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Chen M, Pan Q, Wu B, Wang H, Yi Y, Xu W, Guo D. Effect of Fenugreek ( Trigonella foenum-graecum L.) Seed Extracts on the Structure of Myofibrillar Protein Oxidation in Duck Meat. Foods 2023; 12:4482. [PMID: 38137286 PMCID: PMC10742523 DOI: 10.3390/foods12244482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
The effect of fenugreek (Trigonella foenum-graecum L.) seed extracts (FSEs) on the structure of duck myofibrillar protein (MP) oxidation was researched via particle size, zeta potential, Fourier transform infrared (FTIR), fluorescence spectroscopy, SDS-PAGE, and scanning electron microscopy (SEM) in the Fenton oxidation system. FSE (0.3 mg/mL) could scavenge 58.79% of the hydroxyl radical and possessed good antioxidation. FSE could retard the oxidation of MP, and the carbonyl formation and total sulfhydryl loss of MP decreased by 42.00% and 105.94%, respectively, after 4.67% of FSE treatment. SDS-PAGE results showed that 0.67% and 2.67% of FSE decreased the strength of the myosin heavy chain (MHC) and actin bands of the oxidized MP, respectively. The FSE changed the secondary structures of the MP and promoted the unfolding of the MP structure and the transformation from α-helix to β-turn. When treated with 0.67% of FSE, the hydrophobicity of the MP declined by 26.14%, and solubility was improved by 37.21% compared with the oxidation group. After 0.67% of FSE treatment, the particle size and zeta potential of the MP returned to the level of the blank group. Scanning electron microscopy revealed that FSE improved the apparent morphology of the MP. Overall, FSE had positive effects on the antioxidation of the duck MP, and it could improve the structure and characteristics of the MP. It is hoped that FSE could be considered as a natural antioxidant to retard the oxidation of the MP in meat products.
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Affiliation(s)
- Mingyue Chen
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (M.C.); (B.W.); (H.W.); (Y.Y.); (D.G.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan 430023, China
| | - Qingmei Pan
- Hongan County Public Inspection and Testing Center, Hongan 438400, China;
| | - Binbin Wu
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (M.C.); (B.W.); (H.W.); (Y.Y.); (D.G.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan 430023, China
| | - Hongxun Wang
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (M.C.); (B.W.); (H.W.); (Y.Y.); (D.G.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan 430023, China
| | - Yang Yi
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (M.C.); (B.W.); (H.W.); (Y.Y.); (D.G.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan 430023, China
| | - Wei Xu
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (M.C.); (B.W.); (H.W.); (Y.Y.); (D.G.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan 430023, China
| | - Danjun Guo
- School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (M.C.); (B.W.); (H.W.); (Y.Y.); (D.G.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan 430023, China
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Xu J, Xu J, Tong Z, Yu S, Liu B, Mu X, Du B, Gao C, Wang J, Liu Z, Liu D. Impact of different classification schemes on discrimination of proteins with noise-contaminated spectra using laboratory-measured fluorescence data. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122646. [PMID: 37003145 DOI: 10.1016/j.saa.2023.122646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/05/2023] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
Biological agents are important to detect and identify with respect to environmental contamination and public health. Noise contamination in fluorescent spectra is one of the contributors to the uncertainties of identification. In order to investigate the noise-tolerant capability provided by laboratory-measured excitation-emission matrix (EEM) fluorescence spectra that are used as a database, fluorescence properties of four proteinaceous biotoxin samples and ten harmless protein samples were characterized by EEM fluorescence spectra, and the predicting performance of models trained by laboratory-measured fluorescence data was tested and verified from validation data with noise-contaminated spectra. By means of peak signal of noise (PSNR) as an indicator of noise levels, the potential impact of noise contaminations on the characterization and discrimination of these samples was evaluated quantitatively. Different classification schemes utilizing multivariate analysis techniques of Principal Component Analysis (PCA), Random Forest (RF), and Multi-layer Perceptron (MPL) coupled with feature descriptors of differential transform (DT), Fourier transform (FT) and wavelet transform (WT) were conducted under different PSNR values. We systematically analyzed the performance of classification schemes by the case study at 20 PSNR and by statistical analysis from 1-100 PSNR. The results show that the spectral features with EEM-WT decreased the demanding number of input variables while retaining high performances in sample classification. The spectral features with EEM-FT presented the worst performance although having the largest number of features. The distributions of feature importance and contribution were found sensitive to noise contaminations. The classification scheme of PCA prior to MPL with EEM-WT as input presented an improvement in lower PSNR. These results indicate that robust features extracted by corresponding techniques are critical to enhancing the spectral differentiation capabilities among these samples and play an important role in eliminating the noise effect. The study of classification schemes for discriminating protein samples with noise-contaminated spectra presents tremendous potential for future developments in the rapid detection and identification of proteinaceous biotoxins based on three-dimensional fluorescence spectrometry.
