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Sajjadi S, Wu SJ, Rabbani Y, Zubkovs V, Ahmadzadeh H, K. Goharshadi E, Boghossian AA. Micropreparative Gel Electrophoresis for Purification of Nanoscale Bioconjugates. Bioconjug Chem 2024; 35:154-163. [PMID: 38320084 PMCID: PMC10885001 DOI: 10.1021/acs.bioconjchem.3c00388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 01/03/2024] [Accepted: 01/03/2024] [Indexed: 02/08/2024]
Abstract
Conventional techniques for purifying macromolecular conjugates often require complex and costly installments that are inaccessible to most laboratories. In this work, we develop a one-step micropreparative method based on a trilayered polyacrylamide gel electrophoresis (MP-PAGE) setup to purify biological samples, synthetic nanoparticles, as well as biohybrid complexes. We apply this method to recover DNA from a ladder mixture with yields of up to 90%, compared to the 58% yield obtained using the conventional crush-and-soak method. MP-PAGE was also able to isolate enhanced yellow fluorescence protein (EYFP) from crude cell extract with 90% purity, which is comparable to purities achieved through a more complex two-step purification procedure involving size exclusion and immobilized metal-ion affinity chromatography. This technique was further extended to demonstrate size-dependent separation of a commercial mixture of graphene quantum dots (GQDs) into three different fractions with distinct optical properties. Finally, MP-PAGE was used to isolate DNA-EYFP and DNA-GQD bioconjugates from their reaction mixture of DNA and EYFP and GQD precursors, samples that otherwise could not be effectively purified by conventional chromatography. MP-PAGE thus offers a rapid and versatile means of purifying biological and synthetic nanomaterials without the need for specialized equipment.
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Affiliation(s)
- Sayyed
Hashem Sajjadi
- Ecole
Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
- Chemistry
Department, Faculty of Science, Ferdowsi
University of Mashhad, Mashhad 9177948974, Iran
| | - Shang-Jung Wu
- Ecole
Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Yahya Rabbani
- Ecole
Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Vitalijs Zubkovs
- Ecole
Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Hossein Ahmadzadeh
- Chemistry
Department, Faculty of Science, Ferdowsi
University of Mashhad, Mashhad 9177948974, Iran
| | - Elaheh K. Goharshadi
- Chemistry
Department, Faculty of Science, Ferdowsi
University of Mashhad, Mashhad 9177948974, Iran
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Kusuma SAF, Fadhlillah M, Rostinawati T, Maisyarah IT, Syafitri RIP, Subroto T. Gel Protein Extraction's Impact on Conformational Epitopes of Linear Non-Tagged MPT64 Protein. Gels 2023; 9:578. [PMID: 37504457 PMCID: PMC10378983 DOI: 10.3390/gels9070578] [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: 06/23/2023] [Revised: 06/27/2023] [Accepted: 07/02/2023] [Indexed: 07/29/2023] Open
Abstract
The production and purification of recombinant proteins are crucial to acquiring pure MPT64 protein. Due to the fact that protein epitopes may undergo conformational changes during purification, this study, therefore, investigated an effective rapid purification method to produce highly intracellular pure MPT64 protein without causing conformational changes in the epitope under denaturing conditions. MPT64 was isolated from E. coli and electrophoresed using gel SDS-PAGE. Then, the desired protein bands were excised and purified with two methods: electroelution and passive elution. The isolated protein was identified via peptide mass fingerprinting using MALDI-TOF MS and reacted with IgG anti-MPT64, and the cross-reactivity of the isolated protein with IgY anti-MPT64 was confirmed using Western blot. The results show that both of these methods produced pure MPT64 protein, and the MPT64 protein was confirmed based on the MALDI-TOF MS results. Neither of these two methods resulted in epitope changes in the MPT64 protein so it could react specifically with both antibodies. The yield of MPT64 protein was higher with electroelution (2030 ± 41 µg/mL) than with passive elution (179.5 ± 7.5 µg/mL). Thus, it can be inferred that the electroelution method is a more effective method of purifying MPT64 protein and maintaining its epitope than the passive elution method.
