1
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Didevara E, Sadoogh Abbasian S, Sadeghi A, Abtahi H. Production of mutant streptavidin protein and investigation of its effect on the performance of streptavidin. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2023; 26:572-578. [PMID: 37051096 PMCID: PMC10083828 DOI: 10.22038/ijbms.2023.69083.15060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 02/14/2023] [Indexed: 04/14/2023]
Abstract
Objectives Streptavidin is a versatile protein in cell science. The tetramer structure of streptavidin plays a key role in this binding, but this form interferes with some assays. If monomer streptavidin is still capable of binding to biotin, it can overcome the limitations of the streptavidin application. So, we examined the elimination of tryptophan 120 and its effect on the function of streptavidin. Materials and Methods Mutant streptavidin gene was synthesized in a pBSK vector. Then it was ligated to the pET32α vector. This vector is expressed in Escherichia coli BL21 (DE3) pLysS host. After purification and refolding of the recombinant protein, its structure was analyzed on the SDS_PAGE gel. Recombinant streptavidin binding affinity to biotin was evaluated by spectrophotometric and HABA color compound. Results Mutant streptavidin gene was successfully expressed in E. coli BL21 (DE3) pLysS host and the purified protein was observed as a single band in the 36 kDa area. The best condition for dialysis was PBS buffer+arginine. The molar ratio of biotin/protein of mutant streptavidin was not only near but also more than standard protein. Mutant streptavidin remained in the monomeric state in the presence or absence of biotin. Conclusion Results of this study showed that 120 tryptophan is one of the most important factors in tetramer streptavidin formation and its deletion produces the monomer form that has a high binding affinity to biotin. This mutant form of streptavidin can therefore be used in studies requiring monovalent binding as well as in studies facing limitations due to the size of streptavidin tetramer.
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Affiliation(s)
- Elham Didevara
- Molecular and Medical Research Center, Arak University of Medical Sciences, Arak, Iran
| | | | - Abdolrahime Sadeghi
- Molecular and Medical Research Center, Arak University of Medical Sciences, Arak, Iran
| | - Hamid Abtahi
- Molecular and Medical Research Center, Arak University of Medical Sciences, Arak, Iran
- Corresponding author: Hamid Abtahi. Molecular and Medical Research Center, Arak University of Medical Sciences, Arak, Iran. Tel/Fax: +98-8634173645;
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2
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Young JW, Zhao Z, Wason IS, Duong van Hoa F. A Dual Detergent Strategy to Capture a Bacterial Outer Membrane Proteome in Peptidiscs for Characterization by Mass Spectrometry and Binding Assays. J Proteome Res 2022; 22:1537-1545. [PMID: 36516475 DOI: 10.1021/acs.jproteome.2c00560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The outer membrane of Gram-negative bacteria plays a critical role in protecting the cell against external stressors, including antibiotics, and therefore is a prime target for antimicrobial discovery. To facilitate the discovery efforts, a precise knowledge of the outer membrane proteome, and possible variations during pathogenesis, is important. Characterization of the bacterial outer membrane remain challenging, however, and low throughput, due to the high hydrophobicity and relatively low abundance of this cell compartment. Here we adapt our peptidisc-based method to selectively isolate the outer membrane proteome before analysis by mass spectrometry. Using a dual detergent membrane solubilization approach, followed by protein purification in peptidiscs, we capture over 70 outer membrane proteins, including 26 integral β-barrels and 26 lipoproteins. Many of these proteins are present at high peptide intensities, indicative of a high abundance in the library sample. We further show that the isolated outer membrane proteome can be employed in downstream ligand-binding assays. This peptidisc library made of outer membrane proteins may therefore be useful to systematically survey other bacterial outer membrane proteomes, but also as a nanoparticle format able to support the discovery of next-generation antimicrobials. Data are available via ProteomeXchange identifier PXD036749.
