1
|
Dagci I, Acar M, Turhan F, Mavi A, Unver Y. Extracellular production of azurin by reusable magnetic Fe 3O 4 nanoparticle-immobilized Pseudomonas aeruginosa. J Biotechnol 2024; 394:48-56. [PMID: 39159754 DOI: 10.1016/j.jbiotec.2024.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 08/01/2024] [Accepted: 08/15/2024] [Indexed: 08/21/2024]
Abstract
Azurin, found in the periplasm of Pseudomonas aeruginosa, has garnered significant attention as a potential anticancer agent in recent years. High-level secretion of proteins into the culture medium, offers a significant advantage over periplasmic or cytoplasmic expression. In this study, for the first time, P. aeruginosa cells were immobilized with magnetic nanoparticles (MNPs) to ensure effective, simple and quick separation of the cells and secretion of periplasmic azurin protein to the culture medium. For this purpose, polyethyleneimine-coated iron oxide (Fe3O4@PEI) MNPs were synthesized and MNPs containing Fe up to 600 ppm were found to be non-toxic to the bacteria. The highest extracellular azurin level was observed in LB medium compared to peptone water. The cells immobilized with 400 ppm Fe-containing MNPs secreted the highest protein. Lastly, the immobilized cells were found suitable for azurin secretion until the sixth use. Thus, the magnetic nanoparticle immobilization method facilitated the release of azurin as well as the simple and rapid separation of cells. This approach, by facilitating protein purification and enabling the reuse of immobilized cells, offers a cost-effective means of protein production, reducing waste cell formation, and thus presents an advantageous method.
Collapse
Affiliation(s)
- Ibrahim Dagci
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Melek Acar
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Fatma Turhan
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Ahmet Mavi
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey; Department of Chemistry Education, Kazım Karabekir Faculty of Education, Atatürk University, Erzurum, Turkey
| | - Yagmur Unver
- Department of Molecular Biology and Genetics, Faculty of Science, Atatürk University, Erzurum, Turkey.
| |
Collapse
|
2
|
Unver Y, Ari B, Acar M, Yildiz Arslan S. A self-inducible heterologous protein expression system in Komagataella phaffii ( Pichia pastoris). 3 Biotech 2024; 14:193. [PMID: 39131177 PMCID: PMC11306816 DOI: 10.1007/s13205-024-04039-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 07/30/2024] [Indexed: 08/13/2024] Open
Abstract
Komagataella phaffii (previously described as Pichia pastoris) is a yeast that produces high-level heterologous proteins with a wide range of applications in medicine and industry. The methanol-induced alcohol oxidase I promoter (PAOX1) is frequently used for protein expression in this yeast. However, limitations on the use of methanol have been observed in large-scale production, including its flammability, toxicity, and need for special handling. Here, we propose to develop a system using recombinant cells constitutively expressing pectinmethyl esterase for expression of two reporter proteins, GFP and azurin, under the control of PAOX1 using pectin in production medium. So, this system is coherent with yeast culture medium containing pectin and heterologous gene inserted downstream of PAOX1 can be successfully expressed without the addition of methanol. Therefore, this novel Self-inducibLe heterologous protein EXpression (SILEX) system, which does not require the addition of methanol, can be used for the production of any protein. It can also be adapted for large-scale production. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-04039-x.
Collapse
Affiliation(s)
- Yagmur Unver
- Department of Molecular Biology and Genetics, Faculty of Science, Atatürk University, Erzurum, Turkey
| | - Betul Ari
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Melek Acar
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Seyda Yildiz Arslan
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| |
Collapse
|
3
|
Kaur H, Kalia A, Manchanda P, Singh A. Nano-delivery platforms for bacterial gene transformation: suitability and challenges. Int Microbiol 2024:10.1007/s10123-024-00543-5. [PMID: 38902555 DOI: 10.1007/s10123-024-00543-5] [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: 11/14/2023] [Revised: 05/19/2024] [Accepted: 06/02/2024] [Indexed: 06/22/2024]
Abstract
Nano-scale particles (NPs) have gained increased interest as non-viral vectors for nucleic acid delivery due to their ability to penetrate through unabraded cell membranes. The previous studies performed have evaluated the nanomaterials for their microbial transformation proficiency but have not compared the relative efficacy. The present study aims to identify the most proficient nano-delivery vehicle among the chemically synthesized/functionalized non-metal oxide, metal/metal oxide, and carbon-based (carbon nanotube (CNT), graphene oxide (GO)) nanomaterial(s) (NMs) for the transformation of two gram-negative bacteria, i.e., Escherichia coli and Agrobacterium tumefaciens. The microscopy and spectroscopy studies helped to identify the interaction, adhesion patterns, transformation efficiencies, better delivery, and expression of the target gfp gene by use of NMs. Loading of pgfp on all NMs imparted protection to DNAse I attack except ZnO NPs with maximum by chitosan, layered double hydroxide (LDH), and GO NM-plasmid DNA conjugates. The CNTs and GO significantly enhanced the extra- and intra-cellular protein content, respectively, in both bacteria. However, GO and CNT significantly decreased the cell viability in a time-dependent manner while AuNPs exhibited negligible cell toxicity. Therefore, this study identified the comparative efficiency of metal/metal oxide, non-metal oxide, and carbon nanomaterials with AuNPs as the most biosafe while LDH and chitosan NPs being the most proficient alternative tools for the genetic transformation of gram-negative bacteria by simple incubation method.