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Affiliation(s)
- Jiwei Xu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Jianjie Xu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China.
| | - Zhaoyang Tong
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Siqi Yu
- Department of Earth System Science, Tsinghua University, Beijing, 100084, China
| | - Bing Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Xihui Mu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Bin Du
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Chuan Gao
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Jiang Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Zhiwei Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Dong Liu
- Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, Anhui, China
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Xu J, Xu J, Tong Z, Du B, Liu B, Mu X, Guo T, Yu S, Liu S, Gao C, Wang J, Liu Z, Zhang P. Performance of feature extraction method for classification and identification of proteins based on three-dimensional fluorescence spectrometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121841. [PMID: 36179565 DOI: 10.1016/j.saa.2022.121841] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
Three-dimensional excitation emission matrix (EEM) fluorescence spectroscopy was employed to discriminate protein samples comprising bovine serum albumin, neurotensin, ovalbumin, ricin, trypsin from bovine pancreas and trypsin from porcine pancreas. Two methods of feature extraction with and without parameterization were applied to the spectral data in order to evaluate their performance of discrimination between protein samples. The discrimination of protein samples was conducted by k-means clustering algorithm and eigenvalue extracting procedure based on principal component analysis (PCA). It was found that the method of feature extraction without parameterization performed best, correctly attributing 100% of the spectral data in the condition of two principal components (PCs) captured. Features extracted with spectral parameterization failed to separate ricin and trypsin from bovine pancreas in same condition. Without spectral parameterization, less dimensionality and unique principal components captured by PCA indicates the spectrally-resolved features of corresponding protein samples. By clustering using each spectrum at fixed excitation wavelength, excitation wavelengths matched with common intrinsic fluorophores were found to be more sensitive to the classification accuracy. Contributions of spectral features extracted from EEM to the principal components were discussed and demonstrated their feature differentiation capabilities among six protein samples. These results reveal that appropriate extraction approach of features in combination with PCA analysis could be used in discrimination of protein samples at species level as a spectroscopic diagnostic tool. Our study provides fundamental references about computational strategies when EEM are used to explore proteins in ambient environment.
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Affiliation(s)
- Jiwei Xu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Jianjie Xu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China.
| | - Zhaoyang Tong
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Bin Du
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Bing Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Xihui Mu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Tengxiao Guo
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Siqi Yu
- School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Shuai Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Chuan Gao
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Jiang Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Zhiwei Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Pengjie Zhang
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
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Hwang TL, Batabyal D, Knutson N, Wikström M. Use of the 2D 1H- 13C HSQC NMR Methyl Region to Evaluate the Higher Order Structural Integrity of Biopharmaceuticals. Molecules 2021; 26:molecules26092714. [PMID: 34063095 PMCID: PMC8125315 DOI: 10.3390/molecules26092714] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 11/16/2022] Open
Abstract
The higher-order structure (HOS) of protein therapeutics is directly related to the function and represents a critical quality attribute. Currently, the HOS of protein therapeutics is characterized by methods with low to medium structural resolution, such as Fourier transform infrared (FTIR), circular dichroism (CD), intrinsic fluorescence spectroscopy (FLD), and differential scanning calorimetry (DSC). High-resolution nuclear magnetic resonance (NMR) methods have now been introduced, representing powerful approaches for HOS characterization (HOS by NMR). NMR is a multi-attribute method with unique abilities to give information on all structural levels of proteins in solution. In this study, we have compared 2D 1H-13C HSQC NMR with two established biophysical methods, i.e., near-ultraviolet circular dichroism (NUV-CD) and intrinsic fluorescence spectroscopy, for the HOS assessments for the folded and unfolded states of two monoclonal antibodies belonging to the subclasses IgG1 and IgG2. The study shows that the methyl region of the 1H-13C HSQC NMR spectrum is sensitive to both the secondary and tertiary structure of proteins and therefore represents a powerful tool in assessing the overall higher-order structural integrity of biopharmaceutical molecules.
