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Hassan AAA, Sovány T, Pamlényi K, Deák M, Hornok V, Csapó E, Regdon G, Csóka I, Kristó K. QbD Approach-Based Preparation and Optimization of Hydrophobic Ion-Pairing Complex of Lysozyme with Sodium Dodecyl Sulphate to Enhance Stability in Lipid-Based Carriers. Pharmaceutics 2024; 16:589. [PMID: 38794251 PMCID: PMC11125345 DOI: 10.3390/pharmaceutics16050589] [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: 03/17/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/26/2024] Open
Abstract
Hydrophobic ion pairing (HIP) complexation was found to be an efficient approach in modulating the release and enhancing the stability and encapsulation of hydrophilic macromolecules such as proteins in hydrophobic nano/microcarriers. The present work strives to develop and optimize the preparation of the HIP complex of the antimicrobial enzyme lysozyme (LYZ) with the ion-pairing agent (IPA) sodium dodecyl sulphate (SDS) relying on the quality-by-design (QbD) approach. The quality target product profile (QTPP) includes the achievement of maximal lipophilicity in a reversible manner to enable the maintenance of biological activity. The related critical quality attributes (CQAs) were defined as complexation efficacy, complex stability, enzyme recovery and activity. Three risk assessment (RA) tools were used to identify and rank the critical process parameters (CPPs) and critical material attributes (CMAs). From this assessment, the pH of the medium, LYZ:SDS molar ratio and drying conditions were determined as high-risk factors that need to be investigated. To the best of our knowledge, for the first time, electrostatic titration was used as a smart approach to determine the optimum molar ratio at different pH values. Based on the predefined CQAs, pH 8 with an LYZ/SDS molar ratio of 1:8 was found to be the optimal condition for complexation efficiency and recovery (%) of a biologically active enzyme. A cost-effective drying process based on a ventilated oven was developed, which resulted in complex qualities comparable to those obtained by the commonly used freeze-drying method. In a nutshell, the optimum conditions for the preparation of the LYZ/SDS HIP complex were efficiently facilitated by the rational application of QbD principles and the utilization of efficient electrostatic titration and ventilated oven-drying methods.
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Affiliation(s)
- Alharith A. A. Hassan
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary; (A.A.A.H.); (T.S.); (K.P.); (M.D.); (I.C.)
- Department of Pharmaceutics, Faculty of Pharmacy, University of Khartoum, Khartoum P.O. Box 1996, Sudan
| | - Tamás Sovány
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary; (A.A.A.H.); (T.S.); (K.P.); (M.D.); (I.C.)
| | - Krisztián Pamlényi
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary; (A.A.A.H.); (T.S.); (K.P.); (M.D.); (I.C.)
| | - Martin Deák
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary; (A.A.A.H.); (T.S.); (K.P.); (M.D.); (I.C.)
| | - Viktória Hornok
- Interdisciplinary Excellence Center, Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich B. Sqr. 1, H-6720 Szeged, Hungary; (V.H.); (E.C.)
| | - Edit Csapó
- Interdisciplinary Excellence Center, Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich B. Sqr. 1, H-6720 Szeged, Hungary; (V.H.); (E.C.)
- MTA-SZTE Lendület “Momentum” Noble Metal Nanostructures Research Group, University of Szeged, Rerrich B. Sqr. 1, H-6720 Szeged, Hungary
| | - Géza Regdon
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary; (A.A.A.H.); (T.S.); (K.P.); (M.D.); (I.C.)
| | - Ildikó Csóka
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary; (A.A.A.H.); (T.S.); (K.P.); (M.D.); (I.C.)
| | - Katalin Kristó
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6., H-6720 Szeged, Hungary; (A.A.A.H.); (T.S.); (K.P.); (M.D.); (I.C.)