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Affiliation(s)
- John William Young
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Zhiyu Zhao
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Irvinder Singh Wason
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Franck Duong van Hoa
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
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3
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Lian H, Jiang J, Wang Y, Yu X, Zheng R, Long J, Zhou M, Zhou S, Wei C, Zhao A, Gao J. A novel multimeric sCD19-streptavidin fusion protein for functional detection and selective expansion of CD19-targeted CAR-T cells. Cancer Med 2022; 11:2978-2989. [PMID: 35621033 PMCID: PMC9359867 DOI: 10.1002/cam4.4657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 05/12/2021] [Accepted: 06/18/2021] [Indexed: 11/09/2022] Open
Abstract
Background CARs are engineered receptors comprising an immunoglobulin single‐chain variable fragment (scFv) that identifies and binds to the target antigen, a transmembrane domain, and an intracellular T‐cell signaling domain. CD19 is a B lineage‐specific transmembrane glycoprotein and is expressed in more than 95% of B‐cell malignancies. Streptavidin (SA) is a homo‐tetrameric protein derived from Streptomyces avidinii, which can bind four biotin molecules with an extremely high affinity at a Kd value of 10‐15 M. Aims The aim of the study is to generate a novel soluble multimeric fusion protein, sCD19‐streptavidin (sCD19‐SA) for functional detection and selective expansion of CD19‐targeted CAR‐T cells. Methods The fusion proteins CD19‐SA was expressed in CHO cells and purified by use of Ni‐nitrilotriacetic acid agarose beads. Results A novel fusion protein (sCD19‐SA) was generated, consisting of the extracellular domain of human CD19 and the core region of SA, and could be used to functionally detect CD19‐targeted CAR‐T cells. Furthermore, this protein was demonstrated to form multimers to activate CAR‐T cells to induce their selective expansion. Importantly, sCD19‐SA‐stimulated CD19‐targeted CAR‐T cells could improve antitumor effects in vivo. Conclusions Our study has highlighted the potential of utilizing antigen‐SA fusion proteins such as sCD19‐SA for CAR‐T therapy for the functional detection of CAR expression and selective expansion of CAR‐T cells.
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Affiliation(s)
- Hui Lian
- The First People's Hospital of Linping District, Hangzhou, Zhejiang, China.,Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jinhong Jiang
- Department of Hematology, Lishui People's Hospital, Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang, China
| | - Yao Wang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaoxiao Yu
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Rong Zheng
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jing Long
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Mengjie Zhou
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Shirong Zhou
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Cheng Wei
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ai Zhao
- Department of Geriatric, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jimin Gao
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Zhejiang Qixin Biotech, Wenzhou, China
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4
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Lurier EB, Nash VA, Abee HS, Wissing TB, Bouten CVC, Smits AIPM, Spiller KL. Imparting Immunomodulatory Activity to Scaffolds via Biotin-Avidin Interactions. ACS Biomater Sci Eng 2021; 7:5611-5621. [PMID: 34767332 DOI: 10.1021/acsbiomaterials.1c01190] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biotin-avidin interactions have been explored for decades as a technique to functionalize biomaterials, as well as for in vivo targeting, but whether changes in these interactions can be leveraged for immunomodulation remain unknown. The goal of this study was to investigate how biotin density and avidin variant can be used to deliver the immunomodulatory cytokine, interleukin 4 (IL4), from a porous gelatin scaffold, Gelfoam, to primary human macrophages in vitro. Here, we demonstrate that the degree of scaffold biotinylation controlled the binding of two different avidin variants, streptavidin and CaptAvidin. Biotinylated scaffolds were also loaded with streptavidin and biotinylated IL4 under flow, suggesting a potential use for targeting this biomaterial in vivo. While biotin-avidin interactions did not appear to influence the protein release in this system, increasing degrees of biotinylation did lead to increased M2-like polarization of primary human macrophages over time in vitro, highlighting the capability to leverage biotin-avidin interactions to modulate the macrophage phenotype. These results demonstrate a versatile and modular strategy to impart immunomodulatory activity to biomaterials.
