosis (ALS), Frontotemporal dementia (FTD), and Multiple sclerosis (MS)] highlights the unique and broad implications targeting Rho GTPases for potential therapeutic intervention. Clearly, there is increasing knowledge of therapeutic promise from the discovery of pharmacological modulators of Rho GTPases for managing and treating these conditions. The progress is also accompanied by the recognition of complex Rho GTPase modulation where targeting its signaling can improve some aspects of pathogenesis while exacerbating others in the same disease model. Future directions should emphasize the importance of elucidating how different Rho GTPases work in concert and how they produce such widespread yet different cellular responses during neurodegenerative disease progression.
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Affiliation(s)
| | | | | | - Qun Lu
- Department of Anatomy and Cell Biology, The Harriet and John Wooten Laboratory for Alzheimer’s and Neurogenerative Diseases Research, Brody School of Medicine, East Carolina University, Greenville, NC, United States
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Amyloid Aggregates of Smooth-Muscle Titin Impair Cell Adhesion. Int J Mol Sci 2021; 22:ijms22094579. [PMID: 33925514 PMCID: PMC8123791 DOI: 10.3390/ijms22094579] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/21/2021] [Accepted: 04/24/2021] [Indexed: 11/17/2022] Open
Abstract
Various amyloid aggregates, in particular, aggregates of amyloid β-proteins, demonstrate in vitro and in vivo cytotoxic effects associated with impairment of cell adhesion. We investigated the effect of amyloid aggregates of smooth-muscle titin on smooth-muscle-cell cultures. The aggregates were shown to impair cell adhesion, which was accompanied by disorganization of the actin cytoskeleton, formation of filopodia, lamellipodia, and stress fibers. Cells died after a 72-h contact with the amyloid aggregates. To understand the causes of impairment, we studied the effect of the microtopology of a titin-amyloid-aggregate-coated surface on fibroblast adhesion by atomic force microscopy. The calculated surface roughness values varied from 2.7 to 4.9 nm, which can be a cause of highly antiadhesive properties of this surface. As all amyloids have the similar structure and properties, it is quite likely that the antiadhesive effect is also intrinsic to amyloid aggregates of other proteins. These results are important for understanding the mechanisms of the negative effect of amyloids on cell adhesion.
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Husna Ibrahim N, Yahaya MF, Mohamed W, Teoh SL, Hui CK, Kumar J. Pharmacotherapy of Alzheimer's Disease: Seeking Clarity in a Time of Uncertainty. Front Pharmacol 2020; 11:261. [PMID: 32265696 PMCID: PMC7105678 DOI: 10.3389/fphar.2020.00261] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 02/24/2020] [Indexed: 12/12/2022] Open
Abstract
Alzheimer's disease (AD) is recognized as a major health hazard that mostly affects people older than 60 years. AD is one of the biggest medical, economic, and social concerns to patients and their caregivers. AD was ranked as the 5th leading cause of global deaths in 2016 by the World Health Organization (WHO). Many drugs targeting the production, aggregation, and clearance of Aβ plaques failed to give any conclusive clinical outcomes. This mainly stems from the fact that AD is not a disease attributed to a single-gene mutation. Two hallmarks of AD, Aβ plaques and neurofibrillary tangles (NFTs), can simultaneously induce other AD etiologies where every pathway is a loop of consequential events. Therefore, the focus of recent AD research has shifted to exploring other etiologies, such as neuroinflammation and central hyperexcitability. Neuroinflammation results from the hyperactivation of microglia and astrocytes that release pro-inflammatory cytokines due to the neurological insults caused by Aβ plaques and NFTs, eventually leading to synaptic dysfunction and neuronal death. This review will report the failures and side effects of many anti-Aβ drugs. In addition, emerging treatments targeting neuroinflammation in AD, such as nonsteroidal anti-inflammatory drugs (NSAIDs) and receptor-interacting serine/threonine protein kinase 1 (RIPK1), that restore calcium dyshomeostasis and microglia physiological function in clearing Aβ plaques, respectively, will be deliberately discussed. Other novel pharmacotherapy strategies in treating AD, including disease-modifying agents (DMTs), repurposing of medications used to treat non-AD illnesses, and multi target-directed ligands (MTDLs) are also reviewed. These approaches open new doors to the development of AD therapy, especially combination therapy that can cater for several targets simultaneously, hence effectively slowing or stopping AD.
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Affiliation(s)
- Nurul Husna Ibrahim
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Mohamad Fairuz Yahaya
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Wael Mohamed
- Basic Medical Science Department, Kulliyyah of Medicine, International Islamic University Malaysia, Kuantan, Malaysia
- Faculty of Medicine, Department of Clinical Pharmacology, Menoufia University, Shebin El-Kom, Egypt
| | - Seong Lin Teoh
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Chua Kien Hui
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
- Glycofood Sdn Bhd, Selangor, Malaysia
| | - Jaya Kumar
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
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Li R, Song X, Li G, Hu Z, Sun L, Chen C, Yang L. Ibuprofen attenuates interleukin-1β-induced inflammation and actin reorganization via modulation of RhoA signaling in rabbit chondrocytes. Acta Biochim Biophys Sin (Shanghai) 2019; 51:1026-1033. [PMID: 31553428 DOI: 10.1093/abbs/gmz101] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Indexed: 01/11/2023] Open
Abstract
Ibuprofen, a medication in the nonsteroidal anti-inflammatory drug class, is widely used for treating inflammatory diseases such as osteoarthritis. It has been shown in recent years that ibuprofen has a strong effect on Ras homolog gene family, member A (RhoA) inhibition in multiple cell types. Our previous finding also demonstrated that interleukin-1β (IL-1β) increases filamentous actin (F-actin) of chondrocytes via RhoA pathway. Therefore, we hypothesized that ibuprofen may suppress the IL-1β-induced F-actin upregulation in chondrocytes by inhibiting RhoA pathway. To this end, in this study, articular chondrocytes from New Zealand White rabbits were pretreated with 500 μM ibuprofen for 2 h, then with 10 ng/ml IL-1β for 24 h. Results showed that pretreatment with ibuprofen inhibited the IL-1β-induced nitric oxide (NO) and prostaglandin E2 (PGE2) production, protected the chondrocyte phenotype from IL-1β stimulation, and inhibited the IL-1β-induced actin remodeling via RhoA signaling modulation. In conclusion, ibuprofen showed not only anti-inflammatory function, but also RhoA inhibition in articular chondrocytes.
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Affiliation(s)
- Rui Li
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Xiongbo Song
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Gaoming Li
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, Laboratory of Molecular Developmental Biology, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Zhen Hu
- Gastroenterology Department, Zigong First People’s Hospital, Zigong 643000, China
| | - Li Sun
- Department of Orthopedics, Guizhou Provincial People’s Hospital, Guiyang 550002, China
| | - Cheng Chen
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Liu Yang
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
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