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Pujahari SR, Purusottam RN, Mali PS, Sarkar S, Khaneja N, Vajpai N, Kumar A. Exploring the Higher Order Structure and Conformational Transitions in Insulin Microcrystalline Biopharmaceuticals by Proton-Detected Solid-State Nuclear Magnetic Resonance at Natural Abundance. Anal Chem 2024; 96:4756-4763. [PMID: 38326990 DOI: 10.1021/acs.analchem.3c04040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
The integrity of a higher order structure (HOS) is an essential requirement to ensure the efficacy, stability, and safety of protein therapeutics. Solution-state nuclear magnetic resonance (NMR) occupies a unique niche as one of the most promising methods to access atomic-level structural information on soluble biopharmaceutical formulations. Another major class of drugs is poorly soluble, such as microcrystalline suspensions, which poses significant challenges for the characterization of the active ingredient in its native state. Here, we have demonstrated a solid-state NMR method for HOS characterization of biopharmaceutical suspensions employing a selective excitation scheme under fast magic angle spinning (MAS). The applicability of the method is shown on commercial insulin suspensions at natural isotopic abundance. Selective excitation aided with proton detection and non-uniform sampling (NUS) provides improved sensitivity and resolution. The enhanced resolution enabled us to demonstrate the first experimental evidence of a phenol-escaping pathway in insulin, leading to conformational transitions to different hexameric states. This approach has the potential to serve as a valuable means for meticulously examining microcrystalline biopharmaceutical suspensions, which was previously not attainable in their native formulation states and can be seamlessly extended to other classes of biopharmaceuticals such as mAbs and other microcrystalline proteins.
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Affiliation(s)
- Soumya Ranjan Pujahari
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Bombay, Powai Mumbai 400076, India
| | - Rudra N Purusottam
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Bombay, Powai Mumbai 400076, India
| | - Pramod S Mali
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Bombay, Powai Mumbai 400076, India
| | - Sambeda Sarkar
- System and Control Engineering, Indian Institute of Technology, Bombay, Powai Mumbai 400076, India
| | - Navin Khaneja
- System and Control Engineering, Indian Institute of Technology, Bombay, Powai Mumbai 400076, India
| | - Navratna Vajpai
- Biocon Biologics Limited, Biocon SEZ, Plot No. 2 & 3, Phase IV-B.I.A, Bommasandra-Jigani Link Road, Bangalore 560099, India
| | - Ashutosh Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Bombay, Powai Mumbai 400076, India
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3
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Fleming M, Swift JA. Enhancement of Hydrate Stability through Substitutional Defects. CRYSTAL GROWTH & DESIGN 2023; 23:5860-5867. [PMID: 37547883 PMCID: PMC10401670 DOI: 10.1021/acs.cgd.3c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/10/2023] [Indexed: 08/08/2023]
Abstract
Cytosine monohydrate (CM) and anhydrate crystal forms reversibly interconvert under high temperatures or high humidity conditions. Here, we demonstrate through defect engineering the ability to expand the thermal stability range of CM through the targeted creation of quantifiable defects in low-level concentrations. Twelve different molecular dyes with a variety of core structures and charges were screened as potential dopants in CM. CM-dye phases prepared with Congo red (CR), Evans blue (EB), and Azocarmine G (AG) exhibited the highest inclusion levels (up to 1.1 wt %). In these doped isomorphous materials, each dye is presumed to substitute for 4-7 cytosine molecules within the low-rugosity (102) planes of the CM matrixes, thereby creating a quantifiable substitutional defect and an impediment to the cooperative molecular motions which enable the transformation to the anhydrate. Dehydration of materials with these engineered defects requires significantly higher temperatures and proceeds with slower kinetics compared to pure CM. The CM-dye phases also exhibit a reduction in the thermal expansion along key crystallographic axes and yield dehydration products with altered particle morphologies.
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Pujahari SR, Mali PS, Purusottam RN, Kumar A. Combined Liquid-State and Solid-State Nuclear Magnetic Resonance at Natural Abundance for Comparative Higher Order Structure Assessment in the Formulated-State of Biphasic Biopharmaceutics. Anal Chem 2023. [PMID: 37154614 DOI: 10.1021/acs.analchem.2c05485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A higher-order structure (HOS) is critical to a biopharmaceutical drug as the three-dimensional structure governs its function. Even the partial perturbation in the HOS of the drug can alter the biological efficiency and efficacy. Due to current limitations in analytical technologies, it is imperative to develop a protocol to characterize the HOS of biopharmaceuticals in the native formulated state. This becomes even more challenging for the suspension formulations where solution and solid phases co-exist. Here, we have used a combinatorial approach using liquid (1D 1H) and solid-state (13C CP MAS) NMR methodology to demonstrate the HOS in the biphasic microcrystalline suspension drug in its formulated state. The data were further assessed by principal component analysis and Mahalanobis distance (DM) calculation for quantitative assessment. This approach is sufficient to provide information regarding the protein HOS and the local dynamics of the molecule when combined with orthogonal techniques such as X-ray scattering. Our method can be an elegant tool to investigate batch-to-batch variation in the process of manufacture and storage as well as a biosimilarity comparison study for biphasic/microcrystalline suspension.