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Affiliation(s)
- Emily B Lurier
- School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Victoria A Nash
- School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Hannah S Abee
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven 5612, Netherlands
| | - Tamar B Wissing
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven 5612, Netherlands.,Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven 5612, Netherlands
| | - Carlijn V C Bouten
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven 5612, Netherlands.,Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven 5612, Netherlands
| | - Anthal I P M Smits
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven 5612, Netherlands.,Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven 5612, Netherlands
| | - Kara L Spiller
- School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
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5
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Li H, Frankenfield AM, Houston R, Sekine S, Hao L. Thiol-Cleavable Biotin for Chemical and Enzymatic Biotinylation and Its Application to Mitochondrial TurboID Proteomics. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:2358-2365. [PMID: 33909971 PMCID: PMC8898397 DOI: 10.1021/jasms.1c00079] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Protein biotinylation via chemical or enzymatic reactions is often coupled with streptavidin-based enrichment and on-bead digestion in numerous biological applications. However, the popular on-bead digestion method faces major challenges of streptavidin contamination, overwhelming signals from endogenous biotinylated proteins, the lost information on biotinylation sites, and limited sequence coverage of enriched proteins. Here, we explored thiol-cleavable biotin as an alternative approach to elute biotinylated proteins from streptavidin-coated beads for both chemical biotinylation and biotin ligase-based proximity labeling. All possible amino acid sites for biotinylation were thoroughly evaluated in addition to the primary lysine residue. We found that biotinylation at lysine residues notably reduces the trypsin digestion efficiency, which can be mitigated by the thiol-cleavable biotinylation method. We then evaluated the applicability of thiol-cleavable biotin as a substrate for proximity labeling in living cells, where TurboID biotin ligase was engineered onto the mitochondrial inner membrane facing the mitochondrial matrix. As a proof-of-principle study, thiol-cleavable biotin-assisted TurboID proteomics achieved remarkable intraorganelle spatial resolution with significantly enriched proteins localized in the mitochondrial inner membrane and mitochondrial matrix.
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Affiliation(s)
- Haorong Li
- Department of Chemistry, The George Washington University, Science and Engineering Hall, 800 22nd Street, NW, Washington, DC 20052, United States
| | - Ashley M Frankenfield
- Department of Chemistry, The George Washington University, Science and Engineering Hall, 800 22nd Street, NW, Washington, DC 20052, United States
| | - Ryan Houston
- Aging Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh, Bridgeside Point I, 100 Technology Drive, Pittsburgh, Pennsylvania 15219, United States
| | - Shiori Sekine
- Aging Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh, Bridgeside Point I, 100 Technology Drive, Pittsburgh, Pennsylvania 15219, United States
| | - Ling Hao
- Department of Chemistry, The George Washington University, Science and Engineering Hall, 800 22nd Street, NW, Washington, DC 20052, United States
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6
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Engineering a disulfide-gated switch in streptavidin enables reversible binding without sacrificing binding affinity. Sci Rep 2020; 10:12483. [PMID: 32719366 PMCID: PMC7385176 DOI: 10.1038/s41598-020-69357-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 07/08/2020] [Indexed: 11/09/2022] Open
Abstract
Although high affinity binding between streptavidin and biotin is widely exploited, the accompanying low rate of dissociation prevents its use in many applications where rapid ligand release is also required. To combine extremely tight and reversible binding, we have introduced disulfide bonds into opposite sides of a flexible loop critical for biotin binding, creating streptavidin muteins (M88 and M112) with novel disulfide-switchable binding properties. Crystal structures reveal how each disulfide exerts opposing effects on structure and function. Whereas the disulfide in M112 disrupts the closed conformation to increase koff, the disulfide in M88 stabilizes the closed conformation, decreasing koff 260-fold relative to streptavidin. The simple and efficient reduction of this disulfide increases koff 19,000-fold, thus creating a reversible redox-dependent switch with 70-fold faster dissociation kinetics than streptavidin. The facile control of disulfide formation in M88 will enable the development of many new applications requiring high affinity and reversible binding.