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Chen Y, Mutukuri TT, Wilson NE, Zhou QT. Pharmaceutical protein solids: Drying technology, solid-state characterization and stability. Adv Drug Deliv Rev 2021; 172:211-233. [PMID: 33705880 PMCID: PMC8107147 DOI: 10.1016/j.addr.2021.02.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/18/2021] [Accepted: 02/22/2021] [Indexed: 01/30/2023]
Abstract
Despite the boom in biologics over the past decade, the intrinsic instability of these large molecules poses significant challenges to formulation development. Almost half of all pharmaceutical protein products are formulated in the solid form to preserve protein native structure and extend product shelf-life. In this review, both traditional and emerging drying techniques for producing protein solids will be discussed. During the drying process, various stresses can impact the stability of protein solids. However, understanding the impact of stress on protein product quality can be challenging due to the lack of reliable characterization techniques for biological solids. Both conventional and advanced characterization techniques are discussed including differential scanning calorimetry (DSC), solid-state Fourier transform infrared spectrometry (ssFTIR), solid-state fluorescence spectrometry, solid-state hydrogen deuterium exchange (ssHDX), solid-state nuclear magnetic resonance (ssNMR) and solid-state photolytic labeling (ssPL). Advanced characterization tools may offer mechanistic investigations into local structural changes and interactions at higher resolutions. The continuous exploration of new drying techniques, as well as a better understanding of the effects caused by different drying techniques in solid state, would advance the formulation development of biological products with superior quality.
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Affiliation(s)
- Yuan Chen
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Tarun Tejasvi Mutukuri
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Nathan E Wilson
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Qi Tony Zhou
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA.
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Bolje A, Gobec S. Analytical Techniques for Structural Characterization of Proteins in Solid Pharmaceutical Forms: An Overview. Pharmaceutics 2021; 13:pharmaceutics13040534. [PMID: 33920461 PMCID: PMC8070348 DOI: 10.3390/pharmaceutics13040534] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/21/2021] [Accepted: 04/08/2021] [Indexed: 11/17/2022] Open
Abstract
Therapeutic proteins as biopharmaceuticals have emerged as a very important class of drugs for the treatment of many diseases. However, they are less stable compared to conventional pharmaceuticals. Their long-term stability in solid forms, which is critical for product performance, depends heavily on the retention of the native protein structure during the lyophilization (freeze-drying) process and, thereafter, in the solid state. Indeed, the biological function of proteins is directly related to the tertiary and secondary structure. Besides physical stability and biological activity, conformational stability (three-dimensional structure) is another important aspect when dealing with protein pharmaceuticals. Moreover, denaturation as loss of higher order structure is often a precursor to aggregation or chemical instability. Careful study of the physical and chemical properties of proteins in the dried state is therefore critical during biopharmaceutical drug development to deliver a final drug product with built-in quality that is safe, high-quality, efficient, and affordable for patients. This review provides an overview of common analytical techniques suitable for characterizing pharmaceutical protein powders, providing structural, and conformational information, as well as insights into dynamics. Such information can be very useful in formulation development, where selecting the best formulation for the drug can be quite a challenge.
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Affiliation(s)
- Aljoša Bolje
- Correspondence: (A.B.); (S.G.); Tel.: +386-147-69500 (A.B.); +386-147-69585 (S.G.)
| | - Stanislav Gobec
- Correspondence: (A.B.); (S.G.); Tel.: +386-147-69500 (A.B.); +386-147-69585 (S.G.)