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Affiliation(s)
| | - Pramod S Mali
- Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai 400076, India
| | - Rudra N Purusottam
- Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai 400076, India
| | - Ashutosh Kumar
- Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai 400076, India
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5
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Nyande BW, Thomas KM, Takarianto AA, Lakerveld R. Control of crystal size distribution in batch protein crystallization by integrating a gapped Kenics static mixer to flexibly produce seed crystals. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Li M, Reichert P, Narasimhan C, Sorman B, Xu W, Cote A, Su Y. Investigating Crystalline Protein Suspension Formulations of Pembrolizumab from MAS NMR Spectroscopy. Mol Pharm 2022; 19:936-952. [PMID: 35107019 DOI: 10.1021/acs.molpharmaceut.1c00915] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Developing biological formulations to maintain the chemical and structural integrity of therapeutic antibodies remains a significant challenge. Monoclonal antibody (mAb) crystalline suspension formulation is a promising alternative for high concentration subcutaneous drug delivery. It demonstrates many merits compared to the solution formulation to reach a high concentration at the reduced viscosity and enhanced stability. One main challenge in drug development is the lack of high-resolution characterization of the crystallinity and stability of mAb microcrystals in the native formulations. Conventional analytical techniques often cannot evaluate structural details of mAb microcrystals in the native suspension due to the presence of visible particles, relatively small crystal size, high protein concentration, and multicomponent nature of a liquid formulation. This study demonstrates the first high-resolution characterization of mAb microcrystalline suspension using magic angle spinning (MAS) NMR spectroscopy. Crystalline suspension formulation of pembrolizumab (Keytruda, Merck & Co., Inc., Kenilworth, NJ 07033, U.S.) is utilized as a model system. Remarkably narrow 13C spectral linewidth of approximately 29 Hz suggests a high order of crystallinity and conformational homogeneity of pembrolizumab crystals. The impact of thermal stress and dehydration on the structure, dynamics, and stability of these mAb crystals in the formulation environment is evaluated. Moreover, isotopic labeling and heteronuclear 13C and 15N spectroscopies have been utilized to identify the binding of caffeine in the pembrolizumab crystal lattice, providing molecular insights into the cocrystallization of the protein and ligand. Our study provides valuable structural details for facilitating the design of crystalline suspension formulation of Keytruda and demonstrates the high potential of MAS NMR as an advanced tool for biophysical characterization of biological therapeutics.
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Affiliation(s)
- Mingyue Li
- Analytical Research and Development, Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Paul Reichert
- Discovery Chemistry, Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | | | - Bradley Sorman
- Analytical Research and Development, Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Wei Xu
- Analytical Research and Development, Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Aaron Cote
- Biologics Process Research and Development, Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Yongchao Su
- Analytical Research and Development, Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
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7
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Arakawa K, Numata K. Reconsidering the "glass transition" hypothesis of intrinsically unstructured CAHS proteins in desiccation tolerance of tardigrades. Mol Cell 2021; 81:409-410. [PMID: 33545053 DOI: 10.1016/j.molcel.2020.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 06/06/2019] [Accepted: 12/03/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Kazuharu Arakawa
- Institute for Advanced Biosciences, Keio University, Kakuganji, Tsuruoka, Yamagata, 997-0052, Japan.
| | - Keiji Numata
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
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Katsura S, Furuishi T, Ueda H, Yonemochi E. Cholesteryl-Conjugated Ribonuclease A Exhibits Enzyme Activity in Aqueous Solution and Resistance to Dimethyl Sulfoxide. ACS OMEGA 2021; 6:533-543. [PMID: 33458505 PMCID: PMC7807799 DOI: 10.1021/acsomega.0c05016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Using bovine pancreatic ribonuclease A (RNase A) and cholesterol, we synthesized cholesteryl-conjugated ribonuclease A (CHRNase A) to evaluate the influence of a conjugated hydrophobic moiety on protein function. Nuclear magnetic resonance and matrix-assisted laser desorption/ionization time-of-flight spectrometry suggested that one cholesteryl group was conjugated to RNase A. Differential scanning calorimetry indicated that CHRNase A was denatured in the solid state but was folded in phosphate buffer (0.05 mol/L, pH 6.5). CHRNase A resembled RNase A in its secondary structure, but circular dichroism (CD) spectra revealed that the helical content of CHRNase A was decreased and the tertiary structure of CHRNase A differed from that of RNase A. Furthermore, fluorescence measurements, CD spectra, an 8-anilino-1-naphthalenesulfonic acid ammonium salt-based assay, and surface tension measurements suggested that cholesterol was conjugated to a tyrosine residue on the protein surface. The relative activity of CHRNase A to RNase A was 79 ± 7%, and the enzyme activity of CHRNase A by adding β-cyclodextrin (β-CyD) increased to 129 ± 7%. Therefore, we considered that the cholesteryl group interacted with substrate (cytidine 2'3'-cyclic monophosphate monosodium salt) to inhibit the enzyme reaction. Finally, the environment around tyrosine residues in CHRNase A in dimethyl sulfoxide was similar to that of native RNase A in phosphate buffer (0.05 mol/L, pH 6.5). These results suggest that cholesterol conjugation to RNase A altered RNase A functionality, including improvement of RNase A resistance to dimethyl sulfoxide and modulation of the ability of β-CyD to control RNase A enzymatic activity.