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7
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Enriquez-Ochoa D, Robles-Ovalle P, Mayolo-Deloisa K, Brunck MEG. Immobilization of Growth Factors for Cell Therapy Manufacturing. Front Bioeng Biotechnol 2020; 8:620. [PMID: 32637403 PMCID: PMC7317031 DOI: 10.3389/fbioe.2020.00620] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/20/2020] [Indexed: 12/21/2022] Open
Abstract
Cell therapy products exhibit great therapeutic potential but come with a deterring price tag partly caused by their costly manufacturing processes. The development of strategies that lead to cost-effective cell production is key to expand the reach of cell therapies. Growth factors are critical culture media components required for the maintenance and differentiation of cells in culture and are widely employed in cell therapy manufacturing. However, they are expensive, and their common use in soluble form is often associated with decreased stability and bioactivity. Immobilization has emerged as a possible strategy to optimize growth factor use in cell culture. To date, several immobilization techniques have been reported for attaching growth factors onto a variety of biomaterials, but these have been focused on tissue engineering. This review briefly summarizes the current landscape of cell therapy manufacturing, before describing the types of chemistry that can be used to immobilize growth factors for cell culture. Emphasis is placed to identify strategies that could reduce growth factor usage and enhance bioactivity. Finally, we describe a case study for stem cell factor.
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Affiliation(s)
| | | | - Karla Mayolo-Deloisa
- Tecnologico de Monterrey, School of Engineering and Science, FEMSA Biotechnology Center, Monterrey, Mexico
| | - Marion E. G. Brunck
- Tecnologico de Monterrey, School of Engineering and Science, FEMSA Biotechnology Center, Monterrey, Mexico
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8
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Barshop WD, Kim HJ, Fan X, Sha J, Rayatpisheh S, Wohlschlegel JA. Chemical Derivatization of Affinity Matrices Provides Protection from Tryptic Proteolysis. J Proteome Res 2019; 18:3586-3596. [PMID: 31498634 DOI: 10.1021/acs.jproteome.9b00254] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The enrichment of biotinylated proteins using immobilized streptavidin has become a staple methodology for affinity purification-based proteomics. Many of these workflows rely upon tryptic digestion to elute streptavidin-captured moieties from the beads. The concurrent release of high amounts of streptavidin-derived peptides into the digested sample, however, can significantly hamper the effectiveness of downstream proteomic analyses by increasing the complexity and dynamic range of the mixture. Here, we describe a strategy for the chemical derivatization of streptavidin that renders it largely resistant to proteolysis by trypsin and thereby dramatically reduces the amount of streptavidin contamination in the sample. This rapid and robust approach improves the effectiveness of mass spectrometry-based characterization of streptavidin-purified samples making it broadly useful for a wide variety of applications. In addition, we show that this chemical protection strategy can also be applied to other affinity matrices including immobilized antibodies against HA epitopes.
