1
|
Shiramasa Y, Yamamoto R, Kashiwagi N, Sasaki F, Imai S, Ike M, Kitazawa S, Kameda T, Kitahara R. An aberrant fused in sarcoma liquid droplet of amyotrophic lateral sclerosis pathological variant, R495X, accelerates liquid-solid phase transition. Sci Rep 2024; 14:8914. [PMID: 38632300 PMCID: PMC11024109 DOI: 10.1038/s41598-024-59604-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/12/2024] [Indexed: 04/19/2024] Open
Abstract
Intracellular aggregation of fused in sarcoma (FUS) is associated with the pathogenesis of familial amyotrophic lateral sclerosis (ALS). Under stress, FUS forms liquid droplets via liquid-liquid phase separation (LLPS). Two types of wild-type FUS LLPS exist in equilibrium: low-pressure LLPS (LP-LLPS) and high-pressure LLPS (HP-LLPS); the former dominates below 2 kbar and the latter over 2 kbar. Although several disease-type FUS variants have been identified, the molecular mechanism underlying accelerated cytoplasmic granule formation in ALS patients remains poorly understood. Herein, we report the reversible formation of the two LLPS states and the irreversible liquid-solid transition, namely droplet aging, of the ALS patient-type FUS variant R495X using fluorescence microscopy and ultraviolet-visible absorption spectroscopy combined with perturbations in pressure and temperature. Liquid-to-solid phase transition was accelerated in the HP-LLPS of R495X than in the wild-type variant; arginine slowed the aging of droplets at atmospheric conditions by inhibiting the formation of HP-LLPS more selectively compared to that of LP-LLPS. Our findings provide new insight into the mechanism by which R495X readily forms cytoplasmic aggregates. Targeting the aberrantly formed liquid droplets (the HP-LLPS state) of proteins with minimal impact on physiological functions could be a novel therapeutic strategy for LLPS-mediated protein diseases.
Collapse
Affiliation(s)
- Yutaro Shiramasa
- Graduate School of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Ryu Yamamoto
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Norika Kashiwagi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Fuka Sasaki
- Graduate School of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Sawaka Imai
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Mikihito Ike
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Soichiro Kitazawa
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Tomoshi Kameda
- Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26, Aomi, Koto-ku, Tokyo, 135-0064, Japan
| | - Ryo Kitahara
- Graduate School of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
| |
Collapse
|
2
|
Arcenegui-Troya J, Perejón A, Sánchez-Jiménez PE, Pérez-Maqueda LA. Flexible Kinetic Model Determination of Reactions in Materials under Isothermal Conditions. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1851. [PMID: 36902967 PMCID: PMC10003836 DOI: 10.3390/ma16051851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Kinetic analysis remains a powerful tool for studying a large variety of reactions, which lies at the core of material science and industry. It aims at obtaining the kinetic parameters and model that best describe a given process and using that information to make reliable predictions in a wide range of conditions. Nonetheless, kinetic analysis often relies on mathematical models derived assuming ideal conditions that are not necessarily met in real processes. The existence of nonideal conditions causes large modifications to the functional form of kinetic models. Therefore, in many cases, experimental data hardly obey any of these ideal models. In this work, we present a novel method for the analysis of integral data obtained under isothermal conditions without any type of assumption about the kinetic model. The method is valid both for processes that follow and for those that do not follow ideal kinetic models. It consists of using a general kinetic equation to find the functional form of the kinetic model via numerical integration and optimization. The procedure has been tested both with simulated data affected by nonuniform particle size and experimental data corresponding to the pyrolysis of ethylene-propylene-diene.
Collapse
Affiliation(s)
- Juan Arcenegui-Troya
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, C. Américo Vespucio no 49, 41092 Sevilla, Spain
| | - Antonio Perejón
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, C. Américo Vespucio no 49, 41092 Sevilla, Spain
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Pedro E. Sánchez-Jiménez
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, C. Américo Vespucio no 49, 41092 Sevilla, Spain
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Luis A. Pérez-Maqueda
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, C. Américo Vespucio no 49, 41092 Sevilla, Spain
| |
Collapse
|
3
|
Larouche F, Voisard F, Amouzegar K, Houlachi G, Bouchard P, Vijh A, Demopoulos GP. Kinetics, Mechanism, and Optimization Modeling of a Green LFP Delithiation Process Developed for Direct Recycling of Lithium-Ion Batteries. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- François Larouche
- Materials Engineering, McGill University, MontrealH3A 0C5, Quebec, Canada
- Centre of Excellence in Transport Electrification and Energy Storage, Hydro-Quebec, ShawiniganG9N 7N5, Quebec, Canada
| | - Frédéric Voisard
- Materials Engineering, McGill University, MontrealH3A 0C5, Quebec, Canada
- Centre of Excellence in Transport Electrification and Energy Storage, Hydro-Quebec, ShawiniganG9N 7N5, Quebec, Canada
| | - Kamyab Amouzegar
- Centre of Excellence in Transport Electrification and Energy Storage, Hydro-Quebec, ShawiniganG9N 7N5, Quebec, Canada