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Affiliation(s)
- Shinji Katsura
- School
of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
- Formulation
Research Laboratory, Taiho Pharmaceutical
Co., Ltd., 224-2, Ebisuno, Hiraishi, Kawauchi-cho, Tokushima 771-0194, Japan
| | - Takayuki Furuishi
- School
of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Haruhisa Ueda
- School
of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Etsuo Yonemochi
- School
of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
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9
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Bertoni S, Tedesco D, Bartolini M, Prata C, Passerini N, Albertini B. Solid Lipid Microparticles for Oral Delivery of Catalase: Focus on the Protein Structural Integrity and Gastric Protection. Mol Pharm 2020; 17:3609-3621. [PMID: 32786955 PMCID: PMC8009523 DOI: 10.1021/acs.molpharmaceut.0c00666] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 01/22/2023]
Abstract
Protein inactivation either during the production process or along the gastrointestinal tract is the major problem associated with the development of oral delivery systems for biological drugs. This work presents an evaluation of the structural integrity and the biological activity of a model protein, catalase, after its encapsulation in glyceryl trimyristate-based solid lipid microparticles (SLMs) obtained by the spray congealing technology. Circular dichroism and fluorescence spectroscopies were used to assess the integrity of catalase released from SLMs. The results confirmed that no conformational change occurred during the production process and both the secondary and tertiary structures were retained. Catalase is highly sensitive to temperature and undergoes denaturation above 60 °C; nevertheless, spray congealing allowed the retention of most biological activity due to the loading of the drug at the solid state, markedly reducing the risk of denaturation. Catalase activity after exposure to simulated gastric conditions (considering both acidic pH and the presence of gastric digestive hydrolases) ranged from 35 to 95% depending on the carrier: increasing of both the fatty acid chain length and the degree of substitution of the glyceride enhanced residual enzyme activity. SLMs allowed the protein release in a simulated intestinal environment and were not cytotoxic against HT29 cells. In conclusion, the encapsulation of proteins into SLMs by spray congealing might be a promising strategy for the formulation of nontoxic and inexpensive oral biotherapeutic products.
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Affiliation(s)
- Serena Bertoni
- PharmTech
Lab, Department of Pharmacy and Biotechnology, University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy
| | - Daniele Tedesco
- Bio-Pharmaceutical
Analysis Section (Bio-PhASe), Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Manuela Bartolini
- Bio-Pharmaceutical
Analysis Section (Bio-PhASe), Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Cecilia Prata
- Biochemistry
Lab, Department of Pharmacy and Biotechnology, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Nadia Passerini
- PharmTech
Lab, Department of Pharmacy and Biotechnology, University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy
| | - Beatrice Albertini
- PharmTech
Lab, Department of Pharmacy and Biotechnology, University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy
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10
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Katsura S, Furuishi T, Ueda H, Yonemochi E. Synthesis and Characterization of Cholesteryl Conjugated Lysozyme (CHLysozyme). Molecules 2020; 25:molecules25163704. [PMID: 32823837 PMCID: PMC7465789 DOI: 10.3390/molecules25163704] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 12/19/2022] Open
Abstract
Hydrophobic interaction is important for protein conformation. Conjugation of a hydrophobic group can introduce intermolecular hydrophobic contacts that can be contained within the molecule. It is possible that a strongly folded state can be formed in solution compared with the native state. In this study, we synthesized cholesteryl conjugated lysozyme (CHLysozyme) using lysozyme and cholesterol as the model protein and hydrophobic group, respectively. Cholesteryl conjugation to lysozyme was confirmed by nuclear-magnetic resonance. Differential-scanning calorimetry suggested that CHLysozyme was folded in solution. CHLysozyme secondary structure was similar to lysozyme, although circular dichroism spectra indicated differences to the tertiary structure. Fluorescence measurements revealed a significant increase in the hydrophobic surface of CHLysozyme compared with that of lysozyme; CHLysozyme self-associated by hydrophobic interaction of the conjugated cholesterol but the hydrophobic surface of CHLysozyme decreased with time. The results suggested that hydrophobic interaction changed from intramolecular interaction to an intermolecular interaction. Furthermore, the relative activity of CHLysozyme to lysozyme increased with time. Therefore, CHLysozyme likely forms a folded state with an extended durability of activity. Moreover, lysozyme was denatured in 100% DMSO but the local environment of tryptophan in CHLysozyme was similar to that of a native lysozyme. Thus, this study suggests that protein solution stability and resistance to organic solvents may be improved by conjugation of a hydrophobic group.
