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Porat-Dahlerbruch G, Sergeyev IV, Quinn CM, Struppe J, Banks D, Dahlheim C, Johnson D, Murphy D, Ilott A, Abraham A, Polenova T. Spatial Organization of Lipid Nanoparticle siRNA Delivery Systems Revealed by an Integrated Magnetic Resonance Approach. SMALL METHODS 2024:e2400622. [PMID: 39021326 DOI: 10.1002/smtd.202400622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Indexed: 07/20/2024]
Abstract
Lipid nanoparticles (LNPs) are increasingly finding applications in targeted drug delivery, including for subcutaneous, intravenous, inhalation, and vaccine administration. While a variety of microscopy techniques are widely used for LNP characterization, their resolution does not allow for characterization of the spatial organization of different components, such as the excipients, targeting agents, or even the active ingredient. Herein, an approach is presented to probe the spatial organization of individual constituent groups of LNPs used for siRNA-based drug delivery, currently in clinical trials, by multinuclear solid-state magic-angle-spinning nuclear magnetic resonance (MAS NMR) spectroscopy. Dynamic nuclear polarization is exploited (DNP) for sensitivity enhancement, together with judicious 2H labeing, to detect functionally important LNP constituents, the siRNA and the targeting agent (<1-2 w/v%), respectively, and achieve a structural model of the LNP locating the siRNA in the core, the targeting agent below the surface, and the sugars above the lipid bilayer at the surface. The integrated approach presented here is applicable for structural analysis of LNPs and can be extended more generally to other multi-component biological formulations.
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Affiliation(s)
- Gal Porat-Dahlerbruch
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Ivan V Sergeyev
- Bristol Myers Squibb, Drug Product Development, New Brunswick, NJ, 08901, USA
| | - Caitlin M Quinn
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Jochem Struppe
- Bruker Biospin Corporation, 15 Fortune Drive, Billerica, MA, 01821, USA
| | - Daniel Banks
- Bruker Biospin Corporation, 15 Fortune Drive, Billerica, MA, 01821, USA
| | - Charles Dahlheim
- Bristol Myers Squibb, Drug Product Development, New Brunswick, NJ, 08901, USA
| | - Donald Johnson
- Bristol Myers Squibb, Drug Product Development, New Brunswick, NJ, 08901, USA
| | - Denette Murphy
- Bristol Myers Squibb, Drug Product Development, New Brunswick, NJ, 08901, USA
| | - Andrew Ilott
- Bristol Myers Squibb, Drug Product Development, New Brunswick, NJ, 08901, USA
| | - Anuji Abraham
- Bristol Myers Squibb, Drug Product Development, New Brunswick, NJ, 08901, USA
| | - Tatyana Polenova
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
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Bassanini I, Galli C, Ferrandi EE, Vallone F, Andolfo A, Romeo S. Perfluorinated Probes for Noncovalent Protein Recognition and Isolation. Bioconjug Chem 2020; 31:513-519. [PMID: 31927891 PMCID: PMC7993633 DOI: 10.1021/acs.bioconjchem.9b00846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Perfluorinated organic compounds (PFCs) are nontoxic, biocompatible, bioavailable, and bioorthogonal species which possess the unique ability to segregate away from both polar and nonpolar solvents producing a compact fluorophilic phase. Traditional techniques of fluorous chemical proteomics are generally applied to enrich biological samples in target protein(s) exploiting this property of PFCs to build fluorinated probes able to covalently bind to protein ensembles and being selectively extracted by fluorophilic solvents. Aiming at building a strategy able to avoid irreversible modification of the analyzed biosystem, a novel fully noncovalent probe is presented as an enabling tool for the recognition and isolation of biological protein(s). In our strategy, both the fluorophilic extraction and the biorecognition of a selected protein successfully occur via the establishment of reversible but selective interactions.