Collapse
Affiliation(s)
- Harkamal Kaur
- Department of Microbiology, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab, 141004, India.
| | - Pooja Manchanda
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
| | - Alla Singh
- ICAR-Indian Institute of Maize Research, PAU Campus, PAU, Ludhiana, Punjab, 141004, India
| |
Collapse
|
4
|
Kalakenger S, Yildiz Arslan S, Turhan F, Acar M, Solak K, Mavi A, Unver Y. Heterologous Expression of Codon-Optimized Azurin Transferred by Magnetofection Method in MCF-10A Cells. Mol Biotechnol 2024; 66:1434-1445. [PMID: 37378861 DOI: 10.1007/s12033-023-00798-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023]
Abstract
Transfection efficiency of the immortalized human breast epithelial cell line MCF-10A remains an issue that needs to be resolved. In this study, it was aimed to deliver a recombinant DNA (pCMV-Azu-GFP) to the MCF-10A cells by the magnetofection method using magnetic nanoparticles (MNPs) and a simple magnet to accelerate the DNA delivery. Surface positively modified silica-coated iron oxide MNPs (MSNP-NH2) were produced and characterized via TEM, FTIR, and DLS analyses. The recombinant DNA (rDNA) was obtained by the integration of codon-optimized azurin to produce a fusion protein. Then, rDNA cloned in Escherichia coli cells was validated by sequence analysis. The electrostatically conjugated rDNA on MSNP-NH2 with an enhancer polyethyleneimine (PEI) was studied by agarose gel electrophoresis and the optimum conditions were determined to apply to the cell. A dose-dependent statistical difference was observed on treated cells based on the MTS test. The expression of the fusion protein after magnetofection was determined using laser scanning confocal microscope imaging and western blot analysis. It was observed that the azurin gene could be transferred to MCF-10A cells by magnetofection. Thus, when the azurin gene is used as a breast cancer treatment agent, it can be expressed in healthy cells without toxic effects.
Collapse
Affiliation(s)
- Saadet Kalakenger
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Seyda Yildiz Arslan
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Fatma Turhan
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Melek Acar
- Department of Molecular Biology and Genetics, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Kubra Solak
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
| | - Ahmet Mavi
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Sciences, Atatürk University, Erzurum, Turkey
- Department of Mathematics and Science Education, Education Faculty of Kazım Karabekir, Atatürk University, Erzurum, Turkey
| | - Yagmur Unver
- Department of Molecular Biology and Genetics, Faculty of Science, Atatürk University, Erzurum, Turkey.
| |
Collapse
|
5
|
Liu L, Yang Z, Liu C, Wang M, Chen X. Preparation of PEI-modified nanoparticles by dopamine self-polymerization for efficient DNA delivery. Biotechnol Appl Biochem 2022; 70:824-834. [PMID: 36070708 DOI: 10.1002/bab.2402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/27/2022] [Indexed: 11/09/2022]
Abstract
Achieving efficient and safe gene delivery is great of significance to promote the development of gene therapy. In this work, a polydopamine (PDA) layer was coated on the surface of Fe3 O4 nanoparticles (NPs) by dopamine (DA) self-polymerization, and then magnetic Fe3 O4 NPs were prepared by the Michael addition between amino groups in polyethyleneimine (PEI) and PDA. The prepared Fe3 O4 NPs (named Fe3 O4 @PDA@PEI) were characterized by FTIR, atomic force microscopy (AFM) and scanning electron microscope (SEM). As an efficient and safe gene carrier, the potential of Fe3 O4 @PDA@PEI was evaluated by agarose gel electrophoresis, MTT assay, fluorescence microscopy, flow cytometry. The results shows that the Fe3 O4 @PDA@PEI NPs is stable hydrophilic nanoparticles with a particle size of 50-150 nm. It can efficiently condense DNA at low N/P ratios and protect it from nuclease degradation. In addition, the Fe3 O4 @PDA@PEI NPs has higher safety than PEI. Further, the Fe3 O4 @PDA@PEI/DNA polyplexes could be effectively absorbed by cells and successfully transfected, and exhibit higher cellular uptake and gene transfection efficiency than PEI/DNA polyplexes. The findings indicate that the Fe3 O4 @PDA@PEI NPs has the potential to be developed into a novel gene vector. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Liang Liu
- School of Life and Biology, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Zhaojun Yang
- School of Life and Biology, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Chaobing Liu
- School of Life and Biology, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Mengying Wang
- School of Life and Biology, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Xin Chen
- School of Life and Biology, Wuhan Polytechnic University, Wuhan, 430023, China
| |
Collapse
|