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Affiliation(s)
- Shinji Katsura
- Department of Physical Chemistry, School of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan; (S.K.); (T.F.); (H.U.)
- Formulation research Lab., Taiho Pharmaceutical Co., Ltd., 224-2, Ebisuno, Hiraishi, Kawauchi-cho, Tokushima 771-0194, Japan
| | - Takayuki Furuishi
- Department of Physical Chemistry, School of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan; (S.K.); (T.F.); (H.U.)
| | - Haruhisa Ueda
- Department of Physical Chemistry, School of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan; (S.K.); (T.F.); (H.U.)
| | - Etsuo Yonemochi
- Department of Physical Chemistry, School of Pharmacy and Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan; (S.K.); (T.F.); (H.U.)
- Correspondence: ; Tel.: +81-3-5498-5048
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11
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Hammerer F, Ostadjoo S, Friščić T, Auclair K. Towards Controlling the Reactivity of Enzymes in Mechanochemistry: Inert Surfaces Protect β-Glucosidase Activity During Ball Milling. CHEMSUSCHEM 2020; 13:106-110. [PMID: 31593363 DOI: 10.1002/cssc.201902752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Indexed: 06/10/2023]
Abstract
The activity of β-glucosidases-the enzymes responsible for the final step in the enzymatic conversion of cellulose to glucose-can be maintained and manipulated under mechanochemical conditions in the absence of bulk solvent, either through an unexpected stabilization effect of inert surfaces, or by altering the enzymatic equilibrium. The reported results illustrate unique aspects of mechanoenzymatic reactions that are not observable in conventional aqueous solutions. They also represent the first reported strategies to enhance activity and favor either direction of the reaction under mechanochemical conditions.
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Affiliation(s)
- Fabien Hammerer
- Chemistry Department, McGill University, 801 Sherbrooke St. W., Montreal (QC), H3A 0B8, Canada
| | - Shaghayegh Ostadjoo
- Chemistry Department, McGill University, 801 Sherbrooke St. W., Montreal (QC), H3A 0B8, Canada
| | - Tomislav Friščić
- Chemistry Department, McGill University, 801 Sherbrooke St. W., Montreal (QC), H3A 0B8, Canada
| | - Karine Auclair
- Chemistry Department, McGill University, 801 Sherbrooke St. W., Montreal (QC), H3A 0B8, Canada
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12
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Ferrati S, Wu T, Fuentes O, Brunaugh AD, Kanapuram SR, Smyth HDC. Influence of Formulation Factors on the Aerosol Performance and Stability of Lysozyme Powders: a Systematic Approach. AAPS PharmSciTech 2018; 19:2755-2766. [PMID: 29488193 DOI: 10.1208/s12249-018-0980-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/13/2018] [Indexed: 11/30/2022] Open
Abstract
With the growing interest in developing biologics for pulmonary delivery, systematic fast screening methods are needed for rapid development of formulations. Due to the labile nature of macromolecules, the development of stable, biologically active formulations with desired aerosol performance imposes several challenges both from a formulation and processing perspective. In this study, spray-freeze-drying was used to develop respirable protein powders. In order to systematically map the selected design space, lysozyme aqueous pre-formulations were prepared based on a constrained mixture design of experiment. The physicochemical properties of the resulting powders were characterized and the effects of formulation factors on aerosol performance and protein stability were systematically screened using a logic flow chart. Our results elucidated several relevant formulation attributes (density, total solid content, protein:sugars ratio) required to achieve a stable lysozyme powder with desirable characteristics for pulmonary delivery. A similar logical fast screening strategy could be used to delineate the appropriate design space for different types of proteins and guide the development of powders with pre-determined aerodynamic properties.