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Affiliation(s)
- William D Barshop
- Department of Biological Chemistry, David Geffen School of Medicine , University of California-Los Angeles , Los Angeles , California 951737 , United States
| | - Hee Jong Kim
- Department of Biological Chemistry, David Geffen School of Medicine , University of California-Los Angeles , Los Angeles , California 951737 , United States
| | - Xiaorui Fan
- Department of Biological Chemistry, David Geffen School of Medicine , University of California-Los Angeles , Los Angeles , California 951737 , United States
| | - Jihui Sha
- Department of Biological Chemistry, David Geffen School of Medicine , University of California-Los Angeles , Los Angeles , California 951737 , United States
| | - Shima Rayatpisheh
- Department of Biological Chemistry, David Geffen School of Medicine , University of California-Los Angeles , Los Angeles , California 951737 , United States
| | - James A Wohlschlegel
- Department of Biological Chemistry, David Geffen School of Medicine , University of California-Los Angeles , Los Angeles , California 951737 , United States
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9
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Recent advances in the engineering and application of streptavidin-like molecules. Appl Microbiol Biotechnol 2019; 103:7355-7365. [DOI: 10.1007/s00253-019-10036-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 01/24/2023]
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10
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Bansal N, Zheng Z, Song LF, Pei J, Merz KM. The Role of the Active Site Flap in Streptavidin/Biotin Complex Formation. J Am Chem Soc 2018; 140:5434-5446. [PMID: 29607642 DOI: 10.1021/jacs.8b00743] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Obtaining a detailed description of how active site flap motion affects substrate or ligand binding will advance structure-based drug design (SBDD) efforts on systems including the kinases, HSP90, HIV protease, ureases, etc. Through this understanding, we will be able to design better inhibitors and better proteins that have desired functions. Herein we address this issue by generating the relevant configurational states of a protein flap on the molecular energy landscape using an approach we call MTFlex-b and then following this with a procedure to estimate the free energy associated with the motion of the flap region. To illustrate our overall workflow, we explored the free energy changes in the streptavidin/biotin system upon introducing conformational flexibility in loop3-4 in the biotin unbound ( apo) and bound ( holo) state. The free energy surfaces were created using the Movable Type free energy method, and for further validation, we compared them to potential of mean force (PMF) generated free energy surfaces using MD simulations employing the FF99SBILDN and FF14SB force fields. We also estimated the free energy thermodynamic cycle using an ensemble of closed-like and open-like end states for the ligand unbound and bound states and estimated the binding free energy to be approximately -16.2 kcal/mol (experimental -18.3 kcal/mol). The good agreement between MTFlex-b in combination with the MT method with experiment and MD simulations supports the effectiveness of our strategy in obtaining unique insights into the motions in proteins that can then be used in a range of biological and biomedical applications.
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Affiliation(s)
- Nupur Bansal
- Department of Chemistry and Department of Biochemistry and Molecular Biology , Michigan State University , 578 South Shaw Lane , East Lansing , Michigan 48824 , United States
| | - Zheng Zheng
- Department of Chemistry and Department of Biochemistry and Molecular Biology , Michigan State University , 578 South Shaw Lane , East Lansing , Michigan 48824 , United States
| | - Lin Frank Song
- Department of Chemistry and Department of Biochemistry and Molecular Biology , Michigan State University , 578 South Shaw Lane , East Lansing , Michigan 48824 , United States
| | - Jun Pei
- Department of Chemistry and Department of Biochemistry and Molecular Biology , Michigan State University , 578 South Shaw Lane , East Lansing , Michigan 48824 , United States
| | - Kenneth M Merz
- Department of Chemistry and Department of Biochemistry and Molecular Biology , Michigan State University , 578 South Shaw Lane , East Lansing , Michigan 48824 , United States.,Institute for Cyber Enabled Research , Michigan State University , 567 Wilson Road , East Lansing , Michigan 48824 , United States
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11
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Sun P, Zhang N, Tang Y, Yang Y, Zhou J, Zhao Y. Site-specific anchoring aptamer C2NP on DNA origami nanostructures for cancer treatment. RSC Adv 2018; 8:26300-26308. [PMID: 35541930 PMCID: PMC9082932 DOI: 10.1039/c8ra04589e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 07/12/2018] [Indexed: 11/21/2022] Open
Abstract
Aptamer anchored DNA nanostructures not only can enhance the anticancer activity of DOX, but also exhibit synergic biological effect with chemotherapy on cancer therapy.