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Affiliation(s)
- Sri Agung Fitri Kusuma
- Department of Biology Pharmacy, Faculty of Pharmacy, Padjadjaran University, Sumedang 45363, Indonesia
- Study Center of Drugs Dosage Form Development, Faculty of Pharmacy, Padjadjaran University, Sumedang 45363, Indonesia
| | - Muhammad Fadhlillah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Sumedang 45363, Indonesia
- Research Center of Molecular Biotechnology and Bioinformatics, Padjadjaran University, Bandung 40132, Indonesia
| | - Tina Rostinawati
- Department of Biology Pharmacy, Faculty of Pharmacy, Padjadjaran University, Sumedang 45363, Indonesia
| | - Intan Timur Maisyarah
- Department of Biology Pharmacy, Faculty of Pharmacy, Padjadjaran University, Sumedang 45363, Indonesia
| | | | - Toto Subroto
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Sumedang 45363, Indonesia
- Research Center of Molecular Biotechnology and Bioinformatics, Padjadjaran University, Bandung 40132, Indonesia
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Yan J, Gao Y, Li J, Li M, Guo C, Bai J, Jiang P. The Establishment and Application of Indirect 3AB-ELISA for The Detection of Antibodies against Senecavirus A. Viruses 2023; 15:v15040861. [PMID: 37112841 PMCID: PMC10141147 DOI: 10.3390/v15040861] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/21/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
Senecavirus A (SVA) is an emerging pathogen that negatively affects the pig industry in China. Affected animals present vesicular lesions which are indistinguishable from other vesicular diseases. To date, there is no commercial vaccine that can be used to control SVA infection in China. In this study, recombinant SVA 3AB, 2C, 3C, 3D, L and VP1 proteins are expressed by using a prokaryotic expression system. The kinetics of the presence and levels of SVA antibodies with SVA-inoculated pig serum show that 3AB has the best antigenicity. An indirect enzyme-linked immunosorbent assay (ELISA) is developed with the 3AB protein, exhibiting a sensitivity of 91.3% and no cross-reaction with serum antibodies against PRRSV, CSFV, PRV, PCV2 or O-type FMDV. Given the high sensitivity and specificity of this approach, a nine-year (2014–2022) retrospective and prospective serological study is conducted to determine the epidemiological profile and dynamics of SVA in East China. Although SVA seropositivity declined markedly from 2016 (98.85%) to 2022 (62.40%), SVA transmission continues in China. Consequently, the SVA 3AB-based indirect ELISA has good sensitivity and specificity and is suitable for viral detection, field surveillance and epidemiological studies.
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Sugaya H, Kurashige Y, Suzuki K, Sakakibara S, Fujita Y, Islam ST, Nezu T, Ito S, Abiko Y, Saitoh M. Regaining enamel color quality using enamel matrix derivative. Med Mol Morphol 2023; 56:116-127. [PMID: 36622467 PMCID: PMC10188587 DOI: 10.1007/s00795-022-00346-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 12/22/2022] [Indexed: 01/10/2023]
Abstract
This study aimed to demonstrate and compare the accuracy of tooth shade selection due to the remineralized enamel crystal with enamel matrix derivative (EMD) in vitro. Etched enamel slices were immersed in four types of mineralization buffers for 16 h. Sodium fluoride (NaF) was added to final concentrations of 1-100 ppm with the mineralization buffer that demonstrated the highest mineralization efficiency. EMD was added to the mineralization buffer containing NaF to see if it has any remineralization capacities. The remineralized enamel crystal was analyzed by SEM and XRD. The tooth shade was evaluated by CIE L*a*b*. The results showed that, without NaF, plate-like nanocrystals were formed on the enamel surface, but with NaF, needle-like nanocrystals were formed. By adding EMD, a layer of well-compacted hydroxyapatite crystals was successfully precipitated onto the natural enamel surface. No significant differences were observed in the L* value of the mineralization surface pre-etching and after mineralization buffer containing NaF and EMD. A new method has been developed to recover the color quality of enamel, as well as to mineralize the tooth enamel by constructing hydroxyapatite crystals with mineralization buffers containing NaF and EMD on the etched tooth surface.