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Wen J, Batabyal D, Knutson N, Lord H, Wikström M. A Comparison Between Emerging and Current Biophysical Methods for the Assessment of Higher-Order Structure of Biopharmaceuticals. J Pharm Sci 2019; 109:247-253. [PMID: 31669605 DOI: 10.1016/j.xphs.2019.10.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 02/06/2023]
Abstract
The higher-order structure (HOS) of protein therapeutics is a critical quality attribute directly related to their function. Traditionally, the HOS of protein therapeutics has been characterized by methods with low to medium structural resolution such as Fourier-transform infrared (FTIR), circular dichroism (CD), and intrinsic fluorescence spectroscopy, and differential scanning calorimetry (DSC). Recently, high-resolution nuclear magnetic resonance (NMR) methods have emerged as powerful tools for HOS characterization. NMR is a multi-attribute method with unique capabilities to provide information about all the structural levels of proteins in solution. We have in this study compared 1 D 1H Profile NMR with the established biophysical methods for HOS assessments using a set of blended samples of the monoclonal antibodies belonging to the subclasses IgG1 and IgG2. The study shows that Profile NMR can distinguish between most sample combinations (93%), DSC can differentiate 61% of the sample combinations, and near-ultraviolet CD spectroscopy can differentiate 52% of the sample combinations, whereas no significant distinction could be made between any samples using FTIR or intrinsic fluorescence. Our data therefore show that NMR has superior ability to address differences in HOS, a feature that could be directly applicable in comparability and similarity assessments.
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Affiliation(s)
- Jie Wen
- Amgen Inc., Higher Order Structure, Attribute Sciences, Thousand Oaks, California 91320.
| | - Dipanwita Batabyal
- Amgen Inc., Higher Order Structure, Attribute Sciences, Thousand Oaks, California 91320
| | - Nicholas Knutson
- Amgen Inc., Higher Order Structure, Attribute Sciences, Thousand Oaks, California 91320
| | - Harrison Lord
- Amgen Inc., Higher Order Structure, Attribute Sciences, Thousand Oaks, California 91320
| | - Mats Wikström
- Amgen Inc., Higher Order Structure, Attribute Sciences, Thousand Oaks, California 91320.
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Gautam S, Gupta MN. Solid state fluorescence of proteins in high throughput mode and its applications. F1000Res 2019; 2:82. [PMID: 30997030 PMCID: PMC6441877 DOI: 10.12688/f1000research.2-82.v2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/07/2019] [Indexed: 11/24/2022] Open
Abstract
Direct comparison between fluorescence spectra of a sample in solution and solid state form is valuable to monitor the changes in protein structure when it is “dried” or immobilized on a solid surface (for biocatalysis or sensor applications). We describe here a simple method for recording fluorescence emission spectra of protein powders without using any dedicated accessory for solid samples in a high-throughput format. The 96-well plate used in our studies, was coated black from all the sides and the excitation and emission paths are identical and are from the top of the well. These two features minimize scatter and provide fairly noise free spectra. Even then the fluorescence intensity may be dependent upon many factors such as the extent of protein aggregation, morphology and sizes of the protein particles. Hence, (changes in) λ
max emission may be a more reliable metric in the case of fluorescence spectra of proteins in the solid state. However, any large changes in the intensity could indicate changes in the microenvironment of the fluorophore. The fluorescence emission spectra were blue-shifted (4 to 9 nm), showed an increase in the intensity for different proteins studied upon lyophilization, and were similar to what has been reported by others using available commercial accessories for solid state samples. After validating that our method worked just as well as the dedicated accessories, we applied the method to compare the fluorescence emission spectra of α-chymotrypsin in solution, precipitated form, and the lyophilized powder form. We further examined the fluorescence emission spectra of green fluorescent protein (GFP) in solution and solid form. We also analyzed fluorescence resonance energy transfer (FRET) between tryptophan (Trp57) and the cyclic chromophore of GFP. These findings pointed towards the change in the microenvironment around the cyclic chromophore in GFP upon lyophilization.