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Affiliation(s)
- Pengchao Sun
- School of Pharmaceutical Science
- Zhengzhou University
- Zhengzhou
- P. R China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province
| | - Nan Zhang
- School of Pharmaceutical Science
- Zhengzhou University
- Zhengzhou
- P. R China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province
| | - Yafang Tang
- School of Pharmaceutical Science
- Zhengzhou University
- Zhengzhou
- P. R China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province
| | - Yanan Yang
- School of Pharmaceutical Science
- Zhengzhou University
- Zhengzhou
- P. R China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province
| | - Jie Zhou
- School of Pharmaceutical Science
- Zhengzhou University
- Zhengzhou
- P. R China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province
| | - Yongxing Zhao
- School of Pharmaceutical Science
- Zhengzhou University
- Zhengzhou
- P. R China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province
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12
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Dai X, Zhuang J, Wu Y, Wang P, Zhao G, Liu Y, Jiang X, Gao L, Xia T. Identification of a Flavonoid Glucosyltransferase Involved in 7-OH Site Glycosylation in Tea plants (Camellia sinensis). Sci Rep 2017; 7:5926. [PMID: 28725058 PMCID: PMC5517534 DOI: 10.1038/s41598-017-06453-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 06/13/2017] [Indexed: 11/22/2022] Open
Abstract
Flavonol glycosides, which are often converted from aglycones in a process catalyzed by UDP-glycosyltransferases (UGTs), play an important role for the health of plants and animals. In the present study, a gene encoding a flavonoid 7-O-glycosyltransferase (CsUGT75L12) was identified in tea plants. Recombinant CsUGT75L12 protein displayed glycosyltransferase activity on the 7-OH position of multiple phenolic compounds. In relative comparison to wild-type seeds, the levels of flavonol-glucosides increased in Arabidopsis seeds overexpressing CsUGT75L12. In order to determine the key amino acid residues responsible for the catalytic activity of the protein, a series of site-directed mutagenesis and enzymatic assays were performed based on the 3D structural modeling and docking analyses. These results suggested that residue Q54 is a double binding site that functions as both a sugar receptor and donor. Residues H56 and T151, corresponding to the basic active residues H20 and D119 of VvGT1, were not irreplaceable for CsUGT75L12. In addition, residues Y182, S223, P238, T239, and F240 were demonstrated to be responsible for a ‘reversed’ sugar receptor binding model. The results of single and triple substitutions confirmed that the function of residues P238, T239, and F240 may substitute or compensate with each other for the flavonoid 7-O-glycosyltransferase activity.
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Affiliation(s)
- Xinlong Dai
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China.,School of Life Science, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Juhua Zhuang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Yingling Wu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Peiqiang Wang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Guifu Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Yajun Liu
- School of Life Science, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Xiaolan Jiang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Liping Gao
- School of Life Science, Anhui Agricultural University, Hefei, Anhui, 230036, China.
| | - Tao Xia
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China.
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13
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Wu SC, Wang C, Hansen D, Wong SL. A simple approach for preparation of affinity matrices: Simultaneous purification and reversible immobilization of a streptavidin mutein to agarose matrix. Sci Rep 2017; 7:42849. [PMID: 28220817 PMCID: PMC5318860 DOI: 10.1038/srep42849] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 01/18/2017] [Indexed: 11/09/2022] Open
Abstract
SAVSBPM18 is an engineered streptavidin for affinity purification of both biotinylated biomolecules and recombinant proteins tagged with streptavidin binding peptide (SBP) tags. To develop a user-friendly approach for the preparation of the SAVSBPM18-based affinity matrices, a designer fusion protein containing SAVSBPM18 and a galactose binding domain was engineered. The galactose binding domain derived from the earthworm lectin EW29 was genetically modified to eliminate a proteolytic cleavage site located at the beginning of the domain. This domain was fused to the C-terminal end of SAVSBPM18. It allows the SAVSBPM18 fusions to bind reversibly to agarose and can serve as an affinity handle for purification of the fusion. Fluorescently labeled SAVSBPM18 fusions were found to be stably immobilized on Sepharose 6B-CL. The enhanced immobilization capability of the fusion to the agarose beads results from the avidity effect mediated by the tetrameric nature of SAVSBPM18. This approach allows the consolidation of purification and immobilization of SAVSBPM18 fusions to Sepharose 6B-CL in one step for affinity matrix preparation. The resulting affinity matrix has been successfully applied to purify both SBP tagged β-lactamase and biotinylated proteins. No significant reduction in binding capacity of the column was observed for at least six months.