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13
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Mohammad MA, Grimsey IM, Forbes RT, Blagbrough IS, Conway BR. Effect of mechanical denaturation on surface free energy of protein powders. Colloids Surf B Biointerfaces 2016; 146:700-6. [DOI: 10.1016/j.colsurfb.2016.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 06/09/2016] [Accepted: 07/04/2016] [Indexed: 12/12/2022]
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14
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Cong H, Xu X, Yu B, Yang Z, Zhang X. A smart temperature and magnetic-responsive gating carbon nanotube membrane for ion and protein transportation. Sci Rep 2016; 6:32130. [PMID: 27535103 PMCID: PMC4989442 DOI: 10.1038/srep32130] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/02/2016] [Indexed: 11/09/2022] Open
Abstract
Carbon nanotube (CNT) nanoporous membranes based on pre-aligned CNTs have superior nano-transportation properties in biological science. Herein, we report a smart temperature- and temperature-magnetic-responsive CNT nanoporous membrane (CNM) by grafting thermal-sensitive poly(N-isopropylacrylamide) (PNIPAM) and Fe3O4 nanoparticles (Fe3O4-NPs) on the open ends of pre-aligned CNTs with a diameter around 15 nm via surface-initiated atom transfer radical polymerization (SI-ATRP) method. The inner cavity of the modified CNTs in the membrane is designed to be the only path for ion and protein transportation, and its effective diameter with a variation from ~5.7 nm to ~12.4 nm can be reversible tuned by temperature and magnetic field. The PNIPAM modified CNM (PNIPAM-CNM) and PNIPAM magnetic nanoparticles modified CNM (PNIPAM-MAG-CNM) exhibit excellent temperature- or temperature-magnetic-responsive gating property to separate proteins of different sizes. The PNIPAM-CNMs and PNIPAM-MAG-CNMs have potential applications in making artificial cells, biosensors, bioseparation and purification filters.
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Affiliation(s)
- Hailin Cong
- Laboratory for New Fiber Materials and Modern Textile, Growing Base for State Key Laboratory, College of Materials Science &Engineering, Qingdao University, Qingdao 266071, China
| | - Xiaodan Xu
- Laboratory for New Fiber Materials and Modern Textile, Growing Base for State Key Laboratory, College of Materials Science &Engineering, Qingdao University, Qingdao 266071, China
| | - Bing Yu
- Laboratory for New Fiber Materials and Modern Textile, Growing Base for State Key Laboratory, College of Materials Science &Engineering, Qingdao University, Qingdao 266071, China.,College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Zhaohui Yang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, China
| | - Xiaoyan Zhang
- Laboratory for New Fiber Materials and Modern Textile, Growing Base for State Key Laboratory, College of Materials Science &Engineering, Qingdao University, Qingdao 266071, China
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Mohammad MA, Grimsey IM, Forbes RT. Equation to Line the Borders of the Folding-Unfolding Transition Diagram of Lysozyme. J Phys Chem B 2016; 120:6911-6. [PMID: 27341101 DOI: 10.1021/acs.jpcb.6b01317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
It is important for the formulators of biopharmaceuticals to predict the folding-unfolding transition of proteins. This enables them to process proteins under predetermined conditions, without denaturation. Depending on the apparent denaturation temperature (Tm) of lysozyme, we have derived an equation describing its folding-unfolding transition diagram. According to the water content and temperature, this diagram was divided into three different areas, namely, the area of the water-folded lysozyme phase, the area of the water-folded lysozyme phase and the bulk water phase, and the area of the denatured lysozyme phase. The water content controlled the appearance and intensity of the Raman band at ∼1787 cm(-1) when lysozyme powders were thermally denatured at temperatures higher than Tm.
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Affiliation(s)
- Mohammad Amin Mohammad
- Drug Delivery Group, School of Pharmacy, University of Bradford , Bradford, West Yorkshire BD7 1DP, U.K.,Department of Pharmaceutics, Faculty of Pharmacy, University of Damascus , Damascus, Syria
| | - Ian M Grimsey
- Drug Delivery Group, School of Pharmacy, University of Bradford , Bradford, West Yorkshire BD7 1DP, U.K
| | - Robert T Forbes
- Drug Delivery Group, School of Pharmacy, University of Bradford , Bradford, West Yorkshire BD7 1DP, U.K.,School of Pharmacy and Biological Sciences, University of Central Lancashire , Preston, Lancashire PR12HE, U.K
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