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Affiliation(s)
- Hiroyuki Sugaya
- Division of Pediatric, Dentistry School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan
| | - Yoshihito Kurashige
- Division of Pediatric, Dentistry School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan
| | - Kai Suzuki
- Division of Pediatric, Dentistry School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan
| | - Sayaka Sakakibara
- Division of Pediatric, Dentistry School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan
| | - Yusuke Fujita
- Division of Pediatric, Dentistry School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan
| | - Syed Taufiqul Islam
- Division of Pediatric, Dentistry School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan
| | - Takashi Nezu
- Division of Biomaterials and Bioengineering, School of Dentistry, Health Sciences University of Hokkaido, Tobetsu, Japan
| | - Shuichi Ito
- Division of Dental Education Development, School of Dentistry, Health Sciences University of Hokkaido, Tobetsu, Japan
| | - Yoshihiro Abiko
- Division of Oral Medicine and Pathology, Dentistry School of Dentistry, Health Sciences University of Hokkaido, Tobetsu, Japan
| | - Masato Saitoh
- Division of Pediatric, Dentistry School of Dentistry, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan.
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Jorasia K, Paul RK, Rathore NS, Lal P, Singh R, Sareen M. Production of bioactive recombinant ovine cysteine-rich secretory protein 1 in Escherichia coli. Syst Biol Reprod Med 2021; 67:471-481. [PMID: 34459353 DOI: 10.1080/19396368.2021.1963012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Ovine cysteine-rich secretory protein 1 (CRISP-1) is an acidic glycoprotein of epididymal origin under CRISP, antigen 5, pathogenesis-related protein 1 (CAP) super-family. The aim of the present study was the optimization of bacterial production and partial characterization of putative mature ovine CRISP-1 protein. The cDNA corresponding to T23 - C242 peptide fragment of ovine CRISP-1 protein was cloned into THE pET32b(+) expression vector using E. coli DH5α. Protein expression was carried out in E. coli BL21(DE3) by inducition with 1 mM IPTG at 37°C for 4 h. The recombinant protein was expressed as inclusion bodies and purified by Ni-NTA affinity chromatography using a pH gradient. Further purification of the protein was carried out by gel extraction following zinc sulfate negative staining. SDS-PAGE analysis of the purified recombinant CRISP-1 protein revealed a 43.8 kDa band. Bioactivity of the purified CRISP-1 protein was examined on sperm motility and capacitation. The recombinant ovine CRISP-1 protein at 5 µg/ml caused significant inhibition of sperm motility, and the activity was lost following heating the protein at 100°C for 5 min. The protein also demonstrated decapacitation activity, and at a concentration of 2 µg/ml, it caused a significant (P < 0.05) reduction in sperm capacitation. In conclusion, the thioredoxin-tagged ovine CRISP-1 protein was successfully produced in E. coli and purified in the soluble form by a combination of Ni-NTA affinity chromatography, gel purification, and dialysis. The recombinant protein exhibited both motility-inhibiting and decapacitating activities. Further study is needed to elucidate the mechanism of action and evaluate it's possible use in semen preservation.Abbreviations: CRISP-1: Cysteine-rich secretory protein-1; PCR: polymerase chain reaction; IPTG: isopropyl-β-D-thiogalactopyranoside; LB: Luria Bertani; SDS-PAGE: sodium dodecyl sulfate polyacrylamide gel electrophoresis; EDTA: ethylene diamine tetraacetic acid; Ni-NTA: Nickel nitrilotriacetic acid.