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Affiliation(s)
- Sau-Ching Wu
- Department of Biological Sciences, University of Calgary, 2500 University Dr., N.W. Calgary, Alberta, T2N 1N4, Canada
| | - Chris Wang
- Department of Biological Sciences, University of Calgary, 2500 University Dr., N.W. Calgary, Alberta, T2N 1N4, Canada
| | - Dave Hansen
- Department of Biological Sciences, University of Calgary, 2500 University Dr., N.W. Calgary, Alberta, T2N 1N4, Canada
| | - Sui-Lam Wong
- Department of Biological Sciences, University of Calgary, 2500 University Dr., N.W. Calgary, Alberta, T2N 1N4, Canada
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Song J, Li Y, Ji C, Zhang JZH. Functional loop dynamics of the streptavidin-biotin complex. Sci Rep 2015; 5:7906. [PMID: 25601277 PMCID: PMC4298722 DOI: 10.1038/srep07906] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 12/19/2014] [Indexed: 11/09/2022] Open
Abstract
Accelerated molecular dynamics (aMD) simulation is employed to study the functional dynamics of the flexible loop(3-4) in the strong-binding streptavidin-biotin complex system. Conventional molecular (cMD) simulation is also performed for comparison. The present study reveals the following important properties of the loop dynamics: (1) The transition of loop(3-4) from open to closed state is observed in 200 ns aMD simulation. (2) In the absence of biotin binding, the open-state streptavidin is more stable, which is consistent with experimental evidences. The free energy (ΔG) difference is about 5 kcal/mol between two states. But with biotin binding, the closed state is more stable due to electrostatic and hydrophobic interactions between the loop(3-4) and biotin. (3) The closure of loop(3-4) is concerted to the stable binding of biotin to streptavidin. When the loop(3-4) is in its open-state, biotin moves out of the binding pocket, indicating that the interactions between the loop(3-4) and biotin are essential in trapping biotin in the binding pocket. (4) In the tetrameric streptavidin system, the conformational change of the loop(3-4) in each monomer is independent of each other. That is, there is no cooperative binding for biotin bound to the four subunits of the tetramer.
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Affiliation(s)
- Jianing Song
- State Key Laboratory of Precision Spectroscopy, Department of Physics, Institute of Theoretical and Computational Science, East China Normal University, Shanghai 200062, China
| | - Yongle Li
- Department of Chemistry, New York University
| | - Changge Ji
- 1] State Key Laboratory of Precision Spectroscopy, Department of Physics, Institute of Theoretical and Computational Science, East China Normal University, Shanghai 200062, China [2] Institutes for Advanced Interdisciplinary Research, East China Normal University, Shanghai 200062, China [3] NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai, China 200062
| | - John Z H Zhang
- 1] State Key Laboratory of Precision Spectroscopy, Department of Physics, Institute of Theoretical and Computational Science, East China Normal University, Shanghai 200062, China [2] NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai, China 200062
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15
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Tse J, Wang Y, Zengeya T, Rozners E, Tan-Wilson A. Peptide nucleic acid probe for protein affinity purification based on biotin-streptavidin interaction and peptide nucleic acid strand hybridization. Anal Biochem 2014; 470:34-40. [PMID: 25447466 DOI: 10.1016/j.ab.2014.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 10/06/2014] [Accepted: 10/09/2014] [Indexed: 01/25/2023]
Abstract
We describe a new method for protein affinity purification that capitalizes on the high affinity of streptavidin for biotin but does not require dissociation of the biotin-streptavidin complex for protein retrieval. Conventional reagents place both the selectively reacting group (the "warhead") and the biotin on the same molecule. We place the warhead and the biotin on separate molecules, each linked to a short strand of peptide nucleic acid (PNA), synthetic polymers that use the same bases as DNA but attached to a backbone that is resistant to attack by proteases and nucleases. As in DNA, PNA strands with complementary base sequences hybridize. In conditions that favor PNA duplex formation, the warhead strand (carrying the tagged protein) and the biotin strand form a complex that is held onto immobilized streptavidin. As in DNA, the PNA duplex dissociates at moderately elevated temperature; therefore, retrieval of the tagged protein is accomplished by a brief exposure to heat. Using iodoacetate as the warhead, 8-base PNA strands, biotin, and streptavidin-coated magnetic beads, we demonstrate retrieval of the cysteine protease papain. We were also able to use our iodoacetyl-PNA:PNA-biotin probe for retrieval and identification of a thiol reductase and a glutathione transferase from soybean seedling cotyledons.