| | - Georges Houlachi
- Hydro-Québec’s Research Institute, Hydro-Quebec, ShawiniganG9N 7N5, Quebec, Canada
| | - Patrick Bouchard
- Centre of Excellence in Transport Electrification and Energy Storage, Hydro-Quebec, ShawiniganG9N 7N5, Quebec, Canada
| | - Ashok Vijh
- Centre of Excellence in Transport Electrification and Energy Storage, Hydro-Quebec, ShawiniganG9N 7N5, Quebec, Canada
| | | |
Collapse
|
4
|
Kitahara R, Yamazaki R, Ide F, Li S, Shiramasa Y, Sasahara N, Yoshizawa T. Pressure-Jump Kinetics of Liquid-Liquid Phase Separation: Comparison of Two Different Condensed Phases of the RNA-Binding Protein, Fused in Sarcoma. J Am Chem Soc 2021; 143:19697-19702. [PMID: 34787417 DOI: 10.1021/jacs.1c07571] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The RNA-binding protein fused in sarcoma (FUS) undergoes liquid-liquid phase separation (LLPS) both in vivo and in vitro. Self-assembled liquid droplets of FUS transform into reversible hydrogels and into more irreversible and toxic aggregates. Although LLPS can be a precursor of irreversible aggregates, a generic method to study kinetics of the formation of LLPS has not been developed. Here, we demonstrated the pressure-jump kinetics of phase transition between the 1-phase state and FUS-LLPS states observed at low pressure (<2 kbar, LP-LLPS) and high pressure (>2 kbar, HP-LLPS) using high-pressure UV/vis spectroscopy. Absorbance (turbidity) changes were reproduced repeatedly using pressure cycles. The Johnson-Mehl-Avrami-Kolmogorov theory was used to understand droplet formation occurring via nucleation and growth. The Avrami exponent n, representing the dimensionality of growing droplets, and the reaction rate constant k were calculated. The HP-LLPS formation rate was ∼2-fold slower than that of LP-LLPS. The Avrami exponent obtained for both LLPS states could be explained by diffusion-limited growth. Nucleation and growth rates decreased during LP-LLPS formation (n = 0.51), and the nucleation rate decreased with a constant growth rate in HP-LLPS formation (n = 1.4). The HP-LLPS vanishing rate was ∼20-fold slower than that of LP-LLPS. This difference in vanishing rates indicates a stronger intermolecular interaction in HP-LLPS than in LP-LLPS, which might promote transformation into irreversible aggregates in the droplets. Further, direct transition from HP-LLPS to LP-LLPS was observed. This indicates that interconversion between LP-LLPS and HP-LLPS occurs in equilibrium. Formation of reversible liquid droplets, followed by phase transition into another liquid phase, could thus be part of the physiological maturation process of FUS-LLPS.
Collapse
Affiliation(s)
- Ryo Kitahara
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Ryota Yamazaki
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Fumika Ide
- College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Shujie Li
- Graduate School of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Yutaro Shiramasa
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Naoya Sasahara
- College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Takuya Yoshizawa
- College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| |
Collapse
|
5
|
Wong SN, Chan SWS, Peng X, Xuan B, Lee HW, Tong HHY, Chow SF. Effects of the Glass-Forming Ability and Annealing Conditions on Cocrystallization Behaviors via Rapid Solvent Removal: A Case Study of Voriconazole. Pharmaceutics 2020; 12:E1209. [PMID: 33327381 PMCID: PMC7764899 DOI: 10.3390/pharmaceutics12121209] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 01/16/2023] Open
Abstract
The kinetic entrapment of molecules in an amorphous phase is a common obstacle to cocrystal screening using rapid solvent removal, especially for drugs with a moderate or high glass-forming ability (GFA). The aim of this study was to elucidate the effects of the coformer's GFA and annealing conditions on the nature of amorphous phase transformation to the cocrystal counterpart. Attempts were made to cocrystallize voriconazole (VRC) with four structural analogues, namely fumaric acid (FUM), tartaric acid (TAR), malic acid (MAL), and maleic acid (MAE). The overall GFA of VRC binary systems increased with decreasing glass transition temperatures (Tgs) of these diacids, which appeared as a critical parameter for predicting the cocrystallization propensity such that a high-Tg coformer is more desirable. A new 1:1 VRC-TAR cocrystal was successfully produced via a supercooled-mediated re-cocrystallization process, and characterized by PXRD, DSC, and FTIR. The cocrystal purity against the annealing temperature displayed a bell-shaped curve, with a threshold at 40 °C. The isothermal phase purity improved with annealing and adhered to the Kolmogorov-Johnson-Mehl-Avrami kinetics. The superior dissolution behavior of the VRC-TAR cocrystal could minimize VRC precipitation upon gastric emptying. This study offers a simple but useful guide for efficient cocrystal screening based on the Tg of structurally similar coformers, annealing temperature, and time.
Collapse
Affiliation(s)
- Si Nga Wong
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Susan Wing Sze Chan
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Xuexin Peng
- School of Pharmacy, University College London, London WC1N 1AX, UK;
| | - Bianfei Xuan
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Hok Wai Lee
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Henry H. Y. Tong
- School of Health Sciences and Sports, Macao Polytechnic Institute, Macao, China;
| | - Shing Fung Chow
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| |
Collapse
|