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Affiliation(s)
- Kalpana Jorasia
- Department of Veterinary Biochemistry, Rajasthan University of Animal and Veterinary Sciences, Bikaner, India
| | - Rajani Kr Paul
- Division of Animal Physiology & Biochemistry, ICAR-Central Sheep and Wool Research Institute, Avikanagar, Jaipur, India
| | - N S Rathore
- Department of Veterinary Biochemistry, Rajasthan University of Animal and Veterinary Sciences, Bikaner, India
| | - Pyare Lal
- Department of Veterinary Biochemistry, Rajasthan University of Animal and Veterinary Sciences, Bikaner, India
| | - R Singh
- Division of Animal Physiology & Biochemistry, ICAR-Central Sheep and Wool Research Institute, Avikanagar, Jaipur, India
| | - Meenaxi Sareen
- Department of Veterinary Biochemistry, Rajasthan University of Animal and Veterinary Sciences, Bikaner, India
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Kusuma SAF, Parwati I, Subroto T, Rukayadi Y, Fadhlillah M, Rizaludin A. Comparison of simple and rapid extracting methods of free-tags Mycobacterium tuberculosis protein 64 Recombinant Protein from polyacrylamide gel: Electroelution and the optimized passive elution. J Adv Pharm Technol Res 2021; 12:180-184. [PMID: 34159151 PMCID: PMC8177148 DOI: 10.4103/japtr.japtr_318_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 12/31/2020] [Accepted: 02/18/2021] [Indexed: 12/25/2022] Open
Abstract
In this study, the Mycobacterium tuberculosis protein 64 (MPT64) protein was constructed without any tags to facilitate the purification using column affinity chromatography, but the MPT64 must be obtained as a pure protein. This study was purpose to ensure the efficient extracting method to purify protein MPT64 directly from the polyacrylamide gel. The crude extract of extracellular protein containing MPT64 protein was separated into single protein band and the targeted protein which is located in the size of 24 kDa was excised. Each of the six bands was collected in a sterile microtube to be eluted using electroelution and the optimized of the passive-elution method. Both the elution methods demonstrated the purity level of the MPT64 protein by detecting a solely band on the gel at the 24 kDa. Among the variety of passive-elution time, the highest MPT64 protein concentration was 0.549 mg/ml after elution for 72 h. However, the electroelution result provided higher MPT64 protein concentration, i.e., 0.683 mg/mL. However, based on the recognition of the purified MPT64 protein on commercial detection kit of MPT64 protein, it showed that the positive result was only showed by the passive-elution extracting protein. Therefore, for purifying the protein MPT64 from the sodium dodecyl sulfate-polyacrylamide gel electrophoresis gels, the efficient method was passive elution.
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Affiliation(s)
- Sri Agung Fitri Kusuma
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Bandung, Indonesia
- Department of Biology Pharmacy, Faculty of Pharmacy, Padjadjaran University, Bandung, Indonesia
| | - Ida Parwati
- Department of Clinical Pathology, Faculty of Medical, Padjadjaran University, Bandung, Indonesia
- Dr Hasan Sadikin General Hospital, Bandung, Indonesia
| | - Toto Subroto
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Bandung, Indonesia
- Research Center of Molecular Biotechnology and Bioinformatics, Padjadjaran University, Bandung, Indonesia
| | - Yaya Rukayadi
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia
| | - Muhammad Fadhlillah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Bandung, Indonesia
- PT. Genpro Multiguna Sejahtera, Sumedang, Indonesia
| | - Asep Rizaludin
- Research Center of Molecular Biotechnology and Bioinformatics, Padjadjaran University, Bandung, Indonesia
- National Nuclear Energy Agency of Indonesia, Bandung, Indonesia
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Ozturk Y, Ebrahimi A, Norouz Dizaji A, Kaygusuz O, Bafna JA, Winterhalter M, Cankaya G, Darcan C, Dogan Guzel F. Rapid fabrication of teflon apertures by controlled high voltage pulses for formation of free standing planar lipid bilayer membrane. Biomed Microdevices 2021; 23:12. [PMID: 33638734 DOI: 10.1007/s10544-021-00553-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2021] [Indexed: 11/29/2022]
Abstract
Free standing artificial lipid bilayers are widely used in the study of biological pores. In these types of studies, the free standing planar lipid bilayer is formed over a micron-sized aperture consisting of either polymer such as Polytetrafluoroethylene (PTFE, Teflon) or glass. Teflon is chemically inert, has a low dielectric constant, and has a high electrical resistance which combined allow for obtaining low noise recordings. This study investigates the reproducible generation of micropores in the range of 50-100 microns in diameter in a Teflon film using a high energy discharge set-up. The discharger set-up consists of a microprocessor, a transformer, a voltage regulator, and is controlled by a computer. We compared two approaches for pore creation: single and multi-pulse methods. The results showed that the multi-pulse method produced narrower aperture size distributions and is more convenient for lipid bilayer formation, and thus would have a higher success rate than the single-pulse method. The bilayer stability experiments showed that the lipid bilayer lasts for more than 33 h. Finally, as a proof-of-concept, we show that the single and multi-channel electrophysiology experiments were successfully performed with the apertures created by using the mentioned discharger. In conclusion, the described discharger provides reproducible Teflon-pores in a cheap and easy-to-operate manner.