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Affiliation(s)
- Jenny Tse
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Yuanyuan Wang
- Department of Biological Sciences, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Thomas Zengeya
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Eriks Rozners
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Anna Tan-Wilson
- Department of Biological Sciences, State University of New York at Binghamton, Binghamton, NY 13902, USA.
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16
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Streptavidin–biotin technology: improvements and innovations in chemical and biological applications. Appl Microbiol Biotechnol 2013; 97:9343-53. [DOI: 10.1007/s00253-013-5232-z] [Citation(s) in RCA: 238] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 08/29/2013] [Accepted: 09/02/2013] [Indexed: 12/25/2022]
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17
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Barrette-Ng IH, Wu SC, Tjia WM, Wong SL, Ng KKS. The structure of the SBP-Tag-streptavidin complex reveals a novel helical scaffold bridging binding pockets on separate subunits. ACTA CRYSTALLOGRAPHICA. SECTION D, BIOLOGICAL CRYSTALLOGRAPHY 2013; 69:879-87. [PMID: 23633599 PMCID: PMC3640474 DOI: 10.1107/s0907444913002576] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 01/25/2013] [Indexed: 11/10/2022]
Abstract
The 38-residue SBP-Tag binds to streptavidin more tightly (K(d) -/= 2.5-4.9 nM) than most if not all other known peptide sequences. Crystallographic analysis at 1.75 Å resolution shows that the SBP-Tag binds to streptavidin in an unprecedented manner by simultaneously interacting with biotin-binding pockets from two separate subunits. An N-terminal HVV peptide sequence (residues 12-14) and a C-terminal HPQ sequence (residues 31-33) form the bulk of the direct interactions between the SBP-Tag and the two biotin-binding pockets. Surprisingly, most of the peptide spanning these two sites (residues 17-28) adopts a regular α-helical structure that projects three leucine side chains into a groove formed at the interface between two streptavidin protomers. The crystal structure shows that residues 1-10 and 35-38 of the original SBP-Tag identified through in vitro selection and deletion analysis do not appear to contact streptavidin and thus may not be important for binding. A 25-residue peptide comprising residues 11-34 (SBP-Tag2) was synthesized and shown using surface plasmon resonance to bind streptavidin with very similar affinity and kinetics when compared with the SBP-Tag. The SBP-Tag2 was also added to the C-terminus of β-lactamase and was shown to be just as effective as the full-length SBP-Tag in affinity purification. These results validate the molecular structure of the SBP-Tag-streptavidin complex and establish a minimal bivalent streptavidin-binding tag from which further rational design and optimization can proceed.
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Affiliation(s)
- Isabelle H. Barrette-Ng
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Sau-Ching Wu
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Wai-Mui Tjia
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Sui-Lam Wong
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Kenneth K. S. Ng
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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Takakura Y, Sofuku K, Tsunashima M. Tamavidin 2-REV: An engineered tamavidin with reversible biotin-binding capability. J Biotechnol 2013; 164:19-25. [DOI: 10.1016/j.jbiotec.2013.01.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 12/28/2012] [Accepted: 01/09/2013] [Indexed: 11/29/2022]
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Stanisavljevic M, Janu L, Smerkova K, Krizkova S, Pizurova N, Ryvolova M, Adam V, Hubalek J, Kizek R. Study of Streptavidin-Modified Quantum Dots by Capillary Electrophoresis. Chromatographia 2012. [DOI: 10.1007/s10337-012-2372-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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