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Affiliation(s)
- Saurabh Gautam
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Munishwar N Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
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Henihan LE, O'Donnell CP, Esquerre C, Murphy EG, O'Callaghan DJ. Fluorescence-based analyser as a rapid tool for determining soluble protein content in dairy ingredients and infant milk formula. INNOV FOOD SCI EMERG 2019. [DOI: 10.1016/j.ifset.2018.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Moussa EM, Singh SK, Kimmel M, Nema S, Topp EM. Probing the Conformation of an IgG1 Monoclonal Antibody in Lyophilized Solids Using Solid-State Hydrogen–Deuterium Exchange with Mass Spectrometric Analysis (ssHDX-MS). Mol Pharm 2018; 15:356-368. [DOI: 10.1021/acs.molpharmaceut.7b00696] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ehab M. Moussa
- Department
of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Satish K. Singh
- BioTherapeutics
Pharmaceutical Sciences, Pfizer Inc., Chesterfield, Missouri 63017, United States
| | - Michael Kimmel
- BioTherapeutics
Pharmaceutical Sciences, Pfizer Inc., Chesterfield, Missouri 63017, United States
| | - Sandeep Nema
- BioTherapeutics
Pharmaceutical Sciences, Pfizer Inc., Chesterfield, Missouri 63017, United States
| | - Elizabeth M. Topp
- Department
of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
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Moussa EM, Wilson NE, Zhou QT, Singh SK, Nema S, Topp EM. Effects of Drying Process on an IgG1 Monoclonal Antibody Using Solid-State Hydrogen Deuterium Exchange with Mass Spectrometric Analysis (ssHDX-MS). Pharm Res 2018; 35:12. [DOI: 10.1007/s11095-017-2318-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
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12
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Lyophilized protein powders: A review of analytical tools for root cause analysis of lot-to-lot variability. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.05.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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13
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Effect of pH and Excipients on Structure, Dynamics, and Long-Term Stability of a Model IgG1 Monoclonal Antibody upon Freeze-Drying. Pharm Res 2012. [DOI: 10.1007/s11095-012-0933-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Adamiano A, Bonacchi S, Calonghi N, Fabbri D, Falini G, Fermani S, Genovese D, Kralj D, Montalti M, Njegić Džakula B, Prodi L, Sartor G. Structural Changes in a Protein Fragment from Abalone Shell during the Precipitation of Calcium Carbonate. Chemistry 2012; 18:14367-74. [DOI: 10.1002/chem.201201863] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Indexed: 11/06/2022]
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15
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Siddiki MSR, Kawakami Y, Ueda S, Maeda I. Solid phase biosensors for arsenic or cadmium composed of A trans factor and cis element complex. SENSORS 2011; 11:10063-73. [PMID: 22346629 PMCID: PMC3274271 DOI: 10.3390/s111110063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Revised: 10/18/2011] [Accepted: 10/24/2011] [Indexed: 11/16/2022]
Abstract
The presence of toxic metals in drinking water has hazardous effects on human health. This study was conducted to develop GFP-based-metal-binding biosensors for on-site assay of toxic metal ions. GFP-tagged ArsR and CadC proteins bound to a cis element, and lost the capability of binding to it in their As- and Cd-binding conformational states, respectively. Water samples containing toxic metals were incubated on a complex of GFP-tagged ArsR or CadC and cis element which was immobilized on a solid surface. Metal concentrations were quantified with fluorescence intensity of the metal-binding states released from the cis element. Fluorescence intensity obtained with the assay significantly increased with increasing concentrations of toxic metals. Detection limits of 1 μg/L for Cd(II) and 5 μg/L for As(III) in purified water and 10 µg/L for Cd(II) and As(III) in tap water and bottled mineral water were achieved by measurement with a battery-powered portable fluorometer after 15-min and 30-min incubation, respectively. A complex of freeze dried GFP-tagged ArsR or CadC binding to cis element was stable at 4 °C and responded to 5 μg/L As(III) or Cd(II). The solid phase biosensors are sensitive, less time-consuming, portable, and could offer a protocol for on-site evaluation of the toxic metals in drinking water.
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Affiliation(s)
- Mohammad Shohel Rana Siddiki
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Japan; E-Mails: (M.S.R.S.); (S.U.)
| | - Yasunari Kawakami
- Faculty of Agriculture, Utsunomiya University, 350 Minemachi, Utsunomiya 321-8505, Japan; E-Mail: (Y.K.)
| | - Shunsaku Ueda
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Japan; E-Mails: (M.S.R.S.); (S.U.)