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Affiliation(s)
- Yasin Ozturk
- Department of Metallurgical and Materials Engineering, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Aliakbar Ebrahimi
- Department of Biomedical Engineering, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Araz Norouz Dizaji
- Department of Biomedical Engineering, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Ozge Kaygusuz
- Biotechnology Application and Research Center, Bilecik Seyh Edebali University, Bilecik, Turkey
| | - Jayesh Arun Bafna
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Mathias Winterhalter
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Guven Cankaya
- Department of Metallurgical and Materials Engineering, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Cihan Darcan
- Biotechnology Application and Research Center, Bilecik Seyh Edebali University, Bilecik, Turkey.,Department of Molecular Biology and Genetics, Bilecik Seyh Edebali University, Bilecik, Turkey
| | - Fatma Dogan Guzel
- Department of Biomedical Engineering, Ankara Yıldırım Beyazıt University, Ankara, Turkey.
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Evert B, Vezina B, Rehm BHA. Catalytically Active Bioseparation Resin Utilizing a Covalent Intermediate for Tagless Protein Purification. ACS APPLIED BIO MATERIALS 2020; 3:8911-8922. [DOI: 10.1021/acsabm.0c01195] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ben Evert
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Brisbane 4111, Australia
| | - Ben Vezina
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Brisbane 4111, Australia
| | - Bernd H. A. Rehm
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Brisbane 4111, Australia
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Nrp-1 Mediated Plasmatic Ago2 Binding miR-21a-3p Internalization: A Novel Mechanism for miR-21a-3p Accumulation in Renal Tubular Epithelial Cells during Sepsis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2370253. [PMID: 32923478 PMCID: PMC7453242 DOI: 10.1155/2020/2370253] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/24/2020] [Accepted: 07/30/2020] [Indexed: 12/13/2022]
Abstract
The mechanism underlying sepsis-associated acute kidney injury (SAKI), which is an independent risk factor for sepsis-associated death, is unclear. A previous study indicates that during sepsis miR-21a-3p accumulates in renal tubular epithelial cells (TECs) as the mediator of inflammation and mediates TEC malfunction by manipulating its metabolism. However, the specific mechanism responsible for the accumulation of miR-21a-3p in TECs during sepsis is unrevealed. In this study, a cecal ligation and puncture- (CLP-) induced sepsis rat model and rat TEC line were used to elucidate the mechanism. Firstly, miR-21a-3p and Ago2 levels were found out to increase in both plasma and TECs during sepsis, and the increase of intracellular Ago2 and miR-21a-3p could be mitigated when Ago2 was either inactivated or downregulated in septic plasma. Moreover, membrane Nrp-1 expression of TECs was increased significantly during sepsis and Nrp-1 knockdown also mitigated the rise of both the intracellular Ago2 and miR-21a-3p levels in TECs incubated with septic plasma. Furthermore, it was revealed that Ago2 can be internalized by TECs mediated with Nrp-1 and this process had no effect on the intracellular content of miR-21a-3p. Both Ago2 and miR-21a-3p could bind to TECs derived Nrp-1 directly. Finally, it was determined that miR-21a-3p was internalized by TECs via Nrp-1 and Ago2 facilitated this process. Taken together, it can be concluded from our results that Ago2 binding miR-21a-3p from septic plasma can be actively internalized by TECs via Nrp-1 mediated cell internalization, and this mechanism is crucial for the rise of intracellular miR-21a-3p content of TECs during sepsis. These findings will improve our understanding of the mechanisms underlying SAKI and aid in developing novel therapeutic strategies.
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Purification of Developing Enamel Matrix Proteins Using Preparative SDS-PAGE. Methods Mol Biol 2019. [PMID: 30838583 DOI: 10.1007/978-1-4939-9012-2_25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
In this chapter we discuss the potential of preparative SDS-PAGE for use in purifying native developing enamel matrix proteins. We believe that the methodology has the potential to provide the relatively large-scale single-step purification of any enamel protein that can be resolved as a single band during analytical SDS-PAGE. Of course, a single band on analytical SDS-PAGE does not guarantee absolute purity as the band may be comprised of two or more proteins migrating at the same apparent molecular weight on the gel. Where absolute purity is required, the methodology can be used in conjunction with other techniques such as ion-exchange chromatography or reverse-phase chromatography. We do not see preparative SDS-PAGE replacing chromatographic methodologies but believe that it can provide another powerful tool to add to the battery of purification techniques already available to researchers in the field.
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