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Affiliation(s)
- Ivan Bassanini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy
| | - Corinna Galli
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy
| | - Erica E Ferrandi
- Istituto di Chimica del Riconoscimento Molecolare - Consiglio Nazionale delle Ricerche, 20131 Milano, Italy
| | - Fabiana Vallone
- ProMiFa, Protein Microsequencing Facility, Ospedale San Raffaele, 20132 Milano, Italy
| | - Annapaola Andolfo
- ProMiFa, Protein Microsequencing Facility, Ospedale San Raffaele, 20132 Milano, Italy
| | - Sergio Romeo
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy
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Tan C, Huang Y, Cai S, Chen Z. High-resolution two-dimensional 1H J-resolved MRS measurements on in vivo samples. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2019; 300:51-60. [PMID: 30711783 DOI: 10.1016/j.jmr.2019.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 12/31/2018] [Accepted: 01/22/2019] [Indexed: 06/09/2023]
Abstract
Magnetic resonance spectroscopy (MRS) provides a noninvasive tool for metabolite characterization of in vivo biological samples. Conventional MRS measurements on biological samples generally suffer from field inhomogeneity caused by intrinsic magnetic susceptibility variations inside samples. Compared to one-dimensional MRS, two-dimensional (2D) J-resolved spectroscopy enables resolving J couplings along one of the spectral dimension and benefits to metabolite identification and analyses. Intermolecular double-quantum coherences (iDQC) has been proven to be insensitive to magnetic field inhomogeneity, herein we propose a MRS approach based on iDQC evolution and optimal echo sampling scheme to achieve high-resolution 2D J-resolved measurements on biological samples. The applicability of the proposed method is evaluated with experiments on an ex vivo pig brain tissue and an in vivo rat brain tissue. Compared to conventional MRS method which is sensitive to field inhomogeneity inside investigated biological tissues, the proposed method holds immunity to this field inhomogeneity and the quality of resulting spectra may not be influenced by localized voxel size variation. The signal to noise ratio enhancement of the proposed method benefitting from the optimal echo signal sampling is verified with a solution experiment. The new method provides a promising way for high-resolution MRS measurements on biological samples. In combination with fast acquisition strategy, it may find some promising biomedical applications.
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Affiliation(s)
- Chunhua Tan
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
| | - Yuqing Huang
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China.
| | - Shuhui Cai
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China.
| | - Zhong Chen
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
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Lin L, Wei Z, Zeng Q, Yang J, Lin Y, Chen Z. Fast acquisition of high-resolution 2D NMR spectroscopy in inhomogeneous magnetic fields. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Investigation of intermolecular double-quantum off-resonance longitudinal relaxation in the tilted rotating frame. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Huang Y, Cai S, Zhang Z, Chen Z. High-resolution two-dimensional J-resolved NMR spectroscopy for biological systems. Biophys J 2014; 106:2061-70. [PMID: 24806938 PMCID: PMC4017288 DOI: 10.1016/j.bpj.2014.03.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 03/13/2014] [Accepted: 03/14/2014] [Indexed: 11/19/2022] Open
Abstract
NMR spectroscopy is a principal tool in metabolomic studies and can, in theory, yield atom-level information critical for understanding biological systems. Nevertheless, NMR investigations on biological tissues generally have to contend with field inhomogeneities originating from variations in macroscopic magnetic susceptibility; these field inhomogeneities broaden spectral lines and thereby obscure metabolite signals. The congestion in one-dimensional NMR spectra of biological tissues often leads to ambiguities in metabolite identification and quantification. We propose an NMR approach based on intermolecular double-quantum coherences to recover high-resolution two-dimensional (2D) J-resolved spectra from inhomogeneous magnetic fields, such as those created by susceptibility variations in intact biological tissues. The proposed method makes it possible to acquire high-resolution 2D J-resolved spectra on intact biological samples without recourse to time-consuming shimming procedures or the use of specialized hardware, such as magic-angle-spinning probes. Separation of chemical shifts and J couplings along two distinct dimensions is achieved, which reduces spectral crowding and increases metabolite specificity. Moreover, the apparent J coupling constants observed are magnified by a factor of 3, facilitating the accurate measurement of small J couplings, which is useful in metabolic analyses. Dramatically improved spectral resolution is demonstrated in our applications of the technique on pig brain tissues. The resulting spectra contain a wealth of chemical shift and J-coupling information that is invaluable for metabolite analyses. A spatially localized experiment applied on an intact fish (Crossocheilus siamensis) reveals the promise of the proposed method in in vivo metabolite studies. Moreover, the proposed method makes few demands on spectrometer hardware and therefore constitutes a convenient and effective manner for metabonomics study of biological systems.
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Affiliation(s)
- Yuqing Huang
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian, China
| | - Shuhui Cai
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian, China
| | - Zhiyong Zhang
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian, China
| | - Zhong Chen
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian, China.