- Faculty of Agriculture, Utsunomiya University, 350 Minemachi, Utsunomiya 321-8505, Japan; E-Mail: (Y.K.)
| | - Isamu Maeda
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu 183-8509, Japan; E-Mails: (M.S.R.S.); (S.U.)
- Faculty of Agriculture, Utsunomiya University, 350 Minemachi, Utsunomiya 321-8505, Japan; E-Mail: (Y.K.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +81-28-649-5477; Fax: +81-28-649-5477
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Bee JS, Chiu D, Sawicki S, Stevenson JL, Chatterjee K, Freund E, Carpenter JF, Randolph TW. Monoclonal antibody interactions with micro- and nanoparticles: adsorption, aggregation, and accelerated stress studies. J Pharm Sci 2009; 98:3218-38. [PMID: 19492408 PMCID: PMC2749556 DOI: 10.1002/jps.21768] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Therapeutic proteins are exposed to various wetted surfaces that could shed subvisible particles. In this work we measured the adsorption of a monoclonal antibody (mAb) to various microparticles, characterized the adsorbed mAb secondary structure, and determined the reversibility of adsorption. We also developed and used a front-face fluorescence quenching method to determine that the mAb tertiary structure was near-native when adsorbed to glass, cellulose, and silica. Initial adsorption to each of the materials tested was rapid. During incubation studies, exposure to the air-water interface was a significant cause of aggregation but acted independently of the effects of microparticles. Incubations with glass, cellulose, stainless steel, or Fe(2)O(3) microparticles gave very different results. Cellulose preferentially adsorbed aggregates from solution. Glass and Fe(2)O(3) adsorbed the mAb but did not cause aggregation. Adsorption to stainless steel microparticles was irreversible, and caused appearance of soluble aggregates upon incubation. The secondary structure of mAb adsorbed to glass and cellulose was near-native. We suggest that the protocol described in this work could be a useful preformulation stress screening tool to determine the sensitivity of a therapeutic protein to exposure to common surfaces encountered during processing and storage.
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Affiliation(s)
- Jared S. Bee
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309
| | - David Chiu
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309
| | - Suzanne Sawicki
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309
| | | | | | - Erwin Freund
- Drug Product & Device Development, Amgen Inc., Thousand Oaks, CA 91320
| | - John F. Carpenter
- Department of Pharmaceutical Sciences, University of Colorado Health Sciences Center, Denver, Colorado 80262
| | - Theodore W. Randolph
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309
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Dong J, Solntsev KM, Tolbert LM. Activation and Tuning of Green Fluorescent Protein Chromophore Emission by Alkyl Substituent-Mediated Crystal Packing. J Am Chem Soc 2008; 131:662-70. [PMID: 19140797 DOI: 10.1021/ja806962e] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian Dong
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400
| | - Kyril M. Solntsev
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400
| | - Laren M. Tolbert
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0400
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Capelle MAH, Arvinte T. High-throughput formulation screening of therapeutic proteins. DRUG DISCOVERY TODAY. TECHNOLOGIES 2008; 5:e71-e79. [PMID: 24981094 DOI: 10.1016/j.ddtec.2009.03.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
High-throughput screening (HTS) is used extensively in drug discovery to identify active compounds. Automated preparation and sample analysis in multiwell plates using a combination of liquid and/or powder handling stations, robotics and sensitive detection devices provide powerful tools. At present, protein formulation remains a slow process and will benefit from a fast formulation screening approach. The use of multiwell plates enables the simultaneous screening of many excipients and experimental conditions, such as buffers, salts, surfactants, sugars, storage temperature and mechanical stress. This article reviews the application of the HTS methodology for the development of different protein formulations, such as stable liquids, lyophilisates and slow release forms.:
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Affiliation(s)
- Martinus A H Capelle
- Therapeomic Inc., c/o University of Geneva, Quai E-Ansermet 30, 1211 Geneva 4, Switzerland
| | - Tudor Arvinte
- Department of Pharmaceutics and Biopharmaceutics, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai E-Ansermet 30, 1211 Geneva 4, Switzerland.
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