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Huang Y, Zhang Z, Cai S, Chen Z. A novel detection scheme for high-resolution two-dimensional spin-echo correlated spectra in inhomogeneous fields. PLoS One 2014; 9:e84032. [PMID: 24392105 PMCID: PMC3879268 DOI: 10.1371/journal.pone.0084032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 11/11/2013] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Two-dimensional (2D) nuclear magnetic resonance (NMR) spectroscopy is a powerful and non-invasive tool for the analysis of molecular structures, conformations, and dynamics. However, the inhomogeneity of magnetic fields experienced by samples will destroy spectral information and hinder spectral analysis. In this study, a new pulse sequence is proposed based on the modulation of distant dipolar field to recover high-resolution 2D spin-echo correlated spectroscopy (SECSY) from inhomogeneous fields. METHOD AND MATERIAL By using the new sequence, the correlation information between coupled spins and the J coupled information with straightforward multiplet patterns can be obtained free from inhomogeneous line broadening. In addition, the new sequence is also suitable for non-J coupled spin systems. Although three-dimensional acquisition is needed, the evolution of indirect detection dimensions is carefully designed and the ultrafast acquisition scheme is utilized to improve the acquisition efficiency. A chemical solution of butyl methacrylate (C8H14O2) in DMSO (C2H6SO) in a deshimmed magnetic field was tested to demonstrate the implementation details of the new sequence. The performance of the new sequence relative to the conventional SECSY sequence was shown by using an aqueous solution of main brain metabolites in a deshimmed magnetic field. CONCLUSION The results reveal that the new sequence provides an attractive way to eliminate the inhomogeneous spectral line broadening for the spin-echo correlated spectrum and is a promising tool for the study of metabolites in metabonomics, even for the applications on in vivo and in situ high-resolution 2D NMR spectroscopy.
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Affiliation(s)
- Yuqing Huang
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, China
| | - Zhiyong Zhang
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, China
| | - Shuhui Cai
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, China
| | - Zhong Chen
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, China
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Desvaux H. Non-linear liquid-state NMR. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2013; 70:50-71. [PMID: 23540576 DOI: 10.1016/j.pnmrs.2012.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 10/31/2012] [Indexed: 06/02/2023]
Affiliation(s)
- Hervé Desvaux
- CEA, IRAMIS, SIS2M, UMR CEA/CNRS 3299, Laboratoire Structure et Dynamique par Résonance Magnétique, CEA/Saclay, Gif-sur-Yvette, France.
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Cai C, Lin Y, Cai S, Sun H, Zhong J, Chen Z. Flat pancake distant dipolar fields for enhancement of intermolecular multiple-quantum coherence signals. J Chem Phys 2012; 136:094503. [PMID: 22401448 DOI: 10.1063/1.3690110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Intermolecular multiple-quantum coherences (iMQCs) originated from distant dipolar field (DDF) possess some appealing unique properties for magnetic resonance imaging (MRI). DDF is usually induced with continuous wave (i.e., sine- or square-wave) magnetization modulation in the whole sample. In this article, a spatially localized and enhanced DDF was optimally tailored in a thin slice with an adiabatic inversion pulse. Evidence was provided to show that careful tailoring of the spatially localized DDF can generate highly efficient iMQC signals, with more than two-fold enhancement compared to the conventional sine-wave magnetization modulation method, and 1.5 times of that with the square-wave modulation under the similar condition. Theoretical predictions, simulation results, and experimental verifications agree well with each other. Practical implementation of this approach for efficient iMQC MRI was explored.
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Affiliation(s)
- Congbo Cai
- Department of Electronic Science and Communication Engineering, Fujian Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen 361005, China
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Cai C, Gao F, Cai S, Huang Y, Chen Z. Fast high-resolution 2D correlation spectroscopy in inhomogeneous fields via Hadamard intermolecular multiple quantum coherences technique. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2011; 211:162-169. [PMID: 21664159 DOI: 10.1016/j.jmr.2011.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 04/15/2011] [Accepted: 05/13/2011] [Indexed: 05/30/2023]
Abstract
Recently, a method based on intermolecular multiple quantum coherences (iMQCs) has been proposed to obtain high-resolution 2D COSY spectra in inhomogeneous fields via 3D acquisitions. However, the very long acquisition time prevents its practical application. To overcome this shortage, the Hadamard technique was applied for the iMQC method in this paper. For the new pulse sequence, the direct frequency-domain excitation is used in the first indirect detection dimension, so the 3D acquisition was replaced by an array of 2D acquisitions. The acquisition time can be reduced to 10 min. The resulting spectra retain useful structural information including chemical shifts and multiplet patterns of J coupling even when the inhomogeneous line broadening leads to overlap of neighboring diagonal resonances in the conventional COSY spectrum. The experimental results are consistent with the theoretical predictions and computer simulations. The new sequence may provide a time-efficient way for the studies of chemical solution in inhomogeneous fields.
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Affiliation(s)
- Congbo Cai
- Department of Electronic Science, Fujian Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen 361